L. S. Starrett Co. - Assigned Patents

Manufacturers Index - L. S. Starrett Co.

L. S. Starrett Co.
Athol, MA, U.S.A.
Company Website: https://www.starrett.com
Manufacturer Class: Metal Working Machinery

Patents

This page contains information on patents issued to this manufacturer.

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Patent Number	Date	Title	Name	City	Description
163,113	May. 11, 1875	Improvement in car-windows	La Roy S. Starrett	Athol Depot, MA	Yes, Mr. L. S. Starrett also invented a window for a railway car.
215,024	May. 06, 1879	Try Square	Laroy S. Starrett	Athol, Worcester County, MA	This Try Square was #11 in Starrett's #21 catalog. An EARLY PATENT COMBINATION SQUARE by L.S. Starrett, Athol, Massachusetts, patented May 6, 1879. These squares were one of the very first products produced by the your Laroy S. Starrett. They are disinguished by the series of layout holes bored in the blade. Description courtesy and copyrighted by Martin J. Donnelly Antique Tools.
229,283	Jun. 29, 1880	Try Square	Laroy S. Starrett	Athol, Worcester County, MA
RE9,419	Oct. 19, 1880	Try Square	Laroy S. Starrett	Athol, Worcester County, MA	This Try Square was #11 in Starrett's #21 catalog. Please see link for current catalog listing. The H in the catalog number indicates that the Head is hardened.
255,123	Mar. 21, 1882	Surface Gage	Laroy S. Starrett	Athol, Worcester County, MA	This Surface Gage was #52 in the Starrett #21 catalog.
282,583	Aug. 07, 1883	Beveling Instrument	Laroy Sunderland Starrett	Athol, Worcester County, MA
310,292	Jan. 06, 1885	Calipers	Frank G. Lilja	Springfield, MA
318,051	May. 19, 1885	Screw Thread Gage	Laroy Sunderland Starrett	Athol, Worcester County, MA	Thread gage is placed on the edge of the gage instead of on the end of the gage as was the previous norm. This arrangement also allows interior threads to be easily measured. Sold as their model 4 and model 40.
319,215	Jun. 02, 1885	Spring Calipers	Charles P. Fay	Springfield, MA	Object is to provide an improved spring caliper with a "knockdown" feature that allows the spring to be removed and used interchangeably with other caliper legs.
375,658	Dec. 27, 1887	Leg Joint for Caliper, Dividers, etc.	Laroy S. Starrett	Athol, MA
375,703	Dec. 27, 1887	Leg Joint for Caliper, Dividers, etc.	Charles P. Fay	Athol, MA
402,947	May. 07, 1889	Art of Welding	William Wilson Lee	Northampton, MA	Screwdriver marked Pat'd May 7, Oct 8, 1889. The Vulcan Hollow Handle Screw Driver. No 115. Shown in only in Starrett catalog 13 c1895. Other patent is Lee's 412,277
404,057	May. 28, 1889	Micrometer Caliper	Morris F. Smith	New Haven, CT	This 6 inch Micrometer was #128 in the Starrett catalog. This is a 0-1" micrometer mounted on a bar with a pin and a set of precision bushings. Of the 6 possible positions in the example shown (image #2), only one was .001" off. The rest were less than that. My invention relates to that class of micrometer-calipers, which measures distances greater than one inch by means of moving a slide, which carries one of the caliper-points. The objects of my invention are accurate and expeditious adjustment of the slide and improved means for taking up the wear of the micrometer-screw. To enable others to make and use my improved calipers, I will give a description of the same in detail, reference being had to the drawings hereto annexed. The beam A, Fig. 1, has the two parts a and &. The part a is rectangular and of equal size throughout its length and the part 5 integral with the part a is bent at a right angle to it and terminates in the cylindrical enlargement c, which is tapped to receive the screw B. The part a is perforated in two lines parallel and near to the sides of the beam, into which hardened-steel bushings d are forced. These bushed holes are arranged to operate in conjunction with the bushed holes in the slide, so that when bushings having like numbers are brought in line the micrometer-screw being in the position shown in Fig. 1, the distance between caliper points C and D will be as many inches or units of measure as the number on the coincident bushings indicates. Thus in Fig. 1 bushings 3 are in line, and the distance between points C and D is three units. Fractional measurements are obtained in the same manner as in the ordinary micrometers. The screw B is reduced in size where it protrudes from the beam, and is chamfered at the end C, and forms one of the caliper-points. The slide E is a rectangular box fitted to the beam, except on the lower side, where room enough is left for the shoe or gib g to fill. On its lower side a circular boss is raised, which is tapped to receive the thumb-screw which passes through the lower side of the slide and comes against the shoe g. The shoe g is turned up at each end at right angles to hold it in place when the screw is released. On the upper side of the slide extends upward, the arm e, terminating in the cylindrical enlargement , which is tapped to receive the part F. When the slide is in place on the beam A, the axes of the threaded parts c and are in line. The wider sides, h, of the slide are perforated in two parallel lines, which are in the same planes as the lines of the holes in the beam, and the holes are equal in number. Into these holes, bushings i are forced, and are ground out, as is hereinafter explained. The pin G-, with the knurled head, is fitted to these bushings and holds the slide from endwise movement when the tool is in use.
411,537	Sep. 24, 1889	Calipers or Dividers	Laroy S. Starrett	Athol, MA	Auxillary nut with the ajusting spring acting directly on the nut instead of the brace and is used to lock the dividers in position after the fine adjustments are made. Second feature is a stud on the other arm that the brace goes through with a locking thumb nut. Applied on the Starrett model 235.
412,277	Oct. 08, 1889	Hollow Handle For Implements	William Wilson Lee	Northampton, MA	Screwdriver marked Pat'd May 7, Oct 8, 1889. The Vulcan Hollow Handle Screw Driver. No 115. Shown in only Starrett catalog 13 c1895. Presuming other patent is Lee's 402,947
448,089	Mar. 10, 1891	Micrometer Gage	Laroy S. Starrett	Athol, MA	The object of this invention is to furnish a speeded micrometer in which the movement of the spindle toward and from the anvil by rotation is much more rapid than in those heretofore known, the instrument being at the same time rendered more sensitive than hitherto. These objects I attain by providing the outer end of the spindle with a milled projecting thumb-piece materially less in diameter than the milled hub at the end of the external sleeve, to which the finger and thumb are usually applied in rotating the spindle. This projecting thumb-piece may be either an integral part of the hub which closes the outer end of the sleeve or a part of the spindle itself prolonged through said hub, or a separate pin or plug extending into it. Another feature of this invention introduces into the cavity of the threaded barrel a coiled spring surrounding the spindle and serving to keep its screw-threads pressed back into such close engagement with the female screw as to avoid all backlash and insure the utmost accuracy. The screw-thread is preferably ratchet-shaped or with the incline mainly on one side, to present on the other side a square shoulder to the work. The spring is compressed between the bottom of the barrel and a defined shoulder or collar at the end of the threaded part of the spindle. Used on Starrett #113 Micrometers.
474,699	May. 10, 1892	Bevel Protractor	Laroy S. Starrett	Athol, MA	This Bevel Protactor was catalog # 360 in Starrett calalog #21.
539,759	May. 21, 1895	Calipers and Dividers	Laroy S. Starrett	Athol, MA	Locking device for the legs and fine adjustment. This patent is referenced in Starrett's later patent, 672424.
		Calipers and Dividers	Charles P. Fay	Athol, MA
D24,503	Jul. 23, 1895	Try Square	Laroy S. Starrett	Athol, MA	Body of the tool with a smooth raised portion with a sunken, textured interior and an opening in the lower body and a semicylinder enclosing the adjusting mechanism. This patent was submitted simultaneously with a utility patent application, Serial Number 549,924. Unknown if a patent was issued.
556,703	Mar. 17, 1896	Surface Gage	Laroy S. Starrett	Athol, MA
		Surface Gage	Charles P. Fay	Athol, MA
557,446	Mar. 31, 1896	Speed Measure	Laroy S. Starrett	Athol, MA
568,242	Sep. 22, 1896	Cutting Pliers	Charles P. Fay	Athol, MA	This patent is the basis for the Starrett #'s 1, 233X & 235 Adjustable Jaw Cut Nippers. The 235 series are the same as the # 1 series except that the jaws are adjusted for a 1/4" opening at the factory. The #1 series was "announced to the trade" in November, 1893. Some early models of this pliers had this patent date and 14 Nov 1899 (Patent #637,177) stamped on the pliers.
576,626	Feb. 09, 1897	Hack Saw	Laroy S. Starrett	Athol, MA	Starrett Hacksaws #'s 145, 147, & 489 used features of this patent.
580,432	Apr. 13, 1897	Speed Indicator	Laroy S. Starrett	Athol, MA	A machinist's speed indicator, which is pressed against a rotating shaft to count rotations in a specific time period to calculate RPM. This tool was produced in large numbers by the Starrett company, but a later improvement to this patent (786,073 - 3/28/1905) was even more popular.
582,154	May. 04, 1897	Micrometer Gage	Edward Clifton Clapp	Athol, MA	Used on Starrett #113 Micrometers.
592,176	Oct. 19, 1897	Reversible Pocket Tool	Laroy S. Starrett	Athol, MA	The Starrett catalog number for screwdriver was 150. Last offered in Catalog 23, 1924. Price was 60 cents. An 1896 SCIENTIFIC AMERICAN ad notes "wrench" as one function of interest to cyclists.
601,800	Apr. 05, 1898	Speed Indicator	Laroy S. Starrett	Athol, MA	This Patent is incorporated into the Starrett #104 Speed Indicator.
613,946	Nov. 08, 1898	Combined Level, Square, and Plumb	Laroy S. Starrett	Athol, MA
637,177	Nov. 14, 1899	Cutting Nippers	Laroy S. Starrett	Athol, MA	The Adjustable Jaw Cut Nippers are listed as #'s 1, 233x, and 235 in the Starrett Catalog. An early "new product announcement" appeared in the November 16, 1893 IRON AGE. Some early models of this pliers had this patent date and 22 Sep. 1896 (Patent #568,242) stamped on the pliers.
642,170	Jan. 30, 1900	Split Nut	Laroy S. Starrett	Athol, MA	L. S. Starrett C0. currently offers Calipers in both the Fay and Yankee patterns with Split Nuts.
647,910	Apr. 17, 1900	Micrometer Gage	Laroy S. Starrett	Athol, MA
672,424	Apr. 16, 1901	Calipers and Dividers	Laroy S. Starrett	Athol, MA	Caliper and dividers with a fine adjustment screw. General construction is covered by Starrett's patent 539759
692,215	Jan. 28, 1902	Tool Holding Device	Laroy S. Starrett	Athol, MA	Clamping device that is grooved to receive a trammel.
700,156	May. 13, 1902	Draftsman's Scale	Robert J. Simpson	Athol, MA	A. H. Spencer - patent attorney at an angle to the horizon and permit it to be tipped from side to side and to bring either edge of either side to rest upon the paper. These studs are located at the ends of the scale, preferably just beyond the graduated portion of the instrument, and the ends of said studs are rounded or tapered, so as to tilt readily without indentation of the paper. The object of this invention is to provide for the use of mechanical draftsmen a tilting graduated straight-edge or scale so constructed that either edge of each face may rest closely down to the surface of the paper, bringing the lines indicating longitudinal measurements into immediate proximity to the surface of the paper and holding the scale at a desired inclination with one edge elevated. The characteristic peculiarity of my improved scale consists in providing it with studs located in the line of its transverse center and projecting from each side of the scale body, so as to hold such body
706,696	Aug. 12, 1902	Micrometer Gage	Robert J. Simpson	Athol, MA	A. H. Spencer - patent attorney
713,021	Nov. 04, 1902	Prick Punch and Spacing Tool	Laroy S. Starrett	Athol, MA	This patent was produced as the #118 Spacing Center Punch.
715,703	Dec. 09, 1902	Adjustable Square	Laroy S. Starrett	Athol, MA
716,303	Dec. 16, 1902	Screw Wrench	Laroy S. Starrett	Athol, MA
717,296	Dec. 30, 1902	Micrometer Calipers	Frank Spaulding	Providence, RI	Joseph A. Miller & Co. - patent attorneys This patent date and spindle locking mechanism was seen on a Starrett #2 micrometer.
726,003	Apr. 21, 1903	Inside Micrometer	Laroy S. Starrett	Athol, MA	This micrometer was listed as catalog # 124 on page 152 of the #21 Starrett Catalog.
729,004	May. 26, 1903	Screw-Driver	Laroy S. Starrett	Athol, MA	Sold by the L.S.Starrett Co. as the #550 screwdriver with replaceable/ interchangeable tips.Held in place by friction. With the addition of a screw holder, Patent #730804 June 9, 1903 also by Laroy S. Starrett, it becomes the #551.Both the #550 and #551 are sold in the #17 Starrett catalog 1905 , but by 1925 only the #551 is offered. Sample has both Patent dates on the screw holder and the screw holder is marked #551. The screw driver has only the 5/26/1903 patent on it and the #550.
730,804	Jun. 09, 1903	Screw-driver	Laroy S. Starrett	Athol, MA	Sold by the L.S.Starrett Co. as the #551, A screw holding screwdriver with replaceable/interchangeable tips. Patent #729004 May 26, 1903 also by Laroy S. Starrett, was sold as the #550. Both the #550 and #551 are sold in the #17 Starrett catalog 1905 , but by 1925 only the #551 is offered.Sample has both Patent dates on the screw holder and the screw holder is marked #551. The screw driver has only the 5/26/1903 patent on it and the #550.
739,738	Sep. 22, 1903	Case for Tape-measures	Laroy S. Starrett	Athol, MA	This case design was used in #'s 502, 504, 510, 511, 512, 520, 521 & 530 tapes as illustrated in the Starrett # 21 catalog.
745,973	Dec. 01, 1903	Hammer	Laroy S. Starrett	Athol, MA
762,258	Jun. 07, 1904	Nailset and Holder	Laroy S. Starrett	Athol, MA	This nailset was listed as catalog # 119 on page 282 of Starrett's # 21 catalog.
773,983	Nov. 01, 1904	Indicating Surface Gage	William Harry Reisner	Hagerstown, Washington County, MD
778,808	Dec. 27, 1904	Combined Square and Bevel Protractor	Laroy S. Starrett	Athol, MA
786,073	Mar. 28, 1905	Speed Indicator	Stafford P. Walsh	San Francisco, CA	This patent is an improvement to the earlier Starrett patent (580,432 - 4/13/1897), in which a spring was added to the tip to allow the measurement to be easily started or stopped without losing contact with the rotating part.
789,520	May. 09, 1905	Automatic prick-punch	John L. Baltzer	Athol, MA
		Automatic prick-punch	John A. Adell	Athol, MA
793,850	Jul. 04, 1905	Split Nut	Robert J. Simpson	Athol, MA	This design covers a split nut used for the adjustment rod on a pair of calipers. When the caliper spring is pressing against the nut it holds securely, but when the pressure is released the nut can slide freely on the rod. This was used for many years on Starrett calipers and dividers, and some early versions have this patent date marked in a semi-circle on the nut.
		Split Nut	Laroy S. Starrett	Athol, MA
806,594	Dec. 05, 1905	Spindle Lock for Micrometer Gage	Laroy S. Starrett	Athol, MA	This locking spindle feature was used in many of L. S. Starrett's micrometers. Please see current catalog link.
809,272	Jan. 02, 1906	Quick Adjusting Micrometer	Laroy S. Starrett	Athol, MA	This Micrometer was offered as # 204 in the Starrett calalog.
		Quick Adjusting Micrometer	John A. Adell	Athol, MA
813,997	Feb. 27, 1906	Base Attachment for Center Gages	John L. Baltzer	Athol, MA	Round stock with a recess in the base and groove to recieve the center gage.
		Base Attachment for Center Gages	Laroy S. Starrett	Athol, MA
815,758	Mar. 20, 1906	Screw Holding Screwdriver	Laroy S. Starrett	Athol, MA
833,699	Oct. 16, 1906	Plumb Bob	Laroy S. Starrett	Athol, MA	Slender, mercury filled bob with a notch on the body to allow the cord to be wrapped around the body and be attached to the center. Produced by Starrett as their No 87 Plumb Bob.
843,655	Feb. 12, 1907	Automatic Prick-Punch	Laroy S. Starrett	Athol, Worcester County, MA
		Automatic Prick-Punch	John A. Adell	Athol, Worcester County, MA
862,672	Aug. 06, 1907	Caliper Square	Laroy S. Starrett	Athol, MA
873,625	Dec. 10, 1907	Magazine Screwdriver	Laroy S. Starrett	Athol, MA	A known example is marked "L.S. STARRETT Co. / ATHOL, MASS. U.S.A. / PAT. DEC. 10, 07 / No. 557 "
873,626	Dec. 10, 1907	Spindle-lock for Micrometer Gage	Laroy S. Starrett	Athol, MA
		Spindle-lock for Micrometer Gage	John A. Adell	Athol, MA
905,110	Nov. 24, 1908	Inside Caliper Gage	Laroy S. Starrett	Athol, MA
		Inside Caliper Gage	John A. Adell	Athol, MA
928,889	Jul. 20, 1909	Spindle-lock for Micrometer Gage	Laroy S. Starrett	Athol, MA
966,962	Aug. 09, 1910	Floor Scraper	Laroy S. Starrett	Athol, MA	Overall configuration with a sheet metal frame, handle utiliting a ball and socket arrangement, and the second handle clamping the plates together to hold the blade. Produced by as their No. 181
968,884	Aug. 30, 1910	Indicating Surface Gage	William H. Reisner	Hagerstown, Washington County, MD	Pervice, Goldsborough & Neil - patent attorneys
		Indicating Surface Gage	Victor E. Middlekauff	Hagerstown, Washington County, MD
970,568	Sep. 20, 1910	Screw Clamp	Laroy S. Starrett	Athol, MA
980,361	Jan. 03, 1911	Expansion Pliers	Laroy S. Starrett	Athol, MA	This pliers was item #240 in Starrett's #21 catalog. Starrett Expansion Pliers with worm and rack adjustable jaw allows for parallel jaw faces throughout the tool's range as well as a vastly enlarged overall range of sizes.
980,362	Jan. 03, 1911	Combined Square and Bevel Protractor	Laroy S. Starrett	Athol, Worcester County, MA	This is Starrett's Builders Combination Tool, #439.
986,772	Mar. 14, 1911	Folding Steel Rule	Robert J. Simpson	Athol, MA
1,002,019	Aug. 29, 1911	Thread Gage	John A. Adell	Orange, MA	Patent for the idea of locking the gage leaves on the gage but it does not claim a specific construction configuration. According to the text, conventional construction required that the user of a thread gage to hold the the leaf with the thumb and finger, getting in the way when checking threaded holes. Utilized on Starrett's No 473 Thread Gage
1,006,509	Oct. 24, 1911	Vise-jaw Attachment	Laroy S. Starrett	Athol, Worcester County, MA
1,006,508	Oct. 24, 1911	Spindle Lock	Laroy S. Starrett	Athol, MA	Ellis Spear Jr. - patent attorney
1,011,262	Dec. 12, 1911	Combination Tool	Laroy S. Starrett	Athol, Worcester County, MA
1,012,226	Dec. 19, 1911	Vise	Laroy S. Starrett	Athol, MA
1,039,831	Oct. 01, 1912	Work Clamp	James G. Sisson	Athol, MA	Adjustable, locking handle hand vise. Known examlple is marked: THE L.S.STARRETT CO./ATHOL,MASS.U.S.A./PAT.OCT.1.1912/No.200
1,056,848	Mar. 25, 1913	Ratchet Wrench	Laroy S. Starrett	Athol, MA	The first of two patents related to the Starrett no. 443 ratchet. Some of the ratchets are marked "patent pending" or "patent applied for", and some "Patent Jan. 11, 1916." That refers to Starrett's 2nd patent relating to this ratchet, no. 1,167,948. Ellis Spear Jr. - patent attorney
		Ratchet Wrench	John A. Adell	Athol, MA
1,056,849	Mar. 25, 1913	Folding Tape-reel	Laroy S. Starrett	Athol, MA
1,098,694	Jun. 02, 1914	Micrometer	Laroy S. Starrett	Athol, MA	Micrometer with locking device that uniformily locks around the circumference of the spindle using two cam rings.
1,121,891	Dec. 22, 1914	Vise	Dresser T. Bates	Orange, Franklin County, MA
1,144,367	Jun. 29, 1915	Test Indicator	Henry A. Lowe	Cleveland, OH	Thurston & Kries - patent attorneys H. A. Lowe was bought out by L. S. Starrett in 1935. They were sold as Last Word Indicators. The flat side opposite the clamping arrangement is marked in two lines Pat. June 29 -15/Others pending. The dial is marked Model - C 1"/1000 Last Word.
1,167,948	Jan. 11, 1916	Ratchet wrench	John A. Adell	Athol, MA	The 2nd patent related to the Starrett No. 443 ratchet; this patent focuses on the extension and universal joint in the overall ratchet described in patent no. 1,056,848.
		Ratchet wrench	Laroy S. Starrett	Athol, MA
1,192,089	Jul. 25, 1916	Gage	Alexander Meldrum	Syracuse, NY
1,202,114	Oct. 24, 1916	Combined Gage and Level	Laroy S. Starrett	Athol, MA	Functions as a square and level necessary for setting up mills and planers. Uses a level in the base of a right triangle with a slideway on the hypotenuse that is provided with both steps as well as provides for a removeable extension stud. Produced as the No. 246 Planer Gage by Starrett.
1,210,558	Jan. 02, 1917	Pliers	Laroy S. Starrett	Athol, MA	These pliers were advertised as #276 Cut-Pliers in L.S. Starrett's catalog #21.
1,259,799	Mar. 19, 1918	Hacksaw	Laroy S. Starrett	Athol, MA
1,290,497	Jan. 07, 1919	Hacksaw-Machine	John W. Boynton	Athol, Worcester County, MA
1,304,714	May. 27, 1919	Tool-driver	Laroy Starrett	Athol, MA
1,365,203	Jan. 11, 1921	Tool maker's button	Arthur H. Starrett	Athol, MA	One of these appeared in a Martin J. Donnelly tool list.
D57,548	Apr. 12, 1921	Design for a prick-punch, nail-set, or article of similar nature	Arthur H. Starrett	Athol, MA	Arthur Starrett was Laroy Starrett's Grandson.
1,384,105	Jul. 12, 1921	Fine adjustment bevel protractor and the like	Laroy S. Starrett	Athol, MA
		Fine adjustment bevel protractor and the like	John A. Adell	Athol, MA
1,415,489	May. 09, 1922	Pocket Tape	Robert Simpson	Athol, MA	Tape on ebay marked with the patent date and NO. 500-60. 60" tape 1 1/4" in diameter X 1/4" thick
1,419,306	Jun. 13, 1922	Indicating Surface Gauge	William H. Reisner	Hagerstown, Washington County, MD
1,428,996	Sep. 12, 1922	Vise	Laroy S. Starrett	Athol, MA	This is Laroy Starrett's last patent; he had died on 1922-04-23.
1,438,617	Dec. 12, 1922	Steel Rule with Holder	Arthur Hermone Starrett	Athol, MA	Holder designed to clamp a short ruler so that it can be placed against generally inaccessable surfaces.
1,439,282	Dec. 19, 1922	Twist Drill Gauge	Albert Washington Amsden	Athol, MA	This is a simple gage used to check the angles and point location on a twist drill bit after grinding
1,442,415	Jan. 16, 1923	Bench block	Arthur H. Starrett	Athol, MA
1,473,803	Nov. 13, 1923	Hack saw	Arthur H. Starrett	Athol, MA	Arthur Starrett was Laroy Starrett's grandson. He started as an apprentice at the L. S. Starrett Co. in 1902 and became president of the company in 1946. He retired in 1962. This hacksaw was advertised as model #489 in Starrett catalog #21, page 227. (See image #2)
		Hack saw	John A. Adell	Athol, MA
1,473,946	Nov. 13, 1923	Combination hand vise	Albert W. Amsden	Athol, MA	No. 86. Current production is No. 86A
		Combination hand vise	William D. Starrett	Athol, MA
1,486,908	Mar. 18, 1924	Adjustable Shank for Test Indicator	Henry A. Lowe	Cleveland, OH	Thurston, Rives & Hudson - patent attorneys H. A. Lowe was bought out by L. S. Starrett in 1935.
1,525,813	Feb. 10, 1925	Combination Square	Edward P. King	Anderson, Anderson County, SC
1,538,501	May. 19, 1925	Adjustable handle hack saw frame	Albert Washington Amsden	Athol, MA
1,597,058	Aug. 24, 1926	Hook Rule	John W. Crawford	Athol, Worcester County, MA
1,606,192	Nov. 09, 1926	Combined Depth Gauge and Protractor	James G. Sisson	Athol, Worcester County, MA
1,625,767	Apr. 19, 1927	Micrometer Caliper	Robert J. O. Simpson	Athol, MA	This Patent number is stamped on a #696 Crankshaft Distortion Gage. See Patent picture #2.
1,625,766	Apr. 19, 1927	Dial Indicator	Robert J. O. Simpson	Athol, MA	Ellis Spear Jr. - patent attorney
1,625,401	Apr. 19, 1927	Cylinder Gauge	Robert J. O. Simpson	Athol, Worcester County, MA
1,663,293	Mar. 20, 1928	Measuring Ruler	Alvin B. Cook	Athol, MA	Thin rule with 32d's and 64th's graduations with the second set of graduations on the opposite side on the back face of the rule and in a non-superimposed relation to the graduations on the front. This is to prevent the problems of breakage experienced with thin rules with the graduations on the same side and aligned as well as make the rule easier to use when changing between different scales.
1,672,695	Jun. 05, 1928	Angle Gauge	Robert J.O. Simpson	Athol, MA	A compact tool for measuring fixed angles. Consists of a bunch of blades, folding into a pocket-knife style sheath.
1,698,566	Jan. 08, 1929	Case for measuring tapes and the like	Robert J. O. Simpson	Athol, MA
1,744,856	Jan. 28, 1930	Feeler Gauge	Albert W. Amsden	Athol, Worcester County, MA
1,777,653	Oct. 07, 1930	Center Punch	Harry C. Rehm	Fort Wayne, Allen County, IN
1,821,398	Sep. 01, 1931	Micrometer Calipers	Robert J. O. Simpson	Athol, Worcester County, MA
1,847,906	Mar. 01, 1932	Cylinder Gauge	Robert J. O. Simpson	Athol, Worcester County, MA
1,852,760	Apr. 05, 1932	Cylinder Gauge	James G. Sisson	Athol, MA	Ellis Spear Jr. - patent attorney In utilizing this instrument it is placed in the cylinder bore with its flat lower face bearing on the face F of the cylinder block. It is positioned so that the blade 1 lies in one of the diametric planes of the cylinder axis and the face piece 2 is then pushed so as to bring the straight edge of the blade against the cylinder wall until it has established a definite bearing. In the case shown this bearing will be along the entire side of the cylinder and at a slight angle to the axis thereof as explained in connection with Fig. 1a. In case the wear has been in the lower regions of the cylinder the blade will establish contact only in the angular portion.
1,922,758	Aug. 15, 1933	Micrometer Depth Gauge	Knute Christopherson	Minneapolis, Hennepin County, MN
1,953,028	Mar. 27, 1934	Indicator	James G. Sisson	Athol, Worcester County, MA
1,965,131	Jul. 03, 1934	Alignment Gauge	Robert J. O. Simpson	Athol, Worcester County, MA
1,977,863	Oct. 23, 1934	Drum Frictioning Device	Robert J. O. Simpson	Athol, Worcester County, MA
1,986,540	Jan. 01, 1935	Dial Indicator	James G. Sisson	Athol, Worcester County, MA
1,994,422	Mar. 12, 1935	V-block	John R. Sasek	Edwardsville, IL	An improvement to the standard Starrett V-block and clamp to provide improved base for holding it to a bench or machine, including at an angle. It was sold as the L. S. Starrett Co. No. 567 V Block and Clamp.
2,013,176	Sep. 03, 1935	Dial Indicator	James G. Sisson	Athol, Worcester County, MA
2,030,864	Feb. 18, 1936	Inside Micrometer Centering Device	Harry C. Gielow	Elgin, IL	Charles O. Shewey - patent attorney
2,074,279	Mar. 16, 1937	Dial Indicator	James G. Sisson	Athol, Worcester County, MA
2,075,754	Mar. 30, 1937	Adjustable Spring Ratchet for Micrometer Spindles	Arthur E. Williams	Athol, MA	Ellis Spear Jr. - patent attorney
2,148,156	Feb. 21, 1939	Combined Parallel Work Support and Clamp	Avides Hagopian	Springfield, Hampden County, MA
2,165,017	Jul. 04, 1939	Dial Indicator	James G. Sisson	Athol, MA
2,194,085	Mar. 19, 1940	Rule Clamp	James E. Hastings	Athol, MA	These Rule Clamps are offered in the L. S. Starrett Co. catalog as items #289 and #299. They are still in the current catalog. The older versions have the patent number stamped in them. Please see links for current Starrett calalog listings.
2,199,236	Apr. 30, 1940	Inside Micrometer Attachment	Cliffton Bigwood	Athol, MA	Spear, Rawlings & Spear - patent attorneys
2,199,223	Apr. 30, 1940	Handle for Inside Micrometer or the Like	James E. Hastings	Athol, Worcester County, MA
2,199,235	Apr. 30, 1940	Hook Rule	Chester Paul Ashel	Appleton, Outagamie County, WI
2,200,479	May. 14, 1940	Dial thickness gauge	Arthur H. Starrett	Athol, MA	Spear, Rawlings and Spear-patent attorneys
		Dial thickness gauge	James G. Sisson	Athol, MA
2,206,817	Jul. 02, 1940	Precision Spirit Level	David W. Mann	Lincoln, Middlesex County, MA
2,215,259	Sep. 17, 1940	Strain Gauge	Chester W. E. Witter	Ridgewood, Bergen County, NJ
		Strain Gauge	James G. Sisson	Athol, Worcester County, MA
2,217,648	Oct. 08, 1940	Adjustable Locking Multileaf Gauge	Clifton G. Bigwood	Athol, MA	Low cost, quick acting blade lock. Utilizes a concentric raised cam surface on both the surface of the tool as well as on the rotating tightening disk. Applied to Starrett's No 178-A Radius Gage and likely other similar tools.
2,242,116	May. 13, 1941	Step Attachment for Planer and Shaper or like Gauges	Carlton S. Dunaway	Indian Orchard, MA	Spear, Rawlings & Spear - patent attorneys
2,242,151	May. 13, 1941	Attachment for Test Indicators	James G. Sisson	Athol, Worcester County, MA
2,258,175	Oct. 07, 1941	Adjustable Dial Test Indicator Mounting	James O. Coleman	Los Angeles, CA
2,267,332	Dec. 23, 1941	Direct Reading Positive Measuring Micrometer Gauge	Albert G. Hagstrom	West Hartford, CT	Arthur B. Jenkins - patent attorney This patent was used on the No. 221 Starrett micrometer.
2,275,258	Mar. 03, 1942	Tape Reel	James E. Hastings	Athol, Worcester County, MA
2,286,859	Jun. 16, 1942	Magnifying Point Spotting Hammer	Allan M. Lake	Detroit, MI	Hammer with magnifying glass to assist in accurately placing a center punch. This was sold by L. S. Starrett as their No. 815.
2,326,410	Aug. 10, 1943	Telescoping Gauge	George T. Swinney	Los Angeles, Los Angeles County, CA
2,335,775	Nov. 30, 1943	Gauge	Leslie H. Laughton	Orange, MA	Spear, Rawlings & Spear - patent attorneys
2,392,617	Jan. 08, 1946	Cylindrical Test Gauge	James G. Sisson	Athol, Worcester County, MA
2,448,440	Aug. 31, 1948	Mechanics Square	Elmer I. King	Jeannette, Westmoreland County, PA
2,456,505	Dec. 14, 1948	Clamping Unit for Surface Gauges and the Like	James E. Hastings	Athol, Worcester County, MA
2,471,684	May. 31, 1949	Machinist's Gauge	James E. Hastings	Athol, Worcester County, MA
2,520,884	Aug. 29, 1950	Clamp	Max Laube	Minneapolis, Hennepin County, MN
2,528,201	Oct. 31, 1950	Clamp	Frederick G. White	Orange, Franklin County, MA
2,533,522	Dec. 12, 1950	Shock Absorbing Attachment for Dial Indicators	James G. Sisson	Athol, Worcester County, MA
2,741,032	Apr. 10, 1956	Dial Indicator	Alfred H. Emery	Athol, Worcester County, MA
2,746,785	May. 22, 1956	Bezel Holding Ring	Alfred H. Emery	Athol, Worcester County, MA
2,783,542	Mar. 05, 1957	Height Gauge	James E. Hastings	Athol, Worcester County, MA
2,835,979	May. 27, 1958	Micrometer Nut and Binder Assembly	William P. Metevia	Athol, MA	Kenway, Jenney, Witter & Hildreth - patent attorneys
2,871,571	Feb. 03, 1959	Friction Thimble	William P. Metevia	Athol, Worcester County, MA
2,910,781	Nov. 03, 1959	Dial Hole Gauge	John J. Bishop	Templeton, Worcester County, MA
2,930,134	Mar. 29, 1960	Bore Measuring Dial Gauge	John J. Bishop	Templeton, Worcester County, MA
3,104,470	Sep. 24, 1963	Gage with Adjustable Pantograph Preloading Means	Robert A. Plante	Erving, Franklin County, MA
3,115,711	Dec. 31, 1963	Area Comparison Gage	Robert A. Plante	Erving, Franklin County, MA
3,117,178	Jan. 07, 1964	Optical Polygons	George D. Webber	Lakewood, Cuyahoga County, OH
3,458,939	Aug. 05, 1969	Diameter Gage	Robert A. Plante	Erving, Franklin County, MA
4,292,871	Oct. 06, 1981	Welded Edge Band Saw Tooth	Tom A. Neumeyer	Athol, Worcester County, MA	Abstract: A new tooth form for a welded edge band saw, which has a positive rake angle and an enlarged gullet space, while maintaining a large wedge angle, is disclosed. The tooth geometry has a wedge angle greater than positive rake tooth forms of previous design and a gullet space comparable to a zero rake angle standard tooth form. The new tooth form provides an improved cutting rate and useful life and it is particularly advantageous in connection with high speed heavy duty band saw apparatus.
		Welded Edge Band Saw Tooth	Francis W. Foster	Athol, Worcester County, MA
4,326,338	Apr. 27, 1982	Area Comparison Gage	Robert A. Plante	Erving, Franklin County, MA	Note: This patent lists the patentee's location as Irving, MA. Earlier patents for this patentee lists it as Erving, MA. Abstract: A gage for directly measuring the deviation in cross sectional area of a passage from a nominal value employs a hydraulic system having pistons operatively engaged therewith. The pistons move in response to movement of passage contacting finger elements and the hydraulic system responds to piston movement to generate a measure of the passage area. At least one set of the finger elements has rotatable passage contacting members, each member having an elongated passage contacting surface. Each member rotates about a respective axis positioned to keep the center of each contact surface in a fixed position relative to the finger. Stop means are provided by fixed outboard finger elements, juxtaposed opposite movable finger elements, for providing improved stability for positioning the comparison gage.
4,327,495	May. 04, 1982	Vane Airfoil Method and Apparatus	Robert A. Plante	Erving, Franklin County, MA	Note: This patent lists the patentee's location as Irving, MA. Earlier patents for this patentee lists it as Erving, MA. Abstract: A staging fixture for holding a single vane nozzle assembly in a predetermined position enables characterization of the effective throat area of the nozzle assembly. The fixture has a holding element for supporting the assembly in a central position, mechanical structure for locating the assembly in the holding element, a first reference surface structure having a first reference surface in opposed juxtaposition to the central position, and a second reference surface structure having a second reference surface in opposed juxtaposition to the central position and on a side opposite to that of the first reference surface. Open area measurements made with a standard reference vane element provide alignment or calibration measurements whereby leading and trailing "half areas" of a single vane airfoil assembly can be determined. An automated selection and vane retrieval method and apparatus provide for the automatic retrieval of the vanes from known storage locations and the assembly of the nozzle to provide specified total area and uniform air flow across the entire nozzle and circumference.
4,586,260	May. 06, 1986	Captive Displacement Measuring Instrument	Larry K. Baxter	Carlisle, Middlesex County, MA	Abstract: A scale and slider in a linear displacement measuring instrument have spaced opposed parallel surfaces bearing aligned patterns of thin flat conductive elements. The scale pattern consists of equally spaced parallel bars transverse to displacement with enlarged aligned central portions which form collectively a single set of coupling electrodes. A pair of aligned sensor electrodes are fixed on the surface of the slider opposite the coupling electrodes of the scale and matching arrays of transmitter elements are arranged on opposite sides of the sensor electrodes and grouped axially in space quadrature. Alternate interdigitated sets of the transmitter electrodes on the slider are excited with oppositely phased square wave signals. The signals picked up by the sensor electrodes on the slider are fed to separate coarse plate counting and fine plate interpolation circuits. In the fine count circuit, the displacement-dependent amplitude of the signals from first one and then the other of the sensor electrodes is amplitude demodulated and digitally converted by a dual slope integrator. The reference signal for the return slope is furnished by placing co-phase signals on the transmitter electrodes. Battery life is prolonged by staged power down modes which remove bias voltages from selected analog components while retaining limit values.
		Captive Displacement Measuring Instrument	Robert J. Buehler	Tewksbury, Middlesex County, MA
4,611,408	Sep. 16, 1986	Mechanical Averaging Gauge	Robert A. Plante	Erving, Franklin County, MA	Abstract: A mechanical averaging gauge for averaging displacements at a plurality of locations along the surface of an object. The gauge includes a measuring unit which is urged into contact with the surface of the object. Several probes extend from the measuring unit and rest on the surface of the object. The probes are interconnected by means of cylindrical sliding members in contact with the rear of each of the probes. Trapezoidal sliding members are disposed between the cylindrical members so that the displacement of the measuring unit from a reference surface is the average of the various displacements of the individual probes. The arrangement also results in each probe contacting the surface of the object with substantially equal force. Therefore, the arrangement has application as a clamping device.
4,920,723	May. 01, 1990	Hollow Granite Box Beam and Method of Forming	Douglas R. Porter	Mount Airy, Surry County, NC	Abstract: A box beam comprises at least two elongated component blocks of granite, each containing at least one flat surface, the flat surfaces having identical dimensions. Igneous rock material is removed from the flat surface of at least one of the component blocks so as to form at least one open cavity in that component block. The interior cavity has boundary walls of a predetermined, though not necessarily uniform, thickness. The two component blocks are then bonded together along the remaining unremoved portions of the flat surfaces so as to form a box beam. The system described above for manufacturing hollow granite box beams reduces weight while maintaining stiffness comparable to that of the composite ceramic or metal beams along with the inherent stability of granite, e.g., low coefficient of thermal expansion, in a highly efficient manufacturing process.
4,929,082	May. 29, 1990	Laser Linear Distance Measurement System and Apparatus	George B. Webber	Rocky River, Cuyahoga County, OH	This patent was assigned to the Webber Gage Division of the L. S. Starrett Co. Abstract: A laser linear measurement system wherein a laser beam is generated and directed to an interferometer and reflected by a retroreflector movably mounted on a carriage or other component and adapted to travel forward to a set point, the said retroreflector having means adapted to be fulcrumed to move forwardly or rearwardly on an arc to reflect a parallel beam to the linear measuring interferometer and secure a true linear measurement of an object to be measured.
D334,717	Apr. 13, 1993	Chalk Line Marker	John J. Evans Jr.	Charleston, Charleston County , SC
		Chalk Line Marker	David Morris	North Charleston, Charleston County, SC
5,606,900	Mar. 04, 1997	Variable Height, High Performance, Bandsaw Blade and Method of Manufacture Therefor	Ralph Stoddard	Athol, Worcester County, MA	Abstract: A high performance, moderate cost bandsaw blade has a unique tooth configuration which enables it to provide high performance, while using standard manufacturing processes and available bandsaw equipment. The bandsaw blade has a straight back edge and a repeating tooth pattern wherein each set tooth, of each repeating tooth pattern has a set which is a monotonically increasing function of the height of the tooth. The height of each tooth in the repeating tooth pattern increases from the first tooth of the pattern to the last tooth of the pattern. The height difference between the beginning and end of a tooth pattern is preferably on the order of ten to twenty-five thousandths of an inch, more preferably between fifteen and twenty thousandths of an inch, and the length of a repeating pattern is typically about six inches to match a standard cutter.
5,658,102	Aug. 19, 1997	Hole Saw Arbor Method and Apparatus	Ronald D. Gale	Athol, Worcester County, MA	Abstract: A hole saw arbor includes an arbor body defining an axial rotation axis and has, at one end, a shank for mounting to a drill chuck, and at the other end, a hole saw receiving, axially directed, threaded shaft. The arbor includes a thrust member coaxially received by the arbor body such that the thrust member is movable in the direction of the rotation axis. The arbor further has at least one movable pin retained by the arbor body in the direction of the threaded shaft for engaging a corresponding hole in a bottom surface of the hole saw, to prevent rotation of the hole saw relative to the arbor body; and an adjustable locking member for locking the thrust member against the bottom surface of the hole saw. Thereby the hole saw, when engaged by the thrust member and the at least one pin, does not wobble off-axis.
D419,081	Jan. 18, 2000	Tape Measure	John J. Evans Jr.	Charleston, Charleston County , SC
		Tape Measure	Roger Dennis Thibodeau	North Charleston, Charleston County, SC
		Tape Measure	Wayne Patrick Phillips	Hudson, St. Croix County, WI
		Tape Measure	Jerome Allan Grunstad	Inver Grove Heights, Dakota County, MN
D441,309	May. 01, 2001	Tape Measure	John J. Evans Jr.	Charleston, Charleston County , SC
		Tape Measure	Roger Dennis Thibodeau	North Charleston, Charleston County, SC
		Tape Measure	Wayne Patrick Phillips	Hudson, St. Croix County, WI
		Tape Measure	Jerome Allan Grunstad	Inver Grove Heights, Dakota County, MN
D453,694	Feb. 19, 2002	Tape Measure	John J. Evans Jr.	Charleston, Charleston County , SC
		Tape Measure	Roger Dennis Thibodeau	North Charleston, Charleston County, SC
		Tape Measure	Wayne Patrick Phillips	Hudson, St. Croix County, WI
		Tape Measure	Jerome Allan Grunstad	Inver Grove Heights, Dakota County, MN
D471,118	Mar. 04, 2003	Tape Measure	John J. Evans Jr.	Charleston, Charleston County , SC
D478,800	Aug. 26, 2003	Overmolded Pressure Point Knife	Clayton S. Adams	Orange, Franklin County, MA
D487,025	Feb. 24, 2004	Tape Measure	Jerome Allan Grunstad	Inver Grove Heights, Dakota County, MN
		Tape Measure	Michael Horvath	Cottage Grove, Washington County, MN
		Tape Measure	David C. Munkwitz	Eau Claire, Eau Claire County, WI
		Tape Measure	Wayne Patrick Phillips	Hudson, St. Croix County, WI
8,826,790	Sep. 09, 2014	Saw Blade	Keith Mabon	, Scotland	Abstract: A saw blade including a base and a plurality of teeth extending generally outwardly from the base. At least one of the plurality of teeth comprises a first and a second portion. The first portion includes a cutting tip having an initial rake angle and the second portion includes a cutting tip having a second rake angle greater than the initial rake angle. The second portion is disposed closer to the base than the first portion.
		Saw Blade	Andrew Lee	, Scotland
10,976,646	Apr. 13, 2021	Optical Video Measurement System Having Interchangeable Optics	Robert Yates	Newport Beach, Orange County, CA	Abstract: A mounting assembly for an optical video system may include a platform having a track extending longitudinally along the platform. A camera mount may be slideably coupled to the track. A camera may be coupled to the camera mount. The camera may include a receptacle for engaging an interchangeable lens assembly. The mounting assembly for the optical video system may also include a biasing mechanism, wherein the biasing mechanism urges the camera mount along the track such that the receptacle engages the interchangeable lens assembly.
		Optical Video Measurement System Having Interchangeable Optics	Mark G. Arenal	Mission Viejo, Orange County, CA
		Optical Video Measurement System Having Interchangeable Optics	Robert D. Picone	Laguna Hills, Orange County, CA