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Manufacturers Index - Duro Metal Products Co.

Duro Metal Products Co.
Chicago, IL., U.S.A.
Manufacturer Class: Wood Working Machinery & Metal Working Machinery

Patents
This page contains information on patents issued to this manufacturer.

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USPTO = U.S. Patent Office . Images of the actual patent can be viewed on the U.S. Patent Office web site but a special TIFF viewer must be installed with your browser in order properly work. More information on how to configure your computer to view these patents can be found at TIFF image Viewers for Patent Images.
DATAMP = Directory of American Tool And Machinery Patents . A sister site to VintageMachinery.org with information on patents related to machinery and tools. A much easier user interface than the USPTO's for finding information on machinery patents.

Patent Number Date Title Name City Description
1,744,413 Jan. 21, 1930 Socket-wrench tool Norris F. McNaught Chicago, IL
    Socket-wrench tool Edward H. Peterson Chicago, IL  
1,749,300 Mar. 04, 1930 Valve grinder William H. Odlum Chicago, IL
    Valve grinder Edward Henry Peterson Chicago, IL  
1,751,657 Mar. 25, 1930 Operating mechanism for valve grinders Norris F. McNaught Chicago, IL Duro Metal Products Co. also manufactured woodworking machinery. This valve grinder was sold as the Duro No. 711.
    Operating mechanism for valve grinders Edward H. Peterson Chicago, IL  
1,788,535 Jan. 13, 1931 Socket-wrench kit Edward Henry Peterson Chicago, IL The patent focuses on the holder for a wrench set comprised of a ratchet, hex-shaft nut driver / handle, and hex drive sockets and screwdriver tip.
The top portion is a slip-in holder for the hex bar and ratchet. It hinges to one side to open the compartment for the sockets.
A known example is marked only with the patent number stamped in the base; the set may have had a paper label or come in a box.
    Socket-wrench kit Norris F. McNaught Chicago, IL  
1,798,481 Mar. 31, 1931 Ratchet lever Edward Henry Peterson Chicago, IL The ratchet driver that cites this patent uses the second form shown in the drawings. It was used as the driver handle in some DURO socket sets.
    Ratchet lever Norris F. McNaught Chicago, IL  
1,798,482 Mar. 31, 1931 Ratchet lever Edward Henry Peterson Chicago, IL
    Ratchet lever Norris F. McNaught Chicago, IL  
1,799,462 Apr. 07, 1931 Spare-tire lock Walter Lewis Hawkins St. Louis, MO
1,825,007 Sep. 29, 1931 Valve seat reconstruction tool Norris F. McNaught Chicago, IL
1,828,043 Oct. 20, 1931 Adjustable support for portable power saws Theron L. Hedgpeth Oakland, CA This invention is a kit to convert a handheld circular saw into a radial arm saw. The original patent application was split in two, the other part becoming patent 1,756,121.
Inventor Hedgpeth became an important inventor for Duro Metal Products Co.
1,846,641 Feb. 23, 1932 Radial saw arm Theron L. Hedgpeth Warsaw, IN This invention is a kit to convert a handheld circular saw into a radial arm saw. The patent is an improvement on patent 1,828,043.
Inventor Hedgpeth became an important inventor for Duro Metal Products Co.
1,851,313 Mar. 29, 1932 Spare tire lock Colvin L. Johnson St. Louis, MO
1,854,137 Apr. 12, 1932 Spare wheel or tire lock Walter L. Hawkins St. Louis, MO
1,857,211 May. 10, 1932 Wheel puller Edward Henry Peterson Chicago, IL
    Wheel puller Willam H. Odlum Chicago, IL  
1,858,372 May. 17, 1932 Valve spring compressor Edward H. Peterson Chicago, IL
    Valve spring compressor Norris F. McNaught Chicago, IL  
1,868,839 Jul. 26, 1932 Ratchet lever Edward H. Peterson Chicago, IL
    Ratchet lever Norris F. McNaught Chicago, IL  
1,868,840 Jul. 26, 1932 Ratchet lever Edward H. Peterson Chicago, IL
    Ratchet lever Norris F. McNaught Chicago, IL  
1,872,493 Aug. 16, 1932 Brake lining tool William H. Odlum Chicago, IL
    Brake lining tool Edward Henry Peterson Chicago, IL  
1,877,348 Sep. 13, 1932 Valve grinder Edward Henry Peterson Chicago, IL
    Valve grinder Norris F. McNaught Chicago, IL  
1,902,878 Mar. 28, 1933 Ratchet wrench Edward Henry Peterson Chicago, IL The main feature of this patent is the method of assembly. The component parts of the ratchet mechanism are inserted in the wrench body and after the side plates are in place, the assembly is compressed with double dies which fold the edges of the recess over the side plates and lock all the parts together.
The set in the 2nd photo is a DURO-CHROME No. 4490 refrigeration wrench including sockets with integral 1/4" studs to fit the 1/4" square drive in the ratchet head.
    Ratchet wrench Norris F. McNaught Chicago, IL  
1,903,058 Mar. 28, 1933 Means and method for applying brake shoe linings Edward Henry Peterson Chicago, IL
    Means and method for applying brake shoe linings Norris F. McNaught Chicago, IL  
1,921,225 Aug. 08, 1933 Spare wheel lock Walter L. Hawkins St. Louis, MO
1,932,796 Oct. 31, 1933 Grease ram Norris F. McNaught Chicago, IL
1,950,493 Mar. 13, 1934 Spare wheel and tire lock Colvin L. Johnson St. Louis, MO
1,952,087 Mar. 27, 1934 Valve guide and unseater Edward Henry Peterson Chicago, IL
    Valve guide and unseater Norris F. McNaught Chicago, IL  
1,968,215 Jul. 31, 1934 Tool for cleaning commutators and the like Edward Henry Peterson Chicago, IL
    Tool for cleaning commutators and the like Norris F. McNaught Chicago, IL  
RE19,341 Oct. 16, 1934 Ratchet Wrench and Method of Making the Same Norris F. McNaught Chicago, IL The ratchet is a rotating toothed disk, pawl and spring inside a drop forged frame, with side plates retaining the parts pressed into place. One of the side plates has a hole to oil the pawl and spring.

Herbert Fish's Dec. 18, 1951 split socket ratchet patent (no. 2,578,687) cites this patent in the "References."
    Ratchet Wrench and Method of Making the Same Edward H. Peterson Chicago, IL  
1,978,590 Oct. 30, 1934 Wrench joint Edward Henry Peterson Chicago, IL
    Wrench joint Norris F. McNaught Chicago, IL  
D95,825 Jun. 04, 1935 Design for a sanding machine Theron L. Hedgpeth Oak Park, IL
D97,643 Nov. 26, 1935 Table jointer Theron L. Hedgpeth Oak Park, IL
2,027,922 Jan. 14, 1936 Method of making wrench sockets Norris F. McNaught Chicago, IL
2,044,982 Jun. 23, 1936 Sanding machine Theron L. Hedgpeth Oak Park, IL
2,044,983 Jun. 23, 1936 Belt and pulley measuring apparatus Theron L. Hedgpeth Oak Park, IL
2,064,351 Dec. 15, 1936 Socket wrench kit Edward Henry Peterson Chicago, IL
    Socket wrench kit Norris F. McNaught Chicago, IL  
2,064,483 Dec. 15, 1936 Sanding machine Albert G. McCaleb Evanston, IL
2,065,341 Dec. 22, 1936 Socket wrench kit Edward Henry Peterson Chicago, IL
    Socket wrench kit Norris F. McNaught Chicago, IL  
2,065,340 Dec. 22, 1936 Socket wrench kit Edward Henry Peterson Chicago, IL
    Socket wrench kit Norris F. McNaught Chicago, IL  
D103,579 Mar. 16, 1937 Wrench Norris F. McNaught Chicago, IL The design incorporates multiple hex box and 8-point box openings. Produced as Duro Chrome No. D644.
2,075,282 Mar. 30, 1937 Bench saw Theron L. Hedgpeth Oak Park, IL
2,076,511 Apr. 06, 1937 Woodworking tool Theron L. Hedgpeth Oak Park, IL
2,080,475 May. 18, 1937 Stand for motor driven tools Theron L. Hedgpeth Oak Park, IL
D104,869 Jun. 08, 1937 Design For A Wrench Norris F. McNaught Chicago, IL Automotive multi-wrench design for several 1930's automobiles.
D105,337 Jul. 20, 1937 Design For A Wrench Norris F. McNaught Chicago, IL Automotive multi-wrench design for 1930's Ford automobiles.
D105,338 Jul. 20, 1937 Wrench Norris F. McNaught Chicago, IL The stamped steel wrench has three sizes of 12-point box, 1 square, and one 8-point.
D106,035 Sep. 14, 1937 Design for a band saw head Theron L. Hedgpeth Oak Park, IL
2,095,330 Oct. 12, 1937 Bench saw Theron L. Hedgpeth Oak Park, IL
2,097,920 Nov. 02, 1937 Bench saw table Theron L. Hedgpeth Oak Park, IL
2,099,519 Nov. 16, 1937 Woodworking tool Theron L. Hedgpeth Oak Park, IL See also patent 2,123,627.
2,101,709 Dec. 07, 1937 Bench saw rip fence Theron L. Hedgpeth Oak Park, IL
2,104,158 Jan. 04, 1938 Work guide for woodworking tools Theron L. Hedgpeth Oak Park, IL See also patent 2,076,511.
2,111,067 Mar. 15, 1938 Chuck for Woodworking Tools Theron L. Hedgpeth Oak Park, IL Williams, Bradbury, McCaleb & Hinkle—patent attorneys
Original application filed 02 May 1935. Divided and this application filed 31 Dec 1936.
2,123,627 Jul. 12, 1938 Woodworking tool Theron L. Hedgpeth Oak Park, IL See also patent 2,099,519.
D111,026 Aug. 23, 1938 Combination Tool William R. Hosford Chicago, IL Nut driver handle with sockets stored on the hexagonal shank.
Known example marked INDESTRO SUPER NO. 360 PAT DES. 111026 U.S.A. does not have a screwdriver tip on the shank.

Williams, Bradbury, McCaleb & Hinkle - patent attorneys.
2,154,745 Apr. 18, 1939 Power driven tool Theron L. Hedgpeth Oak Park, IL
2,176,572 Oct. 17, 1939 Power driven tool Theron L. Hedgpeth Oak Park, IL
2,188,595 Jan. 30, 1940 Mounting for power tool Theron L. Hedgpeth Oak Park, IL
D119,441 Mar. 12, 1940 Design For Battery Pliers William A. Sandy Chicago, IL Battery pliers with 1/2" and 9/16" 12-point box end wrenches on handle ends. Known examples marked DURO and BELDEN.
2,208,843 Jul. 23, 1940 Power driven tool Theron L. Hedgpeth Oak Park, IL Spring tensioning for scroll saw.
2,218,168 Oct. 15, 1940 Power tool Theron L. Hedgpeth Oak Park, IL
2,225,049 Dec. 17, 1940 Woodworking tool Theron L. Hedgpeth Oak Park, IL Improvements to patent 2,126,627.
2,237,556 Apr. 08, 1941 Miter gauge Theron L. Hedgpeth Oak Park, IL
2,256,624 Sep. 23, 1941 Wrench joint William H. Odlum Chicago, IL
2,274,923 Mar. 03, 1942 Band saw Theron L. Hedgpeth Oak Park, IL Bandsaw has tilt of upper wheel adjustment in front.
2,285,713 Jun. 09, 1942 Jig saw Theron L. Hedgpeth Oak Park, IL
2,363,350 Nov. 21, 1944 Tool for Sevicing Battery Terminals Walter P. Nail ON, Canada McCaleb, Wendt & Dickinson - patent attorneys
D143,931 Feb. 19, 1946 Tool Handle William H. Odlum Wilmette, IL McCaleb, Wendt & Dickinson - patent attorneys
2,395,681 Feb. 26, 1946 Ratchet mechanism Karl A. Paine Park Ridge, IL
    Ratchet mechanism William H. Odlum Wilmette, IL  
2,447,085 Aug. 17, 1948 Welded joint William H. Odlum Wilmette, IL
2,626,639 Jan. 27, 1953 Belt and pulley drive means for tiltable saws and the like Theophil A. Hess Chicago, IL
2,675,033 Apr. 13, 1954 Mounting means for rip fences for table saws Theophil A. Hess Chicago, IL
2,678,071 May. 11, 1954 Motor mounting and drive means for power tools William F. Hosford Chicago, IL
    Motor mounting and drive means for power tools William H. Odlum Wilmette, IL  
2,686,582 Aug. 17, 1954 Reversible drive mechanism William H. Odlum Wilmette, IL H. Thrall Brewer—patent attorney
This patent number appears on a Montgomery Ward Wardmaster half-inch ratchet wrench part # I84-4860R.
    Reversible drive mechanism William F. Hosford Chicago, IL  
2,740,437 Apr. 03, 1956 Clamping device for guide fence on work table Clarence C. Wieser Chicago, IL
    Clamping device for guide fence on work table William H. Hosford Chicago, IL  
    Clamping device for guide fence on work table William H. Odlum Wilmette, IL  
2,771,103 Nov. 20, 1956 Fence for the work-supporting table of a power tool Clarence C. Wieser Chicago, IL
    Fence for the work-supporting table of a power tool William H. Hosford Chicago, IL  
    Fence for the work-supporting table of a power tool William H. Odlum Wilmette, IL  
2,778,053 Jan. 22, 1957 Separable hinged mounting for motors or the like Paul B. McKain Chicago, IL
    Separable hinged mounting for motors or the like Theophil A. Hess Chicago, IL  
2,779,362 Jan. 29, 1957 Safety lock for cutter head of jointer Theophil A. Hess Chicago, IL
2,787,305 Apr. 02, 1957 Retaining means for power tool gauge William F. Hosford Chicago, IL
    Retaining means for power tool gauge Theophil A. Hess Island Lake, IL  
2,794,459 Jun. 04, 1957 Jig saw blower Clarence C. Wieser Chicago, IL
    Jig saw blower William F. Hosford Chicago, IL  
2,796,091 Jun. 18, 1957 Mounting for an axially movable motor William F. Hosford Chicago, IL
    Mounting for an axially movable motor William H. Odlum Wilmette, IL  
2,836,273 May. 27, 1958 Reversible one-way drive mechanism William F. Hosford Chicago, IL See also patent 2,686,582.
    Reversible one-way drive mechanism William H. Odlum Wilmette, IL  
2,841,289 Jul. 01, 1958 Wall rack for mechanics' tools John R. Gracious Glenview, IL
    Wall rack for mechanics' tools William H. Odlum Wilmette, IL  
2,852,047 Sep. 16, 1958 Tilting and elevating mechanism for a disc type table saw William F. Hosford Chicago, IL "...it is accordingly among the more specific objects of this invention to fabricate the elevating and tilting mechanism from sheet metal stampings in lieu of castings to reduce the cost thereof while at the same time increasing their rigidity."
    Tilting and elevating mechanism for a disc type table saw William H. Odlum Wilmette, IL  
2,901,767 Sep. 01, 1959 Separable mountings for electric motors or the like William F. Hosford Chicago, IL
    Separable mountings for electric motors or the like William H. Odlum Wilmette, IL  
2,911,700 Nov. 10, 1959 Separable mountings for electric motors or the like Harry H. Wieland Chicago, IL
2,913,200 Nov. 17, 1959 Separable mounting for electric motors or the like Paul B. McKain Chicago, IL
    Separable mounting for electric motors or the like Karl A. Paine Jr. Park Ridge, IL  
RE24,862 Aug. 23, 1960 Wall Rack for Mechanics' Tools William H. Odlum Wilmette, IL H. Thrall Brewer - patent attorney
3,041,023 Jun. 26, 1962 Separable mountings for electric motors or the like William F. Hosford Chicago, IL See also patent 2,901,767.
    Separable mountings for electric motors or the like William H. Odlum Wilmette, IL  
4,277,990 Jul. 14, 1981 Ratchet wrench Roy L. Hall Hoffman Estates, IL