Leavitt Machine Co. - Assigned Patents

Manufacturers Index - Leavitt Machine Co.

Leavitt Machine Co.
Orange, MA, U.S.A.
Manufacturer Class: 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
429,939	Jun. 10, 1890	Valve-reseating machine	Charles L. Morse	Athol, MA	This patent was not explicitly identified as assigned to Leavitt Machine Co., but we have seen a Leavitt chuck matching this design and bearing this patent date. Leavitt subsequently patented several improvements to this design, including patents 814,418 and 865,739.
456,704	Jul. 28, 1891	Machine for Reseating Valves	Charles L. Morse	Athol, Worcester County, MA
530,468	Dec. 04, 1894	Gage	Lucius O. Barrett	Brattleborough, VT	Here, Lucius Barrett improves upon his original roller gage patent (384,413) by using a clever arm locking scheme that allows both arms to be locked with a single screw. Other than the locking mechanism, this gage is identical to the original. This tool was produced in large quantites by the Leavitt Machine Company, and are thus fairly common. There are also known examples of the same tool manufactured by Robbins & Cowles, but these are significantly more scarce. Interestingly, both manufacturers marked the tool with the date of Barrett's first patent (6/12/88), rather than this one.
539,754	May. 21, 1895	Swing-support for barrels	George A. Hastings	Orange, MA
560,481	May. 19, 1896	Machine for repairing valves and valve-seats	Frank E. Dexter	Orange, MA
801,350	Oct. 10, 1905	Valve-reseating machine	Thomas B. Williams	Orange, MA
814,418	Mar. 06, 1906	Rotary cutting device	Thomas B. Williams	Orange, MA	Improvements to the valve-reseating tool of patent 429,939, granted to one Charles L. Morse.
824,321	Jun. 26, 1906	Valve-reseating machine	Thomas B. Williams	Orange, MA	Improvements to patent 801,350.
865,739	Sep. 10, 1907	Machine for facing valves, &c.	Thomas B. Williams	Orange, MA	Improvements to patent 429,939.
913,085	Feb. 23, 1909	Machine for facing valves, &c.	Thomas B. Williams	Orange, MA	Improvements to patent 865,739.
918,805	Apr. 20, 1909	Machine for reseating valves, &c.	Thomas B. Williams	Orange, MA
934,642	Sep. 21, 1909	Valve-reseating tool	Thomas B. Williams	Orange, MA	Improvement to patent 429,939.
944,002	Dec. 21, 1909	Valve-disk-cutting machine	Frank L. Smith	Chicago, IL
		Valve-disk-cutting machine	Thomas B. Williams	Orange, MA
956,918	May. 03, 1910	Valve-reseating tool	Thomas B. Williams	Orange, MA
1,012,926	Dec. 26, 1911	Rotary scraper	Thomas B. Williams	Orange, MA
		Rotary scraper	Frank L. Smith	Chicago, IL
1,028,295	Jun. 04, 1912	Valve-seat-dressing tool	Frank L. Smith	Chicago, IL
		Valve-seat-dressing tool	Thomas B. Williams	Orange, MA
1,036,394	Aug. 20, 1912	Machine for facing valve-seats	Thomas B. Williams	Orange, MA
1,090,243	Mar. 17, 1914	Rotary cutting mechanism	Frank L. Smith	Chicago, IL
		Rotary cutting mechanism	Thomas B. Williams	Orange, MA
1,227,499	May. 22, 1917	Facing-tool for dressing valve-seats, &c.	Frank L. Smith	Chicago, IL
		Facing-tool for dressing valve-seats, &c.	Thomas B. Williams	Orange, MA
1,227,511	May. 22, 1917	Facing-tool for dressing valve-seats, &c.	Frank L. Smith	Chicago, IL	Improvement to patent 429,939.
		Facing-tool for dressing valve-seats, &c.	Thomas B. Williams	Orange, MA
1,227,512	May. 22, 1917	Facing-tool for dressing valve-seats, &c.	Frank L. Smith	Chicago, IL	Improvement to patent 429,939.
		Facing-tool for dressing valve-seats, &c.	Thomas B. Williams	Orange, MA
1,227,513	May. 22, 1917	Facing-tool for dressing valve-seats, &c.	Frank L. Smith	Chicago, IL	Improvement to patent 429,939.
		Facing-tool for dressing valve-seats, &c.	Thomas B. Williams	Orange, MA
1,227,514	May. 22, 1917	Rotary cutter	Frank L. Smith	Chicago, IL
		Rotary cutter	Thomas B. Williams	Orange, MA
1,227,515	May. 22, 1917	Facing-tool for dressing valve-seats, &c.	Frank L. Smith	Chicago, IL
		Facing-tool for dressing valve-seats, &c.	Fred A. Dexter	Orange, MA
		Facing-tool for dressing valve-seats, &c.	Thomas B. Williams	Orange, MA
1,325,278	Dec. 16, 1919	Facing-tool for dressing valve-seats, &c.	Bayard P. Dexter	Orange, MA
		Facing-tool for dressing valve-seats, &c.	Fred A. Dexter	Orange, MA