Greenfield Tap & Die Corp. - Assigned Patents

Manufacturers Index - Greenfield Tap & Die Corp.

Greenfield Tap & Die Corp.
Greenfield, MA, 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
871,451	Nov. 19, 1907	Screw-cutting die and holder therefor	Albert J. Smart	Greenfield, MA	This die and holder was sold by Greenfield Tap & Die as the "Acorn Die and Holder", and appeared in the Catalog 39, which was published about 1918.
956,208	Apr. 26, 1910	Grinding-machine	Edward F. Smith	Greenfield, MA
965,970	Aug. 02, 1910	Tap Wrench	Frank O. Wells	Greenfield, Franklin County, MA	Chapin & Co., patent attorneys.
966,105	Aug. 02, 1910	Automatic die-head	Joseph P. Lavigne	Detroit, MI	"This invention relates to die heads for turret lathes, screw machines and the like, and especially to means therein whereby work engaged by the die is released at the end of the cutting movement and may be withdrawn without contact with the dies." The "Wells Self-Opening Die" is featured in a catalog of machine tools from Greenfield Tap & Die Corp.; the illustration resembles this patent and the page says "Patented August 2, 1910".
1,038,967	Sep. 17, 1912	Tap-wrench	Whitman Russell	Greenfield, MA
1,048,921	Dec. 31, 1912	Die-blank	Frederic E. Wells	Greenfield, MA	This patent was issued shortly after F. E. Wells & Son merged with Wiley & Russell Mfg. Co. to create Greenfield Tap & Die Co. But the two parent firms continued to advertise separately and mark their products with the old name for more than three years after the merger. This patented die was sold as F. E. Wells & Son's "O. K. screw plate". This patent covers a drop-forged die with a raised rim and radial ribs. The advertising for this die claimed that this design provided longer wear and improved chip clearance.
1,052,313	Feb. 04, 1913	Pipe-wrench	Addison B. Carll	Boothwyn, PA	10-inch long example reported with label, "GTD GREENFIELD, MASS, LITTLE GIANT".
1,061,129	May. 06, 1913	Screw-plate	Charles C. Russell	Greenfield, MA	At about the time this patent was issued the inventor co-founded Russell Mfg. Co. in Greenfield. He was treasurer, and Whitman Russell was president.
1,074,466	Sep. 30, 1913	Screw-plate	Charles C. Russell	Greenfield, MA	After this patent was applied for, but before it was issued, the inventor co-founded Russell Mfg. Co. in Greenfield. He was treasurer, and Whitman Russell was president.
1,130,542	Mar. 02, 1915	Screw-cutting die	Whitman Russell	Greenfield, MA	This screw-cutting die has teeth that can cut in either direction so that when the die gets dull it can be flipped over to use the fresh cutting edges.
1,307,426	Jun. 24, 1919	Limit Gage	Frank O. Wells	Greenfield, Franklin County, MA	This invention relates to limit-gages for testing the outside dimensions of work, and has for its primary object the provision of a single clamping screw and clamp proper for securing the points or anvils of each pair in set position. A further object is to provide means whereby the gage is rendered extremely sensitive in operation.
1,482,856	Feb. 05, 1924	Bearing for grinding spindles	Ralph L. Morgan	Worcester, MA
1,830,268	Nov. 03, 1931	Die holder	Michael J. Foley	Greenfield, MA	This patent number was seen on a Greenfield Tap & Die #335 Little Giant Jr. set, along with patent 1,898,132.
1,898,132	Feb. 21, 1933	Thread cutting die and holding clip therefor	Oscar E. Koehler	Greenfield, MA	This patent number was seen on a Greenfield Tap & Die #335 Little Giant Jr. set, along with patent 1,830,268.
		Thread cutting die and holding clip therefor	William B. du Mont	Greenfield, MA