Welcome! 

Register :: Login
Manufacturers Index - Zagar Tool, Inc.
Patents
This page contains information on patents issued to this manufacturer.

Submitting Patent Information

If you find a patent number or patent date by this manufacturer that is not on this list, please contact the Site Historian.


Key to Links for Patent Information

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
416,053 Oct. 26, 1943 Indexing chuck Frank G. Zagar Cleveland, OH
2,335,721 Nov. 30, 1943 Indexing chuck Frank G. Zagar Cleveland, OH
440,448 Mar. 25, 1947 Chuck Frank G. Zagar Cleveland, OH
2,466,651 Apr. 05, 1949 Chuck Frank G. Zagar Euclid, OH Patent 3,042,418 claims to improve on this invention by doing away with the need to screw the collet onto the chuck, which caused concentricity errors because of poor tolerances in the threads of mass-produced collets.
459,557 Sep. 06, 1949 Multiple spindle driving mechanism Frank G. Zagar Cleveland, OH
462,292 Jan. 03, 1950 Broach holder Frank G. Zagar Cleveland, OH
2,522,736 Sep. 19, 1950 Parallel motion multiple spindle head Frank G. Zagar Cleveland, OH
2,550,649 Apr. 24, 1951 Control mechanism for hydraulic cutter operating and carriage shifting motors of machine tools Frank G. Zagar Euclid, OH
473,189 Apr. 24, 1951 Parallel motion multiple spindle heads Frank G. Zagar Cleveland, OH