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Manufacturers Index - LaPointe Machine Tool Co.

LaPointe Machine Tool Co.
Hudson, MA, U.S.A.
Manufacturer Class: Wood Working Machinery & Metal Working Machinery

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
371,847 Oct. 18, 1887 Machine for polishing pinion-leaves Joseph N. Lapointe Waterbury, CT This patent was issued at least a decade before the inventor established Lapointe Machine Tool Co., so we assume that the patented machine was not made by them.
685,772 Nov. 05, 1901 Key-seat cutter Joseph N. Lapointe Hartford, CT This invention is for the cutting tool itself rather than the machine that uses it.
704,348 Jul. 08, 1902 Grinding-machine Joseph N. Lapointe Hyde Park, MA
716,438 Dec. 23, 1902 Reamer Joseph N. Lapointe Hyde Park, MA "With such tools as finishing-reamers when used in a turret-machine it is necessary to allow some later play in the support to provide for correct centering in the work, and when they are of large diameter and therefore heavy the natural tendency is for them to sag downward, so that upon entering the work their weight causes them to cut most deeply at the lower side. This distortion gradually decreases as more of the body of the reamer comes into bearing upon the work, being a minimum when the entire length of the blade is in contact. Then as the reamer emerges from the hole this vertical elongation increases until the work is cleared. To obviate such defects are the principal objects of my invention."
716,439 Dec. 23, 1902 Reamer Joseph N. Lapointe Hyde Park, MA
849,738 Apr. 09, 1907 Reamer Francis J. Lapointe Roxbury, MA
876,277 Jan. 07, 1908 Key-seat-broaching machine Joseph N. Lapointe Boston, MA
1,088,828 Mar. 03, 1914 Cutter-bar and bushing therefor Francis J. Lapointe New London, CT