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Manufacturers Index - William L. Procunier | Procunier Safety Chuck Co.

William L. Procunier | Procunier Safety Chuck Co.
Chicago, IL, U.S.A.
Company Website: http://www.rockford-ettco.com/CreatechName.aspx
Manufacturer Class: Metal Working Machinery

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

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Patent Number Date Title Name City Description
164,999 Jun. 29, 1875 Improvement in Bits for Boring Wood Gardner L. Holt Springfield, MA Holt cites a combination of a "reamer point," sharp edged spiral grooves and slightly enlarged diameter threaded portion of the shaft where it enters the head as the basis for this patent.

The 1884 catalog of post-drill maker J. W. Manneer features "Holt's Patent Gimlet Bits" on page 14. The illustration shows the maker's name of G. L. Holt, as well as the patent date.
900,122 Oct. 06, 1908 Yielding Bit and Tap Chuck William L. Procunier Chicago, Cook County, IL
1,037,796 Sep. 03, 1912 Bit and tap and die chuck William L. Procunier Chicago, IL
1,117,241 Nov. 17, 1914 Bit and tap chuck William L. Procunier Chicago, IL See also patent 1,037,796.
1,781,192 Nov. 11, 1930 Tapping attachment Harry G. Procunier Chicago, IL This patent simplifies the original Procunier tapping attachment.
1,857,012 May. 03, 1932 Tap holder Mark H. Corley Chicago, IL Improvement on patent 1,117,241.
1,873,476 Aug. 23, 1932 Tap holder Harry G. Procunier Chicago, IL This chuck-and-collet system is used on Procunier tapping heads.
2,098,675 Nov. 09, 1937 Tool-holding chuck and collet therefor Harry G. Procunier Chicago, IL