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Publication numberUS66585 A
Publication typeGrant
Publication dateJul 9, 1867
Publication numberUS 66585 A, US 66585A, US-A-66585, US66585 A, US66585A
InventorsH. A. Haeyey
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
haeyey
US 66585 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

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@te tlgthvfle referat tu in these tettert ttmt unt mating putt nf tigt same.

TO ALL WHOM IT MAY CONOERN:

Be it known that I, H. A HARVEY, of the city, county, and State of New York, have invented a new and useful improvement in Wood-Screws and I do hereby declare that-the following is afull, clear, and exact )description thereof', which will enable others skilled in the art to make and use the same, reference lbeing had yte the accompanying drawings, forming part of this specifica-tion. l

The object of this invention is to construct the head of a gimlet-pointed wood-screw of a globular or spherical form, and to provide for driving it without cutting the ordinary nick across its face. And the iuvention consists in boring holes obliquely into the head, the direction of which shall be at about an angle of fortyl'ive degrees with' the shank of the screw, whereby, with a properly constructed' `screw-driver, the screw may be driven without injury to the head. The drawing.-

Figure 1, represents a longitudinal sectional view of a gimlet-pointed screw constructed according to my plan.

Figure 2 is' atop view of the head.

Figure 3 is a longitudinel section of a screw-driver designed for this kind of screw.

Similar letters of reference indicate corresponding parts.

a a represent the holes which are made in the globular head of the screw.

It is well known that although globular-headed screws present a much more neat and handsome appearance than the ordinary fiat-headed screw, they are but little used `from the fact that the nick across the face of the head destroys its otherwise neat appearance, for in order to get a good hold with the common screw-driver, the nick must be very deep, which of course injures its appearance and increases its liability to burst open. These objections are obviated by my method of construction.

The jaws b b yof the screw-driver are springs, and c, in a slide, which, when it is slipped forward, brings the jaws' together sufficiently for the pins d d to enter the holes a a. It will be seen that the screw thus formed can be held, supported, and driven with the greatest facility in all situations. l

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. Constructing wood-screws of the globular-head form, with the oblique holes a a in the heads thereof', substantially as shown and described, in combination with the gimlet-pointed screw, as la new article of manufacture.

2. In combination with a screw thus formed, I claim the screw-driver B, constructed substantially as described for the purposes set forth.

. H. A. HARVEY.

Witnesses:

Wn. F. McNAMAnA, ALEX. F. ROBERTS.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2669896 *Jan 19, 1951Feb 23, 1954Clough Robert SRetractable jaw wrench having parallel resilient jaws
US2860675 *Jul 26, 1955Nov 18, 1958Anthony R CaglianoScrewdriver having screw retaining means
US2949949 *Jan 23, 1959Aug 23, 1960Vaughn Rudolph MSplit driver and removing tool
US3604487 *Mar 10, 1969Sep 14, 1971Richard S GilbertOrthopedic screw driving means
US4526071 *Nov 13, 1979Jul 2, 1985Melvin PostScrewdriver and joining device
US4781084 *Aug 25, 1987Nov 1, 1988Steen Carson DAdjustable socket-type wrench
US4938108 *Feb 6, 1989Jul 3, 1990Abraham LevyTheft-resistant fastener system
US6571588 *Nov 3, 2000Jun 3, 2003Po W. YuenSecurity nut and key assembly
US6746194 *Oct 11, 2001Jun 8, 2004Micron Technology, Inc.Low profile fastener having a repositionable handle clip
US6811365 *Dec 6, 2002Nov 2, 2004Brant MonsonBolt and method of use
US6860177 *Oct 3, 2002Mar 1, 2005Valvosanitaria Bugatti S.P.A.Anti-fraud lock screw with a freely rotating dome on a polygonal head
US7246540 *Dec 30, 2004Jul 24, 2007Rillera Robert PNut and bolt holder and starter
US7494311 *Apr 19, 2003Feb 24, 2009Fuerle Richard DUndercut screw and matching bit
US8162947 *Apr 2, 2008Apr 24, 2012Arthrex, Inc.Dome shaped implant and inserter
US20080249577 *Apr 2, 2008Oct 9, 2008Dreyfuss Peter JDome shaped implant and inserter
Classifications
Cooperative ClassificationY10S411/91, Y10S411/919, B25B23/106