US173356A - Improvement in screw-drivers - Google Patents

Improvement in screw-drivers Download PDF

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US173356A
US173356A US173356DA US173356A US 173356 A US173356 A US 173356A US 173356D A US173356D A US 173356DA US 173356 A US173356 A US 173356A
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screw
driver
head
drivers
improvement
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Expired - Lifetime
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00Spanners; Wrenches
    • B25B13/48Spanners; Wrenches for special purposes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/919Screw having driving contacts

Description

T. I. SLOAN.

SCREW-DRIVER.

Patented $212.8, 1876.

N- PETERS. FHOT UNITED STATES PATENT OFFICE.

THOMAS J. SLOAN,.OF NEW YORK, N. Y.

IMPROVEMENT lN SCREW-DRIVERS.

Specification forming part of Letters Patent No. 173,356, dated February 8, 1876; application filed January 22, 1876.

To an whom it may concern Be it known that I, THOMAS J. SLOAN, of the city, county, and State of New York, have invented an Improvement in Screw-Drivers, of which'the following is'a specification: This invention is designed for driving that variety of wood-screws in which the nick or groove in the head slopes laterally from the center of the head, and is deepest at the edges of the latter; the object of my said invention being to provide a driver whereby such screws may be driven with their heads flush with the surface of the material into which they are screwed, without that danger of tearing and disfiguring such material inevitably involved in the driving of such screws bya driver of adequate Width made after any of the plans hitherto in use.

My said invention consists in an angularlynotched'screw-driver, in which the corners of the driving edge are beveled ofi at an angle more or less coincident with the taper of the head of the screw to lie driven, whereby the driver is enabled to hold in the groove throughout the entire length thereof without projectingbeyoud the sides of the head, and thereby has the most effective hold upon the screw, without liability of laceratin g the material into which it is forced, even when the head is driven home flush with the surface of said material.

Figure 1 is a side view of a screw-driver made according to my invention, and Fig. 2

indicates the variety of wood-screws with which it is intended to be used.

The blade A of the driver is attached to the handle B, in the usual or any suitable man ner. In the end of the blade A is formed an angular notch, a, and from the outer corners d of this notch the corners of the driver itself are beveled otf, as shown at a c.

The screw shown in Fig. 2 has its nick or groove 6 deepening from a point, a", central to the head, laterally to the edges or sides 0 of the said head.

When the driver is applied to the head of the screw to drive the said screw, the angular notch a fits upon the central portion 11 of the said head, with the projecting portions b of the driver situate in the oppositely-sloping portions of the nick or groove 0, and the beveled corners ofthe driver flush, or nearly so,

with the adjacent surface f! of the head.

It will be seen from this that, while the driver is enabled to take the firmest possible hold upon the head, (being fitted into the whole of the groove or nick thereof,) no portion is permitted to project beyond the circum ference thereof, and all tearing of the material into which the screwis driven, even when the head of the latter is brought flush or even with the surface of said material.

What I claim as my invention is- The angularly-notched screw-driver, constructed with the beveled corners a. 0, substantially as and for the purpose set forth.

7 THOS. J. SLOAN. Witnesses: H. WELLs, J r.,

I ERNST BILHUBER.

US173356D Improvement in screw-drivers Expired - Lifetime US173356A (en)

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US173356A true US173356A (en) 1876-02-08

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470282A (en) * 1947-07-28 1949-05-17 Frederick C Baker Mounting for shafts and the like
US2815054A (en) * 1953-09-08 1957-12-03 Phillips Screw Co Removal tool for recessed head screws
US5004361A (en) * 1989-09-07 1991-04-02 Westinghouse Electric Corp. Fastener for use at cryogenic temperatures, and tool therefor
WO2000024324A1 (en) * 1998-10-26 2000-05-04 Musculoskeletal Transplant Foundation Edison Corporate Center Allograft bone fixation screw method and apparatus
US6162225A (en) * 1998-10-26 2000-12-19 Musculoskeletal Transplant Foundation Allograft bone fixation screw method and apparatus
US6554173B1 (en) * 1997-02-21 2003-04-29 Neil L. Currie Robertson driver
US6752049B1 (en) * 2002-02-11 2004-06-22 Thomas White Security fastener removing kit
US6840483B1 (en) * 2001-07-02 2005-01-11 Bellsouth Intellectual Property Corporation Cable feed bushing and method of installing a cable through a wall or other structure
US20090145270A1 (en) * 2007-12-05 2009-06-11 Heesch Gary V Torque reducing and stabilizing screwdrivers and slotted threaded fasteners and related methods
US20110095150A1 (en) * 2009-10-27 2011-04-28 William F. Geier Security mount
US9383060B2 (en) 2012-12-06 2016-07-05 Synergy Global Supply, Inc. Security wall rack and television mount combination

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470282A (en) * 1947-07-28 1949-05-17 Frederick C Baker Mounting for shafts and the like
US2815054A (en) * 1953-09-08 1957-12-03 Phillips Screw Co Removal tool for recessed head screws
US5004361A (en) * 1989-09-07 1991-04-02 Westinghouse Electric Corp. Fastener for use at cryogenic temperatures, and tool therefor
US6554173B1 (en) * 1997-02-21 2003-04-29 Neil L. Currie Robertson driver
US6162225A (en) * 1998-10-26 2000-12-19 Musculoskeletal Transplant Foundation Allograft bone fixation screw method and apparatus
US6506192B1 (en) 1998-10-26 2003-01-14 Musculoskeletal Transplant Foundation Allograft bone fixation screw
WO2000024324A1 (en) * 1998-10-26 2000-05-04 Musculoskeletal Transplant Foundation Edison Corporate Center Allograft bone fixation screw method and apparatus
US6840483B1 (en) * 2001-07-02 2005-01-11 Bellsouth Intellectual Property Corporation Cable feed bushing and method of installing a cable through a wall or other structure
US6752049B1 (en) * 2002-02-11 2004-06-22 Thomas White Security fastener removing kit
US20090145270A1 (en) * 2007-12-05 2009-06-11 Heesch Gary V Torque reducing and stabilizing screwdrivers and slotted threaded fasteners and related methods
US20110095150A1 (en) * 2009-10-27 2011-04-28 William F. Geier Security mount
US9383060B2 (en) 2012-12-06 2016-07-05 Synergy Global Supply, Inc. Security wall rack and television mount combination
US9581290B2 (en) 2012-12-06 2017-02-28 Synergy Global Supply, Inc. Security wall rack and television mount combination

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