US240780A - smith - Google Patents

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Publication number
US240780A
US240780A US240780DA US240780A US 240780 A US240780 A US 240780A US 240780D A US240780D A US 240780DA US 240780 A US240780 A US 240780A
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Prior art keywords
screw
thread
ot
stock
wood
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Expired - Lifetime
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms; Pulleys; Sheaves
    • F16H55/02Toothed members; Worms
    • F16H55/22Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00Vices
    • B25B1/06Arrangements for positively actuating jaws
    • B25B1/10Arrangements for positively actuating jaws using screws
    • B25B1/103Arrangements for positively actuating jaws using screws with one screw perpendicular to the jaw faces, e.g. a differential or telescopic screw
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B33/00Features common to bolt and nut
    • F16B33/02Shape of thread; Special thread-forms
    • 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
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/19Gearing
    • Y10T74/19949Teeth
    • Y10T74/19953Worm and helical

Description

(No Model.)

J. D. SMITH.

Screw.

E.: A WINE.

INVENTORI MM ATTORNEYS.

UNITED STATES PATENT OFFICE.

JOHN D. SMITH, OF FAYETTEVILLE, NORTH CAROLINA.

SCREW.

SPECIFICATION forming' part of Letters Patent No. 240,780, dated April 26, 1881.l

Application filed October 18, 1880.

'new and Improved Screw"""""'and l do hereby declare that the following is a full, clear, and

exact description of thesame.

My invention relates more particularly to screws heretofore made entirely ot' wood and used to operate the vise-jaws of carpenters benches, but which by myimprovcd construction may be used for many purposes, such as for cider-presses, cotton-gine, and whenever a stron g cheap screw is employed.

The object ot'Y my invention is t0 make the thread ot' the screw in an extremely cheap and simple manner and ot' sufficient strength to resist all strains that may come upon' it, and that will be luorc durable, more et'ticient, and more easily operated than woodscrews ofthe usualconstruction.

To these ends my invention consists in form` ing a screw by winding a metal rod spirally around a cylindrical wooden body, and securing thetwo together by embedding the rodwhich constitutes the thread ofthe screw-in the wood, as hereinafter described.

In the accompanying drawings, Figure l is aside elevation of a section of screw made according to my invention; Fig. 2, a central longitudinal section thereof, and Fig.3 an elevay tion of the metal screw-thread detached.

The stock A is made ot' hard wood, and is of any required shape at its end to suit the purpose for which it is to be used. but in most cases has an enlarged head, A', through which a handle may be passed to operate it, and has a cylindrical portion, A2, around which the metal thread B is secured. This ma e done in various ways-as, for instance, cylindrical portion A2 of the stock may be" cut with a spiral depression, a, of a pitch to correspond with that of the thread, into which depression the metal thread B may be screwed on from (No model.)

the end ot" the stock, or into which it may be placed by wrapping it around the stock as the coil is made by suitable bending machinery. The thread B is preferably made ot" iron or steel, and may be shaped in cross-section to the established form for screw-threads, or it may be simply made of a rectangular bar. The ends b` b' ot' the bar or thread-coil are turned or bent in radially to enter holes a in `the bottom ot' the depression a, by which means, together with the spiral depression, the thread is securely held in place upon the stock.

Another mode of securing the thread to the stock in a simpler manner, and, by means of ordinary shop appliances, without the employment ot' a screw-cutting lathe to form. the depression a, is by first coiling the rod to the re quired shape and then reheatiug` it to a very highheat to expand it sufficiently to allowit to pass snugly over the cylindrical portion" A2 ofthe stock. The coil is then allowed to cool, and will burn the wood and shrink until it has embedded itself into the stock a sufficient distance to be firmly held upon the stock.

The nut into which the screw ts Ymay be made to conform to the thread ot' the screw in the, usual manner, and will work more freely upon it than it' the thread were made of wood, as it is well known that the friction between wood and iron is less than thefriction between wood and wood.

Other modes of securing the thread to the stock may be employed without departing from the spirit of my invention.

A screw for a carpeuters bench-vise which consists of a cylindrical wooden body and a metal rod coiled spirally around it and partly embedded in its surface, as specitied.

JOHN DAWSON SMITH.

Witnesses:

W. L. HAWLEY, CEAS. GLOVER.

US240780A smith Expired - Lifetime US240780A (en)

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US240780A true US240780A (en) 1881-04-26

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438237A (en) * 1944-01-07 1948-03-23 Alamo Corp Fence knob
US2524480A (en) * 1948-11-20 1950-10-03 Tamis C Schenk Bolt anchorage
US2637550A (en) * 1947-11-10 1953-05-05 Mckee Door Company Overhead door actuator
US3097477A (en) * 1963-07-16 Track press and track assembly tool therefor
US3186082A (en) * 1961-11-03 1965-06-01 Ulrich Bros Inc Method of forming a coil and mounting on a shaft
US3313172A (en) * 1961-11-03 1967-04-11 Ulrich Bros Inc Worms for worm and worm wheel assembly and method of forming the same
US20030180117A1 (en) * 2002-03-21 2003-09-25 California Polytechnic State Univ. Foundation, A California Nonprofit Public Benefit Corporation Flexible fastener
US7182566B1 (en) * 2002-04-29 2007-02-27 Charles Nelson Fastener having supplemental support and retention capabilities
US20090157123A1 (en) * 2007-12-17 2009-06-18 Andreas Appenzeller Dynamic bone fixation element and method of using the same
US20100290858A1 (en) * 2007-09-10 2010-11-18 Stefan Hettich Screw anchor for fastening add-on parts in concrete or brickwork
US20110142569A1 (en) * 2009-11-18 2011-06-16 Hagel Gerald W Fastener with hardened threads
US20110286814A1 (en) * 2008-04-02 2011-11-24 Ulrich Hettich Thread-furrowing screw
USD739220S1 (en) * 2014-09-30 2015-09-22 Lee Valley Tools Ltd. Wall fastener
US9339316B2 (en) 2012-03-13 2016-05-17 DePuy Synthes Products, Inc. Dynamic bone fixation element

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097477A (en) * 1963-07-16 Track press and track assembly tool therefor
US2438237A (en) * 1944-01-07 1948-03-23 Alamo Corp Fence knob
US2637550A (en) * 1947-11-10 1953-05-05 Mckee Door Company Overhead door actuator
US2524480A (en) * 1948-11-20 1950-10-03 Tamis C Schenk Bolt anchorage
US3186082A (en) * 1961-11-03 1965-06-01 Ulrich Bros Inc Method of forming a coil and mounting on a shaft
US3313172A (en) * 1961-11-03 1967-04-11 Ulrich Bros Inc Worms for worm and worm wheel assembly and method of forming the same
US20030180117A1 (en) * 2002-03-21 2003-09-25 California Polytechnic State Univ. Foundation, A California Nonprofit Public Benefit Corporation Flexible fastener
WO2003081081A2 (en) * 2002-03-21 2003-10-02 California Polytechnic State University Foundation Flexible e fastener
WO2003081081A3 (en) * 2002-03-21 2004-06-24 Univ California Polytechnic Flexible e fastener
US6955513B2 (en) * 2002-03-21 2005-10-18 California Polytechnic State University Foundation Flexible fastener
US20060088402A1 (en) * 2002-03-21 2006-04-27 California Polytechnic State University Foundation, A Nonprofit Public Benefit Corporation Flexible Fastener
US7249923B2 (en) * 2002-03-21 2007-07-31 California Polytechnic State University Flexible fastener
US7182566B1 (en) * 2002-04-29 2007-02-27 Charles Nelson Fastener having supplemental support and retention capabilities
US8430617B2 (en) * 2007-09-10 2013-04-30 Ludwig Hettich & Co. Screw anchor for fastening add-on parts in concrete or brickwork
US20100290858A1 (en) * 2007-09-10 2010-11-18 Stefan Hettich Screw anchor for fastening add-on parts in concrete or brickwork
US9763712B2 (en) 2007-12-17 2017-09-19 DePuy Synthes Products, Inc. Dynamic bone fixation element and method of using the same
US9414875B2 (en) 2007-12-17 2016-08-16 DePuy Synthes Products, Inc. Dynamic bone fixation element and method of using the same
US8114141B2 (en) 2007-12-17 2012-02-14 Synthes Usa, Llc Dynamic bone fixation element and method of using the same
US8690931B2 (en) 2007-12-17 2014-04-08 DePuy Synthes Products, LLC Dynamic bone fixation element and method of using the same
US20090157123A1 (en) * 2007-12-17 2009-06-18 Andreas Appenzeller Dynamic bone fixation element and method of using the same
US8920093B2 (en) * 2008-04-02 2014-12-30 Ludwig Hettich & Co. Thread-furrowing screw
US20110286814A1 (en) * 2008-04-02 2011-11-24 Ulrich Hettich Thread-furrowing screw
US8747042B2 (en) * 2009-11-18 2014-06-10 Simpson Strong-Tie Company, Inc. Fastener with hardened threads
US20110142569A1 (en) * 2009-11-18 2011-06-16 Hagel Gerald W Fastener with hardened threads
US9339316B2 (en) 2012-03-13 2016-05-17 DePuy Synthes Products, Inc. Dynamic bone fixation element
US9827029B2 (en) 2012-03-13 2017-11-28 DePuy Synthes Products, Inc. Dynamic bone fixation element
USD739220S1 (en) * 2014-09-30 2015-09-22 Lee Valley Tools Ltd. Wall fastener

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