US1523932A - Set screw and the like - Google Patents

Set screw and the like Download PDF

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Publication number
US1523932A
US1523932A US646071A US64607123A US1523932A US 1523932 A US1523932 A US 1523932A US 646071 A US646071 A US 646071A US 64607123 A US64607123 A US 64607123A US 1523932 A US1523932 A US 1523932A
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US
United States
Prior art keywords
socket
pad
set screw
screw
spherical
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US646071A
Inventor
Davies Albert William
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Mavor and Coulson Ltd
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Mavor and Coulson Ltd
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Filing date
Publication date
Priority claimed from GB1789122A external-priority patent/GB201008A/en
Application filed by Mavor and Coulson Ltd filed Critical Mavor and Coulson Ltd
Priority to US646071A priority Critical patent/US1523932A/en
Application granted granted Critical
Publication of US1523932A publication Critical patent/US1523932A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/005—Set screws; Locking means therefor
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7041—Interfitted members including set screw
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2568—Center

Definitions

  • This invention refers to set screws and the 0 like, hereinafter referred to as set screws, for use generally and particularly suitable for use under conditions where vibration, or heating (or both) occurs.
  • F or example for securing cutter picks in the blocks of cutter chains of coal cutting machines, and generally in substitution for the usual cupped and hardened set screw, and the invention relates to improvements in or con nected with the known type of set screw which at its outer end is provided with a pad to engage with the surface on which the screw is to be tightened, the pad being mounted in a socket formed in the outer end of the set screw from which socket the pad projects and is capable of rotation about the axis of the screw, so that when the pad is in bearing contact it does not rotate with the screw in the process of tightening.
  • the pad comprises a body principally of spherical form
  • a flat surface portion of non-spherical form say, a contact portion at its head comprising, for example, a cutting or indenting edge, say of circular form, or other form of edge or edges the depth of the socket in the outer end of the set screw and the size oi the pad being such that the sides oi? the socket extend above the centre of the spherical body of the pad and are closed in to retain the pad in position, and the form of seating and socket being such as will restrict rotational movement of the pad to rotation only about the axis of the set c5 screw.
  • a hardened steel ball may be used on which a seating of non-spherical form is formed by grinding to produce, say, a flat base and opposite the base a contact portion may be produced by grinding so as to present, say, a circuiar cutting or indenting edge.
  • the set screw may be formed with a cylindrical socket at its end, the axis of; the socket being co-axial 1923. Serial No. 646,071.
  • the inner end of the socket presenting aplane transverse surface, and the depth of the socket and size of the pad is such that the sides of the socket project above the original centre of the ball.
  • the pad is placed in the socket so that its fiat base rests upon the surface of the inner end of the socket and the metal at the sides is then closed in to embrace the body of the pad in such a manner that the pad is free to rotate about the axis of the set screw, but is prevented from rotating other wise or of moving endwise to any appreciable extent.
  • A designates a cylindrical socket formed in the end of the screw
  • B the pad which is formed with a flat base 2 and at its head with a concave recess, the axis of which lies in the axis of the screw, producing a circular cutting or indenting edge 3.
  • a ter the pad has been placed in position the lips of the socket A are closed in, the pad being thereby retained in position and while free to rotate only about the axis of the set screw is prevented from moving endwise to any appreciable extent.
  • the seating may be a plane fiat surface, for example, it may be concave or formed to present an annular bearing surface.
  • the contact portion may, for example, comprise straight edges, say, parallel or intersecting.
  • a set screw having a socket at its outer end, a pad mounted in the socket, the pad comprising a body principally of spherical form, a seating of non-spherical form at its base, a contact portion of non-spherical form at its head, the depth of socket and size of pad being such that the socket extends above the centre of the spherical body of the pad, and the sides of the socket closed in to retain the pad in position, for the purposes set forth.
  • a set screw having a socket at its outer end, a pad mounted in the socket, the pad comprising a body principally of spherical form, a seating of non-spherical form at its base and a contact portion of non-spherical form at its head formed from a hardened steel ball, the depth of socket and size of pad being such that the socket extends above the centre of the spherical body of thepad, andthe sides'of the socket closed in'to retain the pad in position, for the'purposes set forth.
  • a set screw having acylindrical socket at its outer end, the axis of 'the socket be-. ing co-axial with the screw, a pad mounted in the socket, the pad comprising 'a body principally of spherical fornna flat surface seating atits base,'acontact portion of'nonspherical form at its head, 't-hedepth "of socket and the size ot the pa d being such that the socket extentls'above the centre of the spherical body'of-the padpand the lips of the-"socket closed in to retain the pad in position, for thepurposes-set forth.
  • A-set screw having a cylindrical: socket atits outer end, the axis of the socket'being oo-a-xial With-the screw, a pad'inounted in thesocket, the pad comprising "a body principally of spherical fOL ll'l, a fiat surface seating at its base, an edge contact portion at its head, the depth of socket and size of pad being such that the socket extends above the centre of the spherical body of the pad. and the lips of'the socket closed in to retain the pad in position, for the purposes set forth.
  • a set screw having a cylindrical socket at its outer end, the axis of the socket being co-axial Withthe screw, a pad mounted in the'socket, the pad comprising a bod principally of spherical form, a seating of nonspherioal form at its base and a contact portion at its head fornied from a hardened-steel ball, thedepth of socket and size of pad beingsuch that-the socket: extends above the centre of the spherical body ofthe-pad, and the lips of the socket closed into i'etaintlie pad'in position, for thepnrposes-set forth.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Description

Jan. 20, 1925 1,523,932
v A. W. DAVIES SET SCREW AND THE LIKE Filed June 18, 192:5 I
Patented Jan. 20, 1925 UNITED STATES PATENT OFFICE.
ALBERT VIILLIAM DAVIES, F GLASGOW, SCOTLAND, ASSIGNOR TO MAVOR & COULSON, LIMITED, OF GLASGOW, SCOTLAND.
SET SCREW AND THE LIKE.
Application filed June 18,
To all 20 72cm it may concern Be it known that I, ALBERT WILLIAM Davncs, a subject of the King of Great Britain and Ireland, and residing at Mile- End, Glasgow, Scotland, have invented new and useful Improvements in or Connected with Set Screws and the like, of which the following is specification.
This invention refers to set screws and the 0 like, hereinafter referred to as set screws, for use generally and particularly suitable for use under conditions where vibration, or heating (or both) occurs. F or example, for securing cutter picks in the blocks of cutter chains of coal cutting machines, and generally in substitution for the usual cupped and hardened set screw, and the invention relates to improvements in or con nected with the known type of set screw which at its outer end is provided with a pad to engage with the surface on which the screw is to be tightened, the pad being mounted in a socket formed in the outer end of the set screw from which socket the pad projects and is capable of rotation about the axis of the screw, so that when the pad is in bearing contact it does not rotate with the screw in the process of tightening.
According to this invention the pad comprises a body principally of spherical form,
a seating 0t non-spherical form at its base,
say, a flat surface portion of non-spherical form, a contact portion at its head comprising, for example, a cutting or indenting edge, say of circular form, or other form of edge or edges the depth of the socket in the outer end of the set screw and the size oi the pad being such that the sides oi? the socket extend above the centre of the spherical body of the pad and are closed in to retain the pad in position, and the form of seating and socket being such as will restrict rotational movement of the pad to rotation only about the axis of the set c5 screw.
In one method of construction a hardened steel ball may be used on which a seating of non-spherical form is formed by grinding to produce, say, a flat base and opposite the base a contact portion may be produced by grinding so as to present, say, a circuiar cutting or indenting edge. For use in conjunction with this type of pad the set screw may be formed with a cylindrical socket at its end, the axis of; the socket being co-axial 1923. Serial No. 646,071.
with the screw, the inner end of the socket presenting aplane transverse surface, and the depth of the socket and size of the pad is such that the sides of the socket project above the original centre of the ball. The pad is placed in the socket so that its fiat base rests upon the surface of the inner end of the socket and the metal at the sides is then closed in to embrace the body of the pad in such a manner that the pad is free to rotate about the axis of the set screw, but is prevented from rotating other wise or of moving endwise to any appreciable extent.
An example of a set screw according to this invention is illustrated in the accompanying drawing, the view being an elevation partly in section.
In the construction illustrated A designates a cylindrical socket formed in the end of the screw, and B the pad which is formed with a flat base 2 and at its head with a concave recess, the axis of which lies in the axis of the screw, producing a circular cutting or indenting edge 3. A ter the pad has been placed in position the lips of the socket A are closed in, the pad being thereby retained in position and while free to rotate only about the axis of the set screw is prevented from moving endwise to any appreciable extent.
It will be recognized that itis not essential for the seating to be a plane fiat surface, for example, it may be concave or formed to present an annular bearing surface. Further, the contact portion may, for example, comprise straight edges, say, parallel or intersecting.
I claim 1. A set screw having a socket at its outer end, a pad mounted in the socket, the pad comprising a body principally of spherical form, a seating of non-spherical form at its base, a contact portion of non-spherical form at its head, the depth of socket and size of pad being such that the socket extends above the centre of the spherical body of the pad, and the sides of the socket closed in to retain the pad in position, for the purposes set forth.
2. A set screw having a socket at its outer end, a pad mounted in the socket, the pad comprising a body principally of spherical form, a seating of non-spherical form at its base and a contact portion of non-spherical form at its head formed from a hardened steel ball, the depth of socket and size of pad being such that the socket extends above the centre of the spherical body of thepad, andthe sides'of the socket closed in'to retain the pad in position, for the'purposes set forth. I r
3. A set screw having acylindrical socket at its outer end, the axis of 'the socket be-. ing co-axial with the screw, a pad mounted in the socket, the pad comprising 'a body principally of spherical fornna flat surface seating atits base,'acontact portion of'nonspherical form at its head, 't-hedepth "of socket and the size ot the pa d being such that the socket extentls'above the centre of the spherical body'of-the padpand the lips of the-"socket closed in to retain the pad in position, for thepurposes-set forth.
4; I A-set screw having a cylindrical: socket atits outer end, the axis of the socket'being oo-a-xial With-the screw, a pad'inounted in thesocket, the pad comprising "a body principally of spherical fOL ll'l, a fiat surface seating at its base, an edge contact portion at its head, the depth of socket and size of pad being such that the socket extends above the centre of the spherical body of the pad. and the lips of'the socket closed in to retain the pad in position, for the purposes set forth.
5. A set screw having a cylindrical socket at its outer end, the axis of the socket being co-axial Withthe screw, a pad mounted in the'socket, the pad comprising a bod principally of spherical form, a seating of nonspherioal form at its base and a contact portion at its head fornied from a hardened-steel ball, thedepth of socket and size of pad beingsuch that-the socket: extends above the centre of the spherical body ofthe-pad, and the lips of the socket closed into i'etaintlie pad'in position, for thepnrposes-set forth.
ALBERT WlLIJIAh I DAVIES.
US646071A 1922-06-29 1923-06-18 Set screw and the like Expired - Lifetime US1523932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US646071A US1523932A (en) 1922-06-29 1923-06-18 Set screw and the like

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1789122A GB201008A (en) 1922-06-29 1922-06-29 Improvements in or connected with set screws and the like
US646071A US1523932A (en) 1922-06-29 1923-06-18 Set screw and the like

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585577A (en) * 1949-02-17 1952-02-12 Andreas C Nielsen Means for detachably retaining machine elements and mechanisms
US3140635A (en) * 1962-05-04 1964-07-14 Davidson Leo Richard Fastening means for faucet handle
US3467157A (en) * 1967-03-23 1969-09-16 Jack La Torre Fastener having interference thread forming means associated therewith
US3920060A (en) * 1973-07-11 1975-11-18 Veeder Industries Inc Cup-point fastener
US4055385A (en) * 1975-11-17 1977-10-25 Bjors Nils G Work piece clamp arrangements
US4083415A (en) * 1975-12-18 1978-04-11 Kennametal Inc. Mining bit with replaceable work engaging member
US20030185648A1 (en) * 2002-03-28 2003-10-02 Blaess Donald J. Set screw with rotating point
US20050191151A1 (en) * 2004-03-01 2005-09-01 Doug Gethmann Anti-rotation apparatus for use with threaded components
US20060180201A1 (en) * 2001-01-16 2006-08-17 Evans Griffith S Piston-activated valve and methods and apparatus for restraining free play in a device
US20100015824A1 (en) * 2008-07-21 2010-01-21 Hon Hai Precision Industry Co., Ltd. Electrical card connector
US20100112873A1 (en) * 2008-07-25 2010-05-06 Stauch Ing Gert Clamping screw
US20100131015A1 (en) * 2008-11-21 2010-05-27 Eugeniusz Kozak Spring-loaded kinematic adjustment screw
US20130340270A1 (en) * 2012-06-20 2013-12-26 Mark L. Silberberg Bubble Level
US20140007439A1 (en) * 2012-06-20 2014-01-09 Mark L. Silberberg Bubble Level
US20150308820A1 (en) * 2013-06-24 2015-10-29 Mark L. Silberberg Bubble Level

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585577A (en) * 1949-02-17 1952-02-12 Andreas C Nielsen Means for detachably retaining machine elements and mechanisms
US3140635A (en) * 1962-05-04 1964-07-14 Davidson Leo Richard Fastening means for faucet handle
US3467157A (en) * 1967-03-23 1969-09-16 Jack La Torre Fastener having interference thread forming means associated therewith
US3920060A (en) * 1973-07-11 1975-11-18 Veeder Industries Inc Cup-point fastener
US4055385A (en) * 1975-11-17 1977-10-25 Bjors Nils G Work piece clamp arrangements
US4083415A (en) * 1975-12-18 1978-04-11 Kennametal Inc. Mining bit with replaceable work engaging member
US20060180201A1 (en) * 2001-01-16 2006-08-17 Evans Griffith S Piston-activated valve and methods and apparatus for restraining free play in a device
US20030185648A1 (en) * 2002-03-28 2003-10-02 Blaess Donald J. Set screw with rotating point
US20050191151A1 (en) * 2004-03-01 2005-09-01 Doug Gethmann Anti-rotation apparatus for use with threaded components
US20100015824A1 (en) * 2008-07-21 2010-01-21 Hon Hai Precision Industry Co., Ltd. Electrical card connector
US20100112873A1 (en) * 2008-07-25 2010-05-06 Stauch Ing Gert Clamping screw
US8079884B2 (en) * 2008-07-25 2011-12-20 Nexans Clamping screw
US20100131015A1 (en) * 2008-11-21 2010-05-27 Eugeniusz Kozak Spring-loaded kinematic adjustment screw
US8235636B2 (en) * 2008-11-21 2012-08-07 Eugeniusz Kozak Spring-loaded kinematic adjustment screw
US20130340270A1 (en) * 2012-06-20 2013-12-26 Mark L. Silberberg Bubble Level
US20140007439A1 (en) * 2012-06-20 2014-01-09 Mark L. Silberberg Bubble Level
US9021710B2 (en) * 2012-06-20 2015-05-05 Mark L. Silberberg Bubble level
US9243907B2 (en) * 2012-06-20 2016-01-26 Mark L Silberberg Bubble level
US20150308820A1 (en) * 2013-06-24 2015-10-29 Mark L. Silberberg Bubble Level

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