US1082945A - Safety set-screw. - Google Patents

Safety set-screw. Download PDF

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Publication number
US1082945A
US1082945A US1911629226A US1082945A US 1082945 A US1082945 A US 1082945A US 1911629226 A US1911629226 A US 1911629226A US 1082945 A US1082945 A US 1082945A
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US
Grant status
Grant
Patent type
Prior art keywords
screw
wrench
socket
safety set
safety
Prior art date
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
Inventor
James H Graham
Original Assignee
Standard Company
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Grant date

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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
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B35/00Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041Specially-shaped shafts
    • F16B35/042Specially-shaped shafts for retention or rotation by a tool, e.g. of polygonal cross-section
    • 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
    • Y10S411/91Antitamper means
    • 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
    • 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
    • Y10T403/00Joints and connections
    • Y10T403/70Interfitted members
    • Y10T403/7041Interfitted members including set screw

Description

Patented Dec. 30, 1913.

I I irn srArns Para T @FFTQE.

JAMES H. GRAHAM, OF TORRINGTON, CONNECTICUT, ASSIGNOR TO THE STANDARD COMPANY, OF TORRINGTON, CONNECTICUT,

A CORPORATION OF MAINE.

SAFETY SET-SCREW.

Specification of Letters Patent.

Patented Dec. 30, 1913..

To all whom it may concern:

Be it known that I, JAMES H. GRAHAM, a citizen of the United States, residing at Torrington, in the county of Litchfield, State of Connecticut, have invented certain new and useful Improvements in Safety Set- Screws, of which the following is a description, reference being had to the accompanying drawing and to the letters and figures of reference marked thereon.

My invention relates to improvements in so-called safety setscrews, which are embedded screws used for example to hold collars and pulleys on shafts and the like, leaving no projection and allowing convenient removal whenever it is desired to do so. The invention is in a sense designed as an improvement on the safety set screw shown in Patent No. 869,086, issued October 22d, 1907, to Clemence E. Hoffman, and consists of novel features and combinations of the same, all as hereinafter described and referred to in the appended claim.

The invention is illustrated in the accompanying drawings, in which,

Figure 1 is a sectional side elevation of my invention as applied for fastening a collar on a shaft; Fig. 2 is a sectional view of the set screw showing three different forms of the point, viz., cupped, fiat and oval; Fig. 3 is a detail View of the wrench; and Fig. 4 is a sectional View like Fig. 1, showing the wrench applied to the safety set screw.

In these drawings, the safety set screw itself is illustrated by 1. It has an external screw thread 2, and is formed with a socket having two internal screw threads running in opposite directions. While the set screw may have a longitudinal opening extending entirely through it instead of the socket, the latter form is preferable, and the lower end of said socket, or end adjacent where the-end of the wrench comes, is cupped, as shown at 3, in effect forming a shoulder or seat 4, so that only a minimum frictional contact of shown at 7, s0

the seat in the the inner end of end of the socket takes place, thus preventing interlocking of the wrench with the set screw. By this arrangement, no matter how great a strain is applied to the wrench to manipulate the safety set screw in or out, very slight pressure only is necessary to release the wrench from the screw. The wrench is illustrated by 4:, and comprises the squared central portion 5, adapted for the ready attachment of a wrench or other tool, its end portions Gbeing threaded reversely to each other and of a pitch corresponding to the pitch of the internal screw threads of the socket, which pitch is greater than that of the external thread 2. The outer ends of the wrench are rounded, as as to minimize the frictional the ends of the wrench with socket.

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

The combination of a safety set screw provided with an external screw thread and a socket having right and left hand screw threads of greater pitch than the external screw thread and having a seat at the lower end closing said socket and forming a bear ing end for the set screw, and a wrench having a central portion for engagement of a tool and having oppositely extending portions with right and left hand threads, respectively, for engagement with the internal screw threads of the socket, said extending portions being of sufficient length to permit the ends thereof to engage the closed end of the socket.

In testimony whereof I affix my signature. in presence of two witnesses.

JAMES H. GRAHAM.

engagement of Vitnesses:

E. J. MILLs, W. C. Rown.

the wrench with the inner

US1082945A 1911-05-24 1911-05-24 Safety set-screw. Expired - Lifetime US1082945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1082945A US1082945A (en) 1911-05-24 1911-05-24 Safety set-screw.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1082945A US1082945A (en) 1911-05-24 1911-05-24 Safety set-screw.

Publications (1)

Publication Number Publication Date
US1082945A true US1082945A (en) 1913-12-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
US1082945A Expired - Lifetime US1082945A (en) 1911-05-24 1911-05-24 Safety set-screw.

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US (1) US1082945A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771262A (en) * 1954-12-15 1956-11-20 Faries Mfg Co Combination of threaded bolt and deformable bushing for supporting frangible plate on a wall
US4579531A (en) * 1983-01-20 1986-04-01 Precision Dental Products Limited Dental repair apparatus having a dental anchoring device
DE3921874A1 (en) * 1989-07-04 1989-11-30 Hoehler Juergen Dipl Volksw Screw with a countersunk recess in the head, a right-handed and a left-handed thread being located on the inner wall of said recess. Screwdriver with complementary threads on the outer border of the part which is screwed into the countersunk recess in order to screw in, and unscrew, the screw
WO1996022471A1 (en) * 1995-01-19 1996-07-25 Peter Melott Simonson Threaded fastener with torque calibrating mechanism
US5857816A (en) * 1994-10-17 1999-01-12 Anglo Dutch International Finance N.V. Torque-limiting fastening device
US6361258B1 (en) * 2000-07-06 2002-03-26 Gary V. Heesch Permanently placeable fasteners, inserter head for fastener placement and related methods
US20050191151A1 (en) * 2004-03-01 2005-09-01 Doug Gethmann Anti-rotation apparatus for use with threaded components
WO2006065213A1 (en) * 2004-12-14 2006-06-22 Fadi El-Homsi Dental implant retaining screw and method for mounting an abutment on said implant
US20090324360A1 (en) * 2008-06-25 2009-12-31 Andrea Schuech Connecting member
US20100049193A1 (en) * 2008-08-19 2010-02-25 Mark Huseman Insulated Tube for Suction Coagulator
US20120197254A1 (en) * 2008-06-24 2012-08-02 Scott Wolfe Intramedullary Fixation Assembly and Method of Use
US20160245321A1 (en) * 2014-08-22 2016-08-25 Shenzhen China Star Optoelectronics Technology Co., Ltd. Screw threaded fastening component

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771262A (en) * 1954-12-15 1956-11-20 Faries Mfg Co Combination of threaded bolt and deformable bushing for supporting frangible plate on a wall
US4579531A (en) * 1983-01-20 1986-04-01 Precision Dental Products Limited Dental repair apparatus having a dental anchoring device
DE3921874A1 (en) * 1989-07-04 1989-11-30 Hoehler Juergen Dipl Volksw Screw with a countersunk recess in the head, a right-handed and a left-handed thread being located on the inner wall of said recess. Screwdriver with complementary threads on the outer border of the part which is screwed into the countersunk recess in order to screw in, and unscrew, the screw
US5857816A (en) * 1994-10-17 1999-01-12 Anglo Dutch International Finance N.V. Torque-limiting fastening device
WO1996022471A1 (en) * 1995-01-19 1996-07-25 Peter Melott Simonson Threaded fastener with torque calibrating mechanism
US5681135A (en) * 1995-01-19 1997-10-28 Simonson; Peter Melott Threaded fastener with multi-stage torque limiting applicator
US6361258B1 (en) * 2000-07-06 2002-03-26 Gary V. Heesch Permanently placeable fasteners, inserter head for fastener placement and related methods
WO2003060332A2 (en) * 2000-07-06 2003-07-24 Heesch Gary V Permanently placeable fasteners, inserters head for fastener placement and related methods
WO2003060332A3 (en) * 2000-07-06 2004-08-05 Gary V Heesch Permanently placeable fasteners, inserters head for fastener placement and related methods
US20050191151A1 (en) * 2004-03-01 2005-09-01 Doug Gethmann Anti-rotation apparatus for use with threaded components
WO2006065213A1 (en) * 2004-12-14 2006-06-22 Fadi El-Homsi Dental implant retaining screw and method for mounting an abutment on said implant
US20120197254A1 (en) * 2008-06-24 2012-08-02 Scott Wolfe Intramedullary Fixation Assembly and Method of Use
US9289220B2 (en) * 2008-06-24 2016-03-22 Extremity Medical Llc Intramedullary fixation assembly and method of use
US20090324360A1 (en) * 2008-06-25 2009-12-31 Andrea Schuech Connecting member
US8511962B2 (en) * 2008-06-25 2013-08-20 Trw Automotive Gmbh Connecting member
US20100049193A1 (en) * 2008-08-19 2010-02-25 Mark Huseman Insulated Tube for Suction Coagulator
US20160245321A1 (en) * 2014-08-22 2016-08-25 Shenzhen China Star Optoelectronics Technology Co., Ltd. Screw threaded fastening component
US9618025B2 (en) * 2014-08-22 2017-04-11 Shenzhen China Star Optoelectronics Technology Co., Ltd Screw threaded fastening component

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