US1082945A - Safety set-screw. - Google Patents
Safety set-screw. Download PDFInfo
- Publication number
- US1082945A US1082945A US62922611A US1911629226A US1082945A US 1082945 A US1082945 A US 1082945A US 62922611 A US62922611 A US 62922611A US 1911629226 A US1911629226 A US 1911629226A US 1082945 A US1082945 A US 1082945A
- Authority
- US
- United States
- Prior art keywords
- screw
- wrench
- socket
- safety set
- set screw
- 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
Links
Images
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
- F16B35/04—Screw-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
- F16B35/041—Specially-shaped shafts
- F16B35/042—Specially-shaped shafts for retention or rotation by a tool, e.g. of polygonal cross-section
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
- Y10S411/91—Antitamper means
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
- Y10S411/919—Screw having driving contacts
-
- 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
Definitions
- 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.
- 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;
- Fig. 4 is a sectional View like Fig. 1, showing the wrench applied to the safety set screw.
- 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 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.
- 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
- 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.
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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US62922611A US1082945A (en) | 1911-05-24 | 1911-05-24 | Safety set-screw. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US62922611A US1082945A (en) | 1911-05-24 | 1911-05-24 | Safety set-screw. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1082945A true US1082945A (en) | 1913-12-30 |
Family
ID=3151177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US62922611A Expired - Lifetime US1082945A (en) | 1911-05-24 | 1911-05-24 | Safety set-screw. |
Country Status (1)
Country | Link |
---|---|
US (1) | US1082945A (en) |
Cited By (13)
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 |
US10260550B2 (en) * | 2015-08-26 | 2019-04-16 | Chaoyi LI | Semi-left-hand-thread-removal screw |
-
1911
- 1911-05-24 US US62922611A patent/US1082945A/en not_active Expired - Lifetime
Cited By (19)
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 |
WO2003060332A3 (en) * | 2000-07-06 | 2004-08-05 | Gary V Heesch | Permanently placeable fasteners, inserters 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 |
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 |
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 |
US10260550B2 (en) * | 2015-08-26 | 2019-04-16 | Chaoyi LI | Semi-left-hand-thread-removal screw |
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