US452640A - Bolt having slotted head - Google Patents

Bolt having slotted head Download PDF

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US452640A
US452640A US452640DA US452640A US 452640 A US452640 A US 452640A US 452640D A US452640D A US 452640DA US 452640 A US452640 A US 452640A
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Prior art keywords
bolt
nut
head
slotted head
shoulder
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    • 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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/003—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool star-shaped or multi-lobular, e.g. Torx-type, twelve-point star

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  • My improvement consists in the introduction of aslot in the head of a bolt; and it pertains, principally, to that class of bolts which are provided with a square shoulder immediately beneath the head, and also with a nut upon the threaded end thereof.
  • Said bolts are variously designated as forelock, stop, tire, assembling, 850., these embracing the cone-headed elliptic rhomb with other common forms.
  • the object of my improvement is to facilitate the removal of such bolts from their position by the intervention of the screw-driver to prevent their rotation when removing or tightening the nuts in instances where the wood or other material surrounding the square shoulder on the body of the bolt has become worn to a degree that it offers no resistance to the abutting sides; or, as frequently occurs, said shoulder may be worn to an extent that its efficiency as a factor to secure the bolt from turning in its socket is impaired.
  • the application of the screw-driver or any similar implement will hold the bolt in position until its nut is removed or secured.
  • Figure 1 illustrates the most common form of a shouldered bolt and nut with my improved slotted head.
  • Fig. 2 indicates a top plan thereof.
  • Fig. 3 shows a modified construction of the head, wherein two or more recesses are made to receive a spanner
  • A designates the body of the bolt, the threaded portion of which is at B, retaining the nut O.
  • the shoulder appears at D, immediately under the head-E, which is slotted, as appears at F, for the reception of a screw-driver, or may be pierced or recessed to receive a spanner, as at G.
  • Fig. 4 I depict a common form of jointbolt, whereonthe shoulder D is omitted, which, however, is susceptible to my improvement, (seen at R) which facilitates the tightening of the nut C after the thread has ontered therein.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Tires In General (AREA)
  • Heat Treatment Of Articles (AREA)

Description

Nd'MoaeL P. A. GERRY. BOLT HAVING SLOTTED HEAD, SQUARED NEGK, THREADED SHARK,
AND SGREW NUT.
No. 452,640. Patented May 19, 1891 a) gar-v UNITED STATES PATENT OFFICE.
PERLEY A. GERRY, OF LAVVRENOE, MASSACHUSETTS.
BOLT HAVING SLOTTED HEAD, SQUARED NECK, THREADED SHANK, AND SCREW-NUT.
SPECIFICATION forming part of Letters Patent No. 452,640, dated May 19, 1891.
Application filed February 6, 1891. Serial No. 380.537. (N0 model.)
To all whom it may concern.-
Be it known that I, PERLEY A. GERRY, a citizen of the United States, residing in Lawrence, in the county of Essex and State of Massachusetts, have invented an Improved Bolt, of which the followingisaspecitication.
My improvement consists in the introduction of aslot in the head of a bolt; and it pertains, principally, to that class of bolts which are provided with a square shoulder immediately beneath the head, and also witha nut upon the threaded end thereof. Said bolts are variously designated as forelock, stop, tire, assembling, 850., these embracing the cone-headed elliptic rhomb with other common forms.
The object of my improvement is to facilitate the removal of such bolts from their position by the intervention of the screw-driver to prevent their rotation when removing or tightening the nuts in instances where the wood or other material surrounding the square shoulder on the body of the bolt has become worn to a degree that it offers no resistance to the abutting sides; or, as frequently occurs, said shoulder may be worn to an extent that its efficiency as a factor to secure the bolt from turning in its socket is impaired. In these instances the application of the screw-driver or any similar implement will hold the bolt in position until its nut is removed or secured. I consider, therefore, that these features-i. e., the slot and shoulder-cooperate to produce a new result which cannot be accomplished with the presentconstruction of said class of bolts in such instances as I have previously enumerated.
In the drawings forming a part of this specification, Figure 1 illustrates the most common form of a shouldered bolt and nut with my improved slotted head. Fig. 2 indicates a top plan thereof. Fig. 3 showsa modified construction of the head, wherein two or more recesses are made to receive a spanner Referring to the drawings, A designates the body of the bolt, the threaded portion of which is at B, retaining the nut O. The shoulder appears at D, immediately under the head-E, which is slotted, as appears at F, for the reception of a screw-driver, or may be pierced or recessed to receive a spanner, as at G.
In Fig. 4 I depict a common form of jointbolt, whereonthe shoulder D is omitted, which, however, is susceptible to my improvement, (seen at R) which facilitates the tightening of the nut C after the thread has ontered therein.
Having thus described my invention, I claim as new, and desire to secure by Letters Patent of the United States- 1. In a bolt and nut, the combination of the slotted head thereof with the shoulder forming an integral part of the body of said bolt, substantially in the manner and for the purpose specified.
2. In a bolt provided with'a thread and nut, the abutting shoulder D, in combination with a head E, provided with a slot F or recesses G, adapted to receive an implement to immovably secure said bolt in'the operation of removing or securing said nut, as herein set forth. J
In testimony whereof I have signed my name to this specificatiomin the presence of two subscribing witnesses, on this 27th day of January,A. D. 1891.
PERLEY A. GERRY.
Witnesses:
NEWTON P. FRYE, GEORGE N. HUTOHINS.
US452640D Bolt having slotted head Expired - Lifetime US452640A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466546A (en) * 1943-02-03 1949-04-05 Scovill Manufacturing Co Threaded insert
USD270229S (en) 1980-10-22 1983-08-23 The Eastern Company Tool and operator head for tool-operated lock
USD270424S (en) 1980-10-22 1983-09-06 The Eastern Company Tool operator for tool-operated locks
US6113330A (en) * 1994-07-30 2000-09-05 Lindauer Dornier Gesellschaft Mbh Screw connection especially for a heald shaft connecting rod in a loom
US6394723B1 (en) * 2000-10-12 2002-05-28 Donald Cassel Fastener with substrate-engaging portions
US6430756B1 (en) * 1998-12-28 2002-08-13 George W. Reilly Closet bolt
US6626627B2 (en) * 1997-03-26 2003-09-30 Sfs Industrie Holding Ag Screw with tamper-proof head
US20030223841A1 (en) * 2002-05-31 2003-12-04 Voith Paper Patent Gmbh Process for the releasable attachment of wearing parts in devices for treating suspended fiber stock
US20050053445A1 (en) * 2003-09-04 2005-03-10 Mack Trucks, Inc. Self-securing fastener
US9080586B2 (en) * 2012-11-20 2015-07-14 Min-Sheng Liu D-type screwing assembly for furniture

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466546A (en) * 1943-02-03 1949-04-05 Scovill Manufacturing Co Threaded insert
USD270229S (en) 1980-10-22 1983-08-23 The Eastern Company Tool and operator head for tool-operated lock
USD270424S (en) 1980-10-22 1983-09-06 The Eastern Company Tool operator for tool-operated locks
US6113330A (en) * 1994-07-30 2000-09-05 Lindauer Dornier Gesellschaft Mbh Screw connection especially for a heald shaft connecting rod in a loom
US6626627B2 (en) * 1997-03-26 2003-09-30 Sfs Industrie Holding Ag Screw with tamper-proof head
US6430756B1 (en) * 1998-12-28 2002-08-13 George W. Reilly Closet bolt
US6394723B1 (en) * 2000-10-12 2002-05-28 Donald Cassel Fastener with substrate-engaging portions
US20030223841A1 (en) * 2002-05-31 2003-12-04 Voith Paper Patent Gmbh Process for the releasable attachment of wearing parts in devices for treating suspended fiber stock
US20050053445A1 (en) * 2003-09-04 2005-03-10 Mack Trucks, Inc. Self-securing fastener
US9080586B2 (en) * 2012-11-20 2015-07-14 Min-Sheng Liu D-type screwing assembly for furniture

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