US987381A - Expansion-bolt. - Google Patents

Expansion-bolt. Download PDF

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Publication number
US987381A
US987381A US60026110A US1910600261A US987381A US 987381 A US987381 A US 987381A US 60026110 A US60026110 A US 60026110A US 1910600261 A US1910600261 A US 1910600261A US 987381 A US987381 A US 987381A
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Prior art keywords
bolt
shell
shells
expansion
recess
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Expired - Lifetime
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US60026110A
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Albert Law
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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
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/08—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation
    • F16B13/0816—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation with a wedging drive-pin

Definitions

  • This invention relates to expansion bolts of the kind whereby a bolt can be locked in a recess formed in a wall; the device is designed with as few parts as possible and gives positive grip in the recess.
  • the device consists of two tubular shells, one of the shells being ⁇ interiorly threaded while the other has a smooth bore; the threaded shell is adapted when the bolt is operated to move in a rectilinear path on the bolt.
  • the two shells have inclined wedge shaped faces the threaded shell when moving along the bolt also moves along the inclined face of the abutting shell and thus expands the shells to give firm grip on the interior of the recess.
  • the smooth bored shell is provided with a toe formed integral with the shell to engage thelower end of the bolt and thus prevent the shell when the bolt is operated from moving toward the head of the bolt.
  • Figure 1 represents a side elevation of an expansion bolt embodying this invention.
  • Fig. 2 is a vertical longitudinal section thereof.
  • Fig. 3 is a similar section showing the parts inserted in a recess.
  • Fig. 4 is a section along line ai .fr Fig. 3.
  • Fig. 5 is a vcrtical Section showing the parts in a different position from Fig. 3.
  • Fig. 6 is a section along line y y Fig. 5.
  • the letter a designates a tubular shell which has a smooth bore and is provided with a toe b formed integral with the tube.
  • the said shell has inclined wedge shaped walls o and a shoulder d to form a double incline along the length of the shell.
  • a shell e having an internal screw thread f and provided with wedge shaped walls g to correspond to the walls of the said tube a.
  • shells has a series of grooves formed in the periphery of the tubes of suitable shape to hold a packing of lead L or similar soft Aventing movement of the latter shell longitudinally along the bolt. Then in order to wedge the shells tightly into a recess the bolt is again turned and the shell c moves toward the head of the bolt while the inclined walls g move along the correspond-ing walls c thus moving the shell a away from the axis of the bolt thus wedging the shells in the said recess and locking the bolt in the snelle.
  • a device of the kind described comprising two tubular shells having corresponding wedge faced walls, one of the shells having a screw thread formed in the interior of the shell, the other shell having a smooth bore and provided with an integral toe portion, a bolt to engage the threaded interior of the shell while the lower end of the bolt is adapted to coact with the toe portion of the smooth bored shell and prevent longitudinal movement of the,4 shell, said bolt when operated being adapted to move the threaded shell in a rectilinear path lon itudinally along the bolt and wedge the she ls in the recess.
  • a device of the kind described comprising twb tubular shells having corresponding wedge faced walls, one of the shells having a screw thread formed in the interior of the shell, the other shell having a smooth bore and provided with an integral toe portion, a series of grooves formed in the periphery of the shells to hold packing material, a bolt to engage the threaded in- ⁇ terior of the shell while the lower end of the bolt is adapted to Gonot with the toe por- In testimony Vwhereof I have hereunto set tion of the Smooth bored shell and pi'event my hand 111 the pi'esenee of two Subscribing longitudinal movement of the Shell said WltIlGSSS- bolt when operated beingadapted to move ALBERT LAW. the threaded shell in a rectilinear path lonl/Vitnesses:

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medicinal Preparation (AREA)

Description

A. LAW.
l EXPANSION BOLT. APPLIOATIOI FILED DEO. 31, 1910.
Patented 111111521, 1911.
JqZ Berl' law 559111! Y* l a* Ml ALBERT LAW, OF BROOKLYN, NEW YORK.
EXPANSION-BOLT.
Specification of Letters Patent.
Patented Mar. 21, 1911.
Application filed December 3l, 1910. Serial No. 600,261.
To all whom it may concern.'
Be it known that I, ALBERT Law, a citizen of the United States, residing at Brooklyn, county of Kings, State of New York, have invented new and useful improvements in Expansion-Bolts, of which the following is a specification.
This invention relates to expansion bolts of the kind whereby a bolt can be locked in a recess formed in a wall; the device is designed with as few parts as possible and gives positive grip in the recess.
The device consists of two tubular shells, one of the shells being` interiorly threaded while the other has a smooth bore; the threaded shell is adapted when the bolt is operated to move in a rectilinear path on the bolt.
The two shells have inclined wedge shaped faces the threaded shell when moving along the bolt also moves along the inclined face of the abutting shell and thus expands the shells to give firm grip on the interior of the recess. The smooth bored shell is provided with a toe formed integral with the shell to engage thelower end of the bolt and thus prevent the shell when the bolt is operated from moving toward the head of the bolt.
The novel features of the invent-ion are more fully described in the following specification and claims and illustrated in the ac companying drawing in which:
Figure 1 represents a side elevation of an expansion bolt embodying this invention. Fig. 2 is a vertical longitudinal section thereof. Fig. 3 is a similar section showing the parts inserted in a recess. Fig. 4 is a section along line ai .fr Fig. 3. Fig. 5 is a vcrtical Section showing the parts in a different position from Fig. 3. Fig. 6 is a section along line y y Fig. 5.
In this drawing the letter a designates a tubular shell which has a smooth bore and is provided with a toe b formed integral with the tube. The said shell has inclined wedge shaped walls o and a shoulder d to form a double incline along the length of the shell. Coacting with this shell is a shell e having an internal screw thread f and provided with wedge shaped walls g to correspond to the walls of the said tube a. Each ofthe.
shells has a series of grooves formed in the periphery of the tubes of suitable shape to hold a packing of lead L or similar soft Aventing movement of the latter shell longitudinally along the bolt. Then in order to wedge the shells tightly into a recess the bolt is again turned and the shell c moves toward the head of the bolt while the inclined walls g move along the correspond-ing walls c thus moving the shell a away from the axis of the bolt thus wedging the shells in the said recess and locking the bolt in the snelle.
ill parts of the device are accessible and the said parts can be readily galvanized without marring or injuring the screw threads.
l claim:
1. A device of the kind described, comprising two tubular shells having corresponding wedge faced walls, one of the shells having a screw thread formed in the interior of the shell, the other shell having a smooth bore and provided with an integral toe portion, a bolt to engage the threaded interior of the shell while the lower end of the bolt is adapted to coact with the toe portion of the smooth bored shell and prevent longitudinal movement of the,4 shell, said bolt when operated being adapted to move the threaded shell in a rectilinear path lon itudinally along the bolt and wedge the she ls in the recess.
2. A device of the kind described, comprising twb tubular shells having corresponding wedge faced walls, one of the shells having a screw thread formed in the interior of the shell, the other shell having a smooth bore and provided with an integral toe portion, a series of grooves formed in the periphery of the shells to hold packing material, a bolt to engage the threaded in-` terior of the shell while the lower end of the bolt is adapted to Gonot with the toe por- In testimony Vwhereof I have hereunto set tion of the Smooth bored shell and pi'event my hand 111 the pi'esenee of two Subscribing longitudinal movement of the Shell said WltIlGSSS- bolt when operated beingadapted to move ALBERT LAW. the threaded shell in a rectilinear path lonl/Vitnesses:
gitudinally along the bolt and Wedge the HENRY HERZ,
shells in the recess. CHIGSTIAN H. CLINSTAEDT.
Copies of this patent may be obtained for fv cents each, by addressing the Commissioner of Patents, Washington, D. C.
US60026110A 1910-12-31 1910-12-31 Expansion-bolt. Expired - Lifetime US987381A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769990A (en) * 1953-06-15 1956-11-13 Ruben L Pawsat Wedge nut forging machine
US2966968A (en) * 1956-06-13 1961-01-03 Mccrosky Tool Corp Locking devices
US3273444A (en) * 1964-03-06 1966-09-20 Dow Chemical Co Expandable dowel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769990A (en) * 1953-06-15 1956-11-13 Ruben L Pawsat Wedge nut forging machine
US2966968A (en) * 1956-06-13 1961-01-03 Mccrosky Tool Corp Locking devices
US3273444A (en) * 1964-03-06 1966-09-20 Dow Chemical Co Expandable dowel

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