GB440772A - Improvements relating to bolt anchors - Google Patents

Improvements relating to bolt anchors

Info

Publication number
GB440772A
GB440772A GB1231935A GB1231935A GB440772A GB 440772 A GB440772 A GB 440772A GB 1231935 A GB1231935 A GB 1231935A GB 1231935 A GB1231935 A GB 1231935A GB 440772 A GB440772 A GB 440772A
Authority
GB
United Kingdom
Prior art keywords
bolt
parts
hole
members
thread
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
Application number
GB1231935A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HENRY WILLIAM PLEISTER
Original Assignee
HENRY WILLIAM PLEISTER
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
Application filed by HENRY WILLIAM PLEISTER filed Critical HENRY WILLIAM PLEISTER
Priority to GB1231935A priority Critical patent/GB440772A/en
Publication of GB440772A publication Critical patent/GB440772A/en
Expired legal-status Critical Current

Links

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
    • 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
    • F16B13/0891—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 locking element, e.g. wedge, key or ball moving along an inclined surface of the dowel body

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)

Abstract

440,772. Bolt anchor. PLEISTER, H. W., 200, Linden Avenue, Westfield, and KARITZKY, J., Garwood, both in New Jersey, U.S.A. April 24, 1935, No. 12319. [Class 89 (i)] A bolt anchor comprises relatively slidable members one of which is screw threaded, and is formed so that when it is inserted in a hole the circumferential form of the screw member is changed to increase the effective area of contact between the latter and the bolt it has to support. A bolt anchor comprises two members 1, 2, of which the member 1 is provided with an arched top 7, parallel sides 8, and an open bottom 6 with thread 9. Its inner edges 12 are of arcuate wedge form and have wedge recesses 13. The other member 2 is provided with exterior ribs 5 and similar tapering surfaces with upstanding flanges 15 engaging the recesses 13, whereby when the two parts are assembled and driven into a hole 3 in a wall 4, the members 15 engage the slots 13 and distort the screw thread so that it is made to embrace more closely the thread of the bolt 21, and the ribs 5 on the part 2 bite into the hole. In addition the parts have respectively notches 16 and bendable projections 18 which form a temporary lock for the two parts when being driven into position. For the purpose of facilitating the deformation, the member 1 is provided with a longitudinal slot 10. The member 2 has head lugs 24 and longitudinal external ribs 30. When a tongue 19 is provided on member 1 it is adapted to slide between lugs 23 on member 2 which, when the parts are fully expanded, can be bent down to engage and lock the inserted bolt.
GB1231935A 1935-04-24 1935-04-24 Improvements relating to bolt anchors Expired GB440772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1231935A GB440772A (en) 1935-04-24 1935-04-24 Improvements relating to bolt anchors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1231935A GB440772A (en) 1935-04-24 1935-04-24 Improvements relating to bolt anchors

Publications (1)

Publication Number Publication Date
GB440772A true GB440772A (en) 1936-01-06

Family

ID=10002325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1231935A Expired GB440772A (en) 1935-04-24 1935-04-24 Improvements relating to bolt anchors

Country Status (1)

Country Link
GB (1) GB440772A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330902A1 (en) * 1975-11-07 1977-06-03 Bredal Torben Anchor bolt for use in concrete - has nut with inclined slots expanded by bearing on tapered shank portion
US4415294A (en) * 1981-08-20 1983-11-15 Thomas Ringe Support means and system for supporting mine roofs
US4523881A (en) * 1983-04-01 1985-06-18 Mine Roof Support Systems, Inc. Lateral force system and support for supporting mine roofs
US5156647A (en) * 1991-12-11 1992-10-20 Honeywell Inc. Snap-together wedgelock

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330902A1 (en) * 1975-11-07 1977-06-03 Bredal Torben Anchor bolt for use in concrete - has nut with inclined slots expanded by bearing on tapered shank portion
US4415294A (en) * 1981-08-20 1983-11-15 Thomas Ringe Support means and system for supporting mine roofs
US4523881A (en) * 1983-04-01 1985-06-18 Mine Roof Support Systems, Inc. Lateral force system and support for supporting mine roofs
US5156647A (en) * 1991-12-11 1992-10-20 Honeywell Inc. Snap-together wedgelock

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