US3771753A

US3771753A - Shore bracket

Info

Publication number: US3771753A
Application number: US00218908A
Authority: US
Inventors: J Wilbur; R Kamholtz
Original assignee: Harsco Corp
Current assignee: Enviri Corp
Priority date: 1972-01-19
Filing date: 1972-01-19
Publication date: 1973-11-13
Anticipated expiration: 1990-11-13
Also published as: CA954111A

Abstract

A shoring bracket for overhead form work has a support head engageable with a form work beam. The head is vertically adjustable for positioning of the form work. The head of the bracket includes a roller engaging the form work beam and a lock for the roller to prevent rotation thereof when the head is supporting the form work. The roller is unlocked for longitudinal rolling of the form work beam over the roller for removal of the form work.

Description

United States Patent [191 Wilbur et a1.

SHORE BRACKET Inventors: James Justin Wilbur, Closter, N.J.;

Richard Kamholtz, New York, NY. Assignee: Harsco Corporation, Wormleysburg,

Filed: Jan. 19, 1972 Appl. No.: 218,908

US. Cl 248/295, 249/18, 249/219 R Int. Cl. A47f 5/10, A47h 33/00 Field of Search 248/295, 296;

References Cited UNITED STATES PATENTS 10/1945 White 249/18 UX 2/1969 Eriksson 249/18 ail [ Nov. 13, 1973 3,504,879 4/1970 Strickland .1, 248/296 FOREIGN PATENTS OR APPLICATIONS 108,912 11/1943 Sweden 16/19 Primary Examiner-J. Franklin Foss Attorney-William B. Kerkam, Jr. et a1.

[57] ABSTRACT 9 Claims, 3 Drawing Figures PAIENTEMuHmn 3771.753

SHEET 1 BF 2 FIG. I

PAIENTEUNIJY 131m SL771; 753

FIG.2

FIG. 3

SECTION A-A' SHORE BRACKET BACKGROUND OF THE INVENTION The present invention relates to support brackets for shoring for form work and more particularly relates to a bracket mounted on a column for vertically adjustable support of the form work. A roller head is released for removal of the form work.

A column shore bracket as disclosed in U.S. Pat. No. 3,504,879 and the several patents cited during the prosecution thereof are considered to be the most pertinent prior art in this field. The shore bracket of the patent aforesaid has a plate support for the beam of the form work and when this support is lowered the beam comes into engagement with a roller forremoval of the beam and form work.

The present invention has a less complicated and less expensive construction to manufacture and use while providing secure support for the beam of the form work by locking the roller headagainst rotation and yet permitting easy removal of the beam and form work by unlocking the roller and freeing it for rotation for removal of the supported beam.

SUMMARY OF THE INVENTION The shore bracket of the present invention comprises a base secured to a vertical column by suitable bolts or other securing means and this base has vertically mounted thereon a tubular housing in which a threaded shaft is mounted for vertical movement. A nut is mounted on the threaded shaft and engages the top of the tubular member. A roller bracket is mounted at the top of the threaded shaft and a roller is mounted for rotation in the bracket. A lock for the roller is also mounted in the bracket and is moved into and out of engagement with the roller by suitable means such as a threaded bolt or the like. The roller bracket may also.

include a vertically extending member to act as a stop for the adjacent beam of the form work whenthe beam is resting on the roller.

' BRIEF DESGRIPTION'OFTHE RAWIN S A preferred embodiment of the present invention isshownin the accompanying drawings, intwhich like reference characters indicate like parts. In these drawings, FIG. 1 is a view of a preferred embodiment of the present invention in beam supporting position mounted on a vertical column;

FIG. 2 is a partial view of the embodiment of FIG. 1

showing the construction for locking the roller of the head of the bracket against rotation; and

FIG. 3 is a partial sectional view of the embodiment of FIG. 1 on the line A-A thereof.

DESCRIPTION'OF THE PREFERRED EMBODIMENT With reference now to the drawings, a'preferred embodiment of the .shore bracket of the present invention utilizes a vertical column .10 to which a base 11 for the bracket is suitably secured by. bolts '12. A hollow tubular housing 13 is secured vertically in base 11 as by welds l4 and threaded shaft 15 is slidably'mounted therein. Nut 16 is mounted on the threads of shaft 15 shaft 15 from'rotating on actuation of nut 16 permitting shaft 15 to slide vertically in tubular housing 13. Shaft 15 is notched at its upper end to engage rod 22. A head 21 is mounted on the upper end of threaded shaft 15 and is aligned for direction and prevented from rotating on shaft 15 by the engagement of notches in shaft 15 with rod 22. Rod 22 is secured on each end by welds to head 21. A plate 23 is secured across the top of cap 21 by welds 24 and spaced

uprights

25 and 26 are secured to plate 23 by

welds

27 and 28, respectively.

Cross bars

29 and 30 are secured across

uprights

25 and 26 and-a flange 31 is secured across

bars

29 and 30 adjacent column 10.

Uprights

25 and 26 are suitably bored to receive a shaft 32 which is locked in position by set

screws

33 and 34 and a roller 35 is mounted for rotation on shaft 32.

which bears against cross member 30. Rotation of threaded bolt 37 moves wedge 36 into and out of engagement with roller 35 and when in engagement with roller 35 prevents roller 35 from rotating as well as supporting a part of the load applied upon said roller.

In use, base 11 is bolted to column 10 adjacent the position for the form work and nut 16 is rotated in the appropriate direction to position roller 35 adjacent the position of the form work. With wedge 36' in position to -lock roller 35 against rotation, a beam 41 for the form work is mounted on roller 35 and is'spa'ced from column 10 by bracket 31. Beam 41 is then suitably plumbed or positioned by appropriate rotation of nut 16, it being understood that beam 41 will extend over and be supported by a plurality of the shore brackets and the form work will then be completed. After completion of the form'work, concreteis poured and permitted to harden." r

When the form work is to be removed, nut 16 is appropriately rotated to allow shaft 15 and roller 35 to drop and the lowered form work-frees itselffrom the hardened concrete. Thereafter, bolt 37 is suitably actuated to withdraw wedge 36 from engagement with r01 ler 35 and beam 41 and adjacent portions of the form work may then be withdrawn laterally and away from the) hardened concrete over roller- 35 for reuse elsewhere.

The shore brackets are then removed and reused for form work support elsewhere in the building being constructed.

Changes in or modifications to the above-described preferred embodiment of the present invention may now be suggested without departing from the present inventive concept. Reference should therefore be had to the appended claims to determine the scope of this invention.

What I claim is:

l. A shore bracket for supporting form work used in concrete construction for vertical mounting on columns or walls comprising a base secured vertically to the column, a hollow tubular housing mounted vertically on said base, a non-rotating threaded shaft slidably mounted in said housing, a threaded nut mounted on said shaft and engaging the upper end of said housing, a roller for engaging the form work mounted on the upper end of said shaft vertically above said nut and means for locking said roller against rotation.

2. A shore bracket for supporting form work used in concrete construction for vertical mounting on columns or walls comprising a base secured vertically to the column, a hollow tubular housing mounted vertically on said base, a non-rotating threaded shaft slidably mounted in said housing, a threaded nut mounted on said shaft and engaging the upper end of said housing, a roller for engaging the form work mounted on the upper end of said shaft vertically above said nut and means for locking said roller against rotation, said locking means including a wedge movable into engagement with said roller and manually actuable screw means for moving said wedge.

3. A shore bracket for supporting form work used in concrete construction for vertical mounting on columns or walls comprising a base secured vertically to the column, a hollow tubular housing mounted vertically on said base, a non-rotating threaded shaft slidably mounted in said housing, a threaded nut mounted on said shaft and engaging the upper end of said housing, a roller for engaging the form work mounted on the upper end of said shaft vertically above said nut and means for locking said roller against rotation, including a head mounted on said shaft, spaced uprights on said head, said roller being mounted between said uprights and a wedge for locking said roller against rotation mounted on said head between said uprights.

4. A bracket as described in claim 3, including a flange secured to said head and spaced from said roller for engagement by a portion of the form work supported by said roller.

5. A bracket as described in claim 3, including a manually actuable screw carried by said head and moving said wedge carried by said head into and out of engage ment with said roller.

6. A shore bracket for supporting form work used in concrete construction for vertical mounting on columns or walls comprising a base secured vertically to the column, a hollow tubular housing mounted vertically on said base, a non-rotating threaded shaft slidably mounted in said housing, a threaded nut mounted on said shaft and engaging the upper end of said housing, a roller for engaging the form work mounted on the upper end of said shaft vertically above said nut and means for locking said roller against rotation, including a key mounted in said housing and a longitudinal slot in said shaft receiving said key whereby rotation-of said shaft in said housing is prevented.

7.' A shore'bracket for supporting form work used in concrete construction for vertical mounting on columns or walls comprising a base secured vertically to the column, a hollow tubular housing mounted vertically on said base, a non-rotating threaded shaft slidably mounted in said housing, a threaded nut mounted on said shaft and engaging the upper end of said housing, a roller for engaging the form work mounted on the upper end of said shaft vertically above said nut and means for locking said roller against rotation, including a head mounted in said shaft and notches in upper end of said threaded shaft engaging a rod welded in said head whereby said roller is positively aligned for direction in relation to form work.

8. A shore bracket for supporting form work used in concrete construction for vertical mounting on columns or walls comprising a base secured vertically to the column, a hollow tubular housing mounted vertically on said base, a non-rotating threaded shaft slidably mounted in said housing, a threaded nut mounted on said shaft and engaging the upper end of said housing, a roller for engaging the form work mounted on the upper end of said shaft vertically above said nut and means for locking said roller against rotation, including a head mounted on said shaft and notches in the upper end of said threaded shaft engaging a rod welded in the head of said bracket whereby rotation of said head on said threaded shaft is prevented.

9. A shore bracket for supporting form work used in concrete construction for vertical mounting on columns or walls comprising a base secured vertically to the column, a hollow tubular housing mounted vertically on said base, a non-rotating threaded shaft slidably mounted in said housing, a threaded nut mounted on said shaft and engaging the upper end of said housing, a roller for engaging the form work mounted on the upper end of said shaft vertically above said nut and means for locking said roller against rotation, said locking means including a wedge movable into engagement with and on the under side of said roller whereby said wedge supports part of the load to be applied upon said roller.

Claims

1. A shore bracket for supporting form work used in concrete construction for vertical mounting on columns or walls comprising a base secured vertically to the column, a hollow tubular housing mounted vertically on said base, a non-rotating threaded shaft slidably mounted in said housing, a threaded nut mounted on said shaft and engaging the upper end of said housing, a roller for engaging the form work mounted on the upper end of said shaft vertically above said nut and means for locking said roller against rotation.

5. A bracket as described in claim 3, including a manually actuable screw carried by said head and moving said wedge carried by said head into and out of engagement with said roller.

6. A shore bracket for supporting form work used in concrete construction for vertical mounting on columns or walls comprising a base secured vertically to the column, a hollow tubular housing mounted vertically on said base, a non-rotating threaded shaft slidably mounted in said housing, a threaded nut mounted on said shaft and engaging the upper end of said housing, a roller for engaging the form work mounted on the upper end of said shaft vertically above said nut and means for locking said roller against rotation, including a key mounted in said housing and a longitudinal slot in said shaft receiving said key whereby rotation of said shaft in said housing is prevented.

7. A shore bracket for supporting form work used in concrete construction for vertical mounting on columns or walls comprising a base secured vertically to the column, a hollow tubular housing mounted vertically on said base, a non-rotating threaded shaft slidably mounted in said housing, a threaded nut mounted on said shaft and engaging the upper end of said housing, a roller for engaging the form work mounted on the upper end of said shaft vertically above said nut and means for locking said roller against rotation, including a head mounted in said shaft and notches in upper end of said threaded shaft engaging a rod welded in said head whereby said roller is positively aligned for direction in relation to form work.