US3743232A

US3743232A - Concrete form

Info

Publication number: US3743232A
Application number: US00161780A
Authority: US
Inventors: H Vaughan
Original assignee: BOWERMAN BROS Inc
Current assignee: BOWERMAN BROS Inc
Priority date: 1971-07-12
Filing date: 1971-07-12
Publication date: 1973-07-03
Anticipated expiration: 1990-07-03

Abstract

A form for casting concrete which has a pair of spaced walls formed of panels arranged in multiples along each side wall of the form, the panels of each side being attached together in edge to edge relation so that a large unit is formed with the opposite gangs of panels also so arranged that both of the spaced gangs may be lifted at one time by a crane to be moved from one location to another. The walls are connected together at their upper portion by a means which enables the moving of the walls at their upper portion toward or from each other, the movement toward each other placing them in a desired position for pouring the concrete while the movement away from each other breaks them away from the cast and hardened concrete for movement to another location.

Description

United States Patent 1191 Vaughan 1 CONCRETE FORM Hugh J. Vaughan, Warwick, 12.1.

[73] Assignee: Bowerman Bros., Inc., Providence,

[22] Filed: July 12, 1971 [21] Appl. No.: 161,780

[75] Inventor:

52 us. c1 249/34, 249/50, 249/118,

249/162, 249/194, 425/62 51 1111.0. ..E04g 11/06 58 Field of Search 249/129, 13, 18,

[56] References Cited UNITED STATES PATENTS 3,497,579 2/1970 Barron 425/63 X 3,595,514 7/1971 Sanders 249/192 X 11 1 3,743,232 14 1 July3,1973

Primary Examiner-J. Spencer Overholser Assistant ExaminerDeWalden W. Jones Attorney-J-lerbert B. Barlow et al.

[5 7] ABSTRACT A form for casting concrete which has a pair of spaced walls formed of panels arranged in multiples along each side wall of the form, the panels of each side being attached together in edge to edge relation so that a large unit is formed with the opposite gangs of panels also so arranged that both of the spaced gangs may be lifted at one time by a crane to be moved from one location to another. The walls are connected together at their upper portion by a means which enables the moving of the walls at their upper portion toward or from each other, the movement toward each other placing them in a desired position for pouring the concrete while the movement away from each other breaks them away from the cast and hardened concrete for movement to another location.

5 Claims, 4 Drawing Figures Patented July 3, 1973 3,743,232

2 Sheets-Sheet 1 38 aa 42\ 45 as F l 2 INVENTOR HUGH J.. VAUGHAN ATTORNEYS Patented July 3, 1973 2 Sheets-Sheet 2 7 /J 7 R 2 5 m m M1 W. 0 v a 3 m Ill l l l l l llllllllllll l lllll h l hl l lil v lllh lllllll l l l h l hr hr VAUGHAN HUGH ATTORNEYS CONCRETE FORM BACKGROUND OF THE INVENTION I-Ieretofore although in some cases the opposite walls of a concrete form have been so connected that they might be handled together. The connection between the walls has been more or less of a complicated nature with no easy means for breaking the walls of the form from the cast concrete.

SUMMARY OF THE INVENTION The opposite walls of the concrete form are each formed by a gang of panels supported by and depending from elongated collars. The collars are connected together at a plurality of locations by a means which extends between the collars with a crank-like device for moving the collars toward each other or away from each other and after casting of concrete has been completed so that the collars may be lifted with their gangs of panels attached and moved to another location.

DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the pair of spaced walls of the form showing their means for lifting the pair from position;

FIG. 2 is a top plan view on a much larger scale of the means which connects the opposite walls together;

FIG. 3 is a section illustrating the walls held in substantially vertical parallel position and the means between the walls arranged to hold them in this position; and

FIG. 4 is a sectional view similar to FIG. 3 but illustrating the means which connects the opposite walls of the form as swung to space the walls from each other at their upper ends.

DESCRIPTION OF THE PREFERRED EMBODIMENT In FIG. 1 I have shown the concrete form designated generally as comprising spaced walls 11 and 12 with each wall formed by an elongated collar 15 of channel form providing, as shown in FIG. 3 on a larger scale in section, this collar 15 as having a bridging portion 16 with flanges 17 extending from its upper and lower edges to provide a channel construction. A plurality of panels 20 each having a plywood body 20 and a peripherally

metal frame

21 and 22 is secured to the collar 15 by an L-shaped bracket 23 and bolts 23' the bracket 23 being welded to the collar 15 or otherwise secured thereto. Each panel is secured to its next panel in edge to edge relation by suitable wedges 24 positioned through abutting frame 22 and locked together with a second wedge as at 25. Thus each wall of the form becomes substantially a single unit depending from the collar 15. These wall units may be 30 feet long and may be varying heights depending upon the height of the selected panels. These panels are standard construction which come in various heights and they may be made up upon the collar 15 in the height desired.

Two of these walls with the panels with the plywood body portions in face to face relation are connected together by a means extending between the walls with the following construction. Eats 30 are mounted upon the upper flange 17 of one collar to extend upwardly therefrom. A bar 31 in two

parts

32 and 33 has these parts connected together by means of holes 34 and bolts 35 so as to provide adjustment for the desired length. This bar 31 is pivotally connected to the ear 30 by a bolt 36 with a head and nut loosely secured so that the bar is permitted to freely pivot on the ear 30. On the opposite wall12 of the form there is also provided an ear 38 which pivotally mounts a crank-like member 39 by means of the pin 40 which is of bolt form with a head and nut at its ends and is also arranged to loosely mount the crank member 39 for freely pivoting about this axis 40. The bar 31 is secured to the crank member 39 in a pivotal fashion such as by pin 41 with a head and nut also loosely attaching the member 39 and bar 31 together at a location so that the axis of pin 41 is spaced from the axis of the pin 40 the arrangement being such that the bar 31 will be substantially horizontal and in a plane at right angles to the walls of the panel when in closed position such as shown in FIG. 3. A handle 42 is secured to the crank member 39, and this handle may be swung from the postiion shown in FIG. 3 to the position shown in FIG. 4 so as to move the crank member 39 about its pivotal axis 40 and swing the axis of the pivot 41 thorugh a radius of the distances that the two axes are apart so as to move the bar 31 from the position shown in FIG. 3 to the position shown in FIG. 4 which will increase the spacing between the walls of the concrete form in the amount of the radius between the

axes

40 and 41 and cause the walls of the form to be separated from the poured concrete designated 50 or break it from the poured concrete 50 after hardening so that the walls may be readily lifted after the concrete is set in position. An arm 45 may extend from the handle 42 so that when in closed position the arm will be in adjacency to the lower flange 17 with an opening 46 to register with opening 47 in flange 17 to receive a pin 48 and lock the handle 42 in closed position.

Eyes 51 are attached to the ear 30 in a pivotal manner while an eye 52 is attached to the crank member 39. Some flexible means such as a cable or chain 53 (FIG. 1) connects these two eyes together in a bridle form and a plurality of these bridles are connected together by a lift beam 54 which in turn is connected to some suspending means by a bridle 55 and a lift cable 56 so that the crane may lift both of these walls of the concrete form at one time to move it from one position to another. Further it will be apparent that the position of

eyes

51, 52 is such that as the form is lifted by a bridle 53, the inward pull will rock the walls about

pivots

36, 41 so that the lower ends will break away from the cast concrete.

In placing the walls in position channels 60 would be laid in alignment where the proposed cast concrete was to be erected. The walls 11, 12 of the form 10 would then be lowered into position on the channel 60 and just inside of the flanges of the channels which would align the lower portion of the walls of the form, while the upper connection between the walls of the form would hold the upper edges in their desired relationship causing the walls to be parallel throughout their length and height. After the concrete is poured and the walls of the form are broken from the set concrete wall 50 as shown in FIG. 4, the walls of the panel will be lifted as before described by means of a crane leaving the channels 60 in position beneath the concrete casting which has been formed. Suitable bracing, of course, may be had of the walls of the form where it is found desirable.

I claim:

l. A concrete form comprising a pair of spaced elongated collars, a plurality of panels in generally edge to edge relation secured to and depending from said collars, means to tie said panels to each other, connecting means to extend between the collars comprising a bar pivoted to one collar and extending toward the other collar, a crank pivoted to said other collar and receiving in pivotal relationship the bar, said crank in one position drawing the rollers together and in the other position separating them.

2. A concrete form comprising a pair of spaced elongated collars, a plurality of panels in generally edge to edge relation secured to and depending from said collars, means to tie said panels to each other, connecting means to extend between the collars comprising ears on one collar, a bar pivoted to said ear and extending toward the other collar, a member rockably secured to the other collar on one axis and pivotally secured to said bar on an axis spaced from the first said axis and means to move said member about the first axis to separate the collars or draw the collars toward each other.

'3. A concreteform as in claim 2 wherein means are attached to said ear and said member for lifting the pair of collars and the panels from one position to another in unison.

4. A concrete form as in claim 2 wherein said bar is adjustable to space said collars different distances from each other.

5. A concrete form as in claim 2 wherein means are provided for securing said member in position to hold the collars contracted toward each other.

Claims

1. A concrete form comprising a pair of spaced elongated collars, a plurality of panels in generally edge to edge relation secured to and depending from said collaRs, means to tie said panels to each other, connecting means to extend between the collars comprising a bar pivoted to one collar and extending toward the other collar, a crank pivoted to said other collar and receiving in pivotal relationship the bar, said crank in one position drawing the rollers together and in the other position separating them.

3. A concrete form as in claim 2 wherein means are attached to said ear and said member for lifting the pair of collars and the panels from one position to another in unison.