US2206493A

US2206493A - Shuttering for molding walls in situ

Info

Publication number: US2206493A
Application number: US175997A
Authority: US
Inventors: Whatling James Lee
Original assignee: J L WHATLING Ltd
Current assignee: J L WHATLING Ltd
Priority date: 1937-01-11
Filing date: 1937-11-23
Publication date: 1940-07-02
Anticipated expiration: 1957-07-02

Description

July 2, 194-0. J. L. WHATLING 2,205,493 SHUTTERING FOP. MOLDING WALLS IN SITU Filed Nov. 23, 1937 2 Sheets-Sheet l INVENTOR James Lee WHATLING A 7' TORNEYS J. L. WHATLING 2,206,493

SHUTTERING FOR MOLDING WALLS IN SITU Filed Nov. 23, 1957 2 Sheets-Sheet 2 if y Q 51 Si \Zlifi $5 AN 10 INVENTOR JAMES LEE WHATLING A T TORNEYS Patented July 2, 1940 unireo ESTATES SHUTTERLING FOR MOLDING WALLS IN SITU James Lee Whatling, Ipswich, England, ,assignor to J. L. Whatling Limited, ,Ipswich, Suffolk,v England, a British company i 7 .Application November 23, 19.37, Serial No. 175,997-

In Great Britain January 11,1937

p '1 Claim. (Chas-4131 This invention relatesto shuttering .for' molding concrete walls in situ.

Heretofore, shutter boards at an angle have been connected by means of an angle connector whereof the limbs engaged rabbets in the ends of the shutter boards and were bolted thereto; the height of the shuttering was usually such that several bolts, e. g., at least six, were required for fixing each limb of the angle connector to the shuttering.

The present invention has for its main object to provide improved means for holding the angle connector in position whereby the numbers of bolts required is considerably reduced, thus effecting a saving not only in the cost of the bolts. but also in the time occupied in assembling and removing the shuttering. According to the invention there is provided for use in molding concrete walls shuttering comprising two side walls-that define an angle between them and consist each of shutter boards arranged edgewise in superposed relation, which walls are spaced apart to form a gap at the apex of the angle and have each a rabbet at the gap in the side faces of the boards outside the angle, an angle connector seated in the rabbets so as to lie flush with the outside faces of the side walls and closing said gap, abutments that are fixed within said angle on the side walls and are spaced apart one from another at opposite sides of the gap, which abutments have each a shoulder that lies adjacent to an inner face of a side wall and faces away from the gap and clamping means for seating the angle connector firmly in the rabbets and simultaneously tending positively to draw the side walls towards one another, which clamping means comprises two U-shaped clamping members that are spaced apart in the direction of length of the gap and have their side limbs bearing against the shoulders of said abutments, and two nutequipped bolts each attached at one end to the inner face of the connector and each extending through one of said clamping members, each of which bolts is disposed with its longitudinal axis bisecting the angle formed by the limbs of the connector.

Preferably, each nut-equipped bolt is readily detachably hinged at its end remote from its nut to the inner side of the angle connector.

One embodiment of the invention is diagrammatically illustrated by way of example in the accompanying drawings in which- Figure 1 is a sectional plan showing the angle connector and clamping device, and

Figure .2 is a perspective -vi'ew,"drawn to a smaller scale, looking fromwithin the angle formed by the two side'walls of the shuttering.

Like reference numerals indicate like parts in both views.

Each side wall of the shuttering forming the angle comprises a number of shutter boards ll] arranged one above another in the usual manner and so as to leave a gap I I between them at the corner. This gap is closed by an angle connector l2, whereof the limbs are seated in rabbets l3 in the ends of the boards at the outside of the shuttering so as to lie flush with the outside faces of the side walls. The boards of each side wall of the shuttering are connected together by means of vertical ledges i4 and horizontal runners I5 which are bolted together by bolts l6. These bolts extend through distance tubes I! and. serve also to hold together cavity boards, if such are employed for making a cavity wall, and also the outer shuttering, not shown.

Fixed to the inner face of one or more of the shutter boards ill in each side wall of the shuttering is an abutment constituted by a ledge 18 which extends from top to bottom of the shuttering. Each ledge provides a shoulder that lies adjacent to an inner face of a side wall and faces away from the gap H. The two ledges it are embraced and connected at or near each end by a shallow U-shaped clamping member 19, whereof the side limbs bear against said shoulders, and the ledges are shaped so as to fit snugly in the ends of the clamping members which lie across the angle formed by the side walls of the shuttering.

On the inside of the angle connector 62 at the corner thereof forked lugs 20 are provided, as shown most clearly in Figure 1. Pivotally connected to each forked lug by means of a horizontal pivot pin 2| is a clamping bolt 22 which extends through the associated clamping member l9 and is provided with a wing nut 23, whereby the angle connector 52 and the clamping member l9 can be drawn together to hold the angle connector firmly seated in position on the shuttering and to draw the side walls towards one another. The longitudinal axis of the clamping bolt 22 bisects the angle formed by the limbs of the angle connector, so that equal force is exerted on each limb during the clamping operation, and the clamping member lies at right angles to said axis.

When the wing nut 23 and the. clamping member I9 are removed from the bolt 22, the

latter is free to swing downwards about the pivot pin 2| so as not to obstruct the removal of the shutter boards when dismantling the shuttering.

It will be appreciated that with this construction only two clamping bolts are required at each corner of the shuttering instead of a much larger number used in previous constructions comprising an angle connector.

If necessary, one or more intermediate clamping members and bolts may be provided; also, the ledges [8 may be replaced by a number of separate blocks.

I claim:

For use in molding concrete walls, shuttering comprising two side walls that define an inner angle of the concrete wall between them and consist each of shutter boards arranged edgewise in superposed relation, which walls are spaced apart to form a gap at the apex of the angle and have each a rabbet at the gap in the side faces of the boards outside the angle, an angle connector seated in the rabbets so as to lie flush with the outside faces of the side walls and closing said gap, abutments that are fixed within said angle on the side walls and are spaced apart one from another at opposite sides of the gap, which abutments have each a shoulder that lies adjacent to an inner face of a side wall and faces away from the gap, and clamping means for seating the angle connector firmly in the rabbets and simultaneously tending positively to draw the side walls towards one another, which clamping means comprises two U-shaped clamping members that are spaced apart in the direction of length of the gap and have their side limbs bearing against the shoulders of said abutments, and two nut-equipped bolts each attached at one end to the inner face of the connector and each extending through one of said clamping members, each of which bolts is disposed with its longitudinal axis bisecting the angle formed by the limbs of the connector, and is readily detachably hinged at its end remote from its nut to the inner side of the angle connector.

JAMES LEE WHATLING.