US2319526A - Screed support - Google Patents

Description

My 18, 1943 5. J. WEARN SCREED SUPPORT Filed Aug. 28, 1942 INVENTOR."

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Patented May 18, 1943 UNITED STATES PATENT OFFICE 2,319,526 SCREED sUProa'r Stanley J. Wearn, Los Angeles, Calif.

Application August 28, 1942, Serial No. 456,466

6 Claims. (01. 72-128) The present invention relates to supports and has particular reference to a device for supporting screeds, such as used in surfacing concrete floors and roadways.

It is the general object of the invention to provide a simple, convenient and inexpensive device for supporting screeds or the like. It is an important object to provide a support on which a screed may be laid and which will maintain the screed firmly in position. Another object is to provide improved means for adjusting the device vertically and for maintaining it firmly in vertically adjusted position. A further object is the provision of improved construction of the device, whereby seating of the support in the ground is greatly facilitated.

These and other objects of the invention, as well as the many advantageous features thereof, will be readily appreciated upon perusal of the following detailed description and reference is invited to the accompanying drawing, in which preferred forms of my invention are illustrated.

In the drawing:

Fig. 1 is a side elevational view illustrating the device of the invention in its simplest form;

Fig. 2 is a substantially corresponding plan view of the device;

Figs. 3 and 4 show a modified form of the device in which the parts are designed and arranged to facilitate driving of the device into the ground; and Figs. 5 and 6 illustrate further modifications in means for adjusting the height of the support.

The device of Fig. 1 comprises a stake I, which terminates at the top in a grooved head, or saddle 2, of a shape to receive a screed in the form of a cylindrical rod or pipe A. A plate 3 is centrally perforated to slide on the stake l, and it is fitted with a set screw 4. It is important to note that, because the saddle is substantially semicircular, the upper half of the screed is entirely unobstructed.

In practice a series of supports are seated in the ground by driving the stake of each support down far enough to place the saddle at the proper height, whereupon the plate is firmly pressed against the ground surface and there locked in position by means of the set screw 4 to maintain the device securely in position. The screed is preferably a long piece of straight rod or pipe, which may be pushed along axially in the supports as the concrete surfacing progresses.

This method offers a distinct advantage over the conventional manner of clamping the screeds in position in extended series, in that no joints between abutting screed ends are present to form breaks in the continuity of the finished surface. Also, as the screed gradually is advanced along and beyond the supports, it is possible to withdraw the latter successively to be again seated in advance of the axially slidable screed. In this manner, it is possible to continue floor and road surfacing indefinitely with a pair of screeds and a few supports along each side edge of the surface to be finished.

Ordinarily, the device of Fig. 1 functions satisfactorily. Should it, however, be found difficult to seat the support in the ground to the proper height, it may be found advantageous to embody means for finer adjustment of the support after seating. This may be accomplished, as indicated in Figs. 3 and 41, by detachably fitting a saddle 6 on a plain stake l for axial adjustment thereon. The saddle may then be locked in position in any suitable manner, as by'means of a set screw 8.

One advantage of this construction is that the seating of the device is facilitated by driving the stake into the ground to approximately the proper height and then adjusting the saddle thereon until the correct height is obtained. Another advantage in the use of this form of device is that no danger is present of damaging the saddle when it is found necessary to employ a hammer or sledge to seat the stake. Should it be found that danger is present of hammer blows upsetting the upper end of a soft metal stake, it is a simple matter to seat a cap 9 on the end thereof during this operation, substantially as indicated in Fig. 4.

While screw threads are generally objectionable in devices of the character herein described, it may at times be found advantageous to employ such screw threads for the purpose of adjustment. To this end, the stake ID of Fig. 5 is shown threaded to engage screw threads of the plate II. The latter is, after the stake has been correctly seated in the ground, rotated on the stake until it rests firmly on the ground surface. No set screw is in this case required.

A similar result may be obtained, substantially as indicated in Fig. 6, by fitting the detachable saddle [5 on screwthreads at the upper end of the stem l6.

While I have described preferred forms of the invention it will, of course, be understood that other modifications may be embodied within the scope of the claims hereto appended, without departing from the spirit of the invention. Where the screed support is to be seated in wooden on the end of said stake for axial adjustment thereon, a ground-engaging plate axially adjustable on the stake, and means for locking said plate in position on the stake.

3. A support for a cylindrical screed comprising, a stake terminating at the top in a head shaped to receive said screed, and a ground-engaging member axially adjustable on said stake.

4. A support for a cylindrical screed comprising, a stake terminating at the top in a head shaped to receive and firmly to hold said screed, a ground-engaging member axially adjustable on said stake, and means for locking said memher in adjusted position on the stake.

5. A support for a cylindrical screed comprising, a stake, a saddle shaped to receive said screed and having a pendant socket fitted to encompass and axially adjustable on said stake, and a ground-engaging member axially adjustable on the stake.

6. A support for a cylindrical screed comprising, a stake threaded at the top, a saddle shaped to receive and firmly to hold said screed, said saddle having internal screw threads seatable on the end threads of the stake, and a groundengaging member axially adjustable on the stake.

STANLEY J. WEARN.

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