US1880706A - Screed for use in laying concrete and the like - Google Patents

Description

Oct. 4, 1932. D, H, BITNEY 1,880,706

SCREED FOR USE IN LAYING CONCRETE AND THE LIKE Filed Jan. 4, 1950.

IN VEN TOR Dame if Bizzze 26% &

A TTORNE Y3 Patented Oct. 4, 1932 UNITED STATES PATENT er DEWEY H. BITNEY, or ALBION, MICHIGAN. asslsuoaro, Union, strum. rnonucrs COMPANY, or ALBION, MICHIGAN, aoonronar on J3 MICHIGAN SCREED FOR USE IN LAYING CONCRETE AND LIKE Application filed January 4, 1930. Serial" No. 418,451,

The main objects of this invention are to provide a screed for use in laying concrete floors, pavements and other surfaceswhich is light in Weight and may be quickly positioned, and at the same time is eficient for the purpose and is so economical that it is practical to leave the same embedded in the concrete although it may be easily removed for re-use should it be desired.

Objects relating to details and economies of my invention will appear from the de' scription to follow. The invention is defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is illustrated in the accompanying drawing, in which:

Fig. 1 is a fragmentary perspective view of a preferred form of my improved screed, portions of the legs being shown by dotted lines to indicate that they may be cut to the desired length.

Fig. 2 is a fragmentary vertical section throu h a concrete floor illustrating the manner of using my improved screed, astriker bar or straight-edge being shown by dotted lines.

Fig. 3 is a detail view partially in section on line 33 of Fig. 1.

In the accompanying drawing, 1 represents a form, 2 a bed of cement thereon and 3 a striker bar or straightedge.

My improved screed comprises a longitudinal bar or rod 4 having angled legs 5 fixedly secured thereto in spaced relation,

the horizontal arms 6 of the legs being weldedto the under side of the rod as indicated at 7, Fig. 3. The legs are preferably formed of wire so that they may be readily out off to the desired length as severed portions 8 indicated by dotted lines in Fig. 1.

Certain of the legs are preferably disposed in opposed pairs as shown in Fig.1; that is, there are pairs of legs at intervals with single legs interposed between them although all of the legs might be arranged in pairs. This however is not found necessary in practice where the rod is of suitable guage and material. The pairs of legs, however, are of ad vantage in that they prevent the lateral swaying of the rod. The legs are spaced so that the rod, is supported; throughout its length without sagging or bending.

The screed is anchoredupon the: formby means of inverted V -shaped' anchors 9 engaged over the horizontal arms of the legs as 5 shown, in Fig. 1' and terminating in. eyes. 10 secured, to the form. by means of nails 11.

It will be understood that the legs are cut so that the top of the rod is in the plane of the desired surface of concrete. to

The concrete. is placed on the form or supporting surface, embedding the screeds, so that the thickness of the cement may be. determined by the screeds and a fiat surface produced by employment of a striker bar or straightedge as indicated in Fig. 2. If it is desired to remove the screeds, the anchoring wires 9 may be clipped and the screeds lifted from the concrete prior to its setting Without seriouslydisturbing the same.

In the applicants structure, there is very little metal exposed when the form is removed in the event it is desired to leave the screed embedded in the cement but in practice the screed can be readily removed without materially disturbing the concrete, it only being necessary to out the anchoring wires and lift the screed and the concrete may be easily smoothed'up without ordinarily any necessity for even adding additional mate- 8O rial.

I have not attempted to illustrate various adaptations and uses of my improved screed as it is believed that such embodiments or adaptations will be readily understood by those skilled in'the art to which the invention relates.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A screed comprising a longitudinal rod, and a plurality of angled legs disposed in spaced relation transversely of the rod with their horizontal arms fixedly secured to the under side thereof, the adjacent legs being 95 disposed oppositely, said legs being adapted to rest upon a supporting surface without penetration. I

2. A screed comprising a longitudinal rod, and a plurality of legs having laterally pro- 1.0

j ecting arms of substantial length at their upper ends disposed transversely of and Welded to the under side of said longitudinal rod, some of the legs being disposed at one side of the rod and some at the other, said legs being adapted to rest upon a supporting surface Without penetration.

3. A screed comprising a longitudinal rod, a plurality of legs having squared lower ends and arms at their upper ends disposed transversely of the rod and fixedly secured thereto in spaced relation, and anchoring Wires engageable With said arms.

4. A screed comprising a longitudinal rod,

and a plurality of angled legs disposed transversely of thelrod and having their horizontal arms Welded to the underside thereof in oppositely disposed relation, said legs terminating in unsharpened ends.

5. A screed comprising a longitudinal rod, and a plurality of angled legs disposed transversely of the rod and having their horizontal arms Welded to the underside thereof, some of the legs at least being arranged in opposed oppositely facing pairs, said legs terminating in unsharpened ends.

6. A screed, comprising a longitudinal rod, vertical legs having horizontal arms fixed to the underside of said rod, said legs being adapted to rest upon a supporting surface Without penetration, and inverted V-shaped anchors of Wire engaged over said horizontal arms and terminating in eyes secured to the supporting surface.

In witness whereof I have hereunto set my hand.

DEWEY ,H. BITNEY.

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