US1988746A - Screed support - Google Patents

Description

H. P. NEPTUNE SCREED SUPPORT Jan. 22, 1935.

Filed June 22, 1932 ATTORNEY:

Patented Jan. '22, 1935 UNITED STATES SCREED SUPPORT Herman P. Neptune, San Diego, Calif.

Application June 22,

6 Claims.

This invention relates to screed supports. Screed supports that the inventor is familiar with are unsatisfactory in many particulars, some of which may be enumeratedthe support itself may slip relative to its standard so that a true level for the poured plastic material, which may be concrete, is not obtained; or, the bracket itself may slip or move relative to the support so that an uneven grade will result in the poured flooring. Other diiliculties that the present inventor has noticed have been that most screed supports mustbe staggered in position so as to balance the load to prevent bending of the supports, and the chief objection to the average screed support is that it is not adjustable relative to the beam or joist within which it is placed. As a rule, the bracket carried by the standard or post is adjustable but the standard or post itself is not adjustable.

An object of the present invention is to overcome the several difllculties and deficiencies of existing screed supports of the character outlined above.

Preferably my screed support is formed in two 25 parts, one portion of which is adapted to be adiustably received within a deck and at a given height relative to the deck and the other portion of which may be placed upon the first portion as needed. In this way, it is unnecessary to provide complete screed supports as portions thereof may be utilized, thus reducing expense.

Another object is the provision of a screed support, one portion of which may be left within the poured material as a guide for finished floor 35 topping and which device may be removed at any time.

Another object is the provision of a screed support which does not interfere with the free use of a straight edge.

Another object is the provision of a screed support which is readily adjustable to various heights above a supporting structure.

Other objects of the invention will appear as the specification proceeds, among which is a screed support which is inexpensive in cost of manufacture, easily installed, and generally superior to screed supports now known to the inventor.

With the above and other objects in view, the 50 invention consists in the novel and useful provision, formation, construction and relative arrangement of parts, members and features, all as shown in certain embodiments in the accompanying drawing, described generally, and more particularly pointed out in the claims;

1932, Serial No. 618,590

(Cl. "I2-128) In the drawing:

Figure 1 is a fragmentary perspective view showing an adaptation of the invention in actual use,

ing one form of screed support,

Figure 3 is a fragmentary side elevation, partly in section, of the screed support shown in Figure 2,

Figure 4 is a fragmentary side elevation, partly in section, of a modified form of screed support,

Figure 5 is a fragmentary front elevation, partly in section, of the screed support shown in Figure 4,

Figure 6 is a fragmentary elevation of a modifled form of screed support,

Figure '1 is a fragmentary side elevation of the screed support shown in Figure 6,

Figure 8 is a fragmentary elevation, partly in section, of a modified form of screed support,

Figure 9 is a side elevation of a screed support, the poured material and its mold being shown in secttion and in part surrounding the screed sup- P Figure 10 is a cross-sectional view on the line 10--l0 of Figure 8,

Figure 11 is a fragmentary elevation, partly in section, of a modification of the screed support shown in Figures 2 and 3, and,

Figure 12 is an elevation of another modified form of screed support.

Referring now to the drawing, I have shown in Figure 1 a flooring 1 upon which concrete 2 has been poured. Itis customary to provide some form of screed support 3 for holding a screed 4. While in Figure 1, I have shown a single support, it will be understood that several screed supports are provided. Adapted to be placed between parallel screeds 4 is a scraper 5. The different screed supports are arranged at a given level, to the end that when the scraper is moved, the concrete which is poured upon the board will have its surface at a fixed level, the purpose of the scraper being to assure that the surface will be at the level desired. a

It is very essential that the screed support itself should be capable of adjustment, easily removed from the poured concrete, and should not leave a large opening in the poured concrete which is not readily filled after its removal. I have illustrated in the remaining figures several different forms of screed supports which are capable of obtaining the objects of my invention. The screed support shown at 3 in Figure 1 is likewise shown in Figures 2 and 3. This screedsupport Figure 2 is an elevation, partly in section, show- 5 inbludes a post or standard 6, one end of which is tapered to substantially a point, as shown at 7, with the shank of said standard or post including the tapered portion screw-threaded as indicated at 3. The screw-threads are preferably "coarse" and the diameter of the standard or post is of small-cross-seetion.- The entire shank of the post may be threaded, although in the present instance, only a portion thereof is threaded. This post forms one element of the screed support. The second element includes a bracket 9 provided with a base portion 10 and two spaced substantially parallel legs 11 and 12 integrally formed with the base. The base is formed with a central enlargement 13 and the base and enlargement are transversely bored, as shown at 14. A recess 15 in the base is concentric with said bore 14. The enlargement 13 is provided with a pair of diametrically disposed transverse bores 16 and 17 and the post 6 carries at its upper end an angular sided head 18 adapted to be received within the recess 15 below the top surface of the base and when so positioned, a cotter pin or other securing means 19 is adapted to be passed through the transverse bores 16 and 17 of the enlargement 13 and a transverse bore 20 in the shank of the post.

Referring to Figures 4 and 5, as before, I provide a standard or post 21, the shank of which is in part provided with coarse screw-threads 22 and the end of which shank is tapered, as shown at 23; The shank is provided with a square sided head 24 and also formed with a transverse bore 25 spaced below the head. A bracket 26 differs in form from the bracket 9 in that the bracket is adapted to support the screed 4 at one side of the post. It will be seen in the form of the invention shown in Figures 2 and 3 that the screed is centered directly over a supporting post. The

'bracket includes a base 27 having an up-turned edge 28 at right angles to the base, a back piece 29 paralleling the edge 28 of greater length than the said edge and a post engaging portion 30 at right angles to the back piece 29. Substantially parallel with the base 2'1 is a lug 31, the said mg and the post en a ing portion 30 being substantially parallel and in alignment. Both the portions 30 and 31 are provided with aligned transverse bores and the shank of the post is adapted to be passed therethrough, the squared head 24 resting upon the top surface of the part 30. The shank of the post is adapted to have a washer 32 included between the inner surface of the part 30 and a cotter pin or the like 33 passed through the transverse bore 25 of the shank of the post. In this manner, the several parts are held in position of assemblage. It will be seen that this form of bracket may constitute a mere stamping.

The form of the invention shown in Figures 6 and 7' is a modification of the form shown in Figures 2 and 3, the difference being that whereas the form of bracket shown in Figures 2 and 3 may be a casting, the form shown in Figures 6 and 7 may be the result of a stamping of sheet metal strip. In this respect, the post is the same as shown for the form of the invention shown in Figures 4 and 5, and the same reference characters are applied thereto. The bracket is formed by providing the base 34 with a depressed portion 35 relative to two aligned portions 36 and 37, the depressed portion being adapted to receive the head 24 The bracket then is provided with two portions at substantially right angles to the parts 36 and 37, as shown'at 38 and 39, respecmeans tlvely, then returnedly bending the strips so as to parallel the portions 38 and 39', shown at 40 and 41, and then bending the strips inwardly at right angles, as shown at 42 and 43, so that said ends overlap. The overlapped ends are provided with transverse bores adapted to be maintained in alignment when the shank 21 is passed therethrough.

The form of the invention shown in Figures 8. 9 and 10 includes a post 44, the shank of which is screw-threaded in part, as shown at 45 and brought to a tapering point as shown at 46, the upper end of said shank being reduced in diameter to provide a shoulder 47 and provided with an extended portion 48 having angular sides, in the present instance squared. The bracket 49 includes a base 50 and two spaced upstanding legs 51 and 52. The base is provided with a central enlargement 53 and both the base and .enlarge-.

ment are formed with a bore 54, the walls of which are angled, corresponding to the angular formation of the part 48. The diameter of the enlargement 53 of the base corresponds with the diameter of the shank of the post 44. Thus, when the bracket is in position upon the post, the enlargement will rest upon the shoulder 47, the portion 48 being totally confined within the transverse bore 54 in the bracket.

The form of the invention shown in Figure 11 does not differ essentially from the form of the invention shown in Figures 2 and 3, save and except that the transverse bore in the post is situated in a difierent zone from that shown in Figures 2 and 3, to-wit, below the enlargement 13 of the bracket and whereby this enlargement will rest upon a cotter pin or similar means passed through said bore.

The operation,-uses and advantages of the invention just described are as follows:

Referring first tothe form of the invention shown in Figures 2 and 3, the sharp or tapered point of the shank ofthe post will readily form its own opening in the flooring 1 and the post may be screwed within the flooring so that the bracket will have ,any height desired by turning the bracket to likewise cause rotation of the post, or a wrench may be placed upon the squared end of the post and the post adjusted as to height. As the head indicates the top surfaceof the base of the bracket, it is obvious that mere adjustment of the post relative to the flooring 1 will indicate the bottom surface of the screed 4. A plurality of the screed supports may be placed in position. In this form of screed support, the bracket may slide relative to the post when the cotter pin is removed. The advantage of this form of screed support is that the load is directly carried over the center of the post and there is no side pull on the post.

Considering now the form of the invention as shown in Figures 8, 9 and 10, this form of the invention permits the said post to be placed within the flooring at adjusted heights, followed by a removal of the bracketsuntil it is desired to use the same. Thus, a plurality of the posts may be adjusted within the flooring and as the floor is poured, the brackets can be removed from the posts around which the concrete has been poured and the brackets placed on other posts. The posts can then be removed from the concrete at any time desired prior to complete hardening of the post within the flooring. Furthermore, as before stated,the posts in every adaptation of the invention are of small cross section so as not to make a large opening in the concrete or other substance. Furthermore, the post allows proper adjustment for all portions of the flooring so that regardless of whether or not the flooring is at grade, the concrete or other plastic substance may be poured thereon at the proper height.

The form of the invention shown in Figures 6 and '7 does not differ essentially in operative details from the form shown in Figures 2 and 3. The only advantage of this form is that it is stamped from sheet metal.

The form of the invention shown in Figures 4 and 5 carries the screed at one side of the post. This may be an advantage in certain installations and this form of screed support may act in conjunction with any of the other forms where it is impractical to align the screed supports.

The form of the invention shown in Figure 1 operates on the same principle as the invention shown in Figures 2 and 3.

In every instance, it is unnecessary to use any wire ties to stabilize the posts, and it will be seen that no portion of the support protrudes above the screed to interfere with the free use of the straight edge (see Figure 1).

It is also evident that the brackets may swivel relative to the posts in the forms of the invention shown in Figures 4, 5, 6, 7 and 11, and the swiveling action of the brackets may be obtained in the forms shown in Figures 2 and 3 by removing the cotter pin. Thus, the bracket may be turned in any direction to align with any other screed support. In the form of the invention shown in Figures 8, 9 and 10, the bracket itself may be turned, which will also turn the post or the bracket may be removed from the squared end of the post and replaced thereon at a different angle.

In the modified form of my invention shown in Figure 12, the post 6 is formed integral at its upper end at 60 with the bracket 9.

It is obvious that various changes and modifications and variations may be made in practicing the invention in departure from the particular showing of the drawing without departing from the true spirit thereof.

I claim:

1. In a screed support, a post provided'at one end with an angular-sided head, a bracket removably carried by said post, said head being adapted to be confined in part within said bracket, and means for securing the bracket to the post when the head is so confined. I

2. In a screed support, a pointed one piece post provided substantially throughout its length with coarse screw-threads for adjustably securing said post within a supporting structure, a bracket carried by said post, and means for detachably holding said bracket to the post.

3. In a screed support, a bracket comprising a pair of spaced leg members and a base, an enlargement upon one surface of said base, said base and said enlargement being formed with a through bore, a post adapted to be passed through said bore, and means for securing the post to said bracket at the zone of said enlargement.

4. In a screed support, a post provided at one end with a shoulder and a longitudinal extension having angular sides, a bracket provided with a bore adapted to be received over said extension and to rest upon said shoulder, and said post being formed with coarse screw-threads whereby the post and its associated bracket may be adjustably secured to a supporting structure.

5. In a screed support, a round post pointed at its lower end and externally threaded upwardly therefrom adapted for screw-threaded supporting engagement with a wooden base, flat surfaces at the upper end of the post to facilitate rotation thereof for engagement and vertical adjustment with respect to the base, and a U-shaped screed supporting bracket at the top of said post.

6. In a screed support, a pointed post pro-' vided substantially throughout its length with coarse screw-threads for adjustably securing said post within a supporting structure, flat surfaces at the upper end of the post to facilitate rotation thereof, and a U-shaped screed supporting bracket carried by said post and swiveled with respect to the same.

HERMAN P. NEP'I'UNE.

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