US1385823A - Spacing-block - Google Patents

Description

C. GRANT.

SPACING BLOCK.

APPLICATION FILED SEPT 23. 1920.

1,385,823. I PatentedJuly26,1921.

IN VEN TOR. Char/e6 6121127" A TTORNEYS.

' cHARLEs GRANT, o'F'sAn rnai vcrsco/oamronivm.

' SPACING-MiooKr To all whom't may] concernf.

Be it known that, I CHARLES GRANT, a

citizen of the UnitediStates, residingjat the city and county of San Francisco and State of California, have, invented a new and useful Improvement in Spaclng- Blocks, of which thefollow ng 1S, a specification.

This invention relates to concrete con-.

struction, and especially to a spacing block to be employed during the erection of forms and molds.

'One of the objects of the presentinven tion is to provide a simple, substantial and cheaply manufactured spacing block. to be employed during the erection of forms or molds of a concrete structure, and especially a spacing block which will accurately gage and maintain a predetermined distance between the forms, and which maybe readily and quickly placed during the erection of the forms.

Another object of the invention is to provide a spacing block which may be con structed of concrete, and which willform a permanent part of a concrete wall or structure when completed; further to provide an anchoring means which not only secures the spacing blocks between the forms during the erection thereof and during the pouring of the concrete, but which will also serve as a gage and anchor if an exterior plastering coat or finish is applied.

The invention consists of the parts and the construction, combination and arrangements of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is a sectional view of a concrete mold or form showing the application of the invention.

Fig. 2 is a perspective view of the spacing block.

Referring to the drawings in detail, A indicates a form such as generally employed during the erection of a concrete wall or similar structure. These forms are spaced apart a distance equal to the thickness of the wall required and are generally held in such spaced position by means of wooden spacing blocks or the like. These blocks become embedded in the concrete wall when the concrete sets and therefore become a permanent part of the wall structure. Such blocks are of course subject to decay and soon rot out and openings are in this manner produced which causes considerableseepage Specification ofLetters Patent. Patented Application filedSeptember 23,: "1920; Serial No. {121233042X in Far y or l akage particularly in foundations, basements, etc l The, purposefoftthe present invention is to provide a spacing block which will not only reta n the forms .accurlately spaced dur ing erection and during the pouring of the concrete, but which may form a part of the concrete structure without danger of forming leaks, due to causes, heretofore referred to.

The spacing block forming the subject matter of the present invention is preferably constructed of concrete and is formed in moldsof any suitable construction and may be given any shape desired. I havein the present instance shown a spacing block which is square in cross section and sufiiciently long to produce the thickness of the wall desired. For instance the spacing block may be four inches, six inches, eight inches. or any length required, and as such maintains the proper spacing between the forms when erected. One or more surfaces may be grooved or recessed as at 2, or projecting ridges such as indicated at 3 may be formed to positively key the spacing block in the concrete wall when the concrete becomes set, such projections or grooves are of further importance as they will practically prevent seepage between the concrete proper and the spacing block if a proper bond or contact between the same is not made.

7 For the purpose of securing the spacing blocks between the forms, I provide a projecting spike such as shown at 4. The spikes may be formed by running a wire through the entire length of the block, or by placing a nail at one or both ends. In actual practice I find that one projecting spike 4: is suiiicient as the opposite end of the spacing block will be held in position .when the adj acent form is erected or placed in position.

By constructing the spacing blocks as here shown, it should be obvious that the blocks will form a permanent part of the wall or structure when this becomes set. Again it is obvious that leakage should not take place as a perfect joint or bond is' generally obtained between the concrete in the wall and the spacing blocks. Any imperfection in the bond Will however be taken care of by roughening the surface ofthe spacing block or'by forming projections or grooves as shown. Further it can be seen that removal of the forms will leave the projecting spikes 4. These may be clipped off or flattened if desired, or may be July 26,- 1921. 7

employed as anchoring means if an exterior finishing coat or plaster is applied Q They Will at the same time serve as a gagewheree by the thickness of the plasteringcoat may be determined.

' While the js 'oacing bloclr is here described as constructed of concrete, it is obvious that any other similar material may be employed. I further wish it understood that the sha-peof the block may be varied to suit-particular conditions; and also that one or more spikes may be employed if desired.

Having: thus "described my invention, What I'claim and desire to secure by Letters Patent is- 1. A' spacing block for concrete forms comprising an elongated block adapted to be interposed between the forms to maintain :1

predetermined spacing between the same, and a spike-like projection in the block adapted to enter the form to secure'the block spike like projection at one end thereof, said spike-like projection being embeddedin the concrete of the block and forming a partial reinforcement therefor.

' In testimony whereof I have hereunto set my handin the presence of two-subscribing witnesses. I

' CHARLES GRANT. Witnesses: ETIENNE N. FOUXGANS,

M. W. GARDEN.

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