US1259442A - Concrete-form stay. - Google Patents

Description

P. F. RAMM am. NELSEN.

CONCRETE FORM STAY. APPLICATION FILED MAR. 21. 1916.

Patented Mar. 12, HMS.

INVENTORS P6711! F. F0777 777 BYHzf??? JVEZfiZ? ATTORNEYS.

PAUL F. RAMIVI AND HENRY NIELSEN, OF OAKLAND, CALIFORNIA.

CONCRETE-FORM STAY.

Specification of Letters Patent.

Patented Mar. 12, 1918.

Application filed March 27, 1916. Serial No. 86,979.

To all whom it may concern:

Be it known that we, PAUL F. RAMM and HENRY NIELSEN, citizens of the United States, residing at Oakland, in the county of Alameda and State of California, respectively, have invented certain new and useful Improvements in Concrete-Form Stays, of which the following is a specification.

This invention relates to improvements in concrete form stays and has for its object the construction of a device whereby the two sides of a concrete form are held in spaced relation against collapsing and bulging.

Another object of our invention is to provide a device which is cheap to manufacture, which is easily and quickly placed in position, thereby permitting the forms to be erected more quickly than by use of the spacing blocks and wire ties, which are used at the present time.

Another object of our invention is to pro-- vide a device, which consists of two parts joined by a universal joint so constructed that the stay will resist both tension and compression strains.

With these and other objects in view our invention consists in the novel construction, combination and arrangement of parts herein illustrated and more specifically pointed out in the appended claims.

Reference being had to the accompanying drawing forming a part of this specification,

Figure 1 is a view in perspective showing a section of a concrete mold and the manner in which our improved stay is used in connection therewith.

Fig. 2 is a view in plan of one form of the improved stay.

Fig. 3 is a view in side elevation of the same.

Fig. 4 is a view in elevation with a modification of this form more particularly adapted to use in light work.

Fig. 5 is a view in side elevation of the latter form of stay.

Referring to corresponding parts in the several views by the same numerals of reference, 1 denotes the upright studs, on the inside of which is attached the sheathing 2, this sheathing being spaced apart a distance equal to the thickness of the concrete wall. To maintain this distance between the sheathing it is usual to provide a compression member between the two portions of the form and to pass wires around the studs,

and by twisting the same to draw the two sides of the mold against the compression member. With our inproved stays both the wires and compression members are eliminated.

These stays consist of two parts 3 and 4E, joined in the center in order to facilitate handling and driving. In the form shown in Fig. 2, the section 4 comprises the main portion 6 provided with the bent end portion 7 which is adapted to be driven into the stud. The other end of 6 is bent in plane at right angle to the ends 7, and the end of this bent portion is looped back on itself, as shown at 8. The section 5 is also provided with an angular bent portion 7 which as in the opposite member, is provided with the angular face 9, so that when the device is driven into the stud the tendency is to cause the ends to assume the position shown by the dotted lines in Fig. 2. This makes the device more dilficult to pull from the stud after once being driven into the same, and especially as to the strains caused by the weight of the concrete.

The other end of 5 is provided with a loop 10, which loop passes around the bent portion 11 of member 4, and is then looped around the stem 12 as shown at 13. In this manner a device is provided with a universal joint, which is very hard to pull apart. The band 8 prevents side 4: from straightening out and the loop 13 prevents the opposite side from doing the same when a tension strain takes place between the two members.

It will also be apparent from the method of twisting the pieces together that when the members are straightened out there can be no sliding one on the other. This enables the stays to resist whatever collapsing tendency there may be between the two sides of the form. The universal joint facilitates the handling and driving of the stays into the studding.

In the modified form shown in. Figs. l and 5, the one member is provided with a plain loop, the other member with a hook shaped end adapted to pass through this loop. This form is intended for lighter construction as the hook or loop may be straightened out more easily than the forms shown in Figs. 2 and 3. I

While we have shown the preferred form of our invention it will be understood that minor changes may be made within the scope of the claims without departing from the spirit thereof.

What we claim as new and wish to cover by Letters Patent is 1. A form stay comprising two members attached to each other by a universal joint, and an angular b.6111 end on each of said members, forming hooks, said hooks having beveled ends to cause a change of angle of the hooks when forced into a support. 2. A form stay comprising two members one of which is provided with an eye at one end, theother having a hook engaging said eye and forming a substantially universal joint, the free ends of said members being bent at an angle to their respective members and substantially parallel to each other, the extremities of said bent ends having in, clined faces shaped to cause a change of angle when they are forced into studding or the like.

3. A form stay comprising two members larly disposed hooks.

4. A form stay comprising two members,

a loop on the end of one member forming an eye, a hook on the end of the second member adapted to pass through the said eye, a loop formed on the end of said hook to prevent removal from said eye, bent hook formed .on the free ends of said members, said last-mentioned hooks having inclined faces.

In testimony whereof we aflix our signatures. V I

' PAUL F. RAMM. HENRY N ELSEN copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

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