US 2190748 A
Description (OCR text may contain errors)
I Feb. 20, 1940. c w s 7 2,190,748
S ECURING DEVICE FOR CONCRETE FORMS Filed Jan. 13, 1937 v fiwen ZWzkzess 4 l "u Patented Feb. 20, 1940 1 UNITED STATES PATENT OFFECE 2,190,748 1 v SECURHNGD'EVICE FOR CONCRETE FOR-MS Chester I. Williams, Grand Rapids, Mich.
Application January 13, 1937, Serial No. 120,412
A particular object of the inven tion is the provision of improved fastening devices whichare adapted to secure oppositely disposed form members together by means operable from the outside of the forms.
Another object of the invention is the provision of improved fastening devices whereby oppositely positioned concrete form members maybe spaced in their operative position by manipulation of the devices from the outside of the form.
A further object of the invention is the provision of improved fastening devices of the kind described which are removable from the forms .-without injury either to the forms or to the devices. I
Still another object of the invention is the provision of an improved fastening device of the kind described which is inexpensive, simple,
easily installed and satisfactory for its intended purpose.
Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art from the disclosure herein given.
To this end my invention consists in the novel construction, arrangement and combination of parts herein shown and described and more par" ticularly pointed out in the claim.
Referring now to the drawing forming part of the specification:
Fig. 1 is a perspective view of a fragmentary 'elevational section taken through a concrete :form and showing the opposite walls of the form secured together by a device embodying the principles of my invention;
Referring now more particularly to the draw-.
ing, the numeral 10 designates a plurality of closely spaced boards providing oppositely positions, the burs providing stops contacting with backof the studs II to the inner face of the tioned form members, the boards of each form member being connected by nails or the like with exteriorly positioned vertically extending studs H and the studs being connected by lon- H gitudinally extending 'waler members l2.
Theforms can be of any desired height and length and the oppositely positioned form members are adapted to be dismantled and used regether by aplurality of fastening devices similar ing imbedded in the concreteupon dismantling of the forms. The tie rods l5 are provided with burs ll adjacent their threaded end por- 25 the ends of the elongated members l3 when the. tie rod has been threaded substantially the full length of the sockets l6. k The elongated members l3 are preferably of uniform diameter throughout their length except at their inner ends where they taper slightly and their diameter is slightly greater than that of the rod l5. In mounting a device on the form, the rod i5 and the members [3 assembled as shown, are projected through aligned holes provided in the boards I0 adjacent to a stud H and waler members l2 of both the oppositely positioned form members. The members I3 each have a groove l8 adapted as a guide to indicate when the form members have been brought into spaced relation corresponding to the required thickness of the wall to be poured. The distance from the such rotation of the members l3 as might otherwise occur when threading the end brackets I 4 into clamping engagement with the waler members [2. The brackets I4 are preferably fastened in vertical position in engagement with the waler members l2 by nails 25 driven into the members through apertures 2? provided in the brackets for that purpose, it being understood that the nails are removed before attempting to rotate and release the members [3 by either of the methods hereinbefore described.
The brackets Id have a central boss 2| exterio-rly bounded by an angular surface adapted to receive a socket wrench by means of which the brackets are threaded on and ofi the projecting ends 23 of the members l3. The threaded ends 23 of the members i3 are ofiset'to provide a shoulder 24 with which the bracket l4 contacts. The boss 2! has a concentric counter-sink or socket 22 adapted to receive a ratchet wrench or the like for engagement with the projecting end portion 23 of the member 53 whereby the niember may be rotated for dismantling after the nails 2E3 have been removed and the concrete has hardened or set. For this purpose the projections 23 are threaded opposite hand to the threads on the ends of the tie rods l5 and, as a result, if the wrench is threaded onto the projection 23 and into engagement with the bracket l*i, when the bracket is in contact with the shoulder 24, continued rotation of the wrench will break the bond of the concrete with the member I 3 and cause rotation of the member in a direction to disengage it from threaded connection with the tie rod 15. The brackets I4 are also provided with reinforced end portions 28 to permit the use of a hammer to rotate the bracket without injury thereto in case it is desired to rotate the member I3 otherwise than by a wrench threaded onto the end portion. 23 thereof as above described.
Thus it will be seen that I have provided a novel, inexpensive, simple, and durable assembly of members adapted as a securing device of the kind described which, except for the middle tie rod portions, may be quickly and easily removed from the forms and used repeatedly in the manner described.
Having thus described my invention, it is obvious that various immaterial modifications may be made therein without departing from the spirit of my invention, hence I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combina- 1 tion of parts herein shown and described or uses mentioned.
What I claim asnew and desire to secure by Letters Patents is:
A device for securing oppositely positioned concrete form members in fixed spaced apart relation, said device comprising an elongated strut and end brackets, said strut consisting of an intermediate section having threaded ends and of end sections having a limited threaded connection with the intermediate section and an oppositely threaded connection with the adja cent brackets, the outer threaded ends of" said end sections being offset to provide a shoulder against which the bracket is adapted to abut when the device is assembled, said brackets each providing means for attachment of a wrench whereby the brackets are adapted to be rotated in one direction to accomplish full threaded engagement and abutting relation with the adjacent shoulder when the device is assembled, and by continued rotation in the same direction the bracket is adapted to rotate the end section .i
CHESTER I. WILLIAMS.