US1069821A - Concrete-form fastener. - Google Patents

Description

Patented Aug. 12, 1913.

Q Witnesses the planking thereof spective view showing the parts of 'nrrrrnn sire-trons lPATETNC HOXVARD M. SHERWOOD, OF PHOENIX, NEW YORK, ASSIGNOB 0F ONE-HALF TO -MIOHAEL C. RYAN, OF PHOENIX, NEW YORK.

CONCRETE-FORM. FASTENE'R.

Specification of Letters Patent.

Patent-retiring. 12;, ans,

Application filed March 11, 1908. Serial No. 420,433.

To all whom/it may concern:

Be it known that I, HOWARD M. SHER- woon, a citizen of the United States, residing at Phoenix, Oswego county, New York,

have invented certain new and useful improvements in Concrete-Form Fasteners; and I do hereby declare the following to be a full, clear, and exact description of the in vcntion, such as will enable others skilled in the art'to which it appertains to make and use the same.

This invention relates to certain improvements in devices employed in geonnection with the construction of concrete walls and the like, and more particularly relates to an improved concrete form fastener; and the objects and nature of my invention will be readily understood by those skilled in the art in the light of the following explanation of the structure illustrated by the accompanying drawings as my preferred embodiment from among other formations within the s irit and scope of my invention.

Re erring 'to the accompanying drawings :Figure 1, is a vertical section through a concrete form fastened by devices-of my invention, showing a portion of-the concrete wall or other body therein. Fig. 2, is a horizontal section through showing the form walls, and fasteners therein, one or the bolts or screws of the upper fastener 'is shown partially, withdrawn,

while the bolts of the lower fastener have been entirely withdrawn. Fig. 3, is a pera tie or fastener detached from each other. Fig. 4, is a vertical section through form walls and an intervening body of concrete showing the opposite bolts'or screws .arrangedont of line or in different planes and the fastener or tie bent or adjusted to receive both bolts. Fig. 5, shows a modified form.

' n buildlngup forms for the construction of concrete walls, 1t is a common practice to employ wire for the purpose of holding up the sides or we is oi the wooden form. Spacing blocks are usually placed between the opposite plank walls of the form and then lengths of wire are passed across the the form sides and through and secured or twisted around the frame beams or girders at the outer faces of the planking The wire stretches and it is necessary to twist the same to hold thc walls up against said blocks space between a body of concrete,.

and spaced the desired distance apart to form a concrete wall or the desired thickness between said-wood form walls.

The process of securing the form walls by wire is comparatively slow and expensive and usually "it is with diiiiculty that the form walls are properly held and. maintained by the wires during the process of filling in the space between'said-walis with concrete. After the completion of the concrete work between the form walls, the wire ties render the work of removing the form walls somewhat difiicult. The lengths of tie wire passing across the space form walls ,are embedded in theconcrete and in actual practice it is diiiicult to break or cut the wire without marring the concrete work or leaving objectionable projecting wire lengths. v

It is an objectof my invention to provide fastening means for the form walls which can be produced at a low cost and which can be readily applied and easily adjusted to hold the forms to proper position and when so applied will not stretch and which will permit rapid and easy removal of the form sides after completion of the concrete damaging the conwall without marrlng or crete work. I

A further ob gect of my invention 18 to provide fastening or tle means for whatever purpose to which the same may be adapted and which can be produced at a low cost, and can be readily and easily applied to walls er the like, to hold them to proper pou sition, and which it so desired, can be readily removed in part. I

In the example illustrated by panying (llftwlllgj, is shown compris' body length 2, as band iron oi steel; two end stirrups or loops 3, at their cnds'secured as by rivets e, to the ends of the link or body 2; nuts 5, arranged within the loops or stirrups 3; and screws or suitable bolts 6, adapted to pass through the form walls, perforations "i, in the st'rrups, fined within the stirrups.

in the drawings, for the purpose of illustrating an application or my invention, 1 show a convenient construction and arrangement of wood form which can be employed to constitute the form or mold in which the concrete wall or other body is built up,

the accombetween the a wall tie or fastening mg a connectlng link or, usually of sheet metal such and into the nuts conion molded and confined and wherein the body of concrete is allowed to set until sufficiently hard to permit removal of the ivood work constituting the mold or form. l-lowevenl do not wish to limit my invention to use in connection with any particular construction or arrangement of form, structure. or other construction work.

The wood form shown. comprises the on posite plank walls 3, i' min'iing the space in which the concrete is deposited and tanuied and vertical and horizontal beains'or girders i}, 1.0, arranged at the outer side of the planking 8, and forming the supporting and strengthening backing and frame therefor.

in practice, eachlend stirrup 3, is usually bent up from hand or strap metal to term the outer end having the pertoration and constituting the nut receiving seat, and the inwardly extending legs which have their ends perforated and engaging opposite faces of an end or" the body length 2,

also perforated to receive the rivet 4-, se curing the stirrup ends to the body length so that the stirrup forms an encircling open loop to loosely receive a nut. The two stirrups virtually form extensions or continuatiens of the body length 2, projecting beyond the opposite ends thereof.

The fastener comprising the body length stirrups is in length less than the width of the mold, that is than the thickness of the concrete Wall or other body formed therein. Usually the flat outer ends are ar ranged say about an inch, more or less, from the adjacent inner fa es of the form Walls.

3 As the distances ,between different form Walls vary according to the thickness of the concrete bodies to be built, the body lengths 2, can be cut of ditiierent sizes to produce fasteners ofthe length. desired for any par-v ticular wall, so that bolts ofpractically the same length can be employed on approxi mately all Work and the stirrup ends will be spaced the desired distances from the inner surfaces of the form walls.

As the "form walls are built up, the fastening devices can be amplicdat the desired. points and spaced the desired distance apart to hold the walls up in the required positions. Each fastener forms the connection between a pair of bolts passed in opposite .crete passing tl'irough the stirrups and around the nuts. H: the' holes for-the bolts in the form sides should not be in alinemcnt, that. is it the opposite bolts are out of line,

as shown for instance in Fig. 1, the tie can angle or inclination between the end stirrups. W hen the concrete has set to the de sired extent in order to permit removal of the form walls, it is only necessary to unscrew the bolts from the nuts and withdraw the same outwardly from the form Walls. The form walls can be then quickly and easily ren'ioved from the concrete wall, leaving the fasteners embedded therein and acting as metal reinforcing elements for the coi'icrete. "When the bolts are Withdrawn they leave small holes extending through the concrete'to the stirrup ends, Whichholes, if so c esirec, can be easily and quickly filled or pointed. up.

These fasteners can be produced economically and used in connection with standard or stock nuts and bolts, and a material saving in cost of concrete work is efiected by the use of my invention notwithstan ding the :tact that the fasteners and nuts remain in the concrete Walls.

in Fig. 1 show the body length 20., and

the end stirrups 30, bent from a single length of bar or band iron or steel or other suitable metal; rivets 4.0, being provided. to secure the free ends of: the metal to the intermediate body portion.

It is evident that various changes and modifications might be resorted to Without departing from the spirit and scope of my invention and hence I do not wish to limit myself to the exact construction disclosed.

.ieans adapted to form securing con nection between temporary concrete-form walls, consisting in the combination of a pair of removable bolts adapted to extend inwardly through and secure opposite form walls, a pair of nuts for the inner ends of said bolts, connecting body length between said bolt ends and at its ends providedwvith concrete-receiving and nut-cn circling and seat forming loops in lon 'itndinal continuation of the body lengt lr and iii perforated for passage of said bolt ends to said nuts, said body length and its loops and the nuts adapted to remain embedded in the concrete structure, and said bolts adapted to be removed from the form Walls, the nuts and the concrete.

2. A concrete form fastener consisting essentially of pair of nuts, a pair 0i form wall holding headed bolts adapted to said nuts, a pair of laterally enlarged encircling nut-seatalorming and concrete-receiving riveted loops and a single straight connecting body length between and oining said loop u 0 I saidloops formed to receive, and llOllfLld iso of said bolts to and from said nuts. forming outer end wall adapted for, the free A concrete form fastener consisting of passage of a bolt to and from a nut 1n the a pair olt nuts, a pair of removable concrete loop and resting against said end Wall.

nuts and )erforated for the free )assane and conneciecl b a transverse nutsea,

5 form wall securing bolts, and a pair of nut- In testimony whereof I affix my signature, 1 i'ei-eiving and holding loops and a connectin presence of two Witnesses. ing body length between the loops, each HOWARD M. SHERWVGOD. loop being swingably joined to said body W'itnesses: length and liming diverging side walls in PRosPEn BULLABD,

' l Q 10 outward continuation oi the body length J. Amos HOUSE.

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