US1913326A

US1913326A - Combined form spreader and tie

Info

Publication number: US1913326A
Application number: US455331A
Authority: US
Inventors: Samuel C Awbrey
Original assignee: ETHEL AWBREY
Current assignee: ETHEL AWBREY
Priority date: 1930-05-24
Filing date: 1930-05-24
Publication date: 1933-06-06
Anticipated expiration: 1950-06-06

Description

June 6.1933. s. C. AWBRE Y 1,913,326

doMBINEp'FoRM SPREADER AND TIE Filed May 24, 1930 INVENTOR, Jaw/(16V 6f flzan y.

A TTORNEYS.

. Patented June 6, 1933 'sAMnnIJ eAwnnnY, on Kansas errmnrrssounr, Assreivon r N 1 KANSAS CITY, ivrrssonar i PATENT OFFICE COMBINED Foam srnnannn ANDITIE Application filed May 24,

tain thewalls of the form in their properly spaced relation during the building of the same and while the concrete is being poured. It isknown in this art that form tie s and Spreaders must presentstrength enough to i k moval of the form walls after. th

concrete hasset. There is always a projected his maintain the form. walls in proper relative position, yet must be designed to permit of head which-must be entirely removed or broken away from. the body portion of the tieand spreader. and it is an object of this inventionto provide a formofconstruction which will permit of quick and easy removal of the head. i i

The primary object of this invention is to providea form tie and spreader which is in.- expensive to manufacture, efficient in its operation and unlikely to cause injury to. the

concrete wall through the attraction of moisture after the same has served its purpose as a support for the form used in pouringthe wall. 1 i

Another Object of this invention is the provision of a new article of manufacture espewas.

cially adapted for useas a form tie and spreader that is provided with a plurality of key engaging slots, one ofwhich slots extends inwardly to terminate in a transverse opening which serves as a trap for water or moisture and precludes the same from entering thewall further-than said opening which is filled with concrete when the wall is poured.

. Another object of the invention is the contemplation of attic and form spreader having a head at each end thereof provided with a corner notch which permits of cutting the tie from material with the ends of, adjacent ties in overlapped relation.

An even further objectof theinvention is the provision of a tie and spreader for concrete forms which is maintainedin combination therewith through the use of a novelly constructed specially formed key which presents a form engaging edge of equalefiect 1930. Serial No. 455,331. 1

forth atthis point, but will be made clear throughout the detailed specification referring to theaccoinpanying drawing wherein Figure 1 is a perspective view of a form tie and spreader embodying thefnovelfeatures, contemplated by this invention. I r F ig. 2 is a reduced fragmentary vertical section through the opposing walls of a concrete form showing the tie and spreaderin the operative position. j r Fig. 3 is an enlarged fragmentary detailed view along the face of one end of thetie and spreader, key removed.

Fig. {1 is a perspective view of the specially formed key which may be used with the tie and spreader. j p Q Fig. 5 is a fragmentary vertical cross section through the tie and spreader positioned with thewall form, and, r i i Fig. I ,6. is r a fragmentary view. of one end of a modified formof the tie and spreader.

Like reference characters refer to similar tinct portions. The body 14 is stiffened through the use of an embossed rib or bead 16 which extendslongitudinally of plate 12 along the bodyportion 14 thereof. At each end of the plate 12 is formed a wall engaging head 18 which is connected to body 142 by the neck 20. Apair of spaced apart lugs 22 are struck from plate 12 and projectedtherefrom in aplane extending transversely to the plate to opposite sides thereof as shown in the drawing. Striking lugs 22 from plates 12c1'eates the neck 20 which should be formed as clearly shown in Fig. 3 withits outer edges converging as the head 18 is approached. Thus neck 20 will be narrower at the end joined by head 18 than where it is joined by body 14. Lugs 22 project substantially perpendicularly to plate 12 and, obviously their inner edges will be angled in conformity with the angle of convergency of neck 20. Lugs 22 are disposed in substantially the 2 same plane and bear against the inner sides of walls 8 when the tie and spreader is in position.

A centrally positioned longitudinally extending slot 24 is formed in plate 12 to exrious thicknesses.

tend across neck and into head and

body

18 and 14 respectively. This slot 24 intersects the plane of lugs 22 and terminates in communication with transverse slot '26 which may be arcuate as illustrated in the drawing and which should project toward the opposite edges of plate 14 to terminate beyond the adjacent edges of lugs 22. When the tie and spreader is inposition the end of slot'24 lying in head 18-is beyond the outer surface of the wall 8 tope'rmit insertion of the hereinafter described key; A hole 28 should be pierced in the position shown to receive a nail'or similar fastening means not here shown when the tie and spreader is positioned at the top of the form walls 8.

v A slot 30 formed in head 18 between one edge thereof and slot 24, yet not in overlapped relation therewith, allows the tie and spread er to be used with forms having walls of va- A corner notch 32 is cut into the head 18 to extend inwardly thereof from its end and one side to a point beyond slot 30. An angled side 34 of corner notch '32 intersects lines projected longitudinally 26 from the central slot 24 and meets the transverse edge'36 of corner notch 32 as illustrated in Fig.3. It is notable that the adjacent ends of

slot

24 and 30 and the edge 36 of corner notch 32 all lie in substantially the same plane which extends transversely of the head 18. The corner notch 32 at one end of plate 12 is diagonally opposite the corner notch 32 formed in the other end thereof. Thus when the tie and spreader is being manufactured from stock of constant width there is an overlap which presents an appreciable saving in a manner which in no way a flects the efliciency and strength of the device.

In combining the tie and spreader above described with the concrete form having walls 8, it is desirable to provide a. quickly positioned key 38 which may be made as shown in Fig. 4. The edge 40 of key 38 lies in a straight continuous plane to rest against the outer face of the form wall 8. A shoul- '65 proached from shoulder 42.

need not lose time by concerning himself as to which end should enter

slot

24 or 30 as the case may be. Likewise, key 38 may be efficiently cut from stock without waste.

The faces of the concrete wall 10 should be smooth after the form has been removed. Walls 8 are loosened merely by dislodging keys 38, which may be used again, and when walls 8 have been removed the heads 18 are broken away by severing the plate 14 at the narrowest part of neck 20.

The advantage of the construction described is obvious. The relation of slots and lugs renders the breaking off of the head 18 exceptionally easy and since the lugs 22 come off with head 18, it is plain to be seen that the only portion of the plate 14 forming the tie and spreader that is exposed is the ends of the two portions forming the neck 20. As shown in Fig. 3, lugs 22 form cavities in the wall 10 after the concrete has set which, after the lugs and head have been removed, may be filled with concrete to seal the wall and render it impervious to moisture. The transverse slot 26 and a portion of slot 24 is filled with concrete whenthe Wall is being poured and in the event moisture attempts to work a way inwardly or outwardly along the plate left therein, it will be trapped by the various off-sets presented at the end of the plate embedded in the concrete wall 10.

Manifestly, the tie and spreader shown and described is susceptible of being formed in many ways. For example, the modification shown in Fig. 6 might be followed. The only difference between the preferred and this modified form being that the lugs 22 are struck from the plate 14 to communicate directly with the sides of longitudinal slot 24 rather than to lie adjacent to the edges of the device. The portion to be severed when removing the head remains the same size and the efliciency of the tie and spreader is not changed.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. A form tie and spreader comprising an elongated 'plate,'a plurality of spaced-apart lugs projecting from the plate in a plane transverse to the same, a longitudinal slot formed through the plate intersecting the plane of said lugs and a transverse slot through the plate at the inner end of the longitudinal slot and joined thereby.

2. A form tie and spreader comprising an elongated plate, a pair of spaced-apart lugs projecting from'the plate in a plane transverse to the same adjacent each end respec tively thereof, a longitudinal slot formed through the plate extending between said lugs and intersecting the plane thereof and a transverse slot through the plate at the inner end of the longitudinal slot, joined thereby and extending outwardly therefrom toward the edges of the plate to pointsbeyond the adjacent edges of said lugs.

3. A form tie and spreader comprising an elongated plate having a wall engaging head at each end thereof joined by a ribbed body, a neck between each head and the body respectively, a central longitudinal slot formed through the plate and across the neck and extending into the head and body of the plate and an arcuate transverse slot formed through said plate and joined by the longitudinal slot at its inner end.

4. A formtie and spreader comprising an through said plate and across the neck and 7 extending into the head and body of the plate and a transverse slot joined by the 1011- gitudinal slot at its inner end.

In testimony whereof, I hereunto aflix my signature.

SAMUEL C. AWBREY.