US1224810A

US1224810A - Form-holder and wall-tie.

Info

Publication number: US1224810A
Authority: US
Inventors: Herman G Tenholder
Original assignee: GEO W SMYTH LUMBER Co
Current assignee: GEO W SMYTH LUMBER Co
Priority date: 1916-11-20
Filing date: 1916-11-20
Publication date: 1917-05-01
Anticipated expiration: 1934-05-01

Description

H. G.TENHOLDER.

FORM HOLDER AND WALL TIE.

APPLICATION FILED NOV. 20. I916.

Patented May 1, 1917.

f I G. TENHOLDER, OF BEAUMONT, TEXAS, ASSIGNOR OF ONE-HALF TO GEO, SMYTH LUMBER COMPANY, OF BEAUMONT, TEXAS, A CORPORATION OF TEXAS.

roam-nouns AND want-rm.

To all whom it may concern:

Be it known that I, HERMAN G. TEN- HOLDER, a citizen of the United States, residing at Beaumont,'in the county of Jefferson and State of Texas, have invented certain new and useful Improvements in This invention relates to building .con-

struction, and particularly to a form holder and wall tie for use in the construction ofconcrete or other plastic formed Wall structures in which temporary molds or forms are employed to receive the plastic material which is subsequently permitted to set and harden to form the finished wall or cast.

It is one of the objects of the present 'invention to provide a form holder and wall tie which may be manufactured in large quantities and thus at relatively small ex-' pense, and which is capable of being readily used in the tem orary erection of sectional demountable orm structures or mold boards.

It is a further object of the present invention to provide a form holder and wall tie which may be generally distributed among builders supply stores or dealers, and carried by them in stock in various sizes as will be determined by the nature of the structure, and further to provide a form holder and wall tie which may be e'fiicientl and readily applied at any desired position in the form structure being erected without having definite or fixed co-active positions with the other structural elements except to accomplish its urpose of holdin the mold sections or mem ers in the desire assembled relation.

A further object of the present invention is to provide a unitary form holder and wall tie especially capable of use in the erection of double wall forms or molds and which provides for the ready removal of the projecting portions whichhave served to carry the outside wall forming molds during their service. To' the accomplishment of these and other objects, as will be apparent to those skilled in the art, the present invention consists in an integral form holder and wall tie in the form of a bar which may be Specification of Letters Patent.

Patented May ti, iaia.

Application filed November 20, 1918. Serial No. 132,418.

of suitable material, such for instance as cast iron, etc., having formed upon its length transverse-seats in which may be arranged the edges of the concrete forms or molds-which are to be sustained and which tie is provided at its, ends with retaining heads or shoulders, these being connected by a contracted neck portion to the inner or main body portion of the tie so that after the service of the tie these heads or outwardly projecting shoulders may be removed by striking them a blow and causing the fracture of the neck, the latter preferably being formed by inwardly convergent notches the roots of which lie substantially in the plane of one side of the outer seat at each end of the tie so as to produce a fracture which will be substantially flush with the surface of the cast wall.

In the following specification and the accompanying drawings a preferred form of the invention is described and illustrated in which the wall tie and form holder consists of a cast integral bar, and in the drawin s:

Figure 1 is a perspective view showing the form holder and wall tie as applied in the erection of the form and the construction of a hollow wall.

Fig. 2 is a side elevation of one of the ties, and

Fig. 3 is a bottom plan view of the same.

Heretofore in my knowledge temporary or false work forms or molds used in the erection of-concrete structures have generally involved a complex set of reinforcing ties, clips, braces, and other associated members usually requiring expert care in the assembling, and being of limited use and arrangement in the construction of, the molds in practice. By my present invention it is intended to provide a simple and substan'tial form of form holder and wall tie which ma be universally? applied to the erection o hollow or solid walls in the erection of which there are employed mold boards or mold sections which are indicated at 2, Fig. 1, in the construction of the hollow wall 3. These mold boards or sections 2 are usually of a given length, thickness and height, and preferably are to be used repeate ly in the construction of the wall 3 by removing the lower mold members 2 from the lower portion of the wallafter this has solidified and re lacing them at higher points in the mol structure. My

present invention contemplates the use of out the mold structure and is illustrated in tits-preferred embodiment here as consisting "of a bar 5 of suitable length and width an thickness as may be-determined by the size of the wall and mold structure with which it is to be used. The bar 5 may be provided along each of its sides, or along opposite sides, or along only one side as 1s shown in Fig.2, witha series of seats 6 disposed transversely of the bar 5, these seats in this instance being formed u on the lower side of the bar 5 by downward y projectin ears or flange-like portions 7, the inner or a jacent surfaces 8 of which form 'the side retainin'gmeans between which the edge of a mold section 2 may be inserted, it being understood that the width of the seats 6 are determined by the thickness of the mold section.

In the construction of hollow walls it will be understood that the inner mold board members 1010 will be assembled between the inner pair of seats 6-6 and the outer mold board members 2 will be engaged and supported by the seats 6-6 at the ends of the tie.

In practice the

mold sections

2 and 10 are built up from a suitable foundation structure and at suitable points throu bout the mold or form the bars 5 are p aced transversely across the top edges of the form sections or mold boards so as to substantially engage and reinforce or brace the mold sections-throughout the course, and

superposed sections are laid upon one another to the desired hei ht, each of which is supported and brace b the insertion of the form holders througout the struc-" ture.

It is desirable, after the concrete forming the wall structure 3 has solidified, that the endmost seat portions 66 of the bar may be removed and to that end the outer end of each bar, which is provided with a headlike piece 9-9, is preferably broken away,

.the bar being so formed that the fracture of the breakwill preferably occur at the planeof the inner wall 8--8 of each form older or tie. In the embodiment of the inventionwhich I prefer the ends or heads 99 are of substantially pyramidal form with the apexes of the pyramids being 00-- incident w1th the major axis of the bar 5, it being understood that the u, per and inner portion 9' of each of the eads 9 thus serves to support the lower outer edge or corner of each of the superposed sections of the

molds

2 and 10. After the concrete has hardened the heads 9 are struck a light blow and this will cause a fracture of the projecting ends of the bar 5 exposed b the removal of the mold sections 2 an 10. Preferably the line of fracture. is caused to ,sistingpf a casting having a series of form occur as near as possible to the flush outer surface of the wall 3, and one manner of achieving this line of fracture is to reduce the diameter of the bar 5 adjacent each end so that the line of least strength of the bar is produced at the point 11 which is substantially in the plane of the outer face of the shoulder 7 of the bar 5 as seen in Fig. 2.

The, neck at each end of the bar is therefore preferably formed by an inwardly convergent angular notch 12 having shoulder 13 perpendicular to the length of the bar and in the same plane as the surface 8 of the inner shoulder 7-7 of the bar. From this construction it will be seen that in almost every instance after the

mold sections

2 and 10 have served their purpose and been removed from the form structure, the exposed head portions 9 at each end of the bar may be broken OE and the line of fracture will be produced at the line 1111 in the plane 13 of the notched ends of the bar. By this form of form holder and wall tie the wall structure may be erected rapidly and eco- 9o nomically and the tie will lie flush with the form or wall and will securely hold the sections during. erection, and will prevent them from slip mg, and will hold them in true vertical a mement during the pouring of the concrete. The bar is of such form as to be substantial and economical in weight, and thus enables its manufacture and shipment I at low cost.

,and the air space left between the walls,

and for the different size forms, as occasion may require, and will be of such roportions as to meet the requirements of a l compressive and tensile strains and thus provide for the eflicient interiorbracin of hollow wall structure such as is here in icated, althou h it is to be understood that the clip may e as efiiciently used in solid wall structure.

What is claimed as new is:

1. A form holder and hollow wall tie conseats sposed transversely in its length and having a tapering head at each end connetted to the bar at reduced frangible neck portions, andlugs opposed to the bases of said heads at-the ends of the reduced necks.

2. A form holder and hollow wall tie consisting of a unitary bar having a series of form seats disposed transversely in its length and having a pyramidal head at each end connected at the bases to the bar by reduced. frangible neck portions which are coincident with the end seats, the bases of the heads projecting above and below the faces of the bar.

3. Alconcrete form holder and wall tie consisting ofa her having on one face, near each end, projecting shoulders forming seats for mold sections, outwardly tapering heads at the ends of the bar the bases of which project above and below the faces of the bar to a wall tie having on one face seats between transverse lugs for mold sections and notched at its opposite edges to form fracture lines coincldent with certainfaces of the seats, and between the lugs.

5. An integral mold or form holder and wall tie having adjacent its ends pairs of shoulders, each pair forming therebetween a seat, and the sides of said seats having angular notches forming weakened planes in the body coincident with the inner shoulder of the end seats. o

6. A mold and wall tie consisting of a relatively flat body having on one face pairs of lugs extending from edge to edge and forming transverse mold section seats, and its opposite face having transverse end lugs,

from edge to edge, the inner faces of which form rests. I

7. A mold and wall tie consisting of a relatively flat body having on one face pairs of lugs forming continuous transverse mold section seats or channels, and its opposite face having continuous transverse end lugs, the inner faces of which form rests, the edges of the bar between said end lugs and the next adjacent lug being oppositely notched to form weakened areas coincident to the end seats.

8. An integral mold and wall tie consisting of a relatively fiat body having on one face pairs of lugs forming transverse mold section seats, and its opposite face having transverse lugs, the inner faces of which form rests, the opposite edges of the bar being notched between the end and inner lugs to form weakened areas coincident to the end seats, and the inner walls of the notches being alined with faces of adjacent lugs.

In testimony whereof I aifix my signature in presence of two witnesses.

mRMAN G. TENHOLDER.