US 1477766 A
Description (OCR text may contain errors)
l Puus TIE MEMBER FASTENING DEVICE Filed Aug. 19.1921 a Simms-smet 1 wwe , .ZJVVEVTOR @sa am Pa is 1W 72M, me )m Dek; rs 1923. www@ o. B. PULls TE MEMBER FAS'I-'ENING DEVICE Filed Aug. 19. 1921 Y 2 sheets-sheet 2 l @gg/viga if my' 1g 4v J3 JZ Z5 la J2 MENTOR @Scar Pu l 21S' 9 TTYS Patented Dec. i8, 1923..
OSCAR B. PULIS, OF MILEVAUKEE, XVISCONSIN,
ASSIGNOR TO METAL FORMS COR- PORATION, OF MILWAUKEE, WISCONSIN, A CORPORATION.
Application filed August 19, 1921.
T 0 all whom t may concern:
Be it known that I, OSCAR B. Puurs, citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of IVisconsin, have invented certain new and useful Improvements in Tie-Meur ber-Fastening Devices, of which the following is a specification.
The present invention relates in general to devices which are used in the erection and aligning of forms and molds such as are utilized in the construction of walls and other structures from concrete or other plastic material. v
Tie members of wire and the like are commonly utilized to connect and fasten different elements, and the object of this invention is to provide a novel device whereby the tie wires can be tightened and the ends thereof twisted together in a quick and effective manner and with considerable economy over the old way of tightening and twisting these wires.
In the erection of concrete forms tie wires of this character are used in diferent capacities,`being commonly employed to connect the opposite sides of a wall form, to prevent the said sides from spreading under the weight and lateral pressure of the concrete, and also to fasten intersecting bars or liners which may extend along the outer face of a form to holdl the different portions of the form in proper alignment, both horizontally and izertically7 and the present invention provides a most satisfactory means for simultaneously tightening the wires and twisting the ends thereof together; to hold the wires in position and fasten the ine-mbers with which the wires are in engagement.
Further objects of the invention are to provide a device of this character which is simple and inexpensive in its construction which is practically unbreakable and can be 'used repeatedly, and which in most instances can be removed from position as soon `as the tie wire has been tightened and twisted, thereby enabling the for twisting alarge number of tie wires and enabling the work to be done with a minimum amount of equipment.
For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in whichz-Y 'A i Figure 1 is a sectional view through a porsame device to be usedv Serial No. 493,606.
tion of a wall form or mold showing the manner of applying the device to the ends of the tie wires when tightening and twisting the same.
Figure 2 is an enlarged side elevation of one of the tie wire fastening devices.
Figure 3 is a top plan view thereof.
Figure et is a sectional view through one of the devices with the ends of the tie wire threaded through the same the outer ends of the tie wire being twisted prior to operating the device for the stretching and final twisting of the wire.
Figure 5 is a similar view showing the position of the parts after the device has been operated to stretch the tie wire and impart the final twist thereto. y
Figure 6 is a detail view showing the manner of utilizing the device for fastening a pair of alining bars at their point of inter'- section.
Figure 7 is a top plan view of ainodified form of the device.
Figure 8 is a longitudinal sectional view through the same.
Corresponding and like parts are referred to in the following` description and indicated in all of the views of the drawings by like reference characters.
In the erection of concrete walls and other structures the use of sectional metal forms has, in recent years, very largely superseded the use of wooden forms, for the reason that the metal forni units are interchangable so that they can be readily assembled in the different relations necessary to meet the many requirements of building construction, and the metal forms can be used time and time again for an almost unlimited period; for which reason they are more economical in the long run than the wooden forms, which can only be used once. For this reason the invention has been illustra-ted as used in connection with standard metal forms, although it will be understood that it is not restricted to such use, but can be employed in connection with any kind of concrete forms where wires yare used to tie or fasten different parts of the form together. Figurevl shows a fragmentary portion of a wall form each side of which comprises a series of superposed units A. These units are of rectangular shape and are each formed of a. sheet metal plate l, having anA anglediron reinforcement 2 extending around, the edges thereof. The units A are usually assembled in supcrposed horizontal rows and any conventional form of clamp or fastening device may be provided for securing the abutting edges of the units. This is all of the well known construction and no claim to novelty is based thereon.
Suitable spacing elements such as those Vindicated at 3 are interposed between the opposite sides of the wall form to hold the sides of the form the proper distance apartto provide for the desired thickness of wall. The opposite sides of the wall frame are also connected by tie wires il which, as indicated more clearly by Figures Lland 5, are threaded through suitable openings 5 in the form units fr, suitable openings being preferably provided in the edges of the units so that the tie wires will engage the angle iron reinforcements 2 and be looped around the outstanding flanges thereof. The ends of the wire at one side of the form are twisted together so that the opposite sides of the wall form are held in a close engagement with the spacers 3 and prevented from spreading under the weight and lateral pressure of the concrete.V
The device of the present invention provides an effective means whereby the projecting ends of these tie wires can be simultaneously tightened and twisted with greater speed and economy than has hitherto been possible. The tightening and twisting device comprises a foot 6 which is adapted to fit against and engage the concrete form,
and which 1s provided with an opening 7 through which the projecting ends of the tie wires 4t pass. The base of the foot 6 is slotted or bifurcated at S so that it will receive the reinforcing flanges of an abutting pair of units A and interlock therewith. The outer port-ion of the opening 7 is threaded at 9 for engagement with a. twisting head 10. This head is formed with a clearance space providing a twisting chamber 11, and also with a transverse wall or diaphragm 12 having spaced openings 13 for the reception of the two ends of the tie wire.
After the device has been initially placed in position with the extremeties of the tie wire threaded through the openings 13, the projecting ends of the wire are given an initial twist, as indicated at 14e on. Figure el. A wrench or like tool is then applied to the polygonal end 15 of the twisting head 10 and the later forcibly turned in* such a direction as to unscrew the twisting head from the foot 6. VThe twisting head is thereby moved bodily outward in such a manner as to place the tie wire under a strong tension and, at the same time, the portion of the tie wire in the twisting chamber 11 is given a final twist at 16 to hold the tie wire in proper engagement with the parts. The threads twist the wires.
9 are, of course, of the proper pitch to act in the desired manner to stretch the wire effectively.
Under most conditions the projecting ends of the Vtie wire, together with the intial twist 14 thereof, can new be clipped off or severed and the twisting device removed. This enables the sameV twisting device to be used for fastening a large number of tic wires and materially reduces the amount of equipment which is necessary for any particular job. The twisting head 10 is, of course, screwed into the foot before-it is applied to the next tie wire to be twisted, in order that it may be in proper position to tighten and twist thewire when it is screwed outwardly.
Another .oner of the many adaptations of the invention is shown by Figure 6 in which the device is illustrated as being utilized for securing the intersecting portions of a pair of liners 17 by meansv ofV a tie wire. These liners may be made either' of wood or metal and are at times applied to the outside of a large panel of the units A for the purpose of holding the said units in proper horizontal and vertical alignment with each other. The intersecting portions of the aligning bars 17 are shown as fastened by a wire 18 and the ends of t-he wire are given the nal pull and twist by the device of the invention. The base of the foot 6 is preferably serrated or formed with teeth, as indicated at 19, so that it will obtain a firm bearing upon a wooden liner or bar and interlock therewith so that it will not rotate when the twisting head is turned.
A modification is illustrated by Figures 7 and 8 in which the foot 6 has the same construction as that heretofore described, although the twisting head 10 has the cap 15a swiveled in position. The cap l5a is polygonal in shape so that it can be readily engaged by a wrench, and the base thereof lits in the rabbeted outer end of the opening through the twisting head. A retaining ring 20 which is removably held in position by any suitable fastening means such as the screw 21 engages a flange 22 on the cap 15 and holds the latter rotatably in position, thereby enabling the cap tobe rotated independently of the `member 10a. This enables an extra twist to be given to the wire after an initial turning of the combined members 10L and 15a to stretch and This extra twist of the wires give a solid final twist so that all possible looseness is takenup and the wires brought into a firm engagement with the forms. The member 10a has a polygonal outer end 10b which can be engaged by a wrench when it is desired to rotate the two members 1()a and 15L to both stretch and twist the wire. After the initial stretching 1 certain ways of and twisting the cap l5a is given an extra turn or two and a solid final twist thereby imparted to the wires. The necessary friction may be provided at the swivel joint to insure the desired action of the members. The extra twist which is possible with this modified form or" the invention insures a solid twisting of the wires, after which it is usually possible to sever or cut off the twisted portion 14- lof the wires and remove the tool.
While I have illustrated and described in detail only two of the many possible embodiments of the 'invention and shown using the same, it will be obvious that many changes and modifications can be made in the details of construction without departing from the spirit of the invention, and that the device will be found very useful in twisting and fastening the ends ot tie wires wherever the same are used in the erection and assembly oi molds and forms for concrete work.
Having thus described the invention, what I claim as new and desire to secure by Letters Patent is:
l. A tie fastening device of the character described, including a foot member having an opening therein through which the ends of the tie wire are passed and having the base thereof constructed for a detachable and interlocking engagement with the member against which it is placed, and a twisting head threaded in the opening` of the foot member and having a wall which is apertured to receive the ends of the tie wire preparatory to connecting the same with an initial twist, the inner end of the twisting head being received within the opening of the foot member while the outer end thereof has a polygonal portion adapted to be engaged by a separate tool for forcibly rotating the head.
2. A tie wire fastening device oit the character described, including a foot member adapted to bear against the form, a stretching and twisting head threaded upon the foot member, and a wire engaging element carried by the stretching and twisting head and rotatable independently thereof to twist the wire without additionally stretching the same.
3. A tie wire fastening device of the character described, including a foot member having an opening therein, a Sleeve threaded in the opening, and a wire engaging element carried by the sleeve and rot-atable independently of the sleeve, whereby theI wire is both stretched and twisted when the twisting head and said element are rot'ated in unison and is twisted without being additionally stretched when the wire engaging element is rotated independently of the sleeve.
el. A tie wire fastening device of the character described, including a foot member adapted to engage the form, and having an opening therein, a sleeve threaded in the opening, and a wire engaging cap member swiveled upon the sleeve so that it can be rotated independently thereof, the wire being both stretched and twisted when the sleeve and cap member are rotated together and being twisted without being additionally stretched when the cap member is rotated independently of the sleeve.
5. A tie wire fastening device of the character described, including a foot member adapted to engage the form, a wire stretching member threaded upon the foot member, and a wire engaging element swiveled upon the stretching member and having a frictional connection there-with, the wire being both stretched and twisted when the stretching member and wire engaging element are rotated in unison and being twisted without being additionally stretched when the wire engaging element is rotated independently of the stretching member.
In testimony whereof I aiiix my signature.
OSCAR B. PULIS.