US2133887A

US2133887A - Wire tightener and twister

Info

Publication number: US2133887A
Application number: US179777A
Authority: US
Inventors: Roy R Beers
Original assignee: WALTER J THALHEIMER
Current assignee: WALTER J THALHEIMER
Priority date: 1937-12-14
Filing date: 1937-12-14
Publication date: 1938-10-18
Anticipated expiration: 1955-10-18

Description

Oct. 18, 1938.

a 5\ su? N.: E?

l A IE\IQ R. R. BEI-:Rs 2,133,887.

WIRE TIGHTENER AND TWSTER Filed Dec. 14, 1957 j @y gage/1.9

INVENTOR ATTORNEYS Patented Oct. 18, 1938,

WIRE TIGBTENEB AND TWISTED BoylLBeeraPh Aris., assi/gnor ot one-half Oenix, Al'il.

oenix, to welter J. Tnuheimer, rh Application December 14, 1937. Serial No 179,777 z chime. (ci. 14o-1m 'I'his invention relates to wire tighteners and twisters oi' that general type described in my allowed application of the same title iiled June 14, 1937, Serial No. 148,208.

5, An object of the present invention is to provide a wire. tightener and twister having guide bars reinforced against breakage, the guide bars being equipped with novel spurs and pins for eiecting a quick attachment of the bale wires to the bars prior to stretching and twisting the wires.

A further object of the invention is to provide a novel ratchet latch which works in a longitudinal groove in a jack screw, the groove having one side beveled to permit ratchet action so.

v that the Jack screw may be rotated continuously to s'peed up the stretching and twisting operation.

A further object is to provide a device o! this 2o character which will be formed of a few strong.

simple and durable parts, which will be inexpensive to manufacture, and which will not easily vget out of order. l With the above and other objects in view the invention consists of certain novel details of construction and combinations of parts hereinalter iully described and claimed, it being understood that various modiiications may be resorted to within the scope of the appended claims without departing from the .spirit or sacrificing any oi' the advantages oi the invention.

In the accompanying drawing forming part of this speciilcation.

Figure 1 is a longitudinal sectional view of a wire tightener and twister constructed in accordance with the invention.

Figure 2 is a side elevation ot the wire tightener and twister with parts broken away.

Figure 3 is a front elevation of the tool. e Figure 4 is a cross sectional view taken on the line 4 4 of Figure 2 showing the longitudinal groove in the jack screw with one wall beveled.

Referring now to the drawing in which like characters oi' reference designate similar parts in the various views, il designates a cylindrical body provided with internal screw threads lIl at its rear end. A cylindrical nose piece i2 is screw threadedly engaged on a reduced exteriorly threaded front, end I3 of the body, and is provided with a substantially conical point Il adapted to be placed againstthe concrete form Il,

for example, which is to be tied by binder wires it. Thenose piece i2 is provided on the iront endoiitside of the point with guide grooves Il,

best shown in mure s, to receive the wires is and conduct the same to guide lugs I l.

The guide lugs il are disposed at diametrically yopposite points on the wall oi the nose piece and engage and hold a respective end portion 5 yof the bindervwires so that when the body lil` is rotated axially. a twist il will be made in the wire after the wire is tensioned by operation of the tool, as will presently be described.

'me body il is provided rearwardly of said l0 lugs with longitudinally extending guide tubes 20 which are slotted longitudinally as shown at 2l in Figure 2. Flat bars 22 are slidably mounted in the guide tubes and projectthrough the slots, as best shown in Figure l. The bars are conl5 nected together at the rear end of the body by a bearing 23. 'I'he bars are provided at their front ends with oppositely disposed spurs 24 between which and the body the ends of the binder wire are reversely bent and then wrapped about pins 20 25 which are formed integral withthe spurs and terminate in retaining knobs 26 which prevent escape of the wire.

The spurs 24 permit ofthe binder wire being quickly applied and a crimp formed therein so 25 that accidental dislodgment oi' the .wires is reduced to a minimum.

A Jack screw 2l is mounted in the body and is provided with a cylindrical'shank 28 which loosely tits in the bearing 23 and is provided 30 terminally with wrench faces 29 which are adapted to receive a conventional brace. The Jack screw engages the threads ii at the rear end o1' the body Il and is a lei't hand screw adapted to e tighten the wire to proper tension around the 35 form I5 before' the twisting operation.

A collar 3l is mounted on/the shank at the rear end oi.' the lack screw and contacts with the front side oi the bearing 23, and a collar 3i is secured to the shank by a set screw 32 and 40 contacts with the rear side ofthe bearing to establish a swivel connection between the jack screw and the bearing. When the Jack screw is rotated in a direction to be backed out of the tubular body the collar 3l carries the bearing 45 23 rearwardly. The bars 22 andv spurs 24 move as a unit rearwardly with the bearing and tighten the wire, the guide bars sliding rearwardly in the guide tubes during this operation.

The jack screw is provided with a longitudi- 5o nal groove 33 one wail of which is beveled as shown at 34 in Figure 4. The-groove receives the lip Il ot a latch QI, .which is pivoted between hinge ears I1 on the bodyy il, as shown at 3l' in Figure 2. .'lhe latch is provided with a handle 55 3l. Aspring "isiixedatoneendtothe body by a screw Il and bears-with its free end against the latch to normally hold the lip' lodged in the groove of the jack screw. During tensioning of the wire as above described the lip 3l of the latch slips over the beveled wall 3l of the groove in the jack screw with a ratchet action so that the wire may be quickly stretched taut. When it is desired to form a twist in the wire the jack screw is rotated in the opposite direction, the lip in this instance bearing against the opposite wall of the groove and locks the body to rotate as a unit with the jack screw..

' Since the operation of the device has been de-V scribed as the description of the parts progressed it is thought that the invention will be fully understood without further explanation.

What is claimed is:

l. A wire tightener and twister comprising a 20 tubular body provided internally with screw threads, a pointed nose piece on the front end of the body, oppositely disposed guide lugs on the I. nose piece, guide tubes extending longitudinally 35 the body, a shank integral with the jack screw projecting through said bearing member, means on the jack screw for locking the jack screw against rotation with respect to said body for forming a twist in said binding wires when the jack screw is rotated, and means actuated by the jack screw and engaging said bearing member for feeding said bearing member in a retrograde direction when said locking means is released to stretch said binding wires preparatory to twisting.

2. A wire tightener and twister comprising a tubular body provided internally with screw threads, a pointed nose piece mounted on the front end oi the body, guide lugs projecting laterally from the nose piece, guide bars slidably mounted on the body to move toward andaway from the guide lugs, a bearing member connecting the rear ends of the guide bars, 'means for securing the ends of binding wires to said guide bars remote from said bearing member, a jack screw in the body engaging said internal threads o! the body, a stem for the jack screw swivelly mounted in said bearing member, there being a longitudinal slot in said Jack screw having one wall beveled, a pivoted latch on said body projecting through said body into said slot, a. spring holding said latch normally engaged in said slot in the jack screw, rotation of said jack screw in one direction permitting the latch to slip over said beveled' wall with a ratchet action, and means actuated by the jack screw for engaging said bearing member for feeding the bearing member and rod in a retrograde direction when said latch is acting as a ratchet to stretch said binding wire preparatory to twisting, said latch engagingthe other wall of the slot in the jack screw when the direction of rotation of the jack screw is reversed and lochng the jack screw and body to rotate as.a unit to form a twist in said binding wires.

ROY R. BEERS.