US717551A - Machine for forming twisted joints with wire. - Google Patents

Description

PATENTED JAN. 6, 1903.

G. M. DEPEW. MACHINE FOR FORMING TWISTED JOINTS WITH WIRE.

APPLIOATION FILED MAY 28, 1901. RENEWED JUNE 12, 1902.

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PATENTED JAN. 6, 1903.

G. M. DEPEW. MACHINE FOR FORMING TWISTED JDINTS WITH WIRE.

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m: I Q 9 APPLICATION FILED MAY 28, 1901 RENEWED 12, 1902.

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" NITED STATES PATENT OFFICE.

GEORGE M. DEPEW, OF OANANDAIGUA, NEW YORK, ASSIGNOR TO GEORGE V. WILLSON, OF PITTSBURG, PENNSYLVANIA.

MACHINE FOR FORMING TWISTED J OlNTS WITH WIRE.

SPECIFICATION forming part of Letters Patent No. 717,551, dated January 6, 1903. Application filed May 28, 1901. Renewed June 12, 1902. Serial No. 111327, (No model.)

To all whom it may concern:

Be it known that I, GEORGE M. DEPEW, a citizen of the United States of America, residing in the city of Oanandaigu a, in the county of Ontario, in the State of New York, have invented certain new and useful Improvements in Machines for Forming Twisted Joints with Wire, of which the following is a true and exact description, reference being had to to the accompanying drawings, which form a part thereof.

My invention relates to machinery for twisting the ends of wires together, and is especially adapted for twisting the two ends of the wire together in the formation of a wire hoop.

The object of my invention is to provide simple and efficient mechanism for the purposes above mentioned, and the nature of my improvements will be best understood as described in connection with the drawings in which they are illustrated, and in which Figure l is a plan View of my machine in what I believe to be its best form; Fig. 2, a

sectional elevation on the line 2 2 of Fig. 1; Fig. 3, a sectional elevation on the line 3 3 of Fig. 1; Fig. 4., a cross-sectional elevation on the line 4 4 of Fig. 2. Fig. 5 is aview showing the way in. which the wire ends are placed when inserted in the machine to be twisted together. Fig. 6 is an exaggerated view illustrating the nature of the twist or curvature which is preferably imparted to the wire before it is put in the joint-forming machine.

Fig. 7 represents the completed joint. Fig. 8 represents a wire hoop having its ends joined by twisting, and Fig. 9 is a view illustrating the mode of operation of the twisting mechanism and also some details of construction. a

to move into and out of engagement with the clutch member 19 guided on the shaft B.

72 indicates a stop-pin projecting from the face of the gear-wheel B and so arranged as to engage on the edge of the frame A when the gear-wheel B is uncoupled with the shaft and to clear said edge when it is coupled.

B indicates a bell crank lever for moving the wheel B and its clutch member, said lever q being actuated through a link B by a treadle B ,which is normally held to its upper position,

that in which the gear-wheel is disengaged with the clutch by theaction of a spring B C C are short shafts supported in the bearings A and having secured to them gearwheels 0 0, both engaged with the gearwheel B as shown'in Fig. 4. The ends of said shafts C have also secured to them the universal joints (indicated at C coupling the shaft G to the shaft C3, the outer ends of which last-mentioned shafts have their bearings in projections D of the swinging arms D and have attached to them miter-wheels 0 D D are swinging arms pivoted to the frame D D and having their outer free ends resting on the ridge A They have also attached to their inner ends toothed segments D D which are in engagement with each other and which cause all movements of the swinging 8o arms D on their pivots to be synchronous and in opposite directions, so that they are always equidistant from the center line. From the outer ends of the swinging arms D project the bearings D already mentioned, and also stud-bearin gs D having the cylindrical openings D for the studs slotted at top, as indicated at D.

1) indicates a spring acting to draw the arms D D together into the position shown in 0 Fig. 1.

E E are miter-wheels in engagement with the miter-wheels G C and attached to studbearings E E, turning in the slotted cylindrical bars D of the bearings D and formed with transverse slots extending past their centers, as indicated at E The inner faces of the slots are preferably drawn together and somewhat pointed, as indicated at e in Fig. 9, so as to engage in the spiral convolumo tions of the wire, as shown in said figure. The stud-bearings and wheels E are held in position on the bearings D by collars, as indicated at E E F indicates a bracket bolted on the center of the frame A between the swinging arms D D, having an upward extension forming a fixed jaw F of a gripping device and supporting a pivot F, on which is pivoted the moving jaw F of the gripping device, having a lever extension F which is connected by a link F with the treadle F normally held in its upper position by a spring F tending to keep the gripping-jaws apart, as shown in Fig. 2.

G, Figs. 5 to 9, inclusive, indicatesaspiral Wire hoop which, as shown in all of said fig- .ures except Fig. 6, is formed as though by winding the wire around a central line.

G G indicate the ends of the hoop, and G indicates the joint formed by twisting the joints together.

In operation the ends of the hoop are lapped and brought together, as shown in Fig. 5. The lapped portion is then inserted between the jaws F and F and into the slots in the studs E. The treadle F is depressed, causing the gripping-jaws to seize and hold the wires at the center, and the treadle I3 is then depressed, coupling the spur-wheel B with the driving-shaft B and causing the engaged gear-wheels C C to rotate in the same direction, this movement being imparted through the universal joints 0 to the shafts C O and their miter-wheels C and imparted to the miter-wheels E E and the grooved studs E E as rotative movement in opposite directions, as indicated in Fig. 9. The effect of this is that each rotating slotted stud twists and winds the free end of the wire around the body of the hoop, and as the grooves in the studs are practically in engagement with the twist of the wire the studs and the arms D D supporting them move gradually outward from the center line, following the twisting of the wire until the joint is completed, as shown in Fig. 7. The operator then permits the treadle B to rise, uncoupling the shaft B from the gear-wheel 13 the stop 6 of which arrests it and the parts coupled with it, including the slotted studs, as soon as they have reached the positions indicated in Figs. 1 and 2. At the same time the operator releases pressure on the treadle F, permitting the jaws F and F to move apart, so that the completed joint can be removed from the machine and a new wire placed therein.

Many features of my invention are, I believe, in themselves new, and I do not desire to be understood as limiting myself to the construction shown except where such limitation is clearly expressed in the claims.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a machine for twisting the ends of wires together, the combination of two bearing-blocks, movable to and from each other,

' with rotatable slotted studs, supported on and movable therewith, and means for rotating the studs in opposite directions.

2. In a machine for twisting the ends of wires together, the combination of two bearing-blocks, movable to and from each other, with constantly-acting means tending to hold the blocks together with yielding pressure, rotatable slotted studs supported on and movable therewith, and means for rotating the studs in opposite directions.

3. In a machine for twisting the ends of wires together, the combination of two bearing-blocks, movable to and from each other, with means regulating such movement so that said blocks are always relatively equidistant from a central point, rotatable slotted studs supported on and movable therewith, and means for rotating the studs in opposite directions.

4. In a machine for twisting the ends of wires together, the combination of two bearing-blocks, movable to and from each other, with means regulating such movement so that said blocks are always relatively equidistant from a central point, constantly-acting means tending to hold the blocks together with yielding pressure, rotatable slotted studs supported on and movable therewith, and means for rotating the studs in opposite directions.

5. In a machine for twisting the ends of wires together, the combination of two bearing-blocks, movable to and from each other, with a stationary wire-gripping device situated between said movable blocks, rotatable slotted studs supported on and movable therewith, and means for rotating the studs in opposite directions.

6. In a machine for twisting the ends of Wires together, the combination of the two arms, pivoted to the frame at one end and supporting bearing-blocks at their free ends, with slotted studs journaled in the blocks, means for synchronizing the movements of the arms, and means for rotating the slotted studs in opposite directions.

7. In a machine for twisting the ends of wires together, the combination of the two arms, pivoted to the frame at one end and supporting bearing-blocks at their free ends, with slotted studs journaled in the blocks, means for synchronizing the movements of the arms, a stationary wire-gripping device secured centrally between the free ends of the arms, and means for rotating the slotted studs in opposite directions.

8. In a machine for twisting the ends of wires together, the combination of two movable bearing-blocks, slotted studs journaled in said blocks, a constantly-driven shaft, means for rotating said studs in opposite directions, and a clutch for coupling and uncoupling said means with the constantlydriven shaft.

9. In a machine for twisting the ends of wires together, the combination of two movable bearing-blocks, slotted studs journaled IIO in said blocks, a constantly driven shaft, Wires together, the two rotatable slotted studs means'for rotating said studs in opposite di- E E having the inner edges 6 of their slots 10 reetions, a clutch for coupling and uneonpnerrowerthan the body of the slots.

ling said means with the constantly-driven shaft, and a. stop for arresting the studs in GEORGE DEPEW determined positions when the clutch is dis- I Witnesses: engaged. I A. J. KELLY, J12, 10. In a machine for twisting the ends of W. W. HEWITT.

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