US662272A - Draw-in for wire-drawing machines. - Google Patents

Description

No. 662,272. Patented no). 20, I900.

.1. w. HAWKINS.

DRAW-IN FOB WIRE DB AWING MACHINES.

(Application med July 5, 1900. (No Model.) 3 Sheets-Sheet ll.

m: NORRYS PETERS co. PHGTG-UTHO WASHINGTON u. c.

No. 662,272. Patented NOV. 20, I900. J. W. HAWKINS.

DRAW-IN FOR WIRE DRAWING MACHINES.

(Application filed July 5, 1900.

a sheets-sheet 2.

(No Model.)

'mE nonms wzTzns co, FHOTQLITNOY, WASHINGTON, a c.

No. 002,272. Patented Nov. 20,1900.

J. W.HAWKINS. DRAW-IN FOB WIRE DRAWING MACHINES.

(Application filed July 5, 1900.)

3 Sheota-Sheet 3.

(No Model.)

W22 668 es:

UNITED STATES JOHN W. HAWKINS, OF OUYAHOGA FALLS, OHIO.

DRAW-IN FOR WIRE-DRAWING MACHINES.

SPECIFICATION forming part of Letters Patent N 0. 662,272, dated November 20, 1900.

Application filed July 5, 1900. Serial No. 22,564. lNo model.)

To (all whom it may concern.-

Be it known that I, JOHN W. HAWKINS, a citizen of the United States, residing at Guyahoga Falls,in the county of Summit and State of Ohio, have invented a certain new and useful Improvement in Draw-Ins for Wire-Drawin g Machines, of which the following is a specifioation.

My in vention has relation to improvements in that portion of wire-drawing apparatus the object and purpose of which is to grasp the wire as its reduced end passes through the die and draw it a sufficient distance to enable it to be secured in the clamping device of the winding-drum. The process has been usually performed by a vertically-rocking arm caused to oscillate lengthwise of the drawing-bench by the motive power of the machine, which bears at its free end grippers to seize the end of the wire and draw it forward through the die. Objection has been found to this mode of securing this preliminary movement, be cause the sudden jerk at the moment the strain commences tends to break the wire or pull the grippers away from it, and also because as the stroke of the oscillating arm is limited the grippers have to be released at the end of the stroke to return and secure a new hold farther back on the wire, thus requiring extra work by the operator and loss of time in the operation.

One of the objects of my invention is to provide a new and effective device by which the end of the wire may be grasped and the tension commenced and continued with a steady motion until sufficient wire has been drawn through the die to permit of it being fastened in the drum-clamp.

Its further object is to provide devices by which the operator may arrest the motion of the device at any desired point.

Another object is to cause the device to be self-arresting when it shall have reached the end of the bench by automatically throwing its driving mechanism out of gear, and a final object is to place the apparatus at all times more completely under the control of the operator.

To the aforesaid objects my invention consists in the peculiar and novel construction, arrangement, and combination of parts hereinafter described and then specificallypointed out in the claims, reference being had to the accompanying drawings, forming a part of this specification.

In the accompanying drawings, in which similar reference-numerals indicate like parts in the different views, Figure 1 is a portion of a wire-drawing bench provided with my improved draw-in; Fig. 2, a plan of a part of the same; Fig. 3, an end elevation of the same; Fig. 4, a plan, enlarged, of a part of the same with top plate removed to show the operative mechanism and in section at the line X X of Fig. 5; Fig. 5, a section, further enlarged, at the line Y Y of Fig. 4; Figs. 6 and 7, side and end elevations of the wormcarriage; and Figs. 8 and 9, inside and end views, respectively, of the bushing for the worm.

Referring to the figures, 1 is the wiredrawing bench, in which are journaled the drumshafts 2, each provided with a bevel-gear 3, driven by a bevel at on the main driving-shaft 5. Each shaft 2 bears one member 6 of a clutch arranged to engage an opposite member on each of the drums 7 when the latter is lowered. Each drum is raised and lowered by a fork 8, pivotally mounted in the bench, the double ends being arranged to engage and raise the drum when the opposite end is depressed, and this end is connected by a rod 9 with a lever 10, with one end pivoted in the bench and the other extending through a slot 11, faced with a plate and provided with a notch for the lever to enter and be retained when pressed down. Each drum 7 is provided with a clamp 12 to grasp the end of the wire, and adjacent to each drum is a dieholder 13.

Thus far the machine does not differ, essentially, from those in common use. The front upper beam of the bench is cut away lengthwise to form a channel, and in this is fitted a long trough-like box 14, of cast-iron, secured laterally by bolts 15, placed at suitable intervals and extending through the bench and secured by nuts and washers 16, one only of which bolts is shown by dotted lines in Fig. 3. This box is held vertically by bolts 17, that extend to the bottom of the bench and are similarly retained, as is also indicated by dotted lines in Fig. 3. This box is closed at the ends by plates integral therewith 5 but the top is open, the front edge being higher than the back, as appears in Fig. 5, and on this is fitted a cover 18, secured by bolts or screws. In the inner front of this box is an offset ledge 19 to form the lower face of a guide-channel, and on the lower face of the cover 18 is an oppositely-disposed flange 20, that forms the opposite face of the channel. (See Fig. 5.) Running longitudinally through the box 14 and journaled in suitable boxes at each end is a feather-shaft 21, hearing at its outer end a pulley 22, arranged to be driven by a belt 23 from a pulley 24 on the main shaft 5. Within the box 14-is a carriage (shown in side and end elevations in Figs. 6 and 7) which has at one side and toward the front of the machine a rib adapted to run in the guide channel formed by the ledge 19 and flange 20. This carriage is open at the back, and between its ends is a worm 27, fitted to slide on the feathershaft 21 and secured in the carriage at each end by boxes or bushings 58, (shown in Figs. 8 and 9,) which are conformed on the outside to fit corresponding seats in the ends of the carriage to prevent turning thereon.

At the back of the box 14 are a number of short ribs 28, that extend toward the center and are truly planed on top in a succession of steps, as shown in Fig. 5, to form seats for a longitudinally-sliding bar 34 and a laterallysliding rack 29. This rack is held against longitudinal movement by abutment-blocks 30, secured in the ends of the box 14. On top of the rack at intervals are projecting pins or bosses 31, and these rest in inclined slots 32 in a flange 33 of the sliding bar 34. The pins or bosses 31 bear upwardly against a flange 35 on the under side of the cover 18, and these hold the rack against rising. The sliding bar 34 has a ledge 36, that rests against the flange 35, thus securing it against displacement, and at the back has a short horizontal wrist-pin 37, that projects through a slot at the back of the box 14. The lower face of this bar 34 has a long rectangular channel opening from the front backward, as indicated in dotted lines in Fig. 5, for the rack to enter as it recedes, the rack being reduced on top between the pins or bosses 31 for that purpose. The carriage 25 has a flange 38, that projects through a slot 39 in the cover 18, and has a hole 40, in which is a bolt securing a chain 41, carrying at its outer end grippers 42 to seize the wire atthe die.

Through the upper front beam of the bench at convenient intervals and usually opposite each die-holder is a short shaft 43, provided at the front end with a lever 44, by which it may be rocked, and at the back with a short crank-arm 45, connected by a rod 46 with a Wrist-pin 37 on the sliding bar 34. At the right end of the box 14 is a pivoted lever 47, that extends with its free end resting on the flange 33 at the left of a boss or stud 48.

The operation of the machine is as follows: The shafts beingin motion, the operator rocks the handle-lever 44 to the left, which, through the mechanism just described, slides the bar 34 and flange 33 in the same direction, thus moving the rack 29 toward the front and into engagement with the worm 27, which immediately causes the carriage 25 to move to the right. The wire is then seized by the grip pers 42 and drawn steadily forward until long enough to be placed in the clamp 12 and the drum started. The operator may by means of the lever'44 throw the rack away from the worm; but if he neglects or forgets to do so and the carriage continues to advance it encounters the lever 47 and pushes it to the right, which by means of the stud 48 pushes the bar 34 and flange 33 in the same direction, thus drawing the rack out of engagement with the worm, when the carriage 25 is then pushed back to its original position at the left. The ends of the box 14 are cut out at the top, as indicated at the left of Fig. 4, to permit of the introduction of couplings and journal-box of the shaft 21, where it is desired to connect other machines to be operated simultaneously and by the same power.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

1. An improved draw-in for wire-drawing machines, consisting of a carriage arranged to move in the line of draftof the wire, having grippers to grasp the wire, a worm arranged to revolve in said carriage, means for revolving said worm, and a rack secured against longitudinal movement to be engaged by said worm to cause the advance of said carriage, substantially as shown and described.

2. An improved draw-in for wire-drawing machines consisting of a feathered shaft and means for causing its revolution, a carriage arranged to slide on said shaft having means for connecting wire-grippers therewith, and wire-grippers carried thereby, a worm in said carriage arranged to turn with said shaft, and a rack secured against longitudinal movement to be engaged by said worm, substantially as shown and described.

3. An improved draw-in for wire-drawing machines consisting of a feathered shaft and means for causing its revolution, a carriage arranged to travel along said shaft, having wire-grippers connected therewith, a worm located on said shaft within said carriage and arranged to move with said shaft, in combination with a rack adapted to mesh with said worm and arranged to be moved into and out of engagement with said worm, substantially as shown and described.

4. An improved draw-in for wire-drawing machines consisting of a feathered shaft and means for causing its revolution, a carriage arranged to travel along said shaft, having wire-grippers connected therewith, a worm mounted to revolve with and slide on said shaft in said carriage, in combination with a rack adapted to mesh in said worm, secured against longitudinal movement, and having projecting studs, and a longitudinally-sliding plate having inclined slots to receive said studs, and a device to slide said plate to cause said rack to approach and withdraw from said Worm, substantially as shown and described.

5. An improved draw-in for wire-drawing machines, consisting of a feathered shaft and movement of said plate to cause said rack to recede from said w0rm,substantial1y as shown and described.

6. The combination with a wire-drawing bench and a number of winding-drums mounted to run therein, of a continuous feathered shaft extending the length of said bench with a carriage mounted to slide on said shaft, a Worm mounted in said carriage and arranged to run with and slide on said shaft in combination with a rack to engage said worm,

and means for throwing it in and out of gear therewith, substantially as shown and described.

I11 testimony that I claim the above I hereunto set my hand in the presence of two subscribing witnesses.

JOHN W. HAWKINS.

In presence of C. P. HUMPHREY, G. E. HUMPHREY.

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