US981335A - Safety device for die-holders. - Google Patents

Description

-0. W. VAUGHN. SAFETY DEVICE FOR DIE HOLDERS.

APPLICATION FILED SEPT. 21, 1908.

981,335. Patented Jan.10,1911.

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UNIT SAT CALVIN W. VAUGHN, OF CUYAI-IOGA FALLS, OHIO.

SAFETY DEVICE FOR DIE-HOLDERS.

Specification of Letters Patent.

Application filed September 21, 1908.

To all whom it may concern:

Be it known that I, CALVIN IV. VAUGHN, a citizen of the United States, and a resident of Ouyahoga Falls, county of Summit, and State of Ohio, have invented a new and useful Improvement in Safety Devices for Die- Holders, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

This invention relates to apparatus for drawing wire, and has particular regard to the provision of a safety device for use in connection with the drawing block whereby danger of an employee or other person becoming entangled in the wire, and being thereby dragged into the machinery, is practically eleminated. The device obviously will be equally adapted to prevent a wire entangling and carrying into the machine any other objects that might work disaster there.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in claims.

The annexed drawing and the following description set forth in detail certain mech anism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings :Figure 1 is a side elevation, with a portion broken away, of my improved safety device for dieholders; Fig. 2 is a plan view of the same, a portion again being broken away in order better to reveal certain details of the interior construction; and Fig. 3 is an elevation of the opposite side from that shown in Fig. 1, also with a portion broken away.

My safety device, chiefly for reasons of convenience in construction, is shown in its approved form as incorporated in the same structure with the die-holder. Such holder in the case in hand, comprises an integral casting A, in one end of which is provided a transverse aperture or recess a of proper size to receive the die-block A For the purpose of retaining the block in place in the housing a suitable set bolt a is provided on its upper face. Pivotally support-ed in said housing transversely of the same, and one rammed Jan. 10, 1911.

Serial No. 454,078.

above, the other below the line of the wire being drawn through the die, are two short shafts (4 upon which are rigidly mounted cutters a of the form clearly shown in Fig. 1. These cutters in their normal open position (shown in full lines in Fig. 1), permit the free passage therebetween of the wire B; upon proper actuation, however of their respective shafts, they are swung inwardly and are then adapted to close upon the wire so as to sever the same, the movement of the wire assisting in this operation as will be obvious.

Actuation of the cutter shafts a to effect the foregoing operation is designed to be had from a recurved lever, A pivot-ally attached to the forward end of the housing A on a transverse axis, so as to partially inclose the wire B, the latter passing between its respective side portions. Slidably mount ed within a suitable cap A secured to one side of the housing, is a bar a that is pivotally attached at its outer end to said lever A, while its inner end is formed with rack teeth a that respectively engage pinions a on the corresponding ends of the two cutter shafts. Oscillation of the lever toward the housing, it will accordingly be seen, will serve to simultaneously actuate these shafts to swing the cutters a inwardly in the manner previously described. Such inward movement of the rack-bar, or slide, is limited by contact of the edges of the cutters, whereby the wire is severed, while the bars outward movement is similarly limited by engagement of a pin a on its outer face adapt ed to engage an off-set, or shoulder, a on the inner face of cap A From the foregoing description of the construction of my improved die-holder, the mode of operation thereof should be readily apparent. Should an employee, or any other object, become entangled in the wire, as frequently occurs in wire mills, and be drawn toward the die, he or it must of necessity come in contact with the lever A and force the same toward the housing with the result that the wire is promptly severed and injury to the employee, and damage to the machine, both avoided.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any one of the following claims or the equivalent of such stated means be employed. 7

I therefore particularly point out and distinctly claim as my invention 1. In a device of the character described, the combination of a housing in line with the Wire being drawn for the reception and retention of the die, cutters pivotally supported in said housing on opposite sides of such wire and adapted on being swung together to sever the same, a lever pivotally attached to said housing, and a slide pivotally connected at one end with said lever and having geared connection at the other with said cutters.

2. In a device of the character described, the combination of a housing in line with the wire being drawn for the reception and retention of the die, two transverse rotatable shafts arranged on opposite sides of the wire, cutting members respectively attached to said shafts, a pinion on the end of each shaft, a slide provided with rack teeth meshing with'said pinions, and a lever pivotally attached to said housing and pivotally connected with said slide.

3. In a device of the character described, the combination of a housing in line with the wire being drawn for the reception and retention of the die, two transverse rotatable shafts arranged on opposite sides of the wire, cutting members respectively attached to said shaft-s, a pinion on the end of each shaft, a slide provided with rack teeth meshing with said pinions, a lever pivotally attached to said housing and pivotally connected with said slide, a shoulder provided in said housing, and a pin borne by the slide and adapted to engage said shoulder.

Signed by me this 18th day of September,

CALVIN W. VAUGHN. Attested by:

HARRY THOMPSON, FRED TREAT.

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