US1448567A - Amd frederick c - Google Patents

Description

Mar. 13,1923; 1,448,567 0. MULLER ET AL MACHINE FOR SENDING WIRE Filed Jan. '7, 1920 Fig. m 4:

u 5 by I OTTO MULLER, OF BROOKLYN, NEW YORK, AND FREDERICK C. FISCHEBJ OF BEEWYN', ILLINOIS, ASSIGNORS TO WESTERN ELECTRIC COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

MACHINE FOR BENIDING WIRE.

Application filed January a, 1920. Serial No. 349,991.

To all whom it may Concera:

Be it known that we, Orro MULLER and FREDERICK C. FISCHER, citizens of the United States, residing at Brooklyn, in the county of Queens, State of New York, and Berwyn, in the county of Cook, State of Illinois, respectively, have invented certain new and useful Improvements in Machines for Bending Wire, of which the following is a full, clear, concise, and exact description.

The present invention relates to special machinery for manufacturing processes, and more particularly to machines for forming and bending wires and rods.

It has for its object to provide a simple convenient and efficient device of this nature for forming the supporting wires of the stems of electric lamps or vacuum tubes.

The invention has for its further object to facilitate the safe manipulation of the glass stems during the operation.

In the present instance the device is designed to form hooks in the filament-supporting wires of the tubes after these wires have been mounted in their stems or posts.

To these and other ends the invention consists in certain improvements and combinations of parts which will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawings, Figure 1 is a perspective view of a machine constructed in accordance with and illustrating one embodiment of our invention, the parts being shown in normal position;

Figure 2 is a detail sectional view illustrating the forming elements in operative position;

Figure 3 is a view similar to Figure 2, showing the parts at a further advanced stage of the operation, and

Figure 4 is a perspective view, partially broken away, of the finished article in the manufacture of which our invention is utilized.

Similar reference numerals throughout the several views indicate the same parts.

Attention is first directed to Figures 1 and 4 which show the element acted upon. This consists of the flared stem A containing the lead wires B and from which rises an offset extension post C containing the various sets of supporting wires D, E and F.

The wires D are provided with hooks G at their ends, to support the filament H in the manner shown in Fig. 4 and the present machine forms these hooks as an initial operation before the supporting wires are otherwise bent to the completed form shown in Figure 4. In the present embodiment, we provide a table or bed 1 supported at 2 and having fixed thereon a block 3 forming one of a pair of clamping jaws fitted with a hardened insert 4 of the contour shown. The other and opposing jaw 5 is movable toward and from theblock 3 in guide blocks 6 forming a T-shaped guide for the base flanges 7 of the jaw. A male die member 8 at the top of the movable jaw 5 engages over the lip of the hardened insert 1 on the fixed jaw when the jaws are brought together and such relative movement is accomplished by a lever 9 pivoted at 10 in suitable bearings 11 fixed to the bed 1. The lever is fitted with a cam 12 that slides against the rear face of the movable jaw 5'to advance it with mechanical advantage.

The bed is provided with a laterally opening slot 13 below and in vertical alignment with the contacting faces of the jaws and these latter are also suitably cut away, as indicated at 14, to accommodate and permit the lateral insertion of the post C in such manner as to bring the support wires D be tween the jaws with their ends projecting above the same or above the lip of the fixed jaw 3 to a predetermined extent controlled by the seating of the upper end of the post in the cutaway portion 14 of one of the jaws. When the lever 9 is operated,by being moved downwardly, the movable jaw 5 advances and clamps the shanks of the wires while at the same time the die member 8 thereon bends the ends to a right angle position over the lip 4 of the fixed jaw, as shown in Figure 2. The cam 12 is so formed that it is idle or ineifective beyond this point during a further movement of the lever 9 and while a rounded, yielding forming device 15 is brought into co-operation with the jaws and the ends of the wires. This device is in the form of a finger pivoted to the lever at 16 and pressed inwardly by a spring 17 on an adjustable support 18 carried by the lever. The rounded face of the finger rides over the die member 8 on the movable jaw and presses the tips of the wires down close to impart to them the conformation of the portion Let the fixed jaw, as shown in Figure 3. When the lever 9 is raised and the forming device carriedback, the movable jaw 5 is retracted 'injcontact with the cam 12 under the influence of a spring 19 connected to a post20 therein and to a similar post 21 anchoredin the bed and the wires are released for removal. Ihe

spring 17 holds the forming member 15 closely against the jaws but prevents a harsh Contact initially with thedie member 8.

What is claimed is: I

1. A wi'rebendingdevice comprising relatively movableclamping jaws, means on one ofsaid jaws to bend, over the other jaw, the projecting end'of a wire placed between said jaws, a lever to operate one of said jaws and a forming member carried by said operating lever and being 'adaptedto cooperate with one of said jaws to bend said wire a second time. 7 v

2. Ina wire forming machine the combination with a slotted bed, a stationary and movable jaw, said jaws being arranged to contact above the slot in the bed to clamp between them a length of wire inserted through said slot, and lipson said jaws at right angles to each other to bend the projecti-ng end of the wire at right angles to that portion of the wire clamped between the aws. I

3. In a 'wire-formingmachine, the combination with a slotted bed, of a pair of relatively movable jawswhich are arrangedat either side of said slot and which are adaptmas er ed to clamp between themwork inserted through the slotted bed, one of said jaws being provided with a male die member 5] n a wire i'ormmg machine, the c'ombination with two relatively movable clampmg aws, one ott which is provided with "a male die member adapted to bend the prow jecting end of. awire placedfbetween the jaws, over theother jaw, of a lever having a cam for operating one of the jaws toward the other and a yielding forming device pivoted to the lever to co operate with the jaws in a relatively transverse direction and further bend the said projecting end oi? the wire.

In witness whereof, I hereunto siibscribe my name 1919.

OTTO MULLER In witness whereof, I hei'ennto subscribe my name this 30 day of December A. 1)., 1919.

FREDERICK C. FISCHER.

this 25 day of November d

Images