US2530575A - Eyeleting machine - Google Patents

Description

Nov. 21, 1950 s. 1.. GOOKIN EYELETING MACHINE 2 Sheets-Sheet 1 Filed May 11, 1946 B his ttar e Nov. 21, 1950 s. L GOOKIN EYELE'I'ING MACHINE 2 Sheets-Sheet 2 Filed la}! 11, 1946 y 's/llt 6 a.

Patented Nov. 21, 1950 EYELETIN G MACHINE Sylvester L. Gookin, Quincy, Mass assignor to United Shoe Machinery Corporation, Flemington, N. 1., a corporation of New Jersey Application May 11, 1946, Serial No. 669,130

The purpose of the present invention is to provide improvements in machines for making wire terminals of the type illustrated in United States Letters Patent No. 2,439,465, granted April 13, 1948, upon my application. Such a terminal is made by forming a loop or eye of wire and installing an eyelet therein.

In some respects the machine illustrated herein is similar to that illustrated in the patent mentioned above, but in other respects the machine hereinafter described embodies improvements that avoid detrimental efiects due to wear of the wire-bending mechanism.

Referring to the drawings,

Fig. 1 is a right side elevation, partly in section, of a machine embodying the present invention;

Fig. 2 is a vertical section, on alarger scale, of the anvil assemblage and a portion of the eyeletraceway (line 11-11 in Fig. 1);

Fig. 3 is a horizontal section (line III-I11 in Fig. 2) of means for oscillating the anvil;

Fig. 4 is a vertical section (line IV-IV in Fig. 6) of the work-engaging elements in the final stage of making a terminal;

Fig. 5 is a top plan view of the anvil in its initial position, and includes a wire in position to be transformed to provide a terminal eye or 100p;

Fig. 6 is a view similar to Fig. 5 except that the anvil has completed the terminal eye and stands at the opposite limit of its range of oscillation; and

Fig. 7 is a bottom plan view of a completed terminal.

The general organization of the illustrated machine, disregarding the elements concerned with bendin a wire, is the same as that disclosed in United States Letters Patent No. 1,369,021, Glass, granted February 22, 1921. A vertically movable setting tool l0, provided as usual with a spring-pressed spindle l I, slides in a bearing l2 in the frame 13. The tool I0 is reciprocated by mechanism comprising a rotary shaft I4, a crank-pin l5, a connection link It, a lever I1 and another link I8 to which the upper end of the tool is connected. The fulcrum pin I! of the lever I! has a bearing in the frame l3.

Eyelets are supplied to the spindle l I, as usual, by a raceway 20 that rocks on a horizontal pivot pin 2| fastened to the frame [3. The raceway is oscillated by mechanism comprising a cam 22, a cam-roll 23, a cam-arm 24, a rockshaft 25, an arm 26, and a link 2'! connecting the latter 1 Claim. (Cl. 153-1) arm and the raceway. The shaft I4 is provided with a clutch (not shown), and the clutch is controlled by manually operable means including a member for arresting the shaft at the conclusion of every run when the tool I9 is at the upper limit of its range of travel (Figs. 1 and 2). A clutch of this type is shown and described in Patent No. 2,056,316, Gookin, granted October 6, 1936.

The frame of the machine includes a fixed bed 30 by which a rotable anvil 3| of improved construction is supported below and in line with the setting tool 10. The anvil is provided with a cylindrical shank 32 and the latter has a bearing in the bed. The rotational axis of the anvil coincides with the axis of the setting tool I0. The anvil is also provided with an annular concentric upsetting shoulder 33 of concave section (Fig. 2) and with an upstanding concentric pilot 34 for guiding an eyelet thereto. A finger 35 is provided for wrapping a wire around the pilot to form a circular loop or eye 40 for receiving an eyelet. The finger 35 has a bearing in an eccentric portion of the anvil and is telescopically related thereto. A spring 36 normally raises the finger to place its upper portion alongside the pilot 34 and in the path of the setting tool l0. One side of the finger has an incurved arcuate surface 31 conformed to and engaging a segment of the perimeter of the upsetting shoulder 33. The surface 31 is concentric with the axis of the anvil, and is spaced from the pilot 34 just far enough to admita stranded electric wire 38 from which insulating material 39 has been stripped. This surface is wide enough to confinethe ends of wires that may be not quite long enough to encircle the barrel of an eyelet. For simplicity of drawing the wire is represented without attempt to indicate individual strands.

Rotary motion of the anvil through an angle of 270 is sufllcient to form an eye 40 of the wire 38. For this purpose a reciprocatory rack bar 4| is installed in the bed 30 and arranged to engage a pinion 42 in the shank 32 of the anvil. The rack bar is reciprocated in timed relationto the strokes of the tool l0 and receivesits motions from the power-operated lever IT to which it is connected by a bell-crank 43 and a link 44. The fulcrum stud 45 of the bell-crank is fastened to the bed. These connections synchronize the wrapping motion of the anvil and the downward travel of the tool I0, and spread the eye-forming operation through one-half revolution of the crank 4 5.

A work supporting table 50 is fastened to the bed 30-. Its upper surface is located at the level of the upsetting shoulder 33, and it is provided with a hole through which the pilot 34 and the wrapping finger 35 may project without touching the table.

When preparing a stranded wire for production of a terminal, the length of wire 38 to be bared by stripping insulating material 39 therefrom will preferably be just enough to encircle the barrel of an eyelet, but no more. The end of the insulating material will then be adapted to locate the bare portion of the wire lengthwise (Fig. 5) in the desirrzl position when that portion is placed between the pilot and the finger 35. Once the wire has been placed in the desired position, the

operator will hold the covered part thereof on or 1 near the table and trip the clutch. Immediately, the anvil will start to turn clockwise about its axis in response to the forward stroke of the rack bar I which will continue until the finger 35 has wrapped the wire around the pilot 34 to form an eye 48 (Fig. 6).

' Meanwhile, the down-stroke of the setting tool Ill will carry the spindle ll through an eyelet 52 in the raceway 20, the latter will be retracted,

- the spindle will transfer the eyelet to the pilot 34, the tool ID will depress the spring-biased finger 35 (Fig. 4) and drive the eyelet along the pilot and through the eye 40 until, finally, the prongs of the barrel of the eyelet are curled and clenched against the bottom of the eye by the upsetting shoulder 33. At this stage the job will be finished, the tool In and anvil 3| will return to their initial positions, and rotation of the shaft II will be arrested.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the Unitedstates is:

An eyeleting machine comprising a bed, an anvil supported thereby and rotatable about its vertical axis, the anvil having an annular upsetting shoulder and an upstanding pilot concentric with said axis for guiding an eyelet thereto, an eyeletsetting tool arranged to cooperate with the anvil. power-operated means for moving said tool toward and from the anvil, a member movable in the bed for oscillating the anvil about said axis, direct mechanical connections between the memher and said means for so oscillating the anvil in time relatiomto the tool movements, a finger on said anvil spaced from said pilot to accommodate a wire between saidfinger and said pilot, said finger being depressible into the anvil and arranged to project therefrom into the path of said tool, and means normally urging said finger into said path, said finger being arranged to wrap a wire around the pilot upon rotation of said anvil and to recede from said path when depressed by said tool.

SYLV'ESTER L. GOOKIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number I Name Date 263,622 Swan Aug. 29, 1882 1,222,014 Miller Apr. 10, 1917 1,526,716 Neunherz Feb. 1'7, 1925 1,677,968 Hughes July 24, 1928 2,296,983 Cooper Sept. 29, 1942 2,439,465 Gookin Apr. 13, 1948 FOREIGN PATENTS Number Country Date 538,538 Great Britain Aug, '1, 1941

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