US668395A

US668395A - Fastener-making machine.

Info

Publication number: US668395A
Application number: US1515200A
Authority: US
Inventors: John D Stirckler
Original assignee: CONS FASTENER Co
Current assignee: CONSOLIDATED FASTENER Co; CONS FASTENER Co
Priority date: 1900-05-01
Filing date: 1900-05-01
Publication date: 1901-02-19
Anticipated expiration: 1918-02-19

Description

No. 668,395. Patented Feb. I9, IQYOI. J. D. STIBCKLER.

FASTENEB MAKING MACHINE.

(Application filed May 1 1900.).

(No Model.)

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AT T more JOHN D. STIROKLER, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE CONSOLIDATED FASTENER COMPANY, OF PORTLAND, MAINE.

FASTENER-IVIAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 668,395, dated February 19, 1901.

Application filed May 1, 1900. Serial No. 15,152. (N model-J To all whom it may concern:

Be it known that I, JOHN D. STIRCKLER, a citizen of the United States, residing at Boston, in the county of Suffolk and Commonwealth of Massach usetts, (post-office address 468 Summer street, East Boston,) have invented a new and useful Improvement in Fastener-Making Machines, of which the following is a full specification.

My invention relates to machines for forming a contracted neck on the eyelet or stud of the fastener; and it consists of certain details of construction hereinafter shown and described.

In the drawings I have shown my machine for forming the contracted neck on the ball member of the fastener.

Figure 1 shows a vertical section of the upper and lower dies of my machine with the eyelet or stud held on the lower die before being operated upon. Fig. 2 shows the same after the dies have been brought together, forming a neck on the stud. Fig. 3 shows the stud before the neck is formed in it, and Fig. 4 the same provided with a neck. Fig. 5 shows a plan of the under side of the upper die of my machine.

Referring to the drawings, the upper die A consists of a hollow sleeve 0, suitably held in the plunger of my machine and having at its lower end a conical concavity.

Inserted in the inside of the sleeve C is the collet-piece D, which is constantly urged outward by the spiral spring E, between this end and the adjusting-screw c, screwed into the upper end of the sleeve 0. Although urged outward, the outward motion of this colletpiece D is limited by the stop-pin 11 playing in the slot c of the sleeve C.

The lower end of the collet-piece D flares outward into a cone corresponding to the conical concavity in the end of the sleeve 0. The lower end of the piece D is also kerfed, so that it is really formed of a number of spring-fingers, which may be contracted, and, as will be seen in the drawings, these fingers will be contracted when the piece D is thrust back into the sleeve C against the action of the spring E.

In the lower end of the piece D is cut the cavity 01', large enough to admit the stud X, as shown in Fig. 3, and so shaped that when the fingers of the piece D are contracted this cavity d will have just the shape of the stud with the neck at.

The stud X is held on the lower die B, having the teat 17, supporting the inside of the stud in height, and having a diameter small enough to allow it to be withdrawn after the neck as is formed.

By means of the spring E and the stop 61 I am enabled to adjust my machine very nicely in order to insure an even and uniform product.

As will be readily understood, the stud :1; having been placed on the teat b, the plunger is lowered until the lower face of the colletpiece D contacts with the flange of the stud. Further downward movement of the sleeve then acts on the spring E, thereby practically storing power while the collet-piece is being moved to shape the stud. The arms of the oollet being arranged to spread automatically when under the action of the conical concavity, it will be seen that upon the return movement of the sleeve C (which is aided by the stored power of the spring) the spring E will hold the collet-piece against the flange of the stud until said piece has spread to a point where it can be raised without tending to take the stud from on": its teat.

I claim 1. In a fastener-making machine, a die consisting of a sleeve C having a conical concavity, the piece D having an external conical end and neck provided with a central forming-concavity in combination with a spring E andstop 01 substantially as shown and described.

2. In a fastener-making machine, the combination of a die consisting of a plunger, a sleeve mounted therein, said sleeve having a conical concavity at its lower end, a colletpiece mounted to have a sliding movement in said sleeve, the lower end of said piece having an external cone-shaped face adapted to be acted upon by said conical concavity to compress the piece, a central forming-cavity formed at the lower end of said piece, a spring for normally holding the lower end of said collet-pieoe in an inoperative position; a stop, In Witness whereof I have hereunto set my and means for forming an abutment against hand. which the lower face of said collet-piece eontaets, thereby storing power during the for- 5 ward movement of the plunger for retaining Witnesses:

said piece against a return movement until WM. B. H. DOWSE, in a position to return.

JOHN D. STIRCKLER.

, A. H. FLANNERY.