US438498A

US438498A - Ferrule-plug

Info

Publication number: US438498A
Authority: US
Publication date: 1890-10-14
Anticipated expiration: 1907-10-14

Description

(No Model.)

0. M. SMITH.

FERRULE PLUG AND MAGHINE FOR MAKING THE SAME.

No. 438,498. Patented Oct. 14, 1890.

I E M I 1' .f E W 1 I x 1m, lilH/ my? W a UNITED STATES PATENT 'ORREN M. SMITH, OF PHILADELPHIA, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 438,498, dated October 14, 1890.

Application filed August 21, 1890. Serial No. 362,677. (No model.)

To all whom it may concern.-

Be it known that I, ORREN M. SMITH, a citizen of the United States of America, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Ferrule Points or Plugs, and Machines for Making Same; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to the manufacture of points or plugs for ferrules.

The object of the invention is to provide a machine or apparatus for the manufacture of ferrule-points, by the use of which the blank is compressed and shaped and provided with a circumferential depression, which is of the same size as the original blank.

In carrying out my invention 1 cut off from a cylindrical bar of metal, preferably steel, a piece of proper length, and which is in diameter considerably smaller than the point or plug will be when completed. This blank is first placed between a pair of sliding dies, which are grooved to embrace the blank and hold it firmly in position, and which will prevent the blank expanding at this point to produce upon the plug a circumferential recess, leaving the metal of the same diameter as the original blank. These grooved and sliding dies are held directly over a solid die, which forms the flat or upper end of the plug. The follower which forms the end or lower portion of the plug is properly shaped, so that when brought down upon the blank with pressure it will upset the metal and press the same to completely fill the dies, therebyshaping, compressing, and finishing the plug at one operation.

In the accompanying drawings, forming part of this specification, Figure 1 is a sectional elevation showing the blank in position and the upper die raised. Fig. 2 is a vertical sectional view showing the upper die lowered and the completed plug. Fig. 3 is a plan view of the sliding dies, which hold the blank centered and prevent the same being expanded, and which form at this point a circumferential groove.

A refers to the base portion of the apparatus, which is provided centrally with a shouldered aperture A, within which is placed a follower B, the upper portion of which is of less width than the shouldered aperture,thereby providing between the upper end of the follower B and upper edge of the base-plate A a space which fOrms one end of the plug. This follower extends through the base A, and when driven upward displaces the finished plug. The base A is also provided with openings 0 0, through which pass downwardly-extending arms orbars D D,which at proper points are bent out of line, as shown, said bars also passing through openings E E in the sliding dies F F, said sliding dies being suitably held upon the base A by guides f f, in which they can have not only an inward and outward movement, but also a slight rocking movement, the under side of said dies being beveled so as to permit of this rocking movement. These sliding dies have circular recesses, which embrace the blank when it is placed in position.

The upper guide G has a recess g, slightly larger than the blank and of such configuration as it is desired to give to the point of the plug. The lower face of this upper die is slightly beveled.

In operation the blank 1 is placed upon the upper end of the follower B, and as the upper die is moved downward the sliding dies F F will move inward to grasp the blank and center it, and after this has been done the sliding dies are held against further movement. In the downward movement of the upper die G the blank is compressed and shaped, the same being upset sufliciently to fill the space beneath the sliding dies F and also the recess in the upper die. When the upper die has reached the full limit of its downward movement, the plug is completed.

By providing the sliding dies with beveled ends they will be permitted to have a slight rocking movement, which has the effect of loosening said dies from the groove in the completed plug, thus permitting the arms to be readily raised, and when the upper die reaches the limit of its upward movement the sliding dies are retracted and the completed plug X, Fig. 2, remains in a vertical position in the lower die and can be readily removed therefrom by forcing the follower B upward. The lower die is preferably formed with a raised portion surrounding the recess in which the follower lies, and the under side of the sliding dies are constructed to lie substantially over the same.

In the use of the apparatus hereinbefore described the plugs or points can be rapidly and cheaply manufactured without loss of material, and by providing the points with a groove they can be more securely attached to the shell of the ferrule, and when completed will not have a wire-edge which would have to be removed, as would be the case if the points were made by the use of the ordinary two-part dies.

I-Ieretofore points have been made by either shaping them in two-part dies or by turning them in a lathe. The point hereinbefore described is much more dense than the ordinary point, and is finished, the same being highly polished and smooth when it leaves the dies, especially that part of the same which will be exposed when attached to the ferrule.

The point is intended to be used in connection with ferrules attached to canes, umbrellas, &c.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The improved article of manufacture consisting of a blank of metal compressed and upset to provide a plug X, Fig. 2, having a circumferential recess near one end, substantially as set forth.

2. In an apparatus for man ufacturin g points or plugs for ferrules, the combination, with a die having a recess adapted to form the point thereof, of sliding dies for grasping and centering the blank, and a die having a follower, substantially as and for the purpose set forth.

3. In an apparatus for forming ferrulepoints, the combination of the solid upper and lower dies, intermediate sliding dies having semicircular recesses for grasping the blank, and means for moving said sliding dies, substantially as shown, and for the purpose set forth.

4. In combination with a solid upper die, having a recess for forming the end of the point, a lower die having a shouldered recess and a follower, and intermediate sliding dies having beveled lower edges so as to be capable of a rocking movement, substantially as shown, and for the purpose set forth.

5. In a device for manufacturing ferrulepoints, the combination, with a base A, having a central shouldered recess and a raised portion surrounding the same, of a shouldered follower B, sliding dies F F, confined in suitable guides and provided with openings E, through which pass operatingbars having bent portions for actuating and holding the sliding dies, and a solid die G with a recess, substantially as shown, and for the purpose set forth.

In testimony whereof I affix my signatu re in presence of two witnesses.

ORREN M. SMITH. \Vitnesses:

JOHN W. SPROWLES, ROBERT VVINTERBoTToM.