US577243A

US577243A - Island

Info

Publication number: US577243A
Authority: US
Publication date: 1897-02-16
Anticipated expiration: 1914-02-16

Description

(No Model.)

J. L. FIT-TZ.

CHAIN SWIVEL.

N0.577,24s. Patented Peb. 16,1897. i

Fig-.1. 'Fig-.2.

IINTTEE STATES PATENT 'l-EEToE.

JOHN L. FITTZ, OF PROVIDENCE, RHODE ISLAND.

CHAIN-SWIVEL.

SPECIFICATION forming part of Letters Patent No. 577,243, dated February 16, 1897. Application filed October 9, 1896. Serial No. 608,324. (No model.)

To all whom it may concern,.-

Beit known that I, JOHN L. EITTZ, of the city of Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Chain-Swivels; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this speciiication.

This invention has reference to an improvement in the construction of watch-chain swivels; and it consists in the peculiar and novel construction by which the rotatable ring is formed of stock-plate and the raw edges are out of sight and a more sightly chain-swivel is produced at less cost.

Figure l is a side view of my improved chain-swivel. Fig. 2 is a side View of the post and a sectional view of the cup, showing the same separated. Fig. 3 is a side view of the post and the cup when secured together. i

Watch-chain swivels are usually made of or covered with precious metal. As heretofore constructed the post was provided with a pin, on which a collar was placed, and the pin was riveted over the collar, so as to hold 1 the same in place, While the collar and the chain-ring secured thereto could turn on the pin of the post. The objection to this construction is that the riveted end of the post is unsightly and extends into the chain-ring. Another objection is that the upper edge of the collar presents the raw edge of the stock-A plate, largely used for chains and chain-swivels and consisting of a plate of inferior metal one side of which is covered vwith precious metal.

In the drawings, @indicates the snap-hook of a watch-chain swivel, b the post of the pin I provide with the annular groove cl. The cup e is struck up in a suitable die from a piece of stock-plate, so that the precious metal forms the outside of the cup. The raw edge of the stock-plate is the edge f on the lower edge of the cup e. The cup e is placed over the pin c, so that the edge f rests on the shoulder g of the post b and is out of sight. I now indent the cup e, so as to force a portion of the metal into the annular groove d, so as to hold the cup on the pin and allow them to turn independent of each other. This indenture may extend around the cup, as shown in Fig. l, or the indenting of the sides of the cup e into the groove cl may be only at the points where the chain-ring is secured tothe cup e, leaving the rest of the cup in its original cylindrical shape. By this construction a very neat and superior iinish is given to the swivel, no raw edges are in view and liable to corrosion, and the cost of the swivel is greatly reduced.

I-Iaving thus described my invention, I claim as new and desire to secure by kLetters Patent- In a chain-swivel, the combination with the post b 4having the pin c and shoulder g, of the annular groove d, the cup e a portion of the sides of which extends into the groove cl, and the ring h; whereby the ring h is secured to the post and free to rotate on the same, as described. y

In witness whereof I have hereunto set my hand.

JOHN L. FITTZ.

Vitnesses:

JOSEPH A. MILLER, J osEPH A. MILLER, Jr.

swivel, and c the swivel-pin. This swivel-