US21635A - Improved machine for making wire springs for furniture - Google Patents

Description

UNITED STATES PATENT OEEICEo CHARLES A. YOUNG AND SOLOMON W. YOUNG, OFy PROVIDENCE, RHODE ISLAND.

`IMPROVED MACHINE FOR MAKING WIRE SPRINGS FOR FURNITURE.

Specification forming part of Letters Patent No. 21,635, dated September 28, 1858.

To all whom it may concern:

Be it known that we, CHARLES A. YOUNG and SOLOMON W. YOUNG, of Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Machine for Making Biconical Wire Springs for Furniture, Src.; and We do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a front elevation of the machine. Fig. 2 is a side elevation and section through the line A A of Fig. l. Fig. 3 is a plan of the machine, the same letters referring to like parts in the different figures.

G G is the frame of the machine, of castiron, with a slab, C, of wood or iron, upon the top of the same. Upon the table thus formed are placed and secured, in a proper manner, the uprightjaws F F, of iron, in which are fitted metallic boxes ff, in which the shafts T T revolve in connection by the gearsJ J' thereon.

Upon the end of each shaft, at the front of the machine, are secured two rolls, B B, of iron or steel, constructed in the ordinary manner of rolls for rolling or drawing wire, having a rounded groove sunken in each to the depth of half the diameter of the wire to be used.

At the right of the rolls B B is the roll D in the end of the lever H. This roll also has a groove formed in its face, but of a greater width and depth than those of B B. This roll x gives direction to the wire in coiling the same.

The lever H swings upon a pivot, g, and projects downward from the table. It is slightly curved at the lower end, and has a knife edge formed thereon, which bears against and is acted upon by the heart-shaped cam L, which, as it revolves with the shaft P, on which it is secured, imparts a vibrating motion to the lever, which causes the roll D to approach and recede from the rolls B B at the proper ltime, for purposes hereinafter explained.

The cam-shaft l? is revolved at a proper relative speed with the rolls B B by means ofthe gear S and the intermediate gears, M and E, on the shaft R, Fig. 2, the latter of which engages with the gear J on the shaft T, which is revolved by means of a belt on the pulley O.

Operation: The end of the wire is passed rod n, and is thus coiled. The roll D gradually approaches the rolls B B by the action of the cam upon the lever, thereby lessening the diameter of each coil until the knifeedge has arrived at the pointe of the cam, when the roll D is made to gradually recede, thus allowing the coils to increase in diameter as they are formed, until the knifeedge of the lever again arrives at the point t' of the cam, when one spring is completed and another commences to form, and so on, the conical form being imparted by the approaching and receding of the roll D by the action of the heart-shaped cam L through the lever H. This cam can be -applied for this purpose in a number of forms, differing from each other only in point of convenience or fitness with respect to the construction of the other parts of the machine. The roll D may be mounted on a carriage moving in or upon guides or ways on the table, and subjected to the action of the heartcam directly; or the cam itself may be applied directly in place of the roll D, either method serving to produce a like result; but the method herein described is preferred to others, as being more simple and equally ei'- fective.

What we claim as our invention, and desire to secure by Letters Patent, is-

1. A single grooved roll, D, in combination with the upright rod a, to effect the coiling of the wire.

2. Varying the diameter of the coils to produce a biconical form in the spring by causing the roll D to approach and recede from the ceiling-rolls in a direct or curved line horizontally, substantially as specied.

CHARLES A. YOUNG. SOLOMON YV. YOUNG.

Witnesses:

- Isaac A. BROWNELL,

HENRY NICKEL.

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