US75405A - John freeland and daniel ward - Google Patents

Description

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JOHN FREELAND AND DANIKL WARD, OF NEWl YORK, N. Y.

Letters Patent No. 75,405, dated M'arct 10,1868.

IMPROVED MACHINE FOR GOILING SPRINGS.

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TO ALL WHOM IT MAY OONCERN:

Be it known that we, JOHN FREELAND and DANIEL WARD, of the city, county, and State o f New York, have invented a new and useful Improvement in4 Machine for Ceiling Springs; and we do hereby declare that the following is a full, clear, and exact description thereof, whiclrwill enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1, sheet 1, represents a side elevation of our invention, partly in section, to show interior parts.`

Figure 2, sheet 2, is a plan or top view of the machine.v

Figures 3, 4,. sheet 2,A are details. y

Figure 5 exhibits a spring when coiled.

Similar letters of reference indicate corresponding parts.

This invention relates to a machine for coiling our patentfv'olutefand.other similar springs, whi1e hot-,fand consists in a. frame constructed with head and tail-blocks like a turning-lathe, having suitable driving-gear and an adjustable spindleor mandrel, around which the spring is coiled, and connected therewith an adjustable selfregulating guide-rest or table, which holds the plate or bar of metal while it is being coiled to form the spring,

as hereinafter more particularly described.

A represents the frame of the machine, B the head, and B the tail-block. A set of graduated pulleys, O C' C, with a pinion, D, made fastto them, turn loosely on a shaft, a, carrying the chuck b. The pinion D gears into a spur-wheel, D1, that carries a small pinion, D2, gearing into the large spur-wheel D3, on the chuck-shaft a, to give it slow and graduated motion. The chuck b is secured to the shaft a by screws or otherwise, seas to be changeable to suit di`erent-sized ceiling-spindles, which are so constructed as to obviate the necessity of employing keys to hold them when set lin the chuck for driving. On the tail-block B is placed a sliding screw, E, which is moved by the revolving nut c, which forms the hub of the spur-wheel F, actuated by a pinion, G, on the crank-shaft d. The coiling-spindle, e, is attached to the end of the slidingv screw E, by a neck or flanged ring, in such manner that it can revolve freely independently of the screw when itis held by the chuck J. The spindle is grooved or slotted` on one side from end to end, so as to receive the end o f a plate or bar to be coiled, and' allowY the spring, when coiled on it, to be slipped off by running the screw E bacl'cfwiththe spindle to bear one side or end of the spring against a dischargingring or thimble, g, lwhich ts,the endfoithe spring,and turnsl loosely' with it. 'x i On one side ofthe machine, opposite the ceiling-spindle e, is placed an adjustable guide-rest orbed, E, for' supporting the plate or bar when it is coiled. This guide-rest is secured to a sliding block, Ifwhich is'moved up and down by a screw, J, attached on the under side, that is actuated by a nut, z', on the bevel-gear wheel K.

n The match-gear, K', on the shaft .5, takes its motion from the spur L on the chuck-shaft a, through the train lll L2 L3, and' the motion` is so graduated that the sliding block I,'with the guide-rest H, shall descend and recede from the ceiling-spindle e, exactly in accordance with the spring as it is coiled, 'so that a uniform distance shall be maintained between the support-ing surface of the guide-rest and the under side of the spring, from iirst to last, during the whole operation of coiling. Thegears L L3 are changeable to suit different-sised sp1-ings or plates, and bars of different thickness, according to fixed proportions. V

I For' ceiling a volute spring, the'hot-metal plate or bar is laid on the guide-rest H, and one end is inserted in the slot in the eoiling-spindle e, which, being set in the chuck b, revolves slowly, and the spring is wound upon it while hot, thus receiving a form of a coil, which it retains when the metal becomes cold. The ceiling; spindleis withdrawn from the spring by running the screw E back with the crank.

For guiding and holding the plates or bars centrally on the guide-rest H,/`whi le they are coiled to form springs, the forks of single volute springs are slipped under side bars m m, as shown in g. 3; and for ceiling double volute springs, a movable guide, n, is slipped-under the bars, and lies upon the butt' end of the spring= plate, as shown in g. 2.

Having described our invention, we claim as new, and desire to secure by Letters Patent- 1. The'slotted coiling-spndle e and the sliding screw E, in combination with 'the chuck b, all constructed, arranged, and operating substantially as and for the purpose herein described.

2. The guide-rest H and the sliding block I, in combination with the coiling-spindle e, constructed and operating substantially as and for the purpose herein described.A

v 3. The combination ofthe pulleys C, the chuck I), the coiling-spindle e, the sliding screw E, the guido-rest H, and the sliding block I, constructed, arranged, and operating substantially as and for the purposes set forti and escribed.

JOHN FREELAND,

DANL WARD.

Witnesses:

WM. F. MGNAMARA, ALEX. F. ROBERTS.

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