US505092A

US505092A - George h

Info

Publication number: US505092A
Authority: US
Publication date: 1893-09-19
Anticipated expiration: 1910-09-19

Description

(No Model.)

G. HOHATILLON.

nm N I R P S D N U 0 P M 0 0 $10,505,092. Patent-ed Sept. '19, 1.893.

INVENTQOH 4 TTOH/VEYS.

UNITED STAT S PATENT OFFICE.

GEORGE H. OHATILLON, OF NEW YORK, N. Y

COMPOUND SPRING.

SPECIFICATION forming part of Letters Patent No. 505,092, dated September 19, 1893.

Application filed May 11, 1893.

To all whom it may concern:

Be it known that I, GEORGE H. CHATILLON,

V a resident of the city, county, and State of like viewof the same with the outer springs removed and the internal sleeve sprung out in a position to be removed. Fig. 3 is a side View at right angles to that shown in Fig. 2, showing the fastening disk attached.

My invention relates to compound springs, that is to say, a structure composed of two or more separate springs, and consists mainly in combining one or more spiral springs acting expansively with one or more spiral springs acting contractively and with an appropriate holder, all as described and claimed.

In the drawings A designates the central supporting rod of my new compound spring. This rod has a suitable enlargement a on the lower end, for supporting one or a series of concentric spiral springs, 1, 2, 3, three being shown. At the upper portion of the rod A is a shoulder 12 for purposes hereinafter described.

B indicates a sleeve which consists of two sections 0, d, united at the top by a hinged or flexible connection to a top plate e which forms a bearing against which the upper ends of the springs 1, 2, 3, can bear,and which is perforated centrally to fit the rod A below the shoulder 19. The lower end of each section 0, d, connects by an inclined arm-f with a lower stem g, the two stems g 9 being, when the parts are in operative position, as in Fig. 1, in contact with oneanother. In fact the contiguous stems g serve as connections with the article to be suspended elastically from the rod A. The contracted portions f f also serve as a bearing for a disk h, whichhelps support one or a series of spiral springs 4, 5; or one of said springs (4) may bear against the contracted part f of the sleeve, the other (5) against the disk h as in Fig. 1. The disk it also serves to hold the stems g g in contact with one another. The upper ends of the springs 4, 5, are supported by a bar i which Serial No. 473,837. (No model.)

springs 1, 2, 3. Then the spring 4 (one or more) is passed over the sleeve B till it bears against the contracted end f. Next the peri forated disk h is slipped on the arms 9 of said sleeve, then the spring 5 is slipped on till it bears on the disk 71, and finally the bar i is turned into the convolutions of the springs 4, 5, so as to form a support therefor (as shown in Fig. 1), when the compound spring is ready for use.

When I refer herein to the upward or down ward movement of a part or the top or bottom of certain parts, &c., I do so merelyfor the purpose of explaining the drawings, and

desire it understood that my improved spring is applicable to any devices wherein coiled springs are used and in any relation therein.

The springs 1, 2, 3, meaning those which di rectly surround the rod A and which rest on the head or enlargement a thereof, are open coiled, so that they permit of compression longitudinally whenever by drawing on the stems g the upper plate e of the sleeve is drawn downward. This upper plate 6 when drawn downward comes into contact with the upper ends of these open coiled springs 1., 2, 3, and pushes them together. These springs, therefore, tend after that to re-elevate the sleeve B and whatever load is suspended therefrom, and in this sense they act as cushions for the said sleeve and anything suspended therefrom. The outer series of springs, 4, 5, are closed coiled as shown, so that they cannot be compacted beyond the normal position in which they are applied. When therefore tension is applied to the stems g 9 these outer series of springs follow the sleeve B in its downward movement, because they are connected to said sleeve either at the inclined portions f or by the disk It, or both, and thus these springs 4, 5, under strain are expanded. Hence, I term the inner series of springs 1, 2, 3, contractible, and the outer series of springs expansible, because the ones contract and the others expand under strain. I find that this combination of contractible and'eX- pansible coiled springs around the same stem Works desirable results, and that in cases of overstrain it acts as a safety cushion. Supposing my structure to be employed for suspending a platform from a bridge or viaduct, and that under strain some of the expansive springs should break; the contractive springs, however, will under all circumstances still constitute a cushion. The strain is divided, and being divided between oppositely tending forces, is less liable to work any injury than when all the forces work in the same manner under tension. A special advantage connected with my construction is also to be found in the simple arrangement for putting the parts together and taking them asunder. To take the structure apart it is only necessary to turn the rod 2' out of the convolutions of the springs 4, 5; thereupon to slip the spring 5 down oii the sleeve and rod; then take off the disk h. This releases the spring 4, and after that is ofif, leaving the parts in the position shown in Fig. 2, the sleeve can be easily opened and moved upward, so that theinterior springs may also be gotten at. It is important that the sleeve should be jointed in such a way that its two wings or portions 0 d can be opened out in the manner shown in Fig. 2, because if said parts a d were so narrow as to expose the whole diameter of the inner springs between them, there would be danger of the lower end of the rod A slipping out laterally from between the arms a d of the sleeve under strain; but inasmuch as the armsc d of my sleeve 13, as is clearly shown in Fig. 1, approach one another sufficiently far to prevent the head a passing out between them, the danger above mentioned is entirely overcome.

Having now described my invention, what I claim, and desire to secure by Letters Patcut, is

1. The combination of a central rod or stem with one or more open coiled springs 1, 2, 3, cushioning contractively, and with one or more closely coiled springs, cushioning expansively, and with means substantially as described for supporting both sets of springs on said rod, all as specified.

2. The combination of the rod A having head or enlargement a and shoulder b, with the sleeve B carried by said rod and adapted to be opened and shut, with one or more open coiled spiral springs 1, 2, 3 supported on the head a, and with one or more closed coiled springs 4, 5 bearing against the sleeve 13, and with a holder t resting on the shoulder 19 and connecting with the outer spring or springs, all as and for the purpose specified.

3. The combination of the central rod A having head a and shoulder 12 with the open coiled spring or springs 1, 2, 3, sleeve B forming stems g g, disk It, closed coiled spring or springs 4, 5, and rod t' resting on shoulder Z), all arranged as and for the purpose specified,

GEORGE H. CHATILLON.

Witnesses:

CHARLES E. SMITH, L. M. WAoHsoHLAeER.