US1064019A - Shock-absorber. - Google Patents

Description

G. E. SHIPPEY.

SHOCK ABSORBER.

APPLICATION FILED MAY 13. 1912.

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WITNESSES. INVENTOR.

. GeoryeES/aippey, 1.51M. BY ATTORNEY.

COLUMBIA PLANOGIAPH CO" WAJNINGTON- D. C.

Patented June 10, 1913.

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SHOCK-ABSORBER.

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Specification of Letters Patent.

Patented June 10, 1913.

Application filed May 13, 1912. Serial No. 697,034.

To all whom it may concern Be it known that I, GEORGE E. Snirrnv, a citizen of the United States, residing at Pittsfield, in the county of Berkshire and State of htiassachusetts, have invented ccrtain new and useful Improvements in Shock-Absorbers, of which the following is a specification.

My present invention relates to devices for reducing the oscillations of the spring supported portion of spring vehicles and has for its object to relieve the shocks and jolts incident to travel.

The invention consists in the combination, construction and arrangement of parts, as hereinafter described and set forth in the claims, a specific useful form of embodiment thereof being shown in the accompanying drawings, wherein- Figure l is a side View of my device operatively mounted upon the relatively movable parts of a vehicle, a portion of the casing being broken away; Fig. 2, a bottom edge view of my device; Fig. 3, a side or face view of the casing frame, and Fig. 4, a detail vertical sectional view of the compression rollers.

The device essentially comprises a casing or spring-receiving port-ion, arms or levers pivotally secured together and extending laterally from the casing, and resilient means provided Within the casing for yield ingly opposing the movements of the arms relatively to each other.

As shown, the arms 1, 2, are pivotally secured at their outer ends in any suitable manner and at any convenient points on opposite parts of the vehicle, that is to say to the underbody or running portion 3 and to the overbody or spring-supported portion 41, the inner ends of the arms 1, 2, being pivotally secured together, as shown at 5. Each of the arms 1., 2, is shown to comprise separate plates 6, 6, 7, 7 which are secured at their inner ends to opposite faces of a ring 8, which forms the casing frame, and converge at their outer ends which are preterably perforate and carry in each instance a spreader or washer 9. The ring 8 has a body-portion of uniform width and is preferably constructed with an integrally formed diainetral portion or bridge 10, which is increased in width at its ends to form oppositely arranged shoulders 11, 1'1, 12, 12, for the support of leaf- springs 13, 13, preferably provided in pairs and so disposed on opposite sides of the bridge 10 that their lines form scgn'lental sections in the ring.

As shown, the plates (3, (3, of the arm 1 are shaped at their inner ends to conform to the outline of the bridge 10 and are secured thereto face to face in fixed positions by means of rivets 151-, i l, passed through suitable coincident apertures 15, 15, provided in the l'n'idge. The thickness of the bridge 10, which is n'efcrably less than the height of the ring 8, is proportioned to fill the space intervening the inner ends of the arm 1, which are arranged to lie in a plane flush with the edges of the ring 8, and accordingly one side of the ring is cut away on opposite edges, as at 16, 10, to receive the plates (3, (l. The plates 7, 7, of the arm 2 are shown as constructed with enlarged inner ends in the form of disks conforming to the outline of the ring 8 and are adapted to inclose and render substantially dustproof the interior of the casing formed by the ring and tin arm- plates 7, 7, a bolt 5 being preferably employed to secure the connected parts in relative position. 1 V ithin the ring 8 and journaled upon fixed supports, as the rivets 1.7, 17, secured transverscly through the plates 7, 7, are shown bushings 18, 1S, prcfm'ably constructed with polyhedral faces and arranged centrally of the segmental sections of the ring on opposite sides of the bridge 10 and in engagement with the springs 13, 13. The faces of the bushings 1S, 18, are designed to atl'ord better wearing qualities, being preferably of tempered metal, and tend to distribute the pressure exerted upon the springs when the arms 1, 2, are actuated. The casing framed by the ring and the plates as afore said is preferably tilled with a non-fluid grease or lubricant to reduce friction of the inclosed parts and to exclude moisture.

In operation, supposing the under-body 8 of the vehicle to be first actuated toward the overbody t, the outer ends of the arms 1, 2, are moved toward each other, causing the bushings 18, 18 to depress the springs 13, f 3, which take into the hollows of the bridge 10, as shown by the dotted lines in Fig. 1, and yieldingly oppose further movement of the arms. The recoil action of the overbody 1; is resisted by the springs in like manner, the bushings 18, 18, being then moved to points on opposite sides of the spring centers.

I claim 1. In a device of the class described, two arms arranged convergently and pivotally secured together at their converging ends, a fixed member carried by one of the arms, and a resilient member interposed between the fixed member and the pivotal point of the arms and carried by the other of the arms for yieldingly opposing the fixed member when the arms are moved relatively to each other.

2. In a device of the class described, two arms arranged convergently and pivotally secured together at a point near their converging ends, fixed members carried by one of the arms on opposite sides of the point of pivot, and springs interposed between the fixed members and carried by the other of the arms for yieldingly opposing the fixed members when the arms are moved relatively to each other.

3. A device of the class described comprising levers pivotally secured together in convergent relation, a thrust carried by one of the levers, and a spring carried by the other of the levers and disposed between the thrust and the pivotal point of the levers, said thrust being arranged to flex the spring when the levers are moved relatively to each other, the stress thus exerted by the thrust upon the spring being gradually increased to the extreme limit of movement of the levers.

4. In a device of the class described, an arm carrying fixed spaced stops, and a separate arm pivotally secured to said other arm at a point intermediate said stops and carrying resilient elements interposed between the stops and the point of pivot of the arms for yieldingly opposing the stops when the arms are moved relatively to each other.

5. In a device of the class described, a casing, leaf-springs within the casing and disposed in parallel spaced relation, compression members for engaging the springs, a radial arm projecting from the casing and arranged to actuate the springs toward the compression members, and a separate radial arm projecting from the casing at an angle to said other arm and arranged to actuate the compression members toward the springs, when the arms are moved relatively to each other.

6. In a device of the class described, arms convergently arranged and pivoted together at their converging ends, a ring carried by one of the arms and having its center coincident with the pivotal axis of the arms, springs mounted in the ring in parallel relation and forming segments therein on opposite sides of the point of pivot of the arms, and fixed members carried by the other of the arms and arranged within the ring segments and adapted to cause said springs to yield toward each other when actuated by the movement of its supporting arm.

7. In a device of the class described, a ring, leaf-springs secured in substantially parallel spaced relation within the ring, an arm extending laterally from the ring and secured in fixed relation therewith, a sepa rate arm extending laterally from the ring and pivoted to said other arm in movable relation to the ring, and thrusts carried on said latter arm and arranged to cause said springs to yield toward each other when the arms are moved toward each other.

In testimony whereof I hereto afiix my signature in presence of two witnesses.

GEORGE E. SHIPPEY.

WVitnesses:

JNo. J. WHITTLESEY, W. E. BAec.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. c.

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