US1325092A - And one-half - Google Patents

Description

F. M. HENSHAW] SPRING CUSHION.

APPucATmM. FILED-mm. 1. 1919.

1 ,$325,092. Patented Dec. 16, 1919.

wuentoz UNITED sTATEs PATENT oEEioE.

FRED MONTGOMERY HENS'HAW, OF LAKEYACHAELES, LOUISIANA, V.ASSIGNOR OIVONIEI-` HALF TO GEORGE WILLIAM CLINE, OF LAKE CHARLES, LOUISIANA, AND ONE-HALF TO ERLE N. R. HENSHAW, 0F HOUSTON TEXAS.

SEEING-CUSHION.

Specification of Letters Patent.

application filed March 1, wie.V serial No. 280,090.

'new and useful Improvements in Spring- Cushions, of which the following is a specilication, reference being had to the accompanying' drawings.

This invention relates to spring cushion- Y ing devices, and particularly to cushioning devices wherein the cushioning effect is secured by the expansion of a coiled contractilek Seine'- The general ob]ect of my invention is to provide a spring cushioning device which y may be used for a large number of difierent cushioningl purposes, in machines, furniture, and in many other different situations.

And a further obj ect is to provide a dev ice of this character for the purpose of obtaining a cushioning` effect between two parts or objects by the use of a coiled contractile spring arranged in the form of an annulus and which is radially expanded by the movement of said parts relatively toward each other and contracted upon the release of pressure on said parts.

My invention is illustrated in the accompanying drawings, wherein Figure 1 is a vertical sectional view of a cushioning device constructed in accordance with my invention; n

Fig. Q, is a like view to Fig. 1, but showing the cushioning device compressed;

Fig. 3 is a top plan view of the construction shown in Fig, 1, but with the disk 16 partly broken away;

Fig. is a vertical sectional view of a modified forni of the cushion shown in Fig. 1. Y Y Y In these drawings, 15 and 16 designate two parts or members which are to be normally held apart, but which are adapted under pressure or strain to be moved toward each other. The member 16 is flat and diskshaped in the embodiment illustrated, while the member 15 is tapered or semi-conical, the small end ofthe member 15 being' disposed toward the member 16. Extending from the member 16 is a centrally disposed post 17, as it may be termed, which extends through an opening in the center of the member 15 and is provided with a head 18 larger in diameter than said central opening and which, when the parts are expanded, bears against the side wall of the member l5 an Patented Dec. 16, 1919.

appreciable distancefrom` the opening .of

the member 15. k

Surrounding the connecting member 17 or Ypost and urging the members 15 and 16V apart, is a coiled spring 19 ywhich is first bent in a circle so that the spring forms a spring are brought together and faced and thenwrapped with wire, as at 20, or these coiled to forni the usual helix andV isthen confronting ends'of the -spring may be conne'cted to each other in any other desired manner. It will be seen thatwith this construction the coils of the'spring are disposed radially relative to the central post 17 and that the tapering or conical upper surface of the member 15 is engaged by thesecoils of the spring. Now it will be obvious that when the members 15 and 16 are forced toward each other, the conical or tapering face of the member 15 will act to expand the spring by urging the coils thereof radially and that as soonas pressure is released, the coils will contract and exert a wedgng action upon the centrally inclined or tapering inner surface of the member 15, thus urging the member 15 outward on the post 17 until the head 18 has a firm bearing upon the inner face of the member 15.

It will be obvious that the member 15 must be tapered, and it will be obvious that' as illustrated in Fig. 4 both the members 15 and 16 may be tapered if the spring is of suflicient size, .and that provision must be made for the movement of the post 17 or connecting member, but that Aotherwise than this the members 15, 16, andV 17 may be constructed in many different ways to secure a cushioning effect kbetween many different parts.

This spring cushion may be. used as a spring for the seats of chairs Vor seats of automobiles, or `as bed springs. This device can also be used as means for holding valves l. A cushioning device including two elements movable toward or Jfrom each other,

one ot said elements having a centrally tapered face confronting the other element,

and a coiled contractile spring disposed bev tween the two elements and :formed into an annulus concentric to the axis or' the two elements, said spring acting against the tapering face of said element so that a. movement of said elements toward each other will cause the spring to be expanded against its tension.

2. A spring cushion including two coacting elements movable toward or from each other, one or said elements having a centrally tapered inner face, means limiting the outward movement of the elements relative to each other, and a radially elastic annnlus disposed so as to surround `the axis ot said tapered member so that when said tapered member is m ved toward the other member it will expand the anniilns.

3. A spring cushion comprising two elements, one of said elements having acentrally tapered :tace confronting the other element, a centrally disposed headed member engaging the two elements and restricting their movement away trom each other but permitting movement toward each other, and a resilient annulns composed of a helicially coiled spring surrounding said connecting mem-V ber resiliently urging both of said elements away trom each other, said tapered ace extending into the central opening of the annulus and exerting an outward wedging action thereon in all directions when said elements are moved toward each other.

4. A cushioning spring comprising a disklilre element having a centrally disposed post, an element having a central opening through which the post loosely7 passes, said element being concavo-convex land having its convex side confronting the disk-shaped element and said convex side being substantially tapered centrally, the post having a head at one extremity disposed within the tapered element and limiting the movement of' said elements away from each other, and an annnliis disposed concentric to the post and formed of a helically coiled spring, the tapered tace or" said element being movable into the central opening of the annulus so as to expand the coiled spring when the elements are moved toward each other.

In testimony whereof I hereunto aiix my signature in the presence of two witnesses. FRED MONTGOMERY HENSHAW. Witnesses: Y

Loins B. S'rotrr, BEN S. RYAN.

Images