US98050A - Perry g - Google Patents

Description

P. G.-GARDINER. y

Car Spring,

' No. 98.050. Patented Dec. 21,1869.

f Zre'now' "7@ hindert Staten PERRY G. GARD'INER,

or NEW Yon-K, NQY.

Lettersr Patent No. 98,050, dated December 21, 1869.

IMPaovnMnNr 1N" can-SPRINGS.

The Schedule referred to in these Letters Patent making part of the same v To all whom it may concern:

Be it' known that I, PERRY G. GARDINER; of the:-

city and State of New York, have invented new anduseful Improvements in Railway-Gar Springs, and

-that thelf'ollowing is a full, true, and exact description of my said improvements, reference being had to the drawings accompanying and making part of this specification. y

The natureof my improvements consists- First, in the combination of a cellular India-rubber cylinder, with a coiled spiral steel spring upon the exterior surface, or,.in place of this spiral spring, a se ries of iron rings, embracing the cylinder at equal distances apart, and having the cells of the rubber cylinder'filled witha packing of' cork 'cotton or other elastic orfibrous material, or with or without steel spiral springs, and having also a central cell, containing a. spiral spring, through which passes acentral compound-stud or bolt, having, at the top, a screw and nut, by which the cap and sole or base of' the spring are secured to the rubber cylinder, and the spring'set, or the parts secured in place, to form the complete spring; and,

Secondly, in the combination of a perforated rnbber cylinder, with or without rings to support it, and a central cell, packed with fibrous or elastic material; and also,

Thirdly', in the dovetail lip or rim to the cap of the spring. I

l The figures in the drawings will be referred to and described in detail in the following description.

In all the figures similar letters represent similar parts.

Figure 1 of the drawings representsa vertical crosssecti'on of the spring, through the centre, and v Figure 2, a horizontal section of the same 'at the line A B in fig. 1.

A A is an India-rubber cylinder, pierced with circular cells a a from top to bottom, the central cell a being of larger diameter than that of those surroundin it.

gThese cells c a should be of equal size, and at equal distances apart and from the cent-re of the rubber cylinder. In the figure they are represented as eight in number, in addition to the central cell a', but the precise number here represented is not essential.

b is a. spiral steel spring in the central cell a', cxtending from top to bottom of the spring.

c c' are the central stud and bolt.

d d are iron rings, embracing the rubber closely at right angles to the axis of the spring, and at equal distancesfrom each other.

The manner in which the central stud and bolt are united, and hold together the top plate e and base or i solcfof the spring, by means of the screw and nut g` at the head, ls shown in fig. 1.

The cells a a are closely packed with cotton, or l other fibroelastic rial, and for this purpose an apparatus which I call a'sprlng-packer should be used, which encloses the India-rubber cylinder and rings, and holds them rigidly in` place, lwhile the packing is being pressed into the cells.

Figures 3 and 4 represent, in similar sections oi' figs. 1 and 2, a substantially similar spring, varying from that just described only bythe insertion of steel spiral springs b' in the cells a a, part of which is filled with packing, and part is without the packing.

When the spring is constructed as represented in figs. l and 42, the cap and base or sole of' the spring are made to compress lthe rubber between them, by the screwing on the nut g, which causes the rubber cylinder to bulge, as represented by the dotted lines between the rings d iniig. 1, whereby the rings are held securely in their place. A

v When the spring is under the weight of the car, the further bulging of' the rubber holds the rings so that they cannot slip or be shaken out of' their proper positions.

In place of the rings d, a spiral spring may be substituted, extending from`the cap to the base, and closely embracing the rubber cylinder, so as to answer the same purpose of' compression as the rings, and ,operates also by its elastic force in a vertical direction. v

When the rings d are used, the packing should be,

performed with cap and base on the springand the cap is perforated with holes, to correspond with the cells, and through which the packing is forced.

The holes in the cap, when the packing is completed, should be stopped with plugs of' cork, driven in so as to touch the surface of the packing, and Athe outside of the plugs cut olf even with the surface of the cap.

Figures 5 and 6 represent a rubber cylinder, A, with rings d, with only one central cell, a, filled with packing.

No bolt is used with this form of spring.

The ca-p e has its rim projecting over the upper edge I of the rubber, in a dovetail form, as shown ath, which, when the spring is compressed by the weight, and the rubber bulges under the pressure, grips and holds the rubber so that it will not spring out from the cap.

In the compound spring,as herein described, my

invention does not consist in any ofthe parts described in detail, but myinvention consists in the combination and arrangement as described.

A great saving is made in` the amount of'mbber required in this construction of the spring, and, conse- .'lquently, a. great reduction inthe expense of the spring,

while the power and eil-.istie action of the spring are vgreatly enhanced.

` What I claim, therefore, ns my invention und improvement, and for which I desire Letters Patent, is`

Il. The combination of the. perforated cullular India.- rnhher cylinder, 'surrounded und compressed by the rings, or. exterior spiral spring, with the packing of the cells with cOttQnror other similar fibrous material, with or without spiral sprigs'in the cellsyfand with :i centrall spiral in a central cell, through which the bolt passes, constructed, arranged, and operating substantially :is described.

senso 2. The combination of rubber cylinder with its equi' distant perforation, surrounding a. central perforation, packed as aforesaid, without the exterior spiral or rings'. i

3. The duvet-oiled lip or rim on the cap, incomhina.: tion with the rubber cylinder' and packing, constructed and operating in the manner and for the purposes described.

` P. G. GARDINER.

Witnesses:

S. A. STODDER, GEO. W. Fox.

Images