US1142825A - Shock-absorber. - Google Patents

Description

a STATES;

WILLIAM F. LYONS, or KANSAS cm, missonar.

' SINCE-ABSORBER.

' To all whom it may concern:

Be it known that I, WILLIAM F. Lyons, a citizen of the United States, residing at Kansas City, in the county of Jackson and- State of Missouri, have invented certain new and useful Improvements in Shock- Absorbers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of tion.

I and more particularly toa device of that character for use on vehicles, and which is adapted to form a cushion between the vehicle axle and body; the principal object of the invention being to provide means for absorbing the jolt and jar, incident to ordinary travel, otherwise than by the usual vehicle springs. In accomplishing-this object, I have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings,

Figure I is an elevation sorber constructed according to my invention, and indicating its connection with the axle and body of a vehicle. Fig. II is a central longitudinal section of the same.-

' Referring-more in detail to the parts 2-. 1 designates a cylinder having a base flange 2, whereby it may' be rigidly and securely attached to a vehicle body 3 by bolts or-the The cylinder '1 has a central openin 5,

at itslower end preferably provided wit a V downturned circumferential flange 6, and

. aperture 12, and

fixed within said opening by spot Welding,

box 13 through w ch apiston rod 14 is projected; the inner end .of the rod being provided with a piston 15, and the outer Specification of Letters Patent. Application med January 9,

I reference. marked thereon, which form apart of this specifica- My invention relates to a shock absorber,

. which of a shock abf nected with the body and axle of the vehicle respectively, and a quantity of oil sufiicient plrjovided with a stufling Patented June 15,1915. 1914. Serial No. 811,185.

, end thereof with-a collar 16 by which the rod is mounted on the axle 17.

The apertures in the inner end of the small cylinder serve to assist in resisting the shock, as the oil below them and in the sniall cylinder must be forced through them and into the larger cylinder before the piston head in the small cvlinder can be forced up. The number and size of these aperturescan-be varied in accordance with the load carried.

The large cylinder 1 is provided at its I upper end with a port 18, which is normally closed by an automaticvalve 19, and fixed .insaid port is a tube 2.0 through which air may be pumped into the cylinder by any suitable means, and opening through the bottom of the cylinder is a port 21 that is normally closed by a plug 22, but through the cylinder may be drained when the plug is removed.- The cylinder 1 is also provided with a nipple 23, which is normally closed by a cap 24, but which ma be opened to provide for the insertion of oil 25 into'the cylinder; it being the purpose to maintain sufficient oil in the large vcylinder to cover thetop of the small cylinder under normal conditions of use.

- In using the dev1ce, the cylinders areconto cover the cylinder inserted through the ,nipple 23. Air is then pumped into the outercylinderuntil the pressure is sufficient to support a determined load.

When a vehicle equipped'with the device is in use, air pressure in the'large cylinder inder depressed, but should the wheels ofthe vehicle encounter an obstruction the shock of contact of the wheels therewith forces normally retains the piston in the small cylthe piston upwardly againstthecushion of.

compressed air contained within the cylinders and breaks the jar which would other- .100 wise be received by the body of the vehicle;

the pressure of the piston being initially re-. tarded by the partial confinement of the oil,

within the upper'portion of the small cylinder and eventually by the volume of air in the large cylinder, owing to the fact that. oil contained within the small cylinder is forced through the apertures 10 into the larger body. Y

the impact and operation of the piston, the

, It is,apparent.that immediately following and form a seal to prevent the escape and loss of air from the cylinders.

By utilizing a large cushion cylinder and relatively small piston cylinder, a longer thrust is afforded the piston rod in order to secure compression of air in the cushion cylinder, so that substantial vertical play of the running ear is permitted and the cushion develope gradually and without sudden.

shock; it being apparent that the relative sizes of the cylinders may be varied to meet the requirements of vehicles of difi'erent weight or capacity.

Having thus described my invention, What I claim as new therein, and desire to secure by Letters-Patent, is:

1. A. shock absorber comprising a cylinder having a closed end and provided with a valved port, a second cylinder having an apertured head projected into the first cylinder and having permanent sealed connection therewith, a piston dperable in the second cylinder beneath said apertured head, and means for attaching the first named cylinder and said piston to the body and axle of a vehicle respectively.

2. A shock absorber comprising a cylinder closed at one end and containing an air and liquid cushion, a second cylinder projected into the first and having an apertured inner end located below the level of the liquid cushion, a cap closing the outer end of the second cylinder and provided with a stufling box, a piston in said last named cylinder having a rod projected through said stufiing box, and means on the first named cylinder and on the piston for attaching the same to the body and axle of a vehicle respectively.

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

LYNN A. Ronmson, L. E. Cons.

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