US1576152A - Shock absorber - Google Patents

Description

patented Wlan, 9,

irrita RUDDLPH C. G. STAATS-OELS, 0F BROKLYN, NEW YORK.

snocK insomma Application led July 11,

T 0 all 10720722 t may concern; i Y

Be 1t known that I, RUDOLPH C. Gr. Sfrna'rs- Onis, a citizen of the United States, resid-.

ing at Brooklyn, -county of Kings, and State of New York, have invented certain new and useful Improvements in Shock Absorhers, of which the following is a specification.

rlhis invention relates generally to shockl absorbers for automobiles, the invention having more particular-reference to a shock absorber utilizing air compression'. e

T he invention has 'for an object the provi-` sion of a novel and improved shock absorber of the piston and plunger type which operates by air compression, a furtherobjectof the invention relating to the increase of general cushioning eiiect by the use of a plurality of cylinders that telescopeone into the other.

For further comprehension' of the invention, and of the objects andV advantages' thereof, reference will be had to the following description and accompanying drawing, and to the appended claims in whichthe various novel features of the invention are more particularly yset forth.

Fig. 1 of the drawing is a central vertical sectional view of my improved shock absorber.

Fig. 2 is a transverse sectional view thereof taken on the line 2-2 of Fig. l.

Referring now to the drawing, the reference numerals 10, 11 and 12 designate three cylinders which are closed at the bottom by the bottom members 10', 11 and 12 respectively. rEhese cylinders are open at their upper ends, thetop cylinders 10 fitting intor and forming a plunger in the intermediate cylinder 11, while the latter lits 'into the upper end of the lower cylinder 12 and forms a plunger in the latten Fitting slidably in i the top cylinder 10 is a plunger 14. This plunger 14 is formed on its upper end with an upwardly projecting ear 15, while the cylinder 12 has formed on the bottom thereof a downwardly projecting ear 164 these ears 15 and 16 forming the medium of attachment of the device to the body and aXle of the automobile, Vand being here shown as provided with apertures 17 to receive fastening pins or bolts. It will be understood'of course that any suitable provision maybe made for att-aching the plunger le and the cylinder 12 to the proper automobile parts. The plunger 14, and cylinders 10 and 1,1 have their upper halves of diminished di- 1924. Serial y No. 725,411.

ameter, forming shoulders 2O that are adapt-l ed to be engaged by rings 21,22 and 23 screwedinto the respective cylinders 10, 11, and 12 to prevent longitudinal displacelment of the various parts from one another. t

Fixed at its lower end to the bottom 12 of the lower cylinder 12 is a tube 25 that extends upwardly through the bottomsof the other cylinders 10 and 11. This tube is surrounded `by an exterior sleeve 26 which is of approximately the same length as the tube and which lits 'snugly in the apertures provided in the bottomsof the cylinders 110 and 1l. The tube 25 andwsleeve 26 are formed with rows of registering apertures 27 and n 28 that are placed throughout the length of said sleeve and tube, these apertures constituting' ports through which air passes into and out of the cylinders 1O,11,and.12. At its upper end, the tube sleeve 26'fits frictionally in a bushing 29 -itted into the lower end, of a longitudinal passage 8O inthe plunger 114, this Ypassage accommodating the tube and sleeve when the parts move in a collapsing direction. Fixed` at its ends to the sleeve 26 is a pin 31 that passes through short lonapertures 28 and 27 in the sleeve and tube are 1n registry with one another'.

gitudinal slots 32 in the tube 25, the pin enn gagmg the upper ends of the slots when the In the operation of my improved shock.

absorber', assuming the parts to be in the relative positions shown in the drawing, an initial downward movement of the plunger 14 will cause the sleeve 26 to move downward on the tube 25 until the pin 31 engages the lower endsfof the slots 32, the friction be1 tween the sleeve 26 and bushing 29 being greater than that between the tube 25 and the sleeve. The ports leading from the various cylinders are thus immediately closed,rand further downward movement of the plunger, or of the upper cylinders 10, 11, will cause the air in the variouscylinders to be compressed. As soon as the recoil movement starts the sleeve 26 is moved upward to open the said ports,allowing the air to escape. By this means`- any recoil effect from the air is prevented-the device utilizing` only the cushioning edect thereof as the springs of the automobile compress.

If desired I may vary the degree of air compression resulting in each cylinder as the downward movement of the parts occurs, which may be effected byslightly varying the positions of the openings in the lower parts oi the sleeve so that the latter do not move entirely out of registry with the openings in the tube at any time.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent of the United `States is as follows:

l. A shock absorber including a cylinder,

a plunger operable to vary atmosphericpresi sure therein, a valve device including an apertured tube secured at oneendV 'toi saidl cylinder andi communicating with the yatmosphere, and an apertuiied sleeve movable with said plunger longitudinally of said tube to bring the'y apertures',` in the sleeve into and outr of registry with those in said tube to open and shut oiii" comnmnicatio'n between said cylinder and the; atmosphere.

2. A shock absorber including a cylinder, a plunger'operable to vary atmospheric piressure therein, and a valve device including a tube and a'sleeve each havingapertures, one

lthe plunger is moved in oneV directionV to bring the apertures in said elements outl of registry tok close communication between said cylinders and the atmosphere.

4. A shock absorber for automobiles comprising a cylinder` a.. tube fixed at its lower end in the bottom of saidcylinder and communicating with the atmosphere, a plunger, a sleeve surrounding said tube, said sleeve being' rictionally engaged with said plung er, and (3o-operating means on said sleeve andtube arranged to permit of limited sliding movement of the sleeve on the tube, said sleeve andtube having apertures therein adapted to bemovedinto and out of registry by sliding movement of the sleeve on the tube.

5. A shock absorber for automobiles comprising a plurality of vertically disposed cylinders itting; tele'scopieally intoY one another, a plunger'itting into theltop cylinder, a tube fixed at its lower end in the bottom of thelow'er cylinder, a sleeve-'surrounding Vsaidtube,fsaid sleeve and tube ex-vr tending upward through the bottoms ofthe upper cylinders, said sleeve being rictionally engaged at' itsv upper end with the said plunger, a pin fixed in said sleeve and passingthrough short' verticalY slots inthe said tube to limit sliding movement of the sleeve on the tube, said sleevel and tube having rows of apertures spaced substantially throughout thelength thereof, said apertures being adapted to be moved into and out of registry with one'anoth'erby sliding movement of the sleeve on the tube.

In testimony whereof I have atliXed my signature.

RUDOLPH G. G. STAATSOELS.

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