US1539196A - Snubber - Google Patents

Description

I. E. LlTTEN May 26, 925.

SNUBBER Filed July 5, 1924 P e Me2e, an. a,

UNITED 'QSTA m n 1.1mm, or omen, cmroama.

- rough 'rss v 1,539,196 PATENT OFFICE.

szwnnim. I

Application fled It!! 6,

To all whom it may concern:

Be it known'that I, Ian E. LI'ITEN a citican of the United States, residing at .ran in the county of Orange and State of Ca i-' fornia, have invented new-and useful Improvements'in Snubbers, of which the following isja specification.

- This invention relates to snubbers.

The primary object of this invention is to provide a device attachable to an automobilev frame-of ordinary construction, which will permit the free up and of the spring while the vehicle is traveling over fairly smooth roads and which will retard the action of the spring from returning to normal position on traveling over roads A further object of this invention is-to provide a cheap, simple and durable device to actuate normall attachable to the spring and frame of an automobile, which will rmit the spring fan with ease upon traveling over fair smooth roads.

Other objects will e made manifest in the following detailed description and pointed out specifically in theappended claim, refwhich is held by bo ts 16 to the outer ends ofthe Y ignate similar erence being had to the accompanying drawings, in which:

igure 1 is a side elevation of the front portion of an automobile frame showing m improved snubber attached, thereto,

ig. 2 is a vertical section taken substantially on the line 2-2 of Fig. 1

F1g. 3 is a vertical section takeii throughthe frame and spring of the automobile, showing the snubber in elevation, parts being broken away, and showing the rear position of the'element's forming the improved de-- to have hit a large bump in the road, and

Fig. 4 is a horizontal section taken sub 4-4 of Fig. 3. Referrin to the-accompanying drawings in which similar reference characters desarts, 9. frame F is supported e usual cantilever spring S means of U bolts upon the axle of a vehicle 11. Mounted ad'acent by means of t the U bolts 10 is a cylinder 12provide with H a pair of brackets 13 which are held respectively on the to and bottom of. the spring S by means of be ts 14. 4

As clearly shown in Fig. 2, the bolts 14 snugly rest upon each side of the spring S. A air of yokes 15 are secured b means of brackets 13 e, with two difl'erin down movements 1924. Serial in. 7mm.

and serve to hold the c the spring S. -The cy inder 12 is provided internal diameters, the uppermost being. t e larger as'shown at 17, and the lowermost 18. vided with a closure integral with the sides thereof. The up or end ofthe cylinder 12 has a removab e closure 19 internally threaded therein and having a boss 20 projecting from the center theredf, whichis externally threaded to receive a packing gland member 21. p a

A piston 22 is adapted to reciprocate with in the cylinder 12 andis provided with a plurality of perforations or apertures 23 being the narrower as at The lower end of the cylinder 12 is r0- linder 12 rigidly tn extending therethrough. Restingon the upupon the frame F. v The horizontal shank 28 is provided with a nut and washer or equivalent means for limiting the outward movement of the piston rod 26 thereon.

, The cylinder 12 is filled with oil or equiva- I lent fluid and the piston 22 is loosely fitted within both the enlarged and reduced por tions of the cylinder12, so that the oil within the cylinderniay freely pass between the periphery of the piston and the cylinder walls. When the piston is in the upper end of the cylinder 12, the oil may more freely pass around the piston than when the iston 'is located in the lower section of the cylinder, or that section of reduced diameter.

The operation of the device is as follows: The vehicle upon traveling over comparatively smooth roads will cause the piston 22 to reciprocate back and'forth slightly in the enlarged portion of oil may freely pass around the iston 22 when in this portion of the cylinder, there is no retarding action performed by the snubber which prevents the spring immediately springing back into normal position. owever, upon the vehiclestriking a comparatively rough road, a bad bump will cause the piston 22 to be pushed down into the lower end of the cylinder 12. The oil in this part of the cylinder cannot escape or tion shown in Fig.

portion of the cylinder. Upon the downpivot'ally secured, as at 27, to ahorizontal shank 28r1gidly mounted the cylinder. As the 100 cylinder,

ward movement of the piston, a plate 24 is caused to rise upon the reduced end 25 of the piston rod 26 b the oil rushing through the apertures 23. {lpon the spring S tending to return to normal position and withdrawing the iston 22 out of the lower end of the cylin er 12, the plate 24: will drop down upon the piston closing the apertures 23. The oil in the cylinder must then pass between the periphery ofthe piston and the but as this action 1s not free, as previously stated, the tendency of the spring to return to normal immediately greatly retarded.

This invention has been described but modifications thereof may be devised withoutdeparting from the spirit thereof, and

it is to be understood that such modifications come within the scope of this inven-' tion.

I claim':

A snubber comprising a cylinder, one end "of which is (provided wlth a reduced'bore, a fluid in sa'i I cylinder, a piston adapted to reciprocate'm said cylinder, means permitting said piston to be easily forced from one end to the other of said cylinder during its downward stroke, and means tending to prevent the movement of said pistonin the opfiosite direction for substantially the. first alf of its return stroke.

In testimonywhereof I have signed my name to this specification.

IRA E. LITTEN.

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