US1402967A - Shock absorber - Google Patents

Description

0. SAMAD.

SHOCK ABSORBER.

APPLICATION FILED JULY 6,1920.

1,402,9 7,- Patented Jan-10,1922.

N l T E ST OMIN SAMAPD, 0F CINCINNATI, OHIO.

snocx ABSORBER.

the city of Cincinnati, in the county of Hamilton and State of Ohio, have invented certainnew and useful improvements in Shock -lhsorbers, of which the following is a full, clear, and exact description, reference being had to the drawings forming part of this specification.

My invention relates to devices used in con nection with leaf springs for insuring a flexing of the springs without a jar or shock imparted to the body supported thereby. The chief use of such devices, known as shock absorbers, is in connection with vehicles and more particularly motor vehicles where the rapidity of travel exposes thesprings to sudden jars which impart themselves to the vehicle supported thereby,

According to my observation the worst jars and vibration ofmotor vehicles on them is due to the fact that the shackles by which they are suspended permit of a straight upward thrust on the ends of the springs,

thereby permitting a mere drop to the vehicle and s Jring assembly with subsequent recovery w ich gives unpleasant motion and jarring to the occupants of the vehicle.

Leaf springs are intended to lengthen out as their centers are pushed in a direction opposite the bow of the spring, but as a matter of fact this lengthening-action does not result in the swinging of the spring shackles to an extent desirable in avoiding jarring motion.

It is the object of my invention to trans mit the thrust at the bow of a leaf spring to one or both ends thereof, in such a way that the spring is forced to expand and swing at the shackles, thereby causing an even full flexing of the spring without quick shocks and jerks.

This object I accomplish by that certain construction and arrangement of parts to be hereinafter more specifically pointed out and claimed.

In the drawing, the figure is a side elevation detail of my novel device.

The body of vehicle (not shown) is supported on channel bars 1, which may or may not have depressed ends 2 for the outer spring shackles. The method of mounting the body irons of vehicles 011 the springs Specification of Letters Patent.

Patented Jan. 10,1922.

Application filed July 6, 1920. Serial No. 394,061.

varies to such a degree that the above is merely an example of one form of. construction, it being understood that any formmay readily be adapted to my purpose.

The spring 3 is of a well known spring type having the central clip 4, and the end 5. Theinvention will ordinarily be applied to the outer end only of leaf springs although it is readily adaptable to both.

The spring shackle or suspending means is of special shape similar to a numeral '7. It is pivoted to the spring end at 6, and the body iron at 7, and extends in the form'of an angle, outwardly from the pivot 7, as at S, and then downwardly at a slant, as at 9, to the point 6.

The portion 8 is continued inwardly of the structure past the pivot '7, as indicated at 9 where it is pivoted to the forked end 10 of the bar 11. The bar or lever 11 is fulcrumed in a bracket 12 mounted on and depending from the body iron and extendsto a point where it is loosely cradled in the bifurcated end 13 of a post 14.

The post 14: is mounted 011 the central clip of the spring and moves with it, so that when the wheel carried at the center of the spring is jarred on the road it will force the post upwardly a distance depending on the flexing of the spring.

As the post moves up it swings the lever 11 and forces down the inner end of the shackle member. The outer portion of the shackle then swings on the pivot 7 and causes the pivot at 6 to swing in an arc which will enforce an outward movement of the end 5 of the spring.

This spring movement is the desired one for an even regular motion which is without shocks or jars, since the spring cannot flex without its ends swinging outwardly and upwardly with a regular and slow recovery indeed from one point of view the device gives tothe spring the same movement as a heavier spring of twice the length possesses.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

1. In a shock absorber, the combination with a frame and axle, of a spring supported on' the axle, a shackle pivoted on the frame for coupling the spring to the frame, with the shackle pivoted to the spring below the frame pivot, and the shackle extended inwardly beyond this Pivot, a lever pivoted. to the frame, with one end connected to the extended inner end'of the shackle and the other end beyond the pivot connected to the axle, whereby'the vertical shock between the axle and the frame will be trans mitted in opposite directions, and the shackle will tend to exert a horizontal movement tothe spring.

2. In a shock absorber, the combination with a frame and axle, of a leaf spring supported on the axle, a shackle pivoted on the frame for coupling the outer end of the springto the frame, with the shackle pivoted to the spring below the frame pivot, and the shackle extended inwardly beyond this pivot, a lever pivoted to the frame, with one end connected to the extended inner end of I the shackle, and the other end beyond the pivot connected to the axle, whereby the vertical shock between the axle and the frame will be transmltted in opposlte dlrectlons,

- axle,-with one end of the lever connected to the extended inner end of the shackle, and

the other end beyond the pivot connected to the axle, whereby the vertical shock between the axle and the frame will be transmitted in opposite directions, and the shackle will tend to exert a horizontal movement to the spring.

'OMIN simian.

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