US1621962A - Spring action - Google Patents

Description

1,621,962 March 1927' M. STRINGER SPRING ACTION Filed Oct. 26. 1925 mzvz'n sfrz nger.

I A; GHQ m g 35% 2 6mm W- Patented Mar. 22, 1927.

entr es smras MELVIN STRINGER, OF NEW YORK, N. Y.

srn'rne ACTION.

Application filed October 26; 1925. Serial No. 64,801.

My invention relates to improvements in spring mountings, and has especial reference to arrangement of the springs of a vehicle for absorbing shocks and reactions both in upward and downward directions, and is in the nature of an improvement on the subject-matter of my co-pending patent application Serial No. 62,962.

Referring to the accompanying drawings, I have illustrated in Fig. 1 in side elevation, parts being broken away, parts of the spring and chassis of an automobile, embodying an application of my invention. Fig. 2 is an enlarged detail in perspective, partly broken away, illustrating a preferred formation for the bearing surface at the end of one of the spring leaves, and Fig. 3 is a perspective view illustrating the bearing plate therefor.

3 indicates the frame of the machine, and 4 the lower leaf spring, pivotally mounted at 5 at one "end to the shackle 6, as shown, said shackle being in turn pivotally mounted upon the frame 3 as indicated at 7 8 indicates another leaf spring secured adjacent the axle 9, as shown. 10, 11, are U-bolts which ass over the top of the spring 8, which in turn is seated upon the block 12 and retained by the bolt 13, said block 12 having a curved interior portion 14, which rests upon the similarly curved top of the block 15, so that when the U-bolts 10, 11, are drawn down tight by the nuts 16, the spring 8 is held rigidly in position. In order to allow for adjustment of the spring 8, the bolts 10, 11 are loosened and the block 14 ma be rocked upon the block 15, after which said bolts are tightened thereby increasing or decreasing the pressure of the end of the spring 8 upon the spring 4 for making due allowance for dilferences in load, etc.

The outer end of the lower leaf 17 of the spring 8 is preferably cut away at the end as indicated at 18, 19, and is provided with r an outwardly projecting toe 20, the end of which is turned downwardly, as indicated at 21, to enter the hole 22 in the plate 23, said plate being provided with suitable holes such as 24 for rivets 25, for retaining a hearing surface 26 of suitable material, such as brake lining which is adapted to slide upon the spring 4, as shown.

When the lower spring has been depressed and then reacts, instead of violently jerking the body of the car upwardly, theupper spring 8 cushions the sudden reaction by resiliently opposing the lower' spring and absorbing the shock otherwise iiriparted therefrom. By means of the adjustment provided at the co-acting rounded surfaces 14, 1'5, the necessary resilient pressure-ta be applied by the upper spring 8 may be" suitably varied to meet varying conditions of load, by loosening up in the nuts 16 and depressing or elevating the spring 8 until the desired pressure therefrom upon the lower spring 4 is obtained, after which the nuts 16 are drawn down tightly, keeping the sprmg in such adjusted position, and thereproviding properly predetermined resilient re-action to take up or compensate for the upward shocks of jolts referred to.

The present invention is adapted to prevent the rebound or secondary shock imparted to the body of the vehicle as distinguished from the action of the present socalled shock absorbers. Shock absorbers now used are merely an attempt to cushion the jolt of the vehicle, whereas the arrangement hereinbefore described prevents the rebound or secondary shock after the wheel has entered a rut or met with some other obstruction, and by thus preventing the reaction or rebound, the riding is not only much easier but the wear and tear on the vehicle is reduced to a minimum.

Of course it will be understood that various modifications may be made in the con struction and arrangement of parts without departing from the spirit of the invention as claimed.

I claim:

1. In combination with a vehicle, an axle supported spring having a shackle for supporting the body of said vehicle, a second spring free from the body of said vehicle adapted to continuously oppose the reaction of said first mentioned spring at a point adjacent the shackle thereof, and in combination with said second spring means for varying the degree of its said opposition.

2. In combination with a vehicle, an axle supported spring having a shackle for supporting the body of said vehicle, a second spring free from the body of said vehicle adapted to totally and continuously oppose the reaction of said first mentioned spring at a point adj acent the shackle thereof, and in combination with said second spring means for varying the degree of its said opfirst spring between the ends of the latter.

3. In combination with a vehicle, an axle supported spring having a shackle for supporting the body of said vehicle, a second spring free from the body of said vehicle adapted to continuously oppose the reaction of said first mentioned spring at a point adjacent the shackle thereof, and in combination with said second spring means for varying the degree of its said opposition, said second spring secured to said first spring between the ends of the latter, and having a free end in sliding engagement therewith.

4. In combination with a vehicle, an axle supported spring having a shackle for supporting the body of said vehicle, a second spring free from the body of said vehicle adapted to continuously oppose the reaction of said first mentioned spring at a point adjacent the shackle thereof, and in combination With said second spring means for varying the degree of its said opposition, said second spring secured to said first spring between the ends of the latter, and having a free end in sliding engagement therewith, said free end comprising a bearing surface, and means for engaging said bearing surface in the end of said spring.

In testimony whereof I hereunto affix my signature.

MELVIN STRINGER.

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