US238478A

US238478A - Wagon-spring

Info

Publication number: US238478A
Authority: US
Publication date: 1881-03-01
Anticipated expiration: 1898-03-01

Description

W.'R. ADAMS. Wagon Spring.

No. 238,478. Patented March 8,1881.

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UNTTED STATES PATENT OFFICE.

WALTER R. ADAMS, CF SHERMAN, CONNECTICUT.

WAGON-SPRING;

SPECIFICATION forming part of Letters Patent No. 238,478, dated March 8, 1881. Application filed February 20, 1880.

To all whom it may concern Be it known that I, WALTER R. ADAMS, of Sherman, in Fairfield county, in the State of Connecticut, have invented a new and useful Improvement in Wagon-Springs; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, wherein Figure l is a perspective view of my improvement. Fig. 2 is a side elevation of the same. Fig.3 is an elevation, showing the clip in section. I

The object of my invention is to provide a spring of variable resistance to tlexure, whereby the strength or power of the spring may be adjusted as to the load which itmust carry and the excessive depression of the wagonbody under unusual load may be avoided.

My invention, therefore, consists in a wagonbody and side-bar frame provided with connecting-sprin gs, which are rigidly fixed at one end to said side bar, and made variable as to tension by adjustable clips; also, in connection with the-above, cross-springs; and, also, in the mode of attaching the first-named springs by bending them around the ends of the side bars, so as to inclose the same.

That others may fully understand my invention, I will particularly describe it.

A is a wagon-body, and B B are the side bars, which, as usual, are mounted upon the running-gear by means of front and rear cross bars or bolsters, C. The bodyAis supported upon springs D, either directly or by means of intermediate cross springs, E, as may be preferred. The spring D is attached to the side bar, B, near its ends, and, though not essential, I prefer to lap the end of said spring over the end of the side bar, so that the latter is thereby inclosed between the folds of .close the end of said bar,

the spring, (see Fig. 3,) and is thereby relieved of a large portion of the strain to which it would otherwise be subjected.

The spring D may be attached to the side bar by means of screws or bolts, if desired; but the principal means of attachment is the adjustable collar or clip F, whichincloses both spring and side bar. A set-screw, 9, serves to fasten the clip F in place, and permits it to be made fast or loose at pleasure. When loose it maybe moved forward or backward, and its position determines thelength, and consequently the power, of the free end of the spring D. Hence, when the wagon is about to bear an unusual load the clip may be moved to shorten the spring, and the load will then be carried as high and as easily as a lighterload would be carried with a longer spring.

Having described my invention, what I claim is- 1. A wagon-body, A, and side-bar frameB C, connected thereto by means of springs D, rigidly connected at one end to said side bars, combined with adjustable clamping-clips F, whereby the effective or free length and strength of said springs may be independent- 1y varied.

2. The wagon-body A, and frame composed of bars B B and C C, combined with springs D D, which are made adjustable by means of the movable clampingclips F and the crosssprings E, substantially as set forth.

3. The side bar, B, combined with the spring D, the fixed end whereof is turned over to inand rigidly secured thereto, as set forth.

WALTER R. ADAMS.

Witnesses:

C. E. MASON, LEVI P. TREADWELL.