US233075A - Spring-wagon - Google Patents

Description

(No Model.)

M. CONRAD.

Spring Wagon.

No. 233,075. Patented Oct. 12,1880.

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NITED STATES PATENT FFICEe MARTIN CONRAD, OF CHICAGO, ILLINOIS.

SPRING-WAGON.

SPECIFICATION forming part of Letters Patent No. 283,075 dated October 12, 1.880.

Application filed April 20, 1880.

To all whom it may concern:

Be it known that I, MARTIN CONRAD, of Chicago, in the county of Cook, and State of Illinois, have invented a certain new and useful Improvement in Spring-Wagons, of which the following is a specification.

In spring-wagons having brakes working from the wagon -box the application of the brakes throws the box forward on the springs, which have to resist the full reactive force of the brakes, and are very liable to be strained or broken. To relieve the springs and prevent the forward movement of the wagon-box chains and straps have been used extending from the reach or rear axle to the bottom of the box; but when the wagon is loaded and the springs are depressed the chain or strap hangs slack and is no longer effective. Rigid .rods have also been tried for this purpose;

but they become bent by the vertical movement of the wagon'box on the springs.

The object, therefore, I have in view is to produce a device for preventing the forward movement of the wagon-box on its springs, which will be equally effective whether the wagon is loaded or not, and willnot interfere with the free vertical movement of the box. This I accomplish by the use of a rigid rod extending from the reach or rear axle to the wagon-box, and connected to the box by a pivoted link, which is limited in its movement in a backward direction, the effect being to allow the box to play freely up and down on the springs, but to prevent any forward movement of the same.

My invention therein consists in the peculiar devices for controlling the movement of the wagon-box, as fully hereinafter explained, and pointed out in the claims.

In the accompanying drawings, forming a part hereof, Figure 1 is an elevation of a spring-wagon with my improvement attached; Fig. 2, an elevation of the attachment on a larger scale; Fig. 3, a sectional view, showing, in elevation, the pivoted link-connection; and Fig. 4 an elevation, showing a modified form of the pivoted link.

Like letters denote corresponding parts in all of the figures of the drawings.

A is a rigid metal rod, which is connected at its lower end to the reach or to the rear (No model.)

axle. rod to the axle, which bolt is screw-threaded and provided with nuts (0 b, for adjusting the length of the rod.

To the upper end of the rod A is pivoted, by a bolt, the link C, which link, at its other end, is pivoted, by a bolt, between the lugs of a plate, 1), which is secured to the wagonbox. The lugs of the plate D are connected together on their rear sides in casting, so as to form a shoulder, d, which prevents the link C from swinging backward, but allows it to swing freely forward. By these means the pivot of the link C in'the plate D can move vertically, but cannot move forward in a horizontal position, no matter what its vertical position may be.

To control both the backward and forward movements of the wagon-box on its springs I can use two of my improved connections, and run them from the center of the reach in opposite directions to near the end of the wagonbox.

The precise means for limiting the movement of the pivoted link in one direction could be changed in a number of ways. In Fig. 4 is shown one modification, in which the shoulderd is dispensed with and the link is made of L Shape.

What I claim as my invention is- 1. In a spring-wagon, the combination, with the wagon-box and running-gear of the plate D, secured to the wagon-box, the downwardlyhanging link C, pivoted to said plate at its upper end and limited in its backward movement on such plate, and the rod A, pivoted to the lower end of the link C and pivotallyconnected with the ninning-gear, substantially as described and shown.

2. In a spring-wagon, the device described for preventing the forward movement of the wagon-box, consisting of the rod A, connected to the rear axle by bolt B, having adjusting and securing nuts, the straight link C, and the plate D, secured to the wagon-box and having shoulder d, substantiallyas set forth and shown.

MARTIN CONRAD.

Witnesses LoUIs SOHIFFLY, Ozrrro NEwHoUsE.

A bolt, 13, is shown for connecting the

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