US66917A - Improvement in wagon-bkakes - Google Patents

Description

S. WARREN.

Wagon-Brake.

Patented July 16, 1867 lnvenior.

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TO ALL WHOM IT MAY CONCERN: D

Be it known that I, SETH WARREN, of Hollis, in the county of Cumberland, and State of Maine, have invented a new and useful Improved Automatic Brake; and I hereby declare the following to be a full, clear, and exact description thereof, which will enable others to make and use my invention, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 showsa plan of the axles and frame upon which a carriage body is placed, with my improvement thereto attached.

Figure 2 is a side view of the same.

My invention has in view the production of an automatic brake, orone that operates by the weight and a certain motion of the wagon body, by which weight and motion the brake is brought to bear and press against the rear wheels of the vehicle. I do not claim broadly the operating a brake by the wagon body or the weight thereof, because I am aware that a number of patents have been granted for different methods of braking up vehicles by means of the weight of the carriage body and the load thereof, as well as by the drawing of the animal upon the carriage-shaft or arms. I will now proceed to describe my invention with reference to the several portions as delineated in the drawings. i

a shows the forward axle-tree of a carriage; b, the rear axle-tree of the same; '0 shows the rocker united with the forward axle-tree by the bolster-pin as is usual; cl d" 11 show the bars, which, in carriages as commonly'constructed, unite the two axle-trees. In my invention, however, these are not connected with the forward I axle-tree or the rocker, but are rigidly attached to a cross-piece, e, instead of the forward axle-tree. Parallel with this cross-bar e, and such distance in front thereof as the operation of the brake requires, is the second crosspiecef, united to e by the rods or bars 72,. These rods or bars it pass through the rocker c in holes made for that purpose, and so that the rocker moves easily thereon in the space between the two cross-bars c and f. Attached to the rocker are the slides it, connected by the cross-piece j, and resting upon the bars d d d. These slidesz' pass through mortises or apertures on the cross-piece e atm m, so that as the rocker c is moved in the space between a and f, the sliding-frame or piecesz'z'j are drawn backwardor forward on the bars 01 d d, that is to say, when the draught upon the pole or. shafts of the carriage draws the rocker a so as to press against the crosspicccf, or when by a backward push upon the p'oleor shafts the rocker is pushed against e, the sliding-frame or piecesiij move with the rocker 0. Through 2'2, at the proper distance front of the rear wheels, is attached the brake-shaft n, which at the centre has the crank a resting on d". This shaft is moved backward and forward with the pieces 2'2, as indicated in fig. 1 by the dotted lines. The crank o prevents the feetp of the brakes from being turned downward by the forward revolution of the wheels, as would be the case if the shaft or of the brakes wcresimply straight. 9' shows an open staple to confine the crank. s is a staple to steady the frame ii The operation of my invention is as follows: When the wagon is being drawn along a level surface, the rocker c is drawn against the barf, as indicated by the dotted lines, and the position of the brake 'n. and frame ii is as shown in the same way. Thus the brake is free from the wheels, but when the carriage is descending a hill, the holding back of the'animal or the sliding forward of the carriage body brings the brakes 1; against the rear wheels which are supposed to beattached at 1. The brake is prevented from turning downward by the forward revolution of the rear wheels by means of the crank 0 resting on d. as before explained. The feet off the brakes 1) turn upon axes, so as to adapt themselves readily to the wheel by the motion thereof. Thus the progress of the vehicle down the hill or descent is impeded by the weight ofand motion of the carriage body itself. When the carriage is backed it will be perceived that the brakes are then brought in contact with the rear wheels. the same as when the vehicle descends a hill, but the motion of the wheels being in such case a backward one, and the brake being intended to turn easily on the shaft in the pieces it, the brake will then by the first motion of the wheels be raised, as seen in fig. 2, 17, thus relieving the wheels immediately from the friction of the brakes. W'hcn the animal agains begins to draw forward, the sliding-frame z'z'y' will be drawn into the position shown by the dotted lines in fig. 1, and the brakes will thus drop again to the proper position to be used. 7

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination and described arrangement of the sliding-frame 1, ij with the rocker c, the pieces ii Working through-the holes in the cross-bar c, and having the brakes with the crank-shaft 0 all operating as and for the specified purposes.

2. Thecombination and arrangement of the two cross-pieces e andf, united by the rods h k, upon which moves the rocker c, as and for thepurposes set forth.

3. The brake, when so arranged by means of the crank o as to press against the wheel when the carriage has m forward motion; and to be thrown up and thus relieve the wheels in backing, in the manner and for the purposes herein set forth and described.

SETH WARREN.

Witnesses:

WILLIAM HENRY Cmm onn. HENRY C. HOUSTON.

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