US553085A

US553085A - Wagon-brake

Info

Publication number: US553085A
Authority: US
Publication date: 1896-01-14
Anticipated expiration: 1913-01-14

Description

(No Model.)v

L. S.- WHEELER.

WAGGN BRAKE. No. 553,085. Patented Jan. 14, 1896.

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UNITED STATES 'PATENT OFFICE.

LAUREN S S. TWIlELElt, OF TYRO, KANSAS.

WAGON-BRAKE.

SPECIFICATION forming part of Letters Patent No. 553,085, dated January 14, 1896.

Application filed May 1l, 1895. Serial No. 548,947. (No model.)

To @ZZ whom, it may concern:

Be it known that l, LAUREN s S. .VHEELER, of Tyre, in the county of Montgomery and State of Kansas, have invented certain new and useful Improvements .in Wagon-Brakes, of which the following is a full, clear, and exact description.

This invention relates to certain new and useful improvements in vehicle-brakes, and especially t-hat class of brakes designed for employment on heavy vehicles-such as farmwagcns, trucks, and the like-where it is desirable to secure the greatest possible pressure upon. the wheels; and the object of the invention is to provide a brake of this character of a simple, inexpensive, and efficient nature.

The invention comprises an arrangement of levers and rods at each side of the vehicle connected with the brakeshoes arranged in position-to bear against the wheels and adapted to be operated by a brake-lever, the arrangement of said levers and rods being such that a wedging action is exerted upon the brake-shoes to force the same against the wheels with a very considerable force when the brake-lever is moved a very slight distance, and when said lever is disengaged from its guard the parts are so arranged and constructed as to be moved by the strain exerted in setting the brakes to their original positions, with the brake-shoes out of contact with the wheels.

The invention also contemplates certain novel features of construction whereby certain advantages are obtained, all as will be hereinafter fully set forth.

The novel features of the invention will be carefully deiined in the claims.

Figure 1 is a side elevation representing a portion of the wagon-bed with my improved brake mechanism applied thereto; and Fig. 2 is a plan view of the brake mechanism, the wagon-bed being removed.

ln the drawings, 1 represents the bed of the wagon, which may be of any preferred construction, and 2 represents flat plates bolted or otherwise secured to the sides thereof and provided with threaded shanks 3 extending below the bed into engagement with the crossbars 5, said shanks being provided at their lower ends with nuts 4, as clearly seen in Fig. l. Two of the cross-bars 5 are shown in the drawings, and to the under sides of these are secured longitudinal beams 6, of flattened form, located at opposite ends of the beams 5, adjacent to opposite sides of the bed of the wagon, and at their central parts these beams 6 are provided with upturned brackets 6"L and adapted to receive the threaded shanks 3 of the intermediate plates 2 secured to the sideboards of the wagon. To the under side of each of the respective beams 6 is secured a bracket-plate 7, the ends of which are bent upwardly and bolted to said beam, so as to form a longitudinal guideway S below the beam G, as clearly indicated in Fig. 1, and in the guideways 8 thus formed at opposite sides of the bed is arranged to slide or roll a transverse tie-bar 9, of circular cross-section, having squared ends 10, Whereon are secured crossheads or elbow-levers 11, each of which is pivotally connected at one end to the rear end of a link 12, the forward end 13 of which is bifurcated and provided with a series of l apertures 14, adapted to receive a pivot-bolt 15 secured to a depending flange 16, formed upon the forward end of the beam 6 at that side of the bed, as clearly indicated in Fig. 1.

The rear end of each of the cross-heads 11 is pivotally connected with the forward end of the connecting-rod 17, the rear end 18 of which is bent upwardly and perforated, as in dicated in dotted lines in Fig. 1, to receive the eye 19 of an eyebolt 20, extending through a perforation formed in one end of the transverse brake-beam 21, said boltbeing provided with a nut 2OfL at its forward end, and having coiled upon it a spring 22 arranged between said nut and the front face of the brake-beam 21. The opposite ends of the brake-beam 21 carry brake-shoes 23 adapted to engage the tire of the wheel 00. (Indicated in dotted lines in the drawings.)

At its central portion the cross-head 11 at one side of the bed is provided with an upwardly-extending arm 24, the upper end of which is provided with one or more perforations 25 adapted to receive the bent end of a link 26, the forward end of which is pivotally connected to the brake-lever 27 pivoted at 2S to the side-board of the wagon-bed and arranged to move in suitable guides 29, as clearly indicated in Fig. l. In operation, when the IOO brake-lever 27 is moved forward, as indicated by the arrow in Fig. l, the cross-head l1 is moved on its pivot-point, the connection of the forward end thereof with the link l2 serving to move the tie-bar 9 rearwardly in guides 8 at opposite sides of the wagon, and this, together with the movement of the rear end of said cross-head, serves to move the connecting-rod 17 rearwardly so as to force the brakeshoes 23 into contact with the wheel-tires under an elastic pressure caused by the interposition of the springs 22.

When the brake-lever 27 has been released the tension of the spring 22 will react on 'the several parts of the mechanism, so as to return the same to their normal positions, as shown in Fig. l,rthereby carrying the brake shoes 23 out of engagement with the wheeltires, without any other action on the part of the driver than that of releasing the brakelever 27 from its guard.

From the above description it will be understood that the brake mechanism, constructed as herein described and shown, is of an ,extrem ely simple and inexpensive nature, is not liable to become deranged or broken, and with the minimum extent of movement of the brakedever imparts a maximum pressure and movement to the brake-shoes when the same are to be pressed in contact with the wheels. The arrangement of the springs 22 between the eyebolts and the brake-beam secures an elastic pressure of the brakeshoes upon the wheels, so that these parts are not liable to become broken, as would be the case were the connection rigid.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a wagon brake, the combination of a pivoted elbow lever, means for rocking the same, a brake beam having a shoe adapted to bear on the Wheel, a connecting` rod coupled at one end to the elbow lever, and an elastic connection between the other end of said connecting rod and the brake beam, substantially as set forth.

2. In a wagon brake the combination of the pivoted elbow lever, means for rocking the same, a brake beam having a shoe arranged to bear on the wheel, a connecting rod coupled at one end to the elbow lever, a bolt coupled to the other end of the connecting rod, and a spring connecting the bolt with the brake beam, substantially as set forth.

3. In a wagon brake, the combination of an elbow lever having its pivot pin mounted to slide on a horizontal plane in a guide on the wagon bed, means for rocking said lever, a link connected at one end to the bed and at the other end to yone arm of the elbow lever. a brake beam having a shoe arranged to bear on the wheel, and a connection between said brake beam and the elbowlever, substantially as set forth.

e. In a wagon brake, the combination of an elbow lever having its pivot pin mounted re slide in guides on the wagon bed, means for rocking said lever, a link connected at one end to the bed and at the other end to one arm of said elbowlever, a brake beam having a shoe arranged to bear on the wheel, andan elastic connection between the brake beam and the elbow lever, substantiallyas set forth.

5. In awagon brake, the combination of an elbow lever having its pivot pin mounted to slide in guides on a frame attached to thc wagon bed, means for rocking said lever, a link connected at one end to the wagon bed and at the other end to one arm of said elbow lever, a brake beam adapted to slide on a horizontal plane on the frame and having a shoe arranged to bear on the wheel, and a connecting rod coupled at one end to the other arm of the elbow lever and at its opposite end having an elastic connection with the said brake beam, substantially as set forth.

G. In awagon brake, the combination of an elbow lever having its pivot pin mounted to slide in guides on the wagon bed, means for rocking said lever, a link connected at one end to the bed and at the other end to one arm of the elbow lever, a brake beam having a shoe arranged to bear on the wheel, a connecting rod coupled at one end to the other arm of said elbow lever, a bolt connected with the opposite end of said connecting rod, and an elastic connection between the bolt and the brake beam, substantially as set forth.

7. The combination, in a wagon brake, of a frame, side bars mounted at opposite sides thereof and having longitudinal guideways aligned with each other, a tie rod arranged to playin said guideways, elbow levers mounted on opposite ends of said tie bar, a brake lever connected with one arm of one of said elbow levers, a link connected at one end t0 the wagon bed and at the other end with one arm of one of said elbow levers, a brake beam movable longitudinally of the frame and provided with shoes arranged to bear on the wheel, and links yieldingly connecting the respective opposite ends of the brake beam with the elbow levers, substantially as set forth.

LAURENS S. VIIEELER.

IVitnesses D. C. JoNEs, R. J. HARDING.

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