US868719A

US868719A - Wagon-brake.

Info

Publication number: US868719A
Application number: US33633006A
Authority: US
Inventors: Thomas J Stephens
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-09-26
Filing date: 1906-09-26
Publication date: 1907-10-22
Anticipated expiration: 1924-10-22

Description

.No. 868,719. PATENTED OCT. 22. 1907.

T. J. STEPHENS.

. v 7L1. Staph/2s,

@Wihwauo '35 a Q r WW 0 o I THOMAS J. STEPHENS, OF JULIAETTA, IDAHO.

WAGON-BRAKE Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed September 26, 1906. $e a N 1 836,330.

To all whom it may concern:

Be it known that I, THOMAS J. STEPi-rENs, a citizen of the United States, residing at Juliaetta, in the county of Latah and State of Idaho, have invented certain new and useful Improvements in Wagon- Brakes, of which the following is a specification.

signed chiefly for different makes of wagon racks such as are used for hauling wood, grain, ore and the like, the mechanism being of such construction as also to be readily attached to any farm wagon.

The invention has relation more particularly to the means whereby power is applied for setting the brakes, the construction being such as to enable the driver to have both hands free, the brake being manipulated solely by means of the foot and adapted to be locked when set and to be automatically released when it is required to relieve the vehicle of the influence of the brake mechanism.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result, reference is to be had to the following description and accompanying drawings.

While the invention may be adapted to different forms and conditions by changes in the structure and minor details without departing from the spirit or es sential features thereof, still the preferred embodiment is shown in the accompanying drawings, in which:

Figure 1 is a view in elevation of a part of a wagon body or rack provided with brake setting mechanism embodying the invention. Fig. 2 is a detail view of the slide on a larger scale. Fig. 3 is a detail view of a portion of the rack bar, the slide and adjunctive parts, the same being illustrated on a larger scale. Fig. 4 is a detail view showing a modified form of dog which is spring actuated and automatically engages with the teeth of the bar.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The numeral 1 indicates the vehicle body or rack to which the operating parts embodying the invention are attached and which body or rack may be of any design or make according to the special purpose for which designed. Uprights 2 are secured to opposite sides of the vehicle body or rack and support the said springs 3 and irons 4-, the latter having opposite end portions projected beyond the vertical edges of the uprights and upwardly deflected to receive the bolster or lower element of the s at springs. A foot rest 5 is located forward of the uprights and the seat 6. A rack bar 7 is arranged in advance of the seat and projects over the foot rest and is attached at one end to the latter by connection at its rear end with the uprights 2. The rack bar is sufficiently stout and rigid to resist the strain to which it is subjected when the brake is set and locked thereto.

A lever 8 is pivoted at its lower end at 9 to a strap iron 10, bolted or otherwise fastened to a side of the vehicle body or rack. The lever 8 extends in an up- 1 Ward direction and is formed with an off-set interme- This invention appertains to brake mechanism dediate of its ends to throw the upper portion inward so that the operating rod or bar 11 may come between the seat springs and beneath the seat. The brake setting rod or bar 12 has pivotal connection with the lever 8 and is connected in the usual manner with the brake beam or'like part of the brake mechanism. A spring 13 is interposed between the lever 8 and the terminal upright 2 and normally exerts a rearward pressure upon said lever so as to force the brake shoes away from the wheels when the brake is not applied. The spring 13 may be secured to either the lever or the upright, as found most advantageous.

A slide 14 is mounted upon the rack bar 7 and 001m prises similar side pieces which are spaced apart and bolted or otherwise connected so as to form a space for reception of the rack bar without producing any binding thereof. The side pieces, comprising the slide 14, consist of plates, the one having a front extension 15 and the other a similar rear extension 15, said extensions 15 having their lower edge portions inwardly bent to provide lips 16 which underlap the lower edge of the rack bar 7 and prevent vertical displacement of the slide. A filling piece 17 is interposed between the upper edge portions of the side pieces and serves to properly space the same. A dog 18 is interposed between the lower edge portions of the side pieces below the lips 16 and serves in conjunction with the filling piece 17 to maintain the side pieces or plates of the slide 14 a proper distance apart to prevent their binding upon the sides of the rack bar 7. The dog 18 is provided with an extension 19 adapted to be engaged by the foot so as to throw the dog into engagement with a tooth of the rack bar so as to hold the brake when set. The dog 18 is so pivoted as to normally cause its engaging end to fall away from the toothed edge of the rack bar. When the brake is set a pressure upon the extension 19 throws the dog 18 into engagement with a tooth of the rack bar and thereby locks the brake without requiring especial care on the part of the driver to hold the brake in active operation.

The operating rod or bar 11 has adjustable connection at its rear end with the lever 8 and is preferably bifurcated or forked so as to embrace opposite sides of the lever and thereby equalize the pressure upon said lever and the rod or bar 11. The forward end of the rod 11 is pivotally connected with the slide 14 and an extension 20 projects laterally from the front portion of said rod 11 to provide a rest for the foot of the driver so that pressure may be applied for either setting or releasing the brake, as may be required. Upon pushing the slide forward by application of force to the lateral extension or foot rest 20, a pulling force is applied to the brake setting rod or bar 12, with the result that the brake is set, and upon applying pressure to the extension 19 of the dog 18, the latter is caused to engage with a tooth of the rack bar and hold the brake in locked position. When it is required to release the brake, the slide is moved forward a slight distance to permit automatic disengagement of the dog 18 from the rack bar, and upon gradual withdrawal of the pressure from the foot rest 20, the brake is permitted to correspondingly release its retarding action upon the vehicle wheels, as will be readily understood.

In the construction shown in Fig. 4, the dog 21 is differently arranged and is acted upon by means of a spring 22, so as to automatically engage with the teeth of the rack bar. When it is required to release the brake, it is necessary to press upon the extension of the dog 21 so as to repress the spring 22 and thereby permit the slide 14 to move rearward and the brake shoes to fall away from the vehicle wheels in the manner well understood.

Having thus described the invention, what is claimed as new is:

1. In brake mechanism, the combination of a fixed rack bar, a slide mounted thereon and comprising similar side I pieces each having an end portion bent inward to engage with an edge of the rack bar, a filling piece interposed between said plates to engage with the opposite edge of the rack bar, a dog fitted to the said slide to engage with the teeth of the rack bar and hold the slide in an adjusted position, and connecting means between said slide and a brake element.

2. 1n brake mechanism, the combination of a fixed rack bar, a slide movable upon the rack bar and comprising similar side pieces having opposite end extensions inwardly projected to engage an edge portion of the rack bar, a filling piece interposed between the said side pieces to engage with the opposite edge of the rack bar, a dog pivoted to the slide and arranged between the aforesaid opposite inwardly projected extensions thereof, and connecting means between the slide and a brake element.

3. In brake mechanism, the combination of a fixed rack bar, a slide mounted thereon and comprising similar side pieces, each having an extension, the extension of one side piece being at the front and the other at the rear and said extensions having portions extended inward to engage with the rack bar and limit movement of the slide in one direction, means applied to the slide to make positive engagement with the rack bar and hold the slide in an adjusted.position, and connecting means between the slide and brake member.

In testimony whereof I affix my signature in presence of two witnesses THOMAS J. STEPHENS. [L. 5.]

Witnesses Josnrrr .l. NIcrroLs, FRANK W. BOGARTII.