US769349A - Vehicle-brake. - Google Patents

Description

No. 769,349. v PATENTED SEPT. 6, 1904, W. W. S. KIME. VEHICLE BRAKE.

APPLICATION FILED 1350.14, 1903. N0 MODEL. I

/ f A a Patented September 6, 1904.

UNITED STATES PATENT OFFICE.

WARREN WINFIELD SCOTT KIME, OF NORTH ENGLISH, IOWA, ASSIGNOR OF FIFTY-FIVE ONE-HUNDREDTHS TO WILLIAM K. RANKIN, OF CEDAR RAPIDS, AND ROBERT F. ERWIN, OF NORTH ENGLISH, IOWA.

VEHICLE-BRAKE.

. .SPECIFICATION forming partof Letters Patent No. 769,349, dated September 6, y1904.

i `Application led December 14, 1903. Serial No. 185,156. (No model.)

varying the relation of the brake-shoes to the wheel.

With these and other objects in view the invention comprises the novel features of construction and combination of parts more fully hereinafter described.

In the accompanying drawings, Figure lis a bottom plan view of a vehicle having my improved brake applied thereto. Fig. 2 is a vertical longitudinal sectional elevation of the same. Figs. 3, 4, 5, and 6 are detailed views.

Referring to the drawings, 1 designates the rear axle, having wheels'2 mounted thereon,

3 the reach, and 4 the vehicle-body, these parts all being of any suitable material and of the usual or any preferred construction, except that the vehicle-body is provided through its bottom with a longitudinally-disposed slot 5, having along one edge a plate 6, the longitudinal edge of which adjacent to the opening is slightly downturned for the purpose which will hereinafter appear. A Bolted or otherwise secured beneath the vehicle-body adjacent to its longitudinal edges are a pair of oppositely-disposed straps 7, bent to form longitudinal guide openings or ways 40 8, in which is mounted a brake rod or beam l 9, having its ends bent to form or otherwise provided with right angularly depending crank-arms 10, carrying brake-shoes 11, dis

, posed in advance of and adapted to be moved 45 into and out of engagement with the treads of the wheels 2 when the brake-rod is rocked or rotated, there being detachably secured to the active faces of the shoes wearing blocks or members 12, designed to'be renewed from time to time as circumstances require.

Fixed to the brake-rod is an operating-lever 13, lying beneath and normally parallel with the bottom of the vehicle-body, to which latter `is secured a spring 14, designed to act upon the lever for normally maintaining the parts in non-braking position. The brake-lever is provided at its outer end with an extension or standard 15, which normally rises vertically through the opening 5 and carries atits upper end a foot-piece 16, adapted for engagement in depressing the outer end of the lever to rock the brake-.beam and apply the brake, the standard being provided upon one side with a vertical series of laterally-projecting teeth 17, adapted for engagement with the plate 6 to maintain the lever in depressed or braking position.

The brake-beam is connected with the axle 1 by means of a pair of connecting-rods or analogous elements 18, each provided between its ends with a fixed polygonal nut 19 and having its opposite ends reversely threaded for engagement with similarly-threaded members I 2O 21, secured, respectively, and in any suit-l able manner to the axle and brake-beam. I preferably secure the members 20 to the axle by couplings 22, having each a pair of spaced ears, between which one of the members is pivoted, and the members 21 to the brakebeam by meansof straps or-collars 24, folded around the beam and constituting journals or bearings in which the latter rotates, said collars having the respective memberspivoted between their ends. Itis apparent that by engaging the fixed nuts 19 and rotating the rods 18 the brake-beam will be moved back or forth in the ways 8, according to the direction of rotation of the rods, thus obtaining an initialV adjustment of the slices relative to the wheel-tread, thereby compensating for wear of the'parts and varying the pressure requisite for applying the brakes.- The brake-beam is provided with projecting lugs or stops 25, disposed on the .inner sides of the collars 24,

whereby relative movement of the parts in a direction longitudinally of the beam is obviated.

From the foregoing it will be seen that I produce a simple inexpensive device which is admirably adapted for the attainment of the ends in view. It is, however, to be understood that I do not limit myself to the precise details herein set forth, as minor changes may be made without departing from the spirit of the invention.

Having thus described my invention, what I claim is- In a vehicle-brake, the combination with the axle-wheels and body, of longitudinal guides provided beneath the latter, a brakebeam movable longitudinally of the guides and having crank-arms, brake-shoes carried by the crank-arms, attaching members secured to the axle, collars embracing the beam and constituting journals for the latter, attaching members connected with the collars, rigid connecting elements in reverse threaded engagement with the attaching members and operable for obtaining an initial adjustment of the shoes relative to the wheels, and means for rotating the beam to move the shoes to and from engaging position.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

WARREN WINIIELI) SCOTT KlllIE.

Witnesses:

J. D. BUTLER, J r., T. M. FOSTER.

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