Untitled record

Application filed August 20,1892. Serial.No. 443,591. (No model.)

To all whom it may concern:

Be it known that I, Harry H. Kelley, of Willoughby, in the county of Lake and State of Ohio, have invented certain new and use5 ful Improvements in Car-Brakes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

to My invention relates to improvements in car-brakes, and more especiallj⁷ to the mechanism for applying or setting the brakes of street-ears, the object being to provide simple and comparatively-inexpensive mechanism, 35 whereby the brakes are more easily and quickly applied without jarring or tearing of the parts, and whereby the purchase is increased in the application of the brakes.

With this object in view and with a view of 20 realizing certain other advantages hereinafter indicated my invention consists in certain features of construction and in combination of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of the machine in complete position attached to the platform of a street-car that is shown in dotted lines. Fig. 2 is a top plan of casing C. Fig. 3 is a side elevation, partly in section, of said casing and internal mechanism, the section being taken on a line centrally through the brake-chain spool. Fig. 4 is a top plan of the internal gear integral with the brake-chain spool and the working pinion, the brake-shaft upon which said pinion is mounted being shown in section. Fig. 5 is a bottom plan in horizontal section of the brakechain spool, showing the eccentricity of the spool with the axis of the internal gear and showing the attachment of the brake-chain to the larger side or belly of the eccentric spool. Figs. 6, 7, 8, and 9 are diagrammatic views illustrating the operation of the brake-chain spool and the manner in which the slack of the brake-chain is taken up and the manner in which the purchase of the machine is increased in the application of the brakes.

Referring to the drawings, A represents the platform of a street-car; B, the brake-shaft;

B', the brake-wheel mounted on the brakeshaft, and b' the brake-wheel handle. Shaft B has mounted thereon the usual brake ratchet wheel b, that is adapted to engage ratchetpawl &²on the end timber of the car-platform, as heretofore.

The brake-shaft has bearing in upwardlyprojecting stud C² of cap C' of a casing C, secured to the cap by means of screws or bolts C³, said casing with its cap being preferably of cast iron and being rigidly secured to the 60 end timber of the platform of the car, cap C' having lateral flanges C⁴ perforated for the passage of the securing-bolts.

On the brake-shaft within casing C is operatively mounted a pinion D, that meshes 65 with an internal gear E integral with brakechain spool e, that is somewhateccentrie with gear E, as shown in Fig. 5, and is loosely mounted on a center-pin e',that is rigidly secured to the bottom of casing C. Spool eand 70 internal gear E are inclosed within said casing. It will be observed that the brake-shaft, pinion, internal gear, and brake-chain spool all move in the same direction.

The brake-chain G is attached, as at g, (see 75 Fig. 5,) to the central portion of the larger side or belly of the brake-chain spool, and the arrangement of parts is such that when the brake-chain has its full slack brake-chain spool e is in the position shown in diagram 80 Fig. 6, wherein the greatest radius of thespool is at the point of attachment of the brakechain. _f A half-revolution of thespool brings the same to the position shown in diagram Fig. 7, wherein the greatest radius is again 85 at the point of attachment of the brake-chain and in which position of the spool the slack of the brake-chain is removed or taken up. The chain has not yet been but is ready to be wound upon the spool. It will readily be 90 observed that a still further revolution or turning of the spool (of course in the same direction) to apply the brakes will gradually decrease the radius of the spool at the point at which the brake-chain winds upon thespool, 95 (see Figs. 8 and 9,) the result being an increase in the purchase corresponding to the decrease of the said radius. Casing C of course has a lateral opening C⁵ for accommodating the location and operation of the brake-chain. ioo

The advantages of my improved brake mechanism alluded to in the preamble of this specification, it is believed, are quite apparent.

Furthermore, the mechanism occupies but

486,718 little room, and the brake-chain spool and the gear and pinion that operatively connect said spool with the brake-shaft being inclosed, as shown and described, said operating parts are 5 sufficiently protected against dust and dirt.