US702938A - Trolley for electric railways. - Google Patents

Description

No. 702,938. I Patented lune 24, I902.

r. w. GARRETT.

TBOLLEY FOB ELECTRIC RAILWAYS.

(Application filed Sept. 10, 1901.)

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UNITED STATES PATENT OFFICE.

FRANK NV. GARRETT, OF JOHN STOWN, PENNSYLVANIA, ASSIGN OR TO THE LORAIN STEEL COMPANY, A CORPORATION OF PENNSYLVANIA.

TROLLEY FOR ELECTRIC RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 702,938, dated June 24, 1902.

Application filed September 10, 1901. Serial No. 74,967. (No model.)

To aZZ whom it may concern: pound lubricating-bushing D, composed of Be it known that I, FRANK W. GARRETT, of metal and graphite or similar material. Johnstown, in the county of Cambria and The shaft or spindle B has cut therein (in State of Pennsylvania, have invented a new the preferred form of this invention illus- 55 and useful Improvement in Trolleys for Electrated in Figs. 1, 2, and 3) a deep longituditric Railways, of which the following is a full, nal groove b, and seated in this groove upon clear, and exact description, reference being a spring or springs E is a metallic member had to the accompanying drawings, which F, which is pressed by said springs into enform a part of this specification. gagement with the interior surface of the 60 My invention has relation to overhead trolbushing D. This member F is preferably of leys for electric railways, and is designed to the same length as the bushing, and its sevprovide means for taking up wear between eral edges and corners are rounded to prethe trolley-wheel and its shaft or spindle, vent it from catching and binding inits seat. whereby all looseness and play between the All possibility of its becoming unseated may 65 said parts are obviated and efficient electrical be prevented by shouldering its ends, as incontact is maintained. dicated at f, and driving pins f across the \Vith this object in view the invention 0011- slot 6 above said ends. sists in the combination, with a trolley-wheel, It will be readily seen that notwithstandof a fixed shaft or spindle upon which the ing a considerable amount of wear the spring 70 so wheel is revolubly mounted and a longitudi- E will maintain the engagementof the memnally-extending radially-acting member or her F with the bushing and will thus preseotion seated in a recess or cut-away portion vent play between the parts and the conseof the shaft or spindle and spring-pressed quentarcing. Iamtherefore able to dispense into engagement with the interior surface of with the employment of conducting devices 75 95 the wheel-bushing. The spring or springs connecting the wheel and harp for the purwhich act upon said members or sections are pose of conveying the current to the latter. of sufficient strength to maintain their engage In Fig. 4 I have shown a modification ment with the wheel-bushing, but are not wherein instead of the member F seated in strong enough to unduly increase the friction a longitudinal groove in the shaft or spindle 8c of the parts. a member or section F is seated upon aspring The invention is applicable to trolleys of E in a cut-away portion of the shaft or spinthe existing type by a simple change in the die and secured against displacement by shaft or spindle without change of any kind means of pins 9. in the wheel or harp. While I have shown the springs E and E 85 My invention also consists in the novel conas consisting of superimposed spring-strips, struction and combination 0fparts,all as here- 'it is obvious that other forms of springs may inafter described, and pointed out'in the apbe employed. It is also obvious that the movpended claims, reference being bad to the acable member or section may be constructed companying drawings, in which' and seated in various ways without departo 40 Figure 1 is a vertical section of a trolleying from my invention. Hence I do not wish wheel embodying my invention, the section to be limited to the particular construction being taken longitudinally of the hub. Fig. and arrangement shown.

2 is a section on the line 2 2 of Fig. 1. Fig. Iam aware that heretofore it has been pro- 3 is a detail sectional view, and Fig. 4 is a deposed to provide a trolley-wheel shaft or spin- 9 5 tail view illustrating a modification. dle with a number of plugs of lubricating In the figures the letter A designates the material held by springs in contact with the trolleyframe or harp, B the fixed shaft or spininner surface of the wheel-hub for the purdle, andOthegroovedtrolley-wheelrevolubly pose of lubrication. This, however, is not mounted on said shaft or spindle. The harp the purpose of my invention, as will be apso and wheel are of the usual type of construcparent from the foregoing specification.

tion, the latter being provided with a com- Having thus described my invention, what 1. The combination with a trolley-wheel,'

of a fixed shaft or spindle on which the wheel is revolubly mounted, and a longitudinallyextending metallic member seated in said shaft or spindle and spring-pressed into engagement with the inner bearing-surface of the wheel.

2. The combination with a trolley-wheel, and a fixed shaft or spindle upon which the wheel is revolubly mounted, of means for preventing looseness and play between the wheel and the shaft or spindle, consisting of a longitudinally-extending piece seated in a recess of the shaft or spindle and springpressed into engagement with the inner bearing-snrface of the wheel, and pins or the like engaging said piece to prevent displacement FRANK \V. GARRETT.

WVitnesses:

CORA G. 00X, H. W. SMITH.

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