US761574A

US761574A - Trolley-protector.

Info

Publication number: US761574A
Application number: US18816304A
Authority: US
Inventors: John H Best Jr
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-01-08
Filing date: 1904-01-08
Publication date: 1904-05-31
Anticipated expiration: 1921-05-31

Description

PATENTED MAYsl, 1904.

J'. H. BEST, JR. TROLLEY PROTECTOR.

APPLICATION FILED JAN. 8, T904.

A TTOHNE YS In wm N0 MODEL I' w/TA/Essfs,l

Patented may 31, 1904.

l y UNITED STATESV PATENT OFFICE.

JOHN H. BEST, JR., 4OF SANDUSKY, OHIO.

TROLLEY-PROTECTOR.

SPECIFICATION forming part of Iietters Patent 1`\To. 761,574, dated May 31, 1904. Application filed January 8,1904. Serial 110.188,163. (No model.)

To all whom it may concern:

'Be it known that I, J oHN H. BEST, Jr., residing in Sandusky, in the county of Erie and State of Ohio, have invented a new and Improved Trolley-Protector, of which the followhangers, and other` devices-likely to engage with trolleyprotectors as they have been heretofore constructed, all as will hereinafter be fully described, and the novel featuresl pointed out in the claims. Reference is had lto the accompanying drawings, in which* Figure 1 is a side elevation illustrating my invention in use. Fig. 2 is an elevated rear view; Fig. 3, a detail broken-away sectional view taken on line 3 3 of Fig. 1, and-Fig. 4 s a detail sectional viewl taken on line 4 4 of ig. l. Y

In carrying out my invention I employ anyv suitable form of trolley-head A, having forks B, providing support for the usual sheave C on an axle, which may be in the nature of `a simple bolt D, having support at the upper end of the forks, as best shown in Fig. 3.

At opposite sides of the sheave O, I lixedly arrange plates E, having support on the axle D by approved means, serving to prevent rotation, and washers F, arranged between the plates E and the sheave O, may also be used. At the upper end or top edge of the plates E, I provide yielding and abutting dogs G,hav

ing stemsV H, made projecting, adapted for connection to the'upper ends of levers I, having fulcrums at J on the plates E and secured by suitable headed pins K. (See Fig. 4.) It

will be noticed that the abutting ends of the ldogs G are enlarged and made rounding or curved, whereby upon contact with a fixed object on the conductor-wire they will be separated against tension of the springs L on the dog-stems H. The springs are arranged in suitable recesses L in the linner sides of the plates E, with their ends confined between the enlarged head on the dogs and the bottom or inner wall of the recesses.

The lower ends of the levers I are connected by two ends M of a rope N, which latter extends down through an eye O.

My invention will be understood from the above description. The rope N is the common means employed for pulling down the trolley-pole. Now obviously when the rope N is pulled, as stated, the lower ends of the levers I will be drawn together through connection of the two ropes M, and therebyeffect suliicient separation of the dogs G against tension of the springs L to permit passage between them of the conductor-wire. The main object of the dogs G is to prevent jumping of the trolley from the conductor-wire. Through their construction, however, they have addi-A tional advantage in being made yieldingly endwise separable to permit free passage over obstructions on the conductor-wire.

Having thus described my invention, wha I claim as new, and desire to secure by Letters Patent, is-

1; The combination in a trolley-protector, of rigid plates at opposite sides of the trolleysheave, leversl fulcrumed on the said plates, operating-ropes extending from the lower ends of the said levers, and yielding abutting dogs at the upper ends of the levers, the contacting faces ofthe dogs being adapted to be laterally separated upon contact with a p ro- V jection on the conductor-wire.