Improvements in Electric Railway Trolleys.
Year: 1893

page_text: OT nrst Foreign Application (in
ང་་་ར་པས་
WOY, TOUG
Deing date
United States of America),
Date of Application (in United Kingdom), 15th June, 1893
Complete Specification Left, 15th June, 1893-Accepted, 5th Aug., 1893
COMPLETE SPECIFICATION.
Improvements in Electric Railway Trolleys.
I, EDWARD HENRY ALLEN of Cramer Hill Camden County State of New
Jersey U.S.A. Electriciau do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
The object of my invention is to so construct a trolley and its arm that it will
move freely and at the same time maintain a good contact.
In the accompanying drawings
Figure 1 is a perspective view of my improved trolley for electric railways.
Figure 2 is a sectional view and Figure 3 is a detached perspective view shewing
one of the trolley arms detached.
B is the arm which is secured to the car at one end and carries the trolley A
at the opposite end. Projecting from this arm are two bearing supports B¹.
These bearing supports are mounted in pockets in each side of the upper end of
the arm B and are secured to the arm by a bolt b. In some instances two bolts
may be used in which case the pockets are not necessary.
DD are bearings adapted to pockets in the supports B' and are preferably
made of plumbago or other self lubricating material.
The trolley wheel A is so shaped as to receive the wire or other conductor and
has secured to it a shaft or trunnion a which passes through the wheel and rests in
the two bearings as clearly shewn in Figure 2. In each side of the trolley
wheel A are pockets c in which rest springs C and between these springs and the
face of each bearing D are plates f. These plates and springs insure proper
contact between the trolley wheel and support, and the bearing D being made of
plumbago which is a good conductor of electricity provides a much better contact
than the old arrangement where lubricating oil had to be used.
The device can be readily taken apart for repairs by simply removing one side
of a support as shewn in Figure 3 and it will be understood that the trolley while
shewn as an overhead trolley can be used with the underground system or in
connection with any form of carriage without departing from my invention.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The combination of a trolley wheel spindles thereon, pockets in each side of
said wheel, springs in said pockets, bearings for the said spindles, bearing supports
having pockets adapted to receive the bearings substantially as described.
2. The combination in a trolley of the trolley-wheel spindle secured thereto
bearings for said spindle, supports for the bearings, the lower ends of said supports
being perforated, a supporting arm, pockets therein to receive the lower ends of
said supports with a bolt passing through the perforations in the said supports and
through the arm substantially as described.

page_text: 3. The combination of the trolley-wheel the spindles therefor, an annular recess
in each side of the wheel surrounding the spindles, bearings for the spindles,
supports therefor a spring mounted in each recess in the wheel and plates between
the springs and the bearings substantially as described.
Dated this 13th day of June 1893.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.