Improvements in Trolley Poles and Standards for Electric Traction.
Year: 1898

page_text: Date of Application, 16th Apr., 1898
Complete Specification Left, 10th Jan., 1899-Accepted, 11th Feb., 1899
PROVISIONAL SPECIFICATION.
Improvements in Trolley Poles and Standards for Electric Traction.
We, SIEMENS BROTHERS & Co., LIMITED, of 12, Queen Anne's Gate, West-
minster, S.W., Electrical Engineers, and FRANK AYTON, of 68, Vanbrugh Park,
Blackheath, S.E., Electrical Engineer, do hereby declare the nature of this in-
vention to be as follows:-
This invention relates to the mounting of a trolley pole for electric traction
and the construction and arrangement of the standard, spring, and contact in
such a manner as to give freedom to the pole to swing and revolve, whilst the head
in which the pole is pivotted, the spring, and tube containing it, and the con-
ductor, can be readily removed from the standard or replaced without taking
it apart.
For this purpose the parts are arranged and constructed as follows.
The pole is pivotted at the one side of a hollow head and has an arm which
projects towards the centre of the head and is linked to the upper end of a helical
spring enclosed within a tube attached to the head. This tube has a shoulder
which rests on a ball bearing at the top of the standard column and extends down
the column beyond a bearing situated near the base of the column.
The lower end of the spring is attached to a bolt which extends through a
reduced part of the tube at its lower end and is fitted with a nut and lock nut
accessible through an opening in the roof of the car which, carries the column.
The bolt being prevented from turning relatively to the tube by a pin fitting
in a longitudinal slot in the bolt, the nuts can be turned so as to adjust the strain
of the spring which may be otherwise regulated.
The conductor passes through the pivot of the trolley pole and down through
the helical spring to a ring fixed to but electrically insulated from the lower end
of the tube; a spring contact bearing against the ring is fixed into but electric-
ally insulated from the base of the column.
According to this arrangement, the head carrying the trolley pole, and the
tube with the spring and conductor can turn freely, and the whole can be removed
from the column, the balls at the top of the column being retained by a ring
fixed inside their track.
F
וי
1000
ABEL & IMRAY,
Agents for the Applicants.
Improvements in Trolley Poles and Standards for Electric Traction.
We, SIEMENS BROTHERS & Co., LIMITED, of 12, Queen Anne's Gate, West-
minster, S.W., Electrical Engineers, and FRANK AYTON, of 68, Vanbrugh Park,
[Price 8d.1

page_text: Blackheath, S.E., Electrical Engineer, do hereby declare the nature of this in-
vention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:―
This invention relates to the mounting of a trolley pole for electric traction
and the construction and arrangement of the standard, spring and contact in
such a manner as to give freedom to the pole to swing and revolve, whilst the head
in which the pole is pivotted, the spring and tube containing it, and the con-
ductor can be readily removed from the standard or replaced without taking
the standard apart.
For this purpose the parts are arranged and constructed as shewn in vertical
section in the accompanying drawing.
The pole ais pivotted at the one side of a hollow head band has an arm c which
projects towards the centre of the head and is linked to the upper end of a helical
spring d enclosed within a tube e attached to the head which rests on a ball
bearing at the top of the standard column f. The tube e extends down the
columnf beyond a bearing g situated near the base of the column.
The lower end of the spring is attached to a bolt h which extends through
a boss at the lower end of the tube and is fitted with a nut and lock nut k acces-
sible through an opening in the roof of the car which carries the column, or
through an opening through the base of the column.
The bolt being prevented from turning relatively to the tube by a pin fitting
in a longitudinal slot in the bolt or by a key sliding in a groove, the nuts & can.
be turned so as to adjust the tension of the spring.
The conductor m passes through the hollow end of the trolley pole past its
pivot and down through the helical spring to a ring a fixed to but electrically
insulated from the boss at the lower end of the tube e, and a spring contact p
bearing against the ring n is fixed into but electrically insulated from the base
of the column.
According to this arrangement the head b carrying the trolley pole a and the
tube e with the spring d and conductor m can turn freely, and the whole can be
removed from the column, the balls at the top of the column being retained by
a guard ring r fixed on the inner edge of their track.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, we declare that what we claim
is:-
A trolley pole and standard for electrical traction, constructed and operating
substantially as described with reference to the drawings.
Dated thin 104h
1000
ABEL & IMRAY,
Agents for the Applicants.