Improvements in Electric Tramcars with Overhead Collectors.
Year: 1899

page_text: Date of Application, 5th Oct., 1899
Complete Specification Left, 5th July, 1900-Accepted, 11th Aug., 1900
PROVISIONAL SPECIFICATION.
Improvements in Electric Tramcars with Overhead Collectors.
I, WILLIAM HENRY PICK, of 19, Ernest Street, Wakefield Road, in the City
of Bradford, Joiner and Builder, do hereby declare the nature of this invention
to be as follows:-
-
This invention relates to improvements in that class of electrically driven
cars in which the electricity is supplied on the over-head trolley system and in
which a temporary or permanent cover or roof is provided on the top so as to form
an upper compartment. The object of the invention is to make a weather-tight
joint for the trolley arm at the same time provide free play for it in action as
well as permit it to be turned in the ordinary way without incommoding the
passengers.
the dome 01'
may
cap
For this purpose I pass the trolley arm through a rotatable dome or cap
mounted concentrically over the trolley arm pillar upon or around an upwardly
projecting rim or flange round a circular opening in the roof of the upper
compartment. The trolley arm passes through a hole in the dome or cap and
be divided diametrically or approximately
diametrically through this hole to facilitate inserting the trolley arm.
The parts of the dome or
are
thus divided
connected together
cap
by
suitable weather tight joint. An india aubber washer
may be introduced between a flange round the hole in the dome and the trolley
arm to make a water-tight joint. In case the trolley arm requires to have
vertical play in the hole said hole may be in the form of a slot and the joint
may be a loose india-rubber or other flexible water-tight sleeve one end of which
may be secured round a flange or rim round the said slot and the other end
secured round the trolley arm a suitable distance up the arm.
any
Anti-friction rollers may be provided between the dome and the dome seat to
permit it to turn freely.
Dated this 4th day of October 1899.
DRACUP & HOWELL,
Patent Agents, Bradford.
Improvements in Electric Tramcars with Overhead Collectors.
I, WILLIAM HENRY PICK, of 19, Lower Ernest Street, Wakefield Road, in
the City of Bradford, Joiner and Builder, 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:-
This invention relates to improvements in that class of electrically driven

page_text: cars in which the electricity is supplied on the overhead trolley system and in
which a temporary or permanent cover or roof is provided on the top so as to form
an upper compartment. The object of the invention is to make a weather-tight
joint for the trolley arm at the same time provide easy play for it in action as
well as permit it to be turned in the ordinary way without incommoding the
passengers.
For this purpose I pass the trolley arm through a rotatable dome or cap
mounted concentrically over the trolley arm pillar upon or around an upwardly
projecting rim or flange round a circular opening in the roof of the upper
compartment. The trolley arm passes through a hole in the dome or cap and
the dome or cap may be divided diametrically or approximately diametrically
through this hole to facilitate inserting the trolley arni. The parts of the dome
or cap thus divided are connected together by any suitable weather tight joint.
In case the trolley arm requires to have vertical play in the hole the said hole
may be in the form of a slot and the joint may be a loose india-rubber or other
flexible water-tight sleeve one end of which may be secured round a flange
or rim round the said slot and the other end secured round the trolley arm a
suitable distance up the arm.
.
To fully describe my invention reference is made to the accompanying sheet
of drawings, forming a part of this specification, in which similar figures of
reference indicate corresponding parts in each of the views.
Figure 1. represents an end view of my improvements applied to a tram-car.
Figure 2, is a plan view of the same.
Figure 3, is a diametrical section of the dome on a larger scale showing the
upper part of the trolley pillar and a portion of the trolley arm.
A frame or side pieces 2 are fixed to each side of the top 3 of the tramcar to
carry the cross. piece 4 forming a support for the rim 5. The cross and side
pieces may be fixtures or may be made removable with the remainder of the
top and sides of the upper compartment. The rim 5 is made of the section shown
in Figure 3 and has a ball race 6 formed round it filled with balls 7 upon which
the flange 8 of the dome 9 rests and turns. The dome 9 is made in halves con-
nected together by the flanges 10. The dome 9 and rim 5 are mounted concentric
with the trolley pillar 12 and a slot 13 is made through the dome for the trolley
arm 14 to pass through. The slot 13 is made sufficiently long to allow the trolley
arm plenty of vertical play and the slot is made water-tight by the india-rubber
sleeve 16 one end of which is secured round the flange 17 surrounding the slot 13
and the other end is secured tightly round the trolley arm 14. The ends of the
sleeve may be secured in position by the wire 20 wrapped tightly round them.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
-
The combination with the rotatable dome 9 mounted concentric with the
trolley pillar and having a slot for the trolley arm, of the flexible sleeve or its
equivalent 16 forming a water-tight cover for the said slot, substantially as
herein shown and described.
Dated this 3rd day of July 1900
DRACUP & HOWELL,
Patent Agents, Bradford.