BRAKE APPARATUS FOR RAILWAY AND TRAMWAY VEHICLES
Year: 1884

page_text: I, JOHN PETER DAVIES of Coal Exchange in the City and County of Chester,
Estate Agent &o, do hereby declare the nature of my invention for "BRAKE
APPARATUS FOR RAILWAY AND TRAMWAY VEHICLES," to be as follows
My invention relates to a construction and arrangement of brake apparatus for
vehicles applicable either to single cars such as those employed on tramways or to
coupled cars such as those constituting a railway train. For a single car the.
apparatus is arranged as follows. Along the middle of the car below the under-
frame is mounted in bearings a longitudinal spindle which can be made to revolve
by means of suitable gearing at either end of the car.
On this spindle about the middle of its length are fixed pullies or chain wheels
which by means of bands or chains drive two parallel spindles one on each side
bying between and in line with the two wheels. These spindles have on them right
and left screw threads working in nuts in the near brake blocks or in yokes
connected by tie bars to the far brake blocks. On turning the central spindle in
the one direction and thereby causing the side spindles to revolve the brake blocks
are caused by the action of the screw threads to press simultaneously and equally
against the wheels on both sides thereof; and on turning the central spindle in the
opposite direction the brakes are taken off. When a number of vehicles are
coupled up to form a train, the central spindles, instead of being separately worked
are coupled together end to end so that the rotary movement is communicated
throughout the train.
Instead of employing separate screw spindles one at each side of the carriage as
above described, the screw threads may be on the central spindle working in nuta
in cross bars connecting each pair of brake blocks.
Dated this 4th day of July 1884.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.

page_text: I, JOHN PETER DAVIES of Coal Exchange in the City and County of Chester,
Estate Agent & do hereby declare the nature of my invention for "BRAKE
APPARATUS FOR RAILWAY AND TRAMWAY VEHICLES” and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement :-
My invention relates to a construction and arrangement of brake apparatus for
vehicles, applicable either to single cars, such as those employed on tramways, or
to coupled cars such as those constituting a railway train. For a single car, the
apparatus is arranged as follows:-
Along the middle of the car, below the underframe, is mounted in bearings a
longitudinal spindle which can be made to revolve by means of suitable gearing at
either end of the car. On this spindle about the middle of its length are fixed
pullies or chain wheels which by means of bands or chains drive two parallel
spindles one on each side lying between and in line with the two wheels. These
spindles have on them right and left screw threads working in nuts in the near
brake blocks or in yokes connected by tie bars to the far brake blocks. On turning
the central spindle in the one direction and thereby causing the side spindles to
revolve, the brake blocks are caused by the action of the screw threads to press
simultaneously and equally against the wheels on both sides thereof; and on turning
the central spindle in the opposite direction the brakes are taken off. When a
number of vehicles are coupled up to form a train, the central spindles, instead of
being separately worked, are coupled together end to end so that the rotary
movement is communicated throughout the train.
Instead of employing separate screw spindles one at each side of the carriage as
above described, the screw threads may be on the central spindle working in nuts
in cross bars connecting each pair of brake blocks.
Fig. 1 of the accompanying drawings is a side view and Fig 2 a plan shewing
the brakes on one side of a carriage or truck arranged to be worked by apparatus
according to my invention. Under the carriage frame is mounted the spindle A
which may be caused to revolve by bevil gear as shewn at B, or by chain gear as
shewn at C, or it may be worked from the corresponding spindles of other carriages
coupled to it by joints as shewn at D. From the spindle A is worked by chain E,
on each side of the vehicle, a spindle F which has at its ends right and left screw
threads working in yokes G connected to the farther brake blocks H, the ends of
the spindle F bearing against the nearer brake blocks H'. When the spindle A is
turned causing the spindles F to revolve in the one direction, the blocks H are
drawn and the blocks H¹ are pressed against their respective wheels. When the
movement is reversed, the brakes are released.

page_text: 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 construction and arrangement of brake apparatus for vehicles, substantially
as herein described and illustrated by the drawings.