Improvements in Apparatus for Raising or Lowering Railway- carriage Windows.
Year: 1889

page_text: Date of Application, 10th Dec., 1889
Complete Specification Left, 1st Aug., 1890-Accepted, 6th Sept., 1890
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Raising or Lowering Railway-
carriage Windows.
I, THOMAS HENRY WRIGHT, of 1 White Rock Place, Tunbridge Road, Maidstone,
in the County of Kent, Builder, do hereby declare the nature of this invention to.be
as follows:-
My invention relates to improvements in apparatus for raising or lowering the
windows in railway carriage doors, and consists of one or more piston rods fixed to
the sash of the window, which work in cylinders placed inside the lower portion of
the door. The cylinders are supplied with atmospheric air from the exhaust from the
brake apparatus, and stored in separate tanks, and by a passenger opening a valve
the window rises, or he opens another valve to let the air out when down falls the
window.
'
This invention is constructed with a tank to each carriage to store the exhaust air
from any atmospheric air brake, to this said tank I connect the various branches to
the cylinders in the doors, the branches being supplied with valves, levers, cocks, and
universal or other joints for the proper working of the apparatus.
The universal or swinging joint is placed near the bottom hinge of the door, and is
termed the supply to the door for the purpose herein described.
Dated this 10th day of December 1889.
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Raising or Lowering Railway-
carriage Windows..
I, THOMAS HENRY WRIGHT, Contractor, of 44 London Road, late of 1 White Rock
Place, Tunbridge Road, both in Maidstone, in the County of Kent, 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 :-
My invention relates to improvements in apparatus for raising or lowering windows
in railway carriage doors, and consists of one or more piston rods fixed to the sash of
the window, which work in cylinders placed inside the lower portion of the door.
The cylinders are supplied with atmospheric air by the exhaust from the brake (or
from any other source), and stored in separate tanks, and on a passenger opening a
valve the window rises, or he opens another valve to let the air out when down falls
the window.
This invention is constructed with a tank to each carriage to store the exhaust air
from any atmospheric air brake, and to this said tank I connect various branches to
the cylinders in the doors, the branches being supplied with valves, levers, cocks, and
universal or other joints, for the proper working of the apparatus.
The universal or swinging joint is placed near the bottom hinge of the door and is
termed the supply to the door for the purpose herein described.
The object of this invention is that by pulling or turning a handle or knob on the
inside or outside of the door, the window will rise or fall, or the window may be
placed in any desired position, and to obviate the necessity of pulling up or lowering
by the ordinary leather strap now in common use.
And in order that my invention may be thoroughly understood, I now proceed to

page_text: describe the accompanying drawings thereof reference being had to letters and figures
marked thereon.
Figure 1. represents the inside elevation of the door with the bottom panel
removed.
Figure 2 denotes the elevation of the outside of the door.
Figure 3 is an elevation of the rebate of the door frame d with the button head j of
the stop. This figure is broken off top and bottom.
Figure 4 is an enlarged view of the mechanism which operates' the block k on the
ratchet f, and is placed in a sunk recess in the door frame. The block falls into the
ratchet by the power of the spring and may be thrown out of gear by the operator
working the handle i on the dial plate h; the handle being attached to a spindle w
with a pulley over which a chain passes to open either the supply or exhaust valves
below. The plate y will throw the block out of gear when the largest diameter meets
the button head j. The spindle passes direct through and has a handle g on the
outside.
My invention is constructed with two cylinders m, m, connected together at the
base n, at the bottom part o of door d, and in the said cylinders I place the piston
rods e, e, the top of these said piston rods are fixed to the top of the window frame a,
with glass c.
At or beneath the floor of the carriage I fix the tank u connected
to the main from the exhaust of the brake for the purpose of storing the air in
the said tank. To the tank 1 run a connection by pipes S to the cylinders, with a
supply valve, and a safety valve t; this said supply of air runs up the connection
in the door jamb 6 through the universal joint Z and direct into the cylinders
directly the valve is opened. Over the pulley & I pass a chain p the ends of
this said chain being attached to the lever arm on the supply valve r¹ and the
lever arm of the exhaust valve with springs q, q, to hold the levers in their
normal position. When the supply valve is opened the block k is released from
ratchet by action of the plate y; the chain to supply valve is pulled and opens
the said valve, while the other chain to exhaust hangs loose and its lever is held
down (valve shut), by its spring. Directly the passenger releases the handle i it
returns to the upright position as in figure 1 by the action of the spring on
lever r¹.
To operate with this invention in order to raise the window I pass the handle i to
the left in the direction of the arrow in figure 4, when the block k is released from
the ratchet fas indicated by dotted lines in figure 4, carrying at the same time the
chain P. over the pulley x which opens the supply valve, when the air rushes into
the cylinders and raises the window, and by turning the handle to the right the
button falls into the recess in the wheel y to permit the block k to grip the ratchet,
and at the same time the exhaust valve r is opened and the supply valve closed by
the revolution of the chain and the action of the springs, to allow the air to escape
from the cylinders.
It will be understood that I do not limit myself to any particular sizes or shapes, or
the exact materials, or to any details herein described, as the various parts may be
varied in many ways within the scope of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is :-
1. The combination of the apparatus for raising or lowering windows in railway
carriage doors by means of the exhaust atmospheric air from the brake, or from any
other source, substantially as herein described and according to the accompanying
drawings.
2. The combination of the ratchet f and the fall block k, and the push j, with the
plate y, on the spindle w, and the handles g, and i, to fix the window to any desired
height, or to release the same, substantially as herein described and according to the
accompanying drawings.

page_text: 3. The combination of the chain and springs, to open or close the valves, either to
supply or exhaust, substantially as herein described and according to the accompanying
drawings.
4. To construct my invention of any material, size, shape, or with any modification
5 of the various parts, for the purpose herein set forth.
Dated this 1st day of August 1890.
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.