Improvements in Apparatus for Retaining Railway Carriage or other Window Sashes at Any Desired Height.
Year: 1889

page_text: Date of Application, 17th May, 1889
Complete Specification Left, 31st Jan., 1890-Accepted, 1st Mar., 1890
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Retaining Railway Carriage or
other Window Sashes at Any Desired Height.
I, WALDEGRAVE ALLENBY of 6A Tower Chambers, Tower Gardens, Liverpool, in the
County of Lancaster, Colliery Agent do hereby declare the nature of this invention
to be as follows:-
The invention has for its object an apparatus for retaining window sashes of railway
carriages, tramway cars, omnibuses, ships' cabins, and drop windows generally, at any
desired height.
I propose to provide a cylindrical roller, or block, capable of rotation on a spindle
or axis, and mounted at each end in arms or cranks. The said cranks are pivoted
(at the opposite end to that where the roller is mounted) to the window or door
frame or to brackets, and the roller is weighted or is under the control of a spring,
so that it is held with suitablo force against the glass of the window sash or the sash
itself, but can be drawn away clear of the glass when desired. The roller is
preferably made capable of-adjustment in the said brackets. It may be constructed
of metal covered with india-rubber or other suitable material, and may or may not be
adapted to have the usual sash lifting strap or band passed over it.
The mode of action is as follows:-
The roller is normally held with suitable force against the window sash by the
spring or weight aforesaid, and forms an elastic cushion which holds the sash up in
the desired position and will, prevent rattling or vibration. The lifting strap may be
passed over said roller between it and the glass with great advantage to the grip or
hold. To open the window the sash is forcibly pushed down by the hand, or the
roller is pulled back by the strap or otherwise, thereby removing the grip or hold,
and permitting the sash to drop down. The apparatus presents no obstacle to the
window sash being drawn up.
Dated this 16th dov of Nov 1889
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Retaining Railway Carriage or
other Window Sashes at Any Desired Height.
I, WALDEGRAVE ALLENBY of 6A Tower Chambers, Tower Gardens, Liverpool, in
the County of Lancaster, Colliery Agent, 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 invention has for its object an apparatus for retaining window sashes of rail-
way carriages, tramway cars, omnibuses, ships' cabins, and drop windows generally,
at any desired height.
In the drawings,
Figure 1 is a section as on the line y y, Figure 2, through part of a railway
carriage door and window having my device attached thereto.
Figure 2 is an elevation of the same showing the inner surface of the door and
window.

page_text: -
Figure 4 is a section through line ax of Figure 3 looking in the direction of the
arrow.
Similar letters indicate corresponding parts in all the figures.
A indicates the window frame in which the sash B is guided by means of the usual
grooves. A is the cross piece upon which the sash usually rests when raised to its
upper or closed position, and a is the metal ledge which is usually provided on the
cross-piece to retain the sash in position thereon. indicates the corresponding piece
of metal placed on the bottom of the sash and adapted to engage, the piece a.
glass of the window.
is the
The apparatus for retaining the window sash at any desired height comprises a roller
or block (preferably cylindrical, of india-rubber or similar material preferably
provided with a lead or other heavy core c. This compound roller is mounted either
rigidly or freely, preferably the former, on a spindle d which is held in a pair of arms
or cranks D¹ which form part of a frame D. The cranks D'are provided with slots d'
to allow of adjusting the distance of the roller from the point of oscillation, the roller
therein being held in position by a nut d³ or its equivalent. The frame D is pivoted,
by means of a rod d², in a casting E, which is most conveniently attached at or about
the middle of the door frame preferably in the place usually occupied by the strap'
roller. The frame and cranks D D₁, and with them the roller C, may thus be swung
over toward the window so that the said roller rests against the glass C thereof or
against the sash itself, or the roller may be lifted and. swung back away from and
clear of the window as shown in dotted lines. The casting E is provided at each side
with a stop F, upon or in close proximity to which the cranks D¹ bear when in their,
most forward position, and thus the breaking of the glass by any abnormal pressure
thereon is avoided.. The height of these stops may be so adjusted that when the
cranks D rest upon them, the roller (, exoris sufficient pressure to maintain the
window in any desired position. The casting E or its equivalent is preferably held
in a slot cut for the purpose in the framing, and studs e and screws e¹ may be used to
retain it in place. If desired, the apparatus may be mounted between separate.
brackets instead of in the casting E.
Instead of weighting the roller (", a spring or springs may be employed for pressing"]
it inwards and downwards towards the window, but in most cases a spring will be
found unnecessary. The ordinary window strap, if used; may pass over the roller C
as it does over the ordinary roller and come between the roller and window
glass C as shown in dotted lines in Figure 1. The strap may however be dispensed
with and in that case hooks or handles may be used for raising and adjusting the
sash.
The mode of action is as follows:-
'
The roller C is normally held with suitable force against the window sash by its
spring or weighted core e as aforesaid, and forms an elastic cushion which holds the
sash up in the desired position and will prevent rattling or vibration as the back of
the window sash abuts against the metal strip a. The lifting strap G may be passed
as aforesaid over the roller between it and the glass with great advantage to the
grip or hold. To open or adjust the window, the roller and its frame are pulled back
by the strap or otherwise, thereby removing the grip or hold, and permitting the
sash to drop down. The aforesaid apparatus presents no obstacle to the window sash
being drawn freely up.
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 I
claim is :
1. An apparatus for retaining a railway carriage or other drop window sash at
any desired height, the said apparatus consisting of a weighted block or cylinder
faced with india-rubber or similar yielding material and pivotally mounted. in
proximity to the sash in such a manner that when swung forward it will by its own

page_text: weight and that of the sash bear against the sash with sufficient friction to hold the
same in position and prevent it from falling while offering no obstacle to the raising
of the sash, any abnormal pressure on the latter being prevented by a suitable stop
device, substantially as described.
2. The adjustable apparatus for retaining railway carriage or other windows at any
desired height taken as a whole, substantially as described and shown.
Dated this 29th day of January 1890.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, and London, Patent Agents.