Improved Means for Adjusting Railway Carriage Windows and the like at any Desired Height.
Year: 1888

page_text: Date of Application, 3rd July, 1888
Complete Specification Left, 2nd Apr., 1889
Complete Specification Accepted, 4th May, 1889
Improved Means for Adjusting Railway Carriage Windows and the
like at any Desired Height.
I, WILLIAM HENRY JENNER, of Manor Cottage, Manor Road, Woodford Green, in
the County of Essex, Engineer, do hereby declare the nature of this Invention to be
as follows:-
The object of my Invention is to dispense with the straps and other appliances at
present used to fix at required heights the sliding sashes, shutters, or wickets, of
railway carriages, tramcars, or the like, or ordinary house sashes, and to substitute
therefor a simpler and more easily manipulated appliance, which appliance by enabling
the sash to fit close to the groove in which it slides will also prevent the tendency to
vibration.
My Invention consists in the use of a metal cam arranged to operate against the
edge or side of the sash, and having inserted below its tapering metal edge a piece or
tongue of india rubber, which, by friction with the descending sash draws down the
cam on its axis, till the tapering metal edge of the cam presses and wedges itself
tightly against the sash and thus stops its descent. The cam offers no resistance to
the raising of the window to any chosen height but fixes it directly the operator lets
go and the sash commences to descerd, any attempt to force the window down only
fixing it tighter by causing the cam to press harder into the sash. The raising of the
cam for releasing the sash and lowering the window is effected by a lever, actuated
by hand and connected to and turning with the axis of the cam, this lever being so
slanted that its weight may act on the cam to keep the india rubber always against
the sash.
The parts of the apparatus may be connected together in any convenient way and
where necessary a mortise may be cut in the window frame to receive the cam.
An adjustable spring may also be added to steady the window and check its sudden
descent.

page_text: Improved means for Adjusting Kanway Curriage windows and the
like at any Desired Height.
J, WILLIAM HENRY JENNER, of Manor Cottage, Manor Road, Woodford Green, in
the County of Essex, Engineer, do hereby declare the nature of this Invention, and in
what manner the same is to be performed to ha particularly described and ascertained
in and by the following statement:—
The object of my Invention is to disponse with the straps and other appliances at
present used to fix at required heights the sliding sashes shutters or wickets of
Railway carriages Tramcars or the like, or ordinary house sashes, and to substituto
therefor a simpler and moro easily manipulated appliance, which appliance, by enabling
the sash to fit close in the groove in which it slides, will also provent the tendency to
vibration.
This appliance consists of a suitably-shaped metal cam arranged to operate against
one of the side edges or other part of the sash and automatically stop its descent until
the cam is rotated to release tho said sash.
And in order more clearly to explain my Invention I will refer to the accompanying
sheet of drawings in which similar letters of referenco indiente corresponding parts in
both the Figures.
Figure 1 is a side elevation partly in section shewing the apparatus as applied to u
vertically sliding sash, and Figure 2 is an end elevation at right angles to Figure 1.
F is the door framo mortised at M to receive the cam 0, which is fixed upon and
turns with its axis A. El is a handle outside the frame of the door fitted to the end
of and also turning with the axis A, which axis rotates in bearings B sunk in the
frame on each side of the cam. S is one edge of the sash, and T is an india rubber
facing inserted in or placed upon the cam C so as to hear against the edge of the said
sash as shown, the cam and its handle being proforably disposed so that thoir weight
may cause the rubber face of the cam to bear constantly against the edge S of tho
sash. The groove in which the sash slides is indicated by G.
The sash may be raised to the desired height with practically no resistance from
the cam, but as soon as the sash is released and commences to fall in the direction
of the arrow, the cam (by the friction between its india rubber facing and the
edge of the sash is rotated through a small angle into the position shown in dotted
linos in Figure 1, the india rubber facing T being at the same time compressed,
with the result that the sash after a very slight downward movement is tightly
jammed between the face of the cam and the bottom of the groove in the door
frame at the opposite ego of tho sash, with the result that the said sash is prevented
from sliding any further down. By raising the handle or lover H the cam is
raised, and the sash, being thus released, slides down at once, an india rubber or
other bed, an adjustable spring, or other suitable appliance, being provided if it
be desired to check its too sudden descent. Two or more cams may be mechanically

page_text: connected to be operated from one handle or lever without departing from the nature
of my Invention, and the handle or lever H may be on either or both sides of the
door frame. Also, the cam may be applied at any convenient part of the sash, and
the parts of the apparatus may be connected in any desired way."
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:
-
In Railway or other carriage windows or the like, for the purpose of automatically
retaining the movable sashes of such windows at any desired height to which they
may be raised, the use of a metal cam of suitable form, which may or may not have
an india rubber facing, in combination with a lever or handle for operating the
said cam to release the sash when the same is to be lowered, substantially as described
and illustrated in the accompanying drawings.
CHARLES J. JONES,
19, Spital Square, E.,
Agent for the Applicant.