Improvements in Apparatus for Raising and Lowering Windows in Doors of Railway Carriages or other Road Vehicles, or in other Doors, or Sliding Shutters or Panels or the like in Houses or Buildings.
Year: 1891

page_text: Date of Application, 18th Aug., 1891
Complete Specification Left, 5th May, 1892-Accepted, 25th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Raising and Lowering Windows
in Doors of Railway Carriages or other Road Vehicles, or in
other Doors, or Sliding Shutters or Panels or the like in Houses
or Buildings.
We ROBERT HYDE of Derbyshire House Darnall in the County of York
Engineer, and RALPH HYDE of No. 2 Brinsworth Road Rotherham .in the same
County Provision Dealer do hereby declare the nature of this invention to be as
follows:-
According to this invention we cause the operation of raising and lowering, and
also the regulating of the height, of windows or sliding shutters or panels or the
like to be much easier of accomplishment than as at present,-by applying and using
a novel combination of folding levers and a spring; or springs can be used, but by
preference I use only one spring; all being suitably connected together, and as
hereinafter described.
In carrying out our invention in practice we apply and use one spiral spring (0.
more can be used) of any suitable shape length and strength, the spring is placed
between two pulleys or quadrants to which it is connected by suitable chains, or
their equivalent, attached to each end of the spring and also to the pulley (or
pulleys); they can be made of brass or iron or of any suitable material; they will
be fixed one at or near each end of a frame which can be made in one or more
pieces, and it is arranged to rest in the bottom of the window recess in a railway
carriage or other door; the frame is made of iron or brass or of any material
suitable. The frame can be secured underneath the sliding window rest and the
apparatus will work in a contrary direction.
We employ two levers each being provided with a folding joint at or near the
middle of each lever, thereby enabling the levers to fold in a similar manner to the
opening and shutting of a two-foot rule. One end of each lever is secured to each
pulley, the other end of each lever is jointed to the underside of the sliding window
or rest, and the levers cross each other. One end of each of the levers may be
jointed to the sliding window or frame in case no sliding window rest be used.
The apparatus is intended and can be made to balance the weight of the slide
window in a railway carriage or other door and to hold it in any required position
in its travel, a gentle pressure of the hand to lower it, and a corresponding lift by
the hand to raise it to any position required, being all that is necessary.
We fix springs and suitable cushions to stop any rattle or noise, also stops or
cushions to take or receive the weight of the window or sash or shutter when
pushed down quickly, we also apply stops to regulate the travel or lift of the
window.
The joints in the levers are so arranged as to describe part of a circle as the
window or shutter is raised or lowered, and in action they approach each other
thereby shortening the leverage as the spring gets weaker and thus nearly a uniform
lift is obtained; the required set of the spring will be adjusted by a screw or its
equivalent.
Any suitable draught excluder can be applied to and used with our improved
apparatus or not as may be found desirable.
D
1001
BRISTOW HUNT, R.P.A.,
Aldine Chambers, Sheffield, Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Raising and Lowering Windows
in Doors of Railway Carriages or other Road Vehicles, or in
other Doors, or Sliding Shutters or Panels or the like in Houses
or Buildings.
We ROBERT HYDE of Derbyshire House Darnall in the County of York
Engineer, and RALPH HYDE of No. 2 Brinsworth Road Rotherham in the same
County Provision Dealer, 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 in writing, and on reference to the
accompanying drawings :-
This invention relates to improved and more efficient apparatus or means for.
raising and lowering windows or sashes, such as those in railway carriage doors or
cab doors or the doors of other road vehicles, or sliding shutters or panels or the
like in houses or buildings, by which invention we greatly facilitate the operations
of raising and lowering and also of regulating the height of the windows or sliding
sashes or shutters or panels or the like, by providing applying and using a novel
combination of folding jointed levers in connectiou with-by preference-one spiral
spring, (or more springs can be used if necessary) the whole being connected
together and arranged as hereinafter specified.
In order that our said invention may be fully understood, and the mode we prefer
to adopt in carrying it into practical effect, we have shown, on the accompanying
two sheets of explanatory drawings, the invention applied-for example-to a
railway carriage door, the said drawings being marked with figures and letters of
reference corresponding with those in the following description, like reference
letters indicating the same parts in all the figures.
Figure 1, is an elevation of the inside of a railway carriage door with its lower
casing removed and showing our apparatus applied therein, the window being
represented as partly open.
Figure 2, is a front elevation (drawn full size) of the spring and its connection
to one of the pulleys or quadrants of the folding jointed levers.
Figure 3, shows the slotted plate used to tighten up or regulate the tension of the
spring; and,
Figure 4, is a plan of Figure 2, showing one of the pulleys or quadrants in
working position in the frame with pin passing through the frame and the pulley or
quadrant.
These
According to the mode in which we prefer to carry out our invention in practice,
we apply and use a spiral spring a, of any suitable shape length and strength, it is
placed at the bottom in the lower casing of the door between two pulleys or
quadrants b, to which it is connected by suitable chains such as c, d, (or their
equivalent) one of them c, being more distinctly shown in Figure 2.
chains c, and d, are attached to the spring a, as shown and also to the pulleys
or quadrants b. The pulleys or quadrants are or can be made solid with the
ends of the folding jointed levers g, and g¹, hereinafter described. The pulleys
or quadrants are fixed one at or near to each end of the frame e, which frame
can be made in one or more pieces, and it is provided with two flanges f, one
on each side of it extending about two thirds of the length of the frame e;
they serve the purpose of guide rails or guide fences for the folding levers g,
and g', when they are down at the bottom of the carriage door or close to the
frame e, which frame is arranged to fit and rest in the bottom of the window
recess of the door, as seen in Figure 1.
If required the frame e, can be made without flanges, it can also be secured
underneath the sliding window rest and the apparatus would then work in a
contrary direction, that is, upside down.

page_text: The two levers g, and g¹, which we provide and employ, are made with
folding joints h, situated at or near the middle of each lever thereby enabling
them to fold in a similar manner to the opening and shutting a two-foot rule.
The lower end of one of the levers g, is let into the side of one of the pulleys
or quadrants b, the centre pin i, of which passes through the lever near its end,
and the lower end of the other lever g', is similarly connected with the other
pulley or quadrant. The upper end of each lever is jointed or connected to one
of the studs or brackets j, secured to the underside of the sliding window rest k,
and the levers when in action cross or overlap each other as seen in Figure 1.
Or, one end of each of the levers can be jointed or connected to the sliding
window or frame in case no window rest is arranged to be used.
When in action those ends of the levers which are jointed to the studs or
brackets j, move in a vertical direction and at right angles with the frame of
the apparatus. The middle joints 1, of the levers describe part of a circle or
radius consequently shortening the leverage and reducing the strain on the spring
as it becomes weaker when the sliding window, or shutter or the like, is at or
near the top thereby enabling the apparatus to balance the window, or shutter
or the like, and hold it in any required position in its travel, a gentle pressure
of the hand to lower it and a corresponding lift by the hand to raise it to any
required position being all that is necessary. The leverage, it will be under-
stood, lengthens with the extra power of the spring a, and as the spring works
weaker the leverage becomes shorter thereby giving nearly a uniform lift through-
out the length of the travel of the window or shutter or the like.
The required set or tension of the spring a, is adjusted by means of a plate I,
which is slotted on each edge as shown at Figure 3; one end of the spring is
passed through the slots as seen in Figure 2; the plate is made with a hole m,
through it to receive one of the hooks or connectors n, attached to the end of
the chain c. Or, the required set of the spring can be adjusted by a screw and
swivel link connected with one of the chains.
The great advantage obtained by employing only one spring in our apparatus
(instead of two springs or more) is, that an exactly equal force is applied to
each of the jointed levers g, and y'; and by reason of employing only two levers
jointed at or near the middle thereof the apparatus will work more advan-
tageously with one spring only; the combined action of the levers and spring
constituting a novel and useful arrangement for successfully accomplishing the
object of our invention.
The requisite travel or height of lift of the window or sash or shutter can
also be regulated by placing stops on the levers or on the pulleys or quadrants.
To stop any rattle or noise we fix suitable rubber springs or cushions in the
grooves o, o, to take or receive the weight of the window or sash or shutter
when pushed down quickly.
The working parts of our apparatus can be made of brass or iron or steel, or
of any other suitable material, or of a combination of metals, and the mechanism
is arranged to readily fit into a railway carriage, cab, or other door without
cutting away the woodwork specially therefor.
Any suitable draught excluder can be applied to and used in conjunction
with our raising and lowering apparatus, or not, as required or
desirable.
as found
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be, or can be performed we declare that
what we claim is :-
The novel and peculiar construction, combination and arrangement of two
folding jointed levers, such as the levers g, and g', in connection with one spring
(preferably) such as the spring a, and their combined action, such mechanism
constituting improved and more simple and effective means for raising lowering
and regulating the height of windows or sashes in railway carriage, cab, or

page_text: other doors, or sliding shutters, or panels or the like, in houses or buildings;
substantially as herein before described and as illustrated on the accompanying
two sheets of explanatory drawings.
Dated this 3rd day of May 1892.
BRISTOW HUNT, R.P.A.,
Aldine Chambers, Sheffield, Agent for the Applicants.