IMPROVEMENTS IN APPARA
Year: 1882

page_text: LETTERS PATENT to Edward Clennett of West Hartlepool in the County of
Durham Railway Clerk for an Invention of "IMPROVEMENTS IN APPARATUS
LETTERS PATENT to Edward Clennett of West Hartlepool in the County of
Durham Railway Clerk for an Invention of "IMPROVEMENTS IN APPARATUS
FOR RAISING AND LOWERING RAILWAY AND OTHER CARRIAGE WINDOWS.'
PROVISIONAL SPECIFICATION left by the said Edward Clennett at the
Office of the Commissioners of Patents on the 28th November 1882.
EDWARD CLENNETT of West Hartlepool in the county of Durham Railway clerk
IMPROVEMENTS IN APPARATUS FOR RAISING AND LOWERING RAILWAY. AND OTHER
CARRIAGE WINDOWS.
L
My improvements relate to an improved means of selfactingly raising and
adjusting the position of railway and other carriage windows.
I employ a coiled spring, in a suitable spring box, the said spring box, acting as
a pulley, a cord or chain attached to and passing round the pulley or spring box
passes over suitable guide pulleys to the bottom of the window sash, a catch wheel
is attached to the back of the pulley to which a catch is connected, having a knob
or handle, the whole excepting the knob or handle is enclosed in a suitable case
or cover and attached preferably inside the door, the action is as follows, on pushing
down the window the spring box or pulley rotates, and so charges the coiled spring,
on leaving loose of the window, it is held by the catch in any required position
and by touching the kob or handle of the catch it is released and moved to the
top by means of the spring.
•

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edward Clennett in the Great Seal Patent Office on the 28th May
1883.
EDWARD CLENNETT of West Hartlepool in the county of Durham Railway Clerk
IMPROVEMENTS IN APPARATUS FOR RAISING AND LOWERING RAILWAY AND OTHER
CARRIAGE WINDOWS.
My improvements relate to an improved means of selfactingly raising and
adjusting the position of railway and other carriage windows.
I employ a coiled spring, in a suitable spring box the said spring box acting
also as a pulley, a cord, chain, or strap passing round and attached to the pulley,
or spring box, passes over suitable guide pulleys, to the bottom of the window sash,
a catch wheel or friction wheel is attached to the back of the pulley, to which a
catch or clutch is connected, having a knob, handle or push, the whole excepting.
the knob, handle, or push, are enclosed in a suitable case or cover and attached
preferably inside the door the action is as follows;-on pushing down the window,
the spring box or pulley rotates, and so charges the coiled spring, on leaving loose
of the window, it is held by the catch in any required position, and by touching
the knob or handle of the catch, it is released and moved to the top by means of the
spring.
Such being the nature and object of this my said invention in order that the
same may be fully understood I have hereunto annexed a sheet of drawings
illustrative thereof, and marked the same with figures and letters of reference
similar letters refering to similar parts throughout the several views.
DESCRIPTION OF DRAWINGS
Fig. 1 is an elevation shewing inside of carriage door with my apparatus
attached, the window being closed.
Fig. 2. is an elevation of carriage door, shewing window half open the panel of
door being out to shew the apparatus.
Fig. 3. is a side elevation in section of Fig. 2
Fig. 4. is a detail view shewing inside of spring box, case and attachments
Fig. 5. is a sectional side elevation of Fig. 4.
Fig. 6. is an elevation of same.
I employ a coiled spring A, in and attached to a suitable spring box B, the spring
box acts also as a pulley C, and works upon the stud or pivot C¹ fixed in the
plate C, a cord chain or strap D passes round and is attached to the said pulley C,
and passes over suitable guide pulleys to the bottom of the window sash, or direct
to a suitable attachment or bracket E on the window sash F, a catch wheel is
formed upon the spring box or pulley, and a catch to operate upon the same or a
friction wheel G and clutch H is connected to a knob or hande or may be connected
to a push J by means of a lever or trigger K, supported by a spring L the whole
excepting the knob, handle or push J is enclosed in a case M preferably inside the
door; to prevent the window from being pulled up without touching the knob or
push I pivot a clutch N, to act upon the groove or side of the door frame P the
clutch being connected to the strap or chain D, by a second cord, strap, or chain R,
or a catch and rack may be arranged on the side of the window frame, the catch
being disengaged by lifting or pressing the knob or push.
The window sash has pulleys or runners S fixed at top and bottom to act upon
both the face and the sides of the groove of the door frame the face of the groove

page_text: is slightly recessed at T, T, to receive the pulleys when the window is up, the
window being forced forwards at the top by the usual springs, and at the bottom
by projections V acting upon grooves W in the inside rail, or springs may be used
at both top and bottom, a strip of indiarubber seating, or other suitable packing is
fixed upon the outside rail at ✗ see Fig. 3. by this means it is perfectly water-
tight.
In raising the window the action is as follows:-upon pressing the push J the
lever K moves the clutch H from contact with the friction wheel G, the coiled
spring A (which is charged) is released and so moves and rotates its box and
pulley winding up the strap D and sliding up the window F, upon releasing the
push J the window will stop in any position, and upon pushing down the window
the spring is again charged, other springs than the one shewn may be used, or
weights might be used in lieu of the springs.
Having thus fully described the nature and particulars of this my said invention,
and the manner in which the same is to be performed or carried into effect, I
would have it understood that I do not confine my claims to the precise details
shewn but what I claim to be secured to me by the hereinbefore in part recited
Letters Patent is,―
1. The spring box and pulley (actuated by a spring) constructed and operating
as shewn and described.
2. The push operating directly or indirectly upon a clutch or catch forming a
brake, in the manner and for the purpose as shewn and described.
8. The general arrangement for operating windows, as shewn, illustrated and
described.
In witness whereof I the said Edward Clennett have hereunto set my hand
and seal this sixteenth day of May in the year of our Lord one thousand
eight hundred and eighty three.
Witness
S GOURLEY J.P.
JOHN E. WALSH. Patent Agent and
Mechanical Draughtsman,
Halifax, Leeds
and Bradford
EDWARD CLENNETT (L.S.)