New or Improved Means for Raising and Lowering Carriage Windows and the like.
Year: 1893

page_text: Date of Application, 23rd Jan., 1893
Complete Specification Left, 23rd Oct., 1893-Accepted, 25th Nov., 1893
PROVISIONAL SPECIFICATION.
New or Improved Means for Raising and Lowering Carriage
Windows and the like.
I, THOMAS DICKINSON of 76 George Street, Hyde, Hair Dresser do hereby
declare the nature of my said invention to be as follows:-
The object of my invention is to enable carriage windows to be raised and
lowered and retained at any height with greater facility than heretofore and
without the necessity of the occupant of the carriage getting up from his or
her seat.
To accomplish this I employ an Archimedean screw and support it in suitable
bearings at a point, by preference, just below the window opening of the carriage
door, and at each end of said screw I mount a chain or spiked wheel over which
may pass a chain with links or openings corresponding to the projections or spikes
of the wheel.
Said chains may be endless and passed over pulleys enclosed in the lower
portion of the carriage door to one portion of which the bottom end of the window
is secured and to another portion a set of counter balancing weights so balancing
the window, or instead of said chains being endless they may be in a length, one
end secured to the window and the opposite end secured to the weight so dispensing
with the lower pulleys.
Upon the screw aforesaid is mounted a nut capable of working freely thereon,
and said nut is secured to a plate onto which is pivoted a small bar or its
equivalent extending through a slot or opening in the door frame to the inside of
the carriage where it is provided with a handle or knob.
By taking hold of said handle or knob and pushing it forward, the slot afore-
said extending across the door to allow for this, the nut which is mounted on the
screw is caused to travel along the screw and so cause said screw to rotate and
simultaneously rotate the pulleys over which the chains aforesaid pass and thus
raise or elevate the window. By drawing the handle back the motion of the screw
and pulleys is reversed and the window lowered.
In order to fix or lock the window at any height I cause the bar aforesaid to
which the knob or handle is attached to enter a triangular opening or aperture
formed in a small plate capable of sliding up and down in suitable guides.
Beneath this sliding plate I affix a strip of metal extending from side to side of
the window frame with a series of slots or grooves and into one of these slots the
sliding plate takes under the action of a. spring unless lifted up by the lever
aforesaid which is formed with a knife edge taking into the upper angle of the
opening aforesaid and which when pressed against either of two sides of the said
opening causes the slide to rise and so come out of the slot or groove.
This sliding plate by falling into one of these slots locks the nut on the screw
and keeps the knob lever in a central position and fixes the window in a raised
position. By pushing the knob the lever moves upon its pivot and causes the
knife end to work against the sliding plate and thus raise it out of the slot and
allow the nut to travel along the screw and raise or lower the window.
Dated this 21st day of January 1893.

page_text: New or Improved Means for Raising and 'Lowering Carriage
Windows and the like.
I, THOMAS DICKINSON, of 76 George Street, Hyde, Hairdresser, do hereby
declare the nature of my said invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
The object of my invention is to enable carriage windows to be raised and
lowered and retained at any height with greater facility than heretofore and
without the necessity of the occupant of the carriage getting up from his or
her seat.
My invention also has for its object to dispense with the leather or other strap
hitherto used which is found to be a source of great expense to railway companies
by reason of unscrupulous people damaging and in some cases entirely appropriating
the strap.
•
And in order that my said invention shall be the more readily understood and
carried into practical effect I have hereunto annexed a sheet of drawings and will
now proceed to describe the same with the assistance of the various figures and
letters of reference marked thereon.
Fig. 1 illustrates a carriage door shewn from the inside of the carriage, part of
said door being removed to shew the application of my invention more clearly.
Fig. 2 is an end or side exterior view.
Figs. 3 to 8 are detail views on an enlarged scale.
In accordance with my invention I employ an Archimedean screw A and I support
it in suitable bearings B, B at a point immediately below the window opening as
illustrated. At each end of this screw I mount a wheel C with (or without)
spikes or projections and over each of these wheels I pass a cord or chain I) the
links of said chain taking onto the spikes of the wheel. To one extremity of
each of these cords or chains I attach a balance weight D' whilst to the other
extremity I connect the bottom of the sliding window E.
Mounted upon the screw A is a nut or runner F with inverted T piece F' working
in slot F said nut being capable of working to and fro on said screw from side to
side of the window or door. It will be clearly evident that as such nut is traversed
to and fro and is prevented turning by the T piece F¹ and slot F it will rotate the
pulleys or wheels C, C and hence raise or lower the window according to the
direction in which the nut travels.
These fittings are enclosed within the frame of the door, and a slot is left in
the door frame for a handle or knob F to be connected to the nut or runner E.
. In order to fix or lock the window at any desired height, say at the height shewn
in Fig. 1, the nut is secured to a plate onto which is pivoted a small bar or its
equivalent connected to the handle F³. Said bar enters a triangular opening in a
small plate capable of sliding up and down. Beneath this sliding plate is a strip of
metal extending across the window with slots, grooves or notches and into one
of which slots, grooves or notches the sliding plate drops and so prevents the
nut from travelling backward or forward and retains the window in a raised
position.
To release the nut and lower the window or to fix the window at another
elevation the knob or handle is pushed forward thus causing the lever to which it is
attached and which enters the angular opening in the sliding plate to press against
one of the sides of the opening and so, raise the plate out of the notch. The nut is
thus released and the further movement of the handle raises or lowers the window.
By letting go such handle the plate again falls into one of the notches and so
automatically locks or fixes the window in a raised position. In Figs. 4, 5, 6 and 7
of the accompanying drawing I have illustrated a simplified form of apparatus for

page_text: effecting the locking of the window in a raised position, the handle or knob F" being
formed with a cranked extremity G which is pivoted on the pin H to the nut or
runner F as illustrated, and which cranked extremity takes under the overhanging
portion I of the sliding plate J (seen separately in Fig. 8). Normally the sliding
plate falls between the teeth of the toothed plate K or its equivalent and so locks
the nut, a spring L being provided to keep it in gear with the plate as seen more
clearly in Figs. 4 and 5. By now pushing.the handle F' to and fro, the same turns
on the pin H and causes the cranked extremity G to press against the portion I
of the sliding plate and so raise and disengage the plate from the toothed plate K
It will be observed that the teeth of the
as seen more clearly in Figs. 6 and 7.
plate K are more or less of a ratchet tooth form to enable the sliding plate to pass
readily over them in one direction, but be retained and caught by them in the
opposite direction.
These improved means of raising and lowering windows and locking devices are
applicable to other than carriage windows and may be applied to other parts of a
window frame than that hereinbefore described.
If desired the chains or cords D may be made endless and caused to pass round a
pulley within the lower portion of the door, the weight and window being attached
at suitable points along the length of such chains.
Having thus particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I wish it to be distinctly
understood that I do not confine myself to the precise details relative proportions
or dimensions of the parts of my improved window raising apparatus nor to the
specific form and arrangement of apparatus for locking the window in a raised
position as the same may be considerably varied without departing from, my
invention, but what I do claim and desire to secure by Letters Patent is.-
1st. In means for raising and lowering carriage and other windows the use and
employment of an Archimedean screw fitted with a traversing nut and provided with
pulleys or wheels over which cords or chains may pass secured to the window and a
counter balancing weight or weights and mounted and operating substantially as
Bet forth and illustrated.
2nd. In combination with my improved window raising apparatus for fixing the
window in a raised position the use and employment of the locking device (and
its modification) substantially as hereinbefore described and illustrated on the
accompanying drawing.
Dated this 21st day of October 1893.
JOHN G. WILSON & CO.,
Agents.