Improvements in or appertaining to Apparatus for Raising Railway and other Window Sashes.
Year: 1894

page_text: Date of Application, 31st Jan., 1894
Complete Specification Left, 30th Nov., 1894-Accepted, 29th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in or appertaining to Apparatus for Raising Railway
and other Window Sashes.
I, WATKIN HALL of Croft Cottage, College Road, Great Crosby in the County
of Lancaster, Civil Engineer do hereby declare the nature of this invention to be
as follows:-
-
This invention has for its object a method of and apparatus for raising and
lowering carriage window sashes and the like, and is based on the lazy tongs principle.
The carriage window rests on the lazy tongs. The bottom joints of the lazy
tongs have each two lines attached to them, or the central portion of one line.
One of these lines in each case passes round a pulley at the nearest bottom corner
of the window sash box and from thence passes up and is attached to one end of
the chain hereafter described. The other line in each instance passes over a pulley
near the centre of the bottom of the window sash box and rises to the other end of
the chain, thus the two centre lines each passing over their respective pulleys rise
to one end of the chain, the two side lines each passing over their respective
corner pulleys are joined to the other end of the chain. The chain passes over a
chain wheel. On the axis of this chain wheel is a pinion gearing into a spur
wheel, but other suitable gearing could be used instead, connecting it with another
axis on which is the handle used to raise and lower the window. By rotating this
handle through a sufficient arc, the window is raised and lowered and this handle
has a guard with notches to hold it when not in use. To raise the window there-
fore the handle is pressed out of the notch, rotated through the required arc and
then brought back into the notch.
Dated the 20th 1 of Th1904
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
Improvements in or appertaining to Apparatus for Raising Railway
and other Window Sashes.
I, WATKIN HALL of Croft Cottage, College Road, Great Crosby in the County
of Lancaster, Civil Engineer, 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 :—
This invention has for its object a method of and apparatus for raising and
lowering carriage window sashes and the like.
Originally proposed to rest the carriage window on lazy tongs, the bottom
joints of which had each two lines attached to them, or the central portion of one
line. One of these lines in each case passed round a pulley at the nearest bottom
corner of the window sash box and from thence passed up and was attached to the
end of a chain. The other line in each instance passed over a pulley near the
centre of the bottom of the window sash box and rose to the other end of the chain.
CD37

page_text: Since filing my Provisional however I have found that those lazy tongs and lines
are useless and unnecessary accessories, and I have therefore abandoned the use of
them, preferring to support the window directly on the aforesaid chain which
passes over chain wheels. On the axis of one chain wheel is a pinion gearing into
a spur wheel, but other suitable gearing could be used instead connecting it with
another axis on which is the handle used to raise and lower the window. By
rotating this handle through a sufficient arc, the window is raised and lowered and
this handle has a guard with notches to hold it when not in use. To raise the
window therefore the handle is pressed out of the notch, rotated through the
required arc and then brought back into the notch.
In the accompanying drawings,
Figure 1 shows a carriage door fitted with my improved apparatus, parts being
removed for clearness;
Figure 2 is a section on the line a b; and
Figures 3, 4, 5 and 6 enlarged details.
In these figures,
A is the carriage door, B the window sash, F a chain or sprocket wheel mounted
on a stud or pin ffixed to the cross rail G of the door, and H a second sprocket
wheel or pulley mounted in a bracket fixed to the bottom rail of the door. _A
chain I or band of wire, sash cord or the like which connects these wheels F and H is
also fixed to a joint pin J in a bracket J¹ on which the window sash rests.
K is a
pinion on the axis of the chain wheel F gearing with a spur wheel or toothed
segment L. This latter is rotated by means of a handle M which passes through
a curved slot N in a plate let into the cross rail G of the door, this handle projects
into the carriage whereby the people in the carriage by winding the handle can
raise or lower the window. To counteract the weight of the window, the toothed
segment L is provided with a spring E which can be placed at any convenient
point, and operated by the rod E. The ordinary buffer O can be placed below so
that when the window sash is let fall it shall not strike the bottom with force. The
toothed segment L carries a guard L¹ to close the slot N wherever the handle M
may be.
The before mentioned gearing is preferably arranged in a cut away
portion of the cross rail G as shown in Figures 2 and 3, and is also so designed
that when the handle M has travelled the full length of the curved slot N, the
sash B will have been raised to its full height and is clear of the fence plate. To
facilitate the opening of the window a spring b Figure 6 may be placed in the sash
groove, which spring, when the sash is up and about to engage the fence plate c is
compressed and will therefore press the sash inwards when raised by the handle M
clear of the said fence plate.
The mode of operation is as follows-
To raise the sash, the handle M is turned in the direction of the arrow, Figure 4,
and by means of the gearing L, K and F causes the chain I to travel, and thereby
raise the window sash, which raising is also assisted by the spring E. The sash is
raised a distance proportionable to the arc through which the handle M is rotated
The drawing shows the sash raised about half way. The handle M has a spring
locking catch m, Figure 5, which engages with notches m¹, Figure 4, to allow the
said handle being locked in any desired position. Any other locking device may
be employed, such as a spring pin on the handle engaging holes, or the handle
might be arranged to engage itself with a small spring when the sash is raised to
its highest point. The window sash may be lowered by reversing the movement of
the handle first of course raising the sash so as to clear the fence plate. Buffer
springs O have for their object to buffer the sash when the window is suddenly
lowered
I do not confine myself to the exact form of mechanism herein described and
illustrated, as this may be altered without departing from the spirit of the
invention, for instance pulleys may be employed instead of the sprocket wheels F
and H, and the gearing may take other forms well known to mechanics, whereby
the same results may be obtained.

page_text: 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. The improvements in apparatus for raising and lowering railway carriage and
other window sashes, which consists in supporting them on endless chains passing
round rotatable chain wheels fixed to the door and counterbalanced by springs,
whereby the sashes are in stable equilibrium in all positions, and so require little
force to move them up or down or hold them in position, substantially as described.
2. The improvement in or appertaining to apparatus for raising and lowering
railway carriage and other window sashes, which consists in supporting the sashes
on a travelling band or chain counterbalanced by a spring, and operated through
suitable interposed gearing, by means of a handle, thereby raising or lowering
the sashes, also means for locking same in any desired position substantially as
described.
3. The general arrangement and construction of the improved apparatus for
raising or lowering railway carriage or other window sashes substantially as
described and shown on the accompanying drawings.
Dated this 29th day of November 1894.
G. C. DYMOND,
Of 6, Lord Street, Liverpool, Patent Agent.
G. C. DYMOND,
Of 6, Lord Street, Liverpool, Patent Agent.