Improvements in Window Lifts and Draught Excluders.
Year: 1890

page_text: Date of Application, 11th Sept, 1890
Complete Specification Left, 26th May, 1891-Accepted, 27th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Window Lifts and Draught Excluders.
I, WILLIAM SAMUEL LAYCOCK of Ranmoor, Sheffield, in the County of York
Manufacturer, do hereby declare the nature of my invention to be as follows:-
I propose to construct a window lift, to aid in raising the sash or glass frame of
railway carriage doors, to which the invention is particularly adapted, on the
lazytong system, the expanding and contracting mechanism being fixed centrally in
the door casing.
The lower ends are pivotted to a hollow base and project a short distance past
the pivots, and these short ends are attached either directly or indirectly to
horizontal coiled springs secured to the case, by adjusting screws, so that their
tension may be regulated.
The action of the springs is to extend the lazytongs vertically, and raise the
sash.
In all the various methods used for excluding draughts of air, such as fall down
flaps, strips of wood raised by springs and like devices, the excluders can be moved
in such a manner that paper, cigar ends and other refuse can be put down the
opening into the door casing, which is very objectionable.
I propose to avoid this by making the excluder in the form of a bar of suitable
configuration in cross section, and connecting it closely to the underside of the glass
frame by means of a link at each end.
The links are pivotted to cach part in such a manner that the excluder bar swings
closely under the glass frame, and so that when the window or sash is raised, the
links permit the sash to be moved sideways in the usual manner and to rest upon
the fence rail.
The excluder bar is held up so as to close the mouth of the opening, and cannot
possibly be moved to permit anything to be passed into the interior of the hollow
door frame.
ROBT. F. DRURY, Fel. Inst. P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Window Lifts and Draught Excluders.
1, WILLIAM SAMUEL LAYCOCK, of Ranmoor, Sheffield, County of York,
Manufacturer 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 relates to improvements in window lifts and draught excluders,
such as are applied to the doors of railway carriages for the purpose of enabling
the glass frame or window to be raised without exertion and sustained in position,
and the excluder is to prevent the entrance of dust or draught into the compart-
ments of the carriage, through the aperture between the garnish rail and the
fence rail of the door, or in other words upwards through the well of the door.
In the various arrangements of excluders as heretofore made, the excluder
can be opened, or pushed on one side, or pressed down bodily in such a manner
that matches, cigar ends, and other refuse can be put through the opening
through which the glass frame slides into the door frame; which is not only
objectionable, but may also be dangerous.
My invention is in the first place to provide a simple, effective, and durable

page_text: arrangement of mechanism for balancing the weight of the sash or glass frame at
all points of its movement; and secondly to connect the dust excluder bar
with the glass frame in such a manner that while permitting all the necessary
movements of each part, it will be impossible to pass anything down into the
door frame.
The annexed drawings will illustrate my invention, and similar letters of reference
indicate similar parts in any of the figures.
Fig. 1, is a front elevation of the central portion of an excluder bar and glass
frame, and one method of attachment.
Fig. 2, is an end view of same when the sash is raised, and the window shut.
Fig. 3, is a similar view showing the sash in position to be lowered.
Fig. 4, elevation of carriage door with panel removed, showing window lift and
excluder.
Fig. 5, same view, with glass pressed down to its lowest position.
Fig. 6, enlarged view of window lift, with part removed to show spring.
The new arrangement connected with the dust and draught excluder is very
simple and effective; in the plan shown in Figs. 1, 2, 3, the excluder bar D, is
attached to the bottom of the glass frame J, by a link K, pivotted to both parts,
and preferably in the manner shown in the drawings, that is to say, by means of a
small plate K³, let into the excluder bar D; and to the glass frame J, by being
attached in a similar manner to the bottom of the strap plate L.
By this mechanical arrangement when the window is raised, the excluder D, is
carried up with it, and when in its highest position, the pivotted link K, permits
the glass frame J, to be moved forward or outward in the usual manner, and its
lower edge to be placed over the fence rail M, as shown in Fig. 2.
The method of constructing the attachment or connectiug device may be con-
siderably varied, all being necessarily mechanical equivalents to arrive at the same
result, thus I may dispense with the solid link K, and substitute an open or chain
link.
Or I may make the attachment in two parts, one part having an undercut or
dovetailed slot and the other part having a corresponding projection fitting into it,
so that they are capable of a cross sliding action one upon the other, thus
permitting the required movement of the glass frame towards the fence rail.
Any of these attachments may be used centrally, or if preferred one may be
placed at or near each end of the excluder bar.
The excluder bar being firmly connected to the glass frame, it is impossible to
press either end down, or otherwise produce an opening through which refuse may
be passed into the well of the door.
The expanding part of the window lift mechanism is constructed on the lazytongs
principle to which part separately I lay no claim. It consists of a series of bars A,
jointed together by pins B, in the usual manner; the top bars are connected by a
pin to a bracket C, which is fastened to the underside of the excluder bar D,
preferably in a permanent manner by screws.
The bottom bars are pivotted to a hollow base or spring frame E, and have short
cranked ends F, attached to a strong coiled spring G, by an intermediate link H,
but this link may be dispensed with if desired and the cranked ends F, be connected
directly with the springs.
The opposite end of each spring is held by a hook I, passed through the end of
the frame E, and preferably made so that the tension of the spring may be
regulated to the weight it has to lift or balance.
The frame E, is fixed to the bottom of the door casing, and the action of the
springs is to extend the lazytongs vertically and thus to raise the sash; but
if desired the apparatus may be reversed and the spring case be attached to the
excluder.
It will be understood that this part of my invention refers to the construction
of the spring box, and the arrangement of the springs and tension hooks,
producing a compact apparatus, simple in construction and effective in its action.

page_text: Having thus particularly described and ascertained the nature of my said
invention and in what manner the same is to be carried into practice, I declare
that what I claim is :-
1 For railway carriages and the like, a dust and draught excluder bar, attached
to the glass frame of the window, substantially in the manner hereinbefore described
and illustrated, or any equivalent modification thereof.
2-For railway carriages and the like, the window lifting mechanism, consisting
of the spring case E, springs G, tension hooks I, in combination with the bars A,
constructed substantially as herein before described and as illustrated.
ROBT. F. DRURY, Fel. Inst. P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
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