Improvements in Devices or Mechanism for Opening and Closing Fan or Swivel Lights, Upper Casement Windows, or the like.
Year: 1895

page_text: Date of Application, 12th Mar., 1895
Complete Specification Left, 4th Dec., 1895-Accepted, 4th Jan., 1896
PROVISIONAL SPECIFICATION.
Improvements in Devices or Mechanism for Opening and Closing
Fan or Swivel Lights, Upper Casement Windows, or the like.
I, THOMAS PICKUP of 76 Linaker Street, Southport in the County of Lancaster,
Joiner, do hereby declare the nature of this invention to be as follows:-
Hitherto fanlights and other hinged or pivoted sashes, windows, or ventilators,
have generally been fitted with a projecting arm or quadrant, which hinges on to a
bracket and holds the window or ventilator open or closed, or cords have been
fastened direct to the window sash. Now these methods have the following
disadvantages, that the projecting curved arm or quadrant gets in the way of the
window blind, or the cords are liable to wear out by constant grinding on corners.
By this invention, however, these drawbacks are obviated.
In carrying my invention into effect, I provide a link or arm hinged or pivoted
at bottom to a bracket fixed to the sash. This link is slotted nearly to the whole
of its length to engage with an inwardly projecting stud or pin fixed to the
framework of the window. The aforesaid bracket carries a pulley a little way
beyond where the link is pivoted, round which pulley passes the usual cord, the
ends of which are attached, one end to the loose end of the slotted arm or link,
and the other to the stud or pin fixed to the framework and engaging the slotted
link, or to other suitable point.
The mode of action of this improved device is as follows:-
In its closed position, the link or lever lies nearly parallel with the sash. To
open the sash, the cord attached to the loose end of the link or lever is pulled,
thereby opening the sash but owing to the slot of this link engaging the fixed stud
in the framework, the link is turned as it were on a pivot, as the stud may be said
to form a fulcrum for it, the lever moving with the sash. The amount of opening
of the sash is limited by the length of the slot in the link or lever. To close the
sash, the other cord that passes round the pulley on the sash and end of which is
fixed to the stud on framework or elsewhere, is pulled, thereby closing the window,
the slotted link being at the same time caused to assume a position approximately
parallel to the sash,
The two cords aforesaid can be fastened to a hook or eyelet, so as to keep the
sash in an open or closed position.
It will be seen that in whatever position the sash is placed, the link hardly
projects at all from the window.
Dated this 11th day of March 1895.

page_text: Improvements in Devices or Mechanism for Opening and Closing
Fan or Swivel Lights, Upper Casement Windows, or the like.
I, THOMAS PICKUP of 76 Linaker Street, Southport in the County of Lancaster,
Joiner, 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 :-
Hitherto fanlights and other hinged or pivoted sashes, windows, or ventilators,
have generally been fitted with a projecting arm or quadrant, which hinges on to a
bracket and holds the window or ventilator open or closed, or cords have been
fastened direct to the window sash. Now these methods have the following
disadvantages, that the projecting curved arm or quadraut gets in the way of the
window blind, or the cords are liable to wear out by constant grinding on corners.
By this invention, however, these drawbacks are obviated.
The invention will be understood from the following description, reference being
had to the accompanying drawings, in which,
Figure 1 is a front view of my invention applied to a sash or fanlight pivoted at
or about the centre ;
Figure 2, a vertical section ;
Figure 3, a side view on an enlarged scale with my opening and closing
mechanism;
Figure 4, a front view thereof;
Figure 5, a front elevation of my invention applied to a window sash hinged at
the side and opening outwardly ;
Figure 6, a cross section; and
Figure 7, a view of my invention applied to a window fanlight hinged at bottom
and opening inwardly.
Referring to Figures 1, 2, 3 and 4 :-
A is the window sash pivoted at B, C the window frame, and D a link or arm
hinged or pivoted at one end to a bracket D' fixed to the sash A. This link D is
slotted nearly the whole of its length to engage with an inwardly projecting stud or
pin E fixed to the framework C of the window. The aforesaid bracket D₁ carries
a pulley Fa little way beyond where the link is pivoted, round which passes the
usual cord G, the ends of which are attached one end to the loose end of the slotted
arm or link D and the other to the stud or pin E fixed to the framework and
engaging the slotted link, or to other suitable point.
The mode of action of this improved device is as follows:-
:-
In its closed position, the link or lever D lies practically parallel with the sash A
as shown by the dotted lines in Figure 2. To open the sash, the cord G attached
to the loose end of the link D or lever is pulled and owing to the slot in this link
engaging the fixed stud E the link is turned as it were on a pivot, as the stud may
be said to form a fulcrum for it, the lever forcing the sash open. The amount of
opening of the sash is limited by the length of the slot in the link or lever D. To
close the sash, the other end of the cord G that passes round the pulley F on the
sash and the end of which is fixed to the stud E on the framework or elsewhere is
pulled, thereby closing the sash, the slotted link being at the same time caused to
assume a position approximately parallel to the sash. The cord G can be fastened
to a hook or eyelet so as to keep the window in an open or closed position. It will
be seen that in whatever position the sash is placed the link hardly projects at all
from the window.
In Figures 5, 6 and 7, my invention is shown as applied to a sash opening
inwardly and hinged at side, and to a sash opening outwardly hinged at bottom

page_text: respectively, the arrangement in this case being on substantially the same lines as
in the previous figures, A being the sash, B the hinge, C the framework, D the
slotted lever or link, E the stud or pin engaging the slotted link and F the pulley
round which the cord G passes. In the case of the sash opening inwardly, shown
in Figure 7, the stud E is fixed to the sash, the arm D hinged to the window
frame E and the ends of the cord G fastened to the sash.
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 [
claim is :-
1. The improvement in devices for opening and closing fan or swivel lights,
upper casement windows or the like, namely, forming them of a slotted link or its
equivalent hinged to the sash and the slot of said link engaging a projecting pin or
stud secured to the window frame, in combination with a cord or line fastened at
one end to the free end of the slotted link and at the other passing round a pulley
on the sash and attached to a fixed point, or any mere mechanical equivalent thereof
such as hinging the slotted arm to the window frame and securing the projecting
stud and the ends of the line to the sash substantially as described.
2. The mechanism for opening and closing fanlights and other hinged or pivoted
sashes, windows or ventilators substantially as described and shown.
Dated this 3rd day of December 1895.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents.