Improvements in Apparatus for Balancing and Operating Windows.
Year: 1891

page_text: Date of Application, 24th Mar., 1891
Complete Specification Loft 22nd Dec.
1891-Accented. 23rd Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Balancing and Operating
Windows.
I, WILLIAM HUGHES Quarry View Stores Bethesda near Bangor in the
County of Carnarvon North Wales Builder and Contractor do hereby declare
the nature of this invention to be as follows:-
The following is a brief description of the "New Sash Spring Coil and Axle
Pulley." A spring made of thin steel is inserted in a hollow groove of the wheel
of an axle pulley which pulley can be fixed to either casement or solid frame
window. The spiral spring is wound up tight and held in position by means of
pins which run through it and connect it with the axle of the pulley, the spring coil
runs outside the wheel to which it also is fastened when the window is opened the
spring coil pays out when closed it winds up being set in action and governed by
the spring inside the pulley wheel. No cords or other appliances are required and
the pulley made of cast iron is simply let in flush with the woodwork, and inside of
sash. Two to be attached to window-one each side.
Dried Wh 1001
WILLIAM HUGHES.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Balancing and Operating
Windows.
I, WILLIAM HUGHES of Quarry View Stores, Bethesda near Bangor in the
County of Carnarvon, North Wales, Builder and Contractor 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 :-
Usually the sliding sashes in window frames are counterpoised by means of
weights attached to cords passing over pulleys fitted in the window frames. The
object of my invention is to dispense with the weights and employ in their stead
spring pulleys the springs of which will be wound up by movement of the window
sash in one direction and will partly unwind themselves during the movement of
the window sash in the contrary direction.
For this purpose I make spring actuated pulleys and adapt them to the window
sashes in the manner shown by the accompanying drawings in which
Figure 1 is a front elevation partly in section showing a window frame with top
and bottom sashes closed therein.
Figure 2 is a front elevation of one of the spring pulleys partly in section,
Figure 3 is a plan of the upper side of Figure 2 and
Figure 4 is a side elevation of Figure 2.
A is the window frame in which the sashes B and C are arranged to slide in
channels formed by beadings in the usual way.
Part of the window frame A
shown in Figure 1 is removed to obtain a sectional view illustrating the application
of the spring pulley D to the lower sash C.
E is a casting having brackets F G projecting therefrom to carry the arbor H
which is prevented from turning by the screw J fastening it at one end to the
bracket G. The arbor H is provided with a hook K to engage one end of a
flat spring L coiled within the pulley D and riveted to the pulley as shown at M
close to the point at which it passes from the interior hollow part of the pulley to
the outside thereof upon which it is also coiled and uncoiled by the movement of
De

page_text: the window sash to which the extremity of the flat spring L is secured by screws
as shown at N in Figure 1.
A set of four of the spring pulleys shown in Figures 2, 3 and 4 are employed
for a window frame as that shown in Figure 1 having two sashes, the upper one
to be pulled down and the lower one to be lifted up for opening the window to the
full extent above and below. In Figure 1 the two spring pulleys seen are applied
to the lower sash which being drawn in its closed position shows the flat spring L
uncoiled to its fullest extent from outside the pulley D the portion of the same flat
spring within the hollow part of the pulley D being consequently wound to its
fullest tension upon the fixed arbor H. The similar pair of spring pulleys applied
to the upper sash are immediately in the rear of the pair which are applied to the
lower sash. Consequently they cannot be seen in Figure 1 but they are applied to
the upper sash in exactly the same way that the pair shown are applied to the lower
sash and therefore the upper sash being closed the flat springs are coiled to their
fullest extent upon the outside of the pulleys, the portion within the hollow pulleys
being unwound to its minimum tension upon the arbor.
The castings E are embedded in the woodwork so as to form no obstruction in
the channels in which the window sashes slide. Instead of continuing the flat
spring L from the inside to outside the pulley D it may be wholly contained
within the hollow part of the pulley and a cord or other band be provided to
coil upon and be uncoiled from the outside of the pulley by operating the sashes.
In the case of a cord being employed the sash stiles are grooved longitudinally to
enclose the cord.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what I
claim is :-
Apparatus for partly counterpoising sliding sashes in window frames consisting
of spring actuated pulleys recessed in the window frames and applied to the
sashes by means of bauds or cords to coil thereon and uncoil therefrom for operating
the sashes substantially as described.
Dated this 22nd day of December 1891.
AYRTON & THOMAS,
Agents for the Applicant.