Improvements in or connected with Window Sashes.
Year: 1895

page_text: Date of Application, 8th Mar., 1895
- Complete Specification Left, 3rd Dec., 1895-Accepted, 4th Jan., 1898
PROVISIONAL SPECIFICATION.
Improvements in or connected with Window Sashes.
JOHN WELBY, 44 Brunswick Square, Horne Bay, Joiner, do hereby declare
the nature of this invention to be as follows:-
My invention relates to a new method of banging window sashes, and consists in
the employment of a toothed wheel gearing with a sliding rack or weight ou une
Iside and with a rack or series of notches or projections formed upon or connected
to the sash itself on the other side. The rack or sliding weight aforesaid is
capable of vertical movement between the pulley stile and the back lining of the
window frame, so that as the sash is raised the weight or rack falls, but us it is
lowered the weight or rack rises.
The saah is thus balanced without the use of cords or the like as at present
employed. The weight of the sliding rack should be adjusted proportionately to
the weight of the sash to which it is to be applied.
Dated this 6th day of March 1895.
HUGHES & YOUNG,
23 Coleman Street, London, E.C., Agents for Applicaut.
I, JOHN WELBY, 44 Brunswick Square, Herne Bay, Joiner, do hereby declaro
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 :-
The object of my invention is to balance window sashes without the use of sash
cords, thus doing away with the inconvenience at present caused by the frequent
breakages of the latter.
To the end or
I carry out my invention in or in about the following manner.
back or front of each sash stile I attach a rack, slotted strip of metal or the like.
This rack or the like gears into a toothed pinion turning on a fixed axis in the
pulley stile and on the opposite side of which is a balance weight having a rack.
like edge in which the pinion also gears. The weight runs in a casing of which
the back lining forms one side and of such dimensions as will keep the rack-like
edge of the weight in gear with the piuion. The weight is made equal in length
to the height of the sash, and half the weight thereof. In assembling the sash,
pinion, and weight in the first instance, they should be so arranged that the top of
the sash-rack and the bottom of the weight rack are at a slight distance respectively
above and below the toothed pinion. As it is evident that when revolved one side
of the pinion will go up, while the other goes down, it follows that when the sash
is pushed up the weight will go down and vice versa. The weights used may be
solid fluted, or hollow, and in the latter case they may be loaded to adjust the
weight to a nicety. The invention is applicable to dinner and other lifts, and to
any analogous purpose or purposes.

page_text: In order that my invention may be the more readily understood; I make
reference to the accompanying sheet of drawings, but I do not confine myself to
the precise details, relative proportions or disposition of parts described in the
Specification or shown in the drawings as any or all of them may be varied
without departing from the invention.
Fig. 1 is a longitudinal section showing the sash, pinion and weight,
Fig. 2 is a transverse section showing the rack, pinion and weight at the inside
of the sash, instead of at the edge.
Fig. 3 shows various sections of weight.
Similar letters refer to the same parts in each figure.
a is the sash stile, rack or elotted strips on end or side of sash, e pulley stile,
d toothed pinion, e weight having a rack-like edge f, g the weight casing, and A the
back lining, section of solid weight, e section of fluted weight,
hollow weight.
section of
Having now particularly described and ascertained the nature of my said inveh-
tion and in what manner the same is to ho performed, I declare that what
claim is :-
.. 1
The improved method of balancing window sashes, dinner or other lifts or the
like, by attaching to or forming on the moveable sash or the like, a rack or
equivalent gearing into a tooth pinion turning on a fixed axis, on the opposite
side of which is a weight having a rack-like edge also gearing into the aforesaid
toothed pinion, the whole being so arranged that when the sash is moved
upwards, the weight moves downwards and vice versa, substantially as described
in the above Specification, and exemplified in the accompanying drawings.
Dated this 3rd day of December 1895.
HUGHES & YOUNG,
23 Coleman Street, London, E.C., Agents for the Applicant.