Balancing the Sashes.
Year: 1886

page_text: Balancing the Sashes.
I THOMAS ROBSON of 1 Albion Crescent South Cliff Scarborough in the
County of Yorkshire Builder and Joiner do hereby declare the nature of this
invention to be as follows:-
The object of my improvement in the construction of window-sashes and
window-frames, and in the fitting of the same is chiefly to effect an economy in
the cost, as no linings pockets or sash-weights are required. The window-frame
is much more easily fitted and fixed, being simply plugged and nailed in the brick-
work orifice or window opening. A small pulley is fixed in the head of the
window-frame at right angles to the sash. Over this pulley passes a chain or cord
affixed at each end to the top and bottom sash. A groove is made in the frame in
which the sashes slide, divided as usual by a parting bead. The chain being
attached to each sash; as the bottom one is lifted the top one will fall. If one
sash is much heavier than the other a fastening is arranged by means of a grip or
otherwise which gives also an additional security. By means of the openings
at top and bottom of the window the ventilation of the room is completely and
efficiently effected.
LULMAN & Co.,
Agents.

page_text: Balancing the Sashes.
I, THOMAS ROBSON, of 1 Albion Crescent South Cliff Scarborough in the
County of Yorkshire 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 :-
The object of my improvement in the construction of Window-sashes and
Window-frames, and in the fitting of the same, is chiefly to effect an economy in
the cost, as no linings, pockets, or sash weights are required. The window-frame is
much more easily fixed, being simply plugged and nailed in the brickwork orifice
or window opening. A small pulley is fixed in the head of the window-frame at
right angles to the sash. Over this pulley passes a chain or cord affixed at each
end to the top and bottom sash respectively. A groove is made in the frame in
which the sashes slide, divided as usual by a parting bead. The chain being
attached as usual to each sash, as the bottom one is lifted the top one will fall.
If one sash is much heavier than the other, a fastening is arranged by means of a
grip or such like device which gives also additional security. By means of the
openings at top and bottom of the window the ventilation of the room is
completely and efficiently carried out.
In order that my invention may be better understood I append drawings in
which Fig. 1 is an elevation of the sash as fixed. A. A. is the lower and B. B.
the upper sash, and C. C. C. C. the sash frame. Chains or cords shewn at D. D.
run over the pulleys E. E. being fixed to the top and bottom sashes respectively.
Fig. 2. shews a section of the same in which similar letters refer to similar parts.
Fig. 3 shews an alternative and preferable device for fixing the pulleys into the
head of the sash frame by a plate which is fastened by screws from the lower or
underside. The rail of top sash is represented at B. the chains D. D., and the
pulley or pulleys E. E. The plate F. is fastened by screws G. G.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A method of balancing window sashes in their frames, constructed with
pulleys and chains or cords as illustrated and described substantially and as set
forth.
Dated this 10th day of November 1000