An Improved Apparatus applicable for the Raising or Lowering Window-sashes or the like.
Year: 1890

page_text: Date of Application, 5th Mar., 1890
Complete Specification Left, 4th Dec., 1890-Accepted, 10th Jan., 1891
PROVISIONAL SPECIFICATION.
An Improved Apparatus applicable for the Raising or Lowering
Window-sashes or the like.
We, JAMES WILLIAM THOMAS, Music Dealer, of 63 Fleet Street, and THOMAS
STABB, Builder, of 7 Springfield Terrace, both of Torquay, in the County of Devon-
shire, do hereby declare the nature of this invention to be as follows:-
Our invention relates to an apparatus, applicable for the raising or lowering window
sashes or the like, and consists of a mechanical contrivance boxed in at the top of the
window head and connected by sash lines to the top and bottom window sashes, which
the aforesaid apparatus will permit either of the sashes to be placed in any desirable
position.
This invention is constructed with a loose or fixed head plate; and to this plate we
place a fixed transverse axle or spindle supported by bearers. On the axle we place
two loose drums, and to each drum are provided with several divisions, and a narrow
cog wheel in its largest diameter. At the top of the box we attach two horizontal
rods which work slightly on pivots, and on these rods is placed loosely a jaw to
support a small cog wheel. A sliding weight on each rod runs up or down for the
purpose of checking the sash in its fall by forcing the small cog wheel, against the
druin cog. The weights are attached to each drum by a cord and are operated by
the action of springs hereinafter contained.
To each drum we connect (working on a separate axle), a spring with a flanged
pulley, for the purpose of winding several coils of chain round the pulley and also
around the outer division of each drum, each spring is set so that it will, directly
either sash is lifted revolve the drum and by that means wind the sash line on each
side; when the weight is paid out and slides down the rod to force the small cog on
the drum cogwheel.
On the sash being closed the sash lines run off the drum which causes the drum to
revolve and to wind the chain off the spring pull on purpose to reset the spring when
repeating the operation of lifting or lowering the sash
The sash lines are fixed to the top of each sash and run over small pulleys at the top
at each end of the head plate.
We do not particularly confine ourselves to any particular materials to be employed
in the manufacture of our said invention, or the number of pulleys and other herein-
before mentioned mechanism.
Dated this 5th day of March 1800
J. P. BAYLY,
18, Fulham Place, Paddington, W., Agent for the Applicants.
COMPLETE SPECIFICATION.
An Improved Apparatus applicable for the Raising or Lowering
Window-sashes or the like.
We, JAMES WILLIAM THOMAS, Music Dealer, of 63 Fleet Street, and THOMAS
STABB, Builder, of 7 Springfield Terrace, both of Torquay, in the County of Devon-
shire, 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 :-
Our invention relates to an apparatus applicable for the raising or lowering window
sashes or the like, and consists of a mechanical contrivance boxed in at the top of the
window head and connected by sash lines to the top and bottom window sashes which
TPS71

page_text: the aforesaid apparatus will permit either of the sashes to be placed in any desirable
position.
This invention is constructed with a loose or fixed head plate, and to this plate we
place transverse axles or spindles supported by bearers. On two of the axles we place
two loose drums, and to each drum are provided with several divisions, and a spiral
screw formed from or about its largest diameter and tapering towards the axle or
spindle on which the drum revolves.
To each drum we connect (working on a separate axle,) a helical or any other
suitable spring with a flanged pulley or drum for the purpose of winding several coils
of chain round the pulley or drum, and also around the spiral screw division of each
drum; each spring is set so that it will directly either sash lifted revolve the drum,
and by that means wind the sash line on each side.
On the sash being closed the sash lines run off the drum which causes the drum to
revolve and to wind the chain off the spiral screw on to the spring drum or vice versa
on purpose to reset the spring when repeating the operation of lifting or lowering the
sash. The sash lines are fixed to the top of each sash and run over small pulleys at
the top of each end of the head plate.
And in order that our invention may be thoroughly understood, we now proceed to
describe the accompanying drawings thereof, reference being had to letters and figures
marked thereon.
Figure 1 represents the front elevation of the mechanism.
Figure 2 is a plan of Figure 1, fitted to the head plate h. The apparatus in this
figure describes the exact position of the various parts when both of the sashes are
closed. Each figure is broken off for want of space.
We preferably adopt constructing a loose revolving drum d with three flanges and
a spiral screw e on the outside of the outer flange, running on the spindle i which is
attached to bearers c, c. To the spiral screw e we attach a chain g working over the
drum with an helical spring placed in the interior and fixed to the spindle or bar i.
The drum d is provided with two divisions in order to connect the same by the lines a¹,
and b, to the top sash, after passing over pulleys, these said lines being wound around
the two divisions of the drum when the sash is up as in Fig. 2, but unwound when
the sash is down. When the top sash is pulled down the drum d revolves and thereby
winds the chain g from off the drum f onto the spiral screw e in order to wind up the
helical spring and also to give a grip to the drum d to permit the top sash to be
placed in any desirable position. The same kind of apparatus is provided for the
bottom sash and connected by the sash lines a, a, to the drum d', this said drum is
shown in Fig. 2, with the chain g wound up the spiral screw e off the drum f¹, this
being the position of the various parts when the helical spring is wound up inside the
drum f. The dotted lines show the position of the chain g when the bottom sash is
up to its full extent. If preferable we may adopt the use of two or more spiral
springs or spring drums and connect them to each other, and thence to either of the
drums d, or d; or we may run the chains direct off each spring drum unto the
drums d, and d¹. The sash lines may be of any suitable material and run over
pulleys placed in any position for the due performance of the sash moving in an
upward or downward direction.
It will be understood that we do not particularly confine ourselves to any materials
to be employed in the manufacture of our said invention, or the shapes and proportions
of the various parts, which may be varied in many ways within the scope of our
invention.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
1. The combination of the apparatus for the raising or lowering window sashes or
the like and the mechanical contrivance boxed in at the top of the window head and
connected by sash lines to the top and bottom window sashes, and to permit either of

page_text: the sashes to be placed in any desirable position by the mechanism, substantially as
herein described and according to the accompanying drawings.
2. The combination of the loose drums d, and d', and the spiral screws e, e,
revolving on or fixed to spindles i working on or supported by bearers c, c, and the
chains g, g, and the drums and f¹, containing helical springs and the lines a, a, a¹,
and b, substantially as herein described and according to the accompanying drawings.
3. The combination of the mechanism to be constructed of any shape, or of any
materials, and with coil, helical or any suitable springs, or the proportions of the
various parts may be varied, substantially as herein described and for the purpose set
forth.
Dated this 4th day of Darambon 1800
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicants.