Improvements in Apparatus for Opening, Olosing, and Fastening Windows, Sliding Doors, and the like.
Year: 1896

page_text: Date of Application, 19th Aug., 1896-Accepted, 31st Oct., 1896
COMPLETE SPECIFICATION.
Improvements in Apparatus for Opening, Olosing, and Fastening
Windows, Sliding Doors, and the like.
I, JAMES COX THOMSON, of Newington, Dunedin, New Zealand, Merchant, 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:
This invention rolates to apparatus for readily raising or lowering window sashes,
sliding doors and the like which are heavy or difficult of access, und has for its
object to provide an apparatus which shall be simple and cheap in construction,
and easy to operate, and by which additional leverage or purchase may be
obtained.
For raising the sash I employ pulleys which are connected to the top of the
sash; and to the window frame I attach another pulley. A cord having one end
fixed to the upper part of the frame, is passed beneath the two pulleys on the sash,
and is returned over the pulley attached to the upper part of the window frame, and
is then prolonged to be within easy reach of the operator.
For lowering the sash I attach two other pulloys to the top of the sash. A cord
baving one end fixed to the side of the window frame at a point sufficiently low
down to permit the sash to he lowered to the full extent, passes over the last
mentioned pulleys and is also prolonged to be within easy reach of the operator.
Where an increase of power is desired I apply a pulley upon the side of the window
frame, and instead of fixing the end of the cord thereto, I continue the cord around
such pulley and attach the end of the said cord to the top of the sash.
In order that my said invention may bo clearly understood and readily carried
into effect I will now proceed to describe the same with reference to the accompanying
drawings which shew my apparatns applied to the upper sash of an ordinary
window. The invention may in a similar manner be applied to sliding doors and
the like.
Figure 1 is a front elevation of a window and sashes with my apparatus attached
thereto.
Figure 2 is a similar view with another arrangement of my apparatus.
Figure 8 is a front view and
Figure 4 an edge view showing a rocking frame carrying a pair of pulleys and
whose purpose will be hereinafter described.
a and bare the pulleys which are attached to the top of the upper sash, in the
positions indicated, and c is the pulley which is attached to the upper part of the
window frame. d is the window sash raising cord whose end is fixed to the upper
part of the window frame. This cord passes beneath the pulleys ba and over
the guide pulloy c, and is of such a length as to hang within easy reach of the
operator.
Beneath the pulleys ab I arrange the pulleys and g over which the lowering
cord passes. One end of this cord may be fixed to the side of the window frame
at 1, or where an increase of power is required the said cord may pass around
the pulley attached to the side of the window frame, and its end be fixed to the
window sash at . The free end of the said cord hangs in proximity to the
other cord d so as to be likewise within easy reach of the operator. Instead of
employing two separate cords as shewn in the drawings I may employ a single
cord.

page_text: My apparatus operates as follows:-To lower the sash, the cord his pulled in a
downward direction whereby it is caused to run around the pulleys fg and and exert
a downward thrust on the sash. At the same time the cord d will be raised by the
action of the pulleys a and b so that when it is desired to raise the sash, the cord i will
be in the proper position for so doing, and will only require to be pulled to cause it to
run around the pulloys c a and b, and exert an upward thrust on the sash.
If desired, the pulleys and g may be attached to lovers f¹ and g' as shown at
Figure 2, tho said lovers being fulcrumed at the top of the sash at f and g. When
the cord is pulled these lovors operato against the window frame and start the
lowering of the sash; the operation of lowering is then continued as before described.
Or one lever may be employed instead of two, in which case the said lever is situated
at the centre of the top of the sash and the pulleys ƒ and g are attached to the sash as
shewn in Figure 1, while the end of cord his connected to the free end of the said
lover.
When additional power is required it may be obtained by increasing the number of
pulleys after the manner of blocks and tackle.
The aforesaid pulley į may be placed on the inside of the window frame so as to
be less conspicuous, and the cords d and may he hidden from view by passing them
through tubing provided for the purpose. These and similar details of my apparatus
may be modified in various obvious ways without departing from the nature of the
invention.
In some cases I mount tho said pulleys a fand bg in pivoted or rocking frames
one of which is shown in Figures 3 and 4. is the frame which is pivoted at A¹
to a plate the said plate being provided with screw holes for enabling it and
the frame to be connected to tho sash in such a position that the pulleys af occupy
substantially the same position as that indicated in Figures 1 and 2. The said plate
has near its lower end two stops or projections between which the lower ond
of the frame is free to oscillate. is a spiral spring which normally acts to keep
the frame pressed towards the stop . The said frame is formed with a lateral
projection or nose which protrudes in the path of an inclined projection on the
window frame, the said nose being so shaped that as the sash ascends, the pivoted
franie rocks about its pivot as shewn by the dotted lines in Figure 3, and allows the
said nose to pass the projection on the window frame. The nose thus gets above the
said projection and prevents the sash from being lowored until the said pivoted frame
is shifted out of engagement with the inclined projection by a person inside the room
pulling on the cord in the uct of lowering the sash.
Having now particularly described and ascertained the nature of ny said inven-
tion and in what manner the same is to be performed, I declare that what 1
claim is
1. Apparatus for opening and closing windows sliding doors and the like, consisting
of cords and pulleys arranged and operating substantially as hereinboefore described
with reference to the accompanying drawings.
2. A lever or levers arranged to operato in conjunction with my apparatus
substantially as described with reference to Figure 2 of the drawings and for the
purposes set forth.
3. The combination with the aforesaid window opening and closing apparatus of
a rooking frame carrying the pulleys a and for band g substantially as described
with reference to Figures 3 and 4 of the drawings and for the purpose specified.
Dated this 19th day of August 1806
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.