IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR ACTUATING AND OPENING WINDOW SASHES."
Year: 1881

page_text: LETTERS PATENT to William Leggott, of Bradford, in the County of York, for
an Invention of "IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR
ACTUATING AND OPENING WINDOW SASHES."
PROVISIONAL SPECIFICATION left by the said William Leggott at the
Office of the Commissioners of Patents on the 30th August 1881.
WILLIAM LEGGOTT, of Bradford, in the County of York. "IMPROVEMENTS IN
THE METHOD OF AND APPARATUS FOR ACTUATING AND OPENING WINDOW
SASHES."
This Invention has for its object the arrangement of window sashes in such a
manner that they can be moved up and down in the slides, formed in what is usually
called the pulley stiles, without the use of cords and weights, and to so arrange
the elevating mechanisin that the outside of both the top and bottom sash can be
turned into the inside of the room for the purpose of cleaning, and when turned,
may be raised to such an elevation that the sash is almost vertical.
My object is accomplished by securing a toothed rack at each side of both top
and bottom sash, which slide in guides secured to the pulley stile; at the bottom
end of each rack is formed a socket or journal for the reception of the sash lifting
bar secured to each side of the bottom stile of the sash.
By actuating gearing in connection with the before mentioned racks, the sashes
may be raised. or lowered as required, and in order to turn, say, the outside of the
bottom sash into the inside of the room, I release the top part of the sash from the
racks; the sash is then free, resting upon the lifting bars, can be turned into the
room, and if desired by actuating the gearing, the racks will raise the sash until
the same is nearly in a vertical position, the bottom of the sash now being at the
top suspended by the lifting bars in the racks, and the top of the sash resting on
the bottom of window frame. On replacing the bottom sash and raising it to
the top of the window frame the top sash can be lowered, and when clear of the
first named sash can be turned into the room as before described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Leggott in the Great Seal Patent Office on the 27th February
1882.
WILLIAM LEGGOTT, of Bradford, in the County of York. "IMPROVEMENTS IN
APPARATUS FOR ACTUATING AND OPENING WINDOW
THE METHOD OF AND
SASHES."
This Invention has for its object the arrangement of window sashes in such a
manner that they can be moved up and down in slides, formed in what are usually
called the pulley stiles, without the use of cords and balance weights, and to so
arrange the elevating mechanism that the outside of both the top and bottom sashes
can be turned towards the inside of the room for cleaning or for any other purpose,
and when so turned that the sash may be raised to such an elevation that it is
almo-t vertical.
The Invention consists in placing at each side of both the top and bottom sashes a
toothed rack which slides in a groove formed in the pulley stile, and near the
bottom of each rack is a hole forming a journal for the reception of the sash lifting
bars, which are secured to each side of the bottom rail of the sashes. The sashies
are raised and lowered by mechanism in connection with the racks; the bottom
sash is retained in position by sliding bolts secured at the top of the bottom sash,
the ends of such bolts going into holes formed near the top of the racks in
connection with the said sash. Upon withdrawing the bolts the bottom sash is
free and will turn on the lifting bars, the outside of the sash turning towards the
room. When the bottom sash is fixed in the frame, on raising the same to the top
and lowering the top sash to the bottom the latter is free, and the outside of the
sash can be turned towards the inside of the room.
In the accompanying Drawings, Figure 1 is an elevation of a window frame
fitted with my apparatus as arranged when the top and bottom sashes are actuated
seperately; Figure 2 is a vertical section through same, shewing the bottom sash
lowered to a horizontal position; Figure 3 is a cross section of window frame
shewing the rack grooves; Figure 4 is a detailed side elevation of one side of a
portion of a window frame, part of the framework of the apparatus being cut
away Figure 5 is a view of the apparatus looking in the direction of the arrow;
and Figure 6 is a sectional plan.
The gearing for actuating the top and bottom sashes is mounted in box bracket A,
which is morticed through and secured to the pulley stile, one at each side of the
window frame, and the gearing in connection with the top and bottom sashes at
each side of the window frame is connected together by the shafts B and C; the
shaft B is in connection with the bottom sash B', and the shaft C in connection
with the top sash C¹. On each of these shafts, and near to each end of same,
within the box bracket A I secure a worm D, each of which gears into a worm
wheel E mounted on short transverse shafts carried by journals formed in the before
mentioned box bracket. To each of these transverse shafts are secured spur
pinions F and F1, the former gearing into racks G placed at each side of the bottom
sash B', which are connected thereto by the lifting bars H secured to the underside
of the bottom rail of the said sash, the ends of the lifting bars passing into holes
formed near the end, of each rack G, which slides in a groove formed in each
pulley stile M.
Motion to the gearing may be transmitted in a variety of ways; in the Drawings
I have shewn a bevel wheel J secured on the end of each shaft B and C, and
gearing into the same is another wheel J', the spindle of which is squared at the
end for the reception of a lever or key, so that by turning the same the respective
sashes may be raised or lowered.
When it is desired to turn the outside of the bottom sash B' towards the inside
of the room for cleaning or any other purpose, the sliding bolts K, which are of
ordinary construction and fixed at each side of the top rail of sash, are withdrawn

page_text: from the holes formed near the tops of the racks G; the bottom sash for the time
being is then free and the top of same can be lowered, the sash resting and turning
on the lifting bars or axles H in the holes or journals near the bottom of the
racks G, and on the racks being raised by the before mentioned mechanism the sash
can be elevated until it is nearly in a vertical position, the outside of the saslı
being towards the inside of the room.
If the outside of the top sash C¹ is required to be turned towards the inside of
the room, the bottom sash B' is replaced in the window frame secured to the racks G
by the before mentioned sliding bolts K and raised to the top of the frame; the top
sash C is then lowered by actuating the gearing in connection with the shaft C
and spur pinion F¹, and when clear of the bottom sash it can be lowered towards
the inside, the sash turning on the lifting bars or axles in racks G₁ in the manner
as before described.
In the top sash C¹ no sliding bolts are required as in the bottom sash B¹, because
the parting beads L keep the top sash in position. These parting beads are, in
carrying out my Invention, only made and secured to the upper half of the window
frame above the shafts B and C, the portion below requiring to be clear in order
that the sashes may turn on their respective lifting bars or axles.
My apparatus is also applicable for actuating both the top and bottom sashes at
the same time; this arrangement is represented by Figures 7 and 8, the former
being a front elevation of the apparatus, and the latter a side view of the same
detached from the window frame.
The brackets N and N¹ are secured to what are usually termed the pulley stiles
of the window frame, and mounted in journals formed in the said brackets are spur
pinions P and P', which are connected together by shaft S passing through the
same. To the spur pinion P' is secured worm wheel R which gears into worm R'
that is secured to vertical shaft T, which is mounted in journals forming part
of bracket N1; the bottom part of the shaft T is carried by bracket U which is
secured to the opposite side of pulley stile, and on to the said shaft is attached a
bevel wheel V which gears into another bevel wheel V', which is attached to short
shaft W carried by projecting arm U₁ of bracket U. The end of short shaft W is
made square, and is enclosed within a recessed casting Y morticed into the
architrave of window casing, and on placing a key on the square of shaft and
turning same, the bevel wheels, worm, and worm wheel, and spur pinions P and P
will revolve, the latter being of such a diameter that they gear into the teeth of
the racks secured to the top and bottom sashes, so that when the spur pinions P
and P are actuated in the manner described the top and bottom sashes are
respectively raised and lowered according to the direction in which the shaft is
turned.
What I claim as my Invention is,-
The combination by which the outside of window sashes can be turned towards
the inside of the room, and when so turned by which the racks at each side of the
sash can be raised, elevating the sash until the same is nearly vertical, substantially
as described and as illustrated by the accompanying Drawings.
In witness whereof, I, the said William Leggott, have hereunto set my hand
and seal, this Twenty-fourth day of February, in the year of our Lord One
thousand eight hundred and eighty two
Witness,
JOHN WAUGH,
Engineering & Patent Offices,
Bradford, Yorks.
WILLIAM LEGGOTT. (L.S.)