Improvements in Means for Raising and Lowering Window Sashes and in Fastenings for the same.
Year: 1892

page_text: Date of Application, 10th May, 1892-Accepted, 6th Aug., 1892
COMPLETE SPECIFICATION.
Improvements in Means for Raising and Lowering Window Sashes
and in Fastenings for the same.
I, FRANCIS JOSEPH JAMES GIBBONS, of St. Johns Works, Church Lane,
Wolverhampton, in the County of Stafford, Lock Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to improved devices for raising, lowering and fastening
window sashes, and its objects are to provide for
(a) raising or lowering a top sash of any size without using a centre line, a
long arm, or a pull-down handle:
(b) raising the bottom sash without unfastening the top one:
(c) lowering the top sash without unfastening the bottom one :
(d) either sash being automatically secured by the act of closing only:
(e) the various parts of the raising, lowering and fastening devices being beyond.
the reach of any burglar, and
(f) the lower sash being raised a short distance so as to ventilate between the
sashes, and automatically secured in that position from the inside.
In order that my invention and the best means of carrying it into practical effect
may be thoroughly understood, I will describe it and them in detail, referring in so
doing to the accompanying drawings which are to be taken as part of this Specifi-
cation and read therewith.
Fig. 1 is a front elevation of a sash window fitted with the present invention.
Fig. 2 is an enlarged vertical section through the head of the window and the
top rail of the sash."
Fig. 3 is a section on the same scale as Fig. 2. It is taken on the line 3-3 of
Fig. 1, but shews the bottom sash raised a short distance for ventilation and secured
from the inside.
Fig. 4 is a vertical section shewing both sashes automatically secured from the
inside and the bottom one raised a short distance for ventilation.
a is the window frame; b, the top, and c, the bottom sash.
The mechanism for raising the top sash is as follows. a', a' are pulleys standing
in the vertical plane and at right angles with the plane of the window. They are
fixed in the head a above the stiles 6', b¹ of the top sash. 62, 63 are the raising
cords. They pass round the pulleys a'. One end of one of them is made fast to
the top rail, preferably by passing it through a lateral extension of the plate of
the fastener next described and knotting it there, and that of the other of them
to a convenient fixed point, e.g., an eye on the sash, anywhere under the respective
pulley a. The other ends hang loose on the inside of the window and are fitted
with suitable grips 6. Each cord is long enough to keep its grip within reach when
the top sash is wide open. The pendent portion of the left hand cord is drawn
a little to one side to shew the other one behind it.
-
The mechanism for fastening, unfastening and opening the said sash may be
fixed on either side thereof, and is as follows. is the fastener plate. It is pre-
ferably of the shape of an inverted Land is fixed flush with both the top and inside
faces of the top rail and the inside face of either side rail. 6 is its bolt. It is
pivotted upon a transverse pin 67. 68 is its tooth. The normal position of the bolt
is parallel with the direction in which the sash moves, i.e., vertical, and the bolt
itself is long enough to carry its tooth high enough above the top rail 6 for it to
enter a cavity a' in the head of the window frame, passing in so doing through a

page_text: slot a' in the plate a* and to engage behind the staple a³. This latter is preferably
an enlargement upon the inside face of the front plate a of the frame of the
pulley a The plate in question has two slots a formed in it for the cord b
to work through. 69 is a forward projection upon the bolt above the pivot b',
and 60 is a cord pendent from it. is a second one pendent from the before
mentioned fixed point on the opposite rail. Both cords are long enough to
keep their grips within reach when the sash is fastened. 12 is an internal
spring adapted to return the bolt to its vertical or normal position.
To raise the top sash, the grips of both cords are pulled down as far as
necessary. To fasten the said sash, the grips are pulled until the nose 68 of
the bolt is engaged by the spring above the staple a. To close the said
sash, proceed as for fastening it, the act of fastening being included within, and
automatically effected by, that of closing.
into
To unfasten the top sash, the cord 610 is pulled, thereby rocking the bolt
the position indicated by the dotted lines in Fig. 2. The sash is opened by pulling
both cords 10, 11.
The mechanism for fastening, unfastening and raising the bottom sash is pre-
ferably duplicated. Each half is fixed equidistantly from the centre of the
bottom rail. A description of one is a description of both.
c is an L-shaped plate fixed flush with both the inside and under faces of the
.bottom rail c¹. is a bolt, and c³, a guide in which it can slide in a direction at
right angles with that in which the sash moves. The bolt is long enough to
protrude its nose c', under the influence of the spring e, in front of the plate e in
the direction of the window frame. e is the staple. It is fixed to the frame. c is
the lift proper (hereinafter called a lever lift). It is a lever having its fulcrum on
a horizontal pin c carried by rearward extensions of the front part of the plate c.
is a lever having its fulcrum on a similarly supported pin c¹0. The top and
bottom extremities of this lever engage, respectively, the inside end of the lever-
lift cand a stud c" fast on the top of the bolt e².
To fasten the bottom sash, it is pushed down as far as it will go. As the bolt-
noses e pass bevelled edges of the staples c, they are pushed in, but only to be
protruded by the respective springs as soon as they have passed the staples, and to
be pushed through the bottom holes therein into the cavities c.
To close the said sash, proceed as for fastening it, the act of fastening being
included within and automatically effected by that of closing.
To unfasten and raise the said sash, the lifts are used as if they were ordinary
lifts. This will rock them into the position indicated by the dotted lines in Fig. 3,
thereby unlocking the bolts and freeing the sash, the lifts being kept in the said
position until the bolts have passed the cavities next mentioned.
care additional holes in the staples c and cavities in the frame. Their
function is to provide in combination with the bolts c, for the lower sash to be
raised for a short distance for ventilating the room and held automatically secured
in that position. The sash, can, it is evident be either lowered until the bolts
automatically engage in the holes and cavities c¹ or the sash can be raised for the
proper distance, the lifts being let go when the bolts are opposite the said
cavities.
In the case of narrow and light windows, a single central fastener only may be
used with each sash.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is: :―
1. The combination of side rail or top rail of top sash, a pivotted and spring-
controlled bolt adapted by its bevelled nose to pass through a staple fixed above it
in the frame, a staple in the frame above the said bolt suitably slotted to receive it
and to allow of its being withdrawn from it, and a pull or equivalent device for
disengaging the bolt from its staple and opening the top sash.

page_text: 2. The combination of side rail or top rail of top sash, a pivotted and spring-
controlled bolt adapted by its bevelled nose to pass through a staple fixed above
it in the frame, a staple in the frame above the said bolt suitably slotted to
receive it and to allow of its being withdrawn from it, a pulley and cord for
raising and fastening the sash and a pull or equivalent device for disengaging
the bolt from its staple and opening the top sash.
3. The combination of bottom sash lever-lift or sash lift on the end of a lever, a
spring-protruded bolt, a lever engaged by and engaging both that end of the lever
first mentioned which is opposite to the sash lift and the said bolt and a staple on
the window frame adapted to receive the bolt when the sash is closed.
4. The combination of side rail or top rail of top sash, a pivotted and spring-
controlled bolt adapted by its bevelled nose to pass through a staple fixed above it
in the frame, a staple in the frame above the said bolt suitably slotted to receive
it and to allow of its being withdrawn from it, a pulley and cord for raising and
fastening the sash and a pull or equivalent device for disengaging the bolt from
its staple and opening the top sash, bottom sash, lever-lift or sash lift on the
end of a lever, a spring-protruded bolt, a lever engaged by and engaging both
that end of the lever first mentioned which is opposite to the sash lift and the
said bolt, and a staple on the window frame adapted to receive the bolt when the
sash is closed.
5. The combination of side rail or top rail of top sash, a pivotted and spring-
controlled bolt adapted by its bevelled nose to pass through a staple fixed above it
in the frame, a staple in the frame above the said bolt suitably slotted to receive
it and to allow of its being withdrawn from it, a pulley and cord for raising
and fastening the sash and a pull or equivalent device for disengaging the bolt
from its staple and opening the top sash, bottom sash, lever-lift or sash lift on
the end of a lever, a spring-protruded bolt, a lever engaged by and engaging
both that end of the lever first mentioned which is opposite to the sash lift and the
said bolt, and a staple on the window frame having two holes one above the other
the upper one adapted to receive the bolt and to secure the sash standing open a
little and the lower one adapted to receive the bolt when the sash is closed for the
purpose of ventilation.
ו נ.י.
1 M. 1000
PHILLIPS & LEIGH,
No. 22, Southamptou Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.