IMPROVE- MENTS IN WINDOW FASTENINGS
Year: 1883

page_text: LETTERS PATENT to Eliza Mary Loe of Garfield House, Christchurch
Willesden Lane in the County of Middlesex for an Invention of "IMPROVE-
MENTS IN WINDOW FASTENINGS" communicated to her from abroad by William
Clark Loe of Paris in the Republic of France
:
PROVISIONAL SPECIFICATION left by the said Eliza Mary Loe at the Office
of the Commissioners of Patents on the 3rd July 1883.
ELIZA MARY LOE of Garfield House Christchurch, Willesden Lane in the County
of Middlesex "IMPROVEMENTS IN WINDOW FASTENINGS" [communicated to her
from abroad by William Clark Loe of Paris in the Republic of France]. .
This invention relates to the construction of window fastenings of a cheap and
simple character, so arranged as to draw together and hold securely without shake
the two sashes of a window, without permitting the fastening to be unfastened
by a blade inserted from without through the division of the sashes.
For this purpose there is fixed on the lower rail of the upper window sash a
vertical plate presenting through it a hole of oval or rectangular shape which can
receive the head of a bolt when inserted in one attitude, but not permit the head
to be withdrawn when the bolt is turned partly round. On the upper rail of
the lower window sash is fixed a casing for a spring bolt having a T head or its
equivalent which can be thrust into the hole above mentioned and turned partly
round. In the bolt case is fixed a stud projecting into a slot cut in the body of
the bolt, this slot being for part of its length straight, and terminating with a
helical curvature. In thrusting in the bolt, the straight part of the slot travelling
along the stud guides the bolt straight into the hole, and after it is inserted in
the hole, a partial turning round of the bolt engages its head behind the edges
of the hole, and at the same time the stud acting in the helical part of the slot
gives the bolt a screw like action which draws the two window sashes forcibly
together, preventing shake. Otherwise, the edge of the hole in the vertical plate
may be helically sloped so that the bolt head when it is turned acts as on a screw
thread, the slot in the bolt in this case being in its front part parallel and in its
hinder part perpendicular to the axis.
:

page_text: 1
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Eliza Mary Loe in the Great Seal Patent Office on the
28th December 1883.
"
ELIZA MARY LOE of Garfield House, Christchurch Willesden Lane in the County
of Middlesex "IMPROVEMENTS IN WINDOW FASTENINGS A communication to a
me from Abroad by William Clark Loe of Paris in the Republic of France
.
This invention relates to the construction of window fastenings of a cheap and
simple character, so arranged as to draw together and hold securely without shake
the two sashes of a window, without permitting the fastening to be unfastened by
a blade inserted from without through the division of the sashes.
For this purpose, there is fixed on the lower rail of the upper window sash a
vertical plate presenting through it a hole of oval or rectangular shape which can
receive the head of a bolt when inserted in one attitude, but not permit the head
to be withdrawn when the bolt is turned partly round. On the upper rail of the
lower window sash is fixed a casing for a spring, bolt having a T'head or its
equivalent which can be thrust into the hole above mentioned and turned partly
round. In the bolt case is fixed a stud projecting into a slot cut in the body of the
bolt, this slot being for part of its length straight and terminating with a helical
curvature. In thrusting in the bolt, the straight part of, the slot travelling along
the stud guides the bolt straight into the hole, and after it is inserted in the
hole, a partial turning round of the bolt engages its head behind the edges
of the hole, and, at the same time, the stud acting in the helical part of the slot
gives the bolt a screw-like action which draws the two window sashes forcibly
together, preventing shake. Otherwise, the edge of the hole in the vertical plate
may be helically sloped, so that the-bolt head, when it is turned, acts as on a screw
thread, the slot in the bolt in this case being in its front part parallel and its
binder part perpendicular to the.axis.
DESCRIPTION OF THE DRAWINGS
.
Fig. 1 is a vertical section of parts of the two sashes, of a window with a
fastening according to this invention, in its, retracted position; Fig. 2 shews the bolt
of the fastening shot but not turned, and Fig. 3 shews the bolt shot. and turned so
as to draw the sashes forcibly together and fasten them. Fig. 4.is a plan,shewing
the bolt as in Fig. 2. A and B are the meeting rails of the two sashes. On the
sash A is fixed a plate C having a hole through it for passage of the bolt head.
This plate may be of the form shewn in section in Figs 1, 2 and 3 and in elevation at
Fig. 7b bent so that it constitutes a hook for pulling the sash inwards and upwards;
or it may be as shewn in Figs 7 and 8 having its upper part shaped as a ring for the
, same purpose, or it may terminate in a knob as shewn in Figs 7 and 8ª. On the
rail B is fixed the casing D which contains the spring bolt, E shewn in plan at
Fig. 5. This bolt has a head e of T or equivalent form such as in one attitude can
enter, the hole of C but when turned partly round cannot be withdrawn through
the hole. The bolt E is furnished with a knob. F by which it can be slid to, or fro
and turned partly round. In the bolt is cut a chase, or groove G which is
. straight for part of its length, but at its end turns to one side in helical form as
shewn in Fig. 5, or it may be to both sides as shewn in Figs 5 and 5b. When the
sash rails A and B are brought together, the bolt E is pushed in opposition to its
spring, so that its head e passes through the hole in C, the straight part of the
groove G guiding it in a straight course. The bolt E is then turned partly round

page_text: as permitted by either lateral branch of the groove G, and by the movement thus
given to the bolt, its head e, acting on the outer edges of the hole of C, draws the
two sashes firmly together, and fastens them. In order to allow for shrinkage or
other alteration of the sashes, the bolt case D may be fixed adjustably as shewn in
Fig. 9, it being fitted to slide on a base provided with an adjusting screw H.
Having thus described the nature of this invention and in what manner the
same is to be performed, as communicated to me by my foreign correspondent,
I claim -
The construction of a window fastening, substantially as herein described and
illustrated by the accompanying Drawings.
In Witness whereof I the said Eliza Mary Loe have hereunto set my hand and
seal this Twenty Eighth day of December in the year of our Lord One thousand
eight hundred and eighty-three
ELIZA. MARY. LUE
(L.S.)