An Improved Window Sash Fastener.
Year: 1892

page_text: Date of Application, 15th June, 1892
Complete Specification Left, 15th Mar., 1893-Accepted, 15th Apr.,
1893
PROVISIONAL SPECIFICATION.
An Improved Window Sash Fastener.
I, FRANCIS BENNETT SHUFFREY, of Stafford Street, Walsall, Staffordshire,
Merchant and Factor, do hereby declare the nature of this invention to be as
follows:-
This invention consists of the hereindescribed improved window sash fastener
which is constructed and applied as follows:-
"
I provide a metal plate which is fixed by screws or otherwise to the bottom rail
of the top sash. To the front of this plate is hinged a lever arm which can either
be turned down on to the top rail of the bottom sash to secure the sashes closed as
hereinafter described or the said lever arm can be turned up and back upon the
said plate to allow the sashes to pass and re-pass each other. This lever arm is of
peculiar construction. It is made of two parts which I will call the "inner and
the "outer" part and which are hinged together at somewhere about the cross
centre of the arm, this hinge being parallel with the said hinge joint of the inner
part of the arm to the said plate. The plate and the two parts of the arm can
very conveniently be, and by preference are, made from sheet metal.
extremity of the outer part of the arm is curved downwardly and backwardly into
a hooked form and between this curved end and the joint a cross rib is formed on
the underside of the arm for the purpose hereinafter described.
The
To fasten the sashes the said arm is turned down over the top rail of the bottom
sash and the said outer curved end of the arm is pressed down so as to snap over
and engage with a rounded bar or projection which I fix to the top rail of the
bottom sash for that purpose. This rounded bar or projection may be in the form
of a staple which is driven into the sash rail, or the said bar or projection may be
made by bending the edge of a plate which is fixed to the front or to the top of the
sash only or it may be cast or otherwise formed. The said lever arm when snapped
over and engaged with the bar or projection as above described draws the two
sashes together and if by any chance a knife or other instrument is inserted between
the sashes from the outside and pressed against the lever to raise it, then only the
"inner" part of the lever will be raised the extremity of the outer part remaining
hooked on to the said bar or projection thus drawing the two sashes closer together
and gripping the knife or other instrument between them.
To unfasten the sashes the hooked end of the lever arm is disconnected from the
said bar or projection which can readily be done by pressing downwardly the hinge
connecting the "inner" and "outer" parts of the arm together which has the effect
of making the outer part of the arm turn upon its said cross rib as on a fulcrum thus
raising and disconnecting the hooked end of the lever arm from the bar or
projection when the lever arm can be turned up and back upon the said plate to
allow of the sashes passing and repassing each other. The outer end of the arm
can be formed as a knob or projecting part to facilitate unfastening and raising the
lever arm.
Dated this 9th day of June 1909
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
An Improved Window Sash Fastener.
I, FRANCIS BENNETT SHUFFREY, of Stafford Street, Walsall, Staffordshire,
Merchant and Factor, 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 consists of the hereindescribed improved window sash fastener
which is constructed and applied as I will describe by referring to the accompanying
drawing on which
Fig. 1 represents in side elevation a window sash fastener constructed according
to my invention applied to a window sash the top rail of the bottom sash and the
bottom rail of the top sash being also shewn in cross section; Fig. 2 is a plan of
the same; in Figs. 1 and 2 the sash fastener is shewn in the position to secure the
sashes closed together;
Fig. 3 shews the sash fastener unfastened ready for turning up as shewn in Fig. 4
to open the sashes; and
Fig. 5 shews separately the catch plate of the fastener which is fixed to the top
rail of the bottom sash.
I provide a metal plate A which is fixed by screws a or otherwise to the bottom
rail B of the top sash. To the front of this plate A is hinged a lever arm
(marked CC2) which can either be turned down on to the top rail D of the bottom
sash Figs. 1 and 2 to secure the sashes closed as hereinafter described or the lever
arm C¹ C² can be turned up and back upon the plate A. Fig. 4 to allow the sashes
to pass and re-pass each other. This lever arm C¹ C2 is of peculiar construction.
It is made of two parts which I will call the "inner" part C' and the "outer"
part C and which are hinged together at e somewhere about the cross centre of
the arm, this hinge e being parallel with the hinge joint f of the inner part C¹ of
the arm to the plate A. The plate A and the two parts C1 C2 of the arm can very
conveniently be and by preference are made from sheet metal as shewn. The
extremity g of the outer part 2 of the arm is curved downwardly and backwardly
into a hooked form as shewn and between this curved end g and the joint e a cross
rib is formed on the underside of the arm for the purpose hereinafter described.
I fix to the top rail D of the bottom sash a rounded bar or projection which is
by preference made by bending into a curved form the edge of a plate I which
is shewn separately by Fig. 5 and is fixed to the top of the sash so as to project at
the front thereof as shewn.
To fasten the sashes the arm C' C² is turned down over the top rail D of the
bottom sash and the outer curved end g of the arm C1 C2 is pressed down so as to
snap over and engage with the rounded bar or projection i as shewn in Figs. 1 and 2
thus drawing the two sashes together so that if by any chance a knife or other
instrument be inserted between the sashes from the outside and pressed against the
lever C' C² to raise it then only the inner part C¹ of the lever will be raised, the
extremity g of the outer part C³ remaining hooked on to the said bar or projection i
thus drawing the two sashes closer together and gripping the knife or other
instrument between them.
To unfasten the sashes the hooked end g of the lever arm C¹ C³ is disconnected
from the said bar or projection which can readily be done by pressing downwardly
the hinge e connecting the "inner" part C' and the "
"
outer part C of the arm
together which has the effect of making the outer part C2 of the arm turn upon its
cross rib has on a fulcrum (see Fig. 3) thus raising and disconnecting the hooked
end g of the lever arm from the bar or projection i when the lever arm can be
turned up and back upon the plate A as shewn in Fig. 4 to allow of the sashes
passing and repassing each other. The extreme outer end of the arm C¹ C' can

page_text: if desired be formed as a knob or projecting part ; see the dotted lines in Fig. 4
to facilitate unfastening and raising the lever arm.
k is a spring tongue which may be formed with the plate I to bear against the
underside of the part C¹ of the lever arm and maintain it in the raised inclined
position shewn by Fig. 1 or this spring tongue may be dispensed with.
In conclusion I wish it to be understood that I do not limit myself to the precise
details herein described and shewn upon my drawings as the same may be varied
without departing from the nature of my invention. For instance the rounded
projecting part i instead of forming a portion of a plate may form the front of a
staple which is driven into the sash as shewn in Fig. 6; also the outer portion
of the lever arm may, as shewn by the dotted lines in Fig. 1, be made without the
cross rib h.
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 herein described improved window sash fastener consisting of the
combination of a lever arm hinged to a plate adapted for fixing to the bottom rail
of the top sash, and a fixed rounded projecting part such as i adapted for fixing
to the top rail of the bottom sash, the said lever arm being hooked at its outer end
and made in two parts hinged together and so arranged that when the lever arm is
turned down across the sashes the said arm can be fastened by pressing its hooked
end so as to snap over the fixed projecting parti and so that by pressing down-
wardly the cross hinge portion of the arm the hooked end will be disconnected from
the said projecting part, the said fastening being made either with or without a
spring such as k to press upwardly the inner portion of the lever arm all
substantially as herein before set forth.
2. In a window sash fastener of the kind denoted under claim one, making the
outer portion of the lever arm with a cross rib such as h underneath to act as a
fulcrum when the hinged portion of the lever arm is pressed in opening the fastening
as hereinbefore set forth.
3. The combination of parts constituting the improved window sash fastener
arranged and operating as herein before described and illustrated by the accom-
panying drawing.
Dated this 14th day of March 1893.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.