MENT IN SASH FASTENERS
Year: 1884

page_text: ROBERT CANNING JONES trading as Jelley Son & Jones of 196 Blackfriars Road
in the County of Surrey Wholesale Ironmonger, and JOHN WILLIAM CUNNINGHAM
Manager to the above do hereby declare the nature of their invention for IMPROVE-
MENT IN SASH FASTENERS to be as follows:-
The Invention relates to improvements in Sash Fasteners for sliding Sashes,
which cannot be opened by any instrument inserted between the meeting rails
from the outside of Sashes.
To explain the improvement, We use a fastener of the ordinary construction, with
a Hook slide or shield, the arm of the Sash fastener is provided with a stub and
when pulled forward to fasten the window, the stud presses the Hook slide or
shield transversely across the meeting rails of the sash, thus preventing a knife or
other instrument from moving the arm of the Sash-fastener.

page_text: We ROBERT CANNING JONES trading as Jelley Son & Jones of 196 Blackfriars
Road in the County of Surrey Wholesale Ironmongers and JOHN WILLIAM
CUNNINGHAM Manager to the above do hereby declare the nature of our invention
for "IMPROVEMENTS IN SASH FASTENERS" and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:
This invention relates to improvements in sash fasteners for sliding sashes
whereby they cannot be unfastened by any instrument inserted between the
meeting rails or bars of the sashes from the outside of the window.
The invention consists in the use of a sash fastener of the ordinary construction
combined with a hook slide or shield the spring arm or lever of the sash fastener
being provided with a stud or projection which when pulled forward with the
spring arm or lever in the act of fastening the window forces the hook slide or
shield backwards and across the meeting edges of the rails or bars of the sashes
thus preventing a knife or other instrument from moving the spring arm or lever
of the fastener.
And in order that the said invention may be well understood we shall now
proceed more particularly to describe the same reference being made to the accom-
panying sheet of drawings, like letters of reference indicating corresponding parts in
all the figures.
Figure 1 is a plan of our improved sash fastener "unfastened "-Figure 2 a plan
thereof "fastened" and figure 3 a perspective end view of figure 2 showing how a
knife is prevented by our invention from tampering with the fastener.
Our improved sash fastener is of the usual construction except where its hook
plate a is fitted with a hook slide or shield composed of an upper horizontal plate b
which is curved on its outer edge and connected by a side web c with a bottom
horizontal plate d.-The side web c of the shield is carried vertically and capable of
sliding horizontally between the fixed lug or bracket e on the hook plate a and a
fixed barf which is parallel to the web ċ, between the top and bottom plates b. d. of
the shield and is secured to the fixed lug or bracket e by a stud or pin g which
projects from the bar f and passing through a horizontal slot formed in the side
web c of the shield is rivetted or screwed into the fixed lug or bracket e.
On the spring arii or lever h of the sash fastener is a stud or projecting piece i
which in the "unfastened" position figure 1. is nearer to the hinge or centre of the
spring arm or lever h than the outermost portion of the curved edge of the upper
plate b of the shield.
On pulling over the spring arm or lever h on its hinge or centre from the
"unfastened" position to the "fastened" position as in figure 2. the spring arm or
lever will come between and be guarded by the top and bottom plates b. d. and
its stud or projection i coming in contact with the curved edge of the top plate b
of the shield the latter will be forced back so that its side web c and bottom plate d
slide horizontally across the meeting edges x of the sash rails or bars of the window
whereby a knife or other instrument being inserted between the sash rails or bars

page_text: as seen in figure 3 will come against the side web c of the shield and consequently
be prevented from reaching and forcing back the fastener which is further pre-
vented from being tampered with at the other side of the web c by the bottom
plate & of the shield.
By forming the hinged portion of the spring arm or lever h with an eccentric
shaped projection; the shield is returned to its original position on throwing back
the spring arm or lever into the "unfastened" position figure 1.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is
The application and use to a sash fastener of a shield which is caused to slide
across the meeting edges of the rails or bars of the sashes substantially as and
for the purpose hereinbefore described and illustrated by the accompanying
drawing