An Improvement in Window Sash Fasteners and the like.
Year: 1895

page_text: Date of Application, 16th Sept., 1895
25th Lualu 1896
κυπριοι
PROVISIONAL SPECIFICATION.
An Improvement in Window Sash Fasteners and the like.
I, MARY SIBBRING, Married Woman, of No. 108, Cazneau Street, Liverpool,
do hereby declare the nature of this invention to be as follows:-
This invention relates to that class of sash fasteners in which a lever pivotted on
the upper sash is arranged to lock with a projection formed on the lower sash.
Hitherto such lever has been pivotted upon a pin which is let into its base-plate
or frame by drilling and rivetting, and it is found that such pin frequently becomes
loose or broken.
According to this invention such lever has cast or formed upon it two pins or
projections which are adapted to work in holes which are countersunk in the top
and bottom plates of a box frame; or instead of having such pins formed upon it,
the lever is formed with a hole through which passes a pin which is held in
position by the top and bottom plates of a box frame which may be cast
around it.
By pivotting a sash fastener lever in the manner above described, the necessity
for drilling the base-plate thereof and rivetting a pin therein is obviated.
14h: 14th dox of Sentember 1895.
J. A. COUBROUGH,
Registered Patent Agent,
10 St. George's Crescent, Liverpool, Agent for the Applicant.
An Improvement in Window Sash Fasteners and the like.
I, MARY SIBBRING, Married Woman, of No. 108, Caznean Street, Liverpool,
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 relates to that class of sash fasteners in which a lever pivotted on
the upper sash is arranged to lock with a projection formed on the lower sash.
Hitherto such lever has been pivotted upon a pin which is let into its base-plate
or frame by drilling and rivetting, and it is found in practice that such pin
frequently becomes loose or broker.
According to this invention I pivot such lever in a box-frame A (Figure 1) by
means of a pin a which passes through a hole 6 in the lever B (Figure 2), said pin
being held in position by the top and bottom plates of the frame A, which is cast
place the lever B with the pin a in the
around it. In constructing the fastener
mould of the frame A, and I run the metal of the frame around it so that the pin a is
embedded in the metal of the frame.
The usual spring is inserted in the frame A, which bears upon the squared
portion of the lever B.
In a modification (Figure 3) I form a trunnion a upon each side of the lever B,
in place of the loose pin a passing through a hole therein. In this case, as before,

page_text: the frame A may be cast around the lever B, the trunnions a being preferably
coated with any suitable composition which will prevent the metal adhering to
them; or the trunnions a may be pivotted in holes formed in the top and bottom
plates of the frame A, in which case the upper plate of the frame is secured to the
fower portion of the frame by screws or rivetting.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a sash fastener of the type herein specified, pivotting the lever (B) thereof
in a box-frame (A) by means of a pin (a) which passes loosely through a hole (b)
in the lever and is held or embedded in the metal of the frame by the latter being
cast around it, as herein described.
2. In a sash fastener of the type herein specified, the formation on the lever (B)
thereof of trunnions (a) by which said lever is pivotted in a box frame substantially
in the manner herein described.
T
...
T
1000
J. A. COUBROUGH,
Registered Patent Agent-Qual. by Exam.,
10, St. George's Crescent, Liverpool, Agent for the Applicant.