Improvements in Sash Fasteners.
Year: 1897

page_text: Date of Application, 24th Nov., 1897
Complete Specification Left, 24th Aug., 1898- Accepted, 24th Jan., 1899
Date of Application, 24th Nov., 1897
Complete Specification Left, 24th Aug., 1898- Accepted, 24th Jan., 1899
Improvements in Sash Fasteners.
I, JOHN SMITH EARNSHAW, of No. 24, Hartington Road, Stockton on Tees, in
the County of Durham, Joiner, do hereby declare the nature of this invention
to be as follows:-
It is a sash fastener made of a barrel with a bolt inside, around which is a
spiral spring to close the bolt. A pin is fixed in the bolt which works in a
diagonal groove inside the barrel. This groove guides the motion of the bolt.
A catch is made in the groove to hold the bolt when open. There is also a bolt
slot at the side of the barrel which on being struck by the catch fixed on the
upper sash when the window is shut liberates the pin from the catch in the groove,
the spring then pushes the halt automatically into the catch on the upper catch.
The diagonal groove in the barrel giving the bolt a half turn causing a cam on
the end of the bolt to lock behind another cam in the catch fixed on the upper
sash which draws the two sashes together preventing any rattle. The fastener
cannot be opened from the outside making it practically burglar proof. The
fastener is opened by a small drop handle on the end of bolt inside, to which a
small padlock can be fixed.
Dated this 3rd day of November 1897.
JOHN SMITH EARNSHAW.
Improvements in Sa h Fasteners.
I, JOHN SMITH EARNSHAW, 24, Hartington Road, Stockton-on-Tees, Durham,
Joiner, 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:--
It is a sash fastener made of a barrel A with a bolt B inside around which is
a spiral spring C to close the bolt-A pin 1) is fixed in the bolt, which works in
a diagonal groove inside the barrel. This groove guides the motion of the bolt.
A catch E is made in the groove to hold the holt when open. There is also a
bolt or slot F at the side of the barrel which on being struck by the catch G
fixed on the upper sash when the window is shut liberates the pin 1 from the
catch in the groove, the spring C then pushes the bolt B automatically into
the catch G on the upper sash. The diagonal groove in the barrel giving the
bolt B a half turn, causing a cam H on the end of the bolt B to lock behind
another cam I in the catch fixed on the upper sash, which draws the two sashes
[Price Sd 1

page_text: together, preventing any rattle. The fastener cannot be opened from the out-
side, making it practically burglar proof.
The fastener is opened by a small drop handle on the end of the bolt B
inside to which a small padlock can be fixed.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim is:-
That a round bolt in a barrel with a cam on the end locks behind a cam in
the catch fixed on the upper sash. A spiral spring is fixed round and to the bolt
and to the barrel. A pin on the bolt works in a spiral groove in the barrel.
A small bolt or slot at the side of the barrel, which on being struck by a plate
on the catch on the upper sash, when the window is closed. liberates the pin and
the spring pushes forward the bolt. The pin guided by the spiral groove
causes the bolt to turn, locking the cam on the bolt behind the cam on the catch
and draws the sashes together.
Dated this 23rd day of August 1898
JOHN SMITH EARNSHAW.