A New and Improved Shutter and Door Fastener.
Year: 1891

page_text: Date of Application, 25th July, 1891
Complete Specification Left, 28th May, 1892-Accepted, 2nd July, 1892
PROVISIONAL SPECIFICATION.
A New and Improved Shutter and Door Fastener.
I, THOMAS BAss of 208, Gipsey Lane, Forest Gate, in the County of Middlesex
Mechanical Engineer do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to automatically secure revolving shutters and
sliding doors.
According to this invention I fix at the bottom of a revolving shutter (for
example) a piece of metal on which is hinged or pivoted a catch, I also mount at or
near the tail end of said catch a pawl piece capable of revolving on a pin fixed in
said piece of metal and made of suitable form so that it may be turned either to
come inside or outside of the tail end of aforesaid catch either to lock or unlock the
catch from a hole in sill of window frame provided to receive it.
BROWNE & Co.,
60, Chancery Lane, Agents for Applicant.
COMPLETE SPECIFICATION.
A New and Improved Shutter and Door Fastener.
1, THOMAS BASS of 208 Gipsey Lane, Forest Gate in the County of Middlesex,
Mechanical Engineer, 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 :—
The object of this invention is to automatically secure revolving shutters and
sliding doors.
According to this invention I fix at the bottom of a revolving shutter (for
example) a piece of metal on which is hinged or pivotted a catch, I also mount at
or near the tail end of said catch a pawl piece capable of revolving on a pin fixed
in said piece of metal and made of suitable form so that it may be turned either to
come inside or outside of the tail end of aforesaid catch either to lock or unlock
the catch from a hole in sill of window frame provided to receive it.
And in order that my said invention may be better understood I will now proceed
to describe the same with reference to the accompanying sheet of drawings, in
which
Fig. 1 is an elevation of my improved catch and Fig. 2 section through line A. B.
Fig. 1.
a is a catch pivotted at 6 on to plate c so as to be capable of rocking thereon d is
a pawl piece formed bevelled on both its surfaces so that its lower edge is knife
edged in order that it may easily drop either at the back or front of the tail e. of
catch a. and retain such catch in position either free from or engaging with hole f
made in frame of window or door to receive it in order to keep the shutter locked
the plate c being screwed on to the shutter or door g. g. are two guide pieces. The
action is as follows supposing the catch to be in the position shown on the drawing
i.e. locked in order to unlock it the pawl piece d must be raised the tail pushed back
and the pawl d allowed to fall over the tail e. of catch a. and thus keep it disengaged
from hole when the shutter is close against a window that does not open such as a
shop front for instance I fix a rod to the pawl piece and bring it through side of
window frame so that by pushing the rod the pawl d will be lowered and at the same
time by a projection in rod the tail will be forced back to allow the pawl to come
over it.

page_text: 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 :
The improved shutter and door fastener substantially as set forth.
BROWNE & Co.,
9, Warwick Court, W.C., Agents for Applicant.