IMPROVEMENTS IN WINDOW SASH FASTENINGS
Year: 1872

page_text: LETTERS PATENT to John Bewsher, of Great Ilford, in the County
of Essex, Gentleman, for the Invention of "IMPROVEMENTS IN WINDOW
SASH FASTENINGS."
Scaled the 27th December 1872, and dated the 1st July 1872.
PROVISIONAL SPECIFICATION left by the said John Bewsher at the
Office of the Commissioners of Patents, with his Petition, on the
1st July 1872.
. I, JOHN BEWSHER, of Great Ilford, in the County of Essex, Gentle-
man, do hereby declare the nature of the said Invention for "IMPROVE-
'MENTS IN WINDOW SASH FASTENINGS," to be as follows :-
The fastenings consist of two plates of metal, one of which having
on it the catch or hook to hold the bolt when the window is fastened
is fixed to the front or lower sash, and the other to which is attached
the bolt is fixed to the back or upper sash, the two plates are therefore
flush with each other as is usual. The bolt or fastening portion has
through it a slot, so that when fixed to the back plate by a pin or screw
passing through this slot (and upon which pin it turns) it is capable

page_text: besides turning upon the pin or screw of being moved the length of the
slot backwards and forwards. This bolt is acted upon by a spring in
such a manner that when the bolt is turned into the catch and the
window fastened the bolt is forced by sliding by means of the slot on
the central pin or screw into a catch which holds it so that it cannot
be opened from outside tho window, but must be first pulled forward
from the inside before it can be turned to clear the sash to enable the
window to be opened.
..
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Bewsher in the Great Seal Patent Office 1
on the 31st December 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BEWSHER, of Great Ilford, in the County of Essex, Gentleman, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of July, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said John Bewsher, Her special licence that I,
the said John Bewsher, my executors, administrators, and assigns, or
such others as I, the said John Bewsher, my executors, administrators,
and assigns, should at any time agree with, and no others, from time
to time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands, and.
Isle of Man, an Invention for "IMPROVEMENTS IN WINDOW SASH FASTENINGS,"
upon the condition (amongst others) that I, the said John Bewsher, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Bewsher, do hereby declare
the nature of my said Invention, and in what manner the same is to be

page_text: performed, to be particularly described and ascertained in and by the
following statement:-
The fastners consist of two parts made of metal, one of which
carrying the bolt or moveable part and its spring is fixed upon one sash,
and the other carrying a catch for the bolt is fixed upon the other sash.
The bolt turns upon a pin or screw shutting when turned under the
catch of the other sash, but instead of the hole through which such pin
or screw passes being round only it is elongated so that the bolt can
be slid upon the pin or screw backwards and forwards as well as turned
upon it. When the bolt is pulled forward preparatory to being turned
out of the catch to unfasten the sash it pulls against a spring, so that
when turned into the catch a certain distance it is forced back into a
stop and cannot be again turned out of the catch without being first
pulled forward from within.
In witness whereof, I, the said John Bewsher, have hereunto sct
my hand and seal, this Thirty-first day of December, in the year
of our Lord One thousand eight hundred and seventy-two.