IMPROVEMENTS IN THE CONSTRUCTION OR WINDOW Sigure
Year: 1864

page_text: LETTERS PATENT to John Askew, of No. 27, Charles Street, Hampstead
Road, in the County of Middlesex, Engineer, for the Invention of
"IMPROVEMENTS IN THE CONSTRUCTION OR WINDOW Sigure"
Sealed the 14th June 1864, and dated the 4th January 1864.
PROVISIONAL SPECIFICATION left by the said John Askew at the
Office of the Commissioners of Patents, with his Petition, on the 4th
January 1864.
I, JOHN ASKEW, of No. 27, Charles Street, Hampstead Road, in the
County of Middlesex, Engineer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE CONSTRUCTION OF WINDOW SASHES," to be
as follows, that is to say :-
Making the sash narrower than the sash frame, and putting additional
pieces to the sides of the sash with a rabbeted joint to such additional pieces
to correspond with a rabbeted joint made on sash, in order to make up the
necessary width of the sash to suit the sash frame, to which sash and additional
side pieces are screwed a camm centre, which camm centre has a hole for a
key to fit into it, by turning which key similarly to unlocking the door of a
railway carriage, the side pieces to the sash frame are expanded, and the
outside of the sash can then be turned inside, and the inside turned outside,
for the purpose of cleaning the windows, and for other purposes.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Askew in the Great Seal Patent Office on the 16th
June 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
ASKEW, of Charles Street, Hampstead Road, in the County of Middlesex,
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of January, in the year of our
Lord One thousand eight hundred and sixty-four, in the twenty-seventh
year of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said John Askew, Her special licence that I, the said John
Askew, my executors, administrators, and assigns, or such others as I,
the said John Askew, 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 "IMPROVE-
MENT IN THE CONSTRUCTION OF WINDOW SASHES," upon the condition (amongst
others) that I, the said John Askew, 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 Askew, do hereby declare the
nature of my said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following state-
ment:-
My Invention consists in making the sashes narrower than the sash frame,
and putting additional pieces to the sides of the sash with a rabbeted joint
to such additional pieces to correspond with the rabbeted joint made on sash,
in order to make up the necessary width of the sash to suit the sash frame, to
which sash and additional side pieces are screwed a cam centre, which cam
centre has a hole for a key to fit into it, by turning which key similarly to
unlocking the door of a railway carriage, the side pieces to the sash frame are
expanded, and the outside of the sash can then be turned inside, and the
inside turned outside for the purpose of cleaning the windows, and for other
purposes, including window cleaning, ventilating, painting, glazing, and

page_text: prevention of accidents, arising from the system now generally used by
cleaning windows outside of houses instead of intside, by merely turning the
sash.
Having now described the nature of the said Invention, and likewise more
easily understood by referring to the accompanying Figures 1, 2, 3, on
Drawing.
DESCRIPTION ON DRAWING.
Fig. 1, elevation, shewing part of sash frame with cam centre, cam, and
provision for unlocking; Fig. 2, plan of same; Fig. 3, plan of sash with plate
attached for revolving on pivot E; A, sash frame; B, guide plate for cam
centre; C, cam; D, plate for securing sash frame; E, pivot for sash frame to
revolve upon; F, spring for cam adjustment; G, plate on sash for carrying
pivot E; H, sash; I, screwed nut for securing spiral spring on pivot E which
presses against the sash plate G; I, socket for unlocking.
Having now particularly described and ascertained the nature of the said
Invention, and I claim the introduction of mechanism for turning the outside
of the sash inside, and the inside outside, by means of the said Invention.
In witness whereof, I, the said John Askew, given under my hand
and seal, the Twenty-seventh day of May, in the year of our Lord
One thousand eight hundred and sixty-four.
Witness,
GIRARDO MIGOTTI.
JOHN ASKEW. (L.S.)