Improved Centres for Reversible Sashes.
Year: 1890

page_text: Date of Application, 30th May, 1890
Complete Specification Left, 8th Sept., 1890-Accepted, 11th Oct., 1890
PROVISIONAL SPECIFICATION.
Improved Centres for Reversible Sashes.
I, JOHN NICHOLAS HANCOCK, of Pilton, Barnstaple in the County of Devonshire,
Builder, do hereby declare the nature of this invention to be as follows:-
"
The object of my invention is to provide for sashes of the kind known as "reversible"
or "revolving an improved turnover, centre, or pivot, on which they may turn.
The upper and lower sashes, or one of them, is made in two sections, the inner one
turning or revolving on the centre. This improved centre is the subject of my
invention and is thus made:-A counter-sunk meial socket having a cone shaped
orifice to fit the cone head of screw-is fitted flush with the outer section of the sash
and the screw with its cone head aforementioned is inserted also flush to the sash
so as to offer no resistance in sliding the sashes up or down. When the screw is
placed in the sunk centre, the sash or part of it may be turned inward or outward at
will without the least trouble. Any suitable method may be adopted to secure the
two halves of the sash stile in position.
Dated this 20th day of May 1200
JOHN BLACK,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improved Centres for Reversible Sashes.
1, JOHN NICHOLAS HANCOCK of Pilton Barnstaple in the County of Devonshire,
Builder, 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 my invention is to provide for sashes of the kind known as reversible
or revolving, an improved turnover, centre, or pivot on which they may turn. The
upper and lower sashes-or one of them is made in two sections, the inner one
turning or revolving on the centre. This improved centre is the subject of my inven-
tion. For purposes
where rigidity is desirable, as for instance frames of swing
mirrors and the like, I prefer to make the socket serrated or indented as shown at
Figs. 1 and 2 on the sheet of drawings annexed and the head of the screw is also
serrated in order to afford a grip or bite. The plain socket and screw is made as
shewn at Figs. 3 and 4. The socket is fitted with points which pressing into the
woodwork of the frame prevent the socket from turning round when the screw is
turned. In fitting my improved centre to reversible sashes I provide the counter-
sunk metal socket having the cone shaped orifice to fit the cone bead of screw-and
fix the same flush with the woodwork of the outer half of the sash. A screw with a
coned head as aforementioned is inserted also flush with the woodwork of the sash so
as to offer no resistance in sliding the sashes up or down. When the screw is placed
in the sunk centre the sash or part of it may be turned inwards or outwards with-
out the least trouble. Any suitable method may be adopted to secure the two halves
of the sash stile in position.
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
1. A centre or turnover formed of a cylindrical socket with a coned shaped orifice

page_text: 2. The serrations upon the head of screw and in orifice of socket.
3. The points or studs at the back of the cylindrical socket to prevent its turning.
4. A centre or turnover made substantially as described and illustrated.
Dated this 8th day of September 1890.
JOHN BLACK,
Applicant's Agent.