Improved Sash Fastener.
Year: 1892

page_text: Date of Application, 11th Jan., 1892
Complete Specification Left, 14th Jan., 1892-Accepted, 19th Mar.. 1892
PROVISIONAL SPECIFICATION.
Improved Sash Fastener.
JAMES ROBSON 18 Lennox Street Middlesbro' Yorkshire Joiner do hereby
declare the nature of this invention to be as follows:-
It is of the nature of a bolt across the meeting rails of the sashes, having a
thumb screw which goes through the centre of the bolt which secures the sashes
from any attempt to open them from the outside.
11th January 1892.
JAMES ROBSON.
COMPLETE SPECIFICATION.
Improved Sash Fastener.
JAMES ROBSON 18 Lennox Street Middlesbro' Yorkshire 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:-
The invention consists in a bolt circular in form see A. Figure 2 having a screw
through its centre see B Fig. 4 the said bolt slides in a groove C Fig. 2 made for
it, and screwed unto the sash meeting rail Fig. 1. of the bottom sash, when closed
the said bolt projects three-eighths of an inch across the meeting rail of top
sash D Fig. 1. the said three-eighths of bolt fits into a hole E. Fig. 4 bored in an
inch piece of whatever material, the fastener is made of, and then when the screw
is screwed home it goes through the centre of the said inch piece, P Fig. 4 thus
screwing the two sashes firmly together plan Fig. 1. making it impossible for the
rain, & snow to beat upwards between the meeting rails of the sashes, which
frequently occurs with the fasteners in common use, especially when in an exposed
neighbourhood such as when houses face the sea, &c.
For domestic use it is proposed that the screw through the centre of the fastener
be a thumb-screw, Figs. 1. 2. 3. 4. but, in the case of public buildings such as
banks, where the windows are rarely opened it is proposed for greater security, to
make the screw-head to finish in a fair or flush surface H. Fig. 5. with the end of
bolt, the head of screw being made in a circular form K Fig. 6. of five-eighths of
an inch diameter or three thicker than the body of screw, and three eighths long
that is the screw-head is five-eighths by three-eighths of an inch having on its
opposite sides, two grooves or slots, L Fig. 6 to receive a key Fig. 8. by which the
screw is turned either in screwing or unscrewing, the said key being separate from
the fastener, so that without the key, the fastener cannot be opened. A fastener
of this kind cannot be slipped back or opened from the outside.
The Figures 3 and 7 are the respective side views.
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 that the
1st. Novelty consists in a bolt across rails of sashes
2nd. Which is secured by a screw through centre
3rd. Cannot be opened from outside, like others
4th. And in the screw being unscrewed by hand only when, the screw employed
is a thumb-screw.
5th. When the screw (instead of being a thumb-screw) finishes in a fair surface

page_text: with the end of bolt, a key being employed, to open it, the key fitting into two
slots on screw head which is suitable for banks &c.
6th. When fastened the weather cannot penetrate, between the sashes.
Dated this 11th day of January 1892
JAMES ROBSON.