An Improved Sash Fastener.
Year: 1889

page_text: Date of Application, 21st May, 1889
Complete Specification Left, 10th Feb., 1890-Accepted, 22nd Mar., 1890
PROVISIONAL SPECIFICATION.
An Improved Sash Fastener.
1, WILLIAM MACDONALD of 4 Brook Street North Egremont Cheshire, do hereby
declare the nature of this invention to be as follows:-
I intend to use this invention to secure the sashes of windows together chiefly
when using my Invention for "An Improved means of ventilation adaptable to
existing sash windows" dated May 13th 1889 a Provisional Protection for which I
have previously applied and which has been numbered 8019.
This invention consists of a piece of metal secured to and projecting from the
inside lining of a window frame and through this works a long pin or screw capable
of reaching to and being screwed into the side of the upper sash which is prepared
with a series of two or more holes to receive the same which allows the bottom sash
to be raised a certain distance and no more. The fastener may be a piece of metal,
one end fixed permanently to the lining and the other end temporarily fixed to the
upper sash by means of a short screw or other fastening. As my Improvements are
capable of some modifications without departing from the principle thereof, I do not
restrict myself to materials, dimensions or to the precise form or placement of the
several parts thereof.
Dated this 01st day of May 18ea
RAYNER & CASSELL,
37, Chancery Lane, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Sash Fastener.
I, WILLIAM MACDONALD of 4 Brook Street North Egremont Cheshire, Butler, 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:
My invention relates to an improved fastener for the sashes of windows and is
particularly applicable thereto when either the lower sash is raised a small distance to
allow air to enter between the two sashes at their junction for ventilating purposes, or
the top sash is slightly lowered for the purpose of allowing the ingress of air at the
top as well as in the centre. According as the lower or upper sash is raised or
lowered the position of my improved fastener must be reversed as hereinafter more
fully described. My improved fastener is more particularly applicable in cases when
the lower sash is raised and a bar of wood is placed on the sill below to prevent air
entering at the bottom of the window such as described in the specification of my
application for "Her Majesty's Royal Letters Patent" No 8019 dated 14th of
May 1889. My improved fastener consists of a long screw threaded pin hinged to a
small plate provided with a tapped central perforation through which is screwed the
shank of a thumb screw, and in order that my invention may be more fully understood
I have shewn the same in the accompanying drawing in which Fig. 1 is a front view
of a portion of the top and upper part of two sashes, the lower of which is raised a
small distance as shewn in Fig. 3 which is a section thereof. Fig 2 is a plan view of
the arrangement illustrated in Figure 3. A is the long screw threaded pin fixed to
the top of the lower rail R of the top sash S secured by two screws through the central
tapped perforation of a small plate into the bottom of the said rail R a sufficient depth
to allow the top plate B hinged thereto to lay flat and horizontal upon a small metal
plate p' likewise secured by two screws upon the raised top rail R' of the lower
cách Îlac chan in Ta 2

page_text: The metal plate p₁ is similarly with the plate p furnishe' with a central tapped
perforation through which a thumb screw O is tightly screwed into the rail R¹ and
thus efficiently lock the two sashes in the position illustrated.
Should the upper sash S be raised instead of the lower sash the fastener should be
reversed i.e. the long pin A would be fixed in the rail R' and the thumb screw in the
rail R. As my improvements are capable of some modifications without departing
from the principle thereof, I do not restrict myself to materials, dimensions, or to
the precise form or placement of the several parts thereof.
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 1
'claim is :-
The improved window sash fastener for interlocking the two sashes of a window
when one of the said sashes is raised substantially as and for the purpose described.
Dated this 10th day of February 1890.
RAYNER & CASSELL,
37, Chancery Lane, London, W.C., Agents for the Applicant.