An Improved Window-fastener.
Year: 1893

page_text: Date of Application, 12th June, 1893
Complete Specification Left, 12th Mar., 1894-Accepted, 21st Apr., 1894-
An Improved Window-fastener.
We JAMES MCHARDY Scientific Expert and WILLIAM ROBERT MCHARDY
Engineer both of Zoffany House Chiswick Middlesex and BLAND GARDNER
SINCLAIR of 19 Eldon Street London Merchant do hereby declare the nature
of this invention to be as follows:-
This invention which relates to an Improved Window-fastener is carried into
practice by means of a suitable bolt, split up the centre, or made of half section
material doubled, which at the same time as it slides in through a convenient
fixture is engaged by a small transverse piece inside the split or slot. The bolt
when drawn out will in consequence of this construction hang upon the said
transverse retaining piece, and will be out of the way without being disengaged
when the window is opened. The fixture through which the said bolt slides, and
which likewise retains the said bolt by means of the aforesaid transverse piece
(either fixed loose or revolving) may be attached to the window-sash by screwing
into it or in any convenient manner. The said split bolt shall be closed at the
inner end and may be provided with any convenient stop or handle at the outer
end. The said transverse piece may be flattened in the middle to fit the slot in
the bolt and round at the ends to admit of turning in the fixture.
Dated this 10th day of June 1893
JAMES MC HARDY.
WILLIAM ROBERT MCHARDY.
BLAND GARDNER SINCLAIR.
We JAMES MCHARDY Scientific Expert and WILLIAM ROBERT MCHARDY
Engineer both of Zoffany House Chiswick Middlesex and BLAND GARDNER
SINCLAIR of 19 Eldon Street London, Merchant 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 :-
Our said invention for an Improved Window-fastener consists of a suitable bolt so
grooved or split up the centre or made of half section inaterial doubled, that it
may slide upon a stop or transverse piece or pieces in such a manner that it may
be pushed in through the sashes of a window and so prevent their upward or
downward movement; or, when pulled out to release the sashes, it is retained by
the aforesaid stop in a suitable fixture upon the window-sash in such a manner as
to admit of the said bolt's taking up a loose hanging position.
That our said invention may be the more readily understood we beg to submit
the accompanying drawings and references thereto.
Fig. 1 is a section of window-sashes mounted with our said invention.
a and are the sashes (say at the corners of the frames). A hole is bored
through one sash and partly through the other (the outside one) c is a suitable
fixture attached to the sash a. d is a spindle or stop in the said fixture (c). e is
a slot in the bolt which is inserted-(as represented in section)-in the hole bored
in the sashes. g is a suitable button on the end of the bolt.

page_text: As the stop d, engages the slot e the bolt may be withdrawn until it practically
hinges upon the stop d: but, the fixture c is open on the under side, consequently,
when the bolt is pulled out to the end of the slot, it drops into the hanging-
(dotted-lines) position g³.
a section of the bolt made of half section material or split material which
provides an open slot, e.
y-a section of the bolt made by grooving the slot required as shown at e.
As in this case the slot e does not admit of a transverse stop as at d, the said
stop is formed by the insertion of two short pins, one at each side of the fixture c
or by making the said fixture with such points upon the material as shall be
capable of engaging the double slot.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what
we claim is;-
1. The slotted bolt capable of hanging out of the way when withdrawn,
particularly as herein described and set forth by the drawing.
2. The fixture with a pin or stop capable of retaining the said slotted bolt and
open at the side so as to admit of the hinging of the said bolt, as herein
described and set forth.
Dated this 12th day of March 1894
F.
JAMES MCHARDY.
WILLIAM ROBERT MCHARDY.
BLAND G. SINCLAIR.
JAMES MC HARDY.
WILLIAM ROBERT MCHARDY.
BLAND G. SINCLAIR.