Improvements in Sash Fasteners.
Year: 1889

page_text: Date of Application, 4th Oct., 1889
Complete Specification Left, 4th July, 1890-Accepted, 23rd Aug., 1890
PROVISIONAL SPECIFICATION.
Improvements in Sash Fasteners.
I, JAMES HENRY AUSTIN, of 8 De Laune Street, Kennington Road in the Parish
of. Lambeth, in the County of Surrey, Gentleman, do hereby declare the nature of
this invention to be as follows:-
My invention relates to sash fasteners and it consists of certain improvements in
construction, the objects being first the automatic locking or fastening of the sash
when closed, and secondly, the prevention of the said fastening being undone from
the outside of the sash.
To attain these ends I construct my improved fastener in the following manner :-
I take two plates of any convenient and suitable shape and size adapted to be fixed to
the two parts of the sash or frame of a window, and I form on or in one of them a
dovetail of equivalent shaped tongue, and on the other a dovetail or equivalent shaped
groove adapted to receive the tongue on the other plate. The tongue and groove are
tapered or otherwise fashioned so that while there is ample space to ensure their
engaging with one another when they come together they draw the two parts of the
sash together as it is closed, and so prevent them rattling. In the underside of one
of the plates is fitted a sliding tongue adapted to engage with a recess or its equivalent
formed in the underside of the other plate. This tongue is kept forward by a suitable
spring or springs, and its engaging end is bevelled or chamfered off so that it is
pushed back against the spring, or springs, as the sash is closed, and automatically
springs forward to engage with the recess in the other plate when the sash is closed.
The tongue is provided with a suitable handle, or its equivalent, whereby it can be
drawn back to free the fastening to open the sash.
T11
1
CALL
1000
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
Royal Courts Chambers, 70-72, Chancery Lane, London, W.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Sash Fasteners.
I, JAMES HENRY AUSTIN of 8 De Laune Street, Kennington Road in the Parish
of Lambeth in the County of Surrey, Gentleman, 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 io sash fasteners and it consists of certain improvements in
construction, the objects being, first, the automatic locking or fastening of the sash
when closed, and secondly the prevention of the said fastening being undone from the
outside of the sash.
I attain these ends in the manner illustrated in the accompanying drawing in
which Figure 1 is a view in elevation of my improved sash fastener. Figure 2 is a
view in transverse section thereof and Figure 3 is a view in plan thereof.
Throughout these views similar parts are marked with like letters of reference.
I take two plates A and A¹ of any convenient and suitable shape and size adapted
to be fixed to the two parts X and X' of the sash or frame of a window, and I form
on the plate A a dovetail or equivalent shaped tongue a, and in the plate A¹ a dovetail
or equivalent shaped groove a adapted to receive the tongue a on the other plate A.
The tongue and groove are tapered or otherwise fashioned so that while there is ample
Prics d

page_text: :space
to ensure their engaging with one another when they come together, they draw
the two parts of the sash together as it is closed and so prevent them shaking or
rattling. In the underside of the plate A is fitted a sliding tongue B adapted to
engage with a recess a³, or its equivalent, formed in the underside of the plate A'.
This tongue B is kept forward by one or more suitable springs b, and its engaging
end is bevelled or chamfered on the underside so that it is pushed back against the
spring or springs ; as the sash is closed and automatically springs forward to
engage with the recess a² in the plate A when the sash is closed. The tongue is
provided with a suitable knob b or its equivalent whereby it can be drawn back to free
the fastening when it is desired to open the sash.
I sometimes form a second recess a³ immediately above the recess a³ as shown in
the accompanying drawing, to ensure the fastener becoming engaged even if the sash
is not properly closed.
It will be seen that this sash fastener is entirely automatic in its action, that it is
absolutely proof against being opened from the outside of the sash, and that its closing
action draws the two parts of the sash together and prevents them shaking and
rattling.
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 :-
The improved sash fastener, constructed arranged and operating substantially as
herein set forth and shown in the accompanying drawing.
Dated this 4th day of July 1800
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70-72, Chancery Lane, London, W.C. Agent for the Applicant.