A New or Improved Sash Fastener.
Year: 1892

page_text: Date of Application, 23rd Dec, 1892
Complete Specification Left, 2nd Sept., 1893-Accepted, 7th Oct., 1893
PROVISIONAL SPECIFICATION.
A New or Improved Sash Fastener.
I, CONSTANTINE HENDERSON of 3 Gower Street, Bedford Square, Bloomsbury
in the County of London Architect do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to construct a strong and simple fastener for
window sashes and the like without reducing the substance of the sashes which
cannot be unfastened from the outside of the window and which will draw the
meeting rails of the sashes together and prevent draughts or rattling under high
winds.
Now according to this invention I attach to the outer-sash a metal hollow casting
of cylindrical shape with a flange having an interior screw therein and to the inner
sash I secure a similar casting in which rotates a bolt or set screw the exterior
thread of which engages with the interior thread of the aforesaid casting attached
to the outer rail. A milled head or other suitable means of rotating the bolt is
provided.
°
And in order that my said invention may be fully understood I will proceed to
explain the same with reference to the accompanying sheet of drawings in
which :-
Figure 1 represents a plan of a fastener for window sashes and the like constructed
according to this invention.
Figure 2 is side elevation of same.
Figure 3 section of same.
Figure 4 end elevation of same.
The same letters denote the same parts in all the figures.
A is a metal socket having an internal screw thread therein which engages with
an external screw thread on the set screw or the bolt B. The said bolt or set screw
which may be made of any suitable metal has a hardened steel core C through the
centre thereof as shewn in Figure 3. If the bolt B is made of hardened steel
the longitudinal core may be dispensed with. D is a milled head to rotate the
bolt B.
E is a metal casting secured to the meeting rail of the inner and outer sashes by
means of screws passing through the holes F F.
HH are holes in the flange G of the casting A to receive screws for attaching
the said casting to the meeting rail of the outer sash. Instead of the milled head D
I may form a suitably shaped recess in the bolt B to receive a key or wrench for
rotating the same or I may form the inner end of the said bolt square hexagonal
or other suitable shape for the same purpose. It is evident that when the fastener
is screwed up it prevents the sashes from rattling and that a window to which it is
applied cannot be opened from the outside without breaking the glass as it is
impossible to saw through the hardened steel bolt or core. I prefer also to
provide the bolt B with a cottar or other suitable stop to prevent the same from
being withdrawn from the casting E.
Dated this 23rd day of December 1892.

page_text: COMPLETE SPECIFICATION.
A New or Improved Sash Fastener.
1, CONSTANTINE HENDERSON late of No. 3 but now residing at No. 27 Gower
Street, Bedford Square, Bloomsbury, in the County of London, Architect 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 this invention is to construct a strong and simple fastening for
window sashes and the like without reducing the substance of the sashes and which
cannot be unfastened from the outside of the window and which-will-draw the
meeting rails of the sashes together and prevent rattling and exclude dust dirt and
draught.
Now according to this invention I attach to the outer sash a metal socket with a
flange at each side through which pass screws to secure the socket to the sash. The
socket has a female screw thread formed therein which engages with a male theard
formed on a pin or bolt rotating in a similar socket attached to the inner sash.
The bolt or pin is rotated by means of a milled head or a key.
And in order that my said invention may be fully understood I will proceed to
explain the same with reference to the accompanying sheets of drawings in
which :-
Figure 1 represents section of sash rails fitted with a fastener constructed
according to this invention.
Figure 2 is elevation of same shewing end view of fastener.
Figure 3 is section through sash rails and fastener.
Figure 4 is plan of fastener.
Figure 5 shews a modified form of fastener fitted with a bolt adapted to be
rotated by means of a key.
Figure 6 is end view of same.
Figure 7 is section and
Figure 8 plan of same.
Figure 9 represents side view of the key.
Figure 10 end view of same.
The same letters denote the same parts in all the figures.
a is a metal socket having a female screw thread formed therein which engages
with the male thread formed on the pin or bolt b which is formed of any suitable
metal and may have a hardened steel core through the centre thereof as shewn at C
Figure 3 of the drawings filed with the Provisional Specification. If the bolt or
pin b is made of hardened steel the core C may be omitted. d is a milled head for
rotating the bolt 6 which rotates in a metal socket e attached to the meeting rail
of the inner sash by means of screws passing through holes ff in the flanges g 9.
Similar flanges h h having screw holes therein are formed on or attached to the
socket a.
When the bolt or pin b is screwed up the meeting rails ii are brought together
and draught and dust excluded rattling being also prevented.
Instead of the milled head d I may form the inner end d¹ of the bolt of any
convenient shape, for example, square as shewn in Figures 5, 6 and 7 and fit thereto
a key k shewn at Figures 8, 9 and 10 having a socket therein to fit the end d¹ of
the bolt d. m is a collar on the bolt d which bears on the shoulder formed at the
bottom of the recess e¹ in the socket e or the bolt b may have a recess formed therein
to receive a key or wrench for rotating the same.
To prevent the bolt 6 from being withdrawn from the socket e I may form the
shank of the said bolt of the same diameter as the bottom of the thread as shewn
at Figure 7 and hold the said bolt in its place by means of a ring a made in halves

page_text: which ring is forced into the said socket forming a bearing in which the said bolt
rotates.
When the bolt 6 is screwed up it not only draws the meeting rails ii of the sashes
together but also secures the window from being opened from the outside without
breaking the glass as it is impossible to saw through the bolt b when provided with
the hard steel core.
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. In a fastening for window sashes and the like the combination of a flanged
socket a having an internal screw thread formed therein with a bolt or pin b of
hardened steel (or having a hardened steel core) rotating in a flanged socket e the
said bolt having formed thereon an external screw thread for engaging with a
thread in the socket a and a means for rotating the said bolt all substantially as
herein before described and illustrated by the accompanying drawings.
2. In a fastening for window sashes and the like the metal bolt A having a
hardened steel core C and an external screw thread formed on the said bolt all
substantially as specified and shewn at Figure 3 of the drawings accompanying the
Provisional Specification.
Dated this 2nd day of September 1893.
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicant.