Improvements in Sash Fasteners.
Year: 1892

page_text: Date of Application, 22nd Mar., 1892
. Complete Specification Left, 23rd Jan., 1893-Accepted, 4th Mar., 1893
Improvements in Sash Fasteners.
I, ARTHUR LAMPLOUGH, of 3 Colenso Road, Clapton Park in the County of
Middlesex, Gentleman, do hereby declare the nature of this invention to be as
follows:-
My invention relates to improvements in sash fasteners of the type set forth in
the Complete Specification (hereinafter referred to as my prior Specification) filed
in pursuance of my application for Letters Patent dated the 19th day of May 1891,
and numbered 8503.
In one of the improvements comprised by my present invention, I employ a ring-
piece of the kind set forth in my said prior Specification; but instead of employing
a bolt-piece as therein specified I employ a bolt-piece constructed after the following
manner. The support or standard, which forms one of the two essential parts of
the bolt-piece, resembles that shown in Figures 1. to 6 of my prior Specification,
except that the vertical slot, instead of passing from a point near the top of the
upright part down and through the base, extends from a point above and close to
the under surface of the support upwards to and through the top of the said support.
The bolt or catch plate is suspended within this slot in a manner similar to that
shown in my prior Specification; but, owing to the fact that the slot is open. to the
top of the support, the catch plate can be moved freely over, and in most cases can
make a complete revolution round the pin or rivet from which it hangs. In order
to facilitate the movement by hand of the said catch plate in an angular direction
round its pin or rivet as a centre, I frequently extend its upper part beyond the top
of the support so that on pressing the said extended part by the finger the 'catch
plate may be moved round till it falls over on the other side of the support so as to
free the sash fastener and enable the window to be opened. In other cases, instead
of facilitating the movement of the catch-plate by band in the way just mentioned,
I place a lateral stud or projection upon the catch plate, which stud projects into
and slightly beyond a slot in one or both of the sides of the upright part of the
support or standard. When the finger is placed upon the end of the said stud the
catch plate may be moved angularly around its pin or rivet so as to release the sash
fastener, and allow the window to be opened.
Another improvement comprised by my present invention is specially, though not
exclusively, adapted for narrow sash bars. In this case, instead of employing a
ring-piece which shall embrace and surround the bolt-piece, 1 employ a device,
hereinafter termed a claw-piece, which fulfils the same function as the ring piece
specified in my prior Specification, but which differs therefrom in this respect that
instead of having a jaw which embraces and surrounds the bolt piece, it is furnished
with two claws which engage two webs or feathers one on each side of the support
or standard. The feathers on the said standards increase in depth from before
backwards; and the claws embrace them in such manner that when the window is
being closed the claw piece hugs the bolt piece the more closely the more the
sashes approach the closed position, until, when the window is shut, the two sashes
are pressed so closely together that a burglar's knife cannot be passed between
them. In some cases a single claw and feather may suffice but the double arrange-
ment mentioned' is preferable.
It will be obvious that parts of these improvements may be combined together
and that parts thereof may be combined with parts of the invention specified in my

page_text: and
prior Specification in that specified in the Complete Specification accompanying
or
my Letters Patent No. 17,315 of 1890.
Dated this 22nd day of March 1892
ARTHUR LAMPLOUGH,
Per J. G. Lorrain, M. Inst. E.E., M. Inst. M.E.,
Norfolk House, Norfolk Street, London, W.C.,
Chartered Patent Agent.
COMPLETE SPECIFICATION.
Improvements in Sash Fasteners.
I, ARTHUR LAMPLOUGH, of 3 Colenso Road, Clapton Park, in the County of
Middlesex, 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 to improvements in sash fasteners of the type set forth in
the Complete Specification (hereinafter referred to as my prior Specification)
accompanying my Letters Patent dated the 19th day of May 1891, and
numbered 8,503.
In one of the improved sash fasteners comprised by my present invention, I
employ a ring-piece of the kind set forth in my said prior Specification; but
instead of employing a bolt-piece as therein specified I employ a bolt-piece con-
structed after the following manner. The support or standard, which forms one of
the two essential parts of the bolt-piece, resembles that shown in Figures 1 to 6 of
my prior Specification, except that the vertical slot, instead of passing from a point
near the top of the upright part down and through the base, extends from a point
above and close to the under surface of the support upwards to and through the
top of the said support. The bolt or catch plate is suspended within this slot in a
manner similar to that shown in my prior Specification; but, owing to the fact that
the slot is open to the top of the support, the catch plate can be moved freely over;
and in many cases can make a complete revolution round the pin or rivet from
which it hangs. In order to facilitate the movement by hand of the said catch-
plate in an angular direction round its pin or rivet as a centre, I frequently extend
its upper part beyond the top of the support so that, on pressing the said extended
part by the finger, the catch plate may be moved round till it falls over on the
other side of the support, so as to free the sash fastener and enable the window to
be opened.
This form of my invention is illustrated in side elevation, front elevation and
plan respectively in Figures 1, and 3 of the accompanying sheets of drawings in
which similar letters of reference indicate similar or equivalent parts. In the said
figures A is the lower meeting rail of the upper sash, to which the bolt-piece D is
attached by screws or otherwise, and B the upper meeting rail of the lower sash to
which is affixed the ring-piece C also by screws or other convenient devices. It
will be seen that the support or standard E of the bolt-piece D resembles that
shown in Figures 1 to 6 of my prior Specification except that the vertical slot F
differs as is hereinbefore described. Owing to the fact that this slot is open to the
top of the standard E the catch-plate G can be moved, as herein before mentioned,
freely around the pin or rivet H. g is the extension of the upper part of the catch-
plate which on being pressed backwards by the finger causes the catch plate to be
moved round in the direction of the arrow till it rests against the back of the jaw
of the ring piece C as is shown by the dotted lines in Figure 1. It is obvious that
by making the parts so that the catch-plate would clear the jaw of the ring-piece
instead of coming to rest against it as shown in Figure 1, the catch-plate would
make a complete revolution round H; but I prefer to construct the parts so that
the catch-plate shall be arrested in the position shown in Figure 1.

page_text: The action of this form of my invention will be readily understood. The parts
being in their normal position as shown in full lines in the figures and it being
desired to open the window, the catch-plate is moved as hereinbefore described into
the position shown in dotted lines in Figure 1. The lower sash is then raised in
the usual manner. In rising the ring-piece raises the catch-plate which turns
in the opposite direction to that indicated by the arrow and finally drops into its
norinal position again. In closing the window the action is as described in my prior
Specification. In another form of my invention, instead of facilitating the move-
ment of the catch-plate by hand in the way just mentioned, I place a lateral stud
or projection upon the catch-plate, which stud projects into and slightly beyond a
slot in one or both of the sides of the upright part of the support or standard. When
the finger is placed upon the end of the said stud the catch-plate may be moved
angularly around its pin or rivet so as to release the sash fastener, and allow the
window to be opened.
This form of my invention is illustrated in side elevation in Figure 4, in front
elevation in Figure 5 and in plan in Figure 6. Jis the lateral stud or projection
upon the catch-plate G projecting through the slot K on one side of the upright
part of the support or standard E of the bolt-piece D.
The action of this part of my invention is as follows. The parts being in their
normal position as shown in full lines in Figure 4, and it being desired to open the
window, the finger is placed on the end of the stud J and the catch-plate moved round
in the direction of the arrow till it comes to rest in the position shown in dotted lines,
where it rests on the front part of the form of ring piece shown. When now the
lower sash is raised the catch-plate is turned in the opposite direction to that
indicated by the arrow and drops into its normal position again. In closing the
window the action is as described in my prior Specification.
When desired the stud J may project on both sides of the catch-plate and nove
in slots in both sides of E.
Another form of sash fastener comprised by my present invention is specially,
though not exclusively, adapted for narrow sash bars. This form is illustrated in
perspective in Figures 7, 8 and 9. In this case, instead of employing a ring-piece
which shall embrace and surround the bolt-piece, employ a device, hereinafter
termed a claw-piece, which fulfils the same function as the ring-piece specified in
my prior Specification. This claw-piece is illustrated in Figures 8 and 9. It
differs from the ring-piece hereinbefore mentioned in this respect that instead of
having a jaw which embraces and surrounds the bolt piece, it is furnished with two
claws which engage two webs or feathers (see Figure 7) one on each side of
the support or standard. The feathers on the said standards increase in depth
from before backwards; and the claws embrace them in such manner that when
the window is being closed the claw piece hugs the bolt piece the more closely the
more the sashes approach the closed position, until, when the window is shut, the
two sashes are pressed so closely together that a burglar's knife cannot be pressed
between them. In sonie cases a single claw and feather may suffice but the double
arrangement inentioned is preferable.
It will be obvious that parts of these improvements may be combined together
and that parts thereof may be combined with parts of the invention specified
and
in my prior Specification in that specified in the Complete Specification
accompanying my Letters Patent No. 17,315 of 1890.
ог
Having now particularly described and ascertained the nature of this inven-
tion and in what mauner the same is to be performed I declare that what I claim is.
1. The arrangement and combination of parts constituting the form of bolt-piece
substantially as set forth with reference to Figures 1, 2 and 3.
2. The arrangement and combination of parts constituting the form of bolt-piece
substantially as set forth with reference to Figures 4, 5 and 6.

page_text: 3. The arrangement and combination of parts constituting the form of sash
fastener substantially as set forth with reference to Figures 7, 8 and 9.
4. The catch-plate with extended part g substantially as set forth.
5. The support or standard with slot F open to the top substantially as set
forth.
6. The claw-piece substantially as set forth with reference to Figures 8 and 9.
7. The bolt-piece substantially as set forth with reference to Figure 7.
Dated this 23rd day of January 1893.
J. G. LORRAIN, M. INST. M.E., M. INST. E.E.,
Norfolk House, Norfolk Street, Strand, London, W.C.,
Chartered Patent Agent.