An Improved Fastener for Windows, Casements, Boxes, and other such like Purposes.
Year: 1886

page_text: Date of Application, 15th Oct., 1886.
Complete Left, 11th June, 1887.
Complete Accepted, 22nd July, 1887.
ROYCIONAL DIATICATION.
An Improved Fastener for Windows, Casements, Boxes, and other
such like Purposes.
We, CHARLES FREDERICK GRIMMETT and JOSEPH COOK both of Legge Lane
Birmingham in the County of Warwick Manufacturers do hereby declare the nature
of the said invention to be as follows:-
The object of our invention is an improved fastener which is suitable for fastening
windows or casements or the lids of boxes or doors and lids of almost any description
whether sliding doors or lids or hinged ones indeed the fastener is of very general
application to many purposes where two parts require to be kept together but
sometimes opened out.
The back part of our fastener in general appearance is much like an ordinary hinge
indeed it is composed of a flap with screw holes to fasten down to the bottom bar of
the back sash and having a front hinged flap which turns up or down at pleasure and
this flap may have a light spring to keep it up when open so that in lowering and
raising the sash it shall not fall forward accidentally. The front part consists of a
plate having a locking button pivoted thereon edgewise and notched backwards under
the outer end. The hinged flap of the back portion has a slot cut therein of a
peculiar shape which may vary to some extent so long as it is large enough to
admit the button when standing at right angles to the sash that is it may be narrower
or wider at the top it must however be so shaped out as to allow the neck of the
button to turn therein and the outer portion must be so curved as to be eccentric to
the curve described by the neck of the said button so that as the button is turned
after the flap is brought down the neck shall gradually press against the outer portion
of the hole and bring the sashes together-The button may be capable of turning
either to the right or left or both ways when desired.
GEORGE BARKER,
77, Colmore Row, Birmingham,
Agent for the Applicants.

page_text: We CHARLES FREDERICK GRIMMETT and JOSEPH Cooк, both of Legge Lane
Birmingham in the County of Warwick Manufacturers do hereby declare the nature
of our said 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 our invention is an improved fastener which is suitable for fastening
windows or casements or the lids of boxes, or doors and lids of almost any description
whether sliding doors or lids or hinged ones indeed the fastener is of very general
application to many purposes where two parts require to be kept together but
sometimes opened out.
The back part of our fastener in general appearance is much like an ordinary hinge
indeed it is composed of a flap, with screw holes to fasten down to the bottom bar of
the back sash and having a front hinged flap which turns up or down at pleasure and
this flap may have a light spring to keep it up when open so that in lowering and
raising the sash it shall not fall forward accidentally. The front part consists of a
plate having a locking button pivotted thereon, ed gewise and notched backwards under
the outer end.
The hinged flap of the back portion has a slot cut therein of a peculiar shape which
may vary to some extent so long as it is large enough to admit the button when
standing at right angles to the sash that is it may be narrower or wider at the top, it
must however be so shaped out as to allow the neck of the button to turn therein and
the outer portion must be so curved as to be eccentric to the curve described by the
neck of the said button so that as the button is turned after the flap is brought down
the neck shall gradually press against the outer portion of the hole and bring the
sashes together.
The button may be capable of turning either to the right or left or both ways when
desired.
In order that our invention may be clearly understood and easily carried into
practice we have appended hereunto a sheet of drawings upon which we have illus-
trated examples of our hinge which will serve to enable the principle to be applied to
other cases.
Figure 1 is a plan of the flap or hinged portion for fastening the back sash of an
ordinary window.
Figure 2 is a side elevation of Figure 1.
Figure 3 is a plan of the front plate upon which the locking button is mounted.
Figure 4 is a side elevation of Figure 3.
Figure 5 is a plan showing the two parts of the fastener brought together in their
locked position.

page_text: Figure 6 is a side elevation of the two parts of the fastener in their adjacent
position but with the hinged flap turned upwards.
Figure 7 shows a modification of the hole in the hinged flap.
The back portion of the fastener is composed of the flap A which is hinged at a¹ to
the back portion or ear a² which is provided with screw holes for securing it to any
back sash, frame work, box lid or other part or article such as the ordinary back
window sash B Figure 5. The flap A is provided with a slot or hole a³ which is
cut out at a concentric or nearly so to the centre point a³ but the parts a° and a
are much nearer to the centre point a' for the purpose immediately to be explained.
The front part C is secured to the front sash or other door frame or box D and carries
thereon the mounted button d' which has a projecting neck d² which forms the centre
or pivot d agreeing with the centre point as of the hole in the flap A. The
shoulder d³ may be rounded slightly to allow it to work easily around the slot in the
flap A. The action is as follows:-When the flap A is turned over the button d¹
the button is turned around to any position such as that shown at Figure 5 and as
it turns the shoulder d³ binds against the parts of the slot d or d' and bring the two
parts B and D close together where they are securely locked. It will be noticed that
the simplicity stability and security of this fastening are very marked features. It
will be noticed in the one shown that the parts A and a² are made from a thin rolled
metal plate bent over at the hinge and locked together by the bent tongues a³ a³ and a”
and also by the rivets a¹¹ and a12.
The parts C and d¹ are castings as herein shown but the whole may be wrought
metal or the whole cast metal though the manner of manufacture shown is the one we
prefer. The plate C may be fixed crosswise or diagonally and the size and general
shape of each inay be varied to suit the particular purpose and position.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is :-
The improved fasteners for windows, casements boxes, and other such like purposes
composed of a hinged flap A having a slot capable of being operated by the button d¹
substantially as and for the purpose herein set forth.
Dadh. 1011.
T1007
GEORGE BARKER,
77, Colmore Row, Birmingham,
Agent for Applicants.