Improvements in Window Fasteners.
Year: 1890

page_text: Date of Application, 4th July, 1840
Complete Specification Left, 4th Apr., 1891-Accepted, 23rd May, 1891
PROVISIONAL SPECIFICATION.
Improvements in Window Fasteners.
1 WILLIAM HITCHIN of 34 Tindal Street Birmingham in the County of
Warwick Manufacturer do hereby declare the nature of my said invention to be as
follows:-
My invention has for its object improvements in window fasteners which are
thereby rendered more simple and easy to manufacture and at the same time more
effective in their operation and more secure. My fasteners are as follows:-
To the upper part of the arm I hinge a sboe which lies upon the top of the
quadrant of the front plate when the arm is brought over and the window fastened.
When the arm is in this position the shoe piece lies upon the top of the arm behind
a projection which is formed on the top of the quadrant piece and the arm cannot.
be turned back until the shoe is lifted by means of a spur piece near the knob of
the arm. Thus the shoe operates by its own gravity but I may assist it by a spring
in which case its position might be somewhat modified. By this means I can in
most cases dispense with the box spring as the shoe keeps the arm from turning
back and thus the box and back plate may be made much shorter. Sometimes
windows come together very unevenly in which case the arm of my fastener may be
pivotted to the box or back plate and also hinged thereto horizontally so that the'
arm will lift or fall to follow the position of the front sash which is effected by
making the pivot block at the end of the arm to turn in its place the arm being
binged in a slot in the block above the pivot of the block. I prefer to cast the
quadrant piece with a continuous solid leather piece connecting it with the foot
plate for increased strength but it is not absolutely necessary to do so. The
fasteners may be made from any suitable metal and either cast or stamped or
partially so.
Dated this 3rd day of July 1890
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Window Fasteners.
I, WILLIAM HITCHIN of 34 Tindall Street Birmingham in the County of
Warwick Manufacturer do hereby declare the nature of my said 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 has for its object improvements in window fasteners, which are
thereby rendered more simple and easy to manufacture and at the same time more
effective in their operation and more secure. My fasteners are as follows:-
a
To the upper part of the arm I hinge a shoe which lies upon the top of the
quadrant of the front plate when the arm is brought over and the window fastened.
When the arm is in this position the shoe piece lies upon the top of the arm behind
projection which is formed on the top of the quadrant piece and the arm cannot be
turned back until the shoe is lifted by means of a spur piece near the knob of the
arm. Thus the shoe operates by its own gravity but I may assist it by a spring in
which case its position might be somewhat modified. By this means I can in most
cases dispense with the box spring as the shoe keeps the arm from turning back
and thus the box and back plate may be made much shorter. Sometimes windows
come together very unevenly in which case the arm of my fasteners may be pivoted

page_text: to the box or back plate and also hinged thereto horizontally so that the arm will
lift or fall to follow the position of the front sash which is effected by making the
pivot block at the end of the arm to turn in its place the arm being hinged in a
slot in the block above the pivot of the block. I prefer to cast the quadrant piece
with a continuous solid feather piece connecting it with the foot plate for increased
strength but it is not absolutely necessary to do so. The fasteners may be made
from any suitable metal and either cast or stamped or partially so.
In order that my invention may be clearly understood and more easily carried
into practice I have appended hereunto a double sized sheet of drawings upon which
I have fully illustrated the nature of my said improvements.
Figure 1., is a plan of one of my improved fasteners attached to the sashes X
and X¹.
Figure 2., is a front elevation of same.
Figure 3., is a sectional elevation on the line 1-2.
Figure 4., shews a modification in the mode of mounting the quadrant.
Figure 5., is a part plan in which the arm is shewn pivoted without the operation
of a spring.
In carrying my invention into effect I hinge the shoe E to the upper part of the
arm A at a the shoe E lying upon the top of the quadrant D of the front plate
and when the window is fastened the arm is against the stop the toe e' of the shoe
engages with the notch or decline which is formed upon the quadrant D and thus
the arm A cannot be pressed back until the toe e' of the shoe E is raised sufficiently
clear of the notch d' which is effected by means of the spur piece or nose e³ near the
knob a² of the arm A. The shoe E by its own weight engages with the notch (
but may be assisted in this by the operation of a spring. By this means I am
enabled in many cases to dispense with the main box spring H as the shoe E keeps
the arm from turning back and thus the box and back plate K may be made much
shorter as shewn by Figure 5. The point of the quadrant is formed with the
incline d² which assists to raise the sash X as the arm A is forced home; but some-
times come together very unevenly in which case the arm A may be pivoted as
shewn in elevation by Figure 6 and on plan by Figure 7 to the box or back plate K
and also hinged horizontally so that the arm Å will rise or fall to follow the position
of the front sash X' which is effected by making the pivot block k¹ at the end of
the arm to turn on the plate, the arm A being hinged in a slot a³ in the block above
the pivot of the block. I may cast the quadrant piece with the continuous solid
feather piece d², or I may lighten it and save metal by perforating it as shewn
by d³.
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-
1st. The improvements in window fasteners consisting of the shoe E mounted to
act substantially as and for the purpose herein set forth and shewn upon the
drawings.
2nd. The improvements in window fasteners: substantially as and for the purpose
herein set forth and shewn upon the accompanying drawings.
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent for Applicant.