IMPROVEMENTS IN WINDOW SASH FASTENERS
Year: 1886

page_text: Date of Application, 13th Dec., 1886.
Complete Left, 24th June, 1887.
Complete Accepted, 5th Aug., 1887.
I HENRY THOMAS BASSETT of 82 Ash Street Wolverhampton in the county of
Stafford Brass Finisher do hereby declare the nature of my invention for
IMPROVEMENTS IN WINDOW SASH FASTENERS to be as follows:-
The object of this invention is to prevent the window being forced from the
outside by a knife or other instrument, and also to draw the window sashes together
tightly to prevent their shaking with the wind.
The fastener substantially consists of two plates, each plate to be screwed down
with three or more screws-the back plate has a moveable pivot to which is jointed a
lever, this lever has the end threaded so that a knob which it carries can be screwed
up or down The front plate as a solid upright piece, slotted down centre into which
slot the lever falls, at top of slot there are two projections in front under which the
knob on lever screws, and when thus screwed up lever cannot be moved, the lever
being jointed to the moveable pivot in back plate, can be tilted up or turned right
or left.
Dated thin Elenath dose of Danamber 1986

page_text: COMPLETE SPECIFICATION.
Improvements in Window Sash Fasteners.
I, HENRY THOMAS BASSETT, of 82 Ash Street, Wolverhampton in the County of
Stafford, brass finisher, 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, reference being had to the accompanying drawings,
and the letters of reference marked thereon (that is to say) :-
:-
This invention has for its object the construction and employment of a simple and
efficient window sash fastener which shall be secure against any attempt to unfasten
it by means of a knife blade or other instrument inserted between the meeting bars
of the sashes, and by the employment of which the sashes may be drawn tightly
together to prevent them from rattling, not only when they are new but also after the
joinery may have shrunk considerably in drying.
A sash fastener constructed according to, and for the purpose of, this invention
consists essentially of a mounting fixed to the inner sash and having an open-ended
slot formed therein, and of an arm so connected with a plate or mounting fixed upon
the outer sash as that it may readily be moved vertically or sideways (or, if desired, in
an inclined direction) to bring its outer end into the open-ended slot aforesaid, such
outer end being screw-threaded and provided with a thumb-nut or nut with a milled
edge, or other nut convenient for being screwed up by the finger and thumb, or other-
wise such arm having its outer end formed separate from its inner end and connected
therewith by means of a shank on the outer end screwed into the inner end, the outer
end being in such case provided with a collar at the end which is the more remote
from the inner end of the arm. The sashes are fastened, and drawn tightly together,
by first moving the outer end of such arm into the slot, aforesaid, and then screwing
up the nut against the outer face of the mounting in which the slot is formed, or
screwing up the outer end of the arm to bring the collar aforesaid tightly against such
face. It is preferred to form lugs at such outer face below or behind which the nut
or collar may be screwed up; or to form a rebate in such face into which the nut or
collar may be screwed up, in order to afford complete security against the fastener
being unfastened by means of a knife blade or other instrument in the manner above
described.
This invention will be clearly understood on reference to the accompanying
drawings, of which those on sheet 1 illustrate a window sash fastener constructed
according to one modification of this invention, and those on sheet 2 a window sash
fastener constructed according to another modification of this invention.
Referring first to the drawings on sheet 1, figure 1 is a plan, and figure 2 a side
elevation of a window sash fastener constructed according to this invention.
Figure 3 is a back elevation of the mounting on the inner sash (that is, as seen

page_text: from the interior of a room), and figure 4 a section of such mounting taken on
line of figure 3. The same letters of reference indicate corresponding parts
throughout these views. An arm A, having a screwed outer end A' and a nut B
thereon, is pivoted to a mounting C which is, preferably, pivoted or swivelled within
a plate fixed to the outer meeting bar D. A mounting E is riveted or otherwise
fixed to (or may be formed with) a plate E¹ fixed to the inner meeting bar D',
and a slot a is formed down from the top of the mounting E. A rebate bb is
formed in the back face of the mounting E, as shewn, and lugs c c are formed out
from such face on each side of the upper part of the slot. The sashes are fastened,
and also drawn tightly together, by first turning down the arin A so as to bring the
part A into the slot a, and then screwing up the nut B tightly into the rebate b b
and below the lugs c c, as shewn by figures 1 and 2; and the sashes are unfastened by
screwing back the nut and raising the arm into the position shewn by broken lines,
figure 2, or by first raising it out of the slot a and then turning it into the position shewn
by broken lines, figure 1, such latter movement causing also the axial turning of the
pivoted mounting C. The arm A is knuckle or knee-jointed to the mounting C so as to be
stopped in a position slightly inclined towards the glass in the outer sash when raised
up and pushed back, as shewn by broken lines figure 2, and when so pushed back it
is prevented from being shaken forwards and fouling against the inner sash. The
nut B has a milled rim or edge d to enable it to be readily turned by the finger and
thumb, and the outer end of the screw-thread on the part A¹ of the arm is slightly
riveted up to prevent the nut from dropping off the arm.
There is no need to provide both the lugs cc and the rebate b b on the same
mounting E, as either will securely prevent the arm from being moved out of the slot a
when the nut is screwed up; and it is not absolutely essential that either the lugs or
rebate be employed for this purpose, as the nut will hold the arm very firmly if
screwed up simply against a plain face of the mounting E, but the employment of
either the lugs or rebate is very much preferred.
Referring now to the drawings on sheet 2 herewith, figures 5 and 6 are corre-
sponding views, respectively, to figures 1 and 2, but shew a sash fastener constructed
according to this invention, in which the arm of the fastener is moved sideways into
a sideway slot in the mounting fixed to the inner sash. Figure 7 is a back elevation
of such fastener (as seen from the interior of a room). In figures 5 and 6 the arm
is shewn to be fastened and in figure 7 to be turned back. The parts in these views
corresponding to those shewn by the views on sheet 1 are similarly lettered. An
arm A is pivoted within a mounting C fixed to the outer sash so as to be capable of
being turned in a horizontal plane, and a slot a is formed in from one side of a
mounting E fixed to the inner sash. This fastener is substantially the same as the
fastener previously described, except that the arm A is turned sideways into a slot a
in the mounting E, instead of downwards. In figure 5 the arm is shewn by broken
lines as turned backward into its unfastened position, and the heel of its pivoted
end, preferably, engages with a spring e after the manner common in ordinary sash
fasteners, so that when the arm is turned back it will be retained in such position by
the spring with sufficient force to prevent it shaking forward and fouling with the
inner sash.
It will be obvious that, in lieu of the screwed part A¹ of the arm A, and nut B,
a part may be formed with a screwed shank and with a collar near its outer end
correspondingly shaped to the nut, and the arm A be internally screwed to receive
the shank, and the fastener be tightened up to draw the sashes together by screwing
up such shank to bring the collar against the face of the mounting E or into the
rebate b b therein.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, I declare that what I claim is :-
1. In a window sash fastener, a mounting for fixture to the inner sash, and having
an open-ended slot formed therein, in combination with an arm so connected with a
mounting for fixture to the outer sash as that when the parts are properly fixed in

page_text: place it may be readily moved vertically or sideways (or, if desired, in an inclined
direction) to bring its outer end into the slot, such end being so constructed that it or
a part thereon may be moved inwards and tightened against the outer face of the
mounting on the inner sash, substantially as and for the purposes described.
2. In a window sash fastener, the combination of an arm pivoted to a mounting
for fixture to the outer sash, and having a suitable nut screwed on its outer end,
with a mounting for fixture to the inner sash and having an open-ended slot formed
therein, all constructed and operating substantially as and for the purposes described.
3. In a window sash fastener constructed substantially in the manner described in
the last preceding claim, lugs behind or heneath which the nut referred to in such
claim is or may be screwed up, and in combination therewith, or alternatively thereto,
a rebate in the outer face of the mounting for fixture to the inner sash into which
rebate the nut is or may be screwed up, substantially as and for the purpose
described.
4. The window sash fastener substantially as described with reference to the
drawings on sheet 1 herewith.
5. The window sash fastener substantially as described with reference to the
drawings on sheet 2 herewith.
6. In a window sash fastener, the combination of an arm A with a nut B thereon,
a mounting C for fixture to the outer sash, and a slotted mounting E for fixture to
the inner sash; and also such parts in combination with lugs c c and rebate b b upon
or in the mounting E, or with either such lugs or rebate, substantially as and for the
purposes described and shewn.
7. In a window sash fastener, constructed in the manner referred to in the last
preceding claim, the mounting Ć pivoted to a plate C for fixture to the outer sash,
substantially as and for the purpose described and shewn by figures 1 and 2 of the
drawings herewith.
8. In a window sash fastener constructed with an arm connected with the outer
sash and operating in combination with a slotted mounting on the inner sash sub-
stantially in the manner above described, the substitution for the screwed outer end of
such arin, and nut thereon, hereinbefore described, of a part having a screwed shank
and provided with a suitable collar near its outer end constructed correspondingly to
the nut, and of an internally screwed part in the inner end of the arm to receive such
screwed shank, substantially as and for the purpose described.
Dated this Twenty third day of June 1887.