Improvements in Window Sash Fasteners.
Year: 1892

page_text: Date of Application, 30th Nov., 1892
Complete Specification Left, 3rd Feb., 1893-Accepted, 11th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Window Sash Fasteners..
I FREDERICK JOHNSON ALLISON of 23 Gordon Street, Plaistow, in the
County of Essex, Paint Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to a fastener for window sashes so constructed as to be an
effectual lock for the closed sashes and at the same time affording means whereby
the closed sashes can be drawn together to prevent them from rattling or shaking.
On the rear sash rail I fit a plate to which a screw threaded rod is pivotted on a
vertical axis. Over this rod works a nut of any suitable form and furnished with a
collar or flange at a convenient distance from the end. On the front sash rail I
fix a plate carrying a box in which is pivotted a counterweighted piece in the path
of the rod on the back plate and adapted to be raised by the said rod when the
latter is turned on its pivot, and falling again under the action of gravity after the
rod has passed. In rear of the counterweighted piece is a projection so that the
counterweighted piece can only be turned in one direction.
When the screw threaded rodj is turned into a position at right angles to the
meeting line of the sashes, the nut thereon is screwed firmly up and entering
between the screwed rod and the counterweighted piece, will prevent the latter
from being raised. On further screwing up the nut the shoulder thereon will bear
against the front of the box on the front sash rail, and in this manner will draw the
two sashes closely together.
This 20th day of November 1800'
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Window Sash Fasteners.
I FREDERICK JOHNSON ALLISON. of 23 Gordon Street, Plaistow, in the
County of Essex, Paint Manufacturer, 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:-
This invention relates to a fastener for window sashes so constructed as to be an
effectual lock for the closed sashes and at the same time affording means whereby
the closed sashes can be drawn together to prevent them from rattling or shaking.
In the accompanying drawings
Figure 1 is a perspective view of part of a window frame with a sash fastener
fitted thereto, constructed in accordance with this invention, and shewing the
position of the parts when the lever arm A is being pushed back towards the back
sash B, or is being drawn forward into the locking position, e. :-at right-angles to
the meeting line of the sashes;
"
Figure 2'is a plan view of part of a window frame with the fastener fitted thereto,
and shewing the nut 'D screwed tightly up so as to lock the parts in position ;
Figure 3 is an elevation of the window fastener as seen from the interior. of
the room shewing the lever arm A¨ pushed back parallel with the meeting line of
the sashes;
in 2. and

page_text: The same letters of reference are used to indicate the same or corresponding
parts in all the figures of the drawings.
On to the rear sash rail B I screw or secure in any other suitable manner a
plate E to which a lever arm A is pivotted on a vertical axis. The outer end of
this lever arm A is screwthreaded and over this works a nut D the interior of which
is correspondingly threaded with a female thread, and the exterior provided with a
milled edge d or other means for affording a grip for the finger and thumb of the
manipulator. The inner end of the nut D is provided with a shoulder or flange d'
and a cylindrical extension or collar d. After the nut D has been screwed on to
the lever arm A, the end of the latter is turned over as at a or a small flange is
securely fastened to the extremity of said lever arm A to prevent the nut from
being screwed completely off.
On to the front sash rail C, I secure a plate F carrying a box bifurcated or
forked, the top G and bottom G¹ being connected together by the end piece G³,
the space G³ between the top and bottom pieces being sufficient to allow the passage
of the lever arm A. At the end nearest the end piece G² the space G³ is made of
a circular shape and large enough to take the collar d² on the nut D (see Figure 4).
The top piece G of the box is provided with a rectangular slot or aperture passing
completely through the material and between the cheeks g so formed, is pivotted,
on the horizontal pivot G', a weighted piece H whose upper end is large enough
to nearly close the slot or aperture aforesaid. The piece H is so made, or weighted
that it falls by gravity into the position shewn in Figure 4 with the side h³ vertical
or thereabouts, and with its lower end depending into a channel or groove g¹ made
immediately beneath it in the lower part G' of the box. The right side of channel
or groove g¹, as shewn in Figure 4, terminates in an upright wall which thus forms
a shoulder or abutment which prevents the weighted piece H from being turned
over in that direction. The dotted arrow in Figure 4 shews the direction in which
the weighted piece H can be moved; ' is a notch in the upper end h of the
weighted piece by means of which it can be raised when required.
From the foregoing description it will be understood that the weighted piece H
is located in the path of the lever arm A and that when the latter is turned
on its pivot and drawn forward at right angles to the meeting line of the
sashes, that is to say from the position shewn in Figure 3 to that shewn in
Figure 2, the weighted piece will be raised by the lever arm A into the position
shewn in Figure 1, thus allowing the arm A to pass through the space G³ 3
between the top G and bottom G' of the box, and to enter the circular enlargement
at the end of said space.
When there, the lever arm A will be clear of the
weighted piece H, which will then fall by gravitation into its normal position as
shewn in Figure 4. To lock the fastening and to simultaneously draw the sashes
together, the nut D is traversed on the screwed part of the lever arm A towards 4
the meeting line of the sashes until the collar or cylindrical extension d² thereupon
is caused to enter the circular opening at the end of the space G³, and the shoulder
or flange d¹ to bear against the face of the box, as shewn in Figure 2, and in this
manner, the two sashes will be drawn closely together. The curved side of the
weighted piece H is so formed (see Figure 4) that when the collar d' is in between 4
it and the lever arm A, the said weighted piece cannot be turned over on its pivot,
and consequently the fastening is locked. To unlock the fastening, the nut D
is traversed back towards the outer end of the lever arm A into the position
shewn in Figures 1 and 3; the collar d² being now out of the circular end of
the space G³, the weighted piece H can be raised in the direction shewn by the dotted 5
arrow in Figure 4, there being just sufficient room between the curved front h
and the lever arm A to allow the former to pass by the latter and the weighted
piece raised. When this is effected, the lever arm A can be turned on its pivot
and passed out of the box through the space G³ into a position parallel with
the meeting line of the sashes.
I am aware that it has been already proposed to make window sash fastenings
having a screw thread formed on the lever arm which is pivotted to the back
5

page_text: sash, or on a projection thereon, and to provide such lever arm or projection
with a nut or a set screw which can be traversed on or in said screw thread
and caused to enter a box or to bear against an upright or standard on the
front sash for the double purpose of securing and of tightening the sashes. I
am also aware that it has been proposed to make a sash fastener having a
screwed rod which works through a fixed nut secured to the front sash, or which
is fixed to the front sash and furnished with a rotatable nut, said rod when the
sashes are closed, being received in a trough formed in an upright secured to the
back sash and carrying a pivotted piece which automatically locks the rod when in
the trough, the sashes being drawn together by screwing up the rod or its nut, I
shall therefore make no claim to the use, per se, of a screw threaded pivotted rod
carrying a nut, nor to a screwed rod when used in conjunction with a weighted
piece for securing and tightening window sashes.
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. A sash fastener comprising an arm pivotted on the back sash, screw threaded
at its free end, and furnished with a nut which can be traversed on said screw
thread and having a shoulder or flange and a cylindrical extension or collar, a box
fastened to the front sash and containing a weighted piece constrained to turn in
one direction only, and so made as to be locked, and prevented from turning on its
pivot when the nut on the lever arm is screwed firmly against the face of the said
box, substantially as described and shewn and for the purpose stated.
2. In a sash fastener comprising an arm pivotted on the back sash and screw
threaded at its free end and furnished with a nut which can be traversed on said
screw thread and furnished with a shoulder or flange, and a cylindrical extension or
collar adapted to respectively bear against the face and enter a recess in a box
secured to the front sash, a weighted piece pivotted in such box and so shaped and
fitted that when the cylindrical extension or flange on the nut is in the recess in the
box, the said weighted piece is immoveably fixed in position substantially as
described and shewn, and for the purpose stated.
3. My improved sash fastener comprising a screw threaded lever arm and nut
thereon, in combination with a box on the front sash carrying a weighted pivotted
piece operating substantially as and for the purpose hereinbefore set forth and
illustrated in the accompanying drawings.
1.
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.