Improvements in Fastenings and Tighteners for Sash Windows to Obtain Additional Security and to Prevent the Shaking of Window Sashes.
Year: 1888

page_text: Date of Application, 28th Sept., 1888
Complete Specification Left, 17th June, 1889-Accepted, 27th July; 1889
PROVISIONAL SPECIFICATION.
Improvements in Fastenings and Tighteners for Sash Windows to
Obtain Additional Security and to Prevent the Shaking of
Window Sashes.
We, JOHN BRIMLOW RUSHTON, of 12 Brighton Street, Barrow-in-Furness, in the
County of Lancaster, Roll Turner, and THOMAS ROBINSON ATKINSON, of 11 St. Luke
Street, Barrow-in-Furness aforesaid, Machinist, do hereby declare the nature of this
invention to be as follows:-
In a fastening or tightener for windows sliding shutters and the like according to
this invention pressure is brought to bear against one or both of the sashes or sliding
parts by an eccentric or cam which turns on a pivot and is provided with a handle
lever or tail piece by which it can be manipulated. Such a fastening (or two or
more such fastenings) may be fitted to the frame in which a sash slides and exercises
its (or their) pressure on the sash and thus prevents the shaking of the sashes. Or it
(or they) may be fitted to one sash and exercise a pressure on the other sash.
It is desirable to fix a plate of metal or other enduring substance to that part of
the sash to which the pressure is applied. In some cases we make this plate with a
lip flange or overhang which partly envelopes the cam or eccentric and affords an
additional security against the window being opened. This arrangement is specially
applicable when the fastening is fitted to the cross bar of the window.
In the case of the side fastenings or tighteners, additional security is obtained by
making the plate with a small rib to act on the one side of the tightener that when
the pressure is against the plate the rib cannot pass.
:
When pressure is applied to the lower sash of a window by fastenings according to
this invention it will usually be found that a part of it is transmitted to the upper
sash and holds that sash securely in its slide. It will be evident the fastenings
according to this invention can be variously constructed without departure from the
essential features of the invention.
تيمم
1
1000
W. LLOYD WISE,
Per J. G. S.,
46, Lincoln's Inn Fields, London, W.C., Agent for the.Applicants.
COMPLETE SPECIFICATION.
Improvements in Fastenings and Tighteners for Sash Windows to
Obtain Additional Security and to Frevent the Shaking of
Window Sashes.
We, JOHN BRIMLOW RUSHTON, of 12, Brighton Street, Barrow-in-Furness, in the
County of Lancaster, Roll Turner, and THOMAS ROBINSON ATKINSON, of 11, St. Luke
Street, Barrow-in-Furness aforesaid, Machinist, 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 :-
In a fastening or tightener for windows and sliding shutters and the like according
to this invention pressure is brought to bear against one or both of. the sashes or
sliding parts by an eccentric or cam which turns on a pivot and is provided with a
handle, lever, or tail piece, by which it can be manipulated.
Such a fastening or tightener (or two or more such fastenings or, tighteners) may
be fitted to the frame in which a sash slides and exercise its (or their) pressure on the
sash and thus prevent the shaking of the sashes. Or it (or they) may be fitted to
one sash and exercise a pressure on the other sash.

page_text: For side fastenings a plate of metal or other enduring substance provided with a
curved projection is fixed to that part of the sash to which the pressure is to be
applied.
When pressure is applied to the lower sash of a window by fastenings constructed
according to this invention it will usually be found that a part of it is transmitted to
the upper sash and holds that sash securely in its slide.
Referring to the annexed sheet of illustrative drawings Fig. 1. is an elevation
partly in section of one form of a window sash fastening or tightening device
according to this invention shewn in its inoperative position.
Fig. 2. is a similar view shewing the device in its operative position for fastening
or tightening a window sash.
Fig. 3. is a sectional plan on the line a b of Fig. 2.
A is the side bar of the window sash capable of sliding up and down in the usual
manner in the groove formed by the guides or inner and outer portions of the window
frame B B¹. Upon a pin or pivot C screwed into or otherwise fixed to the inner
part B of the frame B B (it may be by means of a plate D let into and fastened to
the frame by screws as shewn) is mounted a cam or eccentric E which is capable of
being rotated about the pivot Ċ by means of the handle, lever, or tail piece F.
When the tightener or fastener is in its loose or inoperative position (Fig. 1.) the
handle F is turned down so that the longest radius of the cam or eccentric E is away
from the window sash A.
To tighten the sash the handle F is turned upward in the direction of the arrow in
Fig. 1. so as to bring the longest radius of the cam or eccentric E between its pivot C
and the window sash A as shewn in Fig. 2. thereby pressing the sash A firmly
against the outer part B¹ of the window frame. By this means the window sash A is
prevented from being raised as well as prevented from rattling in its frame. G is a
metal plate let into and fastened to the window sash with the object of receiving the
pressure of the cam or eccentric and thus protecting the wood-work of the sash; this
plate is provided with a curved projection G against which the cam or eccentric
bears when in the position shewn in Fig. 2, the projection affording increased security
against the window being opened.
Although the improved window fastener or tightener E is shewn attached to the
window frame B it may. with equal advantage be so attached to the window sash A
that, when rotated into its operative position, it shall press against the window
frame.
When the cam or eccentric is fastened to one sash and exercises its pressure
against the other sash the plate provided to receive the pressure may be formed
with a lip, flange, or overhang, which partially covers the cam or eccentric when
in its operative position and affords an increased security against the window being
opened. This arrangement is especially applicable when the fastening and tightening
device is to be fitted to the upper cross bar of one of the window sashes.
Such an arrangement of combined window fastener and tightener is shewn in
Figs. 4, 5, & 6, Fig. 4. being a sectional elevation, Fig. 5. a plan and Fig. 6. a front
elevation.
E is a cam or eccentric provided with a handle, lever, or tail piece F, and
pivotted at C to a metal plate D which is suitably fastened to the top side of the
upper cross bar H of the lower or inner window sash of an ordinary window.
G is a metal plate fastened to the outer or upper window sash H¹. When the
cam or eccentric E is rotated by means of its handle F into its operative position
(shown in full lines) so that the longest radius of the cam comes between the pivot C
and the metal plate G the sash H will become firmly pressed outwards in the
direction of the arrow against the window frame (not shown) the pressure being
taken by the upwardly bent part G* of the plate G.
The plate G is provided with a lip or flange I which partially envelopes the cam
on its upper side when the cam is rotated into its operative position; the said lip
or flange I serves to prevent either or both of the window sashes H H from being
moved up or down.

page_text: In order to prevent the production of a draught between the two window sashes
caused by their being pressed too far apart by the action of the cam E secured to
one on the plate G secured to the other, as may be the case where the sashes
loosely fit the window frame, a fastening or tightening device of the kind shewn in
Figs. 1, 2 & 3 may be employed as shewn in Fig. 10 to press and hold the sashes
close together, the cam E and plato G secured to the upper sides of the sashes H H¹
serving to prevent these sashes being raised or lowered relatively to each other.
Figs. 7, 8 & 9 show a fastener or tightener that acts as a wedge. Fig. 7 is an
elevation showing the device in its inoperative position; Fig. 8. a similar view
showing it in its operative position and Fig. 9. a sectional plan.
E is a cam or eccentric pivotted at C to the side bar A of an ordinary window sash
and capable of being rotated about the said pivot by means of a handle, lever, or tail
piece F.
Part of the surface of one side of the cam E is bevelled or thinned off in such a
manner that the thickness of the cam diminishes from its pivot to its circumference as
indicated at El by shading with parallel lines (see Figs. 7 & 8).
The cam E is arranged on its pivot C in such a manner that the said bevelled part
lies away from the window frame B when the tightener is in its inoperative position.
By rotating the cam E so as to bring the bevelled portion E towards the window
frame as shown in Fig. 8 this bevelled portion will, by reason of the eccentricity of
the cam,
enter the space between the inner part B of the window frame B B' and the
inner surface of the side bar A of the window sash and will tend to force the sash
away from the inner part B and against the outer part B' of the window frame
(shown more clearly in Fig. 9) thereby effectually preventing movement and
rattling of the sash.
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 :-
1. A tightening and fastening device for windows, sliding shutters and the like
comprising a cam or eccentric, a pivot on which the cam or eccentric turns, and a
handle or lever by which it is operated, the said device being designed to be applied
to one part of a window sash or to the window frame, the arrangement being such
that when so applied and the cam is turned into its operative position it will exert a
pressure against the window frame or against the other window sash, as the case may
be, substantially as hereinbefore.described.
2. The use in combination with a tightening and fastening device of the kind
referred to in the preceding claim of a plate such as G formed with a curved
projection G substantially as herein described for the purpose specified.
3. The combination with a tightening and fastening device of the kind referred to
in claim 1. of a plate such as G having a lip or flange I which overlaps or partly
overlaps the cam when this is in its operative position and locks the two sashes
together substantially as described with reference to Figs. 4. 5. & 6 of the drawings
annexed.
4. The improved window tightener consisting of a cam or eccentric formed with
a bevelled or wedge shaped part and pivotted to the window sash in such a manner
that when rotated about its pivot the wedge shaped part of the cam may be caused to
pass between the window sash and the window frame substantially as described with
reference to Figs. 7, 8 & 9 and for the purpose specified.