An Improved Sash Fastener.
Year: 1889

page_text: Date of Application, 17th Aug., 1889
Complete Specification Left, 28th Sept., 1889-Accepted, 9th Nov., 1889
PROVISIONAL SPECIFICATION.
An Improved Sash Fastener.
I, THOMAS ROUTLEDGE, of No. 34, Council Street, Vine Street, Hulme, Manchester, in
the County of Lancaster, Brassfounder, do hereby declare the nature of this invention
to be as follows :-
The sash fastener forming the subject of this invention comprises two plates or
parts one to be fixed on each sash. To one of these plates is pivotted an arm provided
with a spring catch adapted to engage with the ratchet teeth of a rack on the
other plate or part with which it is advantageous the rack should be cast in one.
A suitable construction of spring catch is as follows. A bolt comprising a nose and
stem which may be cast in one piece is loosely mounted in a hole in the arm of the
fastener and is provided with a coiled spring abutting against a suitable ring or stop
between this ring
screwed or otherwise suitably fixed to the said arm; the spring
or stop and the nose, and surrounds the stem, the arrangement being such that the
bolt has a constant tendency to engage with the teeth of a curved rack when the arm
is over the other sash.
The nose is (as I prefer to make it) bevelled on one edge so as to allow it to slide
readily in one direction over the teeth of the rack. The other end of the bolt is
formed as, or is provided with, a knob or handle to allow of the spindle being pulled
back against the action of the spring out of engagement with the teeth of the rack.
T: 17th dox of Angst 1889
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Sash Fastener.
I, THOMAS ROUTLEDGE, of No. 34, Council Street, Vine Street, Hulme, Manchester,
in the County of Lancaster Brassfounder, 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:-
A sash fastener according to this invention comprises two plates or parts one to be
fixed on each sash. To one of these plates is pivotted an arm provided with a spring
catch adapted to engage with the ratchet teeth of a rack on the other plate or part
A suitable construction
with which it is advantageous the rack should be cast in one.
of spring catch is as follows:- -A bolt comprising a nose and stem, which may be cast
in one piece, is loosely mounted in a hole in the arm of the fastener and is provided
with a coiled spring abutting against a suitable ring or stop screwed or otherwise
suitably fixed to the said arm; the spring is between this ring or stop and the nose,
and surrounds the stem, the arrangement being such that the bolt has a constant
tendency to engage with the teeth of a curved rack when the arm is over the other
sash. The nose is (as I prefer to make it) bevelled on one edge so as to allow it to
slide readily in one direction over the teeth of the rack. The other end of the bolt is
formed as, or is provided with, a knob or handle to allow of the spindle being pulled
back, against the action of the spring, out of engagement with the teeth of the
rack.
A sash fastener according to my invention is illustrated on the accompanying sheet
of drawings.

page_text: piau, anu
Fig. 3 a horizontal section.
a b are two plates to be fixed to the upper and lower sashes a¹ 6¹ respectively of a
window as shown. To the plate a is pivotted an arm c which at its outer end carries
a spring catch that can engage with the ratchet teeth d of a rack e carried by the
plate b. The plate bis in the example shown, of cast metal, and the rack e is cast in
one piece therewith.
The spring catch comprises a bolt having a stem 9 and nose h, loosely mounted in
a recess or chamber i in the arm c. Around the stem g is a coiled spring; one end
of which abuts against a shoulder at the outer end of the hole or chamber i and the
other against a collar j on the bolt g. As will be readily seen the nose h is constantly
pressed against the ratchet teeth d when the arm c is in position to lock the window
sashes, but can be withdrawn from contact therewith by means of a knob or handle k
when it is desired to move the arm c into its inoperative position to release the
window sashes. The knob or handle k is secured to the stem g in any suitable
manner as for example by screwing as shown. The nose h is bevelled on one edge
to allow of its readily passing over the ratchet teeth d in one direction. is a spring
that serves to hold the arm c in its locked or unlocked positions. It is secured to a
flange m on the plate a and acts against an anti-friction roller n mounted on the inner
end of the arm c.
Having now particularly described and ascertained the nature of the 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 two plates or parts each adapted to be fixed to a window
sash and to one of which is jointed or pivotted an arm carrying a spring catch that
can be engaged with or disengaged from ratchet teeth on the other plate or part
substantially as hereinbefore described for the purpose specified.
2. My improved sash fastener substantially as described and shewn.
W. Lloyd Wise,
T. ROUTLEDGE.
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.