Improvements in Window Fasteners.
Year: 1899

page_text: Date of Application, 14th Mar., 1899
Complete Specification Left. 28th Dec., 1899-Accepted. 17th Feb.. 1900
Date of Application, 14th Mar., 1899
Complete Specification Left. 28th Dec., 1899-Accepted. 17th Feb.. 1900
PROVISIONAL SPECIFICATION.
Improvements in Window Fasteners.
I, PERCY RICHARD JULIUS WILLIS, of Fairfield, Kingston-on-Thames, in the
County of Surrey, Consulting Engineer, do hereby declare the nature of this
invention (a communication to me from abroad by Frank J. Lowery and Frank
E. Billings, both of Fort Fairfield, Maine, U.S.A., Inventors,) to be as follows:-
This invention relates to certain new and useful improvements in window
fasteners; the object of the invention being to provide means whereby window
sashes can be raised and secured in any desirable position.
The invention comprises a suitable metal casing recessed into the window
frame. The casing contains a cog-wheel rotatably mounted in such position that
its periphery projects through an opening in the end of the casing and meshes
with a rack secured to the side-bars of the sash.
A spiral spring is secured to the pivot of the wheel and to its circumferential
flange.
A spring-actuated bolt, having a forked end adapted to engage the teeth of the
rack when the bolt is shot, is slidably mounted in the casing, and can be recipro-
cated by means of a push-button to disengage it from the teeth of the rack.
The bolt has an extension which engages the teeth of the wheel at the same
time that the forked end of the bolt engages the rack.
.. 1000
Improvements in Window Fasteners.
I, PERCY RICHARD JULIUS WILLIS, of Fairfield, Kingston-on-Thames, in the
County of Surrey, Consulting Engineer, do hereby declare the nature of this
invention (a communication to me from abroad by Frank J. Lowery and Frank
E. Billings, both of Fort Fairfield, Maine, U.S.A., Inventors), 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 new and useful improvements in devices for raising
window-sashes; and it consists in the provision of a device whereby the sash
may be automatically raised by operating a push button allowing the window
to be raised, means being provided for holding the sash at any height and locking
it in such position.
More specifically the invention consists in the provision of a sash having a
rack-bar upon one of its vertical strips, the teeth of which rack bar are designed

page_text: to mesh with the teeth of a spring actuated cog-wheel mounted in the window
casing, and a locking device which holds the sash at any desired position and
also prevents the rotation of the spring actuated cog-wheel should the sash
be removed. for any purpose.
To these ends and to such others as the invention may pertain, the same
consists, further, in the novel construction, "combination, and adaption of the
parts, as will be hereinafter more fully described and then specifically defined in
the appended claims.
citato.. i
My invention is clearly illustrated in the accompanying drawings, which,
with the letters of reference marked thereon form a part of this specification, and
in which:-
TA
Figure is an elevation of the invention, parts being broken away to better
illustrate the construction. Fig. 2 is a sectional view shewing the construction
of the push button and its connections.
Reference now being had to the details of the drawings by letter, A designates
the window-sash, which has seated in one of its vertical strips, on its outside
adjacent to the window casing, a rack-bar B. The teeth of this rack-bar are flush
with the edge of the sash, as shewn, and not visible when the sash is in its case.
in the window-casing. Sealed in a recess in the casing of the window is a hollow
cog-wheel C, in which a coiléd spring D is located, one end of which spring is
secured to the pivot D¹, on which the cog-wheel is mounted, while the other end
of the spring is secured to the inside of the flange of the wheel, as at d. This
cog-wheel is so located that its teeth will extend out beyond the facing of the
casing and mesh with the teeth of the rack, whereby, as the wheel is rotated in
one direction or another, the sash will be raised or lowered. Mounted in the
inclosed casing E, containing the cog-wheel, is a sliding lock-plate F, the outer
forked end F of which extends through the window-casing adjacent to the rack-
bar, and the said forked end is designed to engage with the teeth of the rack-bar
and hold the sash at a given height, not allowing the sash to be raised or lowered
from its locked position until the locking slide is withdrawn from the teeth of
the rack-bar.
In order to prevent the unwinding of the cog-wheel in case the sash should be
removed for any purpose, we provide on the sliding locking member a projection K
which is designed to engage with the teeth of the cog-wheel when the locking
member is at its farthest outward throw. To guide the locking member, which
is thrown forward by means of the coiled spring N, in its longitudinal move-
ments, its forked ends extend through apertures in the window casing, while a
block a mounted on the broad face of the locking member, bears against the
inside face of the cover to the casing inclosing the cog-wheel. This casing
may be made of metal and set into the window-casing similarly as door-locks are
inserted in the door casing.
The push button R (shewn in the detail sectional view, has an L-shaped
shoulder with a slanting bracket edge, as seen at R', and the lower end of said
push-button extends through an aperture S in the wall of the casing containing
the cog-wheel and sliding lock, while the other end of the push-button extends
through the opposite wall of the casing. The sliding locking member is apertured
as at r, through which aperture the push-button passes, with the slanting
edge of the push-rod bearing against one end of the aperture in the locking
member, while the longitudinal straight edge of the push-rod or button engages
the edges of the apertures in the opposite walls of the casing enclosing the cog-
wheel, whereby as pressure is applied to the outer end of the push button or rod
the slanting edge of the push-button will bear against the end of the aperture
in the locking member and draw the same back under the tension of the spring
connected to said member and the forked end of the locking member will be
withdrawn from engagement with the rack-bar and allow the window sash to be
raised or lowered.
In order to allow the window sash to raise and lower easily, anti-friction rollers

page_text: may be placed in the window casing on the opposite side from that in which the
cog-wheel turns.
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 device for raising and locking a window sash the combination with the
sash, the rack-bar mounted thereon, the cog-wheel having teeth meshing with
the teeth of said rack-bar, the spring carried by the cog-wheel, the spring
actuated locking member having a forked end designed to engage with the
teeth of the rack-bar, and a projection designed to engage with the teeth of the
cog-wheel, and a push-button for drawing the locking member out of engagement
with the teeth of the rack-bar and cog-wheel, as set forth.
(2) In combination with the sash, the cog-wheel, the locking member having
a forked end, the forks of which pass through apertures in the window casing,
the block secured to the face of the locking member, and the push-button, all
substantially as shewn and described.
Datad this Ofth day of Cantambor 1900
P. R. J. WILLIS,
Applicant.