Year: 1897

page_text: Date of Application, 26th Jan., 1897-Accepted, 27th Feb., 1897
We, WILLIAM WALLACE SMITH, and JACOB MILLROY ISGRIG, both of Traverse City,
in the County of Grand Traverse, and State of Michigan, United States of America,
Gentlemen, 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 sash locks and has for its object to provide a simple, cheap
and reliable sash fastener and lock whereby either or both of the sashes may be raised
and lowered at will and held at any point of elevation. The principal objects of the
present invention are first, to provide in connection with a clutch carried by one of
the sashes and engaging a vertically-disposed rod, a positive lock whereby the sash
may be firmly locked either when closed or partially open, access being had to such
lock only from the interior of the building; second, to arrange the supporting rod
between the vertical planes in which the sashes slide whereby it is out of the way and
does not interfere with the curtains or other hangings of the window, nor detract
from the appearance of the window. Other objects and advantages of the invention
will appear in the course of the subjoined description.
The invention consists in certain novel features and details of construction and
arrangement of parts, as hereinafter fully described, illustrated in the drawings and
finally pointed out in the claims hereto appended.
In the accompanying drawings:-
Fig. 1 is a front elevation of a window showing the improvement applied to the
upper and lower sashes thereof.
Fig. 2 is a vertical transverse section through the same.
Fig. 3 is an enlarged detail perspective view of the lower sash fastening.
Fig. 4 is a similar view of the same fastening with the parts thereof disassociated.
Fig. 5 is a detail perspective view of the upper sash fastener.
Fig. 6 is a similar view of the same fastening with the parts thereof disassociated.
Similar numerals of reference designate corresponding parts in the several figures.
of the drawings.
In carrying out the present improvement we prefer to use fasteners of different
constructions for the upper and lower sashes respectively, the purpose of which will
be apparent as the description proceeds. Both the lower sash 1, and the upper sash 2,
are supported upon and by means of a depending rod 3, arranged centrally of the
window casing and screwed at its upper end into a keeper 4 secured to the under
surface of the top bar of the window-frame. The rod 3 is arranged in a plane
between the upper and lower sashes so that the inner sash slides in front of said rod
and the outer sash in rear of the same. Upon the upper surface of the top bar of the
lower sash is secured a plate 5 having at its rear edge an opening through which the
rod 3 extends. At or near the center of the plate, the metal is struck up, as
indicated at 6, to form lips or bearings beneath which extend the lateral projections 7 of
a clutch 8. By this construction the clutch is pivoted intermediate its ends on the
plate 5, the outer end of the clutch being projected beyond the top rail of the sash
to form a finger hold, and the inner end thereof being formed with a perforation by
which it embraces the rod 3. The fingerhold of the clutch is normally depressed
and the perforated end thereof normally elevated by means of a leat spring 9,
secured to the underside of the clutch 8 and bearing at its free end against the

page_text: plate 5.
This spring is held in place by means of a lip 10 struck out from the
middle of the clutch 8, the end of the spring being inserted under such lip and
clinched.
At its rear edge and adjacent to the opening for the rod 3 the plate 5 is provided
with an upturned edge forming an incline or cam 11. 12 indicates a lock which
consists of a flat piece of metal having an opening therein through which passes the
rod 3, and also provided with an upturned portion or thumb-piece 13 by means of
which it may be rotated. By turning the lock plate in the proper direction it is
caused to travel upward upon the cam 11 and to engage beneath the perforated end
of the clutch 8, so that such end of the clutch is prevented from descending and
releasing its hold upon the rod 3. By means of this construction the lower sash
may be locked when all the way down, or it may be partially raised and then locked
and when locked it will be impossible either to raise or lower the sash except by
manipulating the lock plate from the inside.
The fastener for the upper sash consists of a plate 14, the upper portion of which
is divided and the divided portions thereof bent to form bearings 15 for the laterally
and oppositely projecting trunnions 16 of a clutch 17 having at its swinging end
an opening through which is received the rod 3. The main body or central portion
of the plate 14 is bent to form an eye or loop 18, which embraces the rod 3 and
between this eye or loop and the lower surface of the clutch 17 is interposed an
expansive coiled spring 19 surrounding the rod 3. and serving to hold the clutch
normally in engagement with the rod 3. By depressing the end of the clutch 17, the
upper sash may be readily raised or lowered, and when the clutch is released, the
sash will remain where it is left. It is unnecessary to manipulate the clutch for
raising the sash as it may be pushed all the way up until it reaches and abuts
against the top bar of the window frame where it will afterward remain. In the
same manner the lower sash may be elevated without manipulating its fastener or
clutch. When it is desired, however, to lower either of the sashes, their respective
clutches must be manipulated and released from engagement with the rod 3.
When the devices hereinabove described are used on large sashes, two or more
rods 3 and a proportionate number of clutches may be employed. All parts of the
clutches and their retaining plates, etc., are designed with a view to stamping the
same out of sheet metal, the said parts not requiring any shaping up or finishing
after leaving the dies. The fasteners are simple, cheap and practical and the sashes
are always held squarely within the frame, they are well balanced, and as a result there
is no friction or binding of the same within the window frame. The locking device
is a simple and reliable one and enables the sash to be locked in an elevated as well
as a closed position. Changes in the form, proportion and the minor details of
construction may be resorted to without departing from the spirit or sacrificing
any of the advantages of this invention.
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. In a sash lock, the combination with a rod secured within the window frame, as
described, of a clutch, comprising a stationary plate attached to the window sash, a
pivoted clutch proper fulcrumed on said plate, and a lock plate arranged between the
stationary plate and the pivoted clutch for locking said clutch in engagement with
the rod, substantially as described.
2. In a sash lock, the combination with the rod secured within the window frame
as described, of a clutch secured to the window sash, said clutch comprising a
stationary plate attached rigidly to the sash and having an opening for the rod and
also provided adjacent to said opening with an inclined lip or cam surface, a pivoted
clutch proper fulcrumed intermediate its ends upon said plate and provided with an
opening for said rod, and a vibratory lock plate having an opening for the rod and
adapted to co-operate with the said inclined lip or cam surface for locking the pivoted
clutch, substantially in the manner and for the purpose described.

page_text: 3. In a sash fastener, the combination with a vertical rod secured within the
window casing as described, of a clutch attached to the window sash and engaging
said rod, said clutch comprising a plate having its main body bent to form a loop.
or eye, or provided with a loop or eye for the rod, the said plate being also divided
and having its divided portions bent to form bearings, the clutch proper having
oppositely projecting lateral trunnions arranged in said bearings and also having an
opening for the rod, and a spiral spring surrounding the rod and interposed
between the loop or eye of the plate and the clutch proper, substantially as and for
the purpose described.
1
1000
BOULT & WADE,
Agents for the Applicants..