An Improved Window Sash Fastener.
Year: 1890

page_text: Date of Application, 19th July, 1890
Complete Specification Left, 19th May, 1891-Accepted, 4th July, 1891
PROVISIONAL SPECIFICATION.
An Improved Window Sash Fastener.
1, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, (a communication to me from abroad by Isaac Jenkins
of Oswego, New York, U.S.A. Inventor,) do hereby declare the nature of this
invention to be as follows: —
This invention has reference to improved means for fastening that kind of window-
sash which opens upwards and downwards, and in common use.
The invention consists of a metal casing, which is let into the window-framework
in such a manner that it is flush with the bottom of the slots in which the sash
moves. At the side of one of these slots two levers project, which are connected
with two rods, which extend horizontally from one slot to the other; and are bent
suitably at right angles, their ends being again bent so as to form bolts which
project upwards into the slots and into suitable bolt holes made in the edge of the
window-frame. Suitable springs coiled around the rods aforesaid keep the bolts in
their upward position. When one of the projecting knobs aforesaid is pushed in by
the finger, the rod is rotated, and its other end forming the bolt is likewise drawn
into the casing and beneath the surface of the slot in which the sash works, the
sash being free to be opened. Two of these bolts and press knobs are provided, one
for the upper sash, and one for the lower sash.
Dated this 10th day of July 1890
J. P. BAYLY,
Applicant.
COMPLETE SPECIFICATION.
An Improved Window Sash Fastener.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a
communication to me from abroad by Isaac Jenkins, of Oswego, New York, U.S.A.
Inventor,) and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The object of this invention is to render the sash-lock capable of releasing both
the upper and lower sashes separately; also, to adapt the sash-lock to be locked
either in the position for releasing the sash or locking the same, as may be desired;
also, to adapt the sash-lock to be adjusted to take up the wear of some of its
working parts and to regulate the degree of the movement of the locking-arms;
and, furthermore, to protect the sash from wear and abrasion at the points of the
engagement of the sash-lock with the sash.
To that end the invention consists in the improved construction and combination
of parts hereinafter fully described, and specifically set forth in the claims.
In the annexed drawings,
Figure 1 is a face view of that portion of the window-jamb to which the sash-
lock is attached.
Figure 2 is a view of the inner end of the sash-lock.
Figure 3 is a face view of the reverse side of the sash-lock.
Figure 4 is a transverse section on line z z, Fig. 1.
Figure 5 is an edge view of the section of the sash which is provided with the
grooves and stops for the engagement of the sash-lock.
Figure 6 is a sectional side view of the locking-arm engaged with the sash.
DQ17

page_text: Figure 7 is a detached perspective view of the sash-bolt.
Figure 8 is a detached perspective view of a modification of the push-pin and its
connection with the crank-arm of the sash-bolt, and
Figure 9 is an enlarged side view of the push-pin and its supporting-plate.
Similar letters of reference indicate corresponding parts.
A represents the jamb of the window-casing; B, the so-called "stop" secured to
said jamb at the inner side of the lower sash, and D the dividing-strip, which forms
at opposite sides thereof the two guides for the upper and lower sashes S S¹.
n denotes an elongated metallic case formed with right angular extensions n¹ n¹
in opposite directions from opposite ends of said case. This case, with its said.
extensions, is rigidly secured in a mortise formed in the jamb of the window-casing
so as to be flush with the latter, the case n being disposed horizontally, and thus
having the extensions n' n' vertical, one upward and the other downward.
In the case n are journalled the two rocking sash-bolts a a, one of which is formed
with an upwardly extending locking-arm b, which is covered by the upward case-
extension n', and terminates with the dog, projecting from the face of said case-
extension, and the other sash-bolt a is formed with a similar downwardly-extending
locking-arm band similar dog b₁, and covered by the downward case-extension n.
The inner ends of the sash-bolts project through the inner wall of the case n and
terminate with crank-arms c c, extending therefrom respectively in opposite
directions and nearly or quite parallel with the locking-arms b b. Said crank-arms
are located in recesses or mortises in the window-jamb back of the stop or inner
cleat B, and through the latter at right angles to the plane of the sash slide push-
pins pp, which bear with their inner ends on the free ends of the aforesaid crank-
arms. Said push-pins I preferably form cylindrical and insert them in eyes from a
plate and coinciding with the aforesaid eyes, the plate being firmly secured to the
exterior of the stop B and the bosses d d extending through holes in the stop.
The locking-arms b b are held with their dogs b¹ normally in engagement with
the sockets in the edges of the sashes by means of spiral-springs surrounding the
bolts à a and connected thereto and to the case n, and by pushing the push-pins
toward the cams c c the bolts are turned so as to throw the locking-arms b b out of
engagement with the sashes.
By providing two push-pins, each operating the lock of one of the sashes
separately and independently of the other push-pin, both sashes can be unlocked
separately, when desired, in the operation of cleaning the windows or for other
purposes.
In order to permit the push-pin to be adjusted so as to compensate for the wear
and abrasion of its bearing on the crank-arme, I provide the lower end of the push-
pin with a screw-threaded socket j, and insert therein an adjusting-screw j¹, which
bears on the crank-arm c. By turning this screw it is caused to project a greater
or less distance from the end of the push-pin, as may be required for the aforesaid
urpose.
The bosses d d I provide each with a bayonet-joint slot f, and secure to the side
of each push-pin a lug l, which projects into the aforesaid slot. The longitudinal
portion of the slot fallows the push-pin to freely move endwise in operating the
sash-lock. The lateral offsets of the aforesaid slot allow the push-pin to be turned
so as to cause the lug / to enter either of said offsets, and thereby retain the push-
pin either in its outer or in its inner position. One of said positions prevents the
push-pin from being forced inward and operating the sash-lock and the other
position retains the sash-lock released from the sash. I do not, however, limit
myself to the exact form of the push-pin as before described, inasmuch as the same
permits of many modifications without departing from the nature of my invention.
One of such modifications is illustrated in Fig. 8 of the drawings, and consists in
forming the push-pin of a flat elongated plate, having in its lower end a perforation o,
through which the end of the crank-arm protrudes.
The edges of the sash I provide with inclined grooves / h, terminating with the
sockets h¹, which the dogs b¹¹ of the sash-lock enter. To protect the said

page_text: sockets from being battered and worn, I insert in the side of each socket opposite
the groove ha semicircular metallic plate i, disposed axially at right angles to the
edge of the sash, as shown in Figs. 5 and 6 of the drawings.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. In a sash-lock, the combination, with the rocking-sash-bolt a, having the
locking-arm & extended extending at right angles therefrom, and a spring holding
the said bolt in engagement with the sash, of the crank-arm c, extending from the
end of the sash-bolt parallel with the arm, and the push-pin p, arranged at right
angles to the plane of the sash and bearing on the free end of the crank-arm,
substantially as described and shown.
2. In combination with the rocking sash-bolt a, provided with the crank-arm c,
the push-pin p, and the screw e, connected to the end of said push-pin adjustably
toward and from the free end of the aforesaid crank-arm, as set forth.
3. In combination with the rocking sash-bolt, provided with the crank-arm c,
the plate C, formed with the tubular boss d axially at right angles to the crank-
arm, and provided with the bayonet-joint slot fin said boss, the push-pin p, sliding
in said boss, and the lug l, projecting from the side of said push-pin, substantially as
described and shown.
4. In combination with the frame A and the two sash-bolts a a, pivoted both to
said frame and provided with the locking-arms & b, adapted to respectively engage
the upper and lower sashes, and springs holding said locking-arms in engagement
with the sashes, the crank-arms cc, extending, respectively, from the ends of the
sash-bolts in opposite directions and parallel with the locking-arms, and the push-
pins pp, independent of each other and engaging, respectively, the crank-arms,
substantially as described and shown.
5. In combination with the locking-arm b, formed with the dog b¹, the sashes
provided with the inclined groove h, terminating with sockets, the metallic
plate i, secured in said sockets at right angles to the edge of the sash, substantially
as described and shown.
101
1001
J. P. BAYLY,
Applicant.