Improvements in Means for Operating and Securing Window Sashes.
Year: 1897

page_text: Date of Application, 24th Aug., 1897-Accepted, 9th July, 1898
COMPLETE SPECIFICATION.
Improvements in Means for Operating and Securing Window
Sashes.
I, EDWARD WILLIAM HABERMAAS, of 3317, South 18th Street, St. Louis,
Missouri, United States of America, Gentleman, 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:—
My invention has relation to improvements in sash locks and consists in the
novel arrangement and combination of parts more fully set forth in the specifica-
tion and pointed out in the claims. In the drawings, Fig. 1 is a vertical longi-
tudinal section of a window frame showing my invention applied to the lower
sash; Fig. 2 is a similar section showing the invention applied to the upper
sash; Fig. 3 is a sectional detail of the rotatable spindle to which the cords
controlling the locking devices for the sashes are secured; Fig. 4 is a detail of
the key used for operating said spindle; Fig. 5 is a front elevation of the casing
within which the spindle is mounted; and Fig. 6 and 7 are respectively detached
views of the locking latches operating in connection with the lower and upper
sashes.
The object of my invention is to construct a sash lock, which upon proper
manipulation on the part of the operator will permit the lower sash to automatic-
ally move upward to any predetermined height, or permit the upper sash to
drop any desirable distance, the locks being so constructed that when either sash
has been moved to the proper position, the latch of the lock will intercept any
further movement of such sash in the opening direction, and permanently hold
and lock the same in position against any attempt to further shift or move the
same in the direction mentioned by unauthorized persons. In detail the device
may be described as follows:
Referring to the drawings, 1 represents the window frame, 2 the lower sash
and 3 the upper sash. The lower sash is provided with a cord 4 passing over a
pulley 5 mounted in the frame, the opposite end of the cord carrying a weight 6
operating in the casing 7 located to one side of the frame as usual, the only
difference from the ordinary construction in the present instance being that the
weight 6 more than balances the weight of the sash whereby the tendency of
such weight is to always pull the sash up. The upper sash is likewise provided
with a cord 41 passing over a pulley 51 and having a weight 61 at its free end,
the sash in this case more than balancing the weight 61 whereby the tendency is
always for the upper sash to drop and draw the weight after it. Mounted
between the front and rear walls of the casing 7 near the lower end of the frame
is a rotatable or oscillating spindle 8. The periphery of the spindle is provided
with two eyes 9, 91 located diagonally opposite one another, the eye 9 having
secured thereto one end of a cord or wire 10 whose opposite end is connected
to the short arm of a pivoted bell crank or tripping lever 11 mounted in a lateral
chamber 12 communicating with the casing 7 and located in the line of the
upper rail of the lower sash when closed, the long arm of the said bell crank
being normally vertical. The free end of the long arm of the tripping lever

page_text: So
is scarfed and provided with a pin 13 to which is pivotally secured a latch 14,
the pivotal or basal portion of the latch being similarly scarfed
that the latch and long arm of the tripping lever shall be of the same
thickness at their pivotal connection' as at any other portion of
their length. The free end of the latch 14 is provided with a downwardly
inclined locking end 15 adapted to engage the bases of the upwardly tending
series of triangular teeth 16 carried by the side vertical member of the sash.
The latch is kept normally in engagement with the teeth, by the resilient action
of a flexed spring 17 mounted in the chamber 12, and having one end secured
to the inner surface of the outer wall of said chamber, the free end of said spring
bearing normally against a finger 181 depending from the pivotal point of the
tripping lever. The spindle 8 is provided with a collar 18 bearing normally
against the base of the reduced tubular inner extension 19 of a sectional casing 20
set into and secured to the window frame by means of screws 21, the said tubular
extension serving as a direct bearing or support for the spindle, and embracing
the latter between the collar 18 and the outer terminal flange 22 of the spindle.
The forward portion of the spindle or that directly supported by the tubular
portion 19 is provided with a socket 23 for the reception of the shank or stem 24
of a key, the projections 25 of which are adapted to enter the depressions 26
radiating from the outer end of the socket 23 along the flange. It is apparent
that upon inserting the key into the socket of the spindle until the projections
thereof are received by the depressions 26, and then turning the key so as to
rotate or oscillate the spindle, for example in the direction shown. by dotted
lines in Fig. 1, so as to draw upon the cord 10, the bell crank lever will be
tripped so as to draw the locking end 15 of the latch 14 out of engagement with
the teeth 16, and the weight 6 will automatically pull the lower sash up to
any predetermined height, when the operator upon releasing the spindle, will
cause the spring 17 to restore the latch to its normal position, the latter engaging
the teeth 10 of the sash and preventing the same from being raised further by the
weight 6. The lower sash can of course be drawn down at any time, the up-
wardly inclined faces of the teeth 16.readily riding over the bevel locking end 15
of the latch.
The other eye 91 carried by the spindle, has secured thereto one end of a similar
cord 10¹ whose opposite end is secured to the bell crank or
tripping lever 11
pivoted in the lateral chamber 121 also communicating with the casing 7, and
located in the line of the lower rail of the upper sash when closed. From the
arrangement of the eyes 9, 91 it is apparent that when the key is turned to rock
the spindle in a direction to pull on one cord, the other cord will remain slack,
and vice versa.
So that either one lever 11 or the other 11¹ can be tripped accord-
ing to the pleasure of the operator; and one or the other sash is thus controlled.
The upper sash 3 of course works similarly to the lower one, but reversely thereto,
that is to say, it is provided with teeth 16¹ tending downwardly, the locking
latch 14 therefor having a locking bevel end 15 inclined upwardly, so that
when the latch is disengaged from the teeth by the tripping of the lever 111, the
said sash being heavier than the weight 61 will drop until intercepted by a
release of the locking latch The upper sash can of course be readily closed,
as the teeth 161 freely ride over the upwardly inclined locking end 15¹ of the
latch 14. In each case the teeth 16, 161 form a part of a suitable plate carried
by the vertical lateral member of the sash.
It is apparent that minor changes might be made in the construction without
departing from the spirit of my invention.
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 sash lock, a lower sash having a balance weight connected thereto
heavier than the sash, an upper sash having a balance weight connected thereto

page_text: lighter than the sash, a locking device for each sash whereby upon the release
of either sash from its locking device, the sash will automatically open, sub-
stantially as set forth.
2. In a sash lock, a suitable sash, a spring-controlled tripping lever mounted
in proximity to the same, a rotatable spindle, a cord connecting the periphery of
the spindle with one arm of the tripping lever, a latch pivoted to the tripping
lever, said latch having an inclined locking end, a series of teeth carried by the
sash with which said latch co-operates, the lever being adapted to be tripped and
the latch disengaged from the teeth of the sash upon the rocking of the spindle,
and the sash allowed to be drawn to an open position, substantially as set forth.
3. In a sash lock, a suitable spindle, a socket for the same, radiating depres-
sions at the outer end of the socket, a collar carried by the periphery of the
spindle, a terminal flange surrounding the outer end of the socket, a casing
carried by the frame and having a tubular reduced extension embracing the
spindle between the collar and the terminal flange, said socket and depressions
being adapted to receive the shank and projections of a key, respectively, for
rotating the spindle, substantially as set forth.
Data
1007
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.,
Agent for the Applicant.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.