Year: 1896

page_text: Date of Application, 14th Jan., 1896
I, WILLIAM NICHOLSON, of The Saw Mills, Shieldfield Lane, Newcastle-.
on-Tyne, in the County of Northumberland, Joiner, do hereby declare the nature.
of this invention to be as follows:-
This invention relates to improvements connected with locks and the apparatus
for the same, for use upon sliding or sash windows, the object being to arrange a
simple and efficient locking apparatus which will admit of the windows being
raised or lowered to a determined amount and yet to permit of their being free to
slide the whole length or depth of the window when so required.
In carrying my invention into effect in one convenient manner I arrange my
locking apparatus in the stile of the window, that is, in the pulley stile preferably,
and I cause it to be manipulated by means of a key which can be turned by hand
or when desired by means of a cord, pulley or lever so that the pivoted lever
which I employ within the locking stile may be made to move to the desired
extent to operate upon the windows. I arrange a pivoted or vibrating lever upon
a frame which I secure to the stile, and I cause this lever to have two heads or
projecting ends or bolts which stand out from the stile lever, the two bolts being.
arranged at any desired distance apart. I cause the plate or frame which carries
the apparatus and lever to be cut away at or near the two ends to enable the two
projecting bolts to work in, the shape of the openings being made to suit the path
which the bolts will travel in.
I cause my locking lever with its two projecting bolts to stand in a vertical
position, the two bolts being in the true centre line of the window so as not to
prevent the sashes from sliding freely up and down to the full extent of the window
frame; but when it is desired to limit the extent to which the windows or the
sashes shall be opened I cause my locking lever to travel from its vertical position
to an inclined position and in order to enable this to be done I form two openings
or passages within the sashes for the bolts to enter into, or I may place two staples
on the sashes having the desired opening in each for permitting the bolt to enter
into. At the end of each of the openings either in the staples or the channels ent
within the sashes I form peculiarly shaped slots or pockets into which the projecting
bolts may fit so that when entered therein the sashes are locked at that particular
position to which they have been moved, the shape of the heads of the bolts being
such as to engage with the end of the openings formed in the channels.
I cause this reciprocating or pivoting action of the lever to be accomplished by-
means of a nut which is made to travel backwards and forwards by means of a key
or spanner which engages with a head upon the end of the screw and I make the
nut preferably with a projecting rib or flange which presses over the lever on one
or both sides so as to cause a positive movement of the locking lever to be made.
In order to cause the key to make the complete movement of the lever to admit of
its locking or not locking, I prefer to make the screw such that one complete turn
of the key shall place it in a position to admit of a sliding movement of the sashes
while a second turn will lock the sashes such that they cannot be opened or closed,
thus permitting that a definite opening for ventilation shall be maintained upon the
windows. I accomplish this in one convenient manner by means of a spring which
throws the key backwards against an opening in the key plate when one complete
turn has been made

page_text: I cause my locking to be effected automatically when desired by making the
desired number of turns upon the screw so that when the end of the path in the
staple has been reached the springs will force the bolt ends into the recesses there
formed. -
I sometimes arrange an. indicator upon my sliding bolt so that by its position
outside the bolt stile or window frame I may know the position of the locking bolt
within, and instead of employing a single screw to act upon a nut I may when
desired have a right and left handed thread for locking the two ends of the levers
or the two ends of the sliding bolts.
When constructing my improved locking apparatus for attachment to lofty and
other windows I sometimes dispense with the key movement for withdrawing and
releasing the bolts upon a pivoted lever bar, and causing one cord to attach to a
knob or projecting arm formed upon the lever bar so that when a pull or movement
is given to the lever bar the bolts are drawn from the inclined to the vertical
position which permits of the sashes sliding up and down freely; while at the
bottom I arrange another pivoted catch having a knob at the end or cord attach-
ment so that another cord or the free end of the first cord can be used to release
the catch from a pin which engages with one of the teeth or serrations formed upon
it, thereby causing a spring to throw over the pivoted lever to the inclined position
suitable for allowing the windows to be opened to the extent determined by the
staples or attachment on the frames. To lock this in position so that the window
cannot be opened by the cords being pulled I may employ a key and screw which
forces open the bar and keeps it at the desired position.
I do not limit the application of my invention to any particular position upon
the window sash or stile in which it is to be placed, neither do I limit myself to
any special form of frame or shape of lever and fittings for operating the same,
but I modify the essential features hereinbefore described to suit the arrangement
of the window or sashes to which it may be desired to apply my improved locking
apparatus, and I construct my fittings and bolts out of any suitable metal or
material, either cast or wrought.
Dated this 14th day of January 1896.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.
Appara
1, WILLIAM NICHOLSON, of The Saw Mills, Shieldfield Lane, Newcastle-
on-Tyne, in the County of Northumberland, Joiner, 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 improvements connected with locks and the apparatus
for the same, for use upon sliding or sash windows, the object being to arrange a
simple and efficient locking apparatus which will admit of the windows being
raised or lowered to a determined amount and yet to permit of their being free to
slide the whole length or depth of the window when so required.
In the accompanying sheet of explanatory drawings
Figure 1 is a front elevation partly in section of one form of my improved
lock.
Figures 2 and 3 are similar views of modifications of the same.
Figures 2 and 2B are sectional side elevations of the lock shown in Figure 2.

page_text: Figure 3 is a similar view tó Figure 3.
Figure 3B is a side view of Figure 3^.
Figure 4 is a general view showing my lock in position upon the window
stile and corresponds to Figure 3 a part of the sash being indicated by dotted
lines.
Figure 5 is a side view of my lock frame, and corresponds to Figure 1.
In carrying my invention into effect in one convenient manner as shown in
Figure 7 I arrange my locking apparatus in the stile of the window, that is, in the
pulley stile preferably, and I cause it to be partly manipulated by means of a key B
which can be turned by hand and partly by means of a cord pulley spring or lever
so that the pivoted lever D which I employ within the locking stile may be made
to move to the desired extent to operate upon the windows. I arrange a pivoted
or vibrating lever Dupon a frame A which I secure to the stile, the ends d d of
which being arranged at any desired distance apart.
'
I cause my locking lever to stand in a vertical position the two ends being in
the true centre line of the window so as not to prevent the sashes. from sliding
freely up and down to the full extent of the window frame; but when it is desired
to limit the extent to which the windows or the sashes shall be opened I cause my
locking lever D to travel from its vertical position to an inclined position as
indicated in Figure 1 and in order to enable this to be done I form two openings
or passages E E' within a sash F (Figure 4) for the ends of the locking lever 'to
enter into, or I may place two staples on the sash having a desired opening in each
for permitting the ends to enter into. At the end of each of the openings either
in the staples or the channels cut within the sash I form peculiarly shaped slots or
pockets into which the projecting ends may fit so that when entered therein the
sashes are locked at,that particular position to which they have been moved, the
shape of the ends of the locking lever being such as to engage with the end of
the openings formed in the channels..
:
I cause this rotating or pivoting action of the lever D to be partly accomplished
in one manner by means of a nut and screw G which is made to travel backwards
and forwards by means of a key or a spanner B which engages with the head upon
the end of the screw and I make the nut or screw preferably with a projecting rib
head or flange g which presses over the lever on one or both sides so as to cause a
positive movement of the locking lever to be made. The screw G does not cause
the lever D to be operated into its extreme position. When the end d¹ of the
lever D is in a position shown in Figure 1 a limited movement of the window sash
will be allowed determined by the stops E³ (Figure 4) and the lever will slide in
the groove E³.
:
If it is desired to lock the sash so as to allow. no movement whatever then the
catch K (Figure 1) must be released which will allow the spring L to act on the
lever D and force its end d¹ forward into its extreme position indicated in dotted
lines in Figure 1 and so prevent any movement of the sash. The catch K is
provided with serrations and is pivotally attached to the end d of the lever D
and is also capable of being operated by means of a cord fastened to the eye k¹.
It will be seen that the window cannot be unlocked by simply pulling, the cords
except to allow a limited opening it being necessary to use the key B.
In order to cause the key to make the complete movement of the lever to admit
of its locking or not locking, I sometimes prefer to make the screw such that one
complete turn of the key shall place it in a position to admit of a sliding move-
ment of the sashes while a second turn will lock the sashes such that they cannot
be opened or closed, thus permitting that a definite openings or ventilation shall
be maintained upon the windows.
I sometimes arrange an indicator upon my bolt or locking lever so that by its
position outside the bolts stile or window frame I may know the position of the
locking bolt within, and instead of employing a single screw to act upon a nut I
may when desired have a right and left handed thread for locking the two ends, of
the lever.

page_text: Figures 22A and 2B illustrate in front and end sectional elevations respectively
one form of my lock in which the key B is provided with a horn B₁ or tooth for
engaging with the segmental rack toothed lever D³, which is secured to the pivot
upon which the locking lever D is fixed. The lever D is held in position when
the key B has been turned by a lug or tooth M¹ entering one of the segment
teeth; this tooth M¹ is carried upon a rocking arm M and is made to engage with
the teeth of the rack ended surface of the segment lever by a spring M2 placed
above it and enclosed within the cover plate of the frame or case. It is disengaged
by means of the horn or tooth B¹ of the key B raising the rocking arm M, so that
the rocking lever D³ may then be operated also by the horn or tooth B' when it is
desired to lock or unlock the rocking bar D. The horn B entering the recesses in
the lever D³ and effecting the movements by one tooth becomes disengaged from
the recess, the projection M₁ falls into the recess that has been brought into
coincidence therewith by the rotation of the key and the lever D and rocking
bolt D are thereby secured into the altered position whereby the sashes are locked
or unlocked.
When making my lock to be liberated or opened by cord C as in addition to or
instead of by key B as shown in Figure 4 I arrange the parts as shown in Figure 3.
The locking lever D has mounted upon its pivot a trip lever D' which trip lever is
moved backwards and forwards by the key B giving motion to a crank or cam
disc N having its projecting pins n working in a horizontal slot in the connecting
lever O which passes over or embraces the lever D. I cause the spring L to
keep the connecting rod and lever D' normally back and I place a small retaining
spring n' to press against the upper surface of the cam N in order to prevent it
from moving accidentally.
To manipulate the lever by cords C and C³ I form the lever D with an exten-
sion C. I place a tumbler 6 in contact with this extension piece and pivotting on
a spindle b, which can be made to rotate by means of a small lever C on the end
of the spindle b, operated by a cord.
Referring to Figure 3 it will be seen that the lever D has been turned into its
extreme locking position. Now should it be required to bring the lever D into
such a position as to allow of a limited movement of the sash then the tumbler bl
is made to rotate into a vertical position by such means as the operation of the
cords C³ Figure 4 the tumbler thereby acting on the extension C¹ as indicated in
Figure 3 will cause the lever D' to take the position shown, and a lever D will
therefore be in its intermediate position. To bring the lever D into its vertical
position it will be necessary to turn the key B so as to lower the connecting rod or
plate O together with the tumbler b' and give thellever D a still further movement
which places the locking bolt D in its unlocked position. Therefore it will be
understood that although the rotation of the spindle b by lever C² will move the
locking lever D from its extreme lock position to its intermediate position it will
be necessary to use a key to bring the locking lever to its vertical or unlocked
position so as to obtain the unstricted movement of the sashes. I do not limit the
application of my invention to any particular position upon the window sash or
stile in which it is to be placed, neither do I limit myself to any special form of frame
or shape of lever and fittings for operating the same, but I modify the essential
features hereinbefore described to suit the arrangement of the window or sashes
to which it may be desired to apply my improved locking apparatus, and I
construct my fittings and bolts out of any suitable metal or material, either cast
or wrought.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is-
(1.) The improvements in locking apparatus for windows and window sashes
substantially as and for the purposes hereinbefore described.

page_text: (2.) The improved locking apparatus for windows substantially as herein before
described and as illustrated in the accompanying drawings.
(3.) In a locking or fastening apparatus for use upon windows and window
frames the use of a vibrating lever or pivoted arm which is caused to be moved
from a vertical to an inclined position substantially as and for the purposes herein-
before described and as illustrated in the accompanying drawings.
D
MARKS & CLERK,
18, Southampton Buildings, London, W.C., aud
13, Temple Street, Birmingham, Agents.