Improvements in or relating to Sash Locks and the like.
Year: 1889

page_text: Date of Application, 6th Apr., 1889
Complete Specification Left, 2nd Jan., 1890-Accepted, 8th Feb., 1890
PROVISIONAL SPECIFICATION.
Improvements in or relating to Sash Locks and the like.
I, HALLAM CARTER PEGG of 87 Noel Street, Nottingham, Architect's assistant,
do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in the mechanism arrangement and fixing
of sash locks especially applicable for use in asylums, hospitals &c. and embodies
means whereby one lock is made either to hold fast in certain positions, or to control
the movements in certain positions or between certain limits, of two sashes (top and
bottom) simultaneously-that is one or both sashes may be locked while shut, or may
be locked in such a manner that each can he slid up and down a desired distance, or
may be locked in a certain open position which has been determined upon as the
maximum distance which they can be left open with safety.
The lock is fixed in any suitable position in the window frame, but preferably in
such a position that its bolt shoots into and engages with two chamfered staple-plates
or equivalents fixed upon contiguous angles of the sashes near to the top of the bottom
sash and the bottom of the top sash and these staple-plates may be provided with
suitable stops or notches to engage with the bolt for the purposes before described.
These stops may be either formed integrally with the staple-plate, or pivotted
loosely and kept in position by springs in order that the bolt may slide past them in
one direction, but be locked or held fast when past them, or instead of the
loose stop and spring I may employ a stouter spring to act by itself as a
spring stop.
The lock is made to mortice into that face of the pulley-style of the window-frame
which is in contact with the sashes, and the bolt (which shoots out of that face) is
actuated by means of a suitable key inserted into a key-hole upon and in that face
of the frame which is towards the apartment or otherwise suitably placed.
In one form of the lock the key actuates a horizontal spindle which gives
horizontal movement to the bolt in a direction at a right angle to itself, by means of
a suitable eccentric, cam, or equivalent which shoots or withdraws the bolt by one
half revolution.
In other forms or modifications of the lock the bolt may be shaped and pivotted so
as to form a bell-crank lever in itself, of which the bolt-head is the longer arm.
The shorter arm engages with a suitable screw or nut, which is actuated by the spindle
which in its turn is either a nut or a screw respectively and which is actuated by
the key.
I may also when desirable use lever or tumbler locks modified to suit the peculiar
circumstances of any particular case as regards the details of construction of sashes
and frames.
W. P. THOMPSON & BOULT,
COMPLETE SPECIFICATION.
Improvements in or relating to Sash Locks and the like.
1, HALLAM CARTER PEGG of 87 Noel Street, Nottingham, Architect, 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 locks adapted for use in connection with sliding, sash
windows and is especially applicable for use in Asylums, Hospitals and elsewhere
where it is desirable to restrict the opening of the sash windows within certain limits.
LP 77

page_text: It embodies means by which one lock is enabled to securely fix one or both sashes
in certain positions, or to limit their movements between certain positions that is :-
one or both sashes may be locked while shut or may be locked so as to admit of each
sash being slid up and down a desired distance, or may be locked in a certain open
position which may be determined upon as the maximum distance which the sashes
shall be allowed to be opened.
In order that my invention may he more readily and distinctly understood reference
is made to the accompanying drawings in which Figure 1. is a horizontal section and
Figure 2 a back elevation, with the back plate B removed of a sash lock constructed
according to this invention.
Fig. 3. is a horizontal section and Fig. 4 a back elevation of a modification.
Fig. 5. shows the application of my invention to a window frame, the sashes being
shown closed but capable of opening within a certain limit.
Fig. 6. is a similar view but showing the sashes locked open.
Fig. 7. is an elevation of the top or outside sash K.
Fig. 8. is a horizontal section of the window sashes and frame taken near the
meeting rail to shew the relation between the lock bolt and the staple plates.
The lock is mortised into the pulley style of a window frame M. so that the key
hole D in fig. & is directed preferably towards the room or apartment (Figs. 7. & 8.)
and so that the bolt when shot or in its outward or extended position as shown
in fig. 1. (or figs. 1. & 2.) may be in contact with one or both staple plates H. (figs. 5.
to 8.) on the window sashes.
In figs. 1. and 2. A is the face plate which when fixed in position is preferably
flush with the pulley style L of the window frame M. B. B' is the casing enclosing
the internal mechanism of the lock.
The bolt C. is fulcrummed at C₁ to the casing of the lock and has a screw bolt or
spindle D. eccentrically connected to it at D³, the other end of the bolt D. being
screw-threaded and enclosed within and actuated by an internally screw-threaded
nut or socket D¹ whose outward end D2 is formed square as shown or in such other
manner that the nut D¹ may be actuated by a key, to shoot and withdraw the bolt C.
When the bolt C. is withdrawn by turning the nut D' as mentioned, the part (2 is
brought flush and contiguous with the part A¹ of the face plate A.
In the modification illustrated in figs. 3. and 4. a batchet-shaped bolt E. is shown
fulcrummed at E' to the casing plates F.
The bolt E is provided on its upper and lower sides with ears or extensions E²
through each of which a screw passes at E3; or the bolt may be otherwise connected
to the block G which is internally threaded to fit on to and be actuated by the
serew G the outward end of which is in the shape of a square or otherwise suitably
shaped head G2 to enable it to be turned by means of a key. The screw G¹ is
provided with collars G³ to bear against the sides of the case and prevent it from
travelling. When the screw G₁ is turned in one direction it will cause the block G
to move forward and shoot the bolt E into its outward or extended position.
In order that the window may be locked when it is either opened or closed, or
locked so as to enable the top and bottom sashes to move up and down within certain
prescribed limits I secure to the angle of each of the sashes a chamfered staple-
plate H as shown in figs. 5 to 8.
-
The staple-plates are provided at certain points in the direction of their length
with stops or projections H¹ to engage with the bolt when the latter is in its extended
position and thereby prevent the sash being raised beyond a certain limit, or with two
or more stops, projections or recesses between or into which the bolt can pass to fix
or lock one or both of the sashes in any position that may be determined upon.
Fig. 5. represents the bottom sash J. and the top sash K both shut close.
The top sash K is free to be lowered and the bottom sash J. is free to be raised
until the stops H¹ H₁ respectively come into contact with the lock bolt H2 indicated
in dotted lines in fig. 5 which will prevent any further downward or upward
movement respectively on the part of either of the sashes.
The sashes J. and K. are free to be closed again at any desired moment and being

page_text: quite independent of each other are separately moveable so that while one is shut the
other may be open.
In fig. 6. the top and bottom sashes are represented as being open to a prescribed
limit and locked in that position.
It is obvious that by omitting one of the stops H' one of the sashes will be free to
move up or down within the prescribed limit as in fig. 5, while the other may be
locked "open
as in fig. 6.
دو
The stops H¹ may either be formed integrally with the staple-plates H or be
pivotted loosely thereon and retained in position by springs or equivalent so that they
may slide past the lock bolt in one direction, but be locked or held fast by it when
past it, or instead of the pivotted stop and spring I may employ a stouter spring
capable of acting by itself as a spring stop.
The extent to which the sashes J. K. may be opened under the control of the lock
bolt is regulated by the length of the staple-plates H; while the various positions in
which one or both sashes may be locked, or the distances such sashes may be free to
slide up and down within the maximum prescribed limit is regulated according to the
different positions in which the stops H are placed on the staple-plates H.
I may also when desirable make modifications in or departures from the structural
details illustrated in the drawings without departing from the spirit of the invention,
and "lever" or "tumbler" locks may also be modified to suit the peculiar circum-
stances of any particular case, that is as regards the details of window sashes or
frames.
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 combination with a window frame or sashes of a lock adapted to restrict the
movement of the window sashes within certain prescribed limits or to lock the sashes
in certain positions substantially as described.
2. A sash lock constructed and operating substantially in the manner and for the
purpose described and illustrated in figs. 1. and 2. of the accompanying drawings.
3. A sash lock constructed and operating substantially in the manner and for the
purpose described and illustrated in figs. 3. and 4. of the accompanying drawings.
4. The combination with a sash lock of a staple-plate such as H. provided with one
or more stops, projections or recesses substantially as and for the purpose described
and illustrated in the accompanying drawings.
5. The arrangement and combination of parts forming the complete window
fastening substantially as herein described and illustrated in the accompanying
drawings.
Dated this 1et dow of Innum 1890
HALLAM CARTER PEGG.
W. P. Thompson & Boult,
Agents for the Applicant.