Improvements in Locks or Fastenings for Securing Sliding Window Sashes.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Locks or Fastenings for Securing Sliding Window
Sashes.
I, ARTHUR WILLIAM ADAMS, of 23 Friern Road, East Dulwich, London S.E.,
Engineer, do hereby declare the nature of my said invention to be as follows:-
The object of my invention is to fit sliding window sashes with improved locks
or fastenings for securing the same in any required position.
According to my invention I fit locks to the sash bars or stiles of sliding
window sashes. One of such locks is fitted in or on one or both of the vertical
stile or stiles of the lower sash, and sometimes also in or on the upper sasb.
A corresponding lock is sometimes fitted to the upper bar or meeting rail of the
lower sash, on one or both sides, immediately over the vertical stile; each pair
of locks being connected together by means of a sliding bar, link, or rod, so that
on operating one lock with a key or handle, the corresponding lock is simultaneously
locked or unlocked.
Suitable plates, box staples, or equivalent devices, are fitted to suitable parts of
the window frame, and to the stile or stiles of the upper sash, to receive the
bolts of the locks, so as to secure one or both sashes in an open or closed position,
as required.
Dated 4th December 1895.
GEO.
DOWNING,
8 Quality Court, London, W.C., Agent.
Improvements in Locks or Fastenings for Securing Sliding Window
Sashes.
I, ARTHUR WILLIAM ADAMS of 23 Friern Road, East Dulwich, London S.E.
Engineer, do hereby declare the nature of my said invention 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 my invention is to fit sliding window sashes with improved locks
or fastenings for securing the same in any required position.
According to my invention I fit locks to the sash bars or stiles of sliding window
sashes. One of such locks is fitted in or on one or both of the vertical stile or
stiles of the lower sash, and sometimes also in or on the upper sash.
A cor-
responding lock is sometimes fitted to the upper bar or meeting rail of the
lower sash, on one or both sides, immediately over the vertical stile. Each pair
of locks being connected together by means of a sliding bar, link or rod, so that on
operating one lock with a key or handle, the corresponding lock is simultaneously
locked or unlocked.
Suitable plates, box staples or equivalent devices are fitted to suitable parts of
the window frame, and to the stile or stiles of the upper sash, to receive the
bolts of the locks, so as to secure one or both sashes in an open or closed position,
as required.
And in order that my said invention may be particularly described and ascertained

page_text: reference is hereby made to the accompanying drawings, in which similar figures
of reference indicate corresponding parts.
Fig. 1 is an elevation, partly in section illustrating one method of applying my
invention to sliding window sashes.
Fig. 2 is a plan shewing the method of fitting the lock to the meeting bars.
Fig. 3 is an elevation, partly in section illustrating the application of my invention
to sliding sashes which are out of reach.
Fig. 4 is a face view of a portion of the lower sash shewn in Fig. 3.
Fig. 5 is a view of the lock from the underside, with the bottom plate removed.
Fig. 6 is a plan view of the same lock and Fig. 7 is an elevation, as constructed
for operating by hand.
Fig. 8 is an underside view of the lock with the bottom plate removed, shewing
the method of operating the lock by means of a lever.
Fig. 9 is a similar view of the lock and Fig. 10 an elevation as modified for
securing the same with a key.
Fig. 11 is a plan of the lock shewn in Figs. 1 and 2 and Fig. 12 is a sectiona!
elevation of the same.
Referring to Figs. 5, 6 and 7-13 is the case of the lock. 14 is a plate to which
the knob or handle 15 is attached by means of a stud passing through the slot 16
in the top of the case. A snug 17, integral with the plate 14, works in a slot 18
in the sliding plate 19, integral with the bolt 20. 21 is a perforated snug integral
with the plate 19 receiving the end of the pin 22 carrying a spiral spring, by
which the bolt 20 is pressed outwards. 23 is a bolt, working at right angles to
the bolt 20, and integral with the sliding plate 24, pressed outwards by the
spring 25. 26 is a bell-crank lever, pivoted to the case at 27 and engaging the
snug 28, integral with the plate 14 and also the snug 29 integral with the plate 24.
When the handle 15 is drawn backward the spring 22 is compressed and the
snug 17 draws backward the plate 19 and bolt 20. At the same time the snug 28,
by means of the bell-crank lever 26 and snug 29 withdraws the bolt 23, thus
operating both of the bolts simultaneously. Each bolt however is capable of
independent action, when not operated by the handle.
The lock is secured to the upper meeting bar of the lower sash by screws
driven through the holes 31 in the case and the face plate 30.
The bolt 23 engages in holes formed in a plate 42 attached to one of the stiles
of the upper sash, a number of holes being provided for that purpose at suitable
distances apart, and the bolt 20 engages in holes similarly formed in a plate 43
attached to the front bead of the window frame.
The drawings show the lock suited to the right hand side of the window, but
it is obvious that both sides of the window may be similarly fitted, if required,
the locks being formed for right and left hand application.
Fig. 8 illustrates a modification of my invention, in which the handle 15 and sliding
plate 14 are dispensed with and a lever 31 is fitted directly on to the spindle of
the bell-crank lever 26, the dotted lines shew the positions of the lever 31 in the
locked and unlocked positions. Levers may be otherwise fitted for the same purpose.
In Figs. 9 and 10 the lock is shown modified for locking and unlocking by
means of a key inserted in a key-hole 32 which operates by means of the sliding
plate 33 having a snug 34 for receiving the thrust of the key.
Figs. 11 and 12 are enlarged views of the arrangement shown in Figs. 1 and 2.
35 is the meeting bar of the lower sash, to which the modified form of the lock
is fixed. The spindle of the bell-crank lever is fitted with a lever 36 having a
pulley sheave 37 at its outer end. Another pulley 38 is fitted to the lock, as
shown. A cord 39 is made fast to the upper sash at 40.
This cord 39 is rove
round the pulleys 37 & 38 and carried down to a suitable position for handling.
On pulling this cord the lock is unfastened by its action upon the pulley 37, and at
the same time (if required) the upper sash can be drawn down. The rope 41 is also
made fast to the upper sash at 40, and passed round the upper pulley 42, whereby the
upper sash can be raised and closed.

page_text: Another method of fitting lofty sashes is shown in Figs. 3 & 4; Fig. 3 being
a sectional elevation, and Fig. 4 a front view, partly in section. In this arrange-
ment the lock 44, fitted at the upper end of the stile of the lower sash, has a single
bolt 23 engaging in a perforated plate 43 fitted to the stile of the upper sash.
The bell-crank lever 26 is operated by the rod 45, encased in a covered slot. The
lower end of the rod 45 is pivoted to the three-armed lever 46 pivoted at 47 in the
lock 48. The lower arm of this lever 46 is operated by a key inserted at 49.
The upper arm of 46 withdraws the bolt 50, pivoted at 47, by its contact with a
pin 51, and the intermediate arm of the lever 46, by means of the rod 45, with-
draws the bolt 23 from its engagement with the upper sash; by which operations
the sashes may be unfastened and opened for ventilation or otherwise.
Instead of fitting the bolt 20 to engage in a perforated plate attached to the front
bead, I sometimes arrange it to engage in a similar plate attached to the face of
the pulley stile, as shown in Fig. 13.
The outer ends of the bolts may be square bevelled, or round, as preferred;
and many parts of the mechanism are obviously interchangeable, rods being
substituted for cords, and vice versû.
A plate, similar to that shown at 14, to carry the handle, may be fitted to the
plate 24, operating the plate 24 and the bell-crank lever 26, instead of the arrangement
herein before described.
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 locks or fastenings for securing sliding window sashes,
substantially as herein before described and illustrated by the drawings.
2. In a lock for the purposes aforesaid, the combination of two bolts moving at right
angles to, and operating independently of each other, both being simultaneously
withdrawn by means of the bell-crank lever 26 or its equivalent, substantially as
herein before described and illustrated by the drawings.
3. The application and use of locks constructed and operating substantially as
and for the purposes herein before described and illustrated by Figs. 3 & 4 of the
drawings.
4. The application and use of locks constructed and operating substantially as
and for the purposes herein before described and illustrated by Figs. 5, 6 and 7 of
the drawings.
5. In combination with locks or fastenings for the purposes aforesaid, the method
of operating the same, substantially as herein before described and illustrated by
Fig. 8 of the drawings.
6. In combination with locks or fastenings for the purposes aforesaid, the method
of and means and appliances for operating the same, substantially as herein before
described and illustrated by Figs. 9 and 10 of the drawings.
7. In combination with locks or fastenings for the purposes aforesaid, the
method of and means and appliances for operating the same, substantially as herein
before described and illustrated by Figs. 1, 2, 11 and 12 of the drawings.
8. In locks or fastenings for the purposes aforesaid, the arrangement substantially
as herein before described and illustrated by Fig. 13 of the drawings.
Dated 4th Santambor 1806
GEO.
DOWNING,
8 Quality Court, London, W.C., Agent.