Improvements in Locks or Fastenings and Stops for Window Sashes.
Year: 1894

page_text: COMPLETE SPECIFICATION.
Improvements in Locks or Fastenings and Stops for Window
Sashes.
HARRY SWANN 88 Ashmore Road Harrow Road London W. Engineer, 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 has reference to improvements in locks or fastenings and stops for
window sashes consisting of one or more bolts, either combined or separate, with
or without springs, which makes it partly self-acting.
Is fixed to the stiles of a window sash, or to the pulley stiles of frame.
The fastener when fixed, and the sash down is secured; by a bolt projecting out
in a sloping position, close down to the top rail of the bottom sash.
The bolt which has a foot piece on the bottom of the back edge is arranged so
as to fall into a slot in the metal case to form a stop either when the bolt is in or
out of position.
To withdraw the bolt into position the pin end of a double ended key, is inserted
into a. hole in the front of the bolt, which is slightly lifted up; and at the same time
drawing it forward; the bolt is then locked down by inserting the barrel end of the
key, over the spindle end in the front of the mortice plate, and turning the catch
on to the bolt.
To release the sashes the barrel end of the key is inserted over the spindle and
with a slight turn the catch is released, leaving the bolt free. The bolt is then
lifted up and pushed back into the metal case flush with the mortice plate.
The fastener when fixed to the top sash secures the two sashes, it also acts as
a sash stop when fixed at a given height allowing the two windows to be opened for
ventilation.
It also when fixed into the pulley stiles of the frame secures the bottom sash
alone.
It also acts as a sash stop when fixed at a given height allowing the bottom sash
to be opened for ventilation and leaving the top sash free.
In reference to Figures. (1) shows the front elevation of sash stop and fastener
when in an unlocked position and before the bolt (A) is withdrawn.
Figure (2) shows the side elevation of fastener when the bolt (A) is drawn
forward and locked.
Figure (3) shows the back elevation of the mortice plate with a slot (B) and
recessed hole (C) at the top, a projecting piece (D) at the bottom, and the two
screwholes (E) for fixing to the sash.
Figure (4) shows the front elevation of the metal case with a round hole (F)
two slots in the bottom of the case (G & G 1) and two foot pieces (H).
Figure (5) shows the side elevation of a skeleton bolt (A) with a hole (J) in
the front edge, also a spiral spring (K) in the back edge and a foot piece (L) on
the bottom.
Figure (6) shows a round spindle with a square (M) on one end, and a
feather (N) on the side and a hole (P) for pin at the other end of spindle.
Figure (7) shows a catch with a round hole and key-way (R) recessed for feather
of spindle.
Figure (8) shows a double ended key with pin (S) on one end and a barrel (T)
on the other end.

page_text: The sash is secured when closed by inserting the pin end (S) of the key Fig. (8)
into a hole (J) in the front of the bolt (A) Fig. (5) it is then slightly lifted up to
clear the foot (L) of the bolt (A) Fig. (5) out from the slot (G) in the bottom of
the metal case Fig. (4) at the same time drawing it forward. The foot of the
bolt (A) will then drop into the slot (G 1) at the bottom of the case Fig. (4).
The barrel end (T) of the key Fig. (8) is then inserted into the end of the
spindle (M) Fig. (6) and with a slight turn brings the catch (R) Fig. (7) down
on to the top of bolt (A) Fig. (5) which is then locked.
To release the window sashes the barrel end (T) of the key Fig. (8) is inserted
on the end of the spindle (M) Fig. (6) in the front at the top of the mortice plate
Fig. (3) and with a slight turn releases the catch (R) Fig. (7) from the bolt (A)
Fig. (5) which is then pushed into the metal case Fig. (4) flush with the mortice
plate Fig. (1) leaving the sashes free from obstruction.
Can be made in either cast or wrought metals of any description and alloys.
Having now described the manner of carrying out my invention, I would have it
understood what I claim is viz. :—
1st. The locking mechanism.