A LOCKING CATCH FOR BOLTS, WINDOW FASTENERS AND THE LIKE
Year: 1884

page_text: I, JAMES HUMMERSTON of 10 East Parade, Leeds in the County of York, Painter
do hereby declare the nature of my invention for A LOCKING CATCH FOR BOLTS,
WINDOW FASTENERS AND THE LIKE to be as follows:-
-
My invention relates to a locking catch attached to a sliding or other bolt such
as is used for doors or to a radial bolt as used for windows, or to any bolt secured
from the inside which may require protection from outside manipulation or
"picking."
The object of my invention is to prevent a bolt being pushed back from the
opposite side by the insertion of an instrument.
To accomplish this I give the knob of the bolt which moves in or upon the main
bolt, a movement in advance of the movement of the bolt itself and this move-
ment of the knob locks or unlocks the main bolt, by means of a suitable trigger
arrangement.
For the sake of simplicity I arrange the whole so that the push, pull or turn
as given to an ordinary bolt, effects the combined movements.
T
1004
JASPER & W
SNOWDON,
Agents for the Applicant,
Beckett's Bank Chambers, .
Leeds, Yorkshire.
I, JAMES HUMMERSTON, of 10 East Parade, Leeds, in the County of York, Painter,
do hereby declare the nature of my invention for A LOCKING CATCH FOR BOLTS,
WINDOW FASTENERS AND THE LIKE and in what mauner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :-
My invention relates to a locking catch attached to a sliding or other bolt such
as is used for doors, or to a radial bolt as used for windows, or to any bolt secured
from the inside which may require protection from outside manipulation or
'picking'
"

page_text: The object of my invention is to prevent a bolt being pushed back from the
opposite side by the insertion of an instrument.
To accomplish this I give the knob of the bolt, which moves in or upon the main
bolt, a movement in advance of the movement of the bolt itself, and this move-
ment of the knob locks or unlocks the main bolt by means of a suitable trigger
arrangement--For the sake of simplicity I arrange the whole so that the push,
pull or turn, as given to an ordinary bolt, effects the combined movements.
On the accompanying drawing, Fig. 1, shows an arrangement adapted to an
ordinary doorbolt, whilst Fig. 2, is a side view of the same.
The bolt is shown shot forward and locked. The Handle or knob A, which is
attached to the inner bolt B., is moved in the ordinary way, when the inclined
plane, or toe, C, pushes the trigger, spring, or catch, D, out of the way of the
inain bolt G.; by this time the pin E (or other equivalent) has come to the end
of the slot (or its equivalent) in the main bolt, whereupon the main bolt is
drawn back.
The reverse action locks the bolt.
The same letters refer to the same parts (or their equivalents) in all the figures.
Figs. 2 and 3 show a straight-bolt arrangement suitable for a window sash.
The pin F. fig. 4. moving in its slot, limits the throw of the main bolt G. Instead
of a handle a tassel can be arranged if required as shown.
Figs. 5. 6 and 7, are, respectively, the plan longitudinal section, and transverse
section of an arrangement of a radial-bolt for a window sasli.
In fig. 8, an arrangement is shown for a door-handle system-By the first
movement of the door handle the trigger, or catch, D, is moved out of the way of
the main bolt; the trigger then cones in contact with the projecting pin E,
causing the main bolt to be drawn back. A spring not shown is required to
.make the handle fly back into the mid position shown.
Many modifications of these arrangements could be given but I think I have
sufficiently shown the principle underlying each.
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
1 claim is―
1st The making of a bolt or fastener that may be pushed, pulled or turned in
the ordinary manner, whose movement, although continuous, is inade up of two
actions one unlocking and the other withdrawing the main bolt-with the object
and for the purpose described.
2nd The making of bolts or fasteners substantially in the manner and for the
purpose herein before described and shown on the drawing.