Year: 1888

page_text: Date of Application, 9th May, 1888
Complete Specification Left, 28th June, 1888
Complete Specification Accepted, 3rd Aug., 1888
WILLIAM CRISP 59 Praed Street Paddington W. Carpenter & Joiner do hereby
declare the nature of this invention to be as follows:
The lock in this invention is composed of two plates of metal fitting close to both
sides of door and so formed to correspond with finger plates.
The lock is fitted with sliding or striking bolt, looped at one end through which the
handles pass for the purpose of drawing back the bolt, the striking end of which
is cranked to receive small double locking bolt.
The lock is also fitted with spring and lever, acting upon locking bolt, the lock is
also fitted with wards in different positions to vary form of keys.
The key is what is termed a cabinet key by this arrangement the keyhole does not
pass through door.
The handles passing through the metal plates which form the lock render them
always firm.
The lock is so formed as to apply to any thickness door and is reversiable.
The mortice required by the mortice lock whereby the door is so much weakened
is not needed only requiring small and shallow mortice.
The projection also the cutting away of architrave as with rim lock to receive box
staple is avoided.

page_text: "
I, WILLIAM CRISP of 59 Praed Street Paddington in the County of Middlesex
Carpenter and 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 :-
My invention relates to an improved combination of a rim and mortice lock, con-
structed in such a manner that the style is not cut away to that extent required for
the reception of a mortice lock, and thereby saves the locking style from being cut
almost through, as in the case for fixing ordinary mortice locks.
The object of my invention is to obviate weakening the locking style of ordinary
doors and to provide a lock with two bolts to shoot upwards, to prevent the main bolt
being withdrawn by means of the knobs on the spindle.
My invention has the advantage over all other locks, by the key not being permitted
to pass through the door.
The lock is composed of two plates of metal fitting closely to both sides of the door
and is so formed to correspond with ordinary finger plates. The lock is fitted with a
sliding or striking bolt looped at one end, through which the follower is fitted to permit
the spindle to pass through, for the purpose of drawing back the bolt by the knobs
fixed to the spindle, the striking end of which is cranked to receive the small double
locking bolt. The lock is also fitted with springs and levers to act upon the locking
bolt and is fitted with wards in different positions to take the various forms of keys.
The key is what is termed a cabinet key, and by this arrangement the keyhole does
not pass through the door. The spindle passing through the metal plates which form
the lock, render the knobs always firm. The lock is so formed that it may be adapted
to thickness of door and is reversable. The mortice as required by the ordinary
mortice lock whereby the style is so much weakened, is not needed in this invention as
it only requires a small and shallow mortice as shewn in Figures 5 and 6. The pro-
jection of a box staple also the cutting away of the architrave as with a rim lock is
avoided.
any
And in order that my invention may be thoroughly understood, I now proceed to
describe the accompanying drawings thereof, reference being had to letters and figures
marked thereon.
Figure 1 is the front elevation of one of the plates marked C, the knob G, on the
raised surface. F, with key hole H, and the bolt D, with ends of ordinary finger
plates B, B, on the style A.
Figure 2 is the side view of figure 1 with the returned end marked I of the
plate C.
Figure 3 is the interior of the lock fixed to the plate C, the looped striking bolt
marked J, working in a recess at the back of F, with the fixed plate U, on which the
locking apparatus works, with the wards O, O, and the springs P, P, the bolts N N,
and the guide pins R, with the centre pin Q on which the key works.

page_text: Figure 4 is a section on line a, b, of figure 3.
Figure 5 is the front view of the style showing the small portion of the style to be
cut away.
Figure 6 the side view of figure 5.
Like letters refer to like parts in each of the figures.
A the style of the door.
B finger plates. Clock plate. D the striking bolt.
E lock plate. F raised surface on lock plate C. G knob. H key hole. I returned end
of lock plate C. J looped shaped portion of striking bolt. K follower. M spring.
N locking bolts. O wards. P springs. Q key centre pin. R guide pin. U plate
on which the lock apparatus works.
Having now fully described the nature and object of my invention, and the
manner in which the same is to be performed, I claim as new and novel the
following:-
First. The combination of a rim and mortice lock, having the appearance and acting
on the door when finger plates are added, of an ordinary lock and finger plate
substantially herein described and according to the accompanying drawings.
Secondly. The combination of the two plates C and E, with interior arrangement
of the looped portion of the striking bolt, worked by the follower, in which the spindle
is inserted, and the two bolt lock, worked by a cabinet key, substantially herein
described and according to the accompanying drawings.
Thirdly. I claim the advantage of this lock over all other mortice locks now in use,
as the style of the door only requires a small portion cut away to receive the lock
substantially herein described and according to the accompanying drawings.
Fourthly. The spindle passing through the plates C, E, renders the knob always
firm, substantially described.
Fifthly. By use of a cabinet key the keyhole through the door is prevented,
substantially described.
.. 001
C T
1000