Year: 1887

page_text: Date of Application; 4th Feb., 1887
Complete Left, 15th Sept, 1887
Complete Accepted, 22nd Nov., 1887
1 JOHN MANN LOCKERBIE, of the firm of Lockerbie and Wilkinson, of Exeter
Street, Birmingham, in the County of Warwick, Wholesale Ironmongers do hereby
declare the nature of this invention to be as follows:-
of
My invention has reference to door latches and locks and consists in constructing
them in such manner that an outside knob, handle or other like device for opening or
drawing back the bolt of said latches and locks is normally disconnected from or out
gear with such bolt so as to be incapable of acting thereon, but can be put into gear
or connection therewith by means of a penny or other coin dropped into the latch or
lock through a slot or opening provided for the purpose. The invention is specially
intended for the latches or locks of the doors of water closets at railway stations
or other places, it enables a person to gain admission on payment of the required
charge without the employment of a special attendant to receive the money.
One manner in which my invention may be carried into effect is as follows: The
shank or spindle of the outside handle is connected inside the latch case to a plate
situated by preference above the latch bolt with which it is not connected; thus if the
handle be moved the latch bolt is not unlatched and the door cannot be opened. The
upper side of the latch bolt carries an arm or projection which overlaps the plate
connected to the handle and in the latch case just in front of the said arm is a slot or
opening through which the coin can be inserted; the coin when introduced drops
between the said arm and another arm on the front end of the handle plate. The coin
thus acts as a connection between the bolt and the plate and if the handle be now
pulled back or turned as the case may be the bolt will be withdrawn and the door can
be opened. The latch or lock is preferably arranged for the coin to drop into a suitable
receptacle as the door is closed, but its release may be effected by the shooting of a bolt
on the inside of the door. I also preferably arrange that this bolt shall act as what is
called an
indicator bolt" that is to say that when shot it brings into view outside the
door a plate bearing the word "engaged" or other like indication as is well under-

page_text: stood this indicating plate or another plate similarly connected with the bolt can be
made to cover the slot for the coins so that another coin cannot be introduced while
the apartment is occupied.
On the inside there is a handle or similar device connected directly with the latch or
lock bolt to enable the door to be opened from the inside in the usual way, and the
latch or lock is also preferably made to open with a key from the outside to allow of
a railway official or other authorized person opening the door therewith without first
inserting a coin into the latch or lock.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Latches and Locks.
I JOHN MANN LOCKERBIE of the firm of Lockerbie and Wilkinson of Exeter
Street Birmingham in the County of Warwick, Wholesale Ironmongers, do
hereby declare the nature of this Invention and in what manner the same is to
he performed, to be particularly described and ascertained in and by the following
statement:—
My Invention has reference to door latches and locks and consists in constructing
them in such manner that an outside knob handle or other like device for opening or
drawing back the bolt of said latches and locks is normally disconnected from or out
of gear with such bolt so as to be incapable of acting thereon, but can be put into
gear or communication therewith by means of a penny or other coin dropped into the
latch or lock through a slot or opening provided for the purpose.
The invention is specially intended for the latches or locks of the doors of water
closets at railway stations or other places, it enables a person to gain admission on
payment of the required charge without the employment of a special attendant to
receive the money.
In order that my invention may be better understood I will describe the same more
in detail by making reference to the accompanying drawings. The lock is of the
same construction and description as one in ordinary use with the following alterations
and additions.
.
Fig. 1. represents the interior of the lock or side next the door with the dust plate
removed.
Fig. 2. represents the exterior of the case as fastened on the door. In all the figures
similar parts are indicated by similar letters.
On the outside of the lock case or exterior cover, a, 1 cause a slot, b, the length
and thickness of a penny or other coin to be cut or formed preferably on the top above
the tumbler or bolt, t, and in close proximity to the side of the door on which the lock
is fastened.
The outside knob or handle c, Fig. 2 I fasten to a slide, d, on the inside
of the lock with a projection, e, on the inside next to the end of the lock
adjoining the striking plate, and below the slot, b, already referred to. This I
make separate and distinct from any other part of the lock. Projecting upwards
from the tumbler or bolt, t, and directly below the slot, b, in which the penny or coin
is inserted as above referred to, and at the inside distance of the diameter of a penny
1 construct two arms the one nearest the edge of the door for striking plate being the
distance of the thickness of a penny or coin from the inside face of the slide, d, fastened
to the outside knob or handle, e, Fig. 2. the other arm, g, being the distance of the
diameter of a penny from the inside of the projection, e, at the end of the slide, 7, so
that when the coin or penny, h, is inserted, it drops on the top of the tumbler or boltt,
and between the arm, f. nearest the edge of the door or striking plate, and the inside
of the sliding plate d. that is connected with the outside knob or handle c. and rests

page_text: e.
edgeways against the inside of the other arm g. above referred to and the projection,
on the slide d, thereby making a connection between the knob c. Fig. 2. and the
tumbler, t, and on the handle or knob c. now being pulled or pushed back (the coin
being inserted) the pressure is brought to hear or is transferred onto the tumbler or
bolt, t, by means of the penny or coin . forming the connection as above described,
thus the tumbler or bolt t. is pushed back and the door is opened, the person enters
and the door is reclosed the penny or coin still remaining in the same position, but
upon the door being reopened to admit of egress, the inside handle i. being unconnected
with the outside knob e. and the slide d. and being only connected with the tumbler
or bolt t. on being drawn back releases the penny or coin h. which drops down a
groovej. into a box or cavity k. made and constructed for its reception.
The lock. Fig. I is for an attendant to admit himself with a key. The lock m.
Fig. 1. is for the purpose of fastening the door n. Fig. 2. that gives access to the box
or cavity k. Fig. 1. in which the pennys or coins are deposited after passing through
the lock.
Fig. 3. is an end elevation.
Fig. 4. illustrates the slide d and the tumbler or bolt t. drawn back and the coin h.
in position between the arm g. and the projection, e.
Fig. 5. represents the door being opened from the inside, and the tumbler or bolt t.
being drawn back and the slide d. remaining fixed the penny or coin, h, passing through
the groove j. and falling into the box or cavity k.
Having now fully described the nature of my said invention and the modus operandi
of the working of the same with the aid of the drawings lodged with this my complete
specification declare that what I claim is as follows:-
The utilization of the penny or coin as the medium forming the connection between
the slide attached to the outside handle by means of the projection, and the tumbler or
bolt by means of the arm, arms or projections on the same."
Dated this 15th day of September 1887.