Improvements in Coin Operated Door Locks, Applicable for the Doors of Public Closets and other Places.
Year: 1889

page_text: Date of Application, 8th May, 1889
Complete Specification Left, 14th Aug., 1889-Accepted, 14th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in Coin Operated Door Locks, Applicable for the
Doors of Public Closets and other Places.
We, JOHN GARRUD of 2 Shacklewell Lane, Kingsland, in the County of
Middlesex, Confectioner, and WILLIAM TREADWELL, of Elm House, Church Street,
Chelsea, also in the County of Middlesex, Gentleman do hereby declare the nature of
this invention to be as follows
This invention relates to coin operated door locks applicable for the doors of public
closets and other places.
According to this invention, the lock is contained in a recess in the door frame
and jamb, the bolt taking into a staple affixed to the inside of the door and partially
overlapping the door jamb. A coin slit of suitable size is made in the door frame
through which the coin is passed and falls down an inclined shoot or guide into a
claw on one end of a rocking lever whose other end passes through the door jamb and
terminates in a hook which forms the locking bolt The coin is prevented from
passing through the claw by a stop on the other side which thus keeps the coin in
the claw standing on its edge. The weight of the coin depresses the lever and raises
the locking bolt when the door may be pushed open from the outside. This stop is
attached to a rod passing into a tube within which is a spiral or other spring, termi-
nating in a push at its further end. The said tube pisses through the door frame and
Jamb and opens on to the face plate of the locking staple attached to the door and
overlapping the door jamb. When the door is closed, the spring is under tension,
the push is within the tube and the stop is in front of the coin claw. When the
door is opened, the push is pressed out of the end of the tube and withdraws tho
stop from the front of the claw and allows the coin to fall into a suitable receptacle
or till between The said stop is at such a height as to retain a coin of a given
size, such as a penny, but will allow a smaller coin to pass under it and fall into the
till without actuating the rocking lever
When the operator is inside, the door may be closed and secured by means of
an ordinary button or turn fixed to the side of the door jamb This button or turn
is rigidly affixed to a horizontal rod passing through suitable bearings in the door
Jamb and frame and provided with a spiral projection or screw thread extending round
one fourth of the circumference of the rod. A bell crank lever is pivotted to a lug
on the side of the coin shoot in such a manner, that one arm rests against the forward
end of the screw thread while the other arm rests against its hinder end. The
forward arm of the bell crank carries a stop which passes across the coin slit when
the button is turned so as to secure the door and thus prevents the insertion of
a coin therein while the closet or other place is engaged The reverse turn of the
button uncloses the coin slit.

page_text: COMPLETE SPECIFICATION.
Improvements in Coin Operated Door Locks, Applicable for the
Doors of Public Closets and other Places.
We, JOHN GARRUD, of 2 Shacklewell Lane, Kingsland, in the County of
Middlesex, Confectioner, and WILLIAM TREADWELL of Elin House, Church Street,
Chelsea, also in the County of Middlesex, Gentleman, 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 relates to coin operated door locks applicable for the doors of public
closets and other places
According to this invention the lock is contained in a recess in the door frame
and jamb, the bolt taking into a staple affixed to the inside of the door and partially
overlapping the door jamb. A coin slit of suitable size is made in the door frame
through which the coin is passed and falls down an inclined shoot or guide into a claw
on one end of a rocking lever whose other end passes through the door jamb and
terminates in a hook which forms the locking bolt The coin is prevented from
passing through the claw by a stop on the other side which thus keeps the coin in
the claw standing on its edge. The weight of the coin depresses the lever and raises
the locking bolt when the door may be pushed open from the outside This stop is
attached to a rod passing into a tube within which is a spiral or other spring,
terminating in a push at its further end The said tube passes through the door
frame and Jamb and opens on to the face plate of the locking staple attached to
the door and overlapping the door jamb. When the door is closed the spring is
under tension, the push is within the tube and the stop is in front of the coin
claw. When the door is opened the push is pressed out of the end of the tube
and withdraws the stop from the front of the claw and allows the coin to fall into
a suitable receptacle or till beneath. The said stop is at such a height as to retain
a coin of a given size, such as a penny, but will allow a smaller coin to pass under it
and fall into the till without actuating the rocking lever.
When the operator is inside, the door may be closed and secured by means of
an ordinary button or turn fixed to the side of the door jamb This button or
turn is rigidly affixed to a horizontal rod passing through suitable bearings in the
door jamb and frame and provided with a spiral projection or screw thread extending
round one fourth of the circumference of the rod. A bell crank lever is pivoted
to a lug on the side of the coin shoot in such a manner that one arm rests against
the forward end of the screw thread while the other aim rests against its hinder-end.
The forward arm of the bell crank carries a stop which passes across the coin slit
when the button is turned so as to secure the door and thus prevents the insertion of
a coin therein while the closet or other place is engaged. The reverse turn of the
button uncloses the coin slit.
And in order that our invention may be more fully understood and carried into
practice, we will now proceed to describe the same with reference to the accom-
panying drawings, in which similar letters indicate corresponding parts in all the
Figures.
Figure 1 shows a perspective view of part of a door fitted with our coin operated
lock; Figure 2 is a sectional side elevation of part of the door jamb and shows the
mechanism of our lock; Figure 3 is a sectional elevation on the line X X Figure 2;
Figures to 7 are enlarged detail views, and Figure 8 is an enlarged perspective
view of the inside of the door staple.
The staple V is affixed to the inside of the door so that one end overlaps the door
jamb when the door is closed The locking bolt D is provided with a hook G at its
end as shewn in Figure 2, which said hook takes over the edge of the front plate o
of the staple
A rod W is affixed to the spindle of a handle w on the inside of the
door, which said rod when the handle is turned, knocks up the end of the locking
bolt D and so releases the door. A spring a affixed to the inside of the staple V

page_text: normally keeps the rod W down away from the end of the locking bult D see
Figure 8.
The coin when inserted through the slot C falls down the inclined shoot E into
the claw F affixed to or formed in one with the end of the locking bolt D. One side
of the claw is open, but the coin is prevented from falling therethrough by the
stop H, and it is thus kept standing on its edge. The weight of the coin turns the
locking bolt D on its pivot d which said pivot is carried by a bracket b attached
to some fixed part of the frame The position of the bolt D when unlocked is shewn
by the dotted lines in Figure 2, and the position of the coin stopped by the stop H 15
shewn in Figure 3.
The stop His attached to a rod J passing into a tube K within which is the spiral
or other spring L pressing against a shoulder on the rod J and tending to keep the
same away from the open front of the claw F The rod passes through the door
frame and jamb and terminates in a spring push M, and the normal position of this
push under the influence of the spring is shewn in the dotted lines in Figure 2. A
section of the stop and the spring and tube is shewn in Figure 4. The face plate v
of the staple V abuts against this push M when the door is closed and keeps the same
close within the door frame and jamb, and the stop H attached thereto is then kept
in front of the opening in the claw F When the door is pushed open however
by the person desiring to enter, the pressure of the face plate being removed, the
push M springs outwards and withdra as the stop H from in front of the claw E, when
the coin falls out of the claw and into a suitable receptacle or till N beneath
height of the stop H is adjusted so as to allow coins smaller than that required
to work the lock to pass thereunder without actuating the locking bolt D
The
When the operator is inside and closes the door, the coin having fallen out of the
claw, the locking bolt D turns on its pivot and allows the face plate of the staple
to pass thereunder and to engage itself with the hook G on the locking bolt D. The
door may be secured on the inside by the button or turn 0 on the side of the door
fraine This button or turn 0 is rigialy affixed to a spindle P which passes through
suitable bearings in the door frame and jamb and into a cylindrical piece carried by
the bracket T and which terminates in a projecting piece A made in the form of a
spiral or thread of a screw of . quick pitch extending round one fourth of the cir-
cumference of the rod P, so that a quarter turn of the button O will bring the lowest
part of the spiral or thread into the horizontal plane originally occupied by the highest
or vice versa T is a bracket forming bearings for the rod P and U is a spring which
rests against the rod P which is here made square in cross section, so as to keep the
Baid rod P in whichever position it may be placed by the turning of the button O.
This part of our invention is illustrated in the enlarged detailed views Figures 5 to 7.
In Figure 2 the position of the rod P and projecting piece A is shewn when the
button O is vertical .e when the door is unsecured, and in Figure 5 the position is
shewn when the button O is horizontal .e. when the door is secured. The button is
provided with a stop or stops so that it can only be turned through one quadrant of
a circle either to the right or to the left, and is preferably winged for easy manı-
pulation. Figure b shews in elevation the coin shoot E to which is affixed a lug or
lugs R carrying a spindle c forming part of or affixed to the elongated bell crank
lever B Figure 7 is a plan of Figure 6. The bell crank may thus be turned to
either side working on the spindle c. A stop S of about the size of the money slot C
and curved or arched, is affixed to the bell crank B and passes through an aperture
in the side of the coin shoot E so as to shut off or open the coin slot C according to
whether the button is turned to secure the door or the reverse.
The end of the projecting piece A is between the arms of the bell crank B and
when the button O is turned so as to secure the door, the highest part of the spiral
or thread presses against that arm of the bell crank B which carries the slot closing
stop S, and thus closes the money slot C. When the button O is turned in the
reverse direction the lowest part of the spiral or thread then acts upon the other arm
of the bell crank B which again is turned on its pivot or spindle c and the stop S
withdrawn from the coin slot C. It will thus be seen that the securing of the door

page_text: on the inside by turning the button also secures the coin slot thus ensuring that the
door cannot be opened or a coin dropped in the apparatus when the closet or other
place is engaged, and vice versa.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
olaim is :-
(1) The combination with the button 0 of the rod P partial spiral projecting
piece A, bell crank B, and coin slot closing stop S, all constructed and arranged
substantially as and for the purpose hereinbefore set forth and illustrated in
Figures 1, 2, 5, 6 and 7 of the accompanying drawings.
(2) The spring actuated push M and coin stop H substantially as and for the
purpose hereinbefore set forth and illustrated in Figures 1, 2 and 4 of the
accompanying drawings.
.
(3) The combination of the several parts forming our coin operated lock all
constructed and arranged substantially as and for the purpose herein before set forth
and illustrated in the accompanying drawings.
Dated this 14th do of Ano 1980
CASTLE SMITH,
Per F. W. Golby,
"Invention" Office, 54, Fleet Street, London, E., Agent for the Applicant.