Improvements in Registering Locks for Doors.
Year: 1891

page_text: Date of Application, 18th Aug., 1891
Complete Specification Left, 18th May, 1892-Accepted, 25th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in Registering Locks for Doors.
1 JOHN NEVIL MASKELYNE of The Egyptian Hall, Piccadilly, in the County of
Middlesex, Gentleman, do hereby declare the nature of this invention to be as
follows
The object of this invention is to provide a simple and efficient registering lock
for the doors of water-closets and other places, so as to obtain a record of the
number of persons using such places.
In carrying out this invention, the latch or bolt is pivotted near the back of the
box, and is raised by a cam on the spindle of a handle adapted to the inside of
the door to which the lock is to be applied.
On the same spindle is an arm which is connected by a link to a counting
mechanism of any
convenient form.
This arm works in a notched plate which is adapted to slide sideways under the
influence of a lever which is operated by a pin attached thereto, and which strikes
against a stud on the door frame when the door is shut.
The notch in the plate is formed with a shoulder, which, when the door is opened,
overlies the arm, so that the latch or bolt cannot be moved until the door is
closed.
When the latch has been raised and the door opened, a spring catch carried on
the underside of the arm passes over a second shoulder of the notched plate, and
prevents any further movement of the latch until the door is closed, when, by the
lateral movement of the plate, the catch is released from the shoulder, and the latch
drops, under the influence of a spring.
The latch or bolt can be raised from outside the door by means of a special key,
the raising mechanism being entirely independent of the handle inside the door and
the registering mechanism.
The latch will be allowed a certain amount of play, so that should the handle be
unwittingly turned by the person using the convenience when shutting the door,
and the latch be thereby raised and register, the latch will still be able to catch
behind the hasp, and will not register again when the door is finally opened for the
exit of the person.
Dated this 18th day of August 1891.
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Registering Locks for Doors.
I, JOHN NEVIL MASKELYNE of The Egyptian Hall, Piccadilly, 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 :-
The object of this invention is to provide a simple and efficient registering lock
for the doors of water-closets and other places, so as to obtain a record of the
number of persons using such places.

page_text: Fig. 4 is a vertical section on the line z z, Fig. 1.
The remaining figures shew certain parts in detail which will be particularly
referred to in due course.
A is a box or casing, by the bottom plate of which, all the parts of the lock
and registering mechanism are carried, and B is the registering mechanism of
any suitable construction, the figures being seen through an opening in the plate,
which is closed by a hinged door or cover having suitable locking mechanism,
as shown at Fig. 2.
C is the bolt or latch which is pivotted to a stud on the bottom of the
case A. Spanning the bolt and other parts, is a bridge piece C2, on which is a
sleeve bearing C³ for a socket spindle C, which is intended to project through the
door, to receive a key. On the end of the socket spindle C is keyed an arm D,
which, when the bolt C is in its normal or lowered position, is in contact with a
pin or stud C* projecting laterally from the bolt C (see Figs. 1, 3, & 4).
When the arm D is raised by the key, the bolt C is also raised by means of this
pin C. The arm D is formed with two lugs D₁ and D2 at its outer end (see
Fig. 1).
Pivotted to the back plate of the case A, and in rear of the bolt C, is a second
arm E, having at its front end a lateral projection E*, to which a pawl a is
fitted, to move in a plane at right angles to that of the arm E. Against the
pawl a strikes one or other (according to circumstances) of the lugs D¹ D², as
will be presently explained.
To the arm E is pivotted, at E*¹, a catch lever E¹, the rear end of which is
slightly bent outwards, and extends beyond the pivot of the arın E. The front
end of this lever E' enters a notch or slot in the projection E*, and lies behind the
tail of the pawl a (see the detail figures, Sheet II.). On the underside of the
arni E, and near the pivot, is a lateral projection E2, which serves as a stop. This
stop, as the arm is raised or lowered, moves in the arc of a circle, for a purpose to
be more fully explained.
When the socket spindle C is turned by means of a key, to let a person into
the compartment, the arm D is raised, the lug D' strikes against the pawl a,
the arm E is thereby raised, and the lever E' catches on the projection or catch 1
on the bottom of the case, the bolt C being also raised, to allow of the door
being opened. When the door is opened, the key is withdrawn from the socket C+,
and the bolt C will then drop again to its normal position by its own weight
with the arm D, but the arm E will be retained in the raised position by the
catch 1. The door can now be closed by the person inside the compartment, the
bolt C being free to rise and fall over and behind the hasp.
To open the door again, the person inside turns the handle F, on the spindle F¹
of which, is keyed the arm F. This arm is above the plane of the bolt C, and
carries, on its inner side, a laterally projecting pin F³, which strikes against the
underside of, and raises, the bolt C. This arm F2 cannot, however, be raised until
the lateral projection E2 is, by raising the arm E, moved out of the path of a
shoulder F* on the arm F, and until the door is closed, as will be hereafter
described.
The pin F³ slides upon the edge of, and depresses, the upwardly inclined lever F
(see the detail figure), the free end of which rests upon the end of a lever E'. As
the lever F is depressed, it depresses one end of the catch lever E¹, and raises
the other end of the catch 1, thereby releasing the arm E¹, which falls to its normal
position, and when the handle is released, the bolt C and the arm F2 also return
to their original position, and the door can be closed, the bolt being free to rise
and fall.
The upward movement of the arm F2 also actuates the counting mechanism, with
the first wheel of which it is connected by the link f.
It is, however, undesirable that the handle F should be free to turn as many
times as possible, because the counting mechanism would be worked every time,
and thus an inaccurate record of the number of times the compartment was used

page_text: would be given. It is also undesirable that the handle should be free until the door
is closed.
To prevent this, a locking device is provided, which consists of the lever G.
The form of this lever is shewn in the details on Sheet II. At one end is pivotted
a bolt G, which projects through the door in such position that it will strike
against the door jamb, and be pushed in when the door is closed. The other
end is formed with a U shaped piece G2, one arme of which, when in its
advanced position, lies close against the back of the arm F2. The arm F2 has
pivotted to its lower edge a catch b, which, as the arm F2 is raised above the
arm c, will be caused by a spring d to move across the top of the arm c, and
thus maintain the arm F in the raised position. The other arm of the U has a
projection G*, which, when the door is open, overlies the arm F2, and prevents its
rising until the projection is pushed on one side by the closing of the door. When
the bolt G' is pushed in by closing the door, a projection G³ on the lever G comes
under a catch e on the bolt D, and the lever G is then held until a slight upward
movement of the arm D, produced by the key, releases the lever G, which is
brought back to its normal position by a spring g & allows the arm F2 to drop.
The operation of the parts will be seen to be as follows. The normal position
of the door is, closed, and, with the exception of the bolt C, which is free to allow
of its rising and falling to close the door, all the parts are locked. It is desired to use
the compartment. The attendant, with his key, raises the arm D, the bolt C, and
the arm E, and the door is pushed open by a spring suitably arranged. On with-
drawing the key, the arm E remains in the raised position, but the arm D and
bolt Care free to fall. The door is now pushed to by the person using the
compartment, and the lever G is operated by means of the bolt G₁ striking against .
the door jamb.
The handle F can now be turned from the inside, because the projection G* on
the lever G, as well as the projection E on the raised arm E, are out of the path
of the handle arm F2, and. the bolt C can be raised to open the door, which is forced
open by the spring before mentioned.
The raising of the arm F2 registers, but the arm cannot drop, because it is caught
by the catch lever G, which is held down by the catch on D.
The parts can only be released by the attendant with his key.
It will thus be seen that the user of the compartment can register only once.
Now it is sometimes found that the attendant wishes to oblige a friend without
registering the use of the compartment, but such unauthorised user is rendered
impossible by the present invention.
It has been said before that the turning of the socket spindle to open the door,
raises not only the arm D and bolt C, but also the arm E, and that the arm E is
kept up by a catch 1 on the bottom of the case, the raising of the arm E being
effected by the lug D' of D.
It will be seen that the arm D has a second lug D2, and when the arm D
drops, on the key being withdrawn, this second lug D2 comes below the pawl a
of the lever E. Now, suppose it is desired to open the door without turning the
handle F to register, the attendant will place his key in the socket and raise the
arm D, but in doing so, he will raise the arm E onto a second catch 2 on the bottom
of the box. When this is done, the part E* of the arm E will come close under
the bolt C, and will hold it up. The bolt C cannot be released, to bolt the door,
until the attendant has gone inside the compartment, closed the door, and turned
the handle F, thus registering the user. may here remark that in some cases the
arm E and its accessories may be dispensed with the sole use of this arm being to
prevent collusion a matter of comparatively slight importance.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I would here remark
that I do not intend to confine myself to the exact details of construction above

page_text: described, as these may obviously be varied without departing from the nature of
my invention, but what I claim is :-
1. A registering lock for water-closet and other doors, in which the opening of
the door by the attendant outside, to admit a person to the compartment, and the
closing of the door for bolting, will free the registering mechanism, which can then
be operated by the person inside, when leaving the compartment, by means of a
handle on the inside, the closing of the door also ensuring the locking of the handle
when turned, and thus preventing a second registration by the same person, as
described.
2. A registering lock for water closet and other doors, in which the opening of
the door from the outside, twice consecutively by the attendant, will cause the
locking of the bolt in its raised position, from which it can only be released, to
subsequently bolt the door, by closing the door and turning the handle inside, to
register the use of the compartment as described.
3. A registering lock for water-closet and other doors, constructed, arranged, and
operating substantially as herein shewn and described.
4. In a registering lock for water-closet and other doors, the combination of a
free bolt with means for operating the same both from the outside and the inside,
and independently the one from the other, as described.
5. In a registering lock for water-closet and other doors, the combination of a
counting mechanism with means for operating the same, such means being actuated
only when the door is opened from the inside, and after the door has been opened
from the outside and is closed again, as set forth.
6. In a registering lock for water-closet and other doors, the means substantially
as herein shewn and described for locking the bolt in its raised position, when the
door is opened twice consecutively from the outside.
7. In a registering lock for water-closet and other doors, the means substantially
as herein shewn and described for releasing the bolt-operating, and the counting-
mechanism operating device.
8. In a registering lock, the means substantially as herein shewn and described,
to prevent the operating of the counting mechanism twice for one user of the
compartment.
9. A registering lock for water-closet and other doors, in which the closing of
the door unlocks the mechanism for opening the door from the inside and for
operating the counting mechanism, and also ensures the locking of the counting
mechanism after one registration, as and for the purpose set forth.
Dated this 18th day of Mov 1909
NEWTON & SON,
Agents for the Applicant.