Improvements in Locks or Catches for Doors.
Year: 1897

page_text: Improvements in Locks or Catches for Doors.
I, WILLIAM MORRELL, of 125, Carr Road, Nelson, Lancashire, Joiner, do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the construction of catches or locks
for doors, and provides a simple means by which the doors can be securely
fastened, the arrangement being also applicable for use as a simple push and
pull lock.
I propose to employ a tubular case having a plate at one end by which it is
fixed to the door. Within the outer end of this tubular case a holt is fitted,
the end of which projects through the plate and into the striking plate on the
door frame. The stem of this bolt projects some distance into the case, and this
case is formed with an internal collar through which the stem passes, this collar
preventing the bolt being withdrawn a pin being employed passing through
the bolt at its inner end and projecting slightly so as to meet the collar. The
inner part of the case is cut away at one side, and a separating piece is screwed
in place to complete the case, this plate allowing of access to the mechanism.
The case is cut away so as to form a circular recess just beyond the end of the
stem, and in this recess a ring is fitted of peculiar form. This ring lies in the
groove so that it can be turned round, but cannot shift otherwise. The ring is
formed with a ledge or flange extending through the greater part of its circum-
ference, and formed at the inner side.
formed inside the ring at the termination of the ledge this square part allowing
A square projecting portion is also
the ring to be turned by means of a key. The end of the stem of the bolt is
formed with a deep notch which is adapted when the ring is turned into the
proper position to allow the ring to project into it so that the bolt can be pushed
back, the forked end of the stem formed by the notch extending on each side
of the ring. When the ring is turned however so that the ledge is opposite to
the end of the stem, the latter cannot be pushed back, and the bolt is prevented
from being withdrawn. This arrangement allows the bolt to be locked in posi-
tion so that the door cannot open. The casing is formed with a suitable key
hole which allows the key to be passed through and to engage with the projection
at the inside of the ring. One side of the key is cut away to allow the end of
the stem to pass, so that an ordinary key will not serve to open the lock.
One side of the ring is formed with a small recess or notch into which a pin
can project, this pin being carried in the end of the case and provided with a
small spring. The ring can thus be secured in either open or locked position.
The projecting ledge at the lower side of the ring allows the ring to be turned
round through only a part of a circle, the ends of the ledge meeting stops

page_text: which limit the motion. As the end of the bolt is rounded it can be pushed
back by simply pulling or pushing the door when the ring is in an operative
position, but when the ring is turned so as to lock, the bolt cannot be pushed
back and the door is thus locked.
A spring around the stem of the bolt keeps the bolt always shot excepting
when opening and shutting the door.
It may
I may modify the form of the circular piece or ring above described.
consist of a disc with a pin at the centre on which the end of a key can fit.
Dated this 22nd day of December 1897.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.
I, WILLIAM MORRELL, of 125, Carr Road, Nelson, Lancashire, 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 follow-
ing statement:-
This invention relates to improvements in the construction of spring catches
or locks for doors, and provides a simple means by which the doors can be
securely fastened, the arrangement being also applicable for use as a simple door
catch.
I propose to employ a tubular case having a plate at one end by which it is
fixed to the door. Within the outer end of this tubular case a bolt is fitted,
the end of which projects through the plate, and into the striking plate on the
door frame. The stem of this bolt projects some distance into the case, and this
case is formed with an internal collar through which the stem passes, this collar
preventing the bolt being withdrawn, a pin being employed passing through
the bolt at its inner end, and projecting slightly so as to meet the collar. The
inner part of the case is cut away at one side, and a separating piece is screwed
in place to complete the same, this plate allowing of access to the mechanism.
The case is cut away so as to form a circular recess just beyond the end of the
stem, and in this recess a ring is fitted of peculiar form. This ring lies in the
groove so that it can be turned round but cannot shift otherwise. The ring is
formed with a ledge or flange extending through the greater part of its circum-
ference, and formed at the inner side. A square projecting portion is also
formed inside the ring at the termination of the ledge, and also a central pin,
upon which the end of a key fits, so as to turn the ring, when required, by
coming against the said projection.
The end of the stem of the bolt is formed with a deep notch, which is adapted
when the ring is turned into the proper position, to allow the ring to project
into it, so that the bolt can be pushed back, the forked end of the stem formed
by the notch extending on each side of the ring. When the ring is turned,
however, so that the ledge is opposite to the end of the stem, the latter cannot
be pushed back, and the bolt is prevented from being withdrawn. This arrange-
ment allows the bolt to be locked in position so that the door cannot open.
casing is formed with a suitable key-hole, which allows the key to be passed
through, and to engage with the projection at the inside of the ring.
The
One side of the ring is formed with a small recess or notch into which a pin

page_text: can project, this pin being carried in the end of the case, and provided with a
small spring. The ring can thus be secured in either open or locked position.
The projecting ledge at the lower side of the ring allows the ring to be turned
round through only a part of a circle, the movement of the disc being limited
in either direction as hereinafter described. As the end of the bolt is rounded
it can be pushed back by simply pulling or pushing the door when the ring is
in an operative position, but when the ring is turned so as to lock, the bolt
cannot be pushed back and the door is thus locked.
A spring around the stem of the Bolt keeps the bolt always shot except when
opening and shutting the door.
Fig. 1 of the accompanying drawings is a sectional view of my improved
catch or lock representing the same as locked. Fig. 2 is a similar view shewing
the same unlocked
A is the body or case of the lock. B the plate by means of which the lock is
secured to the door or the like. Through a hole in this plate the round head of
the bolt C passes, the shank or body of the bolt also passing through an internal
collar D formed in one piece with the body or case of the lock.
On the shank of the bolt C is mounted spiral spring E, whose extremities bear
respectively against the head of the bolt and internal collar D, so as to always
have a tendency to thrust out the bolt.
I crank the portion F of the bolt immediately beyond the internal collar D
to prevent the bolt leaving its position. This method I find more serviceable
than fitting a pin into the same, though either method may be employed.
Beyond the cranked portion, the bolt is bifurcated to stride the edge of small
disc or ring G, which fits into a circular recess in the body of the case as shewn,
so as to permit the ring or disc to be turned round, but not to shift otherwise.
The disc is formed on its face with a ledge or flange H, extending along only
part of its circular face. Other flanges J and K may be provided to serve as
wards to which the wards in the key may correspond. The disc is provided with
a central pin L, on which a key fits, the key being introduced through a key-
hole in the other half of the case or body.
The ledge or flange H or projecting portion is formed with the object of
allowing the ring or disc G to be turned round by means of a key coming
against it.
It will be obvious therefore from the above explanation, that should the disc
or ring G be brought to such a position as to obstruct the return of the head
of the bolt C, through the ordinary push or pull on the door the same would
be locked. This is exactly the case as shewn in Fig. 1, the head of the bolt C
being prevented from yielding to external pressure by the obstructing flange J.
At the same time, a small stud M working through a slot N and acted upon by
spiral spring 0 enters a small notch P in the disc G, and prevents accidental
displacement of the disc, when the door has been locked. Fig.
represents the
lock unlocked, the disc or ring G in this case having been turned by the key
coming against a flange H, so as to bring the flange well out of the way of
the bifurcated extremity of the bolt C. The lock may now be used as an ordinary
spring door catch. The disc is locked in this position by the stud M entering
notch 1 (see Fig. 2).
The disc G is turned by the key through only a part of its circumference, the
spring stud M being only allowed to pass the notches P and P in one direction.
This is clearly shewn in Fig. 3, from which it will be seen that the stud M can
only take the bevilled or rounded portion of the notches P and P¹ respectively,
the opposite straight side of the said notches, in each instance, preventing the
movement of the disc in that direction.
Fig. 4 illustrates the method which I employ of constructing the case of the
lock, which is formed in two halves A A, the mechanism being inserted previous
to the case being fastened together. The case is formed with overlapping flange Q,
which is secured by serews to the end S. It is also provided with projecting

page_text: nib R, which enters hole S in the other half of the casing, when screws are
also inserted in holes in the flange B to fasten the two halves together at this end.
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
I claim is:-
1. The improved construction of spring catches or locks for doors or the like,
substantially as described and illustrated.
'
2. In spring catches or locks for doors, providing the same with rotary disc G
provided with flanges on its face to prevent the return of bolt C, and furnished
with retaining stud M to retain the disc in the required positions, substantially
as described and shewn.
3. In spring catches or locks for doors, the formation of internal collar D,
and cranking of the bolt C in combination with the disc G, the said bolt being
bifurcated to stride the said disc, substantially as described and illustrated.
Dated this 14th day of September 1898.
RICHMOND & Co.,
Chartered Patent Agents, 12, Standish Street, Burnley.
RICHMOND & Co.,
Chartered Patent Agents, 12, Standish Street, Burnley.