Improvements in Locks and Latches.
Year: 1898

page_text: Date of Application, 6th Jan., 1898
Complete Specification Left, 18th Mar., 1898-Accepted, 16th July, 1898
PROVISIONAL SPECIFICATION.
Improvements in Locks and Latches.
WILLIAM SAMUEL JOHNSON, Lock Manufacturer, 19, Queen Street, Glasgow,
do hereby declare the nature of this invention to be as follows:-
My invention consists partly of rollers or wheels applied to the latch bolt of
mortise and rim locks and latches, whereby the friction in working is reduced
to a minimum, and further by a hinge applied in the most suitable place on the
forend or face plate of a mortise lock or latch, or by making the forend in two or
more parts, so that one part may be removed after the lock is fixed to the door,
for the purpose of oiling the interior of the lock.
In order that my invention may be more clearly understood, the drawings
herewith have been prepared.
Figures 1, 2, 4 are views in elevation of the interiors of locks constructed
according to my invention.
In Fig. 1, 4, are 3 wheels or rollers A between which the latch bolt moves.
In Fig. 2, are two wheels A1 fixed in slots, cut out of the latch bolt, and
upon these wheels the latch bolt moves.
Fig. 3, shows a section of the latch bolt in Fig. 2 showing the slots for the
wheels.
Fig. 1, 2, 5, shews the hinged forend D closed, by removing the screw E the
forend can be opened on the hinge C.
Fig. 4, shows the forend D open, which gives access to the oil holes B, in the
inner forend, through which the oil can be applied to the interior of the lock.
Dated this 4th day of January 1898.
improvещение
WILLIAM SAMUEL JOHNSON, Lock Manufacturer, 19, Queen Street, Glasgow,
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 consists partly of rollers or wheels applied to the latch bolts of
mortise and rim locks and latches, whereby the friction in working is reduced
to a minimum, and further by a hinge applied in the most suitable part to the
face plate or forend of a mortise lock or latch, or by making the face plate or
forend in two or more parts, so that one part may be conveniently removed after

page_text: the lock or latch is fixed to the door, for the purpose of oiling the interior of the
lock or latch.
In order that my invention may be more clearly understood, the drawings
left with the Provisional Specification have been prepared.
Figures 1, 2, 4 are views in elevation of the interior of locks constructed
according to my invention.
In Fig. 1 & 4 are 3 wheels or rollers A, between which the latch bolt moves.
In Fig. 2, are two wheels Al fixed in slots, cut out of the latch bolt, and
upon these wheels the latch bolt moves.
Fig. 3, shows a section of the latch bolt in Fig. 2, showing the slots for
the wheels.
Fig. 1, 2, 5 shows the hinged forend D closed, by removing the screw E, the
forend can be opened on the hinge C.
Fig. 4, shows the forend D open, which gives access to the oil holes B, in the
inner forend, through which the oil can be applied to the interior of the lock.
I do not restrict myself to the exact shape or configuration or arrangement
of parts and I do not claim as novel the use of a wheel or roller.
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:-
1st. The construction of a hinge joint to the forends of mortise locks and latches
as shown in Figures 1, 2, 4, 5, or any mere modification thereof.
2nd. The construction of a hinged forend, by hingeing the outer forend to the
inner forend, at any suitable place.
3rd. The hingeing a single forend to the lock case.
4th. Making the forend in 2 or more parts, whereby one part may be removed
for oiling the lock.
5th. The application of rollers to the latch bolts of locks and latches as shown
in drawings Figures 1, 2, .4.
6th. The general construction and arrangement of wheels or rollers, and the
hinged forend, as described and illustrated by the several drawings, or any mere
modification thereof.
Dated this 17th day of March 1898.
WILLIAM SAMUEL JOHNSON.