Improvements in Locks and Latches.
Year: 1889

page_text: Date of Application, 8th Jan., 1889
Complete Specification Left, 8th May, 1889-Accepted, 14th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in Locks and Latches.
We JOHN AMBROSE ROWSE, of Torpoint, Devonport in the county of Cornwall,
Draughtsman, and WILLIAM VIGAR HARRIS of Torpoint in the County of Cornwall,
Ironmonger, do hereby declare the nature of this invention to be as follows:-
Our invention relates to that class of locks or latches which are provided with a
catch adapted to be operated by a knob or handle, and the object of my invention is
to provide a lock or latch which can be more easily operated than locks or latches as
heretofore constructed.
According to our invention the handle for operating the catch is made in two or
more parts so arranged that when the said handle is grasped the said parts will be
moved relatively to each other, this movement being transmitted by a lever or other
suitable means to the catch to withdraw the same.
In practice we find it advantageous to make the handle in two parts one of which
is fixed to the door or the like to which the lock is applied, while the other part is
pivoted to the fixed part and provided with a lover arm or extension engaging with
the catch.
If it is desired to provide for locking the catch so that it cannot be withdrawn by
the compression of the knob or handle, we advantageously. place the lock within the
handle itself so that the bolt or bolts thereof, when shot, will lock the parts of the
handle relatively to each other. We may however employ any other locking device
of suitable construction.
•
It will be obvious that we can arrange my improved lock or latch to be operated
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1
COMPLETE SPECIFICATION.
Improvements in Locks and Latches.
We, JOHN AMBROSE ROWSE, of Torpoint, Devonport, in the county of Cornwall,
Draughtsman, and WILLIAM VIGAR HARRIS, of Torpoint aforesaid, Ironmonger
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:
"
Our invention relates to locks or latches, and it comprises the improvements
hereinafter described.
According to our invention the handle for operating the catch or bolt is made in
two or more parts so arranged that when the said handle is grasped the said parts
will be moved relatively to each other, this movement being transmitted by a lever or
other suitable means to the catch to withdraw the same.
In practice we find it advantageous to make the handle in two parts one of which
is fixed to the door or the like to which the lock is applied, while the other part is
pivoted to the fixed part and provided with a lever arm or extension engaging with
the catch.
If it is desired to provide for locking the catch so that it cannot be withdrawn by
the compression of the knob or handle we advantageously place the lock within the
handle itself so that the bolt or bolts thereof, when shot, will lock the parts of the
handle relatively to each other. We may however employ any other locking device
of suitable construction.

page_text: It will be obvious that we can arrange our improved lock or latch to be operated
from both sides of a door.
To enable our invention to be fully understood we will describe the same with
reference to the accompanying drawings, in which
Figure 1 is a face view of a portion of a door having our improved lock applied
thereto, and
Figure 2 is an edge view of the same.
Figure 3 is a section on the line, a Figure 1.
Figure 4 is a view similar to Figure
position.
but showing the parts in a different
Figure 5 is a section on the line y, y Figure 3 showing mechanism for locking the
parts of the handle relatively to each other.
Figure 6 is a view similar to Figure 5, but showing the parts locked.
Figure 7 is a view of the catch and the holder containing the same.
Figures 8 and 9 are views at right angles to each other of one of the parts of the
knob or handle, and,
Figures 10 and 11 are similar views illustrating a modification.
In the drawings we have represented a lock or latch having a knob or handle on
each side of the door, but in the description, for the sake of brevity, we have referred
to a single knob only. Similar letters however illustrate similar parts in both knobs
or handles and in all the Figures. a is the knob and b is the bolt or catch the latter
being fitted into a cylinder or casing e and normally pressed outwards by a spring d
arranged within the said cylinder or casing between the end thereof and the
bolt b.
The knob or handle a is formed in two parts e, f, the part e being provided with a
flange g by means of which it is secured to the door a' by screws g' while the part f
is pivotted to the part e by the pin h and provided with an arm or lever i the free end
of which enters a recess in the bolt band passes through a slot in the casing c.
We preferably form upon the flange g a tongue or projection 2 which enters a
recess g³ in the door, the said tongue or projection being used in addition to the
screws g¹ to prevent a turning movement of the handle. It will be noticed by
reference to the drawings that the parts e, f of the handle are hollow, and that one
part can enter the other; so that when the knob or handle is grasped the lever i will
move the bolt against the pressure of the spring d and out of engagement with the
door frame.
m is a lock which is located inside the knob a and secured to the part e. The
bolt n of the said lock is so adjusted that when shot it will bear against the inside of
the part, as shown in Figure 6, and so prevent the said part from being moved
relatively to the part e. It is to be understood as hereinbefore stated that locking
mechanism of any suitable construction may be employed and that it may be arranged
in connection with any other part of the lock instead of with the knob.
In order to adapt our lock to. doors of different thicknesses we sometimes make the
arm or lover separate from the movable part of the handle or knob and connect it
thereto by means of screws o or the like, as shown in Figures 10 and 11, so that the
length of the said arm or lever can be adjusted. We can also make the movable part of
the knob or handle in the form of a stud or button which will be depressed when
the knob is grasped and so operate the lever.
. Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we
claim-is-
.
1. A lock or latch the knob or handle of which is provided with a movable por-
tion, adapted to be operated when the said knob or handle is grasped by the hand,
the motion of the said movable portion being utilized for operating a latch or bolt,
substantially in the manner described.
2. A door lock or catch, the handle or knob of which is made in two portions
one of which is movable and works in connection with a lever in such a manner

page_text: that when the said handle or knob is grasped the lever will be operated, substantially
as and for the purpose, described.
3. The manufacture and use of door locks or latches of the kind substantially as
hereinbefore described and illustrated in the accompanying drawings.
Dated the 8th day of May 1889.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.