Improvements in Locks for Railway and other Carriage Doors.
Year: 1893

page_text: Date of Application, 26th Sept., 1893
Complete Specification Left, 25th June, 1894-Accepted, 28th July, 1894
PROVISIONAL SPECIFICATION.
Improvements in Locks for Railway and other Carriage Doors.
We SAMUEL WILKES of 44 The Green, Bloxwich, and JONAH WILKES of
26 Sand Bank, Bloxwich, in the County of Stafford, Lockmakers, do hereby
declare the nature of this invention to be as follows:-
The invention has for its object improvements in locks for the aforesaid purposes
which have a double action, namely a latching and a locking one.
As the springs in the locks now in use with a double action upon one bolt have
to be made of considerable strength to overcome the resistance of the handle to.
the latching, it having to turn part of a circle with it causes a great amount of
friction and increased wear to the locks.
To dispense with this, in our improvements we make the latching action separate
from the locking one which enables us to use a weaker spring and the doors can
be closed without using so much force as in the locks previously mentioned.
The latch bolt we make to move on its own axis taking a bearing in one side
of the lock case through the centre of which axis a bearing is made for the locking.
bolt to turn in on the one side, and the cover plate or box part of lock (as the case.
may he) on the other, and moves over it in a circular direction into the locking
and unlocking position.
To keep bolts in position we employ two levers working on a pin fixed in the
lock case one above the other actuated by springs formed in such a manner that
they act as if made from two leaves of steel giving more security than if made.
from one only.
On turning the handle the latch is withdrawn from the striking plate by a
projection formed upon the locking bolt in such a manner as to engage with it and
it is forced back into position for latching again by the pressure from one of the
levers and springs, or we may make a spring or springs to act directly upon it
without using a lever.
Dated this 25th day of September 1893.
SAMUEL WILKES,
JONAH WILKES.
COMPLETE SPECIFICATION.
Improvements in Locks for Railway and other Carriage Doors.
We SAMUEL WILKES of 44 The Green, Bloxwich, and JONAH WILKES of
26 Sand Bank Bloxwich, in the County of Stafford Lock Manufacturers 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 bas for its object improvements in locks for the aforesaid
purposes which have a double action, namely a latching and a locking one.
As the springs in the locks now in use with a double action upon one bolt have
to be made of considerable strength to overcome the resistance of the handle to
the latching, it having to turn part of a circle with it causes a great amount of
friction and increased wear to the locks.
To dispense with this in our improvements we make the latching action separate
[Price 8d.1

page_text: from the locking one, which enables us to use a weaker spring and the doors can be
closed without using so much force as in the locks previously mentioned.
The latch bolt we make to move on its own axis taking a bearing in one side of
the lock case, through the centre of which axis a bearing is made for the locking
bolt to turn in on the one side, and the cover plate or box part of lock (as the case
may be) on the other, and moves over it in a circular direction into the locking
and unlocking position.
To keep bolts in position we employ two levers working on a pin fixed in the
lock case, one above the other actuated by springs formed in such a manner that
they act as if made from two leaves of steel giving more security than if made
from one only.
On turning the handle the latch is withdrawn from the striking plate by a
projection formed upon the locking bolt in such a manner as to engage with it,
and it is forced back into position for latching again by the pressure from one of
the levers and springs or we may make a spring or springs to act directly upon it
without using a lever.
.
On referring to the drawings
Fig. 1. shews internal part of lock the cover plate being removed.
Fig. 2. the front plate of lock.
Fig. 3. the latch bolt.
Fig. 4 the locking bolt.
a. is the case or box part of lock, b. the latch bolt shown in position for latching
the door, c. the locking bolt in position for drawing in the latch bolt, the dotted
lines showing its position when door is locked, d. small lever & spring acting upon
the latch bolt, e. lever & F spring acting upon locking bolt, c, to keep it in the
locked & unlocked position.
Having now particularly described and ascertained the nature of our inven-
tion and the manner the same is to be performed, we declare that what we
claim is
1. The construction of lock as herein described & illustrated by drawings.
2. The locking bolt taking its bearing in latch working from a centre hole in
lock case.
3. The springs in combination with levers to keep bolts in position.
Dated this 23rd day of June 1891
Fig. 3. the latch bolt.
. Fig. 4 the locking bolt.
a. is the case or box part of lock, b. the latch bolt shown in position for latching
the door, c. the locking bolt in position for drawing in the latch bolt, the dotted
lines showing its position when door is locked, d. small lever & spring acting upon
the latch bolt, e. lever & F spring acting upon locking bolt, c, to keep it in the
locked & unlocked position.
Having now particularly described and ascertained the nature of our inven-
tion and the manner the same is to be performed, we declare that what we
claim is
1. The construction of lock as herein described & illustrated by drawings.
2. The locking bolt taking its bearing in latch working from a centre hole in
lock case.
3. The springs in combination with levers to keep bolts in position.
JONAH WILKES.
SAMUEL WILKES.