Year: 1887

page_text: Date of Application, 16th July, 1887
Complete Left, 27th Mar., 1888
Complete Accepted, 27th Apr., 1888
We SAMUEL WILKES and JONAH WILKES of Excelsior Works 44 The Green
Bloxwich in the County of Stafford, Lock Manufacturers do hereby declare the nature
of this invention to be as follows:-
This invention refers to locks which are ordinarily used upon the doors of railway
and other carriages; whereby we obtain both a striking and locking action upon one
bolt, as hereafter stated.
The bolt turns out in a circular direction through the front or fore-end of the
lock, which plan is an old one; but in referring to our invention, namely,―that of two
actions upon one bolt, these actions we produce in the following manner-namely―
In order to produce this double action, on the bottom and side of the bolts, and
adjacent to the axis upon which they turn, we form two projecting surfaces a short
distance apart, and through these surfaces in about the centre of the thickness of the
bolt, we cut or cast a groove, and in this groove we employ two circular rollers or
discs, which are secured to the bolts by means of pins passing through them and the
centres of the projecting surfaces therein.
We next employ a spring having its end turned upwards in a circular form and
bent or turned again in the the shape of an-U-so that the sides of it are nearly
parallel to each other, and this spring takes its bearing in the back of the inner part of
the lock, the action of which is as follows-
When the bolt is out in a locked position the first roller, nearest the middle of the
bolt's width, lies at the back of the turned up circular end of the spring, the force
or pressure of which holds it firmly in that as well as the following positions-When
the bolt is again turned from this position into that from which it is intended to receive
its striking action the end of the spring is between the two rollers, and in closing the
door the projecting end of the bolt being forced in by pressing against the striking
plate in the frame of the door, the second roller moves partly over the end of the end
of the spring, until opposite the hole for its reception in the striking plate, when the
pressure of the spring forces it out again into its former position, and another turn
securely doubly locks. the door.

page_text: COMPLETE SPECIFICATION.
-
Improvements in Locks for Railway and other Carriage Doors.
We SAMUEL WILKES and JONAH WILKES of Excelsior Works 44 The Green
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 refers to locks which are ordinarily used upon the doors of
railway carriages, whereby we obtain both a striking and a locking action upon one
bolt as hereafter stated.
The bolt turns out in a circular direction through the front or fore-end of the lock,
which plan is an old one, but in referring to our invention, namely that of two
actions upon one bolt, these actions we produce in the following manner-In order to
produce this double action, in the bottom and side of the bolt, and adjacent to the axis
upon which they turn, we form two projecting surfaces-A. A¹-Fig. 1. a short
distance apart, and through these surfaces in about the centre of the thickness of the
bolt, we cut or cast a groove-B. B-Fig. 3—and in these grooves we employ two
circular rollers or discs C. C. Fig. 1 which are secured to the bolt by means of
pins D. D-passing through them and the centres of the projecting surfaces
thereof.
We next employ a spring or springs having its or their ends turned upwards in a
circular form E-and bent or turned again in the shape of an U-F so that the sides
of it are nearly parallel which each other, and this spring takes its bearing on the
back of the inner part of the lock case-G. G-the action of which is as follows:-
When the bolt is out in a locked position the first roller-A-nearest the middle of
the bolts width lies at the back of the turned up circular end of the spring—F—the
force or pressure of which holds it firmly in that as well as the following positions.
When the bolt is again turned from this position into that as shewn at Fig. 1.
from which it is intended to receive its striking action the end-E-of the spring is
between the two rollers-A. A¹-and in closing the door the projecting end-H-of
the bolt being forced in by pressing against the striking plate on the frame of the
door, the second roller-A¹-moves partly over the end of the spring, until the bolt
is opposite the hole for its reception in the striking plate, when the pressure of the
spring forces it out again into its former position, and another turn securely doubly
locks the door.
In order to obtain an extra thickness of bolt to increase the striking surface, we
form a recess-I-Fig. 1-in the plate of the lock and a corresponding one in the cap
or cover-plate of the same, and increase the thickness of the bolt as shewn in
Figs. 2 and 3.

page_text: DESCRIPTION OF DRAWINGS.
Fig. 1-shews the lock with cover-plate removed.
Do. 2. is an end section.
Do. 3. is a back view of bolt.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is―
1-The production of a double action upon one bolt by the employment of rollers
therein, working upon the end of a spring or springs substantially as herein described
and illustrated by the accompanying drawings.
2-The forming of recesses in the cover-plate and back plate of the lock case to
allow of an increase in the thickness of bolt substantially as herein described and
illustrated by the accompanying drawings.
23
W. H. ST. AUBIN,
Agent for Applicants.