AN IMPROVE- AS TEMRAVE Locke WAD RAILWAY CARRIAGE AND OTHER DOORS
Year: 1874

page_text: LETTERS PATENT to Felix Jones, of Birmingham, in the County of
Warwick, Manager of Works, for the Invention of "AN IMPROVE-
AS TEMRAVE
Locke WAD RAILWAY CARRIAGE AND OTHER DOORS."
Scaled the 13th April 1875, and dated the 23rd October 1874.
PROVISIONAL SPECIFICATION left by the said Felix Jones at the
Office of the Commissioners of Patents, with his Petition, on the
23rd October 1874.
I, FELIX JONES, of Birmingham, in the County of Warwick, Manager
of Works, do hereby declare the nature of the said Invention for
"AN IMPROVEMENT OR IMPROVEMENTS IN LOCKS FOR RAILWAY CARRIAGE AND OTHER
DOORS," to be as follows:-
Locks for railway carriage and other doors as ordinarily made consist
of a lever bolt, which is maintained in its fastened and unfastened
positions respectively by the action of a strong spring pressing upon a
lever, and the latter upon the edge of the bolt. The said spring is
sometimes made to press directly upon the bolt, and is sometimes
provided with an antifriction roller, through which the pressure is trans-

page_text: mitted. The pressure of the said spring and roller wears away the edge
of the bolt, and impairs the action of the lock.
.
My Invention consists in constructing certain parts of the said locks
in the manner hereinafter described, whereby the lock is made very
strong and durable, and the friction on the moving parts is reduced to a
minimum.
Instead of making the spring lever bear upon the edge of the lock bolt
directly or through an antifriction roller, as usual, I connect the said
spring lever to the lock bolt by means of a swivel or link joint. I effect
this by making near the end of the bolt an eye or knuckle, and making
on the free end of the spring lever a similar eye or knuckle. By means
of side links connected by pins passed through the said eyes or knuckles
and rivetted the lever and lock bolt are swivelled or jointed together.
The links described of the swivel or joint work in openings or cut-away
parts in the sides of the lock case, the said openings having such a shape
as will permit of the motion of the said links when the bolt is shot or
withdrawn
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Felix Jones in the Great Seal Patont Office on
the 19th April 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FELIX
JONES, of Birmingham, in the County of Warwick, Manager of Works, a
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of October, in the
year of our Lord One thousand eight hundred and seventy-four, in
the thirty-eighth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Felix Jones, Her
special license that I, the said Felix Jones, my executors, admini-
strators, and assigns, or such others as I, the said Felix Jones,

page_text: my executors, administrators, and assigns, should at any time agrec
with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"AN IMPROVEMENT OR IMPROVEMENTS IN LOCKS FOR RAILWAY CARRIAGE AND
OTHER DOORS," upon the condition (amongst others) that I, the said
Felix Jones, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and scals, should
particularly describo and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the same
to be filed in the Great Scal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Felix Jones, do hereby declare the
nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say :-
Locks for railway carriage and other doors as ordinarily made consist
of a lever bolt, which is maintained in its fastened and unfastened
positions respectively by the action of a strong spring pressing upon a
lever, and the latter upon the edge of the bolt. The said spring lever is
sometimes made to press directly upon the bolt, and is sometimes
provided with an antifriction roller, through which the pressure is trans-
mitted. The pressure of the said spring and roller wears away the edge
of the bolt, and impairs the action of the lock.
My Invention consists in constructing certain parts of the said locks
in the manner herein-after described, whereby the lock is made very
strong and durable, and the friction on the moving parts is reduced to a
minimum.
Instead of making the spring lever bear upon the edge of the lock
bolt directly or through an antifriction roller, as usual, I connect the
said spring lever to the lock bolt by means of a swivel or link joint. I
effect this by making near the end of the bolt an eye or knuckle, and
making on the free end of the spring lever a similar eye or knuckle.
By means of side links connected by pins passed through the said eyes
or knuckles and rivetted the lever and lock bolt are swivelled or jointed
together, or a single middle link or a double or forked link may be used.

page_text: Ine links described OL MIC SWIver or joint work in optomgs
parts in the sides of the lock case, the said openings having such a shape
as will permit of the motion of the said links when the bolt is shot or
withdrawn.
Besides locks for railway carriage doors my Invention may be applied
to locks for other doors, such as the doors of cabs, dog carts, and private
carriages..
I will now describe with reference to the accompanying Drawing the
manner in which my Invention may be carried into effect.
.
Figures 1 and 2 represent elevations (the lock plate being removed)
of a lock for a railway carriage door provided with my Invention, Figure
1 representing the bolt of the lock in its withdrawn position, and Figure 2
the same in its shot position; Figure 3 is an edge view of the bolt and
lever of the same. a is the bolt turning on the hollow axis b, as usual;
c is the lever jointed at c³ to the lock caso; and d is the strong spring,
the free end of which bears upon the lever c. By means of the spring d
bearing on the lever c, and the latter being connected to the bolt a, tho
said bolt is maintained in its shot and withdrawn positions respectively.
The end of the spring lever c is connected to the bolt a near the joint
upon which the said bolt works by a swivel or joint at c.
The said
swivel or joint consists of a link e, one end of which is fitted between
the knuckles a², a², on the bolt a, and the other end takes into a slot at
cs in the end of the spring lever c. By means of pins passed through
the holes in the knuckles a², a³, and end c³ of the lever c, and corre-
sponding holes in the link e, and rivitted, the said lever is jointed or
swivelled to the bolt. The position which the link e takes when the bolt
is shot is shewn in Figure 2.
Figure 4 represents in elevation, and Figure 5 in edge view another
arrangement for jointing or swivelling the spring lever to the bolt. In
this arrangement a broad knuckle f is made on the end of the bolt, and
a knuckle g of a corresponding width is made on the end of the spring
lever c, the said knuckles f, g, being connected together by rivetting
side links h, h, thereto, the rivets forming the centres on which the links
turn; or instead of two side links, as last described, a forked link of the
kind represented in elevation in Figure 6, and edge view in Figure 7, may
be used for jointing or swivelling the spring lever to the bolt. The forked
end of this link embraces the knuckle on the end of the spring lever c,

page_text: and the middle knuckle k on the opposite end of the said link passes
between side knuckles 2, 1, on the bolt a.
The engaged parts g, i, and k, l, are jointed together by passing pins
through them, and rivetting the said pins. The shape of the forked link
is best seen in the edge view Figure 7.
The links h, h, Figures 4 and 5, and the parts i, i, and I, 1, Figures 6
and 7, work in openings or cut away parts in the sides of the lock case,
the said openings having such a shape as will permit of the motion of
the said parts when the bolt is shot or withdrawn:
Having now described the nature of my Invention, and the manner
in which the same is to be performed, I wish it to be understood that I
claim as my Invention, the improvement or improvements in locks for
railway carriage and other doors herein-before described and illustrated
in the accompanying Drawing, that is to say, connecting the lever bolt
of the said locks to the end of the spring lever by which the required
pressure is maintained on the said bolt by means of a swivel or link joint
constructed substantially as described and illustrated.
In witness whereof, I, the said Felix Jones, have hereunto set my
hand and seal, this Seventeenth day of April, in the year of our
Lord One thousand eight hundred and seventy-five.
Witness,
RICHARD SKERRETT,
Olerk to George Shaw,
Birmingham.
FELIX JONES. (L.S.)