Doors and the like.
Year: 1887

page_text: Date of Application, 17th June, 1887
Complete Left, 6th Mar., 1888
Complete Accepted, 27th Apr., 1888
Doors and the like.
I ELI TAYLOR of 64 Princess Street Derby in the county of Derby, Locksmith,
do hereby declare the nature of this invention to be as follows:-
In constructing my improved lock which is specially applicable for railway carriage
doors and the like, I arrange between a pair of plates, a sliding bolt, having formed
therein a groove something resembling the shape of a heart and I arrange a boss
with a recess or hole to fit the key to open the lock, and carrying a tongue or projec-
tion fitting the bottom recess of the "heart" so that on turning the boss or
projection the sliding bolt is capable of movement.
The bolt carries a pin projecting from one edge and on this I pivot a hinged
pawl having one end projecting beyond the outer edge of the sliding bolt and its
inner end formed with a catch or tooth and carrying a spring adapted to press against
one of the lock plates.
On said plate carrying the aforesaid mechanism and bolt and the said hinged
pawl I arrange an incline. I also arrange a strong spring to press against the
bottom of the sliding bolt and normally tend to force the same outward.
The pawl and sliding bolt work between cheeks placed between the plates.
Upon unlocking the door, lid, shutter, or the like by passing the key into the
said boss, the tongue or projection carried thereon draws back the sliding bolt
until the front edge thereof is flush with the top plate of the lock. The pawl is also
drawn in and its inner end rides up the aforesaid incline and is forced over the sanie
by means of the spring carried by the pawl which bears on the side plate of the
lock thus keeping the sliding bolt until the outer end of the pawl is forced down by
the act of closing the door. This of course releases the catch or tooth from the
inclined plane on the slide plate of the lock and the strong spring forces out the
sliding bolt so locking the door, lid, shutter, or the like.
POPPLEWELL, COLTON & Co.,
· Agents for the Applicant.

page_text: Doors and the like.
I, ELI TAYLOR of 64 Princes Street, Derby in the county of Derby, Locksmith,
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:-
In order to fully describe the nature of my said invention and the manner of
performing the same I have caused to be annexed to this specification the accom-
panying sheet of drawings and now refer to the figures and letters of reference
marked thereon. Figure 1 is an elevation of a lock constructed according to my
invention with its striking plate seen from the inside of a carriage door, the inner
plate being removed so as to shew the parts of the lock seen in elevation.
Figure 2 is a plan on line a b of Fig. 1 looking upwards. The inner and outer
plates are here both shewn in soction. The door is supposed to be closed in both
cases.
In constructing my improved lock which is specially applicable to railway carriage
doors and the like I arrange between a pair of plates A. B. a sliding bolt C, having
formed therein a groove or recess D, somewhat resembling the shape of a heart, and I
arrange a moving or turning boss E with a recess or hole F to fit the key or the
handle stem to open the lock and carrying a tongue or projection G fitting the end
or narrow recess of the "heart" groove or recess D). As shewn this is upward
though I might arrange it to be downward, in which case the key or handle would
turn the reverse way.
By turning the boss or projection G the sliding bolt is capable of movement.
The bolt carries a pin H projecting from one edge (as in Figure 2 its lower edge)
and on this I pivot a pawl I having one end K projecting beyond the outer edge of
the sliding bolt and its inner end L formed with a catch or tooth M and carrying a
sprig N secured to it by a pin, rivet or otherwise and adapted to press against one of
the lock plates A. On the plate B I arrange an incline O. I also arrange a strong
spring P (see Fig. 1) to press against the bottom of the sliding bolt C and normally
tend to force the same outwardly.
The other end of the spring P is secured as at Q to the lock plates or frame.
R is the striking plate recessed at S for the movement therein of the pawl I in
opening and shutting the door.
The striking plate R has a slightly projecting part T where the end of the pawl K
strikes, the remainder of the slot being in shewn dotted lines as at U see Fig. 2.
The Dawl I and sliding bolt C work between cheeks placed between the plates A
and B.

page_text: Upon unlocking the door by passing the key into the boss E and turning the same
(or the handle) the tongue or projection G carried thereon draws back the sliding
bolt C until the front edge thereof is flush with the top plate of the lock.
The pawl I being pivoted to the bolt C is also drawn in and its inner end M rides
up the aforesaid incline O on the plate B and is forced over the same by the spring N
carried by the pawl and which spring bears and slides on the said plate A of the lock
thus keeping back the sliding bolt C, the incline O holding the pawl by its tooth M
and with it the bolt C to the plate B. On slamming or shutting the door the outer
end K of the pawl I engages with the striking plate R upon the slightly projecting
part T which causes the pawl to turn on its pin H on the bolt Cand its tooth M is
released from the incline O on the plate B. The strong spring P then forces out the
sliding bolt so locking the door. Instead of a mounted handle attached to a key or
stem permanently fitting the boss E detachable keys can of course be used. The
lock is applicable to other slam-to doors, shutters lids, gates, windows or the like
purposes.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
First In a slam-to lock the combination of a sliding bolt moved by a key or
handle-turned boss engaging with the said bolt as described, a rocking pawl pivotted
on the edge of the said bolt and carrying a tooth or pawl capable of riding on and
engaging with an incline provided on one of the lock plates; springs to set up the
sliding bolt and the rocking pawl, and a striking plate to operate the latter as set
forth.
Second-The improved construction and arrangement of lock substantially as
described and illustrated in the accompanying drawings.
POPPLEWELL, COLTON & Co.,
17 & 18, Southampton Buildings, London, W.C.,
Agents for the Applicant.