Year: 1898

page_text: Date of Application, 13th Aug., 1898
Complete Specification Left, 22nd Sept., 1898-Accepted, 24th Oct., 1858
DANIEL FRANCIS COGHLAN, of 2, Lilyville Road, Fulham, London, S.W., School-
master, do hereby declare the nature of this invention to be as follows:-
This invention consists of a lock and bolt. The bolt always protrudes unless
held back. In the act of slamming or closing the door while the bolt protrudes,
the bolt separates two plates bevelled to facilitate ingress of the bolt. After the
bolt has passed between the plates,, the plates close and the bolt is secure. The
shape of the bolt is such as to allow easy passage of the bolt. The door is opened
either by pulling back the bolt into the door against the spring or the like; or
by lifting the bolt and turning it into the door by means of a handle.
The plates may, or may not be closed by means of springs.
This 1141.
J
1000
1, DANIEL FRANCIS COGHLAN, of 2, Lilyville Road, Fulham, in the County of
London, Schoolmaster, 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 consists of a lock and bolt. The bolt always protrudes unless
held back. When it protrudes, in the act of slamming or closing the door, the
bolt opens or separates two plates bevelled to facilitate ingress. When the bolt
has passed between the plates, the plates close together and the bolt is secure.
The shape of the bolt is such that it easily passes between the plates. The door
is opened either by pulling back the bolt against the spring or the like, or by
lifting the bolt and turning it into the door by turning a handle. The plates may
or may not be closed by springs.
And in order that my invention may be thoroughly understood I now proceed
to describe the accompanying drawing thereof, reference being had to letters and
figures marked thereon.
Fig. 1, is a side elevation of the lock with a curved pivoted bolt.
Fig. 2, is a plan of a sliding bolt.
1

page_text: Fig. 6, is a side view of the sliding bolt.
In Fig. 1, I construct a lock case a with a suitable cavity and in this said
cavity I place two sliding blocks c and c. The sliding block cat the bottom
is supported by a spiral, V, or other spring d, and the top sliding block c falls
loosely on the bottom block on its knife edge f. The case has an opening f
(as seen by Fig. 3) so that the bolt g may pass between the blocks e and c¹. The
bolt used in this figure is of a curved shape and works on the centre pin h.
In Fig. 2, I form a straight sliding bolt i fitted to a case j operated by a spiral
spring and handle Z.
In Figs. 3, and 4, I construct a lock similar to that above described for Fig. 1,
with the exception in these cases, I form the blocks and c¹ with stop pieces m
which in action when the bolt strikes the splayed ends, the blocks c and c¹ open
in order to allow the bolt i to arrive in its locked position; the stop pieces is pre-
vented travelling only a certain distance by means of stops n constructed in the
lock case.
In Fig. 5, is an alternate pattern sliding bolt i fitted into a case j with a
spring and handle, the said bolt is provided with a tail end o, and a notched
end to engage with a catch if required. Guide pins e¹ may be fitted to either
block if required to operate in slots e¹ or openings cut in the case of either lock.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is: -
Τ
1. In carriage door bolts and locks, the combination, construction and' arrange-
ment of the various parts of mechanism for the purpose specified in the above
specification and according to Fig. 1, of the illustrated drawing.
2. In carriage door bolts, the combination, construction and arrangement of
the various parts of mechanism for the purpose specified in the above specification
and according to Fig. 2, of the illustrated drawing.
3. In carriage door bolts and locks, the combination, construction and arrange-
ment of the various parts of mechanism for the purpose specified in the above
specification and according to Fig's. 3, and 4 of the illustrated drawing.
4. In carriage door bolts, the combination, construction and arrangement of
the various parts of mechanism for the purpose specified in the above specification
and according to Fig's. 5, and 6, of the illustrated drawing.
Dated this 22nd day of September 1898.
J. P. BAYLY,
18, Fulham Place, London, W., Agent for the Applicant.