Improvements in Locks and Bolts.
Year: 1895

page_text: Date of Application, 4th Apr., 1895
Complete Specification Left, 4th Jan., 1896-Accepted, 8th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in Locks and Bolts.
We FRANK SMITH of 227 Moseley Road in the City of Birmingham and
CHARLES GRAY SMITH, of 38 Edith Road, West Kensington, Locksmiths and Art
Metal Workers, do hereby declare the nature of this invention to be as follows:-
Our invention partly relates to locks and bolts made under Patents No. 3227
A.D. 1888 and No. 21224 A.D. 1891. That part relating to Patent No. 3227
of 1888 consists in the following improvements.
Firstly. The follower with indicating handle is made with a roller or rollers to
reduce the friction and yet, so that it indicates correctly the position of the bolt.
Secondly. A special arrangement of the lever to semaphore indicator, by which
the semaphore is thrown quite square or at right angles from its starting point.
That part relating to Patent No. 21224 of 1891 consists in applying to a vertical
or other bolt a lever and. link arrangement which makes them secure from any
pressure on the bolt itself but by a pressure on a knob or the action of a lever the
links are displaced and the bolts withdrawn by one or more motions.
Another improvement is that when the bolt is made to shoot itself with a spring
the follower is made in a peculiar manner with the spring and cam or back follower
acting from the side nearest the fore end or front of the lock, enabling the
handles to be much nearer the lock case.
A further improvement consists in applying to a vertical or other bolt when fixed
to the edge of a door a cover jointed or hinged to close, or made to slide so as to
protect the thumb piece of the bolt from being tampered with.
Dated this 2nd day of April 1895.
HENRY F. TALBOT,
7 Cherry Street, Birmingham, Agent for the Applicants.
We, FRANK SMITII of 227 Moseley Road in the City of Birmingham and
CHARLES GRAY SMITH of 38 Edith Road, West Kensington, Locksmiths and
Art Metal Workers, 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, reference being had to the accompanying
sheets of drawings and to the letters and figures marked thereon :—
Our invention chiefly relates to locks and bolts made under Patents No. 3227
A.D. 1888 and No. 21224 A.D. 1891, and consists of the following improvements.
Firstly. The follower with indicating handle is made with a roller or rollers to
reduce the friction and yet, so that it indicates correctly the position of the bolt.
Secondly. When the bolt is made to shoot itself with a spring the follower is
made in a peculiar manner with the spring and cam or back follower acting from
the side nearest the fore-end or front of the lock, enabling the handles to be much
Dearer the end of the lock case.

page_text: :
Thirdly. A special arrangement of the lever to a semaphore indicator by which
the semaphore is thrown quite square or at right angles from its starting point.
Fourthly. Applying to a vertical or other bolt a lever and link arrangement
which makes them secure from any pressure on the bolt itself, but by a pressure
on a knob or the action of a lever the links are displaced and the bolts withdrawn
by one or more motions.
Fifthly. Applying to a vertical bolt when fixed to the edge of a door, a cover,
jointed or hinged to close, or made to slide so as to protect the thumbpiece of the
bolt from being tampered with.
Figs. 1 and 1, 2 and 24 show a lock with follower C and indicating handle A
with a roller D to reduce friction and by a special form or cutting of the bolt B
that it correctly indicates the position the bolt B is shot into.
Figs. 3 and 3 show a lock of the ordinary kind with the follower C made in a
peculiar manner and fixed in a special way in the front of the latch B the spring A
and back follower D being nearest the front plate enabling the handle to. be
nearer the end of lock and specially that the end of lock may be of circular
form.
'
Figs. 4 and 4 show an improvement in the semaphore indicator by a special
arrangement of the lever H by which the movement of the bolt G throws the
semaphore F quite square.
Figs. 5 and 5 show the same omitting the lever H using simply the spindle I.
Fige. 6 and 6 show an arrangement of lever and links applied to a vertical
bolt B and B' in such a manner that bolt B and B cannot be forced open from
either top or bottom but by the action of the ordinary knob or bandle C the links
are displaced and the bolts withdrawn.
Figs. 7 and 7 show an alternative motion, the link D having an eccentric slot E
in which a stud in the lever A works. This lever is attached to the haudle C and
withdraws the bolts B and B'.
Figs. 8 and 8 show a flush bolt fixed in the edge of door in the ordinary way
the thumbpiece A being covered by the hinged cover B so that the bolt C cannot
be tampered with, the cover B is provided with a stud D so that the bolt C must
be securely shot before the cover B can be closed, the cover B may be hinged on
one side if preferred or made to slide.
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. Roller applied to a special form of indicating follower and bolt as described.
2. Follower with back follower and spring applied in front of the latch.
3. Semaphore indicator made to open quite square as described.
4. Application of links to secure bolts and release action.
5. Application of single link for same purpose with eccentric action.
6. A cover applied to a flush bolt to prevent tampering.
Dated this 3rd day of January 1896.
FRANK SMITH.
CHARLES G. SMITH.