Improvements in Apparatus for Closing Water Tight Bulkhead Doors in Steam Ships.
Year: 1896

page_text: Date of Application, 4th Aug., 1896
Complete Specification Left, 11th Sept., 1896-Accepted, 17th Oct., 1898
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Closing Water Tight Bulkhead
Doors in Steam Ships.
I, THOMAS MOODIE, of Earnock Villa, Hamilton, in the County of Lanark,
Colliery Manager, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object the provision of improved apparatus for closing
water tight bulkhead doors in steam ships, the apparatus being adapted to be
brought into operation from the bridge or engine room or other part of the ship.
The improved apparatus comprises an electric motor the armature spindle of
which is tubular and has fitted through it so as to revolve with it a rod or spindle
connected by a suitable joint either direct or through levers or other gear to the
bulkhead door.
The rod or spindle is screw threaded part of its length and passes through a uut
or stationary screw threaded block, and by the rotation of the rod with the
armature the rod is traversed end wise to the extent necessary for closing the
bulkhead door, the armature spindle and the rod within it being for this purpose
connected by a long key and feather. The electric motor is brought into operation
by the officer on the bridge or in the engine room or elsewhere switching on current
from the ship's dynamo or other source of supply, conductors and suitable switches
being provided for the purpose; and when the desired extent of traverse has been
attained for closing the door the motor is automatically stopped by the traversing
rod acting on a switch to break the electric circuit.
Dated this 3rd day of August 1896.
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62 St. Vincent Street, Glasgow, Agent for the Applicant.
Improvements in Apparatus for Closing Water Tight Bulkhead
Doors in Steam Ships.
1. THOMAS MOODIE, of Earnock Villa, Hamilton, in the County of Lanark,
Colliery Manager, 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 has for its object the provision of improved apparatus for closing
water tight bulkhead doers in steam ships, the apparatus being adapted to be
brought into operation from the bridge or engine room or other part of the ship.
The improved apparatus which is illustrated by the accompanying drawings,
Fig. 1 of which is a sectional elevation, and Fig. 2 a plan of the apparatus,
comprises an electric motor the armature spindle A of which is tubular and has
fitted through it and keyed so as to revolve with it a rod or spindle B connected

page_text: by a suitable joint C. either direct as shewn or through levers or other gear to the
bulkhead door D.
The rod or spindle B is screw threaded part of its length and passes through a
nut or stationary screw threaded block E, and by the rotation of the rod B with
the armature spindle A the rod is traversed endwise to the extent necessary for
closing the bulkhead door D, the armature spindle A and the rod B within it being
for this purpose connected by a key G fitted in the armature spindle A and
entering a long groove H in the rod B. The electric motor is brought into
operation by the officer on the bridge or in the engine room or elsewhere switching
on current from the ship's dynamo or other source of supply, conductors and suitable
switches Y being provided for the purpose; and when the desired extent of traverse
has been attained for closing the door the motor is automatically stopped by the
traversing rod B acting on a switch F to break the electric circuit X.
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 :-
Apparatus for closing water tight bulkhead doors in steam ships, consisting of
an electric motor the armature spindle of which is arranged to rotate a screwed
spindle for traversing the door substantially as described.
Dated this 10th day of September 1896
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62 St. Vincent Street, Glasgow, Agent for the Applicant.