или Fixing and Recording Action of same.
Year: 1887

page_text: Date of Application, 29th Oct., 1887
Complete Specification Left, 29th Aug., 1888
Complete Specification Accepted, 5th Oct., 1888
или
Fixing and Recording Action of same.
1, JAMES HOGG AMOUR of 360 Dumbarton Road, Glasgow in the County of
Lanark, Scotland, Engineer, do hereby declare the nature of this invention to be as
follows:-
My Invention has for its object to construct and fix a Log for Ships in an
improved manner and so that it will register accurately in rough or smooth water;
also that the distance will be registered on a dial or dials fixed on the Bridge or other
point or points desired on board the ship, so that the distance run can be seen thereat ;
also so that all the parts of the Log are clear of Steamers propeller to avoid danger
of being damaged or carried away when Engines are suddenly reversed.
The Invention comprises a revolving screw or vane working inside a tube or casing,
which is made so as to be capable of being pushed or withdrawn through a cock
or other equivalent device fixed on ships shell, so as in action to revolve by outer
water. The screw is geared with a spindle which may directly actuate a registering
device, or be fitted with a cam or cams so as to actuate alternately two valves or cocks
on a pipe or chamber under air pressure or vacuum.
In lieu of said pneumatic modes, the distance registers may be actuated by means
of the cams alternately making and breaking contact between two wires under electric
action or circuit, so as to work an Electro or other Magnet which shall actuate the
Registers or otherwise, said spindle cams may actuate a wire leading to aforesaid
registers and pulled back by a spring or otherwise, so as to actuate dial registers
according to revolutions of Log screw or vane.

page_text: Fixing and Recording Action of same.
1, JAMES HOGG AMOUR of 360 Dumbarton Road, Glasgow, in the County of
Lanark Scotland, Engineer, 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 :-
My said Invention has for its object to construct and fix a Log for Ships in an 5
improved manner, so that it shall register accurately in rough or smooth water, and
so that all the parts thereof shall be clear of Steamships own propellor, to avoid
danger of being damaged or carried away when Engines are suddenly reversed; and
also so that the distance run will be registered on a dial or dials fixed at a distance
on the bridge or other point or points desired on board the ship.
And in order that my said Invention may be properly understood and the system,
mode or manner in or under which the same is or may be used or practically carried
into effect I have appended an explanatory sheet of Drawings whereon Fig. 1
represents an elevation of the main part of the Log as fitted on inside of ship, and
Fig. 2 a plan thereof. The other Figs. represent details hereinafter referred to. The 1
same reference letters or numerals on Drawing represent the same or similar parts.
m has a
The Log as constructed according to my said Invention comprises a cock a made
of brass or other suitable material, and is fitted in the engineroom or other
convenient part of ship to the inside of the outer plating or hull & thereof, preferably
low down about turn of the bilge. The cock is formed with a box or chamber a¹ on
one side having bolted thereon a suitable cover c, the other side a² being bolted (or
fixed otherwise) watertight to the hull b of the ship. The plug d of the cock can
be turned by fitting a handle or key on head d' of plug, and has a rectangular passage
through it corresponding to the inside of cock and chamber aa¹. A spindle
fork at one end carrying a small fan, screw or propellor g whose axis (fans) is
parallel to the keel of the ship. The fan g may work in a tube or casing (not shown)
to prevent the rolling of the ship from affecting its motion. The outer end of a
spindle has fixed thereon a worm wheel which is actuated by a worm k on the boss
of the said fan. The spindle fork is fitted to slide inside the rectangular passage or
opening in the chamber and cock and is made free to pass right through from the
chamber a¹ to the other end of the cock attached to the shipside, a hole being cut in
the plate of the ship, corresponding to the passage through the cliamber and
the cock.
:
The inner end of the forked spindle m and small spindle i project respectively
through stuffing Boxes h. 1. on the cover c, into the inside of the ship. The inner end
of the spindle m being hollow and screwed inside is fitted with a screw e fitted to
cover c by frame so as to be incapable of moving otherwise than by twining by
hand-wheel n. When turned in one direction the screw e pushes the spindle m from
1

page_text: The
inside the chamber a and thereby also the fan 9, through the passage in the plug d
and opening in shipside, till the said fan projects some distance beyond side
of ship; or vice versa, the fan can be withdrawn inside ship. The inside end of
spindle is fitted with two cams o p which actuate respectively the valve' levers'q r
fitted respectively on pins s. t. projecting from frame u fixed to cover c.
fráme u has formed thereon a vacuum valve v with coupling branch v' to which a pipe
(not shown) is fitted and led to the Condenser of Engine or other convenient vacuum
producer, and worked by lever g.. To said valve v is connected the end of another
pipe w having an air valve thereon, worked by crank-léver. The pipe to ends
in a coupling w¹ to which a pipe (not shown) is fitted and led as most convenient to
the branch 7 Fig. 3 of one or more cylinders & fitted on bridge or other desired point
of ship.
The cylinder 8 Fig. 3, has a piston and rod which are normally kept up by the
spring 10. The bracket 11 on cylinder carries one end of a lever 12, the other end of
which is jointed to the pawl lever 13 by the link 14 which may be shifted to the
various holes 15 to vary the lift of pawl 16 which actuates in a well known way tho
works of an ordinary Counter or registering apparatus connected therewith. In lieu
of the cylinder 8 being constructed as shown, it may be made and fitted similarly to
that of a Richard's Engine Indicator.
g
IN
When the Ship enters a Dock, River, or Canal the forked spindle carrying the
fan is by means of the wheel and screw e drawn into the chamber a past the
plug d which is then shut. If it is necessary to examine the fan the cover c of the
chamber a can be unbolted and along with fan g &c. removed if the plug d is shut ;
the water being thereby dobarred from entering ship.
When the ship proceeds to sea and the Log is required to be used, the cover
carrying fan &c. is bolted watertight on chamber a', then the plug d is opened truc
with the passage of the chamber, and by means of hand wheel n and screw e the
fan 9 is pushed out through the passage till it is some distance clear of the
ship's side.
The action of the Apparatus hereinbefore described is as follows. As the ship moves
through the water, the water causes the fan y to' revolve in proportion to ship's speed.
The worm
Krevolves the worm wheel j and spindlo i and cams
° P. The
cam o opens the valve by means of the lever q admitting the vacuum from the
condenser to the pipe w laid to the cylinder 8, Fig. 3 on Bridge or other desired point.
The air being thereby exhausted from pipe 0 and cylinder 8 the piston and rod 9 is
forced down (causing compression of spiral spring 10) carrying with it the levers
12 & 13 and pawl 16 the distance of the pitch of one tooth into which the pawl falls.
The cam o having now moved sufficiently to allow the vacuum valve v to close the
connection from the condenser, the other cam p now presses the crank-lever rand opens
the air valve on pipe w thereby admitting air thereto and destroying the vacuum;
the spiral spring 10 raises the piston 9 to its normal position carrying with it the
levers 12 & 13 and pawl 16 thereby actuating the rachet wheel through the distance
of the pitch of one tooth. The cam p having now moved past the air valve lever
allowing valve to close, similar motions as before described take place at each
revolution of the cam spindle i.
The speed of the rachet wheel to that of the Fan can be varied by shifting link 14
(or otherwise in any well known way) so as to set the register pointer to indicate
correctly as is first found by actual trial, the distance run.
In lieu of the Pneumatic system hereinbefore described for actuating the counter
at a distance from Log, an Electrical system illustrated by Fig.
may be used,
wherein an Electro Magnet or Coil 20 may be fitted at or near the Counter on bridge
or other desired place and connected by wires 22 23 connected to the log cover c
respectively by metallic studs 26 25, said studs being insulated from each other.
The Magnet 20 has a core 21 which is fitted to the lever 12 which actuates a
counter in similar manner to that shown and described with reference to fig. 3. When
the wires 22 and 23 are electrically disconnected the electric circuit (which is supplied
in any of the ordinary well-known ways) is broken and the core 21 lowers by gravity

page_text: and thereby also the lever 12. The circuit is made or broken by means of one end of
the spring 24 being raised or lowered into or out of contact with metallic point 26;
the other end of spring being fixed to stud 25. The spring 24 is raised by a single
camp. in this system on spindle i of Log which as the said spindle i revolves makes or
breaks the electric circuit, which actuates the core 21 and thereby also lever 12
which works the counter.
In lieu of or supplementary to, fitting and working a Counter at a distance from
Log, the spindle i may be made in any ordinary manner to work a Counter connected
to Log.
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―
1st. The arrangement, combination & construction of apparatus whereby al
revolving fan or screw g may be passed through ship's hull under water line while in
water, substantially as and for the purpose described.
2nd. A Ship's Log consisting of a Cock a having chamber a', a revolving fan or
screw and a Counter actuated thereby, all arranged, combined and operating,
substantially as described & shown.
3rd. In combination with a ship's log, for recording at a distance therefrom,
Pneumatic or electric mechanism, arranged, combined and operating as described and
illustrated.
Dated this 5041.
1000
DAVID MASON,
Patent Agent, Glasgow.