Improvements in connection with Ships' Telegraphs.
Year: 1892

page_text: Date of Application, 3rd Mar.. 1892-Accepted, 30th Apr.. 1892
Improvements in connection with Ships' Telegraphs.
1. HENRY ENDALL of 101, Hubert Grove, Stockwell, London, S.W. Ship's:
Officer 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 invention relates to improvements in ship's telegraphs and has for its object
to enable the captain of a ship to obtain more information than heretofore, that is.
to say to ascertain as soon as he has given an order as to the direction in which the.
ship is to be propelled whether his orders are being faithfully executed by the
engineer below or not.
It is a well known fact that in the manoeuvring of ships when entering a port.or
harbour a succession of different orders as to the forward or backward motion or
stoppage of the ship are sent by the captain on deck to the engine room and that
sometimes in the hurry or excitement of the moment, although the captain's order
is answered properly on the dial of the telegraph apparatus on deck yet the engine
is propelled in the wrong direction thus causing the ship to come into collision with
the pier, quay, and the like and considerable damage to be effected.
Now my invention has for its object to prevent the occurrence of such mistakes.
by showing on the dial of the apparatus the direction in which the engine shaft is
turning so that the captain may quickly remedy the mistake before the ship has.
received a fair impetus.
In the accompanying drawings
Fig. 1 is a front view of the dial and part of the stand of a ship's telegraph
provided with my improvements.
Fig. 2 is an elevation at a smaller scale of the dial and stand showing its connec-
tion with the engine shaft.
Fig. 3 is an end view of the engine shaft furnished with my improved
mechanism.
Figs. 4 and 5 are details.
Like letters of reference indicate corresponding parts throughout the figures.
According to my invention erect opposite the front end of the engine shaft S a
stands carrying a lever pivoted at and controlled by the springs g the lower
ends of which slide in the recess of the said lever.
A pin is fixed in any suitable manner in one end of the shaft S so as to bear
when the latter is revolving either upon the top of the lever or underneath the
same.
The lever is furnished at each end with perforated tabs t serving as means of
attachment for the two ends of an endless wire or chain we passing over the pulley
or drum (Fig. 1) furnished with a central axis upon which is fixed the index or
pointer moving upon a semi circular dial d screwed upon the bottom of the dial D
of the telegraph apparatus which is otherwise of ordinary construction and comprises.
a stand Ba handle H and an index 1 both moving upon the dial D divided as
clearly shown in Fig. 1.
When the shaft revolves in the direction indicated by the arrow a (Fig. 3) the
pin p depresses the right hand end of the lever and with it the corresponding.
extremity of the chain whereby the index (Fig. 1) is turned in the direction
indicated by the corresponding arrow a, but when the shaft revolves in a contrary
direction ie. in that of the arrow a' the pin p bears under the right hand end of the
said lever and raises that end thus causing the index (Fig. 1) to turn in the
direction indicated by the corresponding arrow a'.

page_text: The captain will therefore be able to ascertain on the dial d whether an order
given by him has been properly executed by the engineer in the engine room.
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,
:
The improved means and mechanism for indicating on the dial of a ship's telegraph
the direction of rotation of the engine shaft constructed arranged and operating sub-
stantially as herein described and show.
Dated this 3rd day of March 1892.
HUGHES, ELI & HUGHES,
76, Chancery Lane, W.C., Agents for the Applicant.