Improvements in or connected with Marine Compasses.
Year: 1899

page_text: Improvements in or connected with Marine Compasses.
1, JOHN DAVID CASTLE, of 12, Lister Street, Hull, in the County of York-
shire, Compass Manufacturer, do hereby declare the nature of this invention
to be as follows;-
-
.
My invention relates to the mounting of ships compasses, and has for its
object preventing the disturbing of the normal condition of the compass when
placed in position on board, by the vibration or movement of the vessel.
Hitherto when a ships compass has been placed in position on board a vessel
the vibration or disturbing influence of such vessel has so altered the normal
condition of the compass as to make it difficult to obtain a correct reading of
such compass, thereby rendering. it almost impossible to ascertain and determine
the right course in which to steer the vessel; with my invention this is entirely
obviated as when once the compass is placed in position the vibration of the
vessel, whether resulting from the working of the engines or any other cause
does not affect in any way whatever the normal condition of the compass which
will thus remain- reliable so that a correct course can be steered.
For the purpose of my invention I employ a bow bracket or half hoop fitted
with sockets to take the gimbal shoulders or studs which form the pivots on
which the compass swings.
I further employ, suspenders consisting of calgut or other flexible material
r. substance which is connected to eyebolts or hooks with adjustable thumb-
screws or the like for tightening up the suspenders, two of which suspenders
are used which run either fore and aft or athwart the binnacle or box in which
the compass is contained, the bow bracket or half hoop aforesaid being sus-
pended from the centre of the catgut or other suspenders and being fixed in that
position.
·
The binnacle cup or flange or the binnacle stand may be fitted with a square
base to act as a receptacle for the suspenders and for the tension adjustment
device.
.
This method of mounting the compass obviates the disturbance of the normal
condition of such compass under circumstances as described above.
mated this. Third dex of Tenu 1.800.

page_text: Improvements in or connected with Marine Compasses.
I, JOHN DAVID CASTLE, of 12, Lister Street, Hull, in the County of York-
shire, Compass Manufacturer, 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 the mounting of ships compasses, and has for its
object preventing the disturbing of the normal condition of the compass when
placed in position on board by the vibration or movement of the vessel.
Hitherto when a ships' compass has been placed in position on board a vessel
the vibration or disturbing influence of such vessel has so altered the normal
condition of the compass as to make it difficult to obtain a correct reading of
such compass, thereby rendering it almost impossible to ascertain and determine
the right course in which to steer the vessel, with my invention this is entirely
obviated as when once the compass is placed in position the vibration of the
vessel whether resulting from the working of the engines or any other cause
does not affect in any way whatever the normal condition of the compass which
will thus remain reliable so that a correct course can be steered.
DESCRIPTION OF DRAWINGS.
Fig. 1 represents a front view of a binnacle stand showing square base or
frame which contains suspenders and bow bracket.
Fig. 2, represents an under side view of square base or frame with suspenders
and bow bracket, and
Fig. 3, represents a sectional view of Fig. 2 on line A, B.
For the purpose of my invention, I employ a bow bracket or half hoop A
provided with sockets or holes B to take the gimbal shoulders or studs C (Fig. 1)
which form the pivots on which the compass D swings.
I further employ suspenders E consisting of catgut or other flexible material
or substance, as for instance, spiral springs which is or are connected to eye-
bolts or hooks F with adjustable thumbscrews or the like G for tightening up
the suspenders, two of which suspenders are used, which run either fore and
aft or athwart the binnacle or box in which the compass D is contained, the bow
bracket or half hoop aforesaid being suspended from the centre of the catgut
or other suspenders E and being fixed in that position.
The binnacle cup or flange or the binnacle stand J may be fitted with a
square base or frame K to act as a receptacle for the suspenders, and for the
tension adjustment device, the suspenders E and the bow bracket A being pre-
ferably mounted in such a base or frame.
If desired the thumbscrews may be dispensed with and the eyes which take
the suspenders screwed up tight to the inside of the frame K.
This method of mounting the compass obviates the disturbance of the normal
condition of such compass under circumstances as above described.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. In connection with marine compasses the employment of flexible sus-
penders mounted in a frame on the binnacle stand and having a bow bracket to
take the gimbal studs of the compass and with or without thumbscrews for
adjustment in the manner and for the purposes substantially as shown and
described.
4

page_text: 2. Hanging the compass in a bow bracket such as A from flexible suspenders
such as E, mounted or not in a frame or base such as K, as desired, in the
manner and for the purposes substantially as shown and described.
Dated
G J
12 .
15
1000
JOHN E. WALSH,
Savile Street, Hull, and Crossley Street, Halifax,
Patent Agent for the Applicant.