mimpi King Compass Card.
Year: 1895

page_text: Date of Application, 3rd Dec., 1895
Complete Specification Left, 26th Aug., 1896-Accepted, 3rd Oct., 1896
mimpi King Compass Card.
JOHN WILSON GILLIE Compass and Nautical Instrument Maker of the New
Quay, North Shields in the County of Northumberland do hereby declare the
nature of this invention to be as follows:
Whereas it has been found most desirable that a compass card should be as
light as possible, and that what weight there is should be placed as far from the
centre of the card as possible, also that a ring compass card inclined towards the
observer is more easily read than a horizontal disc card, I take a long narrow strip
of paper about an inch wide, on which has been accurately printed the usual
compass points and degrees, and which has been cut to such curves that when
formed into a circular ring with the two short edges touching, the two longer edges
lie in two parallel planes and the card itself resembles a truncated cone; and that
whereas hithertoo it has been found necessary to slit the paper prints of light cards
in order to prevent the cards from warping through change of atmospheric
conditions, owing to the outer edges of the paper prints being cemented to the
metal rims, I support my paper ring printed and cut as aforesaid by a very narrow
aluminium ring or band which has been carefully shaped to fit a conical surface of
the same size and shape as the paper ring. I pierce holes through both the
aluminium ring or band and the paper ring and weave a thread or threads through
these holes to similar holes in a small centre disc or boss of aluminium, and after
adjusting the various thread spokes so that they are all equally long and tight,
I secure the end or ends of the thread or threads by knotting and shellacing, and
so fasten the aforesaid paper compass ring print to the aluminium ring in such
a way that it is securely supported thereby and yet has a certain freedom
of movement. I in this way avoid the necessity of cementing or pasting the
paper print and so lessen the liability to warp with change of temperature or
humidity.
I prefer to place the directing magnetic needles in an aluminium frame slung
by threads from the aluminium ring, a little beneath the jewelled aluminium cap
fitting in the aluminium boss aforesaid.
If found necessary I may. connect the outer aluminium ring to the centre
aluminium boss by wire spokes and secure the paper compass ring print to the ring
by means of thread or small paper fasteners, instead of carrying the threads right
through to the centre boss.
Dated this 2nd day of December 1895.
pompass varu,
JOHN WILSON GILLIE Nautical Instrument Maker of the New Quay, North
Shields in the County of Northumberland 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:-
The object of my invention is to provide an improved compass card, which may

page_text: combine if possible the greatest legibility with the least weight and the maximum
directive force and slowness of vibration, whilst at the same time of such con-
struction as to be sufficiently rigid when exposed to the sun or to different climatic
or atmospheric conditions or when handled.
It is well known that hithertoo it has been found necessary to slit the paper
prints of light compass cards in order to prevent them warping, by my invention
I avoid this necessity, and in so doing, produce a card the points of which for this
and other reasons are more easily read.
In fully describing my invention I will refer to the accompanying drawings
which form part of this specification and in which similar numerals of reference
indicate similar parts wherever found throughout the drawings.
Fig. 1 is a plan view of my improved compass card and shows also a method of
supporting the same.
Fig. 2 is a sectional side view thereof.
Fig. 3 is a view of the compass print before being rounded up, half size.
In the practice of my invention I take a long narrow strip preferably of paper
about an inch wide, on which has been accurately printed the usual compass points and
degrees, and which has been cut to such curves, see Fig. 3, that when rounded up
into a circular ring with the two shorter edges touching, the two longer edges lie
in two parallel planes and the card itself is inclined nearly at right angles to the
line of sight. I provide a central boss 7, which is preferably composed of
aluminium and circular in shape, from which I suspend or to which I attach a
band 2, also preferably composed of aluminium, by means of radial threads or
wires 4, which are preferably composed of silk and which are connected with the
band 2 in any desired manner, the band 2 baving first been carefully shaped to fit
a conical surface of the same size and shape as the ring print 3 when latter is
rounded up.
I may attach the aforesaid ring print 3 to the aforesaid band 2 in
any desired manner, but I avoid gumming or pasting the same thereto and prefer
to attach it by laying the ring print 3 inside the aluminium band and passing the
radial threads or wires 4 through both simultaneously, the aluminium band 2
having previously been pierced with suitable holes, and I prefer to connect the
edges of the ring print 3 by aluminium fasteners 8. The arrangement first
described of the supporting and connecting threads or wires is shown in Fig. 2,
where th of the ring print 3 and band 2 is removed in order that the arrangement
may be the better understood. In some cases I may attach the ring print 3 to the
annular band 2 by means of fasteners made preferably of a narrow strip of sheet
aluminium folded together as shewn at A. similar in principle to an ordinary paper
fastener. The central boss 7 has a central hole in which is fitted the usual
aluminium cap, containing the jewel which rests on the supporting pivot.
The directing magnets 1111 prefer to support in an aluminium frame 6 which
I prefer to suspend from the band 2 by threads 5 connecting with the outer corners
thereof and with the band 2 at the cardinal points.
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-
(1) In mariners compass cards, a plain annular ring compass print inclined
nearly at right angles to the line of sight of the observer, supported by or attached
to and stiffened by a narrower annular band as described herein.
(2) A plain annular ring compass print as described herein supported by and
attached to a narrower annular band which is attached to a central boss containing
a jewelled centre and a frame suspended below supporting a plurality of directing
compass needles substantially as and for the purposes herein set forth.
and
or
(3) A plain annular ring compass print as described herein supported by
attached to a narrower annular band which is attached to a central boss containing
a jewelled centre and a frame suspended below supporting a plurality of directing

page_text: compass needles substantially as and for the purposes herein set forth, the said
plain annular ring compass print being of paper and the said band, central boss
and frame being of aluminium, and the said compass print being attached to and
supported by the said aluminium band by means of silk threads.
Dated this 19th day of August 1896.
JOHN WILSON GILLIE.