improvements relating to wapo wa
Year: 1899

page_text: Date of Application, 14th Mar., 1899
Complete Specification Left, 14th Dec., 1899-Accepted, 3rd Mar., 1900
improvements relating to wapo wa UIAU LAIK
I, Captain ALFRED JOHN LOFTUS, (Count Nehtate), Ex-Hydrographer to the
King of Siam, of Ban Phra Nehtate, Grosvenor Road, Handsworth, in the County
of Stafford, do hereby declare the nature of this invention to be as follows: —
My invention has for its objects the production of sea charts, maps, and the
like, so arranged as to indicate the longitude in time east or west of the meridian
of Greenwich, and further to so arrange a chart on Mercator's projection that
the whole course of a vessel in the circumnavigation of the world may be readily
apparent, and to combine with the said chart information useful to navigators.
In carrying my invention into effect I preferably so arrange the chart of the
world that Great Britain appears both on the right and left hand sides of the
sanie. This method shows two meridians of Greenwich and enables the course of
the ship to be traced, from, say London, round the world to London again,
whether the ship travels in an easterly or westerly direction.
At the bottom of the chart I mark an astronomical longitudinal scale, divided
into twenty four hour spaces, each space being equivalent to fifteen degrees; the
hour spaces are subdivided into minutes. The spaces are numbered, commencing
at the meridian or mean noon of Greenwich on the right or east side of the chart,
and travelling forward consecutively in the manner of the apparent travel of the
sun, that is from east to west, until the twenty-fourth hour is indicated at the
meridian of Greenwich on the west or left side of the chart.
On the equator line the hours are numbered consecutively from either side of
chart until the twelth hour or midnight of Greenwich is reached.
At the top of the chart the geographical degrees are indicated in the ordinary
manner, 180° east and west longitude of Greenwich falling with midnight at
Greenwich.
At any suitable position on the chart I arrange a diagram composed of circles
representing the dial of a chronometer, nautical almanac time, and time at ship
or place respectively, whilst au outer enclosing circle indicates astronomical
longitude, the periphery of each circle being preferably divided into twenty-four
spaces representing hours. The meridiaus of Greenwich at the east and west
ends of the chart are symbolized by figures of Britannia drawn back to back.
I insert at the sides of the chart lists of coaling and cable stations, repairing
docks, and other information useful to mariners. For convenience in readily
ascertaining the name of the chart I place the title on both ends, in such a
manner that on unrolling the name of the chart is at once clearly seen.
Dated th 1911 down of Wash
1900
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, & 25, Cross Street, Manchester,
Agents for the Applicant.

page_text: I, CHARLOTTE MARIA LOFTUS, Executrix of the late Captain Alfred John Loftus,
(Phrá Nidesa Jaladhi) Ex-Hydrographer to the King of Siam, of Ban Phrá
Nebtate, Grosvenor Road, Handsworth, in the County of Stafford, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
My invention has for its objects the production of sea charts, maps, and the
like, so arranged as to indicate the longitude in time east or west of the meridian
of Greenwich, and further to so arrange a chart on Mercator's projection that
the whole course of a vessel in the circumnavigation of the world may be readily
apparent, and to combine with the said chart information useful to navigators.
In carrying my invention into effect I preferably so arrange the chart of the
world that Great Britain appears both on the right and left hand sides of the
same. This method shows two meridians of Greenwich and enables the course of
the ship to be traced, from, say London. round the world to London again,
whether the ship travels in an easterly or westerly direction.
At the bottom of the chart I mark an astronomical longitudinal scale, divided
into twenty four hour spaces, each space being equivalent to fifteen degrees; the
hour spaces are subdivided into minutes. The spaces are numbered, commencing
at the meridian or mean noon of Greenwich on the right or east side of the chart,
and travelling forward consecutively in the manner of the apparent travel of the
sun, that is from east to west, until the twenty-fourth hour is indicated at the
ineridian of Greenwich on the west or left side of the chart.
On the equator line the hours are numbered consecutively from either side of
chart until the twelth hour or midnight of Greenwich is reached.
At the top of the chart the geographical degrees are indicated in the ordinary
manner, 180° east and west longitude of Greenwich falling with midnight at
Greenwich.
At any suitable position on the chart I arrange a diagram composed of circles
representing the dial of a chronometer, nautical almanac time, and time at ship
or place respectively, whilst an outer enclosing circle indicates astronomical
longitude, the periphery of each circle being preferably divided into twenty-four
spaces representing hours. The meridians of Greenwich at the east and west
ends of the chart are symbolized by figures of Britannia drawn back to back.
I insert at the sides of the chart lists of coaling and cable stations, repairing
docks, and other information useful to mariners. For convenience in readily
ascertaining the name of the chart I place the title on both ends, in such a
manner that on unrolling the name of the chart is at once clearly seen.
In the production of a chart whereon can be delineated an unbroken track
from any port or place on the earth's surface in either direction to any other port
or place, or from any port or place round the world either in an easterly or
westerly direction to the starting place again, I show three meridians, respectively
in the centre and at or near the right and left sides of the chart, the spaces
between such meridians being each divided into twenty-four parts representing
hours and subdivided into minutes, as hereinbefore described.
of the world is set out on each side of the central meridian, and the scale is pre-
A complete chart
ferably extended to represent fifty two hours in all.

page_text: 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:-
-
1. Improved sea charts, maps, and the like, indicating the longitude in time
east or west of the Greenwich or other meridian, and arranged substantially as
and for the purposes described.
2. A chart whereon can be delineated an unbroken track from any port or
place on the earth's surface in either direction to any other port or place, or round
the world from any port or place in an easterly or westerly direction to the starting
place again, substantially as described.
ՆԱՄՆ 1037
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, & 25, Cross Street, Manchester,
Agents for the Applicant.