IMPROVEMENTS IN APPARATUS FOR FINDING DISTANT POINTS AND LOCALITIES WITH THE TELESCOPE
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by Alfred Julius Boult at the Office of
the Commissioners of Patents on the 20th July 1882. Communicated to him
from abroad by Julius Wenzel of Strassburg in the German Empire.
ALFRED JULIUS BOULT of the firm of W. P. Thompson and Boult Agents
for Foreign Patent Solicitors, of 323 High Holborn in the County of Middlesex
and 6 Lord Street Liverpool in the County of Lancaster, Engineer, IMPROVEMENTS
IN APPARATUS FOR FINDING DISTANT POINTS AND LOCALITIES WITH THE
TELESCOPE. A communication to him from abroad by Julius Wenzel of
Strassburg in the German Empire
This Invention relates to an improved apparatus whereby distant places or
objects when once found can easily and rapidly be brought into the field of vision
of a Telescope and may be used either at a fixed outlook or (as it is very portable)
may be utilized in travelling, it will likewise be applicable for ascertaining, by
means of a chart or index thereon what point is in the field of vision at any time
and this will be useful at fire stations for instance for the purpose of finding the
place in which a conflagration is taking place and for similar purposes.
One form of this Apparatus consists of an upright cylinder with a suitable base
(the whole being approximately of the shape of a cup or chalice) having set screws.
for adjustment.
On the lower part of said Cylinder a broad ring or hoop is free to rotate. A knob
on said ring serves for turning it round. Opposite to the knob a stud or pin
projects from the hoop and carries a graduated segment and also a ring or hoop
which serves to receive a telescope which can thus rotate in a vertical plane around
the pivot and in a horizontal plane (with the hoop) round the Cylinder. When the
Telescope is rotated in a vertical plane the extent of this motion is indicated, by a
suitable mark or index, on the graduated segment, whilst the said segment itself
serves as an index for showing the extent of motion round the cylinder on a scale
marked on the latter. Now when the proper horizontal and vertical adjustment of .
the telescope for any place within its range is found, they are marked preferably
on a paper covering the upper part of the Cylinder and by replacing the Telescope
into the same position which can, by means of the record made as stated, be easily
631...מ

page_text: effected, the place can with facility be found again, and when the Telescope shows a
place the record will give, say its name and position.
The Telescope instead of being mounted at the side of the Cylinder may be
mounted at the top thereof and it will in this case be mounted in a fork allowing
its vertical motion whilst its horizontal motion is effected by rotating the platform
which carries it round the axis of the upright cylinder, the other arrangements are
substantially the same, although slightly varied to suit the altered position of the
Telescope.
When mounted on the top of the Cylinder the Telescope may carry a hinged arm
from which a point projects, in this case the graduated scales may be dispensed
with and holes or recesses be made on the Cylinder to fix the point of the pendent
arm in, and these holes being marked indicate the spots to be found.
Provision may be made on the Cylinder which will allow the Telescope to be
placed at the side or at the top as desired.
In the body or the foot of the Cylinder a plumb line or a spirit level may be
placed to allow the same to be set parallel with the horizon and also a compass to
set the Telescope by,