GB190622767A - Improvements in Apparatus for Orientating or Determining the Direction or Relative Positions of Points upon a Map or Territory. - Google Patents

Improvements in Apparatus for Orientating or Determining the Direction or Relative Positions of Points upon a Map or Territory.

Info

Publication number
GB190622767A
GB190622767A GB190622767DA GB190622767A GB 190622767 A GB190622767 A GB 190622767A GB 190622767D A GB190622767D A GB 190622767DA GB 190622767 A GB190622767 A GB 190622767A
Authority
GB
United Kingdom
Prior art keywords
wheel
map
pointer
plate
telescope
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
Ernst Von Bomsdorff
Original Assignee
Ernst Von Bomsdorff
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ernst Von Bomsdorff filed Critical Ernst Von Bomsdorff
Priority to GB190622767T priority Critical
Application granted granted Critical
Publication of GB190622767A publication Critical patent/GB190622767A/en
Expired legal-status Critical Current

Links

Abstract

22,767. Bomsdorff, E. von. Oct. 15. Bearings, indicating; telescopes.-In look-out instruments of the type in which a pointer travelling over a map follows the horizontal movements of a telescope or other sighting-device to indicate the line of sight on the map, the map-carrier is attached to the sighting-device beneath the eyepiece or its equivalent, so as to be carried round in an horizontal circle with the sighting-device, and the pointer is operated by a suitable train of toothed wheels. In the form shown in Fig. 1, the map table 16 is carried by a plate 7 which rotates with the support 3 of the telescope, being attached thereto by a clamp 9. A bevel-wheel 5 is clamped to the base-plate of the telescope and gears with a toothed wheel 40 mounted on the spindle 39, which is carried by the plate depending obliquely from the plate 7. The wheel 38, which rotates with the wheel 40, is geared to the wheel 35 by an intermediate wheel, arms 28, which support the pointer 24, being carried round by the wheel 35. When the telescope is turned, the plate 7 turns with it, and the wheel 40 runs over the bevel-wheel 5 and turns the pointer 24 through the same angle as the telescope. The map 15 and its transparent cover are clamped to the table 16 by a ring 21 and clips 21<1>, the table being detachably secured to the oblique plate by a thumb-screw 18. In order to be able to set the pointer 24 without turning the wheel 35, the ring 30, which carries the arms 28, is clamped to the sleeve 31, which carries the wheel 35, by means of a screw 32 operated by a milled head. To ensure the station-point on the map being exactly in the centre of the table, a needle 22 is passed through that point and pressed between a spring clip into an aperture in the thumb-screw 18. The pointer 24 is provided with a direction-indicator, such as an arrow-head, and with a scale and a sliding position index. The train of gear-wheels 34 or 40 may be replaced by a single wheel of the same diameter as the bevel-wheel.
GB190622767D 1906-10-15 1906-10-15 Improvements in Apparatus for Orientating or Determining the Direction or Relative Positions of Points upon a Map or Territory. Expired GB190622767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB190622767T 1906-10-15

Publications (1)

Publication Number Publication Date
GB190622767A true GB190622767A (en) 1907-07-18

Family

ID=32205153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190622767D Expired GB190622767A (en) 1906-10-15 1906-10-15 Improvements in Apparatus for Orientating or Determining the Direction or Relative Positions of Points upon a Map or Territory.

Country Status (1)

Country Link
GB (1) GB190622767A (en)

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