GB252159A - Improvements in range finders - Google Patents
Improvements in range findersInfo
- Publication number
- GB252159A GB252159A GB12095/26A GB1209526A GB252159A GB 252159 A GB252159 A GB 252159A GB 12095/26 A GB12095/26 A GB 12095/26A GB 1209526 A GB1209526 A GB 1209526A GB 252159 A GB252159 A GB 252159A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cams
- disc
- range
- rangefinder
- shaft
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/10—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument
- G01C3/20—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument with adaptation to the measurement of the height of an object
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Distances Traversed On The Ground (AREA)
- Road Repair (AREA)
Abstract
252,159. Goerz Optische Anstalt Akt.-Ges., C. P. May 12, 1925, [Convention date]. Range-finders for use with aerial targets for determining the vertical and horizontal projections of the distances of the target from the observer are provided with two scales operated by logarithmic cams, the scales being moved one over the other in a manner similar to that of logarithmic slide rules. One of the cams is positively connected with the range prism adjusting means and the other with the device for adjusting the rangefinder in altitude. The rangefinder casing 1 carries the roller 2 by which the range is determined by operating the prisms 9, 10, through bevel wheels 4<a>, 5, 6, 8, the range being read on the drum 4. The scale 20<a> is rotated proportionally to the logarithm of the range indicated on the drum 4 by means of logarithmic cams 19, 20 actuated from the shaft 7 carrying the pinion 8 by toothed wheels 11, 12, the latter carrying a pin 13 acting on the end of a spring 14, the other end being attached to a spindle 15 rotating the cam 19. Cams 19, 20 are connected bv steel bands wound round their surfaces in opposite directions. The height of the target is read by means of a pointer or a disc 21 carrying a mark. A radially guided slide 22 on the disc forced outward by a spring 23 engages by fine teeth with the inner edge of the scale disc 20<a>, and may be disengaged by the rotation of the knob 25, having an eccentric groove engaging a pin 22<a> on the slide 22. The disc 21 is secured to the shaft 26, which is rotated by logarithmic cams 27, 28 from the bevel wheels 33, 32 when the rangefinder is elevated by rotating it in the bearing 34, in a similar manner to that by which the scale 20<a> is operated, so that rotation of the shaft 26 is proportioned to the logarithms of the sines of the angles of altitude. Additional cams and an additional disc on the shaft 26 actuated bv rotation of the rangefinder in the bearing 34 may be provided to give the horizontal projection of the target position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT252159X | 1925-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB252159A true GB252159A (en) | 1926-08-12 |
Family
ID=3670155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12095/26A Expired GB252159A (en) | 1925-05-12 | 1926-05-10 | Improvements in range finders |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB252159A (en) |
-
1926
- 1926-05-10 GB GB12095/26A patent/GB252159A/en not_active Expired
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