US3925897A - Stereo-plotting apparatus for air and earth photogrammetry - Google Patents

Stereo-plotting apparatus for air and earth photogrammetry Download PDF

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Publication number
US3925897A
US3925897A US358808A US35880873A US3925897A US 3925897 A US3925897 A US 3925897A US 358808 A US358808 A US 358808A US 35880873 A US35880873 A US 35880873A US 3925897 A US3925897 A US 3925897A
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US
United States
Prior art keywords
pin
rod
carriage
joint
concave surface
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 - Lifetime
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US358808A
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English (en)
Inventor
Walter Ferri
Giulio Grassotti
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Officine Galileo SpA
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Galileo Spa Off
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Publication date
Application filed by Galileo Spa Off filed Critical Galileo Spa Off
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying

Definitions

  • I ABSTRACT Stereo, photogrammetric, plotting apparatus comprises a pair of projecting rods supported by universal joints. Each rod is associated with a plate-carrier carriage and is linked to the carriage by a joint in the form of a pin movable along a concave surface of the rod. Bot'n rods are linked to a third carriage by a joint movable along the concave surfaces ot the two rods.
  • stereo-plotting apparatus for mechanical photogrammetric projection, projection rods each having a concave surface, a plate-carrier carriage associated with each said rod, a respective pin slidable with respect to the concave surface of each rod, the said pin having an end portion which fonns a joint linking the rod with its associated carriage, a third carriage, and joint means linking the third carriage to the rods, the joint means being slidable with respect to the said concave surfaces of the rods.
  • stereo photogrammatic plotting apparatus a pair of projection rods, a carriage associated with each rod, a respective joint linking each carriage with its associated rod, each said joint comprising pin means movable longitudinally along the rod, a third carriage, and joint means linking the third carriage to the rods, the joint means being movable along the rods on the same axis as said pin means.
  • the joint between each carriage bearing one of the two photographic plates to be rojected and the associated rod which moves the carriage is located between the universal joint which forms the centre of projection, and the joint which connects the rods to each other and to the third carriage of the coordinatometer.
  • This latter joint can be made in two parts connecting the rods to the third carriage of the coordinatometer, when there is used for the projection cameras, the so-called Zeiss parallelogram arrangement.
  • FIG. 1 is a schematic fragmentary perspective view of stereo-plotting apparatus in accordance with the pres- Pat'. Specification Nos.
  • FIG. 2 is a fragmentary side elevation, partially in section, of a modified form of the apparatus shown in FIG. 1;
  • FIG. 3 is a fragmentary side elevation, partially in sectiomof a modified form of the apparatus
  • the apparatus shown in FIG. 1 comprises a joint 1 5 which links projecting rod's'2 and 2' to a third carriage 3 of a coordinatometer which moves in' the X, Y and Z directions whereby'to move the rods 2 and 2 which are supported universal joints 4 and 4.
  • the joint 1 included suitable conventional means (not shown) to hold the rods against the ball of joint 1.
  • the joints 4 and 4' include respective brackets 40 and 40' adopted to be secured to the frame (not shown).
  • the rods 2 and 2' act to move plate-carrier carriages 5 and 5 via joints 6 and 6' connected to pins 7 and 7.
  • the plate-carrier carriages 5 and 5' are externally supported from the frame for slidable movement in their own planes as is entirely conventional.
  • the rods 2 and 2 are of semi-circular cross-section, and each of the pins 7 and 7' is slidable with respect to the concave inner surface of its associated rod 2, 2.
  • the pin is shown at 7a and and is guided by two guides 8a and 9a.
  • FIG. 1 shows pin 7 guided by guide 8 and sleeve 10 said sleeve being secured to the associated rod 2 and supporting the associated universal joint by means of hinge 41.
  • the guide 8a is formed with a pair of rollers 8A arranged adjacent the joint 6 and the guide 9a comprises a pair of rollers 9A adjustable by means of an eccentric.
  • the pin 74 is retained by a pair of rollers 11, slidable along a longitudinal groove 2A on the outer surface of the rod 2, the rollers 11 being linked to the pin 7a by means of a resiliently biased arm 12.
  • the apparatus particularly described is of relatively simple construction and has improved operational accuracy of the projecting rods, particularly when the portion thereof between the universal joint and the photographic plate to be projected, is moved in the space known as the image space.
  • Apparatus as claimed in claim 1 further comprising cylindrical guide means mounted on each pin for guiding said pin along the associated concave surface.
  • Apparatus as claimed in claim 1 further comprising parallelogram linkage means at an end portion of each rod, and weight means carried by the linkage means for maintaining the rod in selected orientations.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Printing Methods (AREA)
US358808A 1972-05-16 1973-05-09 Stereo-plotting apparatus for air and earth photogrammetry Expired - Lifetime US3925897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT9483/72A IT959437B (it) 1972-05-16 1972-05-16 Stereorestitutore fotogrammetrico con spinotto di guida sulla superfi cie interna della bacchetta di pro iezione

Publications (1)

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US3925897A true US3925897A (en) 1975-12-16

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US358808A Expired - Lifetime US3925897A (en) 1972-05-16 1973-05-09 Stereo-plotting apparatus for air and earth photogrammetry

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US (1) US3925897A (en])
CH (1) CH573101A5 (en])
GB (1) GB1432414A (en])
IT (1) IT959437B (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175328A (en) * 1976-07-12 1979-11-27 Helmut Kellner Arrangement for producing photographic pictures suitable for photogrammetric survey of spatial objects

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574123A (en) * 1948-08-28 1951-11-06 Santoni Ermenegildo Projection photogrammetric plotting apparatus
US2753756A (en) * 1952-08-25 1956-07-10 Santoni Ermenegildo Photogrammetric plotting apparatus
US2847906A (en) * 1955-01-13 1958-08-19 Santoni Ermenegildo Photogrammetric plotting apparatus
US3302291A (en) * 1967-02-07 Czapek photogrammetric plotter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302291A (en) * 1967-02-07 Czapek photogrammetric plotter
US2574123A (en) * 1948-08-28 1951-11-06 Santoni Ermenegildo Projection photogrammetric plotting apparatus
US2753756A (en) * 1952-08-25 1956-07-10 Santoni Ermenegildo Photogrammetric plotting apparatus
US2847906A (en) * 1955-01-13 1958-08-19 Santoni Ermenegildo Photogrammetric plotting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175328A (en) * 1976-07-12 1979-11-27 Helmut Kellner Arrangement for producing photographic pictures suitable for photogrammetric survey of spatial objects

Also Published As

Publication number Publication date
IT959437B (it) 1973-11-10
CH573101A5 (en]) 1976-02-27
DE2323411B2 (de) 1977-04-21
DE2323411A1 (de) 1973-11-29
GB1432414A (en) 1976-04-14

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