mysterysolved

35 photos tagged mysterysolved, from 1 member of Flickr Commons.

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1911
2011

 

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Identified! [Device that impresses the Great Seal of the United States on certain official documents] (LOC)

from The Library of Congress

  • 9 older comments, and then…
  • Pixel Wrangler said:
    This is The Great Seal of the United States.
    Shown are the die, the counter-die, and the press.
    The device is kept at the State Department.

    "These stand in the Exhibit Hall of the Department, [and are now] inside a glass enclosure which is kept locked at all times, even during the sealing of a document. The mahogany cabinet’s doors also are kept locked, and the press is bolted and padlocked in position except when in use." [1]

    More information, including photographs, about the history of the seal dating back to July 4, 1776, can be read at the State Department's Bureau of Public Affairs.
    [The Great Seal of the United States] The Great Seal in use today
  • bawdy kittens said:
    Pixel Wrangler Good answer Pixel. I thought it was some kind of hot air regulator.
  • Art Siegel said:
    another photo commons.wikimedia.org/wiki/File:Great_Seal_press_with_All...
  • Jon (LOC P&P) said:
    Thanks Pixel Wrangler for figuring out what this is. We'll update the catalog record. They may keep it locked up today but back then apparently it was not so secure.
  • stayawake68 said:
    To stamp a document.

Identified! [9-lens aerial mapping camera made by the Fairchild Aerial Camera Corp. for the U.S. Coast & Geodetic Survey. It was built under the direction of Capt. O.S. Reading in 1935] (LOC)

from The Library of Congress

  • 8 older comments, and then…
  • Chris Walter said:
    Looks like it meant to take a 360-degree photograph.... actually 8 photographs of 8 mirrors.
  • Tim Evanson said:
    The lenses are 6-inch wide angle "Xpres" lenses made by Ross (based in London, UK).
  • Kilted Cowboy said:
    this was actually the first iteration of Daleks for the 1914 stage play "Dr Who"
  • Art Siegel said:
    related to www.loc.gov/pictures/item/hec2013011206/resource/ I think this is the same camera, seen from the other side.
  • swanq said:
    The most similar thing I have found is in www.isprs.org/proceedings/XXXIV/5-W16/papers/PanoWS_Dresd... See fig 20 for an aerial panorama camera.

Identified! [Charles Greeley Abbot, astrophysicist and Secretary of the Smithsonian, with his device: a silver-disc pyrheliometer which measures direct beam solar irradiance] (LOC)

from The Library of Congress

  • 6 older comments, and then…
  • Ross said:
    Specialized camera for photographing the sun's disk? There's a tilted yoke with some mechanism attached, like a polar-axis drive for astronomy of some kind. But the small aperture only makes sense with something as bright as the sun.
  • oldoinyo said:
    Either that or a directional antenna of some sort.
  • Northern Pike said:
    Optical device with camera judging from the filter up front
  • Ross said:
    Oh I'm changing my mind: I don't think the tube is long enough for telescope optics. Maybe it's a solar bolometer and the long rod at the top is a thermometer inside a protective metal sheath.
  • Ross said:
    Also see the related photo.