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Mackenstein Jumelle
France Version française
Photos by JFL text by JFL. From the collection of JFL. Last update 2015-12-10 par Sylvain Halgand.

Manufactured or assembled in France from (Circa) 1900 to 0.
Index of rarity in France: Rare (among non-specialized garage sales)
Inventory number: 15447

See the complete technical specifications
Chronology of cameras Mackenstein 
History of the brand Mackenstein New window

This jumelle camera No 629 bears all the identifications of the brand and its magazine receives 9 x 12 cm plates.
The lens CP Goerz No. 47666 allows to estimate the date of manufacture towards 1900-1901.

What differentiates it from the  "jumelles réduitesdescribed elsewhere, is the speed pneumatically adjusted of the shutter:

  • Arming is done by retracting the rod of a single acting piston cylinder, attached to the guillotine  shutter.
  • When triggered, the cylinder is released from pressing the top left button. The hole below the button allows to connect a cable release.
  • The air admission into the cylinder chamber is controlled by a small hole in a hub disposed at the end of the cylinder. It comprises five different diameter holes and a position P without hole.
     

The knurled knob on the side allows to move the front and therefore to adjust the distance. The distance is indicated on a graduated scale located in front of the viewfinder.

Mackenstein Jumelle