1920's/30's Goltz and Breutmann Mentor Klapp Reflex Camera - Shutter issues

Goltz and Breutmann Mentor Klapp Reflex Camera with a Carl Zeiss, JenaTessar f/4.5 15 cm. Lens.
This camera may or may not? have shutter timer problems - any help appreciated as it's hard to find any useful information out there!
In the year 1898 Hugo Breutman founded his camera factory in Berlin. Franz Goltz joined the company in 1899.
The company mainly manufactured single lens reflex cameras, equipped with the fast focal plane shutter, more than any other camera manufacturer in the world, except the Graflex Company.
The Mentor Klapp Reflex is a box-form single lens reflex camera made by Goltz & Breutmann. The camera has a focal plane shutter,[3] with speeds (in some models) up to 1/1300 second. the shutter speed is adjusted by setting a slit-width and spring tension (with the aid of a table fastened to the camera); after this, the exposure times themselves are marked on the dial.
In the year 1921 the name was changed in “Mentor Kamera Fabrik - Goltz & Breutman”
This particular camera is in great condition, but alas I cannot fathom the shutter adjustment.
"M"=Moment Shutter time.
"Z"=Zeit (German) = Time = push the release knob to open shutter. To close the shutter again, press shutter release knob once again.
Mentor Goltz & Breutmann: Mentor Reflex (1913, Klapp, Folding) c1913-1925. 6x9, 6.5x9, 9x9, 9x12, 10x12.5, 10x15, 12x16.5, or 13x18cm plates, reflex-type, extendable camera.
Links:
camera-wiki.org...
collections.va...
#goltz&breutmann #mentor-antique #antique-camera #mentor-klapp-reflex

[@gustavog2719]

Gracias Jonathan!!! Con tu video pude arreglar mi cámara Mentor Klapp que compré ayer a 60 U$S . Te agradezco desde Argentina.

[@JonathanCampDesigner]

No hay problema. Espero que disfrutes usando el software.

[@christopherpinckney-e2r]

Some thoughts on Mentor Klapp Reflex.
I believe shutter has been replaced and simplified. The clue is in the scale on back of camera and innermost parallel roller. I believe it should have two blinds. One blind is moved to vary the width of opening. My camera has T instead of Z on shutter winder. Shutter is completely missing but has remains of curtain tape on innermost brass roller. Parallel rollers are coupled. To uncouple rollers to vary width of opening advance shutter winder while lifting knurled ring around shutter knob. At some point while rotating, the knurled ring will lift and uncouple rollers. Knurled ring has stops at each end of travel. Innermost roller is rotated by knurled ring. The numbers on shutter knob equate to width of opening. Viewing through rear ground glass is done at
maximum opening of shutter as per large format practice. Lens panel and lens board behind are removable. I do not believe they were used with other lenses (non aperture lenses as in brass lenses) but can be because of shutter. Possible manufacturing dates 1910 to 1930. Could be bought with rectangular leather case which held camera horizontally closed and three double darkslide sheet film holders numbered 1 to 6. Photos of case and film holders are available online. earlyphotography.co.uk has explanation and diagrams of various two blind shutters. My example came with two film holders and some negatives which suggest last used early to mid 1930's. Single roller with numbers is for shutter tensioning. Higher number equates to higher shutter speed.

[@JonathanCampDesigner]

Wow, thanks for your very comprehensive reply👍

[@justlikeswimming5988]

What a cool old camera, thanks for sharing! One just came up on one of the Esale sites, but without any backs. Would love to work with one! Please let us know how this repair continues...

[@JonathanCampDesigner]

Thanks, will do. Yeah the camera is wonderful in it’s design 👍