FR761256A - Winding-unwinding device of an endless belt wound, except for a loop, in superimposed layers forming a spiral - Google Patents

Winding-unwinding device of an endless belt wound, except for a loop, in superimposed layers forming a spiral

Info

Publication number
FR761256A
FR761256A FR761256DA FR761256A FR 761256 A FR761256 A FR 761256A FR 761256D A FR761256D A FR 761256DA FR 761256 A FR761256 A FR 761256A
Authority
FR
France
Prior art keywords
spiral
winding
loop
except
endless belt
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
Application number
Other languages
French (fr)
Inventor
Hugo Heinis
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR761256A publication Critical patent/FR761256A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR761256D 1932-08-18 1933-08-12 Winding-unwinding device of an endless belt wound, except for a loop, in superimposed layers forming a spiral Expired FR761256A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH761256X 1932-08-18

Publications (1)

Publication Number Publication Date
FR761256A true FR761256A (en) 1934-03-15

Family

ID=4534703

Family Applications (1)

Application Number Title Priority Date Filing Date
FR761256D Expired FR761256A (en) 1932-08-18 1933-08-12 Winding-unwinding device of an endless belt wound, except for a loop, in superimposed layers forming a spiral

Country Status (1)

Country Link
FR (1) FR761256A (en)

Similar Documents

Publication Publication Date Title
FR779716A (en) Improvements in the production of diazotype photographic prints
FR761256A (en) Winding-unwinding device of an endless belt wound, except for a loop, in superimposed layers forming a spiral
FR768017A (en) Unwavering wave device
FR809845A (en) Belt shells
FR709422A (en) Device for joining the edges of a wound
ES131601A1 (en) Device for winding and unwinding an endless belt wound, except for a loop, in superimposed layers forming a spiral.
FR749804A (en) Device for unwinding and winding a continuous strip
FR746153A (en) Photographic film on reel
FR790605A (en) Device facilitating the fixing of a film on a winding reel
FR842832A (en) Mode and device for winding endless non-twisted film strips
FR748807A (en) Improvements in the manufacture of hydrocarbons
FR764232A (en) Endless belt guiding device
FR799849A (en) Device for automatically tensioning a belt
FR619870A (en) Device for winding and unwinding endless cinematographic films
FR536474A (en) Device for winding and unwinding endless cinematographic film
FR771582A (en) Device for endlessly unwinding a film on a cinema device
FR587008A (en) Capacitors with feed conductors forming loops
AT158027B (en) Sound recording camera with a flywheel carried by the film and a spring-loaded film tension roller.
AT144719B (en) Device for adjusting the film loops in cinematographic devices.
FR753716A (en) Device of a photographic paper rack
ES130698A1 (en) Perfections in the stretching mechanisms with endless belts.
FR797073A (en) Device for cutting photographic papers and films, etc.
FR683796A (en) Device for winding and unwinding endless belts with perforations
FR773734A (en) Sophisticated device allowing simultaneous creation of several duplicates of the same hand-drawn original
ES127094A1 (en) A device for the formation and winding of fins in the tubes.