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     1920     PORTABLE  TYPEWRITERS     P I C T U R E   G A L L E R Y     
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CORONA 3
THE FOLDABLE & PORTABLE TYPEWRITER
L C SMITH & CORONA TYPEWRITERS, INC.
Groton, NewYork / USA (1926)

Back to the older version ...

SN = X 635033





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REMARKS:
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This Model is an interesting "MATHEMATICAL" Version (Custom made ? )
It has special symbols on the hammers ("+", "=", "π" & "square-2")
but the "standard" symbols on its keys ...

Modified TECHNICAL DATA of this newer Model:
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   o  Pica  10 cpi ;  80 cpl
   o  Shift keys added on the right side
   o  Carriage-return / line-feed handle on the left side
   o  Carriage extended one inch, now  9 3/4 "
      (Now fitting business envelopes)

The Trick with RIBBON SPOOLING:
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When operating right, both axles of the ribbon spools turn clockwise.
Both spools have to have the ribbon-ends wound up counter-clockwise.
THE RIBBON TURNS AROUND THE SPOOL WHICH HAS THE TOP-NUT FIXED - THE
OPPOSITE NUT HAS TO BE LOOSE - in order for the ribbon to move ...

RESTORATION Starts:
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Nothing was working.  Discovered after disassembling, that someone
with low skills and bad tools had tried to repair - OhOh!

  (1) Cleaning, bending, oiling, re/placing springs ...
  (2) End-lever of the space-bar lever-system was broken ...
 ----> Temporarily repaired by glueing a hook made of copper-wire!
  (3) Missing a special screw on the left side of the carriage 
      for holding a ratchet lever in place - enables the rubber-
      cylinder to go back to previous lines ...
 ----> Made "the right one" out of a longer screw!
  (4) 12 (too small) ball bearings supported the carrier ...
 ----> Found 8 right ones ( 3/16" ) to exchange!
  (5) To prevent clustering of the ball-bearings ...
 ----> Made a cage out of paper clips!

   
RESTORATION S T O P P E D , because MISSING PARTS ... ****************************************************** (6) 4th carriage-clamp (... necessary, because the carriage is shaky ...) (7) Left ribbon feed-lever with its screw & spring (... enables the ribbon to spool backward ...) ... and C O N T I N U E D : ============================ " T H A N K S ! " to the friendly people at (*) ... +-------------------------------------------+ | >> CALIFORNIA OFFICE MACHINES << | | ( Since 1949 ) | | 2362 San Pablo Avenue | | B E R K E L E Y , CA 94702 | | Phone (510) 845-3780 | +-------------------------------------------+ ... for giving me the missing parts ... ----> to restore its FULL FUNCTIONALITY and ... (8) the missing black bottom plate under the carriage gears and ... (9) a front plate with »CORONA« in exchange to my faded-out one ----> to restore its ORIGINAL BEAUTY ... Now stored in a new, perfect fitting WOODEN RED BOX *************************************************************************** Back to the older version ... Have a look at the SCM »GALAXY« - 60 years later ... (*) Post Script ... 2019 =========================================================================== This Typewriter Shop is in the center of the movie »CALIFORNIA TYPEWRITER« https://en.wikipedia.org/wiki/California_Typewriter ... impressum: *************************************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 09/08/07