General Report on Tunny
13D Page 27
13C COPYING MACHINES.
These machines are fed with tape, keyboard operation or electrically plugged patterns.
They produce either tape or printed letters.
It is convenient to describe them in tabular form.
| INPUT | OUTPUT | NAME OF MACHINE | REMARKS | ||||||
 | Keyboard | → | tape | Hand perforator | |||||
| Tape | → | tape |  | Angel | |||||
| Insert machine (or L.B.M.): | Special facilities for making correction by hand. | ||||||||
| Tape | → | | Junior : | Has comprehensive steckering | |||||
| Garbo : | A Junior with Δ'ing. | ||||||||
| Tape | → | tape | | Miles: | Can add five tapes with impulse permutation, etc. | |||
| Miles Δ: | Has also Δ'ing and is more flexible. | ||||||||
| Plugged pattern and tape or keyboard |  | | Tunny : | | The plugged patterns are arbitrary Tunny key. | ||||
| → |  | tape or print | Decoding machine : | These two machines differ principally in application. |
All these machines make use of certain standard units: the simpler ones consist of little else:
1. Tape Readers (or transmitters, or auto-transmitters).
2. Reperforators (or punches).
3. Electromatic Typewriters.
The varieties names in brackets differ technically, not functionally.
13D MISCELLANEOUS SIMPLE MACHINES.
These include:-
Slide-rules.
Adding machines.
Hand counters for measuring the length of tapes in terms of sprocket-holes.
"Stop and Start" for punching stop and start signs.
Stickers (h and o): a device used in joining tapes.
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