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Made from Polystyrene or Cellulose Acetate, then polished from
mould and free of flash, these handles fit lever keys No. xxx The Handle, Key No. 1 is the
standard handle for a single lever key
and is produced in two patterns. The handle screws onto a No.2 BA thread.
Knurled pattern
The knurled pattern which is turned from formalised Casein, or
in the case of black handles from Ebonite. While perfectly
satisfactory in the great majority of cases, the use of Casein
handles is not recommended in potentially damp situations such
as unheated U.A.X. buildings, as, very
rarely, a fungus growth may then develop.
Fluted pattern
The fluted pattern which is moulded in either a thermo-setting
material (a phenolic or urea formaldehyde) or a thermo-plastic
material, usually polystyrene. Drawing - 62978.
Standard colours are:-
| Colour |
B.S. 381C Tint Code |
| Black |
- |
| Blue |
169 |
| Grey |
631 |
| Red |
538 |
| Yellow |
355 |
| Green |
Bexoid Code No. 341 |
Drawing No. 62978
Supplied by:-
Ericsson
Siemens Brothers
A.T & E
STC
Knurled pattern
Fluted pattern
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