Function Contact Spring - Teletype 28 Manual

SECTION 573-115-700TC
2. 66 Function Mechanism (Cont.)
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1
WIRE SPRING TYPE LUG
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~~
STANDARD LUG
(RIGHT SIDE VIEW)
FUNCTION LEVER
(UN OPERA TED)
NOTE: FOR EARLIER DESIGN SEE PAR. 4.21 AND 4.22
FRONT
(REAR VIEW)
Page 68
REAR
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FUNCTION CONTACT SPRING
REQUIREMENT
I
CONTACT CLOSED
MIN. 1 OZ.
MAX. 2 OZS.
TO OPEN SWITCH CONTACT
FUNCTION LEVER (OPERATED)
(RIGHT SIDE VIEW)
NOTE: IF THE SWITCHES ARE REMOVED FROM THE STUNT BOX, THE FOLLOW-
ING REQUIREMENTS APPLY:
(1) PROVIDE AT LEAST 0.006 INCH CLEARANCE BETWEEN THE CONTACT ARM
AND THE VERTICAL PORTION OF THE CONTACT CLIP. IF THE SWITCH HAS
CONTACTS FRONT AND REAR, THIS CLEARANCE APPLIES TO BOTH FRONT
AND REAR. TO OBTAIN THIS CLEARANCE, POSITION THE CONTACT
PLATE BEFORE TIGHTENING THE CONTACT PLATE SCREWS. THE CONTACT
MUST BE MADE BEFORE THE FUNCTION LEVER TOUCHES THE TOP PLATE.
ON SWITCHES WITH CONTACTS FRONT AND REAR, CHECK TO SEE THAT
THERE IS A GAP OF 0.008 TO 0.028 INCH BETWEEN THE FORMED-
OYER END OF THE FRONT CONTACT CLIP AND THE BOTTOM OF THE CON-
TACT ARM WHEN THE REAR CONTACT IS CLOSFn