OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER

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POINTER'SSTATION
12. The pointer's station is shown on drawings number
231153, 231155~ 231156, 231158 and 231159 for the right hand
station and drawings number 231167, 231169, 231170, 231172
and 232423 for the left hand station. Components of the pointer's
station are the following parts and subassemblies, telescope
holder, elevation bracket, deflection pinionancfsector, sight
deflection worm and worm wheel, sight elevation worm and worm
arc, pointer's station differential, handwheel and order shaft
gearing, pointer!s station syllchronizing clutch, dials, and
gearing, handwheeL bracket, synchronizing dial housing, pointer's
sta tion housing cap, pointer Is station housing ,_ and pointer's
sta tion housing s'uppor t ,; These parts and assemblies are described
in the paragraphs that follow.
13. The te l e s c op e ho lder ae s emo ly holds the telescope
and provides vertical trunnions for deflection movementof the
telescope. One face Of this phosphor bronze casting mounts a
sector gear which acts with a pinion to cause telescope holder
d,eflection. The trunnions of the telescope holder have
t,rurmion bearings in the eleva tiori bracket.
14. The elevation bracket supports the telescope holder
and with its' hollow horizontal, axis shaft element, ball
bearing fitted, suppli-es elevation movement to the telescope
hblder. The hollo~ shaft section of the bracket encloses and
supports the deflection pinion shaft and is the axis shaft of
the elevation worm arc with provision for Clamping and adjusting
this part. '
15. The def lee t t on gear see t or and p i n LOn constitute
the mechanism directly connected to the telescope holder that
functions to deflect the telescope. It consists of a 24 tooth
pinion and a sector of a 240 tooth bevel gear. The pinion is
connected to a shaft from the deflection wormwheel and the
phosphor bronze sector is bolted to the telescope holder.
16. The sight deflection worm and worm wheel operate
to set the deflection angle of the telescope holder. The worm
is connected to a shaft from the trainer's station sight deflection
worm and the wormwheel is connected to the telescope
deflection pinion shaft. The worm is a left hand quadruple
thread steel worm and shaft and is matched with the worm wheel
of bearing bronze.
17. The sight elevation worm and worm arc set the elevat
Lon bracket in elevation. The worm arc, made of bearing
bronze, is connected to the elevation bracket and the worm, a
quad.r-upLe thread worm and shaft of carbon steel, is connected
to the shaft from the sight angle bevel gears. The sight angle