Boxoffice-October.01.1955

stamped erivelovf is sent with your request.
(Bulletins on the Intermittent onlyi.
How to Remove and Replace the Intermittent
Sprocket Pad Assembly— Loosen
the set screw holding the complete nssembly.
The assembly can now be pulled out.
Next, rotate the assembly when removlnp
to clear the sprocket teeth. To replace
this assembly on the movement, push the
arm iFig. 3, No. 8i into its holdinR hole
making sure that the pads are In the open
position, of course. Now. you rotate the
assembly until the detent in the pad stud
bushing is in line with the assembly holding
screw. In this position tighten the holding
screw iFMg. 3, No. 7' securely. Following
this procedure will assure proper pressure
of the pad against the intermittent
sprocket.
REMOVING APERTURE PLATE
now remove the two screws in the lower
bearing bracket (Fig. 2. No. 17'. Next Uikc
out the two screws In the Intermittent
drive gear bracket iFig. 2, No. I8i. Dl.sengage
this bracket from its holder. Please
note that the upper and lower bearing
brackets are located In position by
dowel pins. Holding the vertical shaft unit
with both hands, disengage the bearing
bracket from dowel pins and remove
the complete a.ssembly.
The vertical shaft unit can be easily disassembled
by removing the collar nut on
top of the vertical shaft by loosening the
two set screws and unscrewing the nut
from the shaft. Carefully remove the bottom
steel gear from shaft by taking out the
retaining screw. All parts on the shaft
can now be removed very quickly and
easily. He .sure, when i- :...->,... ..
.^-^^
shaft, you replace all i„.ii
proper posllloiw Steel w.. .iwuy.
placed uKBlnst the face of iJu bitll Uarlnu.'i
The lUu.stratlon of the Rear Hide of the
mechanl.sm shows how all thi- \>t\rV. -.houUI
be o.s.sembled In the projector Unii , runnot
be positioned wrong &x they mast fit
Into dowel pins.
When you have re-a.s.sembled the vcrllcul
shaft parts, be sure each part l.s placed back
correctly and then tighten the oollar nut
.set
.screws .securely.
Here Is the correct procedure on removlnB
and replacing the pad roller arm teaslon
springs and balls: Drive out the Uiper pin
from the arm stud bushing nnd take off
Continued on following pogt
How to Remove the Aperture Plate
Pull out the aperture retaining plate iPig.
1. No. 14 » which is behind the aperture
plate. This frees the aperture so that it
can be moved a little toward the rear,
allowing it to be pulled directly out of its
holder. The aperture plate is held firmly
in position by its specially designed shape.
The aperture should be taken out every
day and cleaned so there will be no dirt
around its edges, or other accumulation.
Replacing the Film Gate Pad—First, remove
the film gate unit from the mechanism
by loosening the holding screw iFig. 1,
No. 21. The pad is removed by taking out
the four holding screws. Carefully install
the new film pad with marking 'TOP"
corresponding with the "TOP" of the film
gate plate. Next, press the film gate pad
against the two film gate spring retaining
plates and gate plate. Fasten the pad in
position with its holding screws, making
sure that everything fits correctly in place
as outlined here. It is a very good idea to
3heck the complete gate assembly to make
sure that the pad is operating in its "in"
and "out" movement against the springs
oefore re-installing the film gate assembly
n the mechanism. Be sure t6 tighten the
holding screw.
Lens Showmansliip
REMOVING THE SPROCKETS
How to Remove Upper or Lower Sprockets
—A careful check should be made of the
prockets periodically and when they show
iny under-cutting, replace with new. To
emove. simply open the pad roller arm.
Take out screw 'Fig. 1, No. 13* at center
f sprocket and pull sprocket off shaft.
'o install new sprocket, hold the drive gear
irmly against its bearing and then
ilace the sprocket on the shaft tightly
gainst its bearing. By following this
Tocedure you will eliminate any end
'lay. Always fasten screw securely so
procket will not slip on shaft. Use a stiffrlstle
tooth brush, moisten with solvent,
nd clean sprocket teeth every day before
tarting show.
Removing the Vertical Shaft Assembly
"om the Mechanism—First, remove the
lutter shaft assembly and intermittent
lovement. Take out the two screws in the
pper bearing bracket (Fig 2, No. 16 1 . You
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JXOFTICE October 1. 1955 29