IBM Selectric I/O Manual Of Instruction page 13

Tilt Ring Spacer
Ti It Sector Gears
Tilt Sector Tube
Tilt Pulley
FIGURE 15. Tilt Mechanism (Early) - Rocker Portion
is restored by its spring causing the type head to return to the
rest position. From the pulley, the ti It tape is guided through
the hollow left end of the rocker shaft by a rounded tape guide
b lock attached to the bottom of the rocker. The ti It tape ex-
tends to the left around a sma II pu "ey, back to the right a-
round a simi lar pulley, and is attached to the right side of
the carrier. This arrangement allows left to right movement
of the carrier without disturbing the position of the typehead
(Fig. 16).
The pulley on the right is solidly mounted and is moved for
adjustment on Iy. The left pu Iley is attached to a pivoting
arm ca lied the ti It arm. Movem ent of the arm to the left ex-
erts a pu II on the ti It tape to cause a rotation of the ti
It
tube
and a ti It to the typehead.
left Hand Tilt Pulley
,
Tilt-2 latch
Tilt-1 latch
.:~::: ....
late Style (Gearless Ti It)
The "gearless tilt m~chanism" operates basically the same as
the previous mechanism. Movement of the ti It ring is ac-
complished by the operation of the ti
It
pulley (Fig. 17). A
pu II on the tape causes the ti It pu lIey to rotate (about its
mounting stud) transferring motion to the ti
It
ring by means of
the tilt pulley link. When the pull on the tape is relaxed the
tilt pulley is restored to rest by its extension spring.
FIGURE
17.
Gearless Tilt (late)
The ti It pu IIey link is fastened to the ti It pu Iley by a ba II
shouldered rivet to allow the link to pivot in all directions.
The other end of the link is fastened to the tilt ring by a pin
and C-clip.
FIGURE 16. Tilt Tape System
6