PERPETUUM EBNER PE 2020 - Page 5

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3

Item

No.

Description

1

Cast

metal

turntable

platter

2

Turntable

matting,

outside

ring

3

Turntable

matting,

center

ring

5

Single-play

spindle

6

Speed

selector

knob

8

Knurled

knob

9

Pick-up

arm

counterweight

10

Pick-up

head

with

pick-up

arm

tube

21

Pick-up

arm

tracking

weight

adjustment

knob

29

Pick-up

arm

lock

32

Control

lever

34

Feeler

pin,

long

46

Slide

carrier

assembly

56

Antiskating

precision

control

knob

153

Sensing

pin

D

Stylus

pressure

zero

adjustment

E

Landing

point

F

Vertical

tracking

angle

Record

dropping

The

control

cam

(128)

operates

the

drop

lever

(108)

for

the

control

of

the

automatic

record

spindle

(4).

As

the

push

rod

extension

(96)

is

pulled

down,

the

supporting

levers

are

retracted

to

release

the

record

which

is

thus dropped

on

the

rotating

turn

table.

Record

size

discrimination

The

upper

locating

lever

(42)

as

controlled

by

the

control

cam

(128)

is

moved

inside

the

operating

range

of

a

feeler

pin

(34)

rotating

with

the

turntable.

Depending

on

the

size

of

the

record,

the

feeler

pin

(34)

is

pressed

down

to

a

greater

or

smaller

extent.

The

level

of

that

pin

controls

the

different

distance

by

which

the locating

lever

(42)

is

restored

for

the

inward

movement

of

the

pick-up

arm

(10)

to

its

position

above

a

7”

or

10”

record.

In

the

presence

of

a

12”

record,

the

upward

movement

of

the

sens

ing

lever

(154)

as

released

by

the

control

cam

(128)

is

limited.

The

upper

locating

lever

(42)

is

locked

during

its

return

movement

and

thus

reduces

the

inward

movement

of

the

pick-up

arm

(10)

to

the

starting

grooves

of

the

12

record

Tripping

As

the

pick-up

arm

(10)

moves

towards

the

center

of

the

record,

the

trip

link

(186)

supported

on

the

pick-up

arm

locator

segment

(184)

impells

the

reject

lever

towards

the

turntable

cam.

After

the

stylus

has

reached

a

record

diameter

of

about

423/32”

(120

mm),

the

reject

lever

touches

the

rotat

ing

cam

for

the

first

time

and

is

repelled

by

the

latter

until

the

lead-out

groove

with

its

higher

pitch

causes

the

reject

lever

to

be

engaged

by

the

cam

of

the

turntable

(1),

thus

starting

the

control

cam

9

0

21

153

E

10

29

F

46

32

(128),