Singer 457 - Page 7

23 . Plug - Before plugging in the
machine, be sure that the volt-
age and number of
cycles
stamped on the
plate under the
hand wheel
are within the range
marked on the electric meter
installed byyour power com-
pany . To connect the machine,
push the machine terminalplug

23 Machine Terminal Plug
into the receptacle at the right

^
~- f
end of the machine . Then in-

` '
t
sert the wall plug into an elec-
trical outlet .
24 . Electrical Speed Controller -
Controls speed of the machine ;
the harder you press, the faster
it will sew .

24 Electrical Speed Controller
25 . Transparent Bobbin - Shows
thread supply ; is easily re-
moved for bobbin winding .
26 . Bobbin-Thread Tension Screw -
Seldom needs adjustment .
A
very slight turn
produces a
noticeable change
in tension .
25 Transparent Bobbin
5
26 Bobbin-Thread
Tension Screw
27
.
Stop-Motion Screw - Directs
power to the needle . Loosen the
screw for bobbin winding .
27 Stop-Motion Screw