Dürkopp Adler 1767 Operating Instructions Manual page 110

Technical data
Characteristics
The machines are equipped with an extra large (XXL) vertical
hook.
The remaining thread length following the thread cutting process
is, respectively, approx. 15 mm and approx. 5 mm without and
with the short thread cutter.
A safety snap-on coupling prevents any misadjustment or damage
to the hook in the event of a thread jamming.
Automatic lubrication system for lubricating the machine and the
hook.
All subclasses are equipped with a bar holding 6 push buttons.
An additional button panel has been placed within easy reach of
the sewer and allows the sewer to assign the same 6 functions of
the buttons housed in the button bar.
108 Operating Instructions 1767 - 00.0 - 12/2016