IMPROVEMENTS IN WRINGING MACHINES
Year: 1885

page_text: I OTTO RUDOLF NITSCH of N° 106 Bergmann Strasse in the City of Berlin,
Prussia, Germany, Manufacturer, do hereby declare the nature of my Invention for
"IMPROVEMENTS IN WRINGING MACHINES" and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement
My invention relates to improvements in wringing machines with pressure
releasing device for the spring bow and india rubber roller or rollers the object
of which is to produce a device by means of which it is rendered possible to place
the spring for pressing the rollers on each other out of action, thus freeing the
india rubber roller from pressure whereby the power of the spring is maintained
and the caoutchouc roller prevented froin becoming unround.
The operation of placing the spring bow under tension and pressing the india
rubber rollers onto each other is effected by the action of an excentric on the one
arm of the spring bow whilst the releasing of the spring and removal of the
pressure of the india rubber roller is attained by bringing the excentric into the
opposite position to that previously described.
Figure 1 represents the position of the excentric when the machine is put out of
operation.
Figure 2 represents the spring bow placed under tension and the rollers pressed
onto each other.
Figure 3 is a section through the excentric, the rollers in elevation.
•
The two india rubber rollers a a¹ are so arranged in the spring bow b that the shaft
of the lower roller to the protruding end of which the driving crank c is fixed runs
freely in a bend or curvature of the said spring bow b whilst the upper roller a¹
rests in the appropriately formed upper arm of the spring bow bby means of
the shaft or axle a which carries the excentric d.
When the excentric is in the position represented in Figure 1 the spring bow is
not under tension so that the two rollers a a¹ are in light contact with each other
when the machine is not in use and in this manner the deformation of the rollers is
prevented.
If however the excentric is moved into the opposite position by means of the
lever e which is connected with the same as shown in Figure 2 the spring bow or
strap will be put under tension and the rollers pressed onto each other as is
requisite when the machine is to be put in operation,

page_text: When on the other hand the lever e is brought into its original position as
shown in Figure 1 the spring bow is placed out of tension and the india rubber
rollers remain in contact with each other but without pressure.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
A wringing machine with spring bow b in which the shaft or axle of the india
rubber roller a has its bearing direct in the one arm of the said spring bow b
whereas the shaft or axle of the other roller a¹ has its bearing in an excentric d
which has its bearing in the spring bow b so that according to the position of the
said excentric d the spring bow is released from (Fig. 1) or put under tension
(Fig. 2) whereby the advantage is attained that the spring bow b can be placed out
of tension and the india rubber rollers freed from pressure substantially as set forth.
in the foregoing specification and shown in the accompanying drawings.
Witnesses,
OSKAR LUTZMANN.
FRIEDRICH STAHLBERG.
1000
OTTO RUDOLF NITSCH.