Dandy-roll for Paper Making Machines.
Year: 1897

page_text: Date of Application, 10th June, 1897-Accepted, 28th May, 1898
COMPLETE SPECIFICATION.
Dandy-roll for Paper Making Machines.
I, PHILIPP ACGUST MOSER, of Biberach, in the Kingdom of Würtemberg, in
the German Empire, Wire Gauze Manufacturer, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
The present invention relates to a dandy-roll, the revolving sieve of which is
cleaned from within with water, steam or the like by the employment of a perfor-
ated pipe.
The position of this pipe relatively to the roll can he changed as may be required,
without interruption of the work. Without such adjustment water could not in
many cases be let into the roll at all, especially in the case of thinner papers.
Where it is desired to rapidly clean, or to change, any part separately, without
having to interrupt the work, the perforated pipe may be arranged on the frame
of the paper making machine, entirely independent of the dandy-roll.
On the accompanying drawing the dandy-roll a is shown provided with a
wide, open pipe b, revolving in the end bearing aud permitting of the introduc-
tion of a tube having perforations f. During rotation of the drum a, the jets
of water, steam or the like, issuing from the perforations cause thorough cleansing
of the same all over, and from the inside. The pipe d is carried by the arm i,
being secured by means of set screws or the like, and can therefore he rotated
around its longitudinal axis in order to change the line of issue of the jets. The
arm i can by means of set-screws, or the like, be raised or lowered in the frame
of the paper making machine, so that the pipe can be suitably adjusted and the
cleansing regulated even while the machine is working.
If the arm is of round form, it forms at the same time a vertical pivotal axis
for the pipe d, which can thus be adjusted in the horizontal plane, and so be set
at any angle to the axis of the roll.
On the drawing the pipe d is shown connected to the cock g of the water or
steam supply system, its other end, which is closed by a screw cap h, being free.
Such arrangement enables a speedy removal of the roll a while working; but
if desired, the outer end of the pipe d, instead of being free, may also be carried
by a bracket, similar to the arm i shown on the drawing, and in like manner
he connected to the water or steam supply.
The short pipe b is shown as of sufficient diameter to afford the space necessary
for adjusting the position of the perforated pipe d. Such an arrangement, how-
ever, is not absolutely necessary to, and does not form an essential part of, the
present invention. For instance, the roll a can be made of greater length and
its one end rest directly upon the bearing c. in which the roll thus itself rotates.
For the purpose of enabling alteration in the position of the roll # relatively
to the piped, to be effected, instead of the latter, the bearings of the roll may be
adjustably constructed.
"

page_text: Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what
1 claim is:.
In a dandy-roll for paper making machines, a perforated pipe (d) the position
of which relatively to the sieve of the roll (a) can be altered, for the purpose of
regulating the cleansing process, which pipe may be supported independently of
the roll (a) in order to promote rapid cleansing or exchange of the roll or pipe
while working, all substantially as described.
J. of Navumber 1807
HEINRICH FITTE.
Agent for Applicant.