Å NEW OR IMPROVED PULPING OR RAG ENGINE USED IN THE MANUFACTURE OF PAPER
Year: 1885

page_text: машитасture of rарег.
"
I LORENTZ ALBERT GROTH K.Ġ.V. Civil Engineer and Proprietor of the Patent
Industrial and Financial Agency 30 Finsbury Pavement London E.C"do hereby
declare the nature of said invention for "Å NEW OR IMPROVED PULPING OR RAG
ENGINE USED IN THE MANUFACTURE OF PAPER a communication to me from
abroad by Friedrich Kurtz, Gentleman, of Pfullingen in the German Empire, and
in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
The object of this invention is to construct a mill to be used in the manufacture
of paper of a smaller size than the present ones but in the same time to give a
larger production with more regular grinding of the raw material into finer fibres,
being easier to clean and repair while preventing the material being spoiled by
grease from the stuffing boxes &c.
It consists of a frame A A' Figs. 1 and 2 the upper and lower ends of which
are provided with bearings a a¹ with rings b. b' in which rest alternately bars B
of steel, bronze, or other suitable metal, and pieces of wood H so that they form a
truncated cone, which surrounds a conical knife cylinder C, in which the knives
may be placed more or less slanting by means of the size of the ends of the cone
as required for different purposes,
The bars B. and H. are fastened in the bearers a a¹ and rings 6 b' by means of
wedges D and ribs c c' c¹.
On the top of the bearings a a¹ openings are provided in order to facilitate the
insertion of the bars B and H. the wooden pieces H being smaller than the bars B
and resting against their inner edges These wooden pieces H as well as the
wedges Dare cut from entirely dry wood and form a solid cylinder when the raw
stuff is let in.
The front piece A is screwed to the frame in order to facilitate the removal of
the knife cylinder C.

page_text: The parts A A' are connected with each other by means of bars, and are provided
with holes for the axle E the upper part of such holes being cast thicker to prevent
the clogging of the shaft by the pulp.
Because of the spaces in the frame A A¹ no stuffing boxes are required so
preventing the material being spoiled by grease therefrom.
When a faster grinding of the raw stuff is required it can be obtained by placing
the knives in the cylinder C. in a more slanting position.
For ordinary purposes when the raw stuff generally consists of a mixture of
linen, woollen, and wood fibres, it is advisable to have the edges of the bars shaped
round, the material thereby being more squeezed and torn than cut.
The raw material must be admitted in such quantities as to be within a few
centimetres of the axle or as shown by the dotted line Fig. 2.
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
1st A disjoinable paper mill in which the cylinder is formed of bars B. of steel,
bronze, or other suitable metal, alternately fitted with wood H and wedges D
placed in bearers a a¹ with rings 6 6' as illustrated in the drawings.
2nd The arrangement of the spaces in the frame A A² as before described and
illustrated in the drawings.
3rd The more or less slanting position of the knives in the knife cylinder C.