US778193A - Grain decorticating and grinding machine. - Google Patents

Description

PATENTED DEC. 20, 1904.

' J. H. P. L. HARTMANN.

GRAIN DBGORTIGATING AND GRINDING MAGHINE.

APPLIUATION .FILED NOV. 28. 1902.

2 SHEETS--SHEET 1.

N0 MODEL.

PATEN'TBD DEG. zo, 1904.

J. H. I. L. HARTMANN.

GRAIN DECORTIGATING AND GRINDING MACHINE.

APPLICATION FILBD.NOV.28.1902.

NO MODEL.

- a specication.

No. F(478,193.

Patented December 20, 1904.

PATENT OEEICE.

JOHANN HEINRICH FRIEDRICH LOUIS HARTMANN, OF HAMBURG,

GERMANY.

GRAIN DECORTICATING ANDGR|NDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 778,193, dated December 20, 1904. Application filed November 28, 1902. Serial No. 133,102.

To all whom/ it may concern:

Be it Aknown that I, JOHANN HEINRICH FRIEDRICH LoUIs HARTMANN, a subject of the German Emperor, and a resident of Ham burg, Germany, have invented certain new and useful Impifovements in Grain Decorticating and Grinding Machines, of which the following is The present invention relates to improvements in grain decorticating and grinding machines for removingthe cuticle or outer hull. from cereals and the like, and more particularly refers to that class of decorticating-machines in which a suitable 'decorticating or` grinding drum, roughened or provided on its outer periphery with a suitable decorticatingsurface, revolves in a suitable casing and cooperates with a suitable stationary grinding surface or shell wholly or partly encircling or surrounding the said decorticating-drum, the latter and the stationary grinding-drum being set lat such distance apart as to give the requisite trituration and to rasp off the cuticle or hull from the grain, &c., without Inashing the latter.

The improvements relate especially to the' formation, construction, and arrangement of the stationary grinding-shell and to the means for adjusting the same; and with this end in View my invention consists in certain novel features of construction and combinations of parts, as will be hereinafter fully described,

and pointed out in the claims, with reference to the accompanying sheet of drawings, in whichj Figure 1 is a vertical cross-section of a decorticating and grinding machine made in accordance with and embodying my invention; and Fig. 2 is an elevation of the machine as it appears after the removal of the front wall ofthe machine-casing, the undulated grinding-,shell for the upper decorticating-drum being broken away and the outer adjustingbars for the said grinding-shell removed in order to show .its inner tubular supportingbodies, which are shownA partly in section.

j Similar letters refer to similar parts throughout both figures.

In the example shown two revolving horizontal drums a and a2, faced with suitable decorticating-surfaces and 52, respectively, are mounted with their shafts c and c2 in a suitable casing d, provided with a plurality .of hinged doors g, giving or allowing access to the interior of the said casing. At the top of the casing is a suitable feeding-hopper e, provided with a feed-roller f of any wellknown construction,fand at the bottom of the casing a suitable outlet e/ lfor the decorticated grain, &c. t

Between the two decorticating-druinsa and a2, preferably arranged one above the other a suitable distance apart, there is arranged a vgrating 7L, forming the vfront end wall of a chamber 7l. This chamber is in communication through an outlet la with a ventilator or vother sucking device (not shown in the drawings) adapted to suck o, through the grating 7L, chamber c', and outlet in during the operation. of the machine, the hulls, dust, &c.

In front of the drum a is arranged a grinding-shell Z', -consisting of any suitable elastic or iieXible materialsuch as leather, emerycloth, and the vlikeand being placed in such ,an undulated trace around the drum ce that the operative decorticating-faces are formed.

by the facing 5' of the drum a and by the ridges-that is to say, the points of the undulated grinding-shell Z/ which are nearest to the said drum cb' b. The parts or faces of the Vgrinding-shell Z which are remote from the drum and which form the troughs or depressions between each two ridges remain inoperative.` To retain the flexible grinding-shell Z in the desired undulated form or position,

tubular supporting-bodies m', preferably of semicircular cross-section, are inserted into the inner depressions of the said grindingshell, while into the outer depressions of such shell are placed suitably-shaped bars n', or, in other Words, the flexible grinding-shell Z is alternately wound between inner and outer supporting-bodies of 'suitable form and shape. The position of the bars n', and consequently the spacing distance between the ridges of the grinding-shell Z and the drum a may be properly adjusted by means of screw-threaded adjusting-spindles 0', working in suitable nuts interior of the bodies m.

of a cross connection p, attached in any suitable manner to the walls of the casing (Z. The walls fa of the hollow bodies m', supported by the side walls of the casing (Z in any suitable manner, may be perforated in order to allow a part of the dust produced during the decorticating operation to enter or to be sucked into the interior of the hollow bodies m and carried away through a suitable conduit o by means of a ventilator or the like in communication with said conduit and the As the ventilator device to be connected with the exhaust-conduit e may be of any well-known construction, it is not shown in the drawings.

One end or edge, preferably the upper one, of the grinding-shell Zl is attached to two or more screw-threaded adjusting-spindles 1", suspended from. a suitable cross connection t of the casing and adapted to be adjusted therein as to height or position by means of nuts s. When the cross and guide bars a have been somewhat removed by loosening or screwing back the spindles d, the grinding-shell Z is free to be drawn upward. This may be effected by raising the screw-spindles o" by means of the nuts s. As the grinding-shell is drawn upward other parts of its surface will come into the operative position opposite to the drum a Z, or, in other words, other parts of the surface of the grinding-shell surface are caused to form the operative ridges and may be secured in such position by again screwing' home the bars a or their spindles 0, respectively. Thus worn-out or chafed parts of the grinding-shell. may be replaced by adjacent fresh or sound parts and the whole surface of the grinding-shell step by step used for the grinding operation. After the whole inner surface of the grinding-shell has been worn out the grinding-shell Z may be reversed and its outer surface used up in the same manner.

The grinding-shell Z2 shown in connection with the lower decorticating-drum Z2 Z2 c2, its supporting, guiding, and adjusting means m2 n2 02 p2 r2 s2 Z2 a2 e2 are of the same form, construction, and arrangement as that described in connection with the grinding-shell Z, and need, therefore, no further detailed description.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-

l. In adeeortieating-machine, the combination with a decorticating-drum, of a plurality of supporting-bodies radially mounted in close proximity thereto, and a flexible d ecorti cati ngbody interwoven between said supports.

2. In a decortieating-machine, the combination with a decorticating-drum, of a plurality of adjustable supports radially mounted in close proximity thereto, a hollow support mounted between each adjustable support, a perforated wall in each hollow support, and a flexible decortieating-body interwoven between the supports so as to lie between the adjustable supports and the drum.

3. In a decorticating-machine, the combination with a decorticating-drum, of a plurality of adjustable supports parallel to the axis ofthe drum, a hollow parallel support between each adjustable support, a perforated wall in each hollow support, a flexible decorticatiiig-body interwoven between the hollow and adjustable supports and adapted to lie between the adjustable supports and the drum, and means for adjusting the flexible decorticating-bmly transversely to the supports.

4. In a decorticating-machine, the combination with a casing and a revoluble decorticating-drum mounted therein, of a support fixed in said casing, a fiexible decorticatiiig-body adjustably secured to said support, a plurality of adjustable supports mounted radially to the axis of the drum aud adapted to hold the flexible body in contact with the periphery of said drum, and a plurality of hollow supports mounted between the adjustable supports and between the periphery of the drum and a portion of the fiexible decorticati11g-body.

5. In a decorticating-machine, the combiuation with a casing and a revoluble decortieating-drum mounted therein, of a support fixed in said casing, a flexible decortieating-bmly adjustably secured at one end to said support, a plurality of adjustable support-s mounted radially to the axisl of the drum and adapted to hold the decorticating-bod y in contact with the periphery of the drum, a plurality of corered hollow supports mounted between the adjustable supports parallel thereto and between the periphery of the drum and a portion of the decorticating-body, and a perforated wall between the drum and each hollow support.

JOHANN lllllNltlCll lllillllililCll LOUlS llll'lhilAh'N.

Witnesses:

MAX Knmlrnu, OTTO lV. HnLLMuIou.

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