US1606963A - Machinery for decorticating the leaves of fibrous plants - Google Patents

Description

Nov. 16', 1926.

G. SEYMOUR MACHINERY FOR DECORTICATING THE/ LEAVES OF FIBROUS PLANTS Filed June 2. 1926 g 8" MWENTOE GEOBGQ SE mmue Patented Nov. 16,1926.

. enonen SEYMOUR, or nannow, ENGLAND.

a acnmnny son DECORTICATING THE Leaves or rnsnousrnanrs."

' Application filed June 2, 1926, Serial No. 113,235, and inGreat Britain January 19, 1925.

so forth. The present invention is specially applicable to the elongated spiky sisal leaves (Agave sisalcma) to remove the meaty or pulpy green bulk and to obtain the small J by a strip or blade member.

percentage of fibrous material.

Machines of this type usually include a drum or drums of cast iron provided on their peripheries respectively with a'plu'rality of circumferentially spaced decorticator knives of angular section. Said drum rotates over a concave or bed of phosphorbronz'e, and theleaves are fed between the. I drum and bed whereby all the extraneous- This object is effected by, replacing theusual concave quadrant or arcuate bed-plate This is of phosphor-bronze or the'like, and dis-posed in an inclined position across the periphery of the drum. It is equally spaced away therefrom and as, by virtue of its inclination, it follows to an extent the circumferential curve of the drum, it is accordingly helically bent to conform to thisshape.

' In order that the said inventionmay be readily understood, reference is directed to the following 'clescription'and accompanying drawings, wherein r igure 1 is an end View of a drumand two diametrically opposite bed-plate bars,

7 and associated fittings, shown, for example,

as employed in the construction of a decorticator according to my co pending application No. 113,234.

Figure 2 is a development of the bedplate, and portions of the supporting frames. In the drawings, 1, 1 represent the side longitudinal chassis frames of a vehicle, as

this invention is particularly applicable to drum a suitable number of knives 5 'are fixed (which, if desired, may be inclined across the periphery from side toside) The said improvedbed-plate, or more cor rectly bed-bar -6, may be of any suitable section, and may present a rounded, fiat or angular edge facingthe'drurn. For example, j

it may be of" square or' rectangularsection. VJ hen a bed-bar ofthis nature is mounted acrosstWo curved side frames 7, 7 concentric.

with the druml2, the; parts. of the leaves a which have been stripped can hangoverthe damaged as the leaf is further fed in.

The bed-b21126 maybe adjustable withrelation to the drum manner, for instance, by; mounting the bedbar carrier 8 slidably at 9 in the frames 7,7;

Inthe drawings, the numeral 10 indicates a gripping conveyor guide. forming no part of the present invention, and more particularly described in .the said'coepending appli-' cation. V

It is preferred to employ a plurality of bed-bars 6,; (such as two diametrically opposite) operating in accordance with the said co-pending applicatiom and, as illus trated, the mounting of anotherone underneath the drum is similar to the mounting hereinbefore described, similarv reference numerals indicating corresponding parts.

It will'be apparent that the present in vention resultsin lightness of construction, I

and in this respect it is particularly applicable to the transportable decorticating 7 plant described in my oo-pending application' No. 113,235 of even date hereof. It is,

however, applicable to most or of decorticators.

I claim '1. In a machine for decorticating leaves of fibrous plants, spaced side members, a drum rotatably mounted between said mem bers, knives on said drum, and a narrow strip-like helical bed-bar mounted onsaid many types side members. 4

2. In a machine fordecorticating leaves of fibrous plants including spaced side members. having guides, a,- drum rotatably mounted between said members, knives on said drum,'and a narrow strip-like bed-bar havin straight parallel side edges and arranged obliquelybetween said side members conforming to the curvature of the drum, parallel supporting members carried by the underside of the bed-bar and slidable in the guicles,' and adjusting screws carried by the side name members and en- In testimony whereof I have affixed my 19 signature heteto this 19th clay of April, 1926; r

'j GEORGE SEYMOUR.

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