US696967A - Tobacco-stemming rolls. - Google Patents

Description

UNrTnp @Tarts FnTnivT @einen JOSEPH GOODENOUGH IIAVENS, OF TRENTON, NEV JERSEY.

TOBACCO-erstmals@ aoLLs.'

SPECIFICATION :forming part f Letters :Patent No. 696,967, dated April 8, 1902. i

Application iiled January 2l, 1902. Selill NO- 901605- (NO 11105613 To a/ZZ w/"tom/ it may concern:

Be it known that I, JOSEPH GooDENoUeH I-IAVENS, a citizen of the United States, and a resident of Trenton, Mercer county, New Jersey, have invented a new and useful Improvementin Tobacco-StemmingRolls,of which the following is a specification.

My invention relates to the removal of the leaf portion of tobacco from the stem and to a stripping-roll constructed in accordance with a new principle discovered by me-namely, the cutting of the leaf away from the stem progressively by the action of cuttingsurfaces analogous in type and operation to those of a milling-cutter, which surfaces surround the stern, the leaf being fed to said cutters at such a rate of speed as will enable them most effectively to perfom their work.

My invention consists more particularly in the construction of the stripping-roll as herein set forth.

In the accompanying drawings, Figure 1 is a side elevation and partial section of my improved stemming-rolls placed in j uxtaposition for use. Fig. 2 is a cross-section ou the line :c of Fig. 1.

Similar characters of reference indicate like parts.

1 and 2 are supporting-shafts, upon which are formed or to which are secured in any suitable way the stemming-rolls 3 and 4. The roll 3 has on its periphery circumferential concave grooves 5, alternating with V-shaped channels 6. The roll 4 has on its periphery circumferential grooves 7, similar to grooves 5 of roll 3, alternating with tl-shaped projecting ribs 8. When the rolls 3 and 4 are placed in operating juxtaposition, the ribs 8 of roll 4 enter the V-shaped channels 6 of roll 3, as shown, while the grooves 5 and 7 form lenticular openings 9 between said rolls. IVithin the grooves 5 and 7 are formed cutting-surfaces, which maybe teeth 10, extending transversely said grooves. The lenticular openings 9 are to be of such cross-sectional area as that the butt-end of the stem of the tobacco-leaf passing through them will become compressed, while at the same time subjected to the cutting action all around its periphery of the teeth 10. The leaf which extends laterally beyond the stern on each side is also slit longitudinally by the shearing action of the tl-shaped ribs and channels. In operation the rolls are rotated in the direction of the arrows a b, Fig. 2, while the leaf is fed in the direction of the arrow c by any suitable means. The rate of feed and speed of rotation of the rolls is to be such as will permit the cutting-surface in the grooves to remove effectively the leaf portion from the stem portion.

The special advantages of the il-shaped rib and channel are that they enable the cuttingsurfaces in the grooves to be more nearly approximated than if said surfaces formed a circular in place of a lenticular opening between the rolls, and in this way through the compression of the stem said cutting-surfaces are caused more eectively to act upon the leaf to cut the same from the stem. As these rolls are arranged in the machine means are usually provided to enable them to separate slightly in event of foreign hard objects passing between them jointly with the leaf.. In such event if the surfaces between the grooves be not interlocked the tendency of the feed is to carry the leaf quickly onward through the now-enlarged space, so that it may not then be properly acted on either by the cutting-teeth in the grooves or by the shearing edges adjoining the grooves; but where the interlocking of the V-shaped portions exists, then, as is evident, the separation of the interlocking surfaces to the necessary extent does not make the channel between them any the less tortuous, and hence the leaf cannot be carried through any the more easily, while the sharp shearing edges continue to act on the leaf despite such separation.

It will be observed that in the roll 3 a pair of cutting edges d e alternate with the grooves. In both rolls 3 and 4 the inclined portions of the roll-periphery adjoining the grooves are smooth.

In another application for Letters Patent iiledby me December 9, 1901, Serial No.85,178, I have broadly claimed a roll adapted to remove the leaf portion of a tobacco-leaf from the stem having on its periphery a plurality of circumferential grooves, and within said grooves a multiplicity of small cutting projections, and in another application for Letters Patent led by me January 21, 1902, Serial No. 90,604, I have claimed a leaf-stem- IOO ming roll having a circumferential groove and on each side of said groove inclined smooth portions of its periphery. The subject-matter of the aforesaid applications is not claimed herein.

I claiml. A leaf-stemming roll having circumferential grooves provided with concave cuttingsurfaces, and alternating with said grooves pairs of circumferential cutting edges.

2. A leaf-stemming roll having circumferential grooves provided With concave cuttingsurfaces and alternating With said grooves V- shaped channels, forming pairs of circumferential cutting edges.

3. A leaf-stemming roll having a circumferential groove provided With a concave cuttingsurface formed of a multiplicity of small cutting projections, the said groove extending in cross-section over an arc less than a semicircle.

4. A leaf-stemming roll having a circumferential groove provided With a concave cuttingsurface, and on each side of groove inclined smooth portions of its periphery.

5. A leaf-stemming roll havinga circumferential groove provided with a concave cuttingsurface and in each side of said groove two oppositely-inclined portions of its periphery.

6. The combination of the roll 3 having the grooves containing cutting-teeth 10 and intermediate channels 6 with the roll 4 having grooves 7 and cutting-teeth l0 and intermediate ribs 8 of a conformation adapted to fit in said channels 6, substantially as described.

'7. The combination of the roll 3 having the grooves 5 containing cutting teeth 10, V- shaped intermediate channels 6 With the roll 4 having grooves 7 and cutting-teeth l0 therein and the V-shaped ribs 8, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of tWo subscribing Witnesses.

JOSEPH GOODENOUGU IIAVENS.

Vitnesses:

I. A. VAN WART, H. R. MILLER.

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