US31181A - Improvement in hemp-brakes - Google Patents

Description

LANrrnn STATES Errea.

J. B. MCOORMIOK AND NV. B. BAKER, OF ST. LOUIS, MISSOURI.

nvlpnovlalvllatn INVHEMP-BRAKES.

' Specification formingpart of Letters Patent No. 3 E ,ESL dated January 2 186i.

To all whom t may concern.-

Be it known that we, J. B. MoGoRMroK and W. R. BAKER, of St. Louis, in the county of St. Louis and State of Missouri, have invented a new and Improved Machine for vHackling and Scutching Hemp; and we do hereby declare that theV following is a full, clear, and exa-ct description 'of the same, reference being had to the annexed drawings, making a part will proceed to describe it.

A represents a framing, which may be constructed in any proper manner to support the working parts'of the machine. B isa drum, the shaft a of which is fitted in suitable bearings on the framing. The drum B is formed ol" two heads, b b, keyed on the shaft a, one near each end, said heads being provided with radial slots o, between which longitudinal bars d are secured, the bars d being parallel with the shaft a. rlhe slots c and bars cl'do not project out as far as the peripheries o f'thev heads b b, sufficient space being allowed for semicircular recesses e to be made in the inner sides of the heads at their peripheries.

Between the barsv d of the drum there are` placed bars j', the latter being fitted loosely between the former, and having their ends passing through the radial slots c of the heads I) b. The ends of the bars f are allowed to work loosely in the slots c-that is to say, in a direction toward and from vthe centers of the heads-the slots c being considerably longer than the depth of the bars f, to admit of a eertain degree of play or movement of the latter. (See Fig. l.)

To the framing A and at each end of the drum B there are attached two stationary cams,

in Fig. l. The bars f are armed at their outer surfaces with spikes or teeth j, as shown in both figures,

In the framing A and at points below the drum B there are placed two rollers, (l C. These rollers are parallel with the shaft a, and around them endless belts la 7c pass, to which slats Zare attach ed at a suitable distance apart. rlhe ends of the slats Z gear into the recesses c in the peripheries of the heads b b, as shown in Fig. 1.

The operation isl as follows: The drum B is rotated by any convenient power in the direction indicated by arrow l, and the hemp is fed to the machine by hand, the hemp passing between the drum B and the endless belt of slats, the latterbeing moved i`n the direction indicated by arrow 2 in consequence of the heads b b of the drum engaging with the ends of the slats. The upper part ofthe end less beltA of slats forms what may be termed a concave, 7 and the hemp is drawn in between it and the drum, and as the bars f of the drum approach the slats Z the cams g force outward the bars f, the ends ofthe latter passing over theouter edges of said cams. By this arrange` ment the teeth j of the bars f are made to act upon the hemp, the teeth and bars being after such action drawn inward toward the center of the drum by the cams 7th. The zigzag cams 't' c' give a lateral or longitudinalmovement to the bars f, the prominences a of one cam being placed opposite the depressions b of the other.. (See Fig. 2.) This longitudinal or 'lateral vibrating movement of the bars f enables the teeth j to scutch the hemp and cleanse it thoroughly from all boon or woody matter, while they at the same time haekle the hemp perfectly and without producing an undue quantity of tow, the latter being discharged off the endless belt'of slats or taken therefrom by any proper stripper. The with drawing of the teeth' j within the drum prevents them carrying any tow or particles of hemp around with the drum. The hemp,\vhile being acted upon,.is held at the ends by the hands of the attendants or operators, and is withdrawn or allowed to pass through when fully acted upon and a fresh supply fed to the machine.

We do not claim, broadly, the invention of lspiked arms that move in and out of the eylinder, as they are shown in Gledhills English. patent of 1855; but,

2 l 31mm Having thus described our invention, what and for the `purposes herein shown andA de- We claim as new, and desire t0 secure by Letscribed.

ters Patent, is 1 l. The combination 0f the endless belt 7c ICICQICK' with the radially-sliding armed bars f, as and n for the purpose hel-ein shown and described. Vitnesses:

2. Giving a lateral movement to the said CHARLES C. LACY,

radially-sliding armed bars f, in the manner J OIIN SHANDY.

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