US1054753A - Machine for removing the wood from ramie-stalks in the dry state. - Google Patents

Description

B. COULON. MACHINE FOR REMOVING THE WOOD FROM EAMIB STALKS IN THE DRY STATE.

APPLICATION FILED SEPT. 16, 1912.

1,054,753. Patented Mar. 4, 1913 Inventor:

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EMERY coiuLoN, or ma row, enter-on, ASSIGNOR 'io socIETn ANONYIVIE sures TEXTILE, on anrwnnr, BELGIUM.

MACHINE 'FOR REMOVING THE WOOD FiTOM RAMIE-S'IALKS IN THE DRY STATE;

To all whom it concern Y Be it known that I, EMERY CouLoN, a subject of' the King of Belgium, residing at Blaton, in the Kingdom of Belgium, have and useful Improvements in Machines for Removing the Wood from RamieStalks in the Dry State, of which the following is a specification.

The present invention has for its object a machine for the treatment of ramie stalks in the dry state with a view therefrom the ligneous portions in order to obtain in the form of ribbons the fibers inby the subsequent removal of the pellicle and the gum which unites them.

The machine is of the known type in which the ramie stalks afterv having been crushed between pressure rollers, are conducted onto an anvil where they are struck by a rotary. hammer constituted by a polygonal roller with rounded angles :for breaking the wood into pieces which are then deta'ched and removed from the fibers by r0- tary heaters. In the machines of this type such as hitherto constructed, the hammer only struck the the wholeof the operation of the detach ment of the wood to the beaters.- Then again, owing to the vigorous traction exerted by the heaters upon the stalks, the latter'passed too rapidly beneath the hammer in the intervals between the blows.and the result wasthat, as the intervals between these blows was excessive, the heaters had to detach excessive lengths of wood and fre quently broke the fibers at the same time.

the want of resiliit could not adapt its blows to the variable thicknesses of the stalks so that sometimes the woodwas insutliciently broken and sometimes the fibers were crushed and spoiled.

These defects are avoided in machine which is illustrated in tion in Figural and in longitudinal section in Fig: 2 of the accompanying drawing.

In this machine, the bundles of dry ramie stalks, which are merely undone, are placed upon an endless apron 1 to which'a movement of translation in the direction indi wheel 13 mounted upon the same shaft as the the vibrations of the apron 1, the stalks are distributed over its entire width and pass between the crushing rollers 2 and Specification of Letters Patent. Application filed Se tember16, 1912.

to eliminating stalks at intervals and left.

Patented Mar. 4,1913. Serial No. 720,646.

| 2' in the form of a uniform layer: these -rollmeshing together ing hand wheel and 5.

In Fig. 2 the broken line Z1 represents the path followed by chine, o The crushing roller 2 is mounted upon a support 7 which is pressed downward by a spring 8 which enables it from the fixed roller 2' when pass between them.

n leaving the crushing. rollers, the rods pass onto the anvil 9 where they are struck ,by the angles of the hammer 10 actuated by a toothed Wheel 11 upon which the chain 12 moves: this chain passes over the driving wheel 13 mounted upon the same shaft as the hand wheel 6. The anvil 9 is fixed and the hammer 10 is mounted in such a manner that die able to experience-slight displacements 111 thevertical direction, according to or the hardness of the material to be broken up. With this object its supports 14 'rest upon springs 15 and are pressed downward by other springs lb. An adjusting screw 17 enables the tension 0 these springs to be regulated.

and driven by the operat (3 through gear wheels 4:-

hargl bodies the present side eleval1e ammer is square in section and the upper face of the anvil presents a very pronounced concave curvature and it is longer than its plane faces, in such a manner that one of the'angles of the hammer invariably comes into contact with the stalks upon the anvil before the preceding angle has become disengaged therefrom completely. The broken stalks are pressed toward the beaters l8 and 19 owing to the rotation of the hammer 10; these boaters receive their movement from a chain 20 passing over the toothed wheels 21 and 22 and from the pinions 23 and 24. Each of the beaters 18 and 19 is constituted by two bars carrying at each of their extremities channeled bars 25 and 25 which strike the broken stalks and 1 free the bark from the pieces of wood. The strips-or ribbons thus formed fall onto an endless apron 26 constituted by a net, through the meshes of which the pieces of Wood and the dust produced by the beating pass.

The operation of lows: The bundles of ramie stalks are merely ,undone and placedupont-he endless apron ers are driven by the gear wheels 3 and 3- the-ramie stalks in the ma-;

to separate slightly the machine is as fol- 'than in the known machines and conse- 1, the vibrations of which automatically distribute the stalks into a layer of approximately uniform thickness. This layer of stalks passes between the crushing rollers 2 and 2 and then onto the anvil from which it passes between the boaters 18 and 19. Owing to the traction of the heaters .upon the stalks, the latter are stretched between the extremities of the anvil after each blow of the hammer, then turned downward bent over the anvil by the next blow which serves to detach the wood. On the other hand, the angle of the hammer which reaches the stalks before the preceding angle has become coi n plctely disengaged therefron'i, prevents the stalks from slipping upon the anvil, so that the breaks in the wood are closer together quently the wood becomes detached more readily and the beaters'have only to complete the detachment of smaller pieces of wood than hitherto and which are already detached to a large extent. The resiliency imparted to the hammer by the springs 15 and 16 prevents the crushing of the fibers at the places struck by the hammer. Finally the piecesof wood detached and the dust remaining in the fibers are eparated by the vibrations of the openwork endless apron upon which the fibers are discharged and fall between the meshes of this apron so that all the wood is removed automatically.

What I claim and desire to secure by Letters Patent ot' the United States is 1. A machine for removing the ,wood from ramie stalks in the dry state, comprising in combination a rotary hammer of polygonal 1 cross section, spring supports for this-hammer and an anvil the concave face of which presents a curvature of which the axis of the hammer forms the center and of which the length is greater than the distance between two consecutive angles of the hammer.

A machine for removing the Wood from ramie stalks in the dry state, comprising in combination a rotary hammer of s uare cross section, spring supports for this ammer and a trough-shaped anvil the concav-,

ity of which is longer than the distance between two consecutive angles of the hammer.

3. A machine for removing the wood from rumie stalks in a dry state, comprising in combination a rotary hammer of square cross section, spring supports for this hammer and an anvil the concave face of which presents a curvature of at least a quarter circle, of which the 'axis of the hammer forms the center and ends in a rounded-01f rear edge.

4. A machine for removing the wood from ramic stalks in the dry state, comprising in combination a rotary hammer of s uare cross section, spring supports forthis ammcr and a 'trouglrshaped anvil the concavit v of which is longer than the distance be tween two consecutive angles of the hammer and of which the rear edge is convex.

In testimony whereof I afiix my signature in presence of two witnesses,

EMERY COULON.

Witnesses LrioN Putnam), '(Tius. Ror NASMITH.

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