US1136959A - Bark-stripping machine. - Google Patents

Description

C. C. HOCKLEY.

am: sTmPPmG MACHINE.

APPLICATION FILED NOV. 16| 1912. l 91369959 Patented Apr. 27, 1915.'

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C. C. HOCKLEY.

BARK STRIPPINGMACHINE. APPLICATION FILED Nov. 16. 1-9|2 Patented Apr. 27, 1915.

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W/ m/Essfs declare that the CLAUDE CLEMENT HOCKLEY, F GRAND MERE, QUEBEC, CANADA.

BARK-STRIPPING MACHINE.

Specification of Letters Patent.

Patented Apr.. 27, 21915.

Application filed November 16, 1912. Serial No. 731,865.

l T0 all ulzom it may concern Be it known that ll, CLAUDE CLEMENT HOCKLEY, a citizen of the United States of America, residing at Grand Mere, in the Province of Quebec, Canada, have invented certain new and useful VImprovements in Bark-Stripping Machines; and I do hereby following is a full, clear, and exact description of the same.

This invention relates particularly to machines for stripping or removing the bark from wood, machines constructed according to this invention being especially adapted for use in stripping the bark' from logs or blocks used in the production of pulp.

The invention has for an object to provide a machine of this type which will be capable of operation with less labor, be more rapid in its operation, and therefore more economical than those heretofore used.

For further comprehension, however, of the invention and of the objects and advantages thereof reference will be had to the following description and appended claim, and to the accompanying drawings forming part of this specification in which similar referencel characters indicate the same parts and wherein;

Figure 1 is a side elevation of va bar stripping machine constructed ac aording to my invention; Fig. 2 is-a`plan view of the barrel and its operating means; Fig. 3 is an enlarged transverse section on the line 3-8 Fig. 1, and Fig. 4 is an axial section of a portign of the barrel taken on the line 4-4 Referring now to the drawings my improved bark stripper comprises a rotatable angular member preferably in the form of a. barrel or cylinder 1 the shell of which may be made up as here shown of a number of sheet metal sections, or constructed in any suitable manner. This barrel is open at both ends to provide wood receiving and discharging openings, the wood to be treated being fed in suitable lengths or sizes into one end of the barrel and discharged with the separated bark at the other end as will be presently pointed out. I prefer to incline the axis of the barrel slightly to the horizontal as shown in Fig. 1 to facilitate the travel of the wood therethrough. This barrel is adapted to be rotated continuously and as it is desirable to have the open ends thereof unobstructed to allow of the passage of the logs or blocks which are sometimes of considerable size T prefer to mount and rotate the cylinder by devices which do not project in any Way across the said open ends. As hereY shown a pair of running rings 5 are mounted upon the periphery of the barrel one near each end, being secured thereto by any suitable means such as the rivets 6. These rings rest upon small lianged pulleys or rollers 7 which are fixed rigidly upon a pair of shafts 8 which latter are mounted in suitable bearings 9 and located one on each side of the barrel and under the sides thereof and having their axes parallel to the axis of the barrel. The anges 7 of the pulleys 7 extend across the sides of the rings 5 and the inclination of i the barrel tends to keep the rings 5 in engagement with such flanges and in proper position upon the pulleys 7 Suitable driving means is applied to one of athe shafts 8 to rotate thel pulleys 7 thereon and cause the latter to rotate the barrel, the weight of the barrel providing suflicient frictional engagement between the pulleys and rings for this purpose.

As here shown a bevel gear 10 is mounted rigidly on one of the shafts 8 intermediate the ends Ithereof and intermeshes with a second bevel gear 1l rigid on a stub shaft 12 mounted in suitable bearings 13, the shaft being driven by means of a belt 14 over a pulley fixed thereon, the belt receiving its power from any suitable source not necessaryhere to be shown. As will be apparent my improved arrangement provides the ends of the barrel with central openings through which the wood may be readily passed while the barrel is rotating.

To assist in giving the required motion to the wood in the barrel the interior surface of the latter is provided with a plurality of annular baffle flanges and longitudinal lifting flanges 21, which latter extend from end to end of the barrel. These flanges may be made as here shown of angle irons one leg whereof is riveted' to the barrel," the annular flanges 2O being reinforced by the webs 20 which as here shown preferably face toward the intake end of the barrel.A The wood to be treated may be fed to the barrel' by any suitable means, the means here indicated comprisingan endless conveyer chain working in the bottom ofa trough 26 which latter has an opening 27 communicating with an inclined chute 28 leading into the feed end of the barrel.

passing s Suitable means may be provided at the discharge end of the barrel to separate the loose bark from the wood.4 To this end I provide the lower end of the barrel with an annular grating 30 rotating therewith and forming an extension thereof and between the bars of which the bark drops onto a chute 3l fromwhich it may be conveyed away in any desired manner. rllhe stripped wood travels over the grating and is discharged from the openvl end of the barrel and may be conveyed away by any suitable means, a chute 32 leading to a conveyer .l shown in cross section at 33, being here in- 15 dicated for such purpose.

To assist in the stripping of the bark I Water may be suppliedv if desired into the barrel through a pipe 35 leading from any source of supply.

In the operation of the machine the barrel is kept rotating continuously and the logs to be stripped (which are first cut into suitable lengths, a length of about onequarter the diameter of the barrel being i suitable,) are fed into the receiving end of .the barrel, which is here indicated by the ,reference numeral 37, being discharged are subjected in the barrel strips the bark zt,

therefrom and the logs are finally discharged from the discharge end of the barrel, indicated at 38, and are carried away, the bark falling through the grated extension of the barrel onto the chute 31.

lfVhat I claim is as follows:

A machine for use in stripping the bark from wood and consisting of a rotatable barrel having its ends open to provide re ceiving and discharge openings, a plurality of interior annular baille flanges spacedlongitudinally of the barrel and lifting flanges extending between the annular flanges and being disposed lengthwise of the barrel.

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

CLAUDE CLEMENT HOCKLEY.

Witnesses ALEX CURRIE, A. R. EVANS.

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