US1655628A - Barking drum - Google Patents

Description

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Jan. 10, 1928. 1,655,628

C. ROYEM BARKING' DRUM Filed Nov. 15. 1926 4 Sheets-Sheet 3 Jan. 10, 1928. 1,655,628

. c. ROYEM BARKING DRUM Filed/310mm. 1926 4 Sheets-Sheet 4 the bark from form, when the drum is rotated, logs slides within the drum,

While this form of drum Patented Jan, 19,

UNITED STA .TLLINQIS, ASSIGNOE TO HERBERT VI. GUETTLER, OF

GAR-STEIN BOYEM, 0J3 OHTGAGO,

. I CHICAGO, ILLINOIS.

Application filed November 15, 1926.

This invention relates TES BAR/KING DRUM.

to barking apparatus, and more particularly to barking drums. There are three general forms of construe tion of barking drums which briefly in connection One form employs I will discuss with my invention.

bars of angle cross-sec tion, or a combination of. angle bars and channel bars, which are mounted within the drum with their sid thereof. This form has it-canses excessive splitting unsatisfactory as and brooining of the log objection.

The tion has channel cent each other bars to le es directed inwardly been found to he s, which is a serious second form of drum under consideramounted closely adjaave between the bars narrow openings or slots for escape of the removed bark, the open outwardly of the being disposed the base or bight portions drum radially thereof. This the inner surface of which inwardly of the produces a drum,

faces of the bars drum and being directed is practically continuous so far as tumbling the logs or In the third form of drum, the

having any effect in removing the logs is concerned.

In this the mass of without posi of excessive splitting logs, its output is, as

greatly limited.

removal of the bark is efiected by the combined action of the logs rubbing together and the bars of the drum acting upon of drum is illustrated bert TV. Guettler, 1,311,226, for barking the logs. This form in the patents to Hernunibered 1,811,225 and drum, issued'July 29,

1919. In this form the bars are of skeleton formation and U-shape These bars are spaced in cross-section.

an appreciable distance apartto form pockets permitting the corners of and the bight portion posed inwardly of, and are smooth a of the the logs to be engaged by the bars,

s of the bars are disdruni radially therend rounded.

rotation of the drum the logs are subjected to a positive rolling and are caused to strike upon the rounded inner portions This serves to very quickly the bark and remove i action is supplements tumbling action and slide over of the bars. break and loosen t froin the logs. This d by "the rubbing t0- and of the type disclosed in or jamming thereof.

During Serial m. 148,411.

gether of the logs so as to quickly rub off any adhering particles of bark. This drum thus combines all of the desirable features of the drums ofthe first two avoiding the objections to such drums, and has the additional advantage of light but strong and durable construction. 7

The type of drum disclosed in the Guettler Patent- 1,311,226 above identified has been found to be highly efficient in use, but is subject to one objection. The logs which are ordinarily barked in drums vary in length from two to four feet, being occasionally in excess of four feet in length, the drumsbeing, say, ten or twelve feet in diameter. It has been found that logs of certain lengths will sometimes wedge or jam endwise between the bars of a drum the Guettler Patent 1,811,226. This is due to the shape of the U- bars and the relation between the coinple' nientary faces of these bars/ I have found that by constructing and arranging the bars in a certain way, it is possible to produce a barking drum which will thoroughly bark logs of any length, between the practical limits, without any wedging My drum thus combines all the advantages of the third type of drum above discussed with the additional advantage of eliminating wedging or janimiiig of the logs.

In order to more clearly illustrate the differences and advantages of my drum over the Guettler drum, I have shown several diagrams of U-bars as used in the two drums,

respectively.

' In the drawings 2-- Fig. 1 is a diagram of two of the bars of the Guettler drum, illustrating the relation between the U-bars;

Fig. 2 is a diagram enlarged;

.Fig. 3 is a fragmentary sectional view of the Guettler drum, illustrating the positions assumed by logs of different lengths;

Fig. 1 is a diagram of two of the bars showing a log jammed between them;

Fig. 5 is a diagram of two of the U-bars of my drum illustrating the relation between the bars;

Fig. 6 is a diagram of one of the bars of my drum of one of the U bars,

types while Fig. 7 is a side elevation of a drum con structed in accordance with my invention;

Fig. 8 is a fragmentary sectional View of my drum illustrating the positions assumed by the logs;

Fig. 8 is a diagram showing the angle between the end of a log of extreme length a id the side of a bar of my drum;

Fig. 9 is a fragmentary perspective detail of the construction ofniy drum.

Referringto Figs. 1 and 2 of the drawings, it willbe noted that the opposed faces a of adjacent ll bars a of the drum A (which is from ten to twelve feet in diameter) are disposed at an angle of approximately to each other, and that the faces a of each ti -bar are disposed at an angle of approximately to each other and at an angle of approximately 2: to the radius ej of the drum.

The bars a are of skeleton f .rniation, being constructed preferably of rolled steel. In practice the drum is from ten to twelve feet in diameter, as before indicated, and is filled about half full of logs be barked, the drum being; rotatably su ported and rotated in any suitable or prei rred manner, several of which are well known in this art. It has been found that some logs of certain lengths will wedge or jam endwise between the bars of this drum. This is due to the followingz-The angle of the sides of the bars is such, as experience has shown, that logs of certain lengths can and sometimes do become jammed between complementary faces thereof as shown in the instance of the longest log in Fig. 3. As shown in. F 4, the ends of the log are actually deformed in this jamming action, particularly when the weight of other logs on top of it is imposed. thereon, and under these circum stances the log becomes so tightly lodged as to require extraneous means to dislocate it. Obviously operating eiliciency of the drum is seriously interfered with, by logs jam ining in the manner stated.

In constructing my drum, the bars have their sides 2 disposed at an angle of approx:- imately 90 to each other, the angle between the outer face of each side and the radius a?) of the drum being approximately 45. In my bar the angle between each of the sides2 and the radius a-5 is much greater than 25 as in the case of the Guettler bar above discussed, being approximately 45 as shown in Fig. though this angle can be varied within certain limits provided it is suliicicnt to produce a relieving angle be tween the complementary faces of the bars and the ends of the log. In a ten or twelve footdrum, for instance, bars of this type would lie with adjacent faces approximately to each other, as shown in 5'.

I have found this angle of 45 to the radius suficiently great, in a drum having an interior diameter of ten feet, to be relieving for logs of a length somewhat more than live feet, which is ample as it is very exceptional to bark logs five feet long in a drum. By relieving I mean that, with tacting with two complementary bar faces, the angle between the face of the bar and the log, end contacting with it diverges toward the drum center and is such as to prevent jann'ning of the log, permitting the log to readily move from between the bars on continued rotation of the drum. This will be clear from 8, Fig. 8 showing the decided angle in the of the longest log. In fact, only the edge of the log end con- (acts with the inclined i'face of the bar. This 'nates all possioility ofjaniming and yet re the desirable positive tunibling action hereinbefore referred to.

will be upureciatcd that it is within the broad aspects or my invention to dispose but one side of the bars this relieving angle, it being obvious that relief of a log; at one end or ild be relied-upon. 'By this '1 also within the bread as t .ion to make alternate bars cs at reneving angles and the re- 7 hing; ones with the non-relieving angles of "ie prior art.

In actual construction each of the bars 1 is pro 'ided at each outer edge with an outvardl extending base flange 4. The drum includes the bars 1, the flanges a of which y riveting, or in any other suitrred manner, to annular hoops 5 of angle or anyother ferred oross-section. The n parallel relation and are spaced an ap oreciable distance apart to provide pockets between the bars of proper breadth to ensure tl* it the bars will contact with the ends of the logs for positively tumbliug them during rotation of the drum. At suitable intervals I provide pairs of angle hoops 6 arranged with their flights projecting outwardly from the drum and disposed opposite and adjacent each other, Solid rings 7 are positioned between the opposed flights of the pairs of hoops 6, the rings and the flights of the hoops beingsecured together by riveting; or in any other preferred manner. The hoops 6 are secured to the barsl in the same manner as hoops and the rings may be made to travel upon supporting rollers ar ranged in a known manner for rotatably supporting the drum. The drum may be rotated by means of driven pinions (not shown) meshing with a gear ring 8 secured to the drum in the same manner as the rings 7 are secured. I also contemplate supportbars are disposed ing and driving the drum by chains, or in any other suitaole or preferred manner well known in this art.

l claim l 1'. In a barking apparatus, a rotatable a log consuitable or preltll) drum, and a plurality of tumbling devices mounted within the drum and spaced apart an appreciable distance forming pockets for catching the corners of logs for tumbling the same, said devices having their lateral faces inclined toward each other inwardly of the drum, the angle between said inclined faces being appreciably greater than 50,

2. In a barking apparatus, a rotatable drum, and a plurality of tumbling devices mounted within the drum and spaced apart an appreciable distance forming pockets for catching the corners of logs for tumbling the same, the angle between the complementary faces of said devices being relievingto prevent jamming of the logs.

3. In a barking apparatus, a rotatable drum, and a plurality of tumbling d'vices mounted within the drum and spaced apart an appreciable distance forming pockets for catching the corners of logs for tumbling the same, the angle between the opposed faces of adjacent devices being appreciably greater than 45.

4:. In a barking apparatus, a rotatable drum and a plurality of tumbling devices mounted within the drum and extending in \vardly thereof, at least one lateral face of the respective tumbling devices being disposed at an angle appreciably greater than to a radius of the drum intersecting the apex of said device.

In a barking apparatus, a drum for barking logs of from two to approximately live feet in length, said drum including a plurality of spaced U-bars extending in.- wardly of the drum and each having a side face inclined to a radius of the drum intersecting the apex of the bar, the angular relation between the side face to said radius being such that the angle between the end of a log contacting with said side face and the con pleinentary face of a cooperating bar diverges toward the center of the drum.

6. In a barking apparatus, a drum for barking logs of from two to approximately five feet in length, said drum including a plurality of spaced U-bars extending inwardly of the drum and each having a side face inclined to a radius of the drum intersecting the apex of the bar, the angular re- CARSTEN ROYEM.

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