US1465621A - Rossing machine - Google Patents

Description

Aug.2l,1923. 1,465,621

E. BERTHIAUME ET AL ROSS ING MACHINE Filed Aug. 1. 1922- 2 Sheets-Sheet 1 avwwntoz,

E. BERTHIAUME ET AL SING MACHINE Filed Aug. 1. 1922 2 Sheets-Sheet 2 Patented Aug. 21, 1923.

U are EVARISTE BERTHIAUME AND ALVAREZ nEn'rHrAu an orsr. HY CINTHE, Q EBEC,

' CANADA, ASSIGNORS 'ro ovrnn aoUILrAnn, or MoN'rnnAL, eunenc, CANAD ROSSING MACHINE.

. Application filedAilgust 1, 1922. Serial No. 578,888.

A To all whom it maylconcern: 7

Be it known that we, EVARISTE BERTHIAUME and 'ALVAREZ BERTHIAUME, both sub ects of and useful Improvements in, Rossing vMachines, of whichthe following. is a specifi- .cation'.

Our invention relates to that class of ross ing 'or barking machines wherein two sets of wheel-like elements are employed to roll a log over and over, and at the same time 7 plain the principle involved in our improve-i :ments.

act to remove the bark from it, our improvements being particularly directed to means for making proper allowancesforthe reduction in size' of the log as it progresses through the machine, so that .it will maintain a uniform and steady rate of progression, a proper relation to the barking knives, and will be duly. discharged from the. machine, at the completion of the. barking operation, without variations or complications.

The particular type of machine to which our improvements relate is illustrated in United. States Patent No. 924,918, ofJunek 15, .1909, to Joseph Moreau and to .that' patent reference may be made for-particulars of construction other than those. which we will now explain and point out.

'Inthe drawings, Figfil is a plan view, partly in section, of a machine embodying our improvements; Fig. 2 is across sectional view,taken.ason the line 2-2'of Fig. 1, looking to the-left; and Fig. 3is a diagrammatic plan of the more important log rolling andfeeding elements of the machine,taken as though looking in the direction of the arrow in Fig. 1, and showing a log in two. ."positions during its progress through the: machine. The relative difi'erence'in'the sizes 7 'of the rolling and feeding wheels is exaggerated. in the drawings, as is also the reducr tion in size of the log, in order to make more In all of the figures similar parts -'are desi nated by sim larreference numerals.

lnthe frainel ofthemachine is mounted the driving shaft 2, which carries theknife heads 3 and 4, which normally revolve inward, toward the center of the machine, so that their knives strike downward against the log. to bebarked. While, on bearings loosely surrounding'the sl1a1' t2, aremounted I a series of log rolling wheels 5, 6, 7,8, 9 and 10, which are revolved'in a direction oppo site to thatof the cutter heads, so as toroll the log upward to meet the downward strokes of the barking knives. This reverse movement of the rolling wheels is obtained by transferring the drive from the main to feed 1t past one or .morecutters WlllCll.

shaftf2 'through a pulley 17, belt 18,and pulley 19 to a shaft 20, from which. itis 25, 25, meshing with gear wheels26, 26, each of whlch is secured to one of the rolling "wheels 5 to 10 inclusive. The shaft 20 carries a series of'bevelled pinions 217,- 27, severally meshing with bevelled pinions 28, 28, on sleeves 29, 29,

carrying . pinions 30, 30, meshing with gear teeth 31, on rolling and feeding disks 12 to carrled by a sprocket wheel 21, sprocket I chaln 22, and sprocket wheel 23 to a countervshaft 24. on which are mounted pinion gears 15, inclusive, each mounted on a pintle-32,

carried in the-head ofa post 33, which is revolvably; mounted in a vertical sleeve 34 carried by the frame of the machine. Also, connected to each post 33, is anarm 35,: on which one of the sleeves 29 is journaled, the free end of the arm having a .ball and socket connection. with a sleeve .36 on the shaft 20. Hence, longitudinal movement'of the shaft Idler disks 11 and 16'are rotatablymount ed onthe frame ofthe machine; but they .20 will change the angle of inclinationof are not necessarilyadjustable to varied. an- 1 gles of inclination to the log, it being usually sufiicient to :set normal angle.

them at .an approximately 7 It willbe seen from the'foregoing that the rolling and feedingidisks 12,13, l4. and-15 turn in the same direction assthe wheels 5 tOflO inclusive, .so. that a log lying in the angle between the disks. and wheels will be .rolled over and over by them, this operation beingassi'sted by teeth or; serrations 38 on the peripheries of the disks, and by toothed sections 39 upon the faces of the wheels 5 to 10, inclusive, such sectlons being prefer- -ably disposed at an angle corresponding to quently, if the wheels. are all of the same diameter and are set on a common axis, and the disks are all of the same diameter and are pivoted at the same distance from the wheels, the reduced end of the log, as it advances, will not find the same support or I grip from wheel 7 and disk 18 as it received from the preceding wheels and disks, be-

- cause its butt is still held by the two preced ing pairs of wheels and disks, and it cannot drop down into proper relation with the third pair so long as the first pair still grips it. This situation will recur when the log passes the second cutter head and is, progressively, still further reduced in diameter. Hence,

the log. will tend to rock and tremble, in the machine and to be unevenly acted upon by the cutters.

To remedy this, we vary the size of the wheels and disks, so as to compensate for the reduction of the diameter of the log in the rossing process.

Wheels 5 and 6. and disks 11 and 12 receive the log in its initial condition, and

hence, preferably, are all made of the same diameter.

The cutter of head 3 will reduce the diameter of the log a substantial amount, for instance, one inch; and to compensate f for this we increase the diameter of wheels 7 and 8 and disks13 and 14 one half inch each. The diameter of the log is still further reduced by the action of cutter head 4, for instance, another inch; and to compen sate for this we increase the diameter of wheels9 and 10 and disks 15 and 16 another one half inch each.

The result is that when'the reduced end of a-log approaches the next wheel and disk pair, it finds their peripheriesv close enough I together to grip and support it in its normal. line of advance, and it will be carried forward smoothly and accurately from one to another of the wheel and disk pairs, until it isejected from the'machine.

However, we find in practice that the logs are driven more strongly against the wheels than against the disks, so that the teeth of thewheels sink into the logs deeper than the teeth of the disks. This introduces 2.

certain element of lateral variation into the longitudinal movement of the logs, whlch it is desirable to overcome.

For instance,

when the forward end of the log approaches wheel 10 and disk 16 it has a tendency to be deflected towards the. wheel, and to strike the side of the wheel instead of riding over its edge. This may beovercome by setting disk 14-; in somewhat toward" the, center of i the machine so as to press'inore firmlyagainst the butt of the log, and to rock its forward end back toward disk 16, and to keep the log to a true course between wheel 10 and disk 16.

Similar variations in the positions ofother disks maybe made if that is found to be desirable in practice. Andwe wish. it to be understood that what wehave shown. and

explained relative to the principles of our improvements is to be taken. as typically illustrative of our invention, and. not as an exclusive embodiment thereof. For it. is

plain that variations might be made,by the use of equivalents and the like,without departing from'the spirit of our invention as claimed Having thus described our invention, what we claim and desire to secure by Letters Patent of the United. States j 1.. In a rossing machine, the combination, with. a rotary cutter, of a series oflo-g rolling wheels increasing in diameter, from the intake'to the ejection end. of the machine,

and a cooperating and similar series of feeding disks.

2. In a rossing machine, the combination, with a rotary cutter, of'a series of pairsof log rolling Wheels,.each pair increasing in diameter, from the intake to the ejectionend of the machine, and acooperating and'similar seriesof 10g feeding disks; k

3. In a rossing machine, the combination, with-a rotary cutter, of. a. series of pairs of log rolling wheels, each pair uniformly increasing in diameter, from. the" intake to the ejection end of the machine, and acoplpil'sating and similar series of log feeding is I fl. In a rossing machine, the comb-ins tion, with a plurality of rotary cutters, of a.

series of log rolling wheels increasing in diameter, from the intake to: the ejection end anda cooperating and simiof the machine, lar series of log feeding disks.

5.. Inv a rossing'machine, the combination, with a rotary cutter, of a series of log-rolling wheelsincreasing in diameter from the intake to the ej ectin end of the machine,

the axes of such wheels beingdisposed along a straight line, and a cooperating and si-milar series of log feeding disksa plurality of which are j ournalled along a line parallel to the axial line ofthe log rolling wheels, while one of such log feeding disks is journiall'ed nearer thanthe others to the-said axial line.

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