US871296A - Bark-peeling machine. - Google Patents

Description

PATENTED NOV. 19 J. J. RUSSELL 6r. A. J. BAYLEY.

BARK PBELING MACHINE.

APPLICATION FILED FEB. 2a. 1907.

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J. J. RUSSELL & A. J. BAYLEY.

BARK PEBLING MACHINE.

APPLIGATION FILED 1113.28. 1907.

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APPLIOATION FILED FEB. 28. 1907.

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J. J. RUSSELL & A. J. BAYLEY.

BARK FEELING MACHINE.

APPLoATIoN FILED 113.28. 1907.

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JAMES J. RUSSELL AND ARTHUR J. BAYLEY, OF MILWAUKEE, WISCONSIN.

BARK-PEELING MACHINE.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed February 28,1907. Serial 110.359.937.

To all whom it may concern.'

Be it known that we, JAMES J. RUSSELL and ARTHUR J. BAYLEY, both of Milwaukee,

`Milwaukee county, Visconsin, have invented certain new and useful Improvements in Bark-Peeling Machines; and we hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

The subject of this invention is a machine for peeling or stripping bark from logs, andi particularly designed for removing bark from logs preparatory to their being cut into veneer strips.

The machine embodying the invention can be arranged adjacent a veneer cutting machine so that it can operate upon the 'log after the latter is placed in the veneer machine but before the. veneer cutting operation begins thus the veneer machine -can be used for rotating the log during the bark removing' operation, and after the bark has beenstripped ofl' the log can be cut into veneer without removing' it from the veneer machine.

The barking machine is adapted to be located adjacent to the veneer machine, or log holding and rotating device, and can be readily moved out of the Way while the log .is being placed in the veneer machine or on the log supports, and then can be moved up thereto to strip the log of bark.

, While the invention is particularly designed for use in connection .with veneer used for stripping suitably supported and rotated during the barking operation. The particular means for supporting and rotating the logs however forms no part of the present invention.

The novel barking machine comprises a main frame which can be moved or swung to and from the veneer machine or log supporting device. Upon this main frame is mounted an adjusting or sliding frame which can be shifted transversely of the main frame so as to move the series of scraping .knives directly to or from the log. Upon this sliding frame is mounted a swiveled frame carrying the Scrapers and capable of horizontal oscillation on the slidingframe so as to permit the scrapers to automatically adjust themselves to the taper and longitudinal irregularities of the l log. Upon this swiveled frame is mounted a series of tiltable and adjustable Scrapers which can be simultaneously advanced and held against the log by means of a tilting frame; each scraper however being capable of a limited amount of independent motion sufIcient to enable it to-follow closely the circumference of that portion of the log against which it acts, and to automatically adjust itself to any circumferential irregularities of the log. By this means the Scrapers are yieldingly held to their work and the bark will be entirely peeled from the logl in a rapid and effective manner.

The accompanying drawings illustrate a practical form of the machine embodying the invention and we will now describe the same with reference thereto; the essential features and combinations of parts for which protection is desired being set forth in the claims.

In said drawings Figure 1 is a top plan view partly in section of the complete machine. Fig. 2 is a front elevation partly broken away, of the machine. Fig. 3 is an enlarged transverse vertical section on line 3 3, Fig. l. Fig. 4 is a detail View of the pivoted end of the machine. Figs. 5 and 6 are detail sectional views of the locking device for the base frame. Figs. 7 and 8 are detail perspective views respectively of one of the scraper sup orting arms and of one of the scraper head2. Figs. 9, 10 and 11 are respectively perspective views of the tilting frame, the oscillating frame, and the sliding frame.

The main frame 1 is provided at its ends with eyes l, by which 1t can be pivoted at either end, as desired, on a stud 1C fastened to the floor or foundation upon which the machine is supported. As shown frame 1 is pivoted at the left-hand end at 1C, and its right-hand end is provided with rollers 1 which support it upon a curved track 1d which may be bolted to the foundation, so that the main frame 1, with the parts mounted thereon, can be swung to and from the veneer machine, or other mechanism (not shown) by which the log L (Fig. 3) to be barked is supported. The inward movement of the machine toward the log is limited by a stop 1, and the main frame can be locked in its forward working position by means of a dog 2, (see Figs. 3, 5, 6,) pivoted to an arm 2a on a short shaft 2b, journaled between eyes 1 on the rear Side and one end of the main frame as shown, Said shaft carrying an operating lever 2. The dog 2 is adapted to engage notches 2e in a plate 2f, bolted to the foundation, as shown g and the dog 2 and arm2a are so proportioned that when the dog engages a notch 2e and lever 2O 5 is pulled back until the flat heel 2g of dog 2 rests upon plate 2f, then the axis of the pivot bolt 2h connecting pawl 2 to arm 2, passes below a line (indicated at :c Fig. 6)- drawn between the point of dog 2 and the 10 axis of shaft 2b, thus locking the main frame securely in working position. When lever 2C is thrown forward, pivot bolt 2h is raised until a lugf 2m on arm 2a strikes a lug 2n on dog 2, then the latter is raised clear of plate 2f, as shown in Fig 5.

The frame 1 is provided at its ends with transverse guideways 1g for the ends of an adjustable sliding frame 3, which is mounted upon frame l, and capable of movement transversely thereof, but is confined thereon by plates l bolted to the ends of frame 1 as shown. rl`he sliding frame 3 maybe adjusted by any suitable means, but as shown it is provided with a central transverse rack 3a on its under side, which rack is engaged by a pinion 4 on a shaft 4a journaled in framel and extending longitudinally thereof, and having on its outer end ajnotched disk 4b which is adapted to be locked to a dog 4C on a lever 4d pivoted on shaft 4a, beside disk 4b, said lever being guided by a bar le attached to frame l, and provided with stop lugs 4f, 4g, to limit the throw of lever 4d. When lever 4d is at stop if and dog 4C is engaged with one of the notches in disk 4b, the sliding frame 3 is locked in working position. To move the frame forward lever ld is moved forward to upper stop 4g, then dog 4C is withdrawn from disk 4b and lever 4d is then moved back to stop 4f, and dog 40 engaged with another slot in disk 4b, and the operation repeated until the sliding frame is in the desired position. By this means the frame 3 can be adjusted back and forth'upon the frame l.A

Mounted upon frame 3 is an oscillating` or swiveled frame 5, which has a central pivot pin 5a, engaging a central socket 3b in frame 3, so that while frame 5 is held upon frame 3 it can oscillate longitudinally thereon. Frame 5 is held down upon frame 3 by means of end bearers 5b on frame 5, which underlie rollers 3d mounted on studs 30 rising from the ends of frame 3, as shown. T he frame 5 is provided with bearings at its ends for a shaft 5C upon which is mounted a series of. substantially upright scraper carrying arms 6, each arm carrying a scraper-head 7. Each scraper head 7 is slotted to embrace the upper part of its supporting arm 6, and is pivoted on such arm as at 7EL and the scraper head projects both in front of and behind the arm. To the rear end. of each scraper-head 7 is pivotally connected one end of a bolt 7b by means of a pin 71 passing through an eye on the end of the bolt, while the threaded shank of lthe bolt extends through an eye 6a on the upper end of the scraper arm 6; said bolt being provided "with nuts 7C and 7d at each side of the eye 6a by 70 which the inclination of the scraper-head -relative to its arm 6 can be positively regulated. Each scraper-head carries a scraping knife 7e secured in a slot in the front end of the scraper-head by a set screw 7f. The 75 scraper arms 6 are loosely mounted on shaft 5C but are yieldingly held in substantially upright position by means of rods 6b pivot- A aly connected as at 6p to the rear sides of arm 6, below the scraper-heads, and extend- S0 ing through openings 8a in the upper end of aY tilting frame 8, springs Sb being strung on said rods 6b between the frame 8 and the arms 6 and normally forcing the arms 6 and tilting frame 8 apart; the extent of separa- 85 tion Abetween said arms and frame being regu lated by nuts 6C on the rear ends of rods 6h. The tilting frame S is provided with. end and intermediate wing-portions 8b and S0, by which it is supported upon the shaft 5C, as 90 shownrso that the frame- S is tiltable with the Scrapers upon the oscillating frame 5. The tilting frame is connected at its rear side to the short arm 9a of a lever Q fulcrumed on a pin 9b pivoted between ears 5'3 on swivel 95 frame 5, in rear of pivot 5*". Preferably the connection between the tilting frame and. lever 9 is a spring link; as shown most clearly in Fig. 3, which link is composed of upper and lower plates 9C, 9d, an interposed 100 stout helical spring 9e and bolts Qf, bywhich the plates QC, 9d, are adjustably connected together; the spring 9e is a very stout spring and normally keeps the link distended; plate QC is pivotally connected to a lug 8h on '105 the tilting frame S and plate 9d is pivotally connected to the short arm 9 of lever 9. Nhen the frame has been moved into operative position, the operator by depressing lever 9 can throw the tilting frame 8 and the 110 connected series of scraper arms 6 toward. the log andhold the scraper-heads 7 against the log with a yield ing pressure until the log has been denuded of the bark. The machine may be provided with standards 1G by which 115 it can more readily be swung to and from operative position.

Operation. The machine being arranged adjacent the veneer machine or log supporting device, is held in operative position by the pivot at one end and the locking device at the opposite end. After the log is in position in the veneer machinev or other supporting and rotating device, the barking machine is adjusted to working position and the base frame locked; the operator then moves the Scrapers toward the log by adjusting the sliding frame 3; the oscillating frame 5 turning on its pivot so that the row of Scrapers will practically assume a position parallel withy able and should there the opposed surface of the log; which may be irregular or not parallelwith the axis of the log; this irregularity may be due to unequal. diameters or taper of the log, or to unequalcentering thereof. vlt is prelerable to have the log at such a height that the Scrapers operate in a plane slightly below the aXis or surface ol the log' as in such position the Scrapers have an endangering' tendency to eut into the wood. The log' should then be'rotated in a direction away from the scrapers',-.-that is the Side ol` a log next the Scrapers should move upwardly and then away from the Scrapers. The operator then depresses lever 9 which throws the u pper end of the tilting frame toward the log and moves the Scrapers into contact therewith; an i the operator should keep the lever depressed until the bark iS remover. The Scrapers will thus be Set up against the log with more or less powerful spring' pressure each scraper head'beingindividually pressed against the log by its spring' so that the scraperpoints are forced into the bark'and strip the same from the log.` Each scraper' arm and scraper is individually spring-controlled and adjustbe any hollows in or projections upon the opposed surface ol: the ogs, the scraper-heads will automatically adjust `themselves to such irregularities irrespective of the action of the adjacent scrapers. The'pins 7p by which the scraper heads are'connected to bolts 7b are preferably ol' wood, so that if a scraper-head should catch on a knot or in a hollow in a log, the pin would break and prevent injury to the Scraper head or arm.

While themachine is Shown as pivoted at one end we do not limit ourselves to this Inode oli arranging the main trame, although it is a practical and convenient arrangement when the machine is used in connection with a veneercutting machine.

I t will be observed that each scraper-head is adjustable and yieldable, independently of the others, upon and in relation to the tilting` frame 5, and oscillating lframe 3; also that the whole series of Scrapers are yieldable with thel tilting trame, and are held against the log with a pressure dependent upon the vpower exerted upon the lever Q, the pressure being cushioned by the Spring 9e. Furthermore while in operation the whole series of Scrapers is rendered self-adjusting longitudinally of the log b v the fact that the frame 5 iS capable of oscillation on frame 3. By reason ol these several adjustments, and compensating' mountings ol" the Scrapers they will act effectively upon the log and thoroughly strip the bark therefrom.

The main frame 1 as stated is adapted to be pivoted at either end, and therefore may be formed with eyes 1FL and ears l", and bearings for rollers 1x at each end, and sliding i l l lhold the frame 3 can be arranged to be operated from the pivoted end ot lrame l, by arranging shalt 1t and placing lever 4 ailjacent the pivoted end ol the main trame.

Having described our invention what we claim as new and desire to secure by Letters Patent is:

l. In combination, an adjustable frame, a series ol" arms pivotally mounted on said frame, scrajner-heads adjustably connected to said arms, a tilting frame, and springs interposed between Said `frame and the said arms; with a lever and a spring-link connecting said lever to said tilting Vframe for 'arising the tilting frame to hold the arms and scrapers in operative position.

2. ln combination, an oscillating frame, a series of arms pivoted thereon, Scrapers adjustably mounted on said arms, a tilting iframe pivoted beside the arms and springs interposed between the tilting Ylrame and said arms; with a rocking lever, and a spring connection between said lever and the tilting' frame lor causing said iframe to yieldingly press the Scrapers against the log'.

3. ln combination, a sliding frame, an oscillating l'rame pivoted thereon, a series ol scraper arms pivoted on the oscillating frame, Scrapers mounted on said arms, a tilting frame, rods connecting the arms to said tilting `lirame, Springs interposed between the arms and tilting lrame, and means whereby the tilting Scrapers in operative positions.

4. In combination, a Sliding' `frame, an oscillating iframe pivoted thereon, a series olE scraper arms pivoted on the oscillating' frame, scraper-heads adjustably mounted on the Said arms, a tilting' ilramc pivoted on the oscillating frame, rods connecting the arms to said frame, and springs interposed between the arms -and lrame; with a rocking lever, and a `Spring-link connecting' said lever to the tilting frame whereby the tilting frame may be caused to moveI and hold the Scrapers in operative positions.

5. In a bark-peeling' machine, the combination ol' an adjustable main frame, a transversely movable sliding frame thereon, an oscillating frame on said sliding irame, a tilting frame on said oscillating frame, a series ol arms pivoted on the oscillating i'ra'me, scraper heads on said arms, spring' connections between the tilting 'Frame and the Scraper arms, a lever For actuating the tilting' lframe, and a spring conmectionbetween said lever and the tilting lramc.

6. The conibination of a main frame, a locking' device thereilor comprising' a rock- Shaft, an operating' lever thereon, an arin connected to said shaft, a dog pivoted to said arm, said dog having a lug on its heel adapted to eng'agc a lugI on the arm as the latter is raised, and a ratchet adjacent the `frame and adapted to be cng'agcd by Said dog.

frame may be caused to move and posed between and means for causing the tilting ously moving the arms to and 7. A bark peeling machine comprising a l series of pivotally mounted individually yieldable arms, scraper-heads adjustably l mounted on said arms, a spring engaging l each arm, and a lever and spring connections 1 for yieldingly holding the series otscrapers l arms in operative position.

8. A bark peeling machine comprising a Jframe, a series of arms pivotally mounted on said frame, a scraper head connected to each arm, a tilting frame, a spring interposed be tween said frame and each of the said arms, frame to yielding hold the arms and scrapers in operative position, and means for simultanea thereof, an oscillating frame on said sliding Jframe, a series o-scraper carrying arms pivotally mounted on the oscillating frame, adjustable scraper-heads on said arms, and a ever and spring connection Jfor moving the scraper-arms.

11. In a bark peeling machine, the combination of a pivoted scraper arm, a scraperhead pivoted on said arm, a bolt adjustably connected to the said arm and to said head, and a break-pin connecting said head to said bolt, and means for moving the arm to and l Jfrom the work.

In testimony that we claim the Jforegoing as our own, we aHiX our signatures in presence of two witnesses.

JAMES J. RUSSELL. ARTHUR J. BAYLEY.

Rus-

from the work.

9. A bark peeling machine comprising an oscillating frame, a series of individually movable varms pivoted thereon a series of Scrapers mounted on said arms, a tilting l Witnesses as to signature of James J. frame pivoted beside the arms, springs interl, sell: the tilting frame and the sev- 1, eral arms, and means for moving all the l scrapers to and Jfrom the log. l

10. In a bark peeling machine, the combination of an adjustable main Jframe, a sliding frame thereon and movable transversely MAYME A. BECK, MAZIE LLOYD.

Bayley:

JosrE SHENNERS, CHAs. L. Bonsa.

Witnesses fas to signature of Arthur J.

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