US987828A

US987828A - Apparatus for debarking logs.

Info

Publication number: US987828A
Application number: US48717209A
Authority: US
Inventors: Garret Schenck Jr
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-04-01
Filing date: 1909-04-01
Publication date: 1911-03-28
Anticipated expiration: 1928-03-28

Description

G. SCHENGK, J11. APPARATUS FOR DEBARKING LOGS.

APPLICATION FILED APR. 1, 1909.

9,28 Patented Mar.28,1911.

2 SHEETS-SHEET 1.

G. SOHENOK, JR. APPARATUS FOR DEBARKING LOGS.

APPLICATION FILED 'APR. 1, 1909.

Patented Mar. 28, 1911.

2 SHEETSSHBET 2.

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APPARATUS FOR DEIBARKING LOGS.

ceases.

Specification of Letters Patent.

Patented Mar. as, real.

Application filed April 1, 190's. Serial in. 487,172.

To all whom it may concern:

Be it known that I, GARRET SoHnNoK, J r.,

.a citizen of the United States, and resident of Millinocket, in the county of Penobscot and State of Maine, have invented. certain new and useful Improvements in Apparatus for Debarking Logs, of which the following is a specification.

My invention relates to debarking or rossing machines, and consists of means whereby to effectually feed the logs past the rossing head while rotatin the same, and in features of construction 0 the parts of the apparatus together with means for discharging the logs automatically after rossing, all as fully set forth hereinafter and as illustrated in the accompanying drawing, in which:

Figure 1 is a side elevation of a debarking machine embodying my improvement; Fig. 2 is a plan view; Fig. 3 is a plan showin one form of rosser head; Fig. 4 a longitudlnal section of the body of the rosser-head; Fig. 5 an enlarged detached view illustrating one mode of constructing the teeth of the rosser head; Fig. 6 shows a different form of tooth; and Fig. 7 a view illustrating a modification.

The frame A of the apparatus is constructed in any suitable manner to support the necessary parts of the ap aratus and has bearings for a series of shaft parallel to each other but which are at an angle more or less acute to the side bars of the frame and to the axis of the rossing head hereinafter referred to. Each shaft is provided with a feed roll B and the feed rolls adjacent to the rossing head, that is, those which both precede and succeed the latter, have flanges 3 at the ends adjacent the ross-' ing head, which flanges are preferably flaring or cone-like, as shown, and while the rolls and their flanges may be plain or merely serrated they are preferably provided with lugs or projections 4, which will enable them to take strong hold of the logs which are placed upon them to be fed longitudinally of the frame past the rossing head.

Owing to the inclination of the rolls the logs carried thereby tend not only to travel longitudinally but also to move laterally toward the flanged ends of the rolls and the contact of these flan es with the sides of the logs so acts u on t e latter that they are s 2, which are moved longitudinall but rotatively, whereby all portions of t e logs are subjected to the rossing action, and this result is insured by providing the projecting lugs upon the feed rolls as before set forth. Those feed rolls which are beyond the rolls which must act upon the 10 to rotate the same are not provided with anges but are inclined in the same manner as the first rolls, and in order that the logs may remain upon'the latter rolls until they have passed wholly from the flanged rolls, I provide any suitable character of guard or guards which will hold them 1n place and which may be shifted to ermit the rolls to be discharged laterally.

his shifting of the guards may be effected automatically through the medium of a contact device J supported by the frame and in position to be struck by the forward end of the log when the latter has traveled sufliciently to be discharged, said contact device being connected with the guards to shift the same. As shown the guards consist of blades D pivoted to one of the side frames of the apparatus and each connected by a link 6 with a bar 7 which is attached at its forward end to the contact device J so that when the latter is swung, by the contact of a log in the direction of its arrow all of the guards will be carried downward and away from the side of the log which will then roll ofl the feed rolls to an suitable receptacle. A spring 5, after the 0g passes from the contact device J, restores the latter and the guards to normal position.

The shafts of the feed rolls may be 'driven in any suitable manner, but as shown are provided with beveled gears for engaging corresponding gears on a driving shaft 8.

The rossing head maybe constructed in different ways, but as shown there are two heads C upon a single shaft carried by a swinging frame K pivoted at one side of the frame so as to swing to and from the latter to carry the rossing heads to and from the path of the logs, and at the center of the shaft is a belt pulley or cylinder 10 adapted to receive a driving belt by which the rossing head or heads may be rotated. As shown each rossing head has a cylinder with teeth 12 projecting beyond the periphery thereof and so supported that they will yield with a spring action on striking the bark, the result being that a tooth upon first striking the bark is carried in a reverse direction from the rotation of the head, but upon the bark yielding the tooth will spring forward and act percussively on other portions of the bark with a much more effective result than if the tooth was stationary. The teeth may be supported to secure such a. spring action in various ways, but as shown the body of the rossing head is a slotted cylinder through the slots of which the teeth may extend and each of which consists of a spring metal, as for instance round spring wire, which is supported by being coiled around a long tudinal bar 13 extending through the cylinder, or is otherwise so held that the projectrn r toothed end of the strip is maintained wlti a spring pressure against one end of one of the slots. A simple and ell'ective means of securing this result is to extend the other end of the stri also through one of the slots, or the same slot. and bend it down against the face of the cylinder. as best shown in Fig. 5. The rods 13 may be solid or hollow and extend through hearings in the heads 14 of the cylinder and are held in place by nuts at the end, or otherwise, as may be most desirable. The rossing head instead of being carried by a swinging frame K may be carried by a sliding frame, and any suitable means may be en'iployed for carrying the frame to and from the path of the logs to be operated upon.

W'hile T have shown the feed rolls as provided with flanges or heads 3 forming part. of the rolls this is not an absolutely necessary construction as the heads or flanges may be independent of the cylindrical portions of the rolls and may be independently driven, as for instance, as illustrated in Fig. 7 where the cylindrical portion of the roll is secured to the shaft. 2, and the head 01' flange 3 turns upon the said shaft and is provided with a gear 22 which may be driven from a suitable spur Wheel. In Fig. 6 I have illustrated a somewhat different form of spring tooth Where the projecting end is bent back and serrated so as to act with a rasping effeet.

The operation of the machine hereinbefore described briefly stated is as follows 2- The logs from which it is desired to remove bark are placed upon the feed rolls at the right. hand end of the machine, and owing to the inclination of the roll supporting shafts and the arrangement of the teeth on such rolls the log will be fed both longitudinally and toward the side of the machine adjacent which the rossing head is mounted. While all of the rolls B are thus adapted to feed a log both longitudinally and laterally, the rolls immediately adjacent the rossing head are additionally provided with means, such as the toothed flanges 3, by which the log engaged thereby is not only moved longitudinal y and laterally as aforesaid, but. in addition is rotated so that e'very portion of the surface thereof is presented to the rossing head. After passing the rossing head the log is given no further rotary movement and the lateral movement thereof is checked by the upright guards until the longitudinal movement of the log brings it into engagement With the contact device J and causes the latter to move outwardly, thus lowering the guards D and ermitting the rolls B to feed the log laterally over the side of the machine.

Without limiting myself to the construction shown, I claim:

1. In a debarking machine, the combination with a stationary frame, of a series of rotatable cylindrical parallel toothed rolls, each roll having a flaring toothed flange, the said rolls being arranged and adapted to feed a log both longitudinally of the frame and laterally against said flanges, and said flanges being adapted to rotate the log about its axis, of a rossing device mounted adjacent to the flanged ends of said rolls and adapted to debark the logs as they are transported and turned bythe rolls.

2. The combination in a debarking machine, of a series of feed rolls adapted to simultaneously feed a log longitudinally and laterally, a rossing head adjacent one end of a plurality of said rolls, the latter being constructed to rotate a log engaged thereby while feeding it as described, guards for limiting the lateral movement imparted to a log by the feed rolls at one side-of'the rossing head, and means for automatically shifting said guards to permit a log to be discharged from the machine after passing the rossing head.

3. The combination in a debarking machine, of a suitable frame, a rossin head at one side of the frame, a series of: eed rolls adapted to feed a log longitudinally and laterally toward the side of the frame adjacent the rossing head, means for limiting the lateral movement of a log after passin the rossing head, and means for automatlcally moving said limiting means to inoperative position.

4. The combination in a debarking machine, of a suitable frame, a rossin head at one side of the frame, a series of cod rolls adapted to feed a log longitudinally and laterally toward the side of the frame adjacent the rossing head, means for limiting the lat-.

eral movement of a log after passing the rossing head, and means adapted to be actuated by the longitudinal movement of a log for moving said limiting means to inoperative position.

5. The combination in a debarkin machine of a frame carrying a series 0 feed rolls inclined as set forth, a portion of said rolls having end flanges, a rossing head arranged adjacent to the flanged rolls, guards arranged adjacent to the rolls without flanges and acting to limit the lateral movebe automatically discharged from the ma chine.

6. The combination in a debarking machine of a frame carrying a series of feed rolls inclined as set forth, a portion of said rolls having end flanges, a rossing head arranged adjacent to the flanged rolls, uards arranged adjacent to the rolls without flanges, to limit lateral movement of a log in the di rection of the rossing head, and a contact device adapted to be engaged by the logs for shifting said guards out of position when a log passes beyond the flanged rolls to permit the logs to be automatically discharged.

7. The combination with the log support of a debarking apparatus, of a rotatable rossing head provided with spring teeth that are supported within and project laterally through slots in the head as set forth.

8. The within described rossing head having a hollow slotted cylinder, and yieldingly supported teeth extending through said slots.

9. A rossing head having a cylindrical body with slots therein, teeth projecting through said slots, and means for carrying each tooth with a spring pressure to one end of the slot through which it projects.

10. The combination in a rossing head of a slotted cylinder, a series of bars supported within the cylinder, and spring teeth each consisting of a strip of resilient metal coiled slots.

about one' of the bars and projecting through one of the slots. r

11. The combination in a rossing head of a slotted cylinder, a series of bars'supported within the cylinder, and spring teeth each consisting of a strip of resilient metal coiled about one of the bars and projecting at both ends through one.of the slots, one of the ends projecting outward beyond the other. 8 12. The combination in a rossing head of a slotted cylinder, heads provided with bear ings for a series of parallel rods, and teeth,

each consisting of a strip of spring metal coiled about one of the bars and having a curved end projecting through one of the 13. The combination in a rossing head of a slotted cylinder, heads provided with bearings for a series of parallel rods, and teeth each consisting of a strip of spring metal coiled about one' of the bars and having a curved end projecting through one of the slots, the other end also projecting through the slot and bent to engage the end of the said slot.

' 14. The combination with the rosser head of a spring'tooth provided with teeth as set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

GARRET SOHENCK, J R. Witnesses:

CATHARINE L. SoImNcK, FLORENCE L. SNARE.