US1243294A - Wood-barking machine. - Google Patents

Description

.1. J. HRUSKA4 WOOD BARKING MACHINE.

APPLICATION FILED MAR. |2,19|1,

Patented Oct. 16, 1917.

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JOSEPH J'. HBUSKA, Oli MENOMINEE, MICHIGAN.

WOOD-EARRING MACHINE.

Specification of Letters Patent.' 'Patented' Get. 16, 1917.

Application led March 12, 1917. Serial No. 154,161.

To all 'whom z't may concern:

Be it known that I, JOSEPH J. HRUSKA, a citizen of the United States, and resident of' Menomin'ee, in the county of Menominee and State of Michigan, have invented certain new and useful Im rovements in Wood- Barking Machines; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to new and useful improvements in wood barking machines, particularly that type having a rotary cutter positioned to revolve about the log which isbeing barked;

One of the principal objects of the invention is to provide a barking mechanism which will entirely remove the bark from a log and leave the same substantially the same diameter throughout its length and circular in c ross section.

Another object is toV provide an improved feeding mechanism for moving the log to- Ward the cutter.

Still another object of this invention is to provide a comparatively' simply constructed .barking vmechanism which, while being very efhcient in operation, will, because of its relatively few number of parts be rather inexpensive to manufacture.

With the foregoing and many other objects and advantages in view, the invention resides more particularly in the novel combination, formation and arrangement of parts which will be hereinafter described and claimed.

In the drawings Figure -1 represents a substantially vertical longitudinal sectional view on the line 1 1 of Fig. 2.

Fig. 2 is a vertical transverse section on the plane of the line 2 2 of Fig. 1.

In the preferred embodiment of my invention as shown in the accompanying drawing wherein similar reference characters designate like parts, it will be noted that the major portion of the operating mechanism is mounted upon a suitable frame composed principally of a pair of spaced apart longitudinally extending angle metal side bars 1,

the other parts of the frame not being shown since they form no part of the present invention. The log L from which the bark B is to be removed is disposed longitudinally of the frame and is'supported above the side bars 1 thereof by any preferred holdinge mechanism (not shown) said means being used if considered necessary, to prevent the rotation of the log.

An improved feeding mechanism is employed in connection with the other parts of the invention and it may-also be used to support, or aid in supporting the lo This mechanism consists of a pair o spaced toothed rollers 2 positioned transversely of the side bars 1 and rotatably. mounted inthe free ends 'of pairs of arms 3. yOne of these rollers 2 is disposed on each side of the bark removing mechanism which will be hereinafter described, therefore one engages the portion of the log upon which the bark still remains and the other contacts with the cleaned part. vThe arms 3 are pivotally mounted on a pai-r of shafts 4 lWhich are held in suitable bearings 5 secured to and depending from the side bars 1, said shafts also having sprocket wheels 6 carried thereby. From one of the arms on each shaft 4 depends ,a short crank 7, these cranks being connected by a rod 8 so that movement of one pair of arms 3 will be duplicated by the other pair.

The lever 9 fixed in any suitable manner to one pair of arms is adapted to be used to force the rollers 2 into engagement with any size log'which is to be operated upon, the rollers being held in engagement with said log by disposing a pawl carried bythe lever in any one of a number of teeth formed on the segment 10. Each roller 2 has a sprocket or other form of gear mounted on one end around which are trained sprocket chains 11 to connect these sprockets with the sprockets 6, an additional sprocket chain 12 uniting the sprockets on the two shaft 4. Actuation of one of the sprockets or one of the shafts 4 is carried out in any suitable manner, the same being connected to any desired source of ower. 1n this man-ner both of the rollers w1ll be simultaneously rotated so that the log L will be moved longitudinally' of the'frame whenever said rollers.

have been engaged therewith as a result of the adjustment of the lever 9.

The cutting blades 13 ofthe bark removing mechanism are diametrically opposed and adjustably held in sockets 14 formed on one edge of a ring-like member or annulus 15 which is adapted to surround the log L and. is of sufficient diameter to receive logs of any ordinary size. The member 15 is preferably made large enough to surround any log which is liable to be encountered.,`

u A"15 and bearing balls 21, form means for I i' The edge of themember opposite that upon which the sockets 14 are formed is' provided with a gear ring 16, the teeth of which mesh With a spur gear 17 fixed on a main drive shaft 18. Thus when the gear 17 is rotated, the member 15 will be revolved about the log, and the cutting blades 13 which have been adjusted with respect to the surface thereof will remove the bark.A

The member 15 is held for rotation with-l in an annular stationarysupport 19 having feet 20 projecting. from 'its opposite sides and secured to the side bars 1, said support having a pair of ball races which, together with similar racescarried by the member permitting easy rotation of the revolving parts. The support 19 also has a depending bearing 22 in which one end of the shaft 18 is rotatably mounted. The cutting vblades 13- consist of bars having their inner endsl sharpened, one edge of each having ratchet teeth 23' with which pivoted dogs 24 engage,

springs 25 normally holding said dogs in engagement with the teeth. It will be seen from Fig. 1 that the formation of the ratchet teeth 23 issuch that the cutting blades will be prevented from moving outwardly so long as the dogs are in operative position, and that inward movement of the blades will be prevented by reason of a contracting 'coil spring 26 whose opposite ends are connected respectively with pins 27 project- 4o'4v drawing, but briefly described is as follows:

ing from the blades 13 and ears 28 carried by the sockets 14n. This construction permits the blades to be readily adjusted with respect to any size log after the same has lbeen centered Vin the annular member 15.

The operation ofthis machine should be readily understood from the accompanying After the log L has been positioned so that its center line is substantially in the center shaft 18and of the annular member 15, the lever 9 isl moved in the proper direction to force the teeth of the rollers 2 into contact with said log, said rollers being locked in this Aposi-v all of these adjustments have been made."

the operation of themachine is be n b starting the gu y mechanism which vrotates the the rollers 2,it being necessaryto simultaneously feed the log toward the rapidly rotating member 15 so that the blades thereof will continuously remove the bark B. This Vmovement of the several parts of the device and the log lcontinues until all of the bark has been removed therefrom. In some instances it may be necessary to provide more than one pair of diametrically opposed cutting blades, in which case, they would be disposed-at different points around the periphery of the member 15.

From this description it' will be obvious that a very simply constructed wood barking machine has been produced and one which very quickly and thoroughly removes the4 bark from any size log regardless of the thickness of the bark or the kind of tree which is being operated upon. Various minor changes may be made in the form and proportion of the various parts of the device without departing from or sacrificing any of the principles of the invention as set forth herein. l

What is claimed isz- 1. Adevice ofthe class described comprising an annular member to receive an elongated piece of work material, a socket carried by the member, a blade in said socket, said blade having ratchet teeth in one edge, a pawl carried by the member for engagement with said teeth to hold the blade against movementin any direction, a spring connected by its opposite ends with the blade and socket to hold the former in the latter,

and means for rotating vthe member around the work material.

2. In a machine ofthe class described, a

frame including a pair of spaced side bars,

a stationary annular support having a pair of spaced feet secured to the side bars, a ring-like member rotatablyl mountedl in said annular support and extended beyondl the Y sides of the same, an annular external series of gear teeth on the member a/.jacent one end, a cutting blade on the otherend of the member, a bearing depending yfrom the annular support between the side bars, an operating shaft journaled in the bearing, and a pinion on the shaft and meshing with said series of gear teeth. l j v 'In testimony that I claim thel foregoing `I have hereunto set my hand at Menominee,

in the county ofv Menominee and State of Michigan, in the presence of two witnesses.

Witnesses:

'JOHN WIzNnR, INA W. NYLAND.

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