US1986707A - Decorticating device for timber - Google Patents

Description

J l, 1935. A. BEZNER I DECQRTICATING DEVICE FOR TIMBER 2 Sfieets-Sheet 1 Filed Nov. 26, 1932 Jan. 1, 1935. 4 A. BEZNER ,70

DECORTICATING DEVICE FOR TIMBER Filed Nov 26, 19:52 2 Sheets-Sheet 2 Jn ventor Patented 1, 1 935 I 1 1,986,707 DECORTICATlNG DEVICE FOR TIMBER Albert Bezner, Ravensburg, Germany Application November 26, 1932, Serial No. 644,535 In Germany November 23, 1929 "UNITED STATES PATENT- OFFICE 5 Claims. (01. 144-298) This invention relates to a device for shaving the body member 17 firmly positioned on the and trimming logs, timber, tree trunks, masts, and shaft 20 guided in the two bearings 19 and driven, the like, and particularly to decorticating or rossfor example, by the pulley 21. and of the sheet 1 ing machines of the type described in my cometal band 18 helicallyattached to the member a pending application Ser. No. 497,549, filed Novem- 17. In Fig. 6, two steel bands 18 are wound in 5 her 22.1930, now Patent #1,921,904 issued August double thread on the body 17, but it is also pos- 8, 1933,"and of which this application is in part sible to provide one or several steel bands in one a continuation and in which. the timber to be or multiple threads. The circumference of the decorticated is turned during the barking process body member 17 is correspondingly shaped to reby means of rotatable tappet wheels and, byplacceive and secure the helical steel bands 18 and 10 ing the tappet wheels in an angular position, provided with fastening surfaces therefor, the simultaneously moved forward relative to the bands 18 being preferably exchangeably secured barking tool, so that the timber can be shaved by to the body by means of screws. At its outer being turned only once. I 1 border the steel band 18 is made into a cutting According to the invention, the tappet wheels edge. The band 18 helically wound around the 15 on which the'timber to be, shaved is positioned body member 1'7 may be made also from sheet aredisposed on their shafts so that they maybe iron having a cutting edge of high-grade steel swung about their axes and thus adjusted tothe welded to it. As shown particularly in Fig. 6,

. varying diameters of the timber to be treated. the helical cutter is disposed at an angleof less -20 For this purpose, the tappet wheel axles are prothan 90 relative to the longitudinal axis, of the 20 vided with spherical bearing units on which the body member. tappet wheels consisting of one or several parts The cutter shaft 201s carried by the light metal and being hollow and spherical inside are guided casing 22 which can be rotated, but not longioscillatorily and controlled by an adjusting memtudinally displaced, on the swingable arm steel 25 her. Therefore, the tappzt wheels can carry out tube 23. To the casing 22 or the tube 23, on 25 any swinging motion relativeto the shaftwhile either side of the cutting roll, individually adthe positionof the latter remains unaltered. justable and exchangeable feelers or guards 24 By way of example, one embodiment of the inare'attached, as shown in Fig. 6, which extend vention is illustrated in the accompanying drawunder the casing 22 'and engage the surface of the '80 ings, in which Figure 1 is a side view of a decortimast or log to regulate the cutting action of the eating machine according to the invention; Fig. 2, cutter roll and its penetration into the log or a a top viewth'ereof; Fig. 3, a front view of the timber 1.

tappet wheel frame, partly broken away; Figs. 4' Shavings are conveniently drawn off through and 5 are, respectively, a cross and longitudinal the casing 22 and the swingable arm steel tube section of one of the tappet wheels; and Fig. 6 is 23. In the double swingable arm arrangement 85 a longitudinal section of the decorticating tool shown, the two swingable arm tubes 23 are conhaving the formof a helical cutter. V nected by a curved or U-shaped terminal mem- Referring to the drawings, the mast, log, or timber 27 (Figs. 1 and 2) with a joint suction disher 1 to be shaved rests on the two driven tappet charge 28.

49 wheels 2 which are mounted swivelably and turn The tappet wheel frame or bracket 31 is also 40 the log or mast 1 during the barking process and provided with a suction discharging device 30 move it forward in axial direction when turned for shavings and the like, the bracket 31 having around their axes in the same way out of a vertifor this purpose below the wheels 2 a hollow cal plane. The mast or log 1 is worked by the space 29, as shown in Figs. 1 and 3, of a form helical cutter 4 rotatably disposed on the free end causing the dropping shavings or the like to 45 of the tubular swingable arms 22, 23 and driven, accumulate at one point whence they can be for instance, by the belt 3. In Fig. 2, two tubular drawn off by t P pe or tube 30. 7 arms 22, 23 are shown which are pivotally sus- The tappet wheels 2 are oscillatorily or swivelpended from the frame 33 so as to swing about ably disposed on their shafts of rotation 6 to the shaft 5 which extends parallel to the longiimpart to the-timber to be treated forward mo- 50 tudinal' axis of the mast 1,- each of the two arms tion in longitudinal direction in addition to rocarrying atits free end ahelical cutter 4. Swingtary motion. For this purpose there are, for ing supporting structures having onearm or more example, spherical units '1 keyed on to the shafts than two may be employed also. i 6 which may be driven by a sprocket 32 or in any 5 2 As Fig. 6 shows, the helical cutter 4 consists of other suitable manner, as indicated in Figs. 3

the grooves 10 of the 2 can be which can be rotated in the purpose adjustable by a as indicated in Figs. 1 ing common spindle I claimz- 1. Feed mechanism common hand wheel 25, and 2, and correspondsaid wheel.

2. Feed mechanism i'ordebarking machines comprising a pair of wheels adapted to impart rotary motion and'i'orward motion in a longitudinal direction to the timber being debarked,

said wheel consisting of two interconnected parts and a one-piece dentated rim surrounding said parts, a spherical bearing member on each shaft provided with a peripheral groove, a sliding member in each of said grooves joined to a corresponding one of said wheels for orientably Journaling each said wheel on a corresponding said spherical bearing member, and a U-shaped adlusting member for each wheel through which the lateral sides of said rim slide, said adjusting member being adapted and mounted to orient said wheel about an axis perpendicularito the axis of said wheeL' 3. Feed mechanism comprising a pair of for debarking machines wheels adapted to impart rotary motion and forward motion in a longitudinal direction to the timber being debarked, a

memo? .Smnding one of naling each said. spherical bearing X11182 to the axle of and transmission members.

said wheels for orientably Joursupporting shaft for each lwheel disposed parto'ithe longitudinal wheel a'corresponding said member; ,a U-shaped adiustsaid wheel. u Feedmechanism for ,debarking machines comprising a pair of wheels adapted to impart rotary motion and forward motion in a longitudi- -nal direction to the timber being debarked, a

on a corresponding her, a U -shaped adjusting member for each wheel and through which the outer edgerof said wheel moves, a pin carrying each said adjusting memsponding said wheel.

- ALBERT BEZNER.

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