子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Method and apparatus for conveying a solid material | US09869758 | 2001-09-04 | US06769532B1 | 2004-08-03 | Arvo Jonkka |
| In a method and conveyor for conveying a solid material by means of parallel, oblong transfer elements that move back and forth in the direction of transfer, most of the surface of the transfer elements moves in the direction of transfer at the same time and at least part of the surface thereof is inclined towards the center of the conveyor. Pieces of material lying on inclined outermost transfer elements are carried on a lower longitudinal part of the transfer elements, the angle of inclination of the part about the longitudinal axis being smaller than the angle of inclination of the upper part thereof. Thus, the support force exerted by the transfer elements on the pieces lying thereon, and the friction force between them and the pieces lying thereon, increase. At the same time, the support force that is exerted by second transfer elements situated lower with respect to the outermost transfer elements on the pieces lying thereon, and the friction between the second transfer elements and the pieces lying thereon, decrease. | ||||||
| 62 | FLARED BUTT REDUCER FOR LOGS (II) | US10166027 | 2002-06-11 | US20030226617A1 | 2003-12-11 | Andre Choquette |
| A butt reducer machine is provided to remove excess wood from the swelled butt ends of logs. Cutting heads supported on pivoting arms, carried in turn within a rotating frame, are caused to oscillate circumferentially about the portion of the log to be removed. This butt-removal process may be carried out while a log is in motion longitudinally, either before or after the log enters a de-barking machine. The process may also be effected on a stationary log. | ||||||
| 63 | METHOD FOR DEFROSTING LOGS AND A DEFROSTING APPARATUS | US09898021 | 2001-07-05 | US20030010402A1 | 2003-01-16 | Arvo Jonkka |
| The present invention concerns a method and an apparatus for defrosting frozen wood prior to debarking. The defrosting method of logs of the invention is based on bringing heat zone-specifically to logs in transfer motion on a conveyor according to their heat receiving capacity immediately from the moment of starting of the defrosting, and at the end of the defrosting process, the heat volume per time unit, supplied at a higher temperature, is only a part of the heat volume of the starting phase of the defrosting process. For instance, it is possible to spray water on the wood to be defrosted so that the row interval of the showers in the initial part of the piping is a fraction of the row interval in the tail end of the piping. In the tail end of the defrosting conveyor steam can also be supplied. | ||||||
| 64 | Apparatus and method for feeding steam into the hollow longitudinal staves of a debarking drum | US833833 | 1992-02-04 | US5197524A | 1993-03-30 | Ian J. H. Clarke-Pounder; Donald B. Johnson |
| A steam distributing valve in contact with the log feed end of a rotatable debarking drum is supported in such a manner that it is capable of moving slightly parallel to the drum axis in response to axial displacement of the drum. Full contact between the valve header and the drum end is maintained for sequentially providing pressurized steam to hollow longitudinal staves on the inner circumferential surface of the drum for thawing frozen logs for debarking. | ||||||
| 65 | Compression log debarking apparatus | US457902 | 1989-12-27 | US5022446A | 1991-06-11 | Robin Wingate-Hill; Ian J. MacArthur |
| Apparatus for debarking a log using the compression debarking technique includes rollers which apply radial pressure to the log to separate the bark from the wood of the log. Pairs of rollers mounted in a bogie-like arrangement on the end of respective arms bear against the log. At each roller contact location, the log is also contacted by either a fixed roller or another pair of bogie-mounted rollers. At least two of the rollers of each set are driven by a reversible motor, to rotate the log while pressure is applied to it. The (preferably variable) angle which the planes of rotation of the rollers make with the longitudinal axis of the log ensures that the log is transported through the set of rollers as pressure is applied to the log. Cutting means, such as a knife blade on the outer surface of at least one roller, slices the bark which has been separated from the wood of the log, so that strips of bark fall from the log. The invention is especially suitable for removing thick stringy, fibrous bark from logs. | ||||||
| 66 | Combination log debarker-chipper | US312941 | 1989-02-21 | US4889169A | 1989-12-26 | Arnold N. Peterson; Larry A. Sprague |
| A combination log debarking, log chipping unit having a debarking apparatus and a chipping apparatus mounted on a common chassis, the two apparatus are aligned for conveying logs from the debarking apparatus to the chipping apparatus. The two apparatus are separated by a space of about 6-10 feet to permit loose bark to be removed from the logs and thereby avoid bark contamination of the chip. A conveyor system between the two apparatus guides and conveys logs to the chipper. A single power source enables control over the feeding of the logs to synchronize log feeding with the chipper's chipping capability. A loader over the debarking apparatus provides convenient loading of the logs into the debarker. The power source and controls for the various operating components are all under the common control of the loader operator. | ||||||
| 67 | Method and apparatus for pretreating and debarking logs | US120289 | 1987-11-12 | US4805678A | 1989-02-21 | Eugen E. Kutilin |
| An apparatus for pretreating and debarking logs wherein the log is debarked by a plurality of cutting elements disposed at an angle to the longitudinal extent of the log and offset with respect to each other. The cutting elements include top and bottom cutting elements between which the log is rolled, imparting helical slits thereto. | ||||||
| 68 | Barking drum and method of heating same | US37597 | 1987-04-13 | US4784197A | 1988-11-15 | Keijo Alander; Pekka Kokko; Tuomas Pontela |
| For supplying pressurized steam into a rotating barking drum during the barking of tree trunks in order to thaw and warm the bark, steam is supplied into the barking drum from the periphery of the drum in a substantially radial direction through a distribution ring on the periphery of the drum and a stationary member in sliding contact with the ring. | ||||||
| 69 | Method of and apparatus for debarking wood chips | US403487 | 1982-07-30 | US4616785A | 1986-10-14 | Adrian Artiano |
| Wood chips are debarked by compacting them in a mass, and agitating the compacted mass. In the compacted mass the chips are caused to rub against one another so that the bark is removed from the chips by rubbing friction of chip against chip. Frictional pressure on the removed bark finely comminutes the bark for easy separation from the debarked chips. The compacting and agitating of the chip mass is effected by a rotor device in a debarking drum chamber. | ||||||
| 70 | Delimbing apparatus | US209849 | 1980-11-24 | US4344470A | 1982-08-17 | Dennis Dubey |
| A machine for removing limbs from trees is described and includes a frame and a pair of saws supported by the frame, the saws each having a longitudinal axis, and being supported by the frame for rotation about the longitudinal axis. The saws include a blade having a cutting edge and being wrapped around the axis in a helical pattern, and the saws are supported in parallel side-by-side relation and are adapted to engage a tree with tree disposed between the saws and with the tree being generally parallel to the longitudinal axes of the saws. The saws are adapted to be rotatably driven about their axes and toward each other. The machine also includes a pair of rollers for clampingly engaging a tree, for pulling the tree in the direction of the longitudinal axes, and for rotating the tree as it is pulled. | ||||||
| 71 | Method of and apparatus for drying and debarking logs | US695933 | 1976-06-14 | US4148346A | 1979-04-10 | O. Vincent Scarnecchia |
| A method of and apparatus for removing bark from a log or cant. The cant is fed via an infeed section which eliminates limbs to a two-stage drier section in which a radial frequency generator with plate electrodes creates an electrical field in the cant to heat the moisture therein by dielectric means. In the second stage a concentrated electrical field is applied to the bark area by oval electrodes to produce a gas buildup between the cambium and the bark to cause partial separation of the bark. The drier section is followed by a three-stage debarking section, with brushes in the first stage for removing loose, large bark pieces, with crusher heads in the second stage to loosen, raise and flake the remaining bark without damaging the wood, and a final brush section for removing rough edges and create a smooth finish. | ||||||
| 72 | Process and apparatus for loosening bark from logs | US727117 | 1976-09-27 | US4085783A | 1978-04-25 | Charles A. Jones |
| The invention provides processes and apparatus for removing bark from logs. The logs are subjected to mechanically applied compression forces acting against the sides of the logs, these forces being such as to expel juices from the ends of the logs. The pressure on a log is preferably between 500 and 3,000 p.s.i. per square inch measured on the area of the diametrical plane of the log. This compression provides loosening the bark which can then be readily removed. Preferably, a stack of logs is simultaneously compressed by means of a hydraulic press, and the juices which are expelled from the ends of the log are collected for sale as a by-product. The loosened bark on the log is then removed by a mechanical frictional treatment. | ||||||
| 73 | Apparatus for debarking logs | US547373 | 1975-02-05 | US3938568A | 1976-02-17 | Wilhelm Hardtle |
| An apparatus for debarking logs has a plurality of longitudinally spaced frames each of which carries a pair of horizontally and transversely spaced upper wheels and at least one lower wheel below and between the upper wheels. At least one conveyor element is spanned over the wheels in each frame and has a pair of inner stretches defining a V in line with the inner stretches of the other frame and forming therewith a log-receiving cradle. At least one of the wheels, preferably the lower wheel is driven, and it is possible either to tip the frames so as to unload the logs or to cant them about vertical axes relative to the longitudinal direction of the logs so as to move the log along the apparatus. | ||||||
| 74 | Apparatus for breaking wood waste into short pieces | US3719314D | 1971-08-09 | US3719314A | 1973-03-06 | COX E |
| A heavy duty pivoted jaw wood breaking unit is adapted to be positioned and operated by a cable operated or hydraulically operated shovel or another form of logging machine. The apparatus breaks logging slash, tree tops, limbs and other windfalls into short sections which can be buried and scattered to substantially reduce the danger of fire. The broken material will also decompose faster than the usual large logs.
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| 75 | Climbing apparatus | US35908964 | 1964-04-13 | US3237720A | 1966-03-01 | LANDQVIST NILS D |
| 76 | Bark peeling devices | US16650662 | 1962-01-16 | US3122832A | 1964-03-03 | EDVARD DALE |
| 77 | Hold-down apparatus | US69317157 | 1957-10-29 | US2945523A | 1960-07-19 | JENKINS STARLING E |
| 78 | Loading and unloading mechanism for debarking machines | US42031254 | 1954-04-01 | US2702570A | 1955-02-22 | ROTHROCK VIRGIL H |
| 79 | Automatically adjustable feeding device for logs | US24164551 | 1951-08-13 | US2694425A | 1954-11-16 | OSKAR SKOGLUND |
| 80 | Portable log debarker for sawmills | US12051149 | 1949-10-10 | US2652867A | 1953-09-22 | BOSWELL JOHN R |
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