US3700116A - Dosing device for use in log handling installations - Google Patents

Dosing device for use in log handling installations Download PDF

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US3700116A
US3700116A US874256A US3700116DA US3700116A US 3700116 A US3700116 A US 3700116A US 874256 A US874256 A US 874256A US 3700116D A US3700116D A US 3700116DA US 3700116 A US3700116 A US 3700116A
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lifter
logs
threshold
lifters
log
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US874256A
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Ilkka Arimo Rysti
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/02—Devices for feeding articles or materials to conveyors
    • B65G47/04—Devices for feeding articles or materials to conveyors for feeding articles
    • B65G47/12—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles
    • B65G47/14—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles arranging or orientating the articles by mechanical or pneumatic means during feeding
    • B65G47/1492—Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles arranging or orientating the articles by mechanical or pneumatic means during feeding the articles being fed from a feeding conveyor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles
    • B65G2201/0282—Wooden articles, e.g. logs, trunks or planks

Definitions

  • One of the lifters of each pair is of larger size than the other lifter of the same pair and has a threshold against which the logs are fed.
  • the lower surface of the other lifter is also shaped to form a threshold. When the other lifter is turned to its lifting position its threshold is closer to the arriving logs than the threshold of the first lifter.
  • the primary object of the present invention was accordingly to eliminate the said drawback and to accomplish a dosing device which operates satisfactorily also in the event that logs or batches of logs varying greatly in respect of their diameter are supplied to it. Another object was to achieve a simple and inexpensive design and, furthermore, that reliable operation of the device might also be ensured under freezing conditions.
  • a dosing device is mainly characterized in that it comprises a threshold against which the logs which are to be dosed are fed, and pairs of lifters, which lift the log that is in turn to be transported over the said threshold to the next phase of treatment, one of the two lifters in each pair presenting larger dimension in the direction in which the logs arrive than the other.
  • FIG. 1 shows in elevational view from its end, a log handling installation in which a dosing device according to the invention has been fitted
  • FIGS. 2 and 3 show in elevational and enlarged view, the dosing device in the log handling installation according to FIG. 1, and
  • FIGS. 4 and 5 show, likewise in elevational view and schematically, two other embodiment examples of dosing devices which may be used in accordance with the invention.
  • the log handling installation includes three consecutive conveyors, by means of which the bundle of logs deposited on the leftmost conveyor is dispersed so that the logs no longer are one upon the other on the third conveyor 6. From this conveyor the logs enter the dosing device, which feeds them one by one onto the inclined plane 8, from which they roll onto a longitudinal conveyor 11, which transports the logs in their longitudinal direction to the next phase of treatment.
  • the dosing device comprises tumable pairs of lifters l and 2 in a number greater than one. The lifters are caused to turn by means of power cylinders 3 and 4.
  • Each pair of lifters of which pairs it is thus understood that there must be at least two in the dosing device in practice, comprises two tumable lifters 1 and 2.
  • the lifter 2 is turned by the power cylinder 4 and the lifter I by the power cylinder 3.
  • the logs 6 roll along the inclined plane 7 in the direction of the arrow 5 to the dosing device. If the log which arrives at the closing device at a given moment is small or of medium size as regards its diameter, the initial position of the dosage operation corresponds to that shown in FIG. 2, in which the lifter 2, which has been made, e.g., of sheet metal, has been turned with the aid of the power cylinder 4 in clockwise direction into its extreme position.
  • the forward edge of the lifter 2 now constitutes the threshold over which the log 6 which has been deposited on support of the lifter 1 has to be raised.
  • This raising is accomplished with the aid of the power cylinder 3, whereby the lifter 1 turns and the log which rests on it slides along the front edge of the lifter 2, to arrive on the inclined upper edge of the lifter 2 and thence further onto the inclined plane 8 and onto the conveyor 11 (cf. FIG. I
  • the initial position of dosage is that shown in FIG. 3.
  • the lifter 2 is now in the other extreme position, whereby the log 6 resting on support of the lifter I does not contact the lifter 2 at all.
  • the shape of the lifter l is such that a threshold is formed, against which the log rests.
  • the turnable lifters l and 2 have been replaced with two lifters 9 and 10, which are able to move between two extreme positions in the manner of pistons. If, as in FIG. 4, a log 6 of large diameter is concerned, it can be handled by pushing both lifters into their upper position, which has been indicated with dotted lines, whereby the log will be raised onto the inclined plane in the same manner as has been described before and will hence continue to the conveyor 11.
  • the dosing operation is accomplished with the aid of the lifter l0 alone, in which instance then the lifter 9 remains in its lower position throughout the dosing operation.
  • the lifter 10 is left in its raised position (indicated with dotted lines) and the lifting is accomplished with the aid of the lifter 9, along the left side of the lifter 10.
  • turnable lifters I2 and 13 have been used, which turn about the same axis between two extreme positions, one of these positions having been indicated with solid lines and the other with dotted lines in FIG. 5.
  • Large logs are handled by turning either the lifter 12 with larger dimensions alone or this lifter together with the smaller lifter 13.
  • Logs of small diameter are handled by turning the lifter l3 alone, and those of medium size are handled by first turning the lifter 13 into its upper extreme position,
  • the invention is by no means narrowly confined to the design examples shown in the drawing.
  • the diameter of the lifter 13 may be increased in relation to that of lifter l2, and likewise in a device according to H0. 4 the lifters 9 and 10 may exchange their places, whereby at the same time the mode of operation of these devices becomes somewhat different from what has been described in the foregoing.
  • the movement of the lifters may also be accomplished by means of many different mechanisms, and their movement can be controlled either manually or with the aid of automatic arrangements based on the use of various kinds of feelers.
  • a dosing device for use in log handling installations which carries out the dosage of logs which have been brought to it in a transverse position and which are then conveyed one by one to the next handling phase, said device comprising a threshold against which the logs which are to be dosed are fed, and pairs of lifters for raising a log over said threshold and moving it to the next handling phase, one of the two lifters of each pair of lifters having a greater dimension in the direction in which the logs arrive than the other lifter of the pair, the two lifters of each pair being tumable through a predetermined section, the lifter of each pair which has the greater dimension comprising said threshold, the lifter of each pair which has the smaller dimension having a lower surface shaped to also constitute said threshold, whereby when the last-mentioned lifter is turned into its lifting position its threshold is located closer to the direction in which the logs arrive than the threshold of the lifter having the greater dimension.

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  • Mechanical Engineering (AREA)
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Abstract

A log handling installation has a device for dosing transversely extending logs which are moved one by one. The device includes pairs of lifters for raising the logs. One of the lifters of each pair is of larger size than the other lifter of the same pair and has a threshold against which the logs are fed. The lower surface of the other lifter is also shaped to form a threshold. When the other lifter is turned to its lifting position its threshold is closer to the arriving logs than the threshold of the first lifter.

Description

United States Patent Rysti 51 Oct. 24, 1972 [54] DOSING DEVICE FOR USE IN LOG HANDLING INSTALLATIONS [72] Inventor: Ilkka Arlrno Rysti, Frisanssintie 22,
Frisans, Finland [22] Filed: Nov. 5, 1969 [2]] Appl. No.: 874,256
[52] US. Cl. ..2l4/l PB [51] Int. Cl ..B65g 11/00 [58] Field of Search ..2l4/l P, 1 P2, l PC, DIG. 3
[56] References Cited UNITED STATES PATENTS 2,880,844 4/1959 Vogeli ..2l4/l PZ X 3,204,749 9/1965 Richmond ..2l4/l PZ X FOREIGN PATENTS OR APPLICATIONS 692.593 8/1964 Canada ..2l4/lPZ 195,491 4/1965 Sweden ..2l4/l PZ Primary Examiner-Gerald M. Forlenza Assistant Examiner-Frank E. Werner AtrorneyRichards & Geier ABSTRACT A log handling installation has a device for dosing transversely extending logs which are moved one by one. The device includes pairs of lifters for raising the logs. One of the lifters of each pair is of larger size than the other lifter of the same pair and has a threshold against which the logs are fed. The lower surface of the other lifter is also shaped to form a threshold. When the other lifter is turned to its lifting position its threshold is closer to the arriving logs than the threshold of the first lifter.
2Claims, 5 Drawing figures P'A'TENTEMMM I912 3.700.116
SHEEI 3 OF 3 INVENTOR: I, A. [235M A FT'OILNGUS DOSING DEVICE FOR USE IN LOG HANDLING INSTALLATIONS The present invention concerns a dosing device for use in log handling installations which accomplishes dosage of logs that have been brought to it in transversal position so that they are conveyed to the next treatment phase one at a time. In this subsequent treatment phase the logs are most usually deposited on a further conveyor, which transports the logs singly in their longitudinal direction to some subsequent handling process.
In present practice several different designs of dosing devices suitable for the use outlined above are known. The most notable drawback of such designs belonging to previous art has been that with their aid only dosage of such batches of logs can be accomplished in which the log diameters vary within reasonable limits. When to such devices log batches are fed in which the diameters of the individual logs display really considerable differences. it often happens that the dosing device feeds forward more then one log at once or that it may in fact fail to transport a log which is excessive of its diameter, considering the overall dimensioning of the dosing device.
The primary object of the present invention was accordingly to eliminate the said drawback and to accomplish a dosing device which operates satisfactorily also in the event that logs or batches of logs varying greatly in respect of their diameter are supplied to it. Another object was to achieve a simple and inexpensive design and, furthermore, that reliable operation of the device might also be ensured under freezing conditions.
A dosing device according to the invention is mainly characterized in that it comprises a threshold against which the logs which are to be dosed are fed, and pairs of lifters, which lift the log that is in turn to be transported over the said threshold to the next phase of treatment, one of the two lifters in each pair presenting larger dimension in the direction in which the logs arrive than the other.
The invention is described in greater detail in the following with reference to the attached schematic drawing, in which some embodiment examples of dosing devices according to the invention have been presented.
In the drawing,
FIG. 1 shows in elevational view from its end, a log handling installation in which a dosing device according to the invention has been fitted,
FIGS. 2 and 3 show in elevational and enlarged view, the dosing device in the log handling installation according to FIG. 1, and
FIGS. 4 and 5 show, likewise in elevational view and schematically, two other embodiment examples of dosing devices which may be used in accordance with the invention.
Referring to FIG. 1, the log handling installation includes three consecutive conveyors, by means of which the bundle of logs deposited on the leftmost conveyor is dispersed so that the logs no longer are one upon the other on the third conveyor 6. From this conveyor the logs enter the dosing device, which feeds them one by one onto the inclined plane 8, from which they roll onto a longitudinal conveyor 11, which transports the logs in their longitudinal direction to the next phase of treatment. The dosing device comprises tumable pairs of lifters l and 2 in a number greater than one. The lifters are caused to turn by means of power cylinders 3 and 4.
The operation of the dosing device is better understood with reference to FIGS. 2 and 3. Each pair of lifters, of which pairs it is thus understood that there must be at least two in the dosing device in practice, comprises two tumable lifters 1 and 2. The lifter 2 is turned by the power cylinder 4 and the lifter I by the power cylinder 3. The logs 6 roll along the inclined plane 7 in the direction of the arrow 5 to the dosing device. If the log which arrives at the closing device at a given moment is small or of medium size as regards its diameter, the initial position of the dosage operation corresponds to that shown in FIG. 2, in which the lifter 2, which has been made, e.g., of sheet metal, has been turned with the aid of the power cylinder 4 in clockwise direction into its extreme position. The forward edge of the lifter 2 now constitutes the threshold over which the log 6 which has been deposited on support of the lifter 1 has to be raised. This raising is accomplished with the aid of the power cylinder 3, whereby the lifter 1 turns and the log which rests on it slides along the front edge of the lifter 2, to arrive on the inclined upper edge of the lifter 2 and thence further onto the inclined plane 8 and onto the conveyor 11 (cf. FIG. I
When a log of large diameter is proffered to the dosing device, the initial position of dosage is that shown in FIG. 3. The lifter 2 is now in the other extreme position, whereby the log 6 resting on support of the lifter I does not contact the lifter 2 at all. The shape of the lifter l is such that a threshold is formed, against which the log rests. When, from the position shown in FIG. 3, the lifter l is turned clockwise with the aid of the power cylinder 3, the log finally arrives on the inclined plane 8 and thence to the conveyor 11.
In the design according to FIG. 4, the turnable lifters l and 2 have been replaced with two lifters 9 and 10, which are able to move between two extreme positions in the manner of pistons. If, as in FIG. 4, a log 6 of large diameter is concerned, it can be handled by pushing both lifters into their upper position, which has been indicated with dotted lines, whereby the log will be raised onto the inclined plane in the same manner as has been described before and will hence continue to the conveyor 11. When the log is of medium size, e.g., of the order of which the log shown leftmost in FIG. 4 is a representative, the dosing operation is accomplished with the aid of the lifter l0 alone, in which instance then the lifter 9 remains in its lower position throughout the dosing operation. If the dosing device receives a very slender log (not shown in the drawing), the lifter 10 is left in its raised position (indicated with dotted lines) and the lifting is accomplished with the aid of the lifter 9, along the left side of the lifter 10.
In the design according to FIG. 5, turnable lifters I2 and 13 have been used, which turn about the same axis between two extreme positions, one of these positions having been indicated with solid lines and the other with dotted lines in FIG. 5. Large logs are handled by turning either the lifter 12 with larger dimensions alone or this lifter together with the smaller lifter 13. Logs of small diameter are handled by turning the lifter l3 alone, and those of medium size are handled by first turning the lifter 13 into its upper extreme position,
whereafter the lifting over the threshold is accomplished by means of the lifter 12.
It is to be understood that the invention is by no means narrowly confined to the design examples shown in the drawing. For instance, in a device according to FIG. 5 the diameter of the lifter 13 may be increased in relation to that of lifter l2, and likewise in a device according to H0. 4 the lifters 9 and 10 may exchange their places, whereby at the same time the mode of operation of these devices becomes somewhat different from what has been described in the foregoing. The movement of the lifters may also be accomplished by means of many different mechanisms, and their movement can be controlled either manually or with the aid of automatic arrangements based on the use of various kinds of feelers.
lclaim l. A dosing device for use in log handling installations which carries out the dosage of logs which have been brought to it in a transverse position and which are then conveyed one by one to the next handling phase, said device comprising a threshold against which the logs which are to be dosed are fed, and pairs of lifters for raising a log over said threshold and moving it to the next handling phase, one of the two lifters of each pair of lifters having a greater dimension in the direction in which the logs arrive than the other lifter of the pair, the two lifters of each pair being tumable through a predetermined section, the lifter of each pair which has the greater dimension comprising said threshold, the lifter of each pair which has the smaller dimension having a lower surface shaped to also constitute said threshold, whereby when the last-mentioned lifter is turned into its lifting position its threshold is located closer to the direction in which the logs arrive than the threshold of the lifter having the greater dimension.
2. Dosing device according to claim 1, in which the turning centers of the tumable lifters lie on one and the same straight line.

Claims (2)

1. A dosing device for use in log handling installations which carries out the dosage of logs which have been brought to it in a transverse position and which are then conveyed one by one to the next handling phase, said device comprising a threshold against which the logs which are to be dosed are fed, and pairs of lifters for raising a log over said threshold and moving it to the next handling phase, one of the two lifters of each pair of lifters having a greater dimension in the direction in which the logs arrive than the other lifter of the pair, the two lifters of each pair being turnable through a predetermined section, the lifter of each pair which has the greater dimension comprising said threshold, the lifter of each pair which has the smaller dimension having a lower surface shaped to also constitute said threshold, whereby when the last-mentioned lifter is turned into its lifting position its threshold is located closer to the direction in which the logs arrive than the threshold of the lifter having the greater dimension.
2. Dosing device according to claim 1, in which the turning centers of the turnable lifters lie on one and the same straight line.
US874256A 1969-11-05 1969-11-05 Dosing device for use in log handling installations Expired - Lifetime US3700116A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054210A (en) * 1975-09-29 1977-10-18 Crocker Roger A Apparatus for transporting and handling pipe
US4245735A (en) * 1979-02-13 1981-01-20 Valo Antti T Device for portioning logs or similar objects
US4431367A (en) * 1982-07-19 1984-02-14 Brunette Machine Works, Ltd. Log-separating lateral transfer apparatus
US4560314A (en) * 1982-12-09 1985-12-24 Voest-Alpine Aktiengesellschaft Magazine arrangement for measuring and/or sampling probes
US4702403A (en) * 1984-05-02 1987-10-27 Harris Press & Shear, Inc. Rail breaker
US5119930A (en) * 1991-07-15 1992-06-09 Stelter Clifford R Quadrant log feeder
US6637581B2 (en) * 2001-04-30 2003-10-28 George A. Goater Vertical log singulator with profiled surface
US6761261B2 (en) 1999-04-27 2004-07-13 Maxi-Tour Inc. Article transfer device
US9415424B2 (en) 2012-03-08 2016-08-16 Reikalevy Oy Apparatus and system of a sorter and method for sorting wood pieces

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1185504A (en) * 1984-02-14 1985-04-16 Bryant C. Hollins Single log feeder
CA1302952C (en) * 1987-10-30 1992-06-09 Bryant C. Hollins Single log feeder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880844A (en) * 1956-10-19 1959-04-07 Salem Brosius Inc Mechanism for handling elongated articles
CA692593A (en) * 1964-08-18 Nienstedt Heinz Device for individually separating lumber
US3204749A (en) * 1962-04-27 1965-09-07 Davy & United Eng Co Ltd Selecting method and apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA692593A (en) * 1964-08-18 Nienstedt Heinz Device for individually separating lumber
US2880844A (en) * 1956-10-19 1959-04-07 Salem Brosius Inc Mechanism for handling elongated articles
US3204749A (en) * 1962-04-27 1965-09-07 Davy & United Eng Co Ltd Selecting method and apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054210A (en) * 1975-09-29 1977-10-18 Crocker Roger A Apparatus for transporting and handling pipe
US4245735A (en) * 1979-02-13 1981-01-20 Valo Antti T Device for portioning logs or similar objects
US4431367A (en) * 1982-07-19 1984-02-14 Brunette Machine Works, Ltd. Log-separating lateral transfer apparatus
US4560314A (en) * 1982-12-09 1985-12-24 Voest-Alpine Aktiengesellschaft Magazine arrangement for measuring and/or sampling probes
US4702403A (en) * 1984-05-02 1987-10-27 Harris Press & Shear, Inc. Rail breaker
US5119930A (en) * 1991-07-15 1992-06-09 Stelter Clifford R Quadrant log feeder
US6761261B2 (en) 1999-04-27 2004-07-13 Maxi-Tour Inc. Article transfer device
US6637581B2 (en) * 2001-04-30 2003-10-28 George A. Goater Vertical log singulator with profiled surface
US9415424B2 (en) 2012-03-08 2016-08-16 Reikalevy Oy Apparatus and system of a sorter and method for sorting wood pieces

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