CA1146111A - Lumber sorter accumulator - Google Patents
Lumber sorter accumulatorInfo
- Publication number
- CA1146111A CA1146111A CA000350055A CA350055A CA1146111A CA 1146111 A CA1146111 A CA 1146111A CA 000350055 A CA000350055 A CA 000350055A CA 350055 A CA350055 A CA 350055A CA 1146111 A CA1146111 A CA 1146111A
- Authority
- CA
- Canada
- Prior art keywords
- supporting arms
- timber
- compartment
- arms
- pairs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/04—Sorting according to size
- B07C5/12—Sorting according to size characterised by the application to particular articles, not otherwise provided for
- B07C5/14—Sorting timber or logs, e.g. tree trunks, beams, planks or the like
Abstract
ABSTRACT OF THE DISCLOSURE
There is provided a method and apparatus whereby pieces of timber are sorted into lots on supporting arms which are suspended by flexible and extensible members. As the tim-ber is added, the arms are lowered and finally extend down to a conveyor apparatus. The arms then open to discharge the timber onto the conveyor apparatus and are then drawn up, are closed and reach the start position where a new lot of timber is received.
There is provided a method and apparatus whereby pieces of timber are sorted into lots on supporting arms which are suspended by flexible and extensible members. As the tim-ber is added, the arms are lowered and finally extend down to a conveyor apparatus. The arms then open to discharge the timber onto the conveyor apparatus and are then drawn up, are closed and reach the start position where a new lot of timber is received.
Description
BACKGROUND OF THE INVENTION
Field of the Invention .
The present invention relates to sorting compartments and to a procedure for the use of such compartments for sort-ing timber. In this procedure, a sorting compartment is fil-led with timber pieces, after which it is opened and the tim-ber lot that has accumulated into it is allowed to discharge on the take-up equipment, with which the timber lot is then removed to be further processed. ~fter discharging, the com-partment is closed for the reception of the next timber lot.
Description of the Prior Art _ In timber sorting installations, various diffexent compartment sections with compartments into which timber is directed according to its size and type are known. For in stance, such installations are known wherein a compartlnent bottom comprises a trap door hinged at its one edge t while the other end of the compartment is suspended by flexible ?
supporters for opening and closing the compartment by raising and lowering these flexible supporters. For this kind of com-partment system, we refer to the applicant's Finnish Patent No. 44352 issued August 1967.
As it has been noticed that, due to the high dropping altitude, timber may break in sorting compartments described above, wherefor elevator- or lift-type compartments have been taken into use, as in these, the timber lot is cautiously lowered on the take-up level, which may for instance, be a car-riage or a conveyor, with which the timber lot is then removed to be further .
'' : - 1 - ~, processed. Such sorting compartment systems have recen-tly been developed in which the compartments are ba~s composed oE flexi-ble supporters, said bags being expanded as timher accumulates into the bag. Examples of bag compartments of this type are described in the applicant's U.S. Patent No. 3,776,379, Swedish Patents Nos. 367,931 and 405,815 issued ~une 1974 and March 1977, respectively, and U.S. Patent No. 3,776,379. However, in -these well-known compartment construGtions, there have been such draw-backs that they have not come into general use. As an example of these drawbacks, one can mention complica-ted and expensive structures, that also have an unfavorable effect on the relia-bility of operation. Another drawback is that as, in equipment known so far, the drive mechanisms of the flexible supporters wind up only one end of the supporter, and rewinding that must take place after the compartment has been emptied is too slow for modern highly efficient sorting equipment. As the flexible supporters are lengthened when filling up the compart.ment and as the compartment is opened only at its one edge, timber pieces at the edge areas of the bag come into a rotating movement that breaks sharp edges of timber pieces thus lowering their quality.
Further, there is the additional drawback that special trigger-ing mechanisms are required for cpening and closing the flexible - supporters.
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We have concieved and contribute by the present inven-tion compartments of the class described b~ which we are able to sort timher in a manner to avoid the drawbacks mentioned above and to provide a simple and eConomical method and compartment ~ construction.
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According to one aspect of the present invention there is provided a method for the use of timber sortin~ compartments, in which method a sorting compartment is filled with timber pieces a~ter which the sortin~ comparmtent ls opened and the accumulated timber lot is allowed to discharge onto take-up equipment, by means of whi~ch the timber ~ot is then carried on to be further
Field of the Invention .
The present invention relates to sorting compartments and to a procedure for the use of such compartments for sort-ing timber. In this procedure, a sorting compartment is fil-led with timber pieces, after which it is opened and the tim-ber lot that has accumulated into it is allowed to discharge on the take-up equipment, with which the timber lot is then removed to be further processed. ~fter discharging, the com-partment is closed for the reception of the next timber lot.
Description of the Prior Art _ In timber sorting installations, various diffexent compartment sections with compartments into which timber is directed according to its size and type are known. For in stance, such installations are known wherein a compartlnent bottom comprises a trap door hinged at its one edge t while the other end of the compartment is suspended by flexible ?
supporters for opening and closing the compartment by raising and lowering these flexible supporters. For this kind of com-partment system, we refer to the applicant's Finnish Patent No. 44352 issued August 1967.
As it has been noticed that, due to the high dropping altitude, timber may break in sorting compartments described above, wherefor elevator- or lift-type compartments have been taken into use, as in these, the timber lot is cautiously lowered on the take-up level, which may for instance, be a car-riage or a conveyor, with which the timber lot is then removed to be further .
'' : - 1 - ~, processed. Such sorting compartment systems have recen-tly been developed in which the compartments are ba~s composed oE flexi-ble supporters, said bags being expanded as timher accumulates into the bag. Examples of bag compartments of this type are described in the applicant's U.S. Patent No. 3,776,379, Swedish Patents Nos. 367,931 and 405,815 issued ~une 1974 and March 1977, respectively, and U.S. Patent No. 3,776,379. However, in -these well-known compartment construGtions, there have been such draw-backs that they have not come into general use. As an example of these drawbacks, one can mention complica-ted and expensive structures, that also have an unfavorable effect on the relia-bility of operation. Another drawback is that as, in equipment known so far, the drive mechanisms of the flexible supporters wind up only one end of the supporter, and rewinding that must take place after the compartment has been emptied is too slow for modern highly efficient sorting equipment. As the flexible supporters are lengthened when filling up the compart.ment and as the compartment is opened only at its one edge, timber pieces at the edge areas of the bag come into a rotating movement that breaks sharp edges of timber pieces thus lowering their quality.
Further, there is the additional drawback that special trigger-ing mechanisms are required for cpening and closing the flexible - supporters.
:
We have concieved and contribute by the present inven-tion compartments of the class described b~ which we are able to sort timher in a manner to avoid the drawbacks mentioned above and to provide a simple and eConomical method and compartment ~ construction.
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According to one aspect of the present invention there is provided a method for the use of timber sortin~ compartments, in which method a sorting compartment is filled with timber pieces a~ter which the sortin~ comparmtent ls opened and the accumulated timber lot is allowed to discharge onto take-up equipment, by means of whi~ch the timber ~ot is then carried on to be further
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processed, after which the compartment is closed to be readv to receive the next timber lot; wherein the me-thod comprises the steps o~; accu~ulatin~ the timber lot upon rigid sup-portlng arms suspended and extended by pairs of flexible sus-pending means, these means being located on both sides of theaccumulated timber lo-t; lengthening the pairs of flexible sus-pending means, then opening or allowing the supporting arms to open; lifting the supporting arms independently and by sep-arate paths to a top position by shortening the pairs oE flex-ible suspending means; locking the supporting arms to form aclosed bottom of the compartment for receiving pieces of the next timber lot, and repeating the phases for the next timber lot.
~ccording to a further aspect of the present invention there is provided a sorting compartment of a timber sorting installation, comprising: flexible supporter means, connected at the top ends thereof with winding equipment, rigid sup-porting arms fastened to lower ends of said supporters, lock-ing means connected to ad~acent ends of said supporting arms, a take-up conveyor, means positioned beneath the level of the take-up conveyor for unlocking said locking means, and guide means at the top of the compartment for guiding said supporting arms so that said supporting arms are locked bv said locking means in a position in which they form the closed bottom of a compartment when the supportinq arms are in their top position.
According to a still further aspect of the present inven-tion there is provided a sorting compartment of a timber sort-ing installation, comprising: flexible supporter means, con-nected at the top ends thereof with winding equipment, rigidsupporting arms, fastened to lower ends of said.supporters, lockiny means connected -to ad~acent ends of said supporting arms, a take-up conveyor, means positioned beneath the level of the take-up conveyor for unlocking said locking means, and guide means at the top of the compartment for gulding said supporting arms so that said supporting arms are locked ~- 2a ~
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by said locking means in a position in which they form the closed bottom of a compartment when the supporting arms are in their top position; and flanges at the inner ends of re-spective supporting arms and corresponding flanges associated with the outer ends of said supporting arms in an oblique position relative to the longitudinal direction of the suppor-ting arms, so that the supporting arms are locked, pair by pair, to form an acute angle, seen in profile.
Thus, the principal characteristic features of the inven~
tion are:
That the timber lot is formed on rigid supporting arms suspended by pairs of flexible suspending organs;
: 20 :::
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~ 3 that by lenghtening the hanging part of thesuspending organ pairs, the supporting arms are lowered under the level of the take-up device;
that the locking of said supporting arms is opened or allowed to open;
that the supporting arms are lifted to the top position by shortening the hanging part oE the suspending organ pairs;
that the supporting arms are locked to form a closed bottom of the compartment for receiving pieces of the next timber lot, for which the procedure ph~ses defined above will be repeated.
The principal characteristic features of a timber sorting compartment in which the inventive procedure is allied are:
That to the lower end, at a suitable polnt, of said flexible suppor~ers there are fastened rigid supporting '' arms with appropriate locking equipment;
that underneath the level of the take-up conveyor there are suitable organs for opening said locking equip-ment, and that,in thP top part of the compartment there are particular guiding organs for guiding the supporting arms so to lock them in the position where they form the-closed bottom of the compartment when in the top position.
There has thus heen outlined rather broadly the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may he better appreciated. There are, of course, additional features of the invention that will be described more fully hereinafter. Those skilled in the art will appreciate that the conception on which this disclosure is based may readily be utiliÆed as the basis of the designing of other methods and structures for carrying out the pur-poses of this invention. It is important, therefore, that ~ .
~ -- 4 this disclosure be regarded as including such equivalent constructions as do not depart from the spirit and scope of the invention.
Brief Description of the Drawings Several embodiments of the invention have been chosen for purposes of illustration and description, and are shown in the accompanying drawings forming a part of the specification, wherein;
Fig. 1 shows the compartment section of a timber sorting installation, in which compartment section the inventive procedure is applied~ wi~h different compartments shown in different phases of operation;
Fig. 2 is a plan view o a compartment section shown in Fig~ l; and Fig. 3 ~hows the bottom of a compartment in five different phases o~ operation and in a larger scale.
Descxiption of the Preferred Embodiments As shown in Figs. 1 and 2, timber pieces a, b ~ are, with hooks 22 o~ top conveyor 20, brought to a sort-ing compartment assembly that comprises several successive sorting compartments, into which timber pieces fall from hooks 22 according to controlled impulses. The dropping is carried out with dropping equipment 21, known as such, with for instance, stopper arms that come to the front of timber piece b as conveyor 20 moves in the direc tion of arrow E, whereat~itimber piece b falls (arrow B) into the sorting compartment.
Below the sorting compartments there is a lower take-up conveyor 15 that takes timber lots T to be further processed, for instance to ribbing and packing apparatusO
Instead of bottom conveyor 15, timber carriàges can also be used.
¦ The frame structure of the sorting compartments comprise vertical beams 31 supported on foundation 30 and -' :
connected with each other by horizontal beams 32 to which traverses 33 are fastened.
The bottoms o the compartments comprise twin supporting arms 12a and 12b which are ~astened at their outer ends to flexible suspender or supporter steel ropes, straps or similar items lOa, lOb. At their top ends, the flexible supporter pairs axe guided to winder equipment 17, driven by motors 18 via chains 29.
Supporters pairs lOa, lOb o~ each sorting compartment, of which there are, side by side, two or more pairs, for instance three, ~s in Fig. 2, are connected with driving motor 18 by means of ~ 28, said motor 18 being controlled by an automatic system, known as such, to start according to a certain automatic program as the timber compar~ment is full. This state of fullness can ~e indicated for instance with photocell equlpment, also known as such.
The construction and f~mctioll of a compartment device in accordance with the invention will now be de-scribed. In Fig. 1, the left-side compartment is empty and ready to receive on its closed bo~tom timber pieces coming from top conveyor 20, said bottom comprising arm pairs 12a"', 12b"', interlocked by means of locking device 140 As timber pieces are introduced into the compartment~ the bottom is moved downwardly as motor }8 : :
lets supporters lOa, lOb move downwardly in the direction of arrow C.
In Fig~ 1j timber lot T3 has accumulated into the compartment second from the left, and supporters lOa lOb, with the completed timber lot, is lowered in the direction of arrow C so as to place timber lot T3 on the bottom conveyor 15. This phase of operation is illustrated with the next compartment, in which timber lot T2 has been placed on the bottom conveyor 15, and as supporters lOa' and lOb' have further been lowered, the rigid support-ing arms 12a, 12b turn from their acute-angled (angle a) :: :
, position so that said angle ~ opens and the interlocking of the ends of arms 12a' and 12b' is released. For this purpose, on fo~undation 30 there are protruding parts 16 that effect ~ opening of the interlocking upon contact by releasing flan~e 35b at the end of supporting arm 12b' from behind the locking spur of locking arm 14'. After this~ the flexible supporters move to positions indicated in Fig. 1 with supporters lOa"' and lOb "' on both sides of timber lot T2, after which supporting arms 12a" and 12b" arer con-trolled by the automatic system, wound up in the direction of arrow D as shown in right-hand compartment of Fig. l; the timber lot T1, after being discharged from this compartment, is no more supported by compartmen~ sections 12 and 10/ and is ready to be removed, in the direction of arrow A, further on to packing and ribbing apparatus, for instance.
Another advantage of the invention is that, immediately after the i~terlocking between the ends o~
arms 12a' and 12b' has been released, it is possible to start, by means of lower conveyor lS, moving the,timber lot T2 ~orwardl be~ore it is necessary to lift arms 12al and 12b' upwardly. Arms 12a' and l~b' can, of course, be lifted to the top position past timber lot T2 before starting to move lot T2 by means of the bottom conveyor 15.
As supporting arms 12a" and 12b" move from the position of Fig. 1 upwardly, flanges 25 of their top ends become guided by oblique surfaces 23 to -the position shown in Fig. 3I, wherein flanges 25 have come underneath the overhead ledge 27 (Fig. 1). As sup-porters lOa~ lOb are tightened even more, the apparatus reaches the position shown in Fig. 3II, in which locking arm 14 is guided behind ~lange 35b at the end of arm 12b, which has already taken place in Fig. 3III, in which locking arm 14 "' has extended behind flange .
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35b"', and spur 36 of 1ange 35a"' has become positioned under the protrusion of flange 35b'". Now the compart-ment bottom, formed by rigid arms 12a "' and 12b "', is in the top position ready to take up the next timber lot.
In Fig. 3IV, supporters lOa and lOb start to loosen and arms 12a and 12b start to move downwardly and the lower part of flange 35b of arm 12~ is locked behind the locking spur of locking arm 14, in which position arm 14 is held in position by spring 19, which turns locking arm 14 around its pivot 37 to the locking position. In Fig. 3II, spring 19 lets arm 14 turn so ` , as to permit the locking to take place.
In the i~lustration of Fig. 3IV, arms 12a and 12b are coated with rubber or some other corresponding material 38 for reducing harmful impact forces when timber pieces fall on arms 12a, 12b.
We believe that the construction of our novel sorting compartment and its method of use will be understood that the advantages thereof will be fully ap-preciated by those persons skilled in the art.
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processed, after which the compartment is closed to be readv to receive the next timber lot; wherein the me-thod comprises the steps o~; accu~ulatin~ the timber lot upon rigid sup-portlng arms suspended and extended by pairs of flexible sus-pending means, these means being located on both sides of theaccumulated timber lo-t; lengthening the pairs of flexible sus-pending means, then opening or allowing the supporting arms to open; lifting the supporting arms independently and by sep-arate paths to a top position by shortening the pairs oE flex-ible suspending means; locking the supporting arms to form aclosed bottom of the compartment for receiving pieces of the next timber lot, and repeating the phases for the next timber lot.
~ccording to a further aspect of the present invention there is provided a sorting compartment of a timber sorting installation, comprising: flexible supporter means, connected at the top ends thereof with winding equipment, rigid sup-porting arms fastened to lower ends of said supporters, lock-ing means connected to ad~acent ends of said supporting arms, a take-up conveyor, means positioned beneath the level of the take-up conveyor for unlocking said locking means, and guide means at the top of the compartment for guiding said supporting arms so that said supporting arms are locked bv said locking means in a position in which they form the closed bottom of a compartment when the supportinq arms are in their top position.
According to a still further aspect of the present inven-tion there is provided a sorting compartment of a timber sort-ing installation, comprising: flexible supporter means, con-nected at the top ends thereof with winding equipment, rigidsupporting arms, fastened to lower ends of said.supporters, lockiny means connected -to ad~acent ends of said supporting arms, a take-up conveyor, means positioned beneath the level of the take-up conveyor for unlocking said locking means, and guide means at the top of the compartment for gulding said supporting arms so that said supporting arms are locked ~- 2a ~
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:. : ` ' ' ' ' " . ' ,. ': ' :' : . , . ' ' . . ' , ' ' ' , ' .
by said locking means in a position in which they form the closed bottom of a compartment when the supporting arms are in their top position; and flanges at the inner ends of re-spective supporting arms and corresponding flanges associated with the outer ends of said supporting arms in an oblique position relative to the longitudinal direction of the suppor-ting arms, so that the supporting arms are locked, pair by pair, to form an acute angle, seen in profile.
Thus, the principal characteristic features of the inven~
tion are:
That the timber lot is formed on rigid supporting arms suspended by pairs of flexible suspending organs;
: 20 :::
. - 2b .
-. .
~, . . .
~ 3 that by lenghtening the hanging part of thesuspending organ pairs, the supporting arms are lowered under the level of the take-up device;
that the locking of said supporting arms is opened or allowed to open;
that the supporting arms are lifted to the top position by shortening the hanging part oE the suspending organ pairs;
that the supporting arms are locked to form a closed bottom of the compartment for receiving pieces of the next timber lot, for which the procedure ph~ses defined above will be repeated.
The principal characteristic features of a timber sorting compartment in which the inventive procedure is allied are:
That to the lower end, at a suitable polnt, of said flexible suppor~ers there are fastened rigid supporting '' arms with appropriate locking equipment;
that underneath the level of the take-up conveyor there are suitable organs for opening said locking equip-ment, and that,in thP top part of the compartment there are particular guiding organs for guiding the supporting arms so to lock them in the position where they form the-closed bottom of the compartment when in the top position.
There has thus heen outlined rather broadly the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may he better appreciated. There are, of course, additional features of the invention that will be described more fully hereinafter. Those skilled in the art will appreciate that the conception on which this disclosure is based may readily be utiliÆed as the basis of the designing of other methods and structures for carrying out the pur-poses of this invention. It is important, therefore, that ~ .
~ -- 4 this disclosure be regarded as including such equivalent constructions as do not depart from the spirit and scope of the invention.
Brief Description of the Drawings Several embodiments of the invention have been chosen for purposes of illustration and description, and are shown in the accompanying drawings forming a part of the specification, wherein;
Fig. 1 shows the compartment section of a timber sorting installation, in which compartment section the inventive procedure is applied~ wi~h different compartments shown in different phases of operation;
Fig. 2 is a plan view o a compartment section shown in Fig~ l; and Fig. 3 ~hows the bottom of a compartment in five different phases o~ operation and in a larger scale.
Descxiption of the Preferred Embodiments As shown in Figs. 1 and 2, timber pieces a, b ~ are, with hooks 22 o~ top conveyor 20, brought to a sort-ing compartment assembly that comprises several successive sorting compartments, into which timber pieces fall from hooks 22 according to controlled impulses. The dropping is carried out with dropping equipment 21, known as such, with for instance, stopper arms that come to the front of timber piece b as conveyor 20 moves in the direc tion of arrow E, whereat~itimber piece b falls (arrow B) into the sorting compartment.
Below the sorting compartments there is a lower take-up conveyor 15 that takes timber lots T to be further processed, for instance to ribbing and packing apparatusO
Instead of bottom conveyor 15, timber carriàges can also be used.
¦ The frame structure of the sorting compartments comprise vertical beams 31 supported on foundation 30 and -' :
connected with each other by horizontal beams 32 to which traverses 33 are fastened.
The bottoms o the compartments comprise twin supporting arms 12a and 12b which are ~astened at their outer ends to flexible suspender or supporter steel ropes, straps or similar items lOa, lOb. At their top ends, the flexible supporter pairs axe guided to winder equipment 17, driven by motors 18 via chains 29.
Supporters pairs lOa, lOb o~ each sorting compartment, of which there are, side by side, two or more pairs, for instance three, ~s in Fig. 2, are connected with driving motor 18 by means of ~ 28, said motor 18 being controlled by an automatic system, known as such, to start according to a certain automatic program as the timber compar~ment is full. This state of fullness can ~e indicated for instance with photocell equlpment, also known as such.
The construction and f~mctioll of a compartment device in accordance with the invention will now be de-scribed. In Fig. 1, the left-side compartment is empty and ready to receive on its closed bo~tom timber pieces coming from top conveyor 20, said bottom comprising arm pairs 12a"', 12b"', interlocked by means of locking device 140 As timber pieces are introduced into the compartment~ the bottom is moved downwardly as motor }8 : :
lets supporters lOa, lOb move downwardly in the direction of arrow C.
In Fig~ 1j timber lot T3 has accumulated into the compartment second from the left, and supporters lOa lOb, with the completed timber lot, is lowered in the direction of arrow C so as to place timber lot T3 on the bottom conveyor 15. This phase of operation is illustrated with the next compartment, in which timber lot T2 has been placed on the bottom conveyor 15, and as supporters lOa' and lOb' have further been lowered, the rigid support-ing arms 12a, 12b turn from their acute-angled (angle a) :: :
, position so that said angle ~ opens and the interlocking of the ends of arms 12a' and 12b' is released. For this purpose, on fo~undation 30 there are protruding parts 16 that effect ~ opening of the interlocking upon contact by releasing flan~e 35b at the end of supporting arm 12b' from behind the locking spur of locking arm 14'. After this~ the flexible supporters move to positions indicated in Fig. 1 with supporters lOa"' and lOb "' on both sides of timber lot T2, after which supporting arms 12a" and 12b" arer con-trolled by the automatic system, wound up in the direction of arrow D as shown in right-hand compartment of Fig. l; the timber lot T1, after being discharged from this compartment, is no more supported by compartmen~ sections 12 and 10/ and is ready to be removed, in the direction of arrow A, further on to packing and ribbing apparatus, for instance.
Another advantage of the invention is that, immediately after the i~terlocking between the ends o~
arms 12a' and 12b' has been released, it is possible to start, by means of lower conveyor lS, moving the,timber lot T2 ~orwardl be~ore it is necessary to lift arms 12al and 12b' upwardly. Arms 12a' and l~b' can, of course, be lifted to the top position past timber lot T2 before starting to move lot T2 by means of the bottom conveyor 15.
As supporting arms 12a" and 12b" move from the position of Fig. 1 upwardly, flanges 25 of their top ends become guided by oblique surfaces 23 to -the position shown in Fig. 3I, wherein flanges 25 have come underneath the overhead ledge 27 (Fig. 1). As sup-porters lOa~ lOb are tightened even more, the apparatus reaches the position shown in Fig. 3II, in which locking arm 14 is guided behind ~lange 35b at the end of arm 12b, which has already taken place in Fig. 3III, in which locking arm 14 "' has extended behind flange .
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35b"', and spur 36 of 1ange 35a"' has become positioned under the protrusion of flange 35b'". Now the compart-ment bottom, formed by rigid arms 12a "' and 12b "', is in the top position ready to take up the next timber lot.
In Fig. 3IV, supporters lOa and lOb start to loosen and arms 12a and 12b start to move downwardly and the lower part of flange 35b of arm 12~ is locked behind the locking spur of locking arm 14, in which position arm 14 is held in position by spring 19, which turns locking arm 14 around its pivot 37 to the locking position. In Fig. 3II, spring 19 lets arm 14 turn so ` , as to permit the locking to take place.
In the i~lustration of Fig. 3IV, arms 12a and 12b are coated with rubber or some other corresponding material 38 for reducing harmful impact forces when timber pieces fall on arms 12a, 12b.
We believe that the construction of our novel sorting compartment and its method of use will be understood that the advantages thereof will be fully ap-preciated by those persons skilled in the art.
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Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method for the use of timber sorting compartments, in which method a sorting compartment is filled with timber pieces, after which the sorting compartment is opened and the accumulated timber lot is allowed to discharge onto take-up equipment, by means of which the timber lot is then carried on to be further processed, after which the compartment is closed to be ready to receive the next timber lot; wherein the method comprises the steps of: accumulating the timber lot upon rigid supporting arms suspended and extended by pairs of flexible suspending means, these means being located on both sides of the accumulated timber lot; lengthening the pairs of flexible suspending means, then opening or allowing the sup-porting arms to open; lifting the supporting arms independently and by separate paths to a top position by shortening the pairs of flexible suspending means; locking the supporting arms to form a closed bottom of the compartment for receiving pieces of the next timber lot, and repeating the phases for the next timber lot.
2. A method in accordance with claim 1, wherein the timber lot is formed upon supporting arm pairs suspended by pairs of suspending means, arms of said supporting arm pairs being interlocked, and further including the steps of: open-ing or allowing said interlocking of supporting arm pairs to open and lifting the respective supporting arms of the pairs of supporting arms, separated from each other, to the top position, shortening the pairs of flexible suspending means, and locking the supporting arms or each pair in the top position to form the closed bottom of the compartment for the take-up of the next timber lot.
3. A method in accordance with claim 2, including the step of guiding the arms of the supporting arm pairs, in their top position, to form an acute angle with their inner ends towards each other, so that they interlock as pairs to form the closed bottom of the compartment.
4. A method in accordance with claims 1, 2 or 3, in-cluding the step of raising and lowering the supporting arms by synchronously winding and unwinding the pairs of flexible suspending means.
5. A sorting compartment of a timber sorting installa-tion, comprising: flexible supporters, connected at the top ends thereof with winding equipment, rigid supporting arms fastened to lower ends of said supporters, locking means con-nected to adjacent ends of said supporting arms, a take-up conveyor, means positioned beneath the level of the take-up conveyer for unlocking said locking means, and guide means at the top of the compartment for guiding said supporting arms so that said supporting arms are locked by said locking means in a position in which said supporting arms form the closed bot-tom of a compartment when the supporting arms are in a top position.
6. A sorting compartment in accordance with claim 5, wherein the supporting arms comprise supporting arm pairs fas-tened near their outer ends to flexible supporters, said lock-ing means comprising flanges at the inner ends of respective supporting arms, a locking arm having a spur carried by one supporting arm of each pair, said spring means associated with said locking arm urging said spur into locking engagement with the flange means of the other supporting arm.
7. A sorting compartment in accordance with claim 6, wherein said flanges and corresponding flanges at the outer ends of said supporting arms are in an oblique position in relation with the longitudinal direction of the supporting arms, so that said supporting arms are locked, pair by pair, to form an acute angle, seen in profile.
8. A sorting compartment in accordance with claim 7, wherein in the top part thereof, at both sides, there are guid-ing surfaces and further spurs, under which spurs the corres-ponding flanges of the top end of each supporting arms is guid-ed so as to effect interlocking of the outer ends of the sup-porting arms.
9. A sorting compartment of a timber sorting instal-lation, comprising: flexible supporters, connected at top ends thereof with winding equipment, rigid supporting arms, fastened to lower ends of said supporters, locking means con-nected to adjacent ends of said supporting arms, a take-up con-veyor, means positioned beneath the level of the take-up con-veyor for unlocking said locking means, and guide means at the top of the compartment for guiding said supporting arms so that said supporting arms are locked by said locking means in a position in which the supporting arms form a closed bottom of a compartment when the supporting arms are in a top posi-tion; and flanges at inner ends of respective supporting arms and corresponding flanges associated with outer ends of said supporting arms in an oblique position relative to the longi-tudinal direction of the supporting arms, so that the support-ing arms are locked, pair by pair, to form an acute angle, seen in profile.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI791264A FI59039C (en) | 1979-04-18 | 1979-04-18 | FOERFARANDE FOER ANVAENDNING AV TRAEVARUSORTERINGSFACK SAMT ETT FOERFARANDET TILLLAEMPADE SORTERINGSFACK |
| FI791264 | 1979-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1146111A true CA1146111A (en) | 1983-05-10 |
Family
ID=8512586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000350055A Expired CA1146111A (en) | 1979-04-18 | 1980-04-17 | Lumber sorter accumulator |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA1146111A (en) |
| FI (1) | FI59039C (en) |
| NO (1) | NO152825C (en) |
| SE (1) | SE451679B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8662286B2 (en) | 2010-10-15 | 2014-03-04 | Sec Sawmill Equipment Company | Pivot hook limiter for use in lumber sorter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220297161A1 (en) * | 2019-07-05 | 2022-09-22 | Novilco Inc. | Lumber bin sorter |
-
1979
- 1979-04-18 FI FI791264A patent/FI59039C/en not_active IP Right Cessation
-
1980
- 1980-04-17 SE SE8002890A patent/SE451679B/en not_active IP Right Cessation
- 1980-04-17 NO NO801116A patent/NO152825C/en unknown
- 1980-04-17 CA CA000350055A patent/CA1146111A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8662286B2 (en) | 2010-10-15 | 2014-03-04 | Sec Sawmill Equipment Company | Pivot hook limiter for use in lumber sorter |
Also Published As
| Publication number | Publication date |
|---|---|
| FI59039B (en) | 1981-02-27 |
| NO152825B (en) | 1985-08-19 |
| SE451679B (en) | 1987-10-26 |
| FI791264A (en) | 1980-10-19 |
| NO152825C (en) | 1985-11-27 |
| SE8002890L (en) | 1980-10-19 |
| NO801116L (en) | 1980-10-20 |
| FI59039C (en) | 1981-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |