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US3643822A Expired / Lapsed US ⏱️ 0.0 years remaining

Can palletizer

Assignee: G W Hume Co
•
Filing: 1970-02-17
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Granted: 1972-02-22
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Expires: 1990-02-17
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Abstract

Abstract In this automatic can palletizer cans are presented to a long draper and moved thereby to the rear end of a normally stationary short draper having at its forward end can clamps normally holding a front row of cans. A stripper plate lies adjacent the forward end of the short draper, and cans are delivered to it at transfer time. A hoist supports a pallet beneath the normal position of the stripper plate and raises a pallet to a level slightly below the stripper plate. A switch on the long draper releases the can clamps when a desired number of cans have been backed up behind the front row, and thereupon the short draper moves cans onto said stripper plate. Switches are actuated by the cans reaching a stripping wall at the end of the stripper plate, and they reenergize the can clamps, stop the short draper, and cause said stripper plate to move out beneath the stripping end wall and drop the cans onto the pallet or onto a layer of cans already on said pallet, to make a palletized can layer. The hoist is then lowered by the height of one layer of cans and is stopped. The stripper plate then returns to its original position adjacent the short draper. Each time the stripper plate reaches its fully stripped position it picks up a paper sheet the size of the area of the pallet, carries it with it on its return, and releases the paper sheet over the layer of cans. After a preselected number of layers has been deposited on the pallet, the hoist is automatically lowered and the loaded pallel transferred away from said hoist to a dock where it can be picked up and moved elsewhere. Meanwhile, a stack of empty pallets is retained adjacent the hoist, and one empty pallet is transferred to the hoist as the filled pallet is being transferred away therefrom, the empty pallet is then raised to its uppermost position. During this pallet transfer operation, the stripper plate is held in its stripped position, and as the empty pallet is raised and nears its uppermost position, the stripper plate is returned to its original position and deposits on the empty pallet a sheet of paper.

Inventors

  • 👤 Thomas D Birchall

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 23:11
CPC Classifications
B; B65; B65G; B65G57/00; B65G57/02; B65G57/16; B65G57/20; B65G57/22; B65G57/24; B65G57/245; B65B; B65B35/00; B65B35/30; B65B35/50; B65G47/00; B65G47/02; B65G47/04; B65G47/06; B65G47/08; B65G47/084; B65G47/088; B65G57/005; B65G2201/00; B65G2201/02; B65G2201/0235; B65G2201/0244; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/106

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 196 words
A method for palletizing upright cans comprising: normally holding stationary a front row of upright cans, building up cans upright behind said front row in a pattern having the width of the pallet, the rows being nested compactly in a diamond-type pattern, releasing the cans of said front row and moving the whole pattern forward when a desired length of pattern is attained, temporarily supporting the moved-forward cans upright and slightly above a pallet on a surface while moving them with respect to the surface until the full length of the pallet has been transversed by said front row, stopping the forward movement of cans on said surface and holding a row of cans behind those that are temporarily supported above the pallet, so as to provide a new front row for building up the pattern behind, moving the surface forwardly to strip the temporarily supported cans to drop them while upright onto said pallet, lowering the pallet by the height of one can to receive a next layer, and moving the surface rearwardly to its starting point while carrying a paper sheet of substantially the are of the pallet over the lowered layer of cans.
Claim 2
Independent Claim 196 words
A method for palletizing upright cans comprising: normally holding stationary a front row of upright cans, building up cans upright behind said front row in a pattern having the width of the pallet, the rows being nested compactly in a diamond-type pattern, releasing the cans of said front row and moving the whole pattern forward when a desired length of pattern is attained, temporarily supporting the moved-forward cans upright and slightly above a pallet on a surface while moving them with respect to the surface until the full length of the pallet has been transversed by said front row, stopping the forward movement of cans on said surface and holding a row of cans behind those that are temporarily supported above the pallet, so as to provide a new front row for building up the pattern behind, moving the surface forwardly to strip the temporarily supported cans to drop them while upright onto said pallet, lowering the pallet by the height of one can to receive a next layer, and moving the surface rearwardly to its starting point while carrying a paper sheet of substantially the are of the pallet over the lowered layer of cans.
Claim 3
Dependent Claim 42 words
The method of claim 1 wherein after a preselected number of layers has been deposited on said pallet, said pallet is lowered and the loaded pallet is transferred laterally away to a dock where it can be picked up and moved elsewhere.
Claim 4
Dependent Claim 34 words
The method of claim 2 wherein an empty pallet is then put in the original place of the filled pallet and is raised to an uppermost position ready to receive a layer of cans.
Claim 5
Dependent Claim 24 words
The method of claim 3 wherein a sheet of paper of substantially the area of said pallet is then deposited on said empty pallet.
Claim 6
Independent Claim 207 words
A method for palletizing upright cans, comprising: normally holding stationary on a stationary surface on a substantially horizontal plane an front row of upright cans, moving a second surface supporting upright cans to build up a compact diamond-type pattern of upright cans behind said front row on said plane, said pattern having substantially the width of said pallet, releasing the cans of said front row and moving said first mentioned surface forwardly while continuing forward movement of said second mentioned surface to move the whole pattern forward on said plane when a desired length of pattern is attained., temporarily supporting the moved forward upright cans on said plane slightly above a pallet until the full length of said pallet has been traversed by said front row, stopping the forward movement of said cans and holding a row of cans behind those that are temporarily supported above the pallet, so as to provide a new front row for building up the diamond-type pattern therebehind, stripping the temporarily supported cans to drop them, still upright, onto said pallet, supporting them there by gravity, and lowering the pallet by the height of one can to receive a next layer, and continuing the cycle until a full pallet load is achieved.
Claim 7
Independent Claim 207 words
A method for palletizing upright cans, comprising: normally holding stationary on a stationary surface on a substantially horizontal plane an front row of upright cans, moving a second surface supporting upright cans to build up a compact diamond-type pattern of upright cans behind said front row on said plane, said pattern having substantially the width of said pallet, releasing the cans of said front row and moving said first mentioned surface forwardly while continuing forward movement of said second mentioned surface to move the whole pattern forward on said plane when a desired length of pattern is attained., temporarily supporting the moved forward upright cans on said plane slightly above a pallet until the full length of said pallet has been traversed by said front row, stopping the forward movement of said cans and holding a row of cans behind those that are temporarily supported above the pallet, so as to provide a new front row for building up the diamond-type pattern therebehind, stripping the temporarily supported cans to drop them, still upright, onto said pallet, supporting them there by gravity, and lowering the pallet by the height of one can to receive a next layer, and continuing the cycle until a full pallet load is achieved.
Claim 8
Dependent Claim 39 words
The method of claim 5 wherein a store of paper sheets of substantially the same area as the pallet is maintained adjacent the pallet and one said sheet is deposited on each layer of cans after the lowering step.
Claim 9
Dependent Claim 56 words
The method of claim 5 wherein, after a preselected number of layers of cans have been deposited on said pallet, said pallet with its load is transferred away laterally and an empty pallet put in its place and raised to an uppermost position ready to receive the first of a new series of layers of cans.
Claim 10
Dependent Claim 39 words
The method of claim 7 wherein when said pallet reaches its uppermost position and before any cans are loaded onto it, a sheet of paper of substantially the same area as said pallet is placed on said empty pallet.
Claim 11
Dependent Claim 38 words
The method of claim 8 comprising initiating a succeeding step responsive to the completion of a preceding step and initiating the first step, in a new cycle responsive to the completion of the last step of a cycle.
Claim 12
Dependent Claim 37 words
The method of claim 5 comprising initiating a succeeding step responsive to the completion of a preceding step and initiating the first step, in a new cycle responsive to the completion of the last step of cycle.

References Cited (Backward Citations)

US2765599A Cited
US2949179A Cited
US3166203A Cited
US3219203A Cited
US3442401A Cited
US3432045A Cited
US3471036A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-02-21 1975-08-23 1976-02-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-02-21 1979-08-23 1980-02-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-02-21 1983-08-23 1984-02-22 $7700.00 Window Closed / Lapsed

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