US3757965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stacking of articles
Assignee: Davy Loewy Ltd
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Filing: 1971-06-16
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Granted: 1973-09-11
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Expires: 1991-06-16
Abstract
Abstract To form a stack of elongate articles, such as steel bars, successive arrays of the articles are formed and each array in turn is pushed to a stacking location where it is moved over the preceding array with the lengths of the articles inclined to the length of the articles in the preceding array. When the new array has been brought to a position approximately above the previous array, the articles of the new array are brought into substantial parallelism with those of the preceding array.
Inventors
- 👤 Renshaw G Lendrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:38
CPC Classifications
B; B65; B65G; B65G57/00; B65G57/02; B65G57/16; B65G57/18; B65G57/09; B65G57/10; B65G57/20; B65G57/22; B65G57/24; B65G57/245
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
247 words
An apparatus for stacking elongate articles into a stack of the type descriBed, a receiving station for said articles, a stacking station spaced from said receiving station, first and second moving means, said first and second moving means being arranged to engage different longitudinal portions of an article or and array of articles to be stacked and to traverse between said two stations, first means for operating at least said first moving means so that a portion of the article or the array being of articles stacked is moved from said receiving station toward said stacking station so that the length of the article or articles is or are inclined to the length of the article or articles of the preceding already stacked array in said stacking station, a second means for operating said second moving means so that after the said portion of the article or the array of articles has been pushed over the preceding array the remaining portion of the article or articles of the array is or are brought into parallelism with that or those of the preceding aray in said stacking station, control means for sequentially actuating said first and second operating means, and wherein the construction and relationship of the stations and the moving means are such that when the article or articles is or are pushed from said receiving station to said stacking station it or they is or are pushed across and supported by a preceding already stacked array.
Claim 2
Independent Claim
247 words
An apparatus for stacking elongate articles into a stack of the type descriBed, a receiving station for said articles, a stacking station spaced from said receiving station, first and second moving means, said first and second moving means being arranged to engage different longitudinal portions of an article or and array of articles to be stacked and to traverse between said two stations, first means for operating at least said first moving means so that a portion of the article or the array being of articles stacked is moved from said receiving station toward said stacking station so that the length of the article or articles is or are inclined to the length of the article or articles of the preceding already stacked array in said stacking station, a second means for operating said second moving means so that after the said portion of the article or the array of articles has been pushed over the preceding array the remaining portion of the article or articles of the array is or are brought into parallelism with that or those of the preceding aray in said stacking station, control means for sequentially actuating said first and second operating means, and wherein the construction and relationship of the stations and the moving means are such that when the article or articles is or are pushed from said receiving station to said stacking station it or they is or are pushed across and supported by a preceding already stacked array.
Claim 3
Dependent Claim
53 words
Apparatus according to claim 1 in which said first and second means comprise a fluid operated cylinder for each moving means arranged to move that moving means in a dirction transverse to the lengths of the articles when stacked, and valve means for the cylinders which are arranged to be operated in sequence.
Claim 4
Dependent Claim
50 words
Apparatus according to claim 2 in which said control means includes a limit switch located in the path of the first operated moving means, the switch being arranged, when actuated by the moving means, to operate the valve means to initiate operation of the other or others of the cylinders.
Claim 5
Dependent Claim
22 words
Apparatus according to claim 1 in which each moving means is curved to facilitate turning movement of the elongate articles about them.
Claim 6
Dependent Claim
35 words
Apparatus according to claim 1 in which the first moving means to be operated is arranged to engage the nearest article of each successive array at a position displaced from the ends of that article.
Claim 7
Dependent Claim
47 words
An apparatus according to claim 1 in which said stacking station includes support means for receiving an array to be stacked, and means for relatively adjusting the support means and said moving means to enable a succeeding array to be superimposed over a preceding already stacked array.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |