Browse Prior Art Database

Hopper Stack Elevating

IP.com Disclosure Number: IPCOM000097144D
Original Publication Date: 1962-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

David, BF: AUTHOR

Abstract

This control mechanism comprises selector valve 4 operated by handle 5 which covers one or the other of two valves 1 and 2. With handle 5 positioned as shown, valve 1 is covered and valve 4 connects lines 6 and 7. As the top of the stack of checks 10 on uppermost platform 11 drops toward and below a predetermined level, sensing arm 13 rocks downwardly. This causes sensing valve 3 to connect source S of compressed air to line 6. This is supplied via line 7 to cylinder 8 to raise piston 14 and platform 11 until the top of the stack is raised at least to the predetermined level and closes valve 3.

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Hopper Stack Elevating

This control mechanism comprises selector valve 4 operated by handle 5 which covers one or the other of two valves 1 and 2. With handle 5 positioned as shown, valve 1 is covered and valve 4 connects lines 6 and 7. As the top of the stack of checks 10 on uppermost platform 11 drops toward and below a predetermined level, sensing arm 13 rocks downwardly. This causes sensing valve 3 to connect source S of compressed air to line 6. This is supplied via line 7 to cylinder 8 to raise piston 14 and platform 11 until the top of the stack is raised at least to the predetermined level and closes valve 3.

Meanwhile, a new stack is placed on lower platform 12 which is manually swung horizontally in under platform 11. Then, valve 2 is depressed to establish a bypass from source S via line 16 to cylinder 9 to raise piston 15 and platform 12 until the lower stack substantially abuts the under side of platform 11. Then platform 11 is manually withdrawn from under the upper stack, so that both stacks rest on platform 12. Handle 5 is now shifted to cover valve 2 and connect lines 6 and 16 and also ventline 7. Platform 11 drops to a lower limit position corresponding to that in which platform 12 is shown. Hence, as checks are fed off the stack, valve 3 operates intermittently to supply air to line 16 as necessary to cause cylinder 9 to maintain the top of the stack above the predetermined level.

After a stack is placed on platform 11, it is swung manually und...