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High Speed Pneumatic Serial Punch

IP.com Disclosure Number: IPCOM000097567D
Original Publication Date: 1961-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Abramson, SE: AUTHOR

Abstract

The punch apparatus comprises a hollow cylindrical valve 1 constantly rotating in a bore in a valve body 2. High pressure air in chamber 3 flows through a plurality of axially spaced banks of radial holes 4 to keep valve 1 centered and reduce wear. To punch a hole in a row of a card corresponding to a particular bank, a corresponding magnet 5 is energized to attract and rock its armature 6 clockwise about a pin 7. This shifts a piston valve 8 to cause valve ports 9, 10 to interconnect ports 11, 12, 13 and 14, respectively, as shown.

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High Speed Pneumatic Serial Punch

The punch apparatus comprises a hollow cylindrical valve 1 constantly rotating in a bore in a valve body 2. High pressure air in chamber 3 flows through a plurality of axially spaced banks of radial holes 4 to keep valve 1 centered and reduce wear. To punch a hole in a row of a card corresponding to a particular bank, a corresponding magnet 5 is energized to attract and rock its armature 6 clockwise about a pin 7. This shifts a piston valve 8 to cause valve ports 9, 10 to interconnect ports 11, 12, 13 and 14, respectively, as shown.

Since one of the holes 4 is then aligned with port 9, air under pressure flows via 11, 9 and 12 to the upper side of a punch piston 15 to drive a punch 16 down to punch a card. Concurrently the under side of the piston is vented via 14, 10 and vent port 13.

Thereafter, as valve 1 rotates, hole 4a registers with port 17 to supply air to chamber 18 to push piston valve 8 to the right to normal position in which armature 6 hits stop 19. Now port 20 in valve 8 connects ports 21 and 13 to vent the upper side of piston 15.

Air is now supplied to the under side of the piston via 4a, 17, 18 and 14 to retract punch 16.

Adjacent each radial hole 4 is a longitudinal cavity 22 which is formed in the outer periphery of, and extends the length of, the valve body 2. As each hole 4 is rotated past port 17, a corresponding cavity 22 is carried into registry with port
17. This vents chamber 18 and also, via port 14, ve...