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Bi-directional Adder

IP.com Disclosure Number: IPCOM000097015D
Original Publication Date: 1962-Apr-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Raider, JW: AUTHOR

Abstract

Each station of the hydraulic adder consists of a cylinder pair 10 having identical pre-calibrated volumes. Downward movement of associated spools 11 drives fluid out along a main feed line 12. This is via check valves 13 which only pass fluid in the direction of the arrow. Drive for spools 11 is provided by individual torque motors 14 for each station. These are interconnected with the associated spool pair such that, on a downward drive cycle of one spool, its associated spool is simultaneously driven upward. Upward motion of a spool 11 draws fluid into the cylinder chamber filling it for a subsequent drive cycle. Portions 15 serve to dampen filling and feed operations.

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Bi-directional Adder

Each station of the hydraulic adder consists of a cylinder pair 10 having identical pre-calibrated volumes. Downward movement of associated spools 11 drives fluid out along a main feed line 12. This is via check valves 13 which only pass fluid in the direction of the arrow. Drive for spools 11 is provided by individual torque motors 14 for each station. These are interconnected with the associated spool pair such that, on a downward drive cycle of one spool, its associated spool is simultaneously driven upward. Upward motion of a spool 11 draws fluid into the cylinder chamber filling it for a subsequent drive cycle. Portions 15 serve to dampen filling and feed operations.

Other stations 16, 17, and 18 (in block form) have pre-calibrated volumes 2, 4 and 8 relative to the first station. Thus, there is provided a capability for binary to decimal conversion.

Torque motor 19 is selectively actuated at the same time as the motors 14. This action positions valve 20 in either the add or subtract condition. This is with its included spool in the uppermost and downmost conditions, respectively. Depending on the disposition of valve 20, accumulator cylinder 21 has its drive spool transferred to the right (add) or to the left (subtract). Such transfer is a precise amount, determined by the quantity of fluid transferred to it via feed line
12. At the same time valve 20 is positioned, valve 22, interconnected with the valve 20 and the cylinder 21, has its...