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Fluid Decimal Counter

IP.com Disclosure Number: IPCOM000096596D
Original Publication Date: 1963-Aug-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Truslove, DJ: AUTHOR

Abstract

In this device, one or more globules 10 of liquid are indexed around a closed path. As in A, this path is a series of cavities arranged in a ring 11 and interconnected with one another via restricted passages 12. The liquid is one, such as mercury, having a high surface tension. The walls of the cavities are of glass or other material which are not wetted by the liquid.

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Fluid Decimal Counter

In this device, one or more globules 10 of liquid are indexed around a closed path. As in A, this path is a series of cavities arranged in a ring 11 and interconnected with one another via restricted passages 12. The liquid is one, such as mercury, having a high surface tension. The walls of the cavities are of glass or other material which are not wetted by the liquid.

To advance a globule clockwise around ring 11, a fluid pressure count pulse is supplied to duct 13 (see B), while pressure fluid is supplied to duct 14.In those cavities not containing liquid, pressure fluid from 13 flows via branches like 13a and 13c directly across the empty cavity into corresponding ducts like 15a and 15c. Pressure fluid from 15a collides with that supplied via 14 to branch 14a at a corresponding Not 16a to discharge into vented outlet 17a. However, since cavity 1 is filled with liquid, branch 13b is sealed off, causing pressure fluid supplied from 14 via 14b to 18b to force at least a major part of globule 10 rightward from cavity 1 toward cavity 2. Transfer of liquid from cavity 1 to cavity 2 is then completed by the surface tension forces arising from distortion of the globule.

To enable a device to perform subtraction as well as addition, three additional ducts are provided to each cavity. For example, as indicated by broken lines for cavity 1, this requires a branch duct 23b leading from a count pulse duct 23, branch 24b leading from main duct 24 and...