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Publication numberUS1997157 A
Publication typeGrant
Publication dateApr 9, 1935
Filing dateFeb 18, 1932
Priority dateOct 31, 1929
Publication numberUS 1997157 A, US 1997157A, US-A-1997157, US1997157 A, US1997157A
InventorsGustav Tauschek
Original AssigneeIbm
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Card controlled machine
US 1997157 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

April 9, 1935. sc K 1,997,157

CARD CONTROLLED MACHINE Original Filed Oct. 31, 1929 INVENTOR.

Patented Apr. 9, 1935 UNITED STATES PATENT OFFICE CARD CONTROLLED MACHINE Gustav Tauschek, New York, N. Y., assignor, by mesne assignments, to International Business Machines Corporation, New York, N. Y., a corporation of New York 7 Claims.

The present invention relates, particularly, to improvements in electrical arrangements for analyzing members provided with controlling index points, such members being composed of cards, or the like, and are employed for controlling the operation of devices in record controlled machines used for statistical and bookkeeping purposes.

This application is a division of the co-pending application, Serial No. 403,854, filed Oct. 31, 1929.

The object of the invention is to apply to a card or plate, of insulating material, designations having the same electrical property but varying in value so as to represent different digits.

More specifically it is an object of the invention to designate the different digits on a tabulating card by metallic elements having different values of electrical resistance, each of such metallic elements being carried by the tabulating card of insulating material and adapted to be analyzed by electrical devices so as to represent the digital value by a suitable electrical measuring instrument.

The above objects are attained by means hereinafter described and illustrated in the accompanying drawing in which there is shown a tabulating card provided with several designations of the type described and correlated with electrical analyzing devices.

At the index point positions in which the designations are to be made there are impressed electrical conducting bodies l8, in a card I or strip of insulating material.

In order to characterize the value of the designations the metallic bodies 18 have different electrical resistances corresponding to the digital value to be designated. The designation of the numeral I" is secured, for example, by a body consisting of a metal alloy l8 having a high electrical resistance, the numeral 2" by a metal alloy which has an electrical resistance of a lesser value, and so on, up to the designation representing the numeral "9 which has the lowest electrical resistance.

When a card I, prepared in this manner, isbrought between an electrical conducting sensing element 2 and an electrical conducting support 3, a current is caused to flow through a circuit which includes the sensing element 2 and the metallic body it which is analyzed to aiiect a proportional deflection of a pointer of a conventional ammeter 6 electrically connected in the same circuit. It will be understood that the extent of the deflection of the pointer of the ammeter 6 is proportional to the conductivity of the body i8 in electrical contact with the sensing element 2.

I claim:

1. A tabulating card carrying a series of metallic elements of varying inherent electrical conductivities insulated from each other and adapted to control the magnitude of current in an electric circuit.

2. A tabulating card having embedded therein, insulated from each other, metallic elements of graduated electrical conductivities and adapted to control the magnitude of current in an electric circuit.

3. A tabulating card of electrically non-conducting material and carrying spaced elements of different alloys, the electrical conductivity of each controlling the amount of current in an electric circuit.

4. A tabulating card of electrically non-conducting material carrying a metallic element the inherent electrical resistance of which is of a value according to a character it represents.

5. The combination of a tabulating card containing metallic elements insulated from each other and of graduated electrical conductivities, and electrical analyzing means including a pair of contact devices for analyzing one of said elements for determining the extent of current flow governed by said element.

6. The combination of a tabulating card containing metallic elements insulated from each other and of alloys having different electrical conductivities, and electrical analyzing means including a base plate contacting all of said elements for analyzing said elements for determining the extent of current flow governed by said elements.

7 The combination of a tabulatlng card having embedded therein, insulated from each other, metallic elements of different electrical conductivities to represent different characters,- and electrical analyzing means including a single element electrically contacting the surface of a related one of the elements for determining the extent of current flow in its associated circuit.

GUSTAV TAUSCHEK.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2546666 *May 6, 1946Mar 27, 1951Max FleischerSelf-examination device
US2697514 *Jul 3, 1952Dec 21, 1954Walter A StahlMail sorting device
US2750108 *Oct 12, 1953Jun 12, 1956 Electrical vote counting machine
US3003631 *Oct 8, 1956Oct 10, 1961Bernard L StockMeans for detecting the presence of contents in envelopes
US3217142 *Jan 29, 1962Nov 9, 1965Lamm Earl SData compiling system
US3638162 *May 4, 1970Jan 25, 1972Gulf & Western Ind Prod CoProgramable electric circuit card
US4164822 *Jan 4, 1978Aug 21, 1979Batton James LPortable map reading system
US4313087 *Feb 7, 1980Jan 26, 1982Weitzen Edward HApparatus for detecting electrically conductive coatings on documents
US4350883 *Jun 24, 1980Sep 21, 1982Imphy S.A.Method of marking and of identifying objects marked by electrically conducting elements
US4706084 *Oct 3, 1985Nov 10, 1987Pierre MeyersCoded key-type locking system
Classifications
U.S. Classification235/441, 235/492, 439/43, 200/46
International ClassificationG06K19/067
Cooperative ClassificationG06K19/067
European ClassificationG06K19/067