US3668692A - Converting device - Google Patents

Converting device Download PDF

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Publication number
US3668692A
US3668692A US836398A US3668692DA US3668692A US 3668692 A US3668692 A US 3668692A US 836398 A US836398 A US 836398A US 3668692D A US3668692D A US 3668692DA US 3668692 A US3668692 A US 3668692A
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US
United States
Prior art keywords
disc
light
apertures
information
coded
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Expired - Lifetime
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US836398A
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English (en)
Inventor
Gosta Roland Englund
Richard Reuben Tice
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Svenska Dataregister AB
Sweda International Inc
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Svenska Dataregister AB
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Publication of US3668692A publication Critical patent/US3668692A/en
Assigned to SWEDA INTERNATIONAL, INC., A CORP OF NE reassignment SWEDA INTERNATIONAL, INC., A CORP OF NE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BANKRUPTCY ESTATE OF SVENSKA DATA-REGISTER AKTIEBOLAG THE A CORP OF SWEDEN IN LIQUIDATION, BY HANS KAJBLAD AND LARS AHRBORG ATTORNEYS-IN-FACT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C15/00—Computing mechanisms; Actuating devices therefor

Definitions

  • ABSTRACT A device for converting the value in a mechanical register into June 28, 1968 Sweden ..8847/68 electrical output signals.
  • the value in the register is transferred to coded means, each one cooperating with a number [52] US. Cl ..340/347 P, 350/273, 340/357 of wires and set to an operative or inoperative position, (being [51] Int. Cl ..G08c 9/06 able to cover or uncover apertures in a stationary disc).
  • the light source being a filament lamp
  • the photosensitive device being a photocell
  • the present invention pertains to a device for converting information from mechanical form into electrical form, where the conversion is accomplished in a new way.
  • the problems arising when accelerating and decelerating a runner supporting the sensing means are eliminated in that the sensing means is stationary.
  • the same information can be converted into electrical signals more than once as the sensing means is rotating continuously, driven by a separate motor.
  • the same information can be converted into electrical signals only once.
  • Another advantage achieved with the invention is that, in addition to information obtained from a cash register or the like, also exchangeable fixed information can be provided in the path for the sensing means.
  • Such fixed information can be, for example, a number for identifying the ofiice machine cooperating with the converter.
  • the device is characterized in that means are provided fortransferring the information to a series of coded means, the coded means being sensed by first sensing means, at least one provided for each one of the coded means, the first sensing means cooperating with a transmitter and a receiver in such a way that by a second rotating sensing means, depending upon the setting of the first sensing means, the communication between the transmitter and the receiver in different positions along the path sensed by the second sensing means is established or blocked, causing the receiver to generate electrical signals corresponding to the information.
  • FIG. 1 is a plan view of a mounting plate supporting the converter and being mounted to the back of a cash register;
  • FIG. 2 is a sectional view, taken along lines 22 of FIG. 1;
  • FIG. 3 shows a number of coded discs being parts of the mechanical-to-electrical converter
  • FIG. 4 shows a part useful for entering fixed information in the converter.
  • a mounting plate 2 supports the various parts of the mechanical-to-electrical converter. Plate 2 is fastened to the back of a cash register by means of screws 4.
  • a shaft 6 (FIG. 2) is, by means of screws 8, secured to brackets 10 which in turn are secured to the mounting plate'2.
  • Shaft 6 supports a number of gears 12, one gear being provided for each decade in the cash register.
  • Each gear 12 is fixedly secured to five coded discs or cams 14a-e forming a cam group.
  • spacers l 1 are provided adjacent to the supported ends of shaft 6.
  • cams l4a-e are provided with cut-outs 16 in certain positions which will be described in greater detail later in connection with FIG. 3.
  • Gears 12 and thus cams 14 are set by gears 18 in the register via intermediate wheels 20 supported on a shaft 22.
  • Intermediate wheels 20 are extending through cut-outs 24 in mounting plate 2 and are meshing gears 12.
  • cam followers 26 are provided which follow each cam 14a-e.
  • Cam followers 26 are supported on a shaft 28 (FIG. 2), concentric with respect to the cams, and surround about three-fourths of the periphery of the cams.
  • the free end 30a of each wire dependent upon the position of cam follower 26, takes a position in which the end covers holes 34 in discs 36, 37 or a position adjacent to the holes.
  • the electrical part of the converter is of the photoelectric kind and comprises a filament lamp 38, a photoelectric device 40 and a rotating sensing device 42.
  • the sensing device 42 in the following also called the rotor, is driven by a motor 44 secured to the mounting plate 2 by means of a screw 45.
  • Filament lamp 38 is supported by a lamp-holder 46 secured to a tube-shaped part 50 which acts as an enclosure for the electrical parts.
  • Tube-shaped part 50 consists of two parts 50a, b which are clamped together by means of screws 52.
  • Part 50b is fastened to mounting plate 2 by means of screws 54.
  • the two parts 50a and 50b between themselves hold the two discs 36, 37 which are annular and have holes 34 spaced along their peripheries. Wires 30 from cam followers 26 go through the passages in guiding plate '32 and between discs 36, 37 into the positions in which the free ends of the wires cover or do not cover the holes 34.
  • Rotor 42 is connected to shaft 56 of motor 44 by means of a coupling comprising a coupling part 58 secured to the motor shaft and another coupling part 60 secured to rotor 42 and cooperating with coupling part 58.
  • Coupling part 60 has a groove 62 in which a plate spring 64 engages.
  • Spring 64 is secured, at the other end, to mounting plate 2 and by adjusting an adjusting screw 66 the spring can be displaced in a direction parallel to the motor shaft. The displacement of the spring permits the axial position of the rotor to be adjusted as the two coupling parts 58, 60 can be moved in relation to each other.
  • Filament lamp 38 is placed in a central recess 68 of rotor 42.
  • a reflector 70 which concentrates the light from the lamp to a point in which a light conductor ends in the recess.
  • Light is conducted through the light conductor to one side of a peripheral groove 74 in the rotor 42, the groove surrounding the holes containing parts of discs 36, 37. From the other side of the groove light is conducted through motor shaft 56 to the photoelectric device 40, being for instance a photo-resistor, the connections to which are designated 40a, b.
  • the photoelectric device 40 is enclosed in an enclosure 78 secured to motor 44.
  • a cover 80 is provided which with intermediate gasket 82 contacts tube-shaped part 50.
  • each gear 12 is coupled to five coded discs or cams 14a-e which are shown in greater detail in FIG. 3.
  • the cams have eleven pitches, ten of which are used for binary representation of the digits -9.
  • Each cam has peripheral cut-outs 16 in the positions where a binary O is to be represented. The remaining positions which are lacking a cutout represent a binary l.
  • the binary code used is a common one comprising five bits, one of which is used for parity control. The binary code is shown in the following table.
  • Decimal Digit Binary Code The parity control infers that for each digit in each decade the number of binary l or 0" is either odd or even whereby a control can be made that the number set in each decade is correctly converted into electrical signals.
  • the number of binary l for each digit is always odd and the conversion of a set number of nine digits is controlled, for example, in that the electrical signals which correspond to binary l affect a flip-flop, the end condition of which indicates if the number of signals is odd or even. How this control can be performed is known to those skilled in the art and will not be described in any greater detail.
  • cams 14a, 14b, 14c and 14d indicate the presence or absence of the decimal digits 1, 2, 4 and 8, respectively, and cam 146 indicates the presence or absence of a parity digit.
  • the five cams are fixedly secured to each other and to one of gears 12, and the decimal digits 0-9 are disposed clockwise along the circumference, the digit 0 being in position twelve oclock and with the position eleven oclock being empty.
  • FIG. 4 shows a comb-shaped part 86 provided with initially five pins 88 corresponding to the five coded discs in each decade.
  • Comb-shaped part 86 has a hole 90 used for fixing, by screw 52, part 86 between annular discs 36, 37 so that pins 88 cover corresponding holes in the discs.
  • a plurality of combsliaped parts 86 can be arranged along the periphery of discs 36, 37 and fixed between discs 36, 37, as described, by means of screws 52.
  • the comb-shaped parts 86 are used to place fixed information, for example register number, in the path of sensing device 44 and parts 86 are coded by removing one or more of pins 88.
  • the remaining holes are always open and are provided for generation of clock signals for timing of the information signals from the holes 34 cooperating with wires 30.
  • the clock signals and the information binary l"-signals are obtained when light from filament lamp 38 via light conductor 72 in rotor 42 is let through holes 34 in discs 36,37 and via light conductor 76 reaches photocell 40, while the binary 0- signals are obtained when no light is let through holes 34 in discs 36, 37.
  • Rotor 42 rotates at a constant speed and when the rotor arm in sweeping over discs 36, 37 the digits set in each decade in sequence are converted into light pulses of two different levels the pulses being converted to electrical signals by photocell 40.
  • the continuous rotation of rotor 42 yields the advantage that the same information can be converted into electrical signals more than once. This is of great importance when information from a plurality of cash registers is to be transferred to a computer at the same time causing a queing-up.
  • cams 14 which correspond to the set number 251843970 causes cam followers 26 to take the positions shown in FIG. 1.
  • the corresponding positions for the free ends of wires 30 are shown in FIG. 1 for two wires only but the remaining wires 30 take the corresponding positions in which their free ends 30a according to the code chosen (see the table) cover or do not cover the corresponding holes 34.
  • a device for converting mechanical information into electrical information comprising coded means
  • elongated means for transferring information from said coded means to the apertures in said disc, said elongated means having a first position and a second position, in said first position said elongated means covers an aperture in said stationary disc and in said second position it exposes the aperture in said stationary disc;
  • a rotating sensing means having an area which scans the apertures in the disc in sequence
  • first light conducting means for conducting light that passes through the exposed apertures to said light sensitive means
  • said light sensitive means converting the light that passes through the exposed apertures in sequence and represents information in said coded means into electrical information signals.
  • the rotating sensing means includes a second light conducting means for conducting light from the stationary light source to the area.
  • the light source is positioned in a central recess in the rotating sensing means
  • the light-sensitive means is positioned on the side of a motor which drives the rotating sensing means
  • the second light conducting means extending from the central recess to the part of the area situated on one side of the disc
  • the first light conducting means extending from the part of the area situated on the other side of the disc through the motor shaft of said motor to the light-sensitive means.
  • the elongated means consist of wires extending from the cam followers through slots in a guide plate to the positions in which the wire ends cover or expose the respective apertures in the disc.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Cash Registers Or Receiving Machines (AREA)
  • Character Input (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Optical Transform (AREA)
US836398A 1968-06-28 1969-06-25 Converting device Expired - Lifetime US3668692A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8847/68A SE319637B (es) 1968-06-28 1968-06-28

Publications (1)

Publication Number Publication Date
US3668692A true US3668692A (en) 1972-06-06

Family

ID=20275175

Family Applications (1)

Application Number Title Priority Date Filing Date
US836398A Expired - Lifetime US3668692A (en) 1968-06-28 1969-06-25 Converting device

Country Status (9)

Country Link
US (1) US3668692A (es)
BR (1) BR6910276D0 (es)
CH (1) CH504054A (es)
DE (1) DE1932193A1 (es)
ES (1) ES368431A1 (es)
FR (1) FR2014376A1 (es)
GB (1) GB1262003A (es)
NL (1) NL6909805A (es)
SE (1) SE319637B (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4802772A (en) * 1988-02-04 1989-02-07 Westinghouse Electric Corp. Nonelectric temperature monitor
US20090280461A1 (en) * 2008-05-08 2009-11-12 Kerwick Michael E Interactive Book with Detection of Lifted Flaps
US12357358B2 (en) 2020-05-19 2025-07-15 Smith & Nephew, Inc. Periprosthetic bone plate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070303A (en) * 1959-01-21 1962-12-25 Black Sivalls & Bryson Inc Movable light path integrator
US3248727A (en) * 1963-02-21 1966-04-26 Bendix Corp Position coder device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070303A (en) * 1959-01-21 1962-12-25 Black Sivalls & Bryson Inc Movable light path integrator
US3248727A (en) * 1963-02-21 1966-04-26 Bendix Corp Position coder device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4802772A (en) * 1988-02-04 1989-02-07 Westinghouse Electric Corp. Nonelectric temperature monitor
US20090280461A1 (en) * 2008-05-08 2009-11-12 Kerwick Michael E Interactive Book with Detection of Lifted Flaps
US8041289B2 (en) * 2008-05-08 2011-10-18 Kerwick Michael E Interactive book with detection of lifted flaps
US12357358B2 (en) 2020-05-19 2025-07-15 Smith & Nephew, Inc. Periprosthetic bone plate

Also Published As

Publication number Publication date
BR6910276D0 (pt) 1973-01-04
NL6909805A (es) 1969-12-30
FR2014376A1 (es) 1970-04-17
SE319637B (es) 1970-01-19
CH504054A (de) 1971-02-28
GB1262003A (en) 1972-02-02
ES368431A1 (es) 1971-05-01
DE1932193A1 (de) 1970-02-05

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Date Code Title Description
AS Assignment

Owner name: SWEDA INTERNATIONAL, INC., 34 MAPLE AVE., PINE BRO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BANKRUPTCY ESTATE OF SVENSKA DATA-REGISTER AKTIEBOLAG THE A CORP OF SWEDEN IN LIQUIDATION, BY HANS KAJBLAD AND LARS AHRBORG ATTORNEYS-IN-FACT;REEL/FRAME:004368/0368

Effective date: 19810729