Morse code practice set

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OBJECT TYPE
MECHANICAL/TAPE
DATE
1935
ARTIFACT NUMBER
1997.0361.001
MANUFACTURER
INSTRUCTOGRAPH CO.
MODEL
JUNIOR
LOCATION
Chicago, Illinois, United States of America

More Information


General Information

Serial #
201
Part Number
1
Total Parts
4
AKA
N/A
Patents
N/A
General Description
.1 WOODEN BOX HAS COATED CLOTH COVERING; METAL, GLASS AND SYNTHETIC WORKING PARTS. FABRIC COVERING ON BATTERY CONNECTION CABLES..2-.3 PAPER TAPE ON WOODEN SPOOLS..4 METAL CRANK HANDLE HAS WOODEN KNOB. PT BATTERY CASE IS PAPER; METAL FITTINGS. PT VACUUM TUBE HAS GLASS, METAL & SYNTHETIC COMPONENTS.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length
27.0 cm
Width
18.5 cm
Height
18.5 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Communications
Category
Telegraphy
Sub-Category
N/A

Manufacturer

AKA
INSTRUCTOGRAPH
Country
United States of America
State/Province
Illinois
City
Chicago

Context

Country
North America
State/Province
Unknown
Period
PROBABLY USED BETWEEN C. 1935 AND 1945
Canada
Unknown
Function
USED TO PRACTICE DECIPHERING MORSE CODE.
Technical
AN EXAMPLE OF EARLY EQUIPMENT USED TO AUTOMATE THE TEACHING OF MORSE CODE. SPRING DRIVEN MOTOR DRAWS A PUNCHED PAPER TAPE OFF A REEL & THROUGH A SPRING CONTACT, WHERE IT MAKES OR BREAKS AN ELECTRICAL CURRENT BEFORE BEING TAKEN UP ON A 2ND REEL. CURRENTIS MODULATED BY A VACUUM TUBE OSCILLATOR. MONITORING WITH HEADPHONES, THE USER HEARS "BEEPS" RESEMBLING THE CODED SIGNALS OF RADIOTELEGRAPHY [REF.1]
Area Notes
Unknown

Details

Markings
.1PT LABEL AFFIXED TO INSIDE OF LID: ' MFD. BY/ INSTRUCTIGRAPH CO./ 912 LAKESIDE PLACE/ CHICAGO, - ILLINOIS/ PATENT NO. 1,725,145' "178" HANDWRITTEN IN PENCIL ON LABEL/ METAL PLATE ON SIDE: '201'/ STAMPED IN [speed] SCALE: 'F 80 S'. LOCKS MARKED "EAGLE LOCK CO./ TERRYVILLE, CONN./ MADE/ IN/ U.S.A."/ PRINTING ON pt BATTERY CASE INCLUDES: 'NO 771 4 1/2 VOLTS/ EVEREADY/ TRADE MARK/ RADIO C BATTERY/ NATIONAL CARBON COMPANY/.../ MADE IN CANADA/ PATENTED/ 1927, 1929,/ 1930, 1931'. pt VACUUMTUBE MARKED "MADE IN/ 30/ CANADA/ GE/ GENERAL ELECTRIC/ RADIOTRON" and "LICENSED ONLY TO EXTENT/ INDICATED ON CARTON".
Missing
METAL COLLAR AROUND CRANK HOLE; PART OF BACK PANEL; ADDITIONAL SPOOLS AND PAPER TAPE; INSTRUCTION BOOKLET [REF 2]
Finish
.1 CASE HAS FAUX BLACK LEATHER COVERING ON EXTERIOR; SHINY SILVER METAL FITTINGS AND SELECTED COMPONENTS; GREEN, BLACK AND RED WOVEN FABRIC COVERING ON CABLES..2-.3 VARNISHED WOODEN SPOOLS HOLD BEIGE PAPER TAPE..4 SILVER METAL CRANK HANDLE HAS TURNED WOODEN KNOB, PAINTED BLACK. PT BATTERY CASING IS OFF-WHITE, WITH BLUE, ORANGE AND BLACK MARKINGS. PT VACUUM TUBE'S CLEAR GLASS SLEEVE HAS BEEN PARTIALLY SILVERED; BLACK BASE.
Decoration
N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

INSTRUCTOGRAPH CO., Morse code practice set, circa 1935, Artifact no. 1997.0361, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1997.0361.001/

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