memory drum
Date1940-1960
Inventory NumberWJ0402
ClassificationKymograph
Subject
Attributed to
Ralph Gerbrands Company
1930 - 1994
Manufacturer
Bodine Electric Company
1905-present
Cultural Region
Dimensionswithout cord: 30.5 × 31.5 × 21 cm (12 × 12 3/8 × 8 1/4 in.)
Material
DescriptionA small aluminum drum is held in place horizontally by a steel structure fixed to a wooden base. The rotation of the drum is provided by a Bodine motor made in Chicago. Small spikes rather than gears make the wheels turn. The drum's rotation speed is adjusted through the wheels' mechanism. An on-off switch controls the motor. Power is provided by an electrical cord. A piece of paper taped to the drum as the following writings: "brightness - brill".
Signedunsigned
Inscribedin white ink: HARVARD / PSYCHOLOGICAL / LABORATORY
on wood base, stamped: 3
on motor: Type KYC-23, Volts 115 AC / R.P.M. 60, W. 8.5-60 / No. 2013132, Torq 6.6 in. oz.
Function
Ralph Gerbrands Company
Date: circa 1965
Accessories: power cord (attached)
Object number: 1998-1-0012
Ralph Gerbrands Company
Date: circa 1960
Accessories: grey power cord; roll of paper; spare pen; cleaning wire; rubber hat (under pens)
Object number: 1999-1-0007a
Ralph Gerbrands Company
Date: circa 1960
Accessories: Spare pen; roll of paper; power cord; cleaning wire; small sponge; gears (2)
Object number: 1999-1-0002
Ralph Gerbrands Company
Date: circa 1960
Accessories: grey power cord; spare roll of paper
Object number: 1999-1-0008
Ralph Gerbrands Company
Date: circa 1950
Accessories: bob hanging by green thread on side; black and red power cord; spare fastening pins in envelope; spare roll of paper
Object number: 1999-1-0004
Blue Hill Meteorological Observatory
Date: 1890-1910
Accessories: wind vane and anemometer (1996-1-0145b); additional anemometer cup (1996-1-0145c)
Object number: 1996-1-0145a
