Leitz Ultropak microscope lamp
Date: 1950
Inventory Number: 2009-1-0070b
Classification: Microscope Light Source
Subject:
Maker: Ernst Leitz (company) (1849 - 1986)
User: William Alexander Jackson (1905 - 1964)
User: Houghton Library, Harvard University (founded 1942)
Cultural Region:
Dimensions:
box: 5.1 × 14.2 × 6.4 cm (2 × 5 9/16 × 2 1/2 in.)
box: 3 × 7.1 × 6.8 cm (1 3/16 × 2 13/16 × 2 11/16 in.)
Accessories: Ultropak microscope lamp; sector shutters (2); glass filters (5); driver; spare bulbs (8); boxes (2).
Description2009-1-0070 is a Leitz binocular compound microscope on a pillar stand with the Ultropak accessories for incident light on opaque objects. Due to the complexity of the parts, this entry is split up into the following:
2009-1-0070a: Leitz binocular compound microscope on stand.
2009-1-0070b: Leitz Ultropak microscope lamp and accessories
2009-1-0070c: Leitz UO objective 3.8X extension tube and diaphragm
2009-1-0070d: Leitz UO objective 6.5X extension tube and diaphragm
2009-1-0070e: Leitz UO objective 11-50X extension tube and diaphragm
2009-1-0070f: Leitz oculars in box
2009-1-0070g: Leitz dust covers
2009-1-0071: Leitz transformer for Ultropak lamp
The packing slip dated 5-4-50 from E. Leitz Inc., New York, lists these items and others now missing. The CHSI file also contains related correspondence, Ultropak catalogues from 1935 and 1939, a price list, and more items related to this collection.
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2009-1-0070b
The Ultropak light-source attachment is present and stored in a red cardboard box with a hinged lid marked "Leitz" and "Ultropak." The low voltage bulb (8 volt, 0.6 amp) is held in a metal housing by a knurled screw, and the housing is centerable in the changing device by means of 3 more screws. The electrical cord is wrapped in braided cord and has a 2 prong plug. (The plug mates with the adjustable transformer, 2009-1-0071). A wooden fitting in the box holds 2 spare light bulbs; 2 blackened brass diaphragms with rotating sectors (aka "sector shutters"); 5 glass disk filters (ground white glass, daylight, heat absorption blue, green, and yellow); and a pin driver.
A square red cardboard box with lid holds 6 spare bulbs inserted into a cardboard frame. The lid is marked "Leica / E. Leitz, Inc. / NEW YORK."
2009-1-0070a: Leitz binocular compound microscope on stand.
2009-1-0070b: Leitz Ultropak microscope lamp and accessories
2009-1-0070c: Leitz UO objective 3.8X extension tube and diaphragm
2009-1-0070d: Leitz UO objective 6.5X extension tube and diaphragm
2009-1-0070e: Leitz UO objective 11-50X extension tube and diaphragm
2009-1-0070f: Leitz oculars in box
2009-1-0070g: Leitz dust covers
2009-1-0071: Leitz transformer for Ultropak lamp
The packing slip dated 5-4-50 from E. Leitz Inc., New York, lists these items and others now missing. The CHSI file also contains related correspondence, Ultropak catalogues from 1935 and 1939, a price list, and more items related to this collection.
-------------------------------------
2009-1-0070b
The Ultropak light-source attachment is present and stored in a red cardboard box with a hinged lid marked "Leitz" and "Ultropak." The low voltage bulb (8 volt, 0.6 amp) is held in a metal housing by a knurled screw, and the housing is centerable in the changing device by means of 3 more screws. The electrical cord is wrapped in braided cord and has a 2 prong plug. (The plug mates with the adjustable transformer, 2009-1-0071). A wooden fitting in the box holds 2 spare light bulbs; 2 blackened brass diaphragms with rotating sectors (aka "sector shutters"); 5 glass disk filters (ground white glass, daylight, heat absorption blue, green, and yellow); and a pin driver.
A square red cardboard box with lid holds 6 spare bulbs inserted into a cardboard frame. The lid is marked "Leica / E. Leitz, Inc. / NEW YORK."
Signedon box of spare bulbs: Leica / E. Leitz, Inc. / NEW YORK
on box for Ultropak and OU 11-50X extension tube: Leitz
on box for Ultropak and OU 11-50X extension tube: Leitz
Historical AttributesUsed by William A. Jackson, first librarian of Houghton Library.
When Houghton Library opened in 1942, Jackson invested in a lot of state-of-the-art equipment for examining books and investigating them. The apparatus included microscopes, black lights, and special lamps.
This particular type of instrument was made as early as 1935, but this one was not purchased until 1950. The earlier date is found in Leitz catalogues related to the Ultropak system. The later date is found on a packing list. These accompanied the microscope kit and are in the CHSI instrument file.
When Houghton Library opened in 1942, Jackson invested in a lot of state-of-the-art equipment for examining books and investigating them. The apparatus included microscopes, black lights, and special lamps.
This particular type of instrument was made as early as 1935, but this one was not purchased until 1950. The earlier date is found in Leitz catalogues related to the Ultropak system. The later date is found on a packing list. These accompanied the microscope kit and are in the CHSI instrument file.
Primary SourcesLeitz Ultropak (New York: E. Leitz Inc, 1935)
Leitz Ultropak for Observations in Incident Light at All Magnifications (New York: E. Leitz Inc., 1939).
Price List of Leitz Microscopes and Scientific-Optical Equipment (New York: E. Leitz Inc., c. 1950).
E. Leitz Inc., New York, packing slip, no. 116355, May 4, 1950. [in CHSI file]
Leitz Ultropak for Observations in Incident Light at All Magnifications
Price List of Leitz Microscopes and Scientific-Optical Equipment (New York: E. Leitz Inc., c. 1950).
E. Leitz Inc., New York, packing slip, no. 116355, May 4, 1950. [in CHSI file]
ProvenanceWilliam A. Jackson, Librarian, Houghton Library, Harvard University, c. 1942 ; transfer to CHSI courtesy of Dennis Marnon, 2009.
