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Photographs from the Bendix Time-of-Flight Mass Spectrometer Collection


Held at: Science History Institute Archives [Contact Us]315 Chestnut Street, Philadelphia, PA 19106

This is a finding aid. It is a description of archival material held at the Science History Institute Archives. Unless otherwise noted, the materials described below are physically available in their reading room, and not digitally available through the web.

Overview and metadata sections

The Bendix Corporation was founded in South Bend, Indiana in 1924 by Vincent Bendix and initially specialized in the manufacture of automobile brake systems. In 1928, Bendix acquired the Eclipse Machine Company of Elmira, NY and, as the company subsequently expanded its business to aviation products, rebranded itself as the Bendix Aviation Corporation in 1929. By the 1950s, Bendix was a leading manufacturer and supplier of automotive components, housebuilding products, and other equipment, including scientific instrumentation. Bendix's flagship scientific product was the Time-of-Flight Mass Spectrometer (TOFMS), which dominated the market until newer instruments like the quadrupole mass spectrometer eventually eclipsed the TOFMS. The company reverted to the name Bendix Corporation in 1960 and became a subsidiary of Allied Corporation in 1983; in turn, Allied Corporation subsequently merged with Honeywell in 1999.

This collection consists of photographs documenting the creation, production, and marketing of the Bendix Corporation's flagship analytical instrument, the Time-of-Flight Mass Spectrometer (TOFMS), predominately dating from the 1960s and 1970s. Photographs of different models of the TOFMS and its various component parts, including mass sequencers, cell sample inlet systems, respiratory gas analyzers, and magnetic electron multipliers, make up the bulk of the collection, with a small subset of photographs devoted to gas chromatographs. By and large, the photographs are staged publicity images used for advertising and manuals and only a few photographs capture the instruments in use in a laboratory setting. Photographs of the Bendix Corporation and sales booths of competing companies at the 1973 PITTCON round out the collection.

Collected by Patrick McGinnis during his time working at the Bendix Corporation.

A portion of this collection has been digitized and is available online in our Digital Collections:

Separated from the Bendix Time-of-Flight Mass Spectrometer Collection 1952-1993 (bulk 1960-1980); Gift of Patrick McGinnis, 2010.

Processed by Bertha Adams in 2010. Object identification numbers were assigned to individual photographs.

Science History Institute Archives
Finding Aid Author
Finding aid created by Hillary S. Kativa and encoded into EAD by Melanie Grear.
Finding Aid Date
Access Restrictions

There are no access restrictions on the materials for research purposes and the collection is open to the public.

Use Restrictions

To obtain reproductions and copyright information, contact:

Collection Inventory

Bendix Time-of-Flight Mass Spectrometer Models 1A-3A; Component parts—vacuum system, switches, direct inlet system, etc.; Graphs.
Box 1 Object 2010.024.002-074
Bendix TOFMS apparatus and component parts—Inlet systems, vacuum attachments, control panels, etc.; Exterior and interior views of assorted TOFMS models.
Box 2 Object 2010.024.002-074
Bendix TOFMS schematics and diagrams; Display booths—PITTCON, Cleveland, 1973; Exterior and component parts of assorted TOFMS models.
Box 3 Object 2010.024.212-321

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