Search Results
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2 items
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Guide to replacing absorption cell windows in Beckman IR spectrophotometer
- 1949-Mar-17
The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…
- Creator Of Work Beckman Instruments, Inc.
- Subject Scientific apparatus and instruments, Spectrophotometer, Infrared spectroscopy, Beckman Instruments, Inc.
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7 items
Patent for Hydrogen Tube
- 1949-Mar-08
Patent #2,463,743 for a hydrogen tube designed by H. Howard Cary and Warren Baxter during their time at National Technical Labs, a precursor to Beckman Instruments. This tube was designed for use in UV…
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3 items
Association of New York Scientists Newsletter, March 5, 1949
- 1949-Mar-05
- Creator Of Work Association of New York Scientists
- Subject Association of New York Scientists, Newsletters
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Model G pH meter cable assembly diagram
- Dwg. No. 662-000740
- 1949-Feb-08
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting instrument kicked off…
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V.F. Kurowsky operating flow measuring device at Hercules Parlin plant
- 1949-Jan
Close-up view of V.F. Kurowsky operating a flow measuring device used to identify and control the ratio of base material to plasticizer in cellulose molding compounds produced in the Plastics Laboratory at the Hercules…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Employees, Chemical industry, Scientific apparatus and instruments, Research, Industrial, Hercules Incorporated, Corporations, Cellulose, Kurowsky, V.F.
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V.F. Kurowsky operating flow measuring device at Hercules Parlin plant
- 1949-Jan
Close-up view of V.F. Kurowsky operating a flow measuring device used to identify and control the ratio of base material to plasticizer in cellulose molding compounds produced in the Plastics Laboratory at the Hercules…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Employees, Chemical industry, Scientific apparatus and instruments, Research, Industrial, Hercules Incorporated, Corporations, Cellulose, Kurowsky, V.F.
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Tumbling shaker at Hercules Parlin plant
- 1949-Jan
Close-up view of a tumbling shaker used in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey to dissolve plastic materials in solvents. Per notations accompanying the photograph, the…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Viscosity--Measurement, Chemical industry, Polymers--Viscosity, Scientific apparatus and instruments, Research, Industrial, Hercules Incorporated, Corporations, Cellulose, Viscosity
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Testing of cellulose materials at Hercules Plastics laboratory
- 1949-Jan
Close-up view of operator Felix Nakielny removing a test piece from an injection mold apparatus used in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey. Per notations accompanying the…
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Take-off jig at Hercules Parlin plant
- 1949-Jan
Close-up view of the take-off jig used to control extruded shapes on a National Rubber 2-inch extruder in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey. The employee visible in the…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Chemical industry, Extrusion process, Hercules Incorporated, Corporations, Cellulose, Machinery, Ethylcellulose
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L.F. Strugala using two-roll mill at Hercules Parlin plant
- 1949-Jan
Close-up view of operator L.F. Strugala using a two-roll mill in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey. Per notations accompanying the photograph, the two-roll mill was used…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Employees, Chemical industry, Research, Industrial, Hercules Incorporated, Corporations, Cellulose, Machinery, Strugala, L.F.
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L.F. Strugala using two-roll mill at Hercules Parlin plant
- 1949-Jan
Close-up view of operator L.F. Strugala using a two-roll mill in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey. Per notations accompanying the photograph, the two-roll mill was used…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Employees, Chemical industry, Research, Industrial, Hercules Incorporated, Corporations, Cellulose, Machinery, Strugala, L.F.
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J.P. Drew operating milling cutter at Hercules Parlin plant
- 1949-Jan
Close-up view of J.P. Drew operating a milling cutter used in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey. Per notations accompanying the photograph, the cutter was used to cut…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Plastics, Employees, Chemical industry, Research, Industrial, Hercules Incorporated, Corporations, Cellulose, Machinery, Plastics--Testing, Drew, J.P.
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J.P. Deran working with molded cellulose materials at Hercules Parlin plant
- 1949-Jan
General view of operator J.P. Deran removing injection molded cellulose materials from a 4-ounce Reed Prentice molding apparatus at the Hercules Powder Company plant in Parlin, New Jersey. Per notations accompanying the…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Plastics--Molding, Employees, Chemical industry, Research, Industrial, Hercules Incorporated, Corporations, Injection molding of plastics, Machinery, Cellulose, Deran, J.P.
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Insulated test chamber in Hercules Plastics laboratory
- 1949-Jan
General view of an insulated test chamber used in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey to determine the impact resistance of plastics at sub-normal temperatures. Per…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Plastics, Chemical industry, Scientific apparatus and instruments, Research, Industrial, Hercules Incorporated, Corporations, Cellulose, Plastics--Testing
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Felix Nakielny working with dimensional stability test cabinet at Hercules Parlin plant
- 1949-Jan
General view of employee Felix Nakielny removing a toilet seat cover from the dimension stability test cabinet used in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey. Per notations…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Plastics, Employees, Chemical industry, Scientific apparatus and instruments, Research, Industrial, Hercules Incorporated, Corporations, Cellulose, Plastics--Testing, Nakielny, Felix
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Extruder in use at Hercules Parlin plant
- 1949-Jan
Close-up view of an extruder in use in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey. Extruders were commonly used to process and shape a variety of raw materials produced at the…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Chemical industry, Extrusion process, Hercules Incorporated, Corporations, Cellulose, Machinery
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Extruder in use at Hercules Parlin plant
- 1949-Jan
Close-up view of the take-off jig used to control extruded shapes on a National Rubber 2-inch extruder in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey. The employee visible in the…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Employees, Chemical industry, Extrusion process, Hercules Incorporated, Corporations, Cellulose, Machinery, Ethylcellulose
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2 items
Employees working with General Electric Recording Spectrophotometer
- 1949-Jan
Two views of a General Electric Recording Spectrophotometer in use in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey. The employee visible in the first photograph is identified as…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Employees, Chemical industry, Scientific apparatus and instruments, Research, Industrial, Hercules Incorporated, Corporations, Spectrophotometry, Stoltenberg, R.A.
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Employee using extruder at Hercules Parlin plant
- 1949-Jan
Close-up view of an unidentified employee pouring raw material into the hopper of an extruder in the Plastics Laboratory at the Hercules Powder Company plant in Parlin, New Jersey. The material is subsequently extruded…
- Creator Of Work Hercules Incorporated
- Photographer Rittase, William M., 1894-1968
- Subject Employees, Chemical industry, Extrusion process, Hercules Incorporated, Corporations, Cellulose, Machinery
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Letter from Percy L. Julian to Bernhard Witkop
- 1949-Jan-05
Concerns Robert B. Woodward's synthesis of methochloride of sempervirine. Also discusses an error made by Julian in the lab and communicated to Witkop in an earlier letter.