Vintage Dairy Lab Glassware

Mojonnier sample bottles

• Mojonnier sample bottle variants:
• Early version - "MOJONNIER" (all uppercase) in 'ribbon' across shield; "PATENT PENDING" (all uppercase) along bottom of front of bottle (beneath shield).
  

  "PATENT PENDING" Mojonnier bottle	crayon rubbing of "PATENT PENDING" Mojonnier bottle

  
  
• "MOJONNIER" (all uppercase) in 'ribbon' across shield; "PATENTED APRIL 5 1921" (all uppercase) along bottom of front of bottle (beneath shield).
  

  "PATENTED APRIL 5 1921" Mojonnier bottle	crayon rubbing of "PATENTED APRIL 5 1921" Mojonnier bottle

• "Mojonnier" (mixed case; script typestyle) in 'ribbon' across shield; "PATENT NO. 57479" (all uppercase) along bottom of front of bottle (beneath shield).

  "PATENT NO. 57479" Mojonnier bottle	crayon rubbing of "PATENT NO.  57479" Mojonnier bottle

• frosted/etched marking spot (backside)
• ceramic enamel marking spot (backside)
• Design for a Bottle - U.S. design patent No. 57,479 (D57,479; filing date: May 3, 1920; issue date: Apr 5, 1921).
• Mojonnier Bros. Co. print advertisement (Acrobat PDF) - bottom half-page ad from the Journal of Dairy Science, Vol. 37, No. 12 (December 1954).  Among the advertised products are the following:
• Mojonnier sample bottles - all with attached rubber stoppers and having "etch spots" (etched marking spots).
•   G-400 -   4 oz. (¼ pint;   7-day tests)
•   G-800 -   8 oz. (½ pint; 15-day tests)
• G-1600 - 16 oz. (1 pint; 30-day tests)
• Snap-on rubber bottle cap/closure with connector (M427) - can be used instead of rubber stopper closure on Mojonnier sample bottles.

Babcock centrifuge bottles

• Historical Background
• Babcock, S. M.  1890. A new method for the estimation of fat in milk, especially adapted to creameries and cheese factories. In: Seventh Annual Report of the Agricultural Experiment Station of the University of Wisconsin, Madison, pp. 98-113.  [Google books]
• Babcock, S. M.  1890. Investigations relating to the composition of milk. In: Seventh Annual Report of the Agricultural Experiment Station of the University of Wisconsin, Madison, pp. 114-119.  [Google books]
• Hart, E. B. 1949. Stephen Moulton Babcock (October 22, 1943 - July 2, 1931).  Journal of Nutrition 37(1):1-7.  [a biographical sketch]
• Shaw, R. H. 1917. Chemical testing of milk and cream. U.S. Department of Agriculture, Bureau of Animal Industry.  Government Printing Office, Washington.  [can be read online or download PDF at archive.org]
• Hunziker, O. F. 1917. Specifications and directions for testing milk and cream for butterfat. Journal of Dairy Science 1(1):38-44. [download as PDF]
• Types
• Milk (commonly graduated 0-8%)
• Cream (commonly graduated 0-50%)
• Skim milk (double-necked: 1 sample filling neck, 1 graduated, quantifying neck; commonly graduated 0-5%)
• Others
• An early manufacturer/supplier of Babcock bottles was Louis F. Nafis, Inc. Scientific Dairy Laboratory Glassware. 
• An obituary for Louis F. Nafis (PDF) published in the Journal of Dairy Science, Vol. 38, No. 4 (April 1955).
• In 1932, Louis F. Nafis, Inc. was acquired by Kimble Glass Co.  Here are some print advertisements from the Kimble Glass Co. for Babcock bottles and related dairy laboratory glassware.
• Babcock bottles (cream & milk) and sampling pipettes (note the "K NAFIS USA"  marks on the Babcock bottles) [PDF ad in Journal of Dairy Science, Vol. 26, No. 3 (March 1943)].
• Babcock bottle (milk) and floating pasteurizing thermometer (note the "K NAFIS USA" marks on the Babcock bottle) [PDF ad in Journal of Dairy Science, Vol. 26, No. 5 (May 1943)].
• Babcock bottle (cream; note the "K NAFIS" marks) [PDF ad in Journal of Dairy Science, Vol. 29, No. 12 (December 1946)].
• Babcock Bottle Racks
• Wooden
• MILK-TEST-BOTTLE-RACK - U.S. patent No. 806,819 (filing date: Jun 30, 1905; issue date: Dec 12, 1905).
• Photo of a 24-bottle rack (as depicted by the diagram of a 24-bottle rack in U.S. patent No. 806,819, mentioned above;  although no photographs are available, the author has seen a 36-bottle rack of this design).
• Babcock bottle centrifuges
• Milk Tester - an early handcrank powered, 2-bottle centrifuge - U.S. patent No. 734,725 (filing date: Apr 7, 1902; issue date: Jul 28, 1903).
• Centrifugal Testing-Machine - Patent number: 1,321,288 (filing date: Oct 26, 1918; issue date: Nov 11, 1919).
• Centrifugal Tester - U.S. patent No. 2,628,773 (filing date: Oct 21, 1947; issue date: Feb 17, 1953)
• Fat Testing Centrifuge - U.S. patent No. 3,379,370 (filing date: Sep 29, 1966; issue date: Apr 23, 1968)