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Mojonnier milk testing bottle
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Object ID 001258

Object Name Mojonnier milk testing bottle

Object Desc A clear empty glass milk testing bottle with rubber cork manufactured by the Mojonnier Bros. Company.

Collection General Collection

Accession # CMY001077

Alternate ID

General Category History

Category Dairy


Source Category Found In Collection

Accession Date JAN 1,1991


Location Room 4, Shelf 20

Object Date

Start Year Range

End Year Range

Status On-Site Collection Storage

Object Keywords Mojonnier Bros. Co.,bottles,dairy,farming,milk,

Title Mojonnier milk testing bottle

Description A clear empty glass milk testing bottle with an attached rubber cork that was manufactured by the Mojonnier Bros. Company. The rubber cork is black and has embossed writing on the top of it and the strap attached to the glass bottle. "Mojonnier Chicago. Pat. Pend." The bottle has embossed writing on one side. There is a shield with the name "Mojonnier" written diagionally across it. Then at the lip of the bottom of the bottle is says "Patent no. 57479."


Approx Collection Date

Height 6.25

Length 0

Width 0

Depth 0

Diameter 3.25

Circumference 7.5

Weight 0

Unit of Measure Inches/ounces

Dimension Details 1.25" in diameter for the rubber cork. 5.5" is the neck circumference.

Quantity 1



Site Details

Place of Origin

Maker Mojonnier Bros. Company

Maker Details Composite milk samples were taken over several days to save having to run tests every day. Dairymen were paid on the amount of fat in their milk. Creameries took a sample of a dairyman's milk and tested it for the fat content and then paid them based on the results of that test. The Mojonnier composite sample bottles were used for these samples and are quite common. The design was patented on April 5, 1921 by Julius John Mojonnier of Oak Park, Illinois and he assigned the patent to Mojonnier Bros. Company of Chicago, Illinois. The original bottles had a rubber stopper held on by a non rusting, metal chain. It was important that the bottle seal tightly because if any water evaporated the fat test would be artificially increased. Later the chain was dropped and the rubber cork was held to the bottle by a rubber strap.

Maker Mark


(click for full image)

Image Caption CMY001077



Date JAN 17,2014

Summary Excellent

Assessor Brooke Uhl

Notes The cork has some minor edge wear, but otherwise is great condition.


Date JUL 24,2014

Summary Location change

Notes Location changed to Room 4, Shelf 20 from Room 9 - automatic entry by admin