On conditions necessary to obtain a clean milk supply and on methods of testing cows' milk in relation to standards of cleanness : report to the Sub-committee on clean milk / by S. Delépine, June 16th, 1918.

  • Delépine, Sheridan, 1855-1921.
Date:
1918
Catalogue details

Licence: In copyright

Credit: On conditions necessary to obtain a clean milk supply and on methods of testing cows' milk in relation to standards of cleanness : report to the Sub-committee on clean milk / by S. Delépine, June 16th, 1918. Source: Wellcome Collection.

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    Plate VII. Milk Churns and details of Milk Churns and Pails. A—Ordinai’y milk churn very faulty. B—Improved milk churn (would be better if seamless). C—Faulty handle and lid of a milk can. I)—Faulty handle of a milk pail. E—Faulty angular joint at bottom of milk pail or churn. F— ” 5? n ?5 if G—Form of seam which not infrequently harbours dirt. 1— Ventilating device allowing penetration of dust and sometimes of the polluted rain w^ater collected by the funnel-shaped opening of the churn. 2— Locking arrangement difficult to clean. 3— Angular joint between bottom and side, or other parts, of churn or can difficult to clean and to sterilize. 4— 8eam which wdien not tinned carefully is a receptacle for dht. 5— Rivetted parts. The rivets, even wTien well bedded in and covered w ith tin, produce unevenness. When carelessly tinned they provide recesses for dirt. 0—Rim of pail, can, or chuih, strengthened by iron wore. The S])ace left betw^een the wore and the turned-ove]’ edge is often left unprotected against dirt through imperfections in the finish. 7— Handle w hich wTien wet and dirty is a source 'of contamination by draining on fo the edge of, and then into, the pail. 8— Rounded corners of can and lid, wothout scam, and easy to clean. 9— Well-finished rim (space betAveen edge and side of neck AA^ell filled Avith tin (black) ). 10—Flange protecting mouth of can against dust and rain.