Improvements in the manufacture of moulds for rubber teats / [Martin Dunphy Armstrong].

  • Armstrong, Martin Dunphy.
Date:
1901
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in the manufacture of moulds for rubber teats / [Martin Dunphy Armstrong]. Source: Wellcome Collection.

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    Improvements in the Manufacture of Moulds for Rubber Teats. and at a very moderate cost as compared with the inferior metal moulds hitherto employed. The internal corrugated surface of the rubber teats made on such glasa moulds is more perfectly smooth and polished and is much less subject to acci¬ dental flaws caused by adhesion when the teats are being stripped off the mould 5 or otherwise than are those made on metal moulds, and by reason of such higher polish and freedom from flaws !are more easily kept clean and free from decom¬ posing milk or other matter, thus facilitating the proper feeding of children upon purely aseptic principles, and are consequently better for the health of the infant using them. 10 Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed we declare that what we claim is: (1) The method of producing glass moulds for making rubber teats with internally corrugated or ribbed surfaces substantially as hereinbefore described. 15 (2( As a new article of manufacture, blown glass moulds produced in a matrix formed as hereinbefore described for making rubber teats with corrugated or ribbed internal surfaces. (3) A matrix such as described, for the production of glass moulds for rubber teats with internal ribs or corrugations, which matrix has a highly polished sur- 20 face partly due to the compression of the metal caused by the driving in of the punch substantially as and for the purposes hereinbefore set forth. (4) For the production of glass moulds for rubber teats with internal ribs or corrugations the use of a hardened steel punch or male to produce a matrix in which the glass moulds may be blown substantially as hereinbefore described 2a and illustrated in the drawings, Dated the 9th day of August 1901. JOHF DOWELL M. D. ABMSTBONG liedhill: Printed for His Majesty's Stationery Office, by Malcomson & Co., Ltd—1901.