Specification of John Thompson and James George Ingram : caps for feeding bottles.

  • Thompson, John.
Date:
1868
Catalogue details

Licence: Public Domain Mark

Credit: Specification of John Thompson and James George Ingram : caps for feeding bottles. Source: Wellcome Collection.

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    Thompson 8f Ingram's Improvements in Caps for Feeding Bottles. this being the only part of the cap which comes in contact with the contents of the feeding bottle. When the cap has thus been moulded to form it is subjected to heat to effect the vulcanizing process, as is well understood, and after this has been completed the leech bite or other perforations are formed through its top ; we prefer, as above stated, 5 to form them of three straight slits radiating from a point; these are produced in the top of the cap by a cutter or punch suitably formed for the purpose of three radiating blades of thin steel. When using caps of india-rubber thus moulded to form in dies and vulcanized we prefer to form around the neck of the feeding bottle a narrow projecting ring 10 or beading slightly larger in diameter than the interior diameter of the cap, so that after the cap has been drawn over this projecting ring the sides of the cap spring inwards to their original diameter, and so the cap holds firmly on the mouth of the bottle. If desired cloth or fibre reduced to a powder may be mixed with the 15 india-rubber compound from which the cap is moulded, so as to reduce the elasticity of the cap, but this we do not find to be necessary. Having thus described the nature of our Invention, and the manner of performing the same, we would have it understood that what we claim is, the forming caps of feeding bottles, substantially as herein 20 described, from vulcanizable india-rubber compounds moulded to form, in dies by pressure, and subsequently vulcanized or changed. In witness whereof, I, the said John Thompson, have hereunto set my hand and seal, this Twelfth day of January, in the year of our Lord One thousand eight hundred and sixty- 25 nine. J. THOMPSON, (l.s.) LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queens most Excellent Majesty. 1869.