Specification of William Robert Lake : feeding bottles.

  • Lake, William Robert.
Date:
1875
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Robert Lake : feeding bottles. Source: Wellcome Collection.

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    Provisional Specification. A.D. 1875.—N° 1899. 3 Lake's Improvements in Feeding Bottles._ Third. To the extremity of this india-rubber tube is tightly fitted a small union joint l9 Figure 6, of pewter or other suitable material, con¬ taining the retaining valve. This union is perforated throughout its length. One end is properly formed to receive the valve, and the other 5 is split to retain the caoutchouc spring n. Fourth. This second valve m9 Figure 2, called the retaining valve, is similar in respect of its form and setting to the first valve above described. I will here again remark that this method of attachment permits the easy regulation of the tension of the spring n by pulling its 10 end and causing the thread to slip in the slit till the valve comes to its seat, and it will lift with the weakest effort of suction. Fifth, and finally. A teat p> Figure 8, of caoutchouc is tightly fitted upon the extremity of the union at the end containing the valve. This teat is furnished with a disc o of ivory or bone to regulate its entrance 15 into the infant’s mouth. It has this peculiarity, namely, instead of being perforated with one small round hole, like other teats, it is simply slit crosswise. This slit is kept closed by the elasticity of the caout¬ chouc, and is opened by pressure, so that it forms in a measure a third valve. By this arrangement the suction tube is provided with two valves, 20 and the whole forms a true suction pump, which will act perfectly by • t *— — pressure on the teat. v SPECIFICATION in pursuance of the conditions of the Letters Patent, filed by the said William Robert Lake in the Great Seal Patent Office on the 18th November 1875. 25 TO ALL TO WHOM THESE PRESENTS SHALL COME, I, William Robert Lake, of the Firm of Haseltine, Lake, & Co., Patents Agents, Southampton Buildings, London, send greeting. WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters Patent, bearing date the Twenty-fourth day of May, in the 30 year of our Lord One thousand eight hundred and seventy-five, in the thirty-eighth year of Her reign, did, for Herself, Her heirs and successors, give and grant unto me, the said William Robert Lake, Her special licence that I, the said William Robert Lake, my executors, admini-