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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    Lake's Improvements in Feeding Bottles. works equally well. It consists of a small caoutchouc cap slit at the bottom. This cap is introduced into the lower opening of the glass tube; the edges which project serve in place of the cushion ring j in Figures 1 and 2, to prevent injury to the tube by blows, and the bottom of the said cap opens to permit the liquid to rise, and closes to prevent 5 its descending. It is evident that the same result might be attained by the employment of other valves, either ball or flap valves, or others. For instance, I may have a ball valve s arranged as in Figure 9 to close the upper extremity of the glass tube, and with its thread spring n attached to the cushion collar j at the other extremity of the said tube. 10 And it is obvious that the form of the parts and the material used in their construction are unimportant, and I may employ any suitable form of valve, and place the same in any convenient part of the suction tube, and employ any material that I find most convenient and the best adapted to my purpose. 15 Fourthly. The Teat Slit.—This is a very important feature of my Invention, for I obtain with this alone the effect of a valve. With this teat, combined with one of the retaining valves above described, I obtain a true pump, whose action is caused by pressing the teat. Furthermore, this arrangement prevents obstruction; the slightest clot 20 of milk is sufficient to obstruct the hole of ordinary teats used for this purpose, while in mine it passes through the slits, which open more or less according to the pressure. If the teat is squeezed the slits open and permits the escape of the air contained in its cavity. When it is released the slits close, and the teat in swelling by its own elasticity 25 draws the liquid from the bottle, which rises and lifts the retaining valve. If the pressure is renewed the liquid, not being able to return because it is held by the retaining valve, escapes by the slits of the teat, and so on, consequently the infant need make no effort of suction to drink, but need only press the teat against his gums. If he draws he drinks, if he 30 does not draw he drinks all the same the moment he bites the teat. The action may be readily ascertained by pressing the teat several times between the fingers; the liquid will spirt after the pressure has been five or six times repeated. In using another feeding bottle the sucking will cause the milk to 35 rise, and cessation of sucking will allow the milk to descend, therefore a continuous sucking effort is necessary in drinking. Newly-born infants using the bottle draw in a jerking manner, causing the milk to rise, and
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