. Artificial incubation and incubators ... eld by a spring acting lengthwise with the rod; thisend is attached to the lower end of a lever, which, extending up-wards through an opening in the tank, connects with the wires otan electric battery? This battery is used in connection with aclock-work, similar in-principle to that of the Eclipse. The ex-pansion of the rod as the heat rises, closes the electric circuit, 92 WATERHOUSE S INCUBATOR. which, acting upon the magnet, sets the clock in motion, openingthe ventilator and turning down the light. As the rod contractsunder the lowering of the hea
. Artificial incubation and incubators ... eld by a spring acting lengthwise with the rod; thisend is attached to the lower end of a lever, which, extending up-wards through an opening in the tank, connects with the wires otan electric battery? This battery is used in connection with aclock-work, similar in-principle to that of the Eclipse. The ex-pansion of the rod as the heat rises, closes the electric circuit, 92 WATERHOUSE S INCUBATOR. which, acting upon the magnet, sets the clock in motion, openingthe ventilator and turning down the light. As the rod contractsunder the lowering of the heat, the reverse action follows. Although it is such a perfect machine, but very few of themare in use; the complication of the electric attachment proving abar against its popularity; and the unevenness of the heat in theunnecessarily large egg chamber, preventing as good results inhatching, as has been attained with a number of other styles ofIncubators. waterhouses incubator. This is a Connecticut invention. In general appearance it is a. Fig. 73. little similar to Jaques Incubator; the sides of the case however,are built up of either paper or wood. The eggs rest in a basin-shaped pan in the centre of the cylindrical case, around the outeredge of which is a space for the entrance of the hot air from thelamp chamber. In the latter is a reservoir of water, to providemoisture for the air. Over the egg-basin is a circular glass plate,through which can be seen the eggs and the thermometers whichlie on top of the eggs. Above and to one side is a flue, openinginto the outer air; in this flue is a pivoted damper or valve. Theregulator is a copper rod, firmly fastened at one end and free atthe other, which is connected with the short arm of a nicely ad-justed lever, the other arm of which is connected with the damp-er above mentioned; when the chamber gets too hot, the expan-sion of the copper rod, is supposed to act on the lever with suffici-ent force to cause the damper to open, thus
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectincubat, bookyear1883
