. Artificial incubation and incubators ... rough and primitive construction, and needed frequentlooking after, although a self-regulator. THE NOVELTY INCUBATOR. Fig. 75 shows this really novel Incubator. Its heating appar-atus consists of two tanks, one above the other, with a space oiten or twelve inches between them; from the top of the lowei 96 EUREKA INCUBATOR. tank, at the corners, four tubes led into the upper tank, extend-ing nearly to the upper side; from the bottom of this upper tankfour more tubes led downwards^ discharging into the bottom por-tion of the lower one. The lamp was plac
. Artificial incubation and incubators ... rough and primitive construction, and needed frequentlooking after, although a self-regulator. THE NOVELTY INCUBATOR. Fig. 75 shows this really novel Incubator. Its heating appar-atus consists of two tanks, one above the other, with a space oiten or twelve inches between them; from the top of the lowei 96 EUREKA INCUBATOR. tank, at the corners, four tubes led into the upper tank, extend-ing nearly to the upper side; from the bottom of this upper tankfour more tubes led downwards^ discharging into the bottom por-tion of the lower one. The lamp was placed under the centre of the lower tank, andfrom the construction above described a very complete circulationof water was obtained. The whole was enclosed in a wooden case, with a door throughwhich the egg tray was put in or out, the egg chamber being be-tween the two tanks. Ventilation is provided by holes throughthe sides of the case and a small flue with a check or stop valveon top. On top of the lower tank, and under the egg drawer, are. Fig. 76. placed pans of water, which evaporating, keep the air chargedwith moisture. No regulator is used, the supposition being thata free draft of air would prevent any overheating of the eggs dur-ing the time the machine was left alone, which was placed at fourto six hours. In theory this seemed very plausible, but in prac-tice it was found that in warm weather, or in a room of variabletemperature, it required almost hourly attention. CAMPBELL/S EUREKA INCUBATOR has one feature about it that deserves mention. In general ap-pearance and construction it is a little like Christys Hydro(illustrated further on), but the egg tray or slide has on it a rack,between the partitions of which the eggs are laid. This rack isconnected with a clock movement, which is in turn connectedwith a clock similarly to an alarm attachment; the pointer is setat any specified hour, and when that time arrives the rack is PENMAN S INCUBATOR. 97 pushed slowly along unt
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectincubat, bookyear1883
