. Artificial incubation and incubators ... rther 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 until the eggs have rolled half over. At thenext recurrence of that hour the rack is drawn back, and the eggsturned back to their first position; the eggs thus are turned twicedaily, whether the attendant is pre
. Artificial incubation and incubators ... rther 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 until the eggs have rolled half over. At thenext recurrence of that hour the rack is drawn back, and the eggsturned back to their first position; the eggs thus are turned twicedaily, whether the attendant is present or not. The absence of any regulating apparatus is, however, a seriousdrawback, and the temptation to neglect the airing of the eggsalmost counterbalances any benefit derived from automaticallyturning them penmans incubator. This is another English invention, and is said to be a very supe-rior machine. Figs. 76, 77 and 78 show different views, and, by areference description, will give a very excellent ideaof the Fig. 77. 1. A wood frame, similar to a table frame, supported by fourlegs, by a screw and nut arrangement, like a piano. 2. An India-rubber cloth waterproof tray, cistern or tank, madefast to the inside face of the frame (No. 1), and resting on a ledgeattached to the same, and on two cross-bars. At each end of thecistern are two outlets (7), communicating with the ArtificialMother underneath, and through which the water flows after hav-ing traversed the upper surface of the eggs. 3. Three (less or more) brass or other metal tubes, to containair, gases, spirits, oils, or any other fluid that can be expanded byheat, extending the whole length of the cistern, and in communi-cation with each other and with the regulator (15, Fig. 76) bymeans of pipe 3 A. 4. Two iron covers for cistern (one out of its position to showinterior of cistern) to retain the heat and steam arising therefrom. 98 penmans incubator* These covers can be utilized for the purp
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectincubat, bookyear1883
