US1652120A - Incubator - Google Patents

Description

' 1,652,120 m. M. HQLBRQQK y L INCUBATOR Filed Aug. 20. M325 `2 Shee-S-Sheec 2 Eggs@ m /MZ 'o yas Patented ti, lQlZ'.

DAVZD lill.

HOLBROK, OF ORTLANID, OREGON.

IENC'UBATOR.

Application filed August 20, 1925. Serial No, 551,427.

rllhe invention relates to improvements in incubatore, and its object is to provide new and improved electrical heating means embodyingheating coils and uniquesupportingmeans therefor, the latter being of a nature to prevent direct downward rad1- ation of heat onto the eggs.

"With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompany ing drawings. i

Figure l is a longitudinal sectional view through an incubator constructed in accordu ance with my invention.

Figure 2 is a horizontal sectional view on line 2-2 of Figi l, looking in the direction of the arrows, and this view indicates by the line 1-l, the planes on which Fig. l is cut.

Figure 3 is au enlarged detail longitudinal sectional view as indicated by line 3#3 of Fig. Q.

Figure a is a vertical transverse sect-ion on line iw-ll of lfig. l.

Figure 5 is a diagram showing the heating coils and wiring, together with a thermostatic switch therefor.

ln the drawings above briefly described, the numeral l designates an incubation chamber which may be of any known or preferred construct-ion, the chamber herein disclosed, being provided with a. plurality of egg trays 2.

Projecting downwardly from the top of the chamber l, l have shown a plurality of binding posts 3 which are preferably provided with prongs 4l. driven into said top. 'llhese binding posts may be at any desired locations, according to the positions 'to be occupied by the heating coils 5, which coils have their ends detachably mounted by said posts. Suitable conducting wires 6 may connect adjacent ends of the coils as may be necessary, and the main feed wires. 8 are in electrical connection with two of the posts 3, the upper ends of the latter having aule iliary posts 9 to which the wires are clamped. included in the circuit at any desired point, is a thermostatic switch l() of an v adequate construct-ion.y

Horisontally disposed extend longitudinally under the coils 5 and are provided with channels l2 in which said coils are received, said bars being supported insulating` bars ll by screws i3, by staples la, or in Apractically any other desired manner. The supporting means for the bars are preferably driven into the top of the chamber l in a manner permitting their removal whenever it is necessary to gain access to any of the coils 5, for instance, for replacing or repairing. rlhese bars not only prevent the intermediate portions of the coils from sagging, but they prevent direct downward radiation of heat onto the eggs from said coils, producing a more eliicient distribution of the heat in the chamber. ritt this point, it may be stated that by preference, the coils 5 near the walls of the chamber l, contain more wire than those at the central portions, thus providing for more heat around the walls, where needed.

Extending through the back wall of the chamber l, above the'egg trays 2, l have shown a number of fresh air inlet tubes l5, said tubes being equal in number to the trays :2 and having their inner ends disposed substantially over the centers of these trays. assing through the top of the chamber l, are a number of air outlets 16 which are also preferably disposed one over each tray 2, the combined air conducting capacities of the outlets lil being about the same as the combined capacities of the tubes l5. Slides or the like 17 are provided for closing the outlets 16 for a purpose to appear. The bottom of the chamber l is formed with groups of auxiliary air inlet perforations 18, one group being disposed under each of the trays 2. 'Ehe combined conducting capacities of all of the perforations 18 are considerably less than the combined con ducting capacities of the main air inlet tubes l5. Hence, as long the slides 17 are open, verylittle air will enter through the perforations 18, but an abundance of fresh air will enter through the tubes l5 and this air will escape through the outlets 16, it becomes heated. rlhis rapid circulation of air is used almost entirely While the areA in the incubator. During the first few days of the hatch however7 the top slides should be closed. Then, fresh air in relatively small quantities enters through th'eperforations 1S, slowly circulates in the chamber l, and escapes through the tubes l5, providing the desirable ventilation during the hatching period. ltmay be further explained that the perforations i8 serve to supply fresh air lill CJI

to the nursery 19, insuring that the chicks shall obtain a healthy start in lite.

For lsupplying the necessary humidity to the chamber l, I have provided a Water tank 2O Which is preferably 'elongated horizontally, said tank having longitudinal slots 2l in its sides, through Which moisture can escape into said chamber'. This tank is equipped with an upstanding neck 22 which passes through and is secured to the top l, the upper end of said neck being equipped with ,a slide or the like 23. When this slide is closed, moisture escapes from the water tank through the slots 2l into the chamber l. When the slide is open however7 moisture `escapes through the neck 22 and is not supplied noticeable `(piantity to the chamber.

y properly regulating the slide or the like, the "desired lnirnidity Within the chamber ,may be readily obtained- The Ventilating :and humidii'ying herein disclosed, constitute no parts invention ,claimed in this application.

I claim:`

In a heating means for au incubation chamber, one pair of heating coils disposed in axial alinement with each other under the top ofthe chamber, a second pair of axially alined coils `similflrly disposed and positioned in parallel relation with the coils of the lirst named pair, binding posts secured to the chamber top `and detachably anchoring the inner and outer ends of the coils of the first means ot' the and second mentioned pairs, third and fourth pairs ot coils extending transversely between the outermost of the aforesaid binding posts and having their outer ends detachably held thereby, additional binding posts secured to the chamber top and detachably holding the inner ends of the coils ot said third and fourth pairs, a ii'lth pair of axially alined coils disposed between and parallel with the iirst and second named pairs, binding posts to which the Lends of the coils oit said fifth pair are detachably connected, an eleventh coil between the `irst and second named pai ot' Acoils end parallel therewith, binding posts to which the ends of said eleventh coil are dctachably connected, transverse connectors between these binding posts vand those at ,the outer ends of said fifth pair of coils, trans verse connectors between the binding posts at the inner ends of said lfifth pair iof coils and the binding posts et the inner ends of the first named pair oi' coils, and current feed wires connected to the binding posts at the inner ends ot' the second pair of coils, the coils oi'' said liifth pair containing less Wire than fthe coils ortl the lirst or second .named pairs, said eleventh coil also containing less Wire than either `the jliist or second named pairs ot' coils.

In testimony whereof I have hereunto affixed my signature,

DAVID M. HOLBROOK.

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