US877586A - Heating apparatus for incubators. - Google Patents

Description

PIATENTED JAN. 28, 1908.

J. L. NIX. HEATING APPARATUS FOR INOUBATORS.

APPLICATION FILED NOV. 23, 1905.

JAMES L. NIX, OF'I'IOMER CITY, PENNSYLVANIA.

HEATING APPARATUS non mcune'roas'.

Specification of Letters Patent.

Patented Jan. 28,1908.

Application filed November 23.1905. Serial No. 288.766.

' To all whom it may concern:

v remedy Be it known that I, JAMEs L. NIX, a citizen of the United States, and resident of Homer City, Pennsylvania, have invented certain new and useful Improvements in Heating.

Apparatus for Incubators, of which the following is a specification.

My invention relates to improvements in heating apparatus for incubators, and has for its object to rovidemeans for the equal distribution of eat throughout the eggchamber of an incubator.

In the drawings-Figure 1 is a perspective view of an incubator embodying the rinciples of my invention, the incubator fieing cut away in vertical longitudinal mid-section. Fig. 2 is a perspective view of the heat-diffusing apparatus. Fig. 3 is a longitudinal vertical view in mid-section of the same.

My invention relates to that class of incubators in which the egg-chamber is heated by radiation from a hot air receptacle, and in which the receptacle is heated by the introduction of fumes from .a lamp, or other suitable heat medium.

In the devices of this character, the fumes are introduced to the heating-receptacle, and

find an outlet from the heating-receptacle to the exterior of the incubator, while between their introduction to the heating-receptacle and their exit \from that receptacle, they serve to heat the metallic bottom of said receptacle, which in turn heats the air within the egg-chamber by radiation. The difiiculty attendant upon this mode of heating has been found to reside mainly in the creation of eddying currents of air within the heatingreceptacle. Where these currents occur,-

*they cause unequal heat distribution, ireto such an extent as to impair or the usefulness of the incubator. To this defect, I have devised the fol- I' provide a heatingquently destroy lowing apparatus.

receptacle, comprising a metallic bottom 5 This heat-receptacle may be horizontal cross-section, as and 3. The flue 7 passes vertically through the bottom 5 and top 6, the top 6 being provided'with an opening 8 for that purpose. The flue 7 is provided and a top 6.

rectangular in with a horizontalfine' 9, which extends into the heating-receptacle 10, and preferably extends to a point beyond the center of the said heating-receptacle 10. The flue 7 is adapted to receive at its lower extremity the .the metallic bottom 5,

through the chimney of the lamp or some other source of heat supply, the fumes from which will, when the top opening 11 of the said flue 7 is closed, pass horizontally'through the flue 9 and bedischarged from the open end of said flue 9 into the heating-receptacle 10. Above I have provided a rigid sheet 12, whose ends are bent over, as indicated bythe numeral 13, in order that the sheet 12 may be elevated a slight distance above the upper surface of the bottom 5, and be parallel therewith. Upon the upper side of the sheet 12, I have provided a housing 13 -inclosingthe flue 9 in the manner shown in the drawings, and being open at its top. The sheet 12 is cut away at the bottom of the housing 13*. The flue 9 is secured within the housing 13 by means of one or more brackets 14. The heating receptacle 10 is also provided with a vertical flue 15 projecting top 6 to the exterior of the incubator, and its loweropening being near to the bottom ofthe heat-receptacle.

By the described apparatus, I have provided ajheating-receptacle having what may be termed a double'bottom, the air-space between the sheets 12 and 5 being exceedingly thin. The heat of the flue 9 causes the air surrounding the flue 9 and within the housing 13 to be first heated. This air being heated, rises and draws after it a supply of colder air through the thin air-space between the sheets 12 and 5. In this manner, the air within the heating-receptacle 10 is in constant motion,

and being compelled to circulate through the thin air-space referred to, the formation of eddying currents isprevented, and a substantially uniform distribution of heat throughout the entire surface of the bottom 5 is accomplished. Q

Having thus described my invention, what I claim as new and desire to have secured to meby the grant'o'f Letters Patent, is:

1. In' a device of the class described, a

heatin receptac1ehavin a metallic bottom,

a meta lic sheet mounte above and parallel with said bottom in such a manner as to leave a thin airspace between the same andsaid bottom, a heatin -flue horizontally disposed u on said metal ic sheet, and a housing dispose around said flue said housing being 0 enat itstop and bottom, said metallic s eet having an opening therein which registers with the open bottom of the housing substantially as described. v

. ing said flue, said housing being openat its I -top and bottom, a metallic. sheet Whereon said housing is mounted said metallic sheet havini an opening therein which registers with t e open bottom of the housin and a metallic receptacle bottom mounted eneath and parallel with said sheet, substantially as 10 described.

,' In testirnony whereof, I h-ave signed my name to this specification, in presence of two subscribing witnesses. 7 JAMES L. Witnesses:

0.. O. WILLIAMS, G. C. HAMILTON.

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