US752230A - Heating apparatus for incubators. - Google Patents

Description

"No. 752,230. PATBNTED FEB. 16,1904.

M. M. JOHNSON. HEATING APPARATUS FOR INOUBATORS.

APPLICATION FILED AUG.17,1003.

I0 XODIZL. Z BHEETB-SHEET 1.

1v- H u Inventor.

No. 752,230. PATENTED FEB. 16, 1904. M. M. JOHNSON.

' HEATING APPARATUS FOR INUUBATORS.

nruonmx nun um. 11. 1903. I0 lonnL. a alums-sum 2.

FIGE,

Invcptor 5 Jaw/1275027.

UNITED STATES Patented February 16, 1904.

PATENT OFFICE.

HEATING APPARATUS FOR INCUBATOFIS- srnolmca'rrom' forming part of Letters 1 mm. No. 752,230,

dated. February 16, 1904.

Application iiloii August 17, 1903. Serial Ko.189,756. (No model.)

To all whom it mrty concern.-

qirovements in hot-water boilers for incuba-.

tors breeders, and the like. v

he ob'ect of my invention is' to improve and simpiify the construction andoperation' of devices of this character, thereby render.- ing them more eflicient in operation and less expensive to manufacture.

With this and other obiects in view the invention consists of certain novel features of construction,combination, and arrangement of parts, as will be more'fullyv described, and particularly pointed out in the appended claims.

In the accompanying drawings Figure lis a top plan view of my improve hotswater boiler, showing it applied to an incubator. Fig. 2 is a vertical sectional view through the same taken on the line 2 2 of Fig. 1. Fig. 8 is a vertical-sectional view taken on theline B 8 of Fig. 1. Fig. 4 is a horizontal sectional view taken on the line 4 4 of Fig. 8. is a detail sectional view taken on the line 515 of Fig. 4.

Re erring to the drawings by numerals, 1 denotes an incubator which consists of the usual outer and inner casings, with a dead-air space between them, an egg-chamber 2, and a hot-waterheater 8 which may be of any well-known- It may be a sys-,' hot-water tank, or,

or preferre construction. tem of hot-water pipes, a as conventionally; represented inthe drawings, a hot-water tan provided with one or more bathe-plates to cause a circulation of the hot water-and with flow and returnpi s 4 and 5, which are in connection with t 0 waterspace of my-improv' boiler 6.

The 'hot-water boiler 6 is preferably rectannarrow space 10 which is closed by the flue 7 is surrounded Fig. 5

gular in form and is disposed longitudinally upon the outside of one end of the incubator. One end of the shell of the boiler is closed by a vertical flue or pipe 7, which is in communication at its center with a horizontal branch flue or pipe 8, which extends longitudinally through the boiler-shell and is secured to the inner side wall of said shell, as shown at 9. This horizontal flue 8 is of less diameter than the width of the boiler-shell, so as to leave a between the .outer side wall of the shell and the said flue, through which space the water must pass, thus causing the latter to be brought more in contact with said flue. As shown in Fig. 2, the flow-pipe 4 of the heater communicates with the water-space in the u per portion of the shell above the flue 8 an adjacent to the vertical flue 7, and the return-pipe 5 is in communication with the lower portion of the shell directly beneath the pipe 4, so that the water will circulate, as indicated by the arrows in Fig. 2. Asuitable flllinginlet 11 is provided on the top of the boiler-shell and is closed by a screw-cap 12.

- The end of the boiler-shell opposite that end a casing or housing 13, which is in the form of a rectangular box having one and open and telescoping over the said end of the shell.

This casinglB is removable to permit of access to the flue 8when it is desired to clean the same,.-and it is of eater width than the width-of .the boiler-s ell, so that spaces 14 will be formed between the sides of the boilershell and. the sides of the casing, which spaces communicate with the discharge end of the flue S-through a space 15, formed between the ends of the shel and its casing, as clearly shown in Fig. 4. The heated air and products .of combustion from the lamp or other heater hereihafter described after passing through 'the flue 8 will pass into the space 15 and then through the spaces 14, which discharge to the atmosphere, as shown. It will be seen that said casing will not only hold the heat a greater len h of time in contact with the boiler-shell, an thus produce a greater heating-surface, but it will also protect the same a ainstdrafts of cold air, as will be readily un erstood.

The chimney or discharge-pipe 16 of a lamp or other heater 17 discharges into the lower end of the vertical flue 7, the upper end of which is closed and controlled by a damper 18, carried by one arm of a lever 19, which is fulcrumcd at 20 between cars 21, secured upon the end of the casing 13. The opposite and shorter arm of said damper-lever is connected by an adjustable link 22 to one arm 23 of a regulating-lever 24, which is fulcrumcd within the egg-chamber 2 and operated by a thermostatic disk 25. The arm 23 of said lever 24 projects. through an elongated aperture or slot in the end wall of the incubator in order to permit said lever to move freely.

In the operation of the apparatus when the temperature within the incubator is normal the upper end of the flue 7 will be closed by the damper 18 and the heat from the lamp will pass upwardly into said flue, then laterally through the horizontal pipe 8, then through the spaces 15 and 14 and discharge to the atmosphere, as previously explained. The water in the boiler being in contact with the flues 7 and 8 and the sides and end of the shell which the heat passes around will become thoroughly heated and produce a circulation through the boiler and the heater 3, as indicated by the arrows inFig. 2. The location of the flue 8 in the boiler between the flow and return pipes 4 and 6 is such that the water must pass around the same at its hottest point, and it will be further seen that the arrangement of said pipes, the flues, and the easing will present a very large heat-radiating surface, and thus produce an'efflcicnt boiler.

When the temperature in the egg-chamber rises above normal, the ex ansion of the disk 25 will impart motion to' t 1e lever 24, which through the link 22 will operate the lever 19 and raise the damper 18 to pcrmit'the heat to pass directly out of the upper end of the flue- The rapid escape of the heat through said flue 7 will cause a suction or draft of cold air through the passages 14 15 and the flue 8,- which will tend to re iidly cool the boiler.

It is thus seen thatt e casing not only serves to hold the heated air in contact with'the boiler-shell and to protect the same against cold air, but also provides means for causing a draft of cold air to be brought in contact with the boiler-shell when it is desired to reduce the 'temperatureof said boiler.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without re- .quiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination with an incubator, of a hot-water conduit located therein, a boiler having a vertical flue at one end and a horizontal flue communicating with said vertical flue, extending longitudinally of the boiler and spaced from the sides thereof, flow and return pipes connecting the conduit with the side of the boiler and respectively communieating with the latter above and below the horizontal flue, and a damper for the vertical flue, substantially as described.

2. A hot-water boiler for incubators and the like, comprising a shell, 0. vertical flue at one end of the same, a horizontal flue communicating with said vertical flue, extending longitudinally from the boiler and spaced from the sides thereof, flow and return pipes respectively communicating with the side of the boiler above and below the horizontal flue, and a damper for the vertical flue, substantially as described.

8. In combination with an incubator and a hot-water conduit therein, a boiler located without the incubator and having a horizontal flue extending therethrough, and a casing on the boiler, into which the horizontal flue discharges, the casing forming return hot-air passages at the sides of the boiler, substantially as described.

4. The combination with an incubator having abet-water conduit and a temperature'regulating device located therein, of a boiler hav ing a vertical flue at one end and a longitudinal flue in eommunination with said vertical flue and dischar ing at the opposite end of said boiler,"flow and return connections between said boiler and said conduit, a spaced casing or jacket upon that end of the boiler at which said longitudinal flue discharges, and a regulating-darnrlFer upon the upper end of said vertical flue apted to be raised by said temperature-regulating device when the temperature in the incubator is above normal to permit of the escape of the heat through the upper end of said flue and to thereby cause a draft of cold air to be brought in contact with the sides and end of the boiler surrounded by said casing, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

MANANDER MOTT JOHNSON.

Witnesses:

Louis C. Faun, HARRY H. JonNsoN.

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