US782114A - Incubator. - Google Patents

Description

No. 782,114. PATENTBD FEB. 7, 1905. K. R. DUNTON.

{ IN GUB ATOR. urmoumn FILED r23. s. 1903.

Patented February '7, 190B.

NTTED STATES PATENT OFFICE.

KERVIN R. DUNTON, OF SOMERVILLE, MASSACHUSETTS,ASSIGNOR TO THE CORNELL INOUBATOR MFG. CO., OF ITHAOA, NEW YORK.

INCUBATOR,

SPECIFICATION forming part of Letters Patent No. 782,114, dated February 7, 1905.

- Application filed February 5, 1903. Serial No. 141,984.

T of] lw/mm/ it 'mmy con/corn:

Be it known that I, KERVIN R. DUNTON, a citizen of the United States, residing at the city of Somerville, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Incubators, of which the following is a specification.

My invention relates particularly to improvements in incubators in which a door through the side or other wall of the incubator is used for access to the egg-chamber.

The objects of my invention are, first, to provide a door with double walls and air-space between and which will be light and inexpensive and at the same time eflicient and durable; second, to provide a door which with suitable adjacent construction will have the same temperature of air within it as between the walls of the incubator. by the construction illustrated in the accompanying drawings, in which Figure 1 is a perspective of the front double walls of an incubator or refrigerator and showing the door-opening and the air-space between the double walls. Fig. 2 is a similar perspective with door partly open. Fig. 3 is a perspective view of the door detached. Fig. 4. is a section through A B of Fig. Fig. 5 is a detail view showing the construction of the door.

Similar figures refer to similar throughout the several views.

The double walls 1 2 of an incubator are shown in Figs. 1 and 2 with space 3 between them, which in an incubator is usually left vacant for the circulation of air, but which may also be left as an air-space. In the ordinary construction heretofore this space is walled off around the door-opening 4:, so that there is no communication with the dooropening. In my construction there is preferably communication with this air-space at and around the door-opening, as indicated at 5, the advantages of which will be hereinafter stated.

The door 6 is built with double walls and an air-space 7 between with various openings 8 through the edge of the door, affording free communication with such air space. The

parts 1 attain these objects simplest construction is shown in Figs. 3 and t, in which the two walls 9 10 are separated the requisite distance to correspond in extreme thickness to the extreme thickness of the side in which the door is used by the corner-blocks 11, which for the ordinary size of an incubator-door are sutlicient. In larger doors other blocks 12, intermediate the sides and ends, may be used. The walls of the door are made with a bevel or taper edge 13 1%, the inner wall being the smaller, so that the door will open more readily and shut tight. This particular feature is not new as applied to doors with solid or closed edges. To make the door air-ti ht when closed, a strip of felt, rubber, or other suitable material 15 is countersunk in the edges of each wall of the door and projects beyond said edges.

\Vhen the door 6 is closed and is constructed as above described and the door-opening at around its margin is open to the space 3, it will readily be seen that there is then continuous air-space and communication between the walls of the front of the incubator, including the door. In fact, such communication is practically as continuous and uninterrupted as it the walls of the door were intogral with the walls of the rest of the incubator. This insures the same temperature of walls around all parts of the egg-chamber, which is an important consideration, especially if, as is done in some incubators, a circulation of air is maintained or provided for in such space between the walls of the incubator.

1 am aware that doors with air spaces, chambers, or pockets therein, but not communicating exteriorly, have been heretofore used in safes, refrigerators, and the like, but that is. not my construction and I do not claim it.

\Vhat I do claim, however, and desire to secure by Letters Patent, is

1. In combination with the walls of an incubator, of a door therefor, comprising a plurality of walls, each wall comprising a frame having a central openin transparent means secured to said frame and closing said opening, said frame provided with beveled edges,

countersunk in and extending the entire 5 length of said edges and projecting beyond the same, and an approximately rectangular spacing-block of rigid materialsecured near each corner of and interposed between said Walls for retaining the same in an assembled 2 stationary position.

In testimony whereof I affix my signature in presence of two Witnesses.

KERVIN R. DUNTON.

Witnesses:

S. E. BEAN, HERBERT WV. DoToN.

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