US1636634A - Incubator ventilating means - Google Patents

Description

Patented July 19, 1927.

UNITED {STATES DAVID M. -HOLBROOK, or PORTLAND, onn'eon.

inounn'ro'n VENTILATING MEANS.

Application filed August 26, 1926. sci-m1 No. 131,707.

The invention aims, to provide a new and iHIPTOYGCl ventilatingmeans for incubators, in which novel provision is made for regulating the amount of fresh air entering the same, or for entirely cutting oil such entrance of air if desired.

lVith the foregoing in View the invention resides in the novel subject matter hereinafter described and claimed.

Figure l is a longitudinal section through an incubator embodying my invention.

Figure 2 is a horizontal sectional view on line 2-2 of Figure 1.

Figure 3 is a vertical transverse section on line 3-3 of Figure 1.

In the drawings above briefly described, C designates the casing of an incubator having the usual trays T, dividing it into an upper hatching compartment H and a lower 510 or brood compartment B.

Extending from the exterior to the interior of the casing, at. suitable locations above the trays T, are a number of horizon-7 tal tubes 5, said tubes preferably passing through the rear wall of the casing C and extending toward the front of the latter,'butterminating in spaced relation with said front. Thesetubes are open at both ends and they may be secured in place in any desired manner, within the openings 6 formed for their reception.

Slides 7 engage the front ends of the tubes 5, said slides being each preferably formed from a sheet metal plate transversely curved into channel form. The outer or front ends of these slides have disks 8 secured thereto and when said slides are tele-' scoped with the tubes 5 to the maximum, said disks close the inner ends of said tubes 40 to prevent entrance of outside air. The

slides however may be forwardly or inwardly moved into numerous spaced relations with the inner ends of the tubes 5, so that air entering said tubes may be received in the channel shaped slides and may discharge through the open sides of the latter.

These slides preferably open upwardly so that the incoming air Will not immediately descend upon the eggs, but must first pass V 5 upwardly over the edges of the slides, so

that itwill become preheated. However, the slides may be rotated to discharge the ingoing air in any desired directions.

I prefer to secure small rods 9 to the disks 8 and to pass these rods through openings 10 in the front of the incubator, so that the slides -n'1'ay be regained from the exterior oftlie casing C. The front ends oftliesc rods are preferably bent laterally to provide operating handles 11, by means of which the slides 7 may be either slid or rotated, as desired. I

Any desired air escape means may be provided for the casing C, but I prefer to make use of short vertical tubes 12 passing through the top thereof and having their upper ends controlled by appropriate slides 13. These tubes preferably project to some extent into the compartment H, to prevent air entering through tubes 5, from short circuiting and prematurely discharging through said tubes 12. 7

It will be seen from the foregoing that simple and inexpensive, yet eflicient means have been provided for ventilating incubators, and while the details disclosed are preferable, it will be understood that Variations may be made within the scope of the inventioneas claimed. For instance, While the slides 7 are preferably resilient to frictionally engage the tubes 5 and thereby be held in any position in which they are set, it will be understood that other provisions can be made for holding said slides in adjusted position. Moreover while the adjustin rods 9 are preferably employed, they coul be omitted and the slides adjustedby reaching into the casing C.

I claim 1. In an incubator ventilating means, a tube projecting from one wall of the incubator into the interior of the latter, said tube being open at both ends and having its outer end in communication with the atmosphere, a slide engaging the inner end of said tube and transversely curved into channel form, a disk carried by the end of said slide remote from said one wall, said disk being of a size to close said inner end of said tube when the slide is inwardly forced to the maximum, and a rod coaxial with the aforesaid tube, said rod being connected with said slide andpassing through an opening in the wall of the incubator remote from the aforesaid Wall, whereby said slide may be adjusted from the exterior of the incubator.

2. In an incubator ventilating means, a tube projecting from one wall ofthe incubator into the interior of the latter, said tube being open at both ends and having its outer end in communication with the atmosphere, a slide both slidably and rotatably engaging the inner end of said tube and transversely curved into channel form, anda disk carried by the end of said slide remote from said one wall, said disk being of a size to close said inner end of said tube when the slide is inwardly forced to the maximum, rotating of said slide with respect to the tube; serving to discharge the ingoing air in any desired direction.

3. A structure as specified in claim 2; together with a rod co-axial with the tube,

said rod being secured at one end to said disk and having its other end passed slidahly and rotatably through an opening in a wall of the incubator opposite the aforesaid wall, the outer end of said rod having a lateral handle, permitting both sliding and rotary movement of the rod to similarly move the slide.

In testimony whereof I have hereunto af- 2 fiXe d my signature.

D. M. HOLBROOK.

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