US1708396A - Orchard heater - Google Patents

Description

R. PETER ORCHARD HEATER April 9, 1929.

Filed Sept. 6, 1927 SECTION 8-8 INVENTOR Patented Apr. 9, 1929.

UNITED STATES PATENT OFFICE.

RUDOLPH PETER, OF SAN JOSE, CALIFORNIA.

ORCHARD HEATER.

This invention refers to orchard heaters of the oil burning'type and has to do with vent arrangement and specific stack-construction.

The objects of the improvements are to provide a better combustion and avoidance of draft trouble caused by wind.

In the drawings Fig. 1 is a vertical section of a complete orchard heater made in accordance with my invention.

Fig. 2 is a plan view of the wind shield thereof.

Fig. 3 is an enlarged sectional detail of a modification in formation of the special vents in the base of the stack; and Fig. 4 is a cross section of a portion of the stack con structed as per Fig. 3 broken away to show the form at AA and BB of Fig.3.

In the drawings 1 is an oil pot as indicated. The pot is provided with a cover 2 -fitting tightly thereover and having an upstanding neck 3 over which a stack is mounted, While upon the cover is arranged one -or more adjustable air vents and filling opening as at 4. The oil whenignited burns principally in the stack.-

The stack comprises two stove pipe sections 5 and 6 of conical form and joined to lower section.

gethcr at their large diameters preferably by a simple telescopic joint as at 7.

The-proportionate areas of the stack sections is important, the diameter of the top of the upper section being somewhat larger than the diameter of the lower end of the Around the base of the lower section are several rows of vents 8, 9, 1O staggered one above the other as indicated. These vents may be formed by cutting and bending small flaps or cars of the metal inward as indicated at 8, 9' and 10' or may be formed as shown in Figs. 3 and 4 to be later described.

In either construction the lower vents 8 are relatively large elongated openings while the vents 9 and 10 are very'narrow slits as shown and staggered in vertical relation toone another as clearly shown in Figs. 1 and 4.

Around the lower part of the stack is a curved U shaped sheet metal Wind shield 11 forming a space or channel around the stack open on the ends of the U for wind blowing in one general direction toward the stack.

- This U shaped guard rests upon the cover 2 of the oil pot and is retained in place around the stack by awire 12 passing from one leg of the U to the other and which wire holds the shield in place on the stack so that the shield may be revolved to point in any direction so that it may be set to catch the prevailing wind.

In Figs. 3 and 4 a variation in construction of the lower end of the stack is shown and in which the stack 5 is formed with steps 13, 14, 15 with vents 13, 14, 15' passing through the steps. Vents 13' and 14 are the narrow slits while vents 15 are the lower large vents corresponding to the large vents 8 of Fig. 1.

Steps or shoulders 13 and 14 being .rela tively small may be rolled into the metal of the stack section 5, but step 15 is best made on a separate section 5" formed with outwardly bent ears 16 into which downwardly extending cars 17 of section 5'extend.

Ears 16 are preferably notched at XX (see Fig. 4) so that ears 17 will interlock in sliding section 5' vertically downward into position.

The special shape of the stack comprising a pair of cones joined at their bases, and the arrangement of vents with staggered small slit-like vents above the larger openings, together With the larger diameter of the top of the stack over the extreme lower end has been found after experiments with a greatvariety of forms. to result in a perfect combustion not otherwise attainable, and the shield 11 makes the combustion uniform at all sides of the stack as it prevents the forma- .pot surmounted by a stack, said stack comprising two frusto-conical sections directly ]01I11I1g at their large ends and with a small end connected to the pot and a small end at the extreme top of the stack of larger diameter than the extreme lower end of the lower section.

2. An orchard heater comprising an oil -pot surmounted by a stack, said stack comout its perforated length.

3. An orchard heater comprising an oil pot surmounted by a stack, said stack comprising two frusto-conical sections connected at their large ends and with a small end connected to the pot, a plurality of rows of air vents formed around the base of the lower section of the stack only, comprising transverse slits in the stack with the wall of the stack bent inwardly below each slit and slanting downwardly and outwardly.

4. In an orchard heater of the character described, a stack, a series of vents around the stack, and a shield around portion of ghe vents and stack spaced outwardly thererom.

5. In an orchard heater of the character described, a stack, a series of vents around the stack, and a shield around portion of the Vents and stack spaced outwardly therefrom and open on one side for admission of lateral air currents.

6. In an orchard heater of the character described, a stack, a series of vents around the stack, and a shield around portion of the vents and stack spaced outwardly therefrom, said shield comprising a U-shaped sheet provided with means holding it in place around the stack.

7 In an orchard heater of the character described, a stack, aseries of vents around the stack, and a, shield around portion of the vents and stack spaced outwardly therefrom, said shield comprising a U-shaped sheet provided with means holding it in place around the stack, and the shield being revolvable around the stack for directing the legs of the U in various directions.

RUDOLPH PETER.

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