US3044421A

US3044421A - Combination gas fired incinerator and charcoal broiler

Info

Publication number: US3044421A
Application number: US31719A
Authority: US
Inventors: George W Franzheim
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-05-25
Filing date: 1960-05-25
Publication date: 1962-07-17
Anticipated expiration: 1979-07-17

Description

July 17, 1962 G. w. FRANZHElM 3,044,421

COMBINATION GAS FIRED INCINERATOR AND CHARCOAL BROILER 3 Sheets-Sheet 1 Filed May 25, 1960 m E R 1 S N ,R MW W F1 ,A W E 1 G I// m G H 3 F 9 f 8 -i p a y 3 2 COMBINATION GAS FIRED INCINERATOR AND CHARCOAL BROILER I Filed May 25, 1960 3 Sheets-Sheet 2 July 17, 1962 G. w. FRANZHEIYM 56 Z A, R 7 O W KW/8 63/ X M I 5 m i All!!! I!!! III!!! IIIIIIIII I GEORGE W. FRANZHEIM O as 2 m i ga -in x K I) :1 a a m ,4 a a; x o 3 7a 2 3 ATTORNEYS.

July 17, 1962 G. w. FRANZHEIM COMBINATION GAS FIRED INCINERATOR AND CHARCOAL BROILER 3 Sheets-Sheet 3 Filed May 25. 1960 GEORGE W. F'RANZHEIM INVENTOR Fig.

ATTORNEYS United States Patent 3,044,421 COMBINATION GAS FKRED INCINERATOR AND CHARCOAL BROILER George W. Franzheim, Box 1, Valencia, Pa. Filed May 25, 1960, Ser. No. 31,719 Claims. (Cl. 110--8) This invention relates to a combination gas fired incinerator and a charcoal broiler.

Anobject of the present invention is to provide a gas fired incinerator having a removable retort, which latter can be removed and used as a charcoal broiler.

Another object of the present invention is to provide a gas fired incinerator in which complete combustion is obtained, thereby avoiding the production of carbon monoxide.

A further object of the present invention is to provide a gas-fired incinerator which is smaller in size and lighter in welght than the known incinerators of the prior art through the use of asbestos as the heat insulating medium, instead of fire brick or ceramic material.

A still further object of the present invention is to provide a gas fired incinerator which has a removable retort wherein the heat of combustion is generated and shortly conducted to a chimney or flue.

An additional object of the present invention is to provide a gas fired incinerator which will develop a minimum of 1samoke when burning either garbage or household tras Still other objects, advantages and improvements will become apparent from the following specification taken in connection with the accompanying drawing, in which:

FIGURE 1 is a rear end elevational view of the combination gas fired incinerator and charcoal broiler according to the present invention.

FIG. 2 is a side elevational view of the combined gas fired incinerator and charcoal broiler.

FIG. 3 is a vertical sectional view, taken on the section line 33 and looking in the direction of the arrows, through the combined gas fired incinerator and charcoal broiler.

FIG. 4 is a partial vertical sectional view, similar to FIG. 3, through the combined gas fired incinerator and charcoal broiler, showing the door in partially open position.

FIG. 5 is a partial front end elevational view of the combined gas fired incinerator and charcoal broiler.

FIG. 6 is a front end elevational view of the retort for the combined gas fired incinerator and charcoal broiler.

FIG. 7 is a top plan view of the grill used in the retort.

Referring now to the drawings in detail and to FIG. 3 in particular, the gas fired incinerator is here shown as enclosed by a housing. This housing is comprised principally by two concentrically positioned shell members 19 and 12. Between the

shell members

10 and 12 there is an annulus 11 of asbestos. A front end plate 13 has concentrically positioned

annular flanges

14 and 15 adjacent and at its periphery, respectively, between which the

concentric shell members

10 and 12 are received. A flue opening 16 is formed in this end plate and is surrounded by a collar 17 for the attachment of a stove pipe, this collar being secured to the end plate by screws or rivets 13. Adjacent its bottom the front end plate 13 has an opening 19 therein for the reception of the burner assembly, to be later described. At its bottom the front end plate has integrally formed feet 2li20 thereon. The inner face of the front end plate within the area surrounded by the inner annular flange '14, except over the openings 16 and 19, is covered by a layer 21 of asbestos.

A rear end plate 23 has concentrically positioned

annular flanges

24 and 25 thereon adjacent and at its periphcry, respectively, between which the

concentric shell members

10 and 12 are received. This rear end plate has an enlarged central opening 26 therethrough and at its bottom it is formed with integral feet 27.

A circular door 28' has a concentrically positioned an-. nular flange 29 thereon, which is adapted to be received within the enlarged control opening 26 in the rear end plate 23. Over the area within the annular flange 29 there is placed on the inner face of the door 28a layer 36 of asbestos. The door 28 is pivotally mounted on the incinerator by a hinge arrangement, which latter is comprised by ears 3131 on the door, lugs 33-33 on the feet 27-27, and pins or bolts 32 connecting each car 31 to the corresponding lug $3. Adjacent its top the door 23 is provided with a handle 35, which is secured thereto by bolts or rivets 34. A catch 38 is pivotally mounted on top of the outer shell 12 of the incinerator between parallel ears 3636 on the latter by a bolt 37 extending through the ears and the catch, and serves to normally hold the door 28 in the closed position.

Parallel rail members 40-44) in the fonm of angle members are mounted within the inner shell member 10 between the front end plate 13 and the rear end plate 23, in chordally spaced relationship with the inner shell member.

The burner housing is open at its rear end to register with the opening 19 in the front end plate 13. The bottom plate 41 of the burner housing is elongated and extends beneath the parallel side rails 404-40, being slidably mounted on brackets 3Q-39, which are secured to the wall of the inner shell member Iii, as by welding. In such position the elongated bottom plate forms the floor of the flame duct, to be later described. A front wall 42 extends for only a part of the height of the burner housing and the side walls 43-43 are slanted from the top of the rear opening 19 to the top of the front wall. The holes 44 are provided in one side wall 43 of the burner housing for two gas supply tubes, to be later described. A cover 46 fits over the slanted sections of the side walls 4343. This cover is of expanded metal lath and provides for the admission of .air to support combustion in the incinerator. The cover is hinged to the front wall 42 at 45, and has a knob 47 thereon adjacent its opposite side for swinging same to and from the closed position.

A pipe 79' leads from a gas main (not shown) to the main gas valve which is timer actuated and thermo statically controlled. From the main gas valve 80 a pipe 42 extends through one of the holes 44 in one of the side walls 43 of the burner housing and is supported from the side wall by a bracket 48. This tube admits gas under pressure from the valve 86, which is set according to the kind and amount of trash to be burned. Aligned with the exit opening of the tube 49 there is a Venturi tube 5i which latter is supported from the front end plate 13. Two

gas lines

51 and 52 enter the burner housing through one of the holes 44 in the side wall 43 and extend to a point opposite the exit endof the Venturi tube 59 where they are supported by a bracket 53. This bracket is in turn mounted on one of the parallel side rails 40. The line 51 is the gas supply for the pilot light 51'. The line 52 extends from a closed tube 52, which is positioned in front of the pilot light 51, back to the control valve 80. The tube 52' contains a volatile insert gas. When heated by the pilot light 51, this gas expands and causes the thermostatically controlled valve 80 to open. When the pilot light goes out, the gas contracts and allows the valve 80 to close.

The retort is shown in FIGS. 3 and 6. It is principally made of sheet metal, preferably Nicroloy. The latter is a very high heat resisting stainless steel, having a 7 wall 66 and a top 67.

large percentage of chromium or nickel. It has a melting point of 3000 F. and a recalescent point of about 2800 F.,- whereas the normal operating temperature of the incinerator should not exceed 1500 F. The retort is of metal parallelepiped shape. It hassides 5454, ends 5656, and a bottom 57.- A closure is provided in the form of two plates .5858, each adapted to cover half the top area on the opposite side of the longitudinal center line and each having a downwardly depending flange 59 along one side at both ends, which flange is adapted to receive the upper parts of the sides 54-54 and the ends 5656, when the closure is in the operative position. The closure plates 58-58 are mounted on the respective side walls 5454 by hinges 61-61. At spaced intervals in the side walls 54-54 there are formed holes 55 which admit air to support combustion.

Inverted L-shaped lugs 60-60 are welded to the bottom 57 of the retort. These lugs are so positioned that their downwardly depending flanges are adapted to be received within the upwardly extending flanges on the rails 4040, when the retort is in place within the incinerator. One end wall 56 of the retort is provided with For use as a garbage or trash burner it will be understood that the incinerator is connected to the flue opening in a chimney by asuitable pipe which surrounds the collar 17 on the front end wall13. The garbage or trash to be burned is placed within the retort and the latter within the incinerator. The flame from the burner 50, passes through the flame duct comprised by the side walls 64-64 and top 65 of the lengthwise extending re-entrant bottom of the retort and the elongated bottom 41 of the burner housing, the space between the door 28 of the incinerator and the rear end wall 56 of the retort, and

. into the space between the inner shell member 10 of the incinerator and the closure 5858 of the retort, in the manner of a reverbatory furnace. From the space hetween'the inner shell member 10 of the incinerator and the closure 5858 of the retort, the flame passes out of the opening 16 in the front wall 13 of the incinerator and the connected pipe (now shown). Part of the flame is diverted, going through the vertically positioned reentrant portion at the rear end of the retort, through the holes 68 in the side walls 64A64A, and top 67 of this re-entrant portion, and into the retort itself, where coma pull handle 62, which is spot-welded, thereto, for withdrawing the retort from the incinerator. When the retort is in position within the incinerator, it abuts astop 22 in the form of an angle member positioned interiorly and chordally of the front end plate 13.

Along its longitudinal center line the bottom plate 57 of the retort is formed with a lengthwise extending reentrant duct, comprised by side Walls 6464, parallel respectively to the side walls 5454 of the retort and a top 65. The side walls tit-64 and top 65 form, along with the bottom plate 41 of the burner housing, a flame duct. At the end of the retort which faces the rear end 23 of the incinerator, there is provided a second and vertically extending re-entrant duct, which is comprised by extensions 64-A, 64-A of the side walls 64-64, end Holes 68 in the end wall 66 and top 67 provide for the admission of flames to the retort. The gases of combustion pass out of the retort through a hole 69 in the front end wall 56, which faces the front end wall 13 of the incinerator and approximately registers with the hole 16 in the latter, when the retort is in position within the incinerator. The hole 69 is surrounded by a collar 70, to which a stove pipe (not shown) may be connected, as will later be described.

The griddle is shown in FIG. 7. It is comprised principally by a reticulated member, formed of pairs of lengthwise extending rods 72-72 and 7373 and cross rods 74, suitably welded to the pairs of rods 72-72 and 7373 at the points of cross over. The centrally positioned rods 7373 are formed from a single element, which latter is suitably bent in three dimensions to form a pull handle 75. Side wings are comprised by plates 7676, each of which has a flange 77 along its ends and 1 'the inner edge.

The sidewings 76-76 are secured to the outer longitudinally extending rods 72-72 of the griddle by hinges 7878, and the side wings are of such width that they approximately abut along their outer edgeson the longitudinally center line of the griddle, when folded onto the latter.

-The outstanding feature of the incinerator according to the present invention is that it may be readily disassembled in a few seconds by removing the retort. This is possible because of the slidable mounting of the retort on the side rails 4040 and theswingable door 28. With the retort removed, all inside surfaces, including, of course, the corners, can be thoroughly cleaned. This is in marked contrast to the incinerators available from commercial gas distribution companies. The latter are invariably ceramic lined and they cannot be disassembled and cleaned. After same have had a few weeks or months of use unburned fuel and grease accumulate in inaccesssible cracks and corners, and the resultant odors attracts vermin, roaches, rats, mice, ants, etc.

bustion takes place. Air for supporting combustion at the burner enters through the holes 4444 in the side walls 43 of the burner housing and goes partly to the combustion chamber comprised by the side walls 6464, and top 65 of the re-entrant bottom of the retort and the elongated bottom 41 of the burner housing. The air in part also goes through the space between the front wall 13 of the incinerator and the front wall 56 of the retort, through the spaces between the inner shell member 10 of the incinerator and the side walls 54-54 of the retort, through the holes 55 in these side walls and to the interior of the retort, where it supports combustion. The gaseous products of combustion pass out of the retort through the hole 69 in the latter, the registering hole 16 in the front end wall 13 of the incinerator and the connecting pipe (not shown).

Carbon monoxide is eliminated from the products of combustion by what is here termed the after-burning effect. Air in excess of that required to support combustion also passes with the flames through the duct comprised by the side walls 6464 and top 65 of the mentrant bottom portion of the retort and the elongated bottom 4-1 of the burner housing, through the holes 68 in the side walls 64A64A, the end wall 66 and the top 67 of the vertically positioned re-entrant portion of the retort, and into the retort itself. In passing through the lengthwise extending duct comprised by the side walls 6464 and the top wall 65of the re-entrant portion of the bot tom of the retort that air becomes pre-heated. The preheated air meets with the burning gaseous products of combustion within the retort and any incompletely burned components of these products, such as carbon monoxide, are there fully burned.

The retort may be removed from the incinerator and used out in the yard as a deep fire broiler for broiling steaks. Due to its light weight, it may be taken on a picme and used for the same purpose. Charcoal may be placed within the retort and ignited in the usual manner, such as pouring lighter fluid over the same and touching a'match. The closure plates 58-58 are swung to the horizontal position, where they are in approximately the same horizontal plane as the tops of the side walls 5454 and end walls 5656 and are held in this position by the flanges 5959 along their inner edges abutting the The griddle 74 is then placed over. the open top of the retort, with the wings 76-76 resting on the out-turned closure plates 5858 respectively; :For fast broiling, the wings 7676 are folded over the steaks; for slower broiling, the wings may be left in the position shown in FIG. 7, that is spread out. In such position, the griddle 74 and wings 76-76 have a combined area about two-thirds of a square foot, and will hold up to three (3) porterhouse steaks at a time, if the latter are properly first trimmed to size. The steaks can be completely broiled within twenty (20) minutes of the time after the first has been lighted.

Due to the deep fire feature, that is the area of combustion being considerably below the steak being broiled, the fat which runs out of the meat will not catch on fire and deposit a sooty coating on the meat, as is the case with the conventional shallow charcoal broilers on the market.

The retort may be used within the incinerator for the indoor broiling of steaks in the above described manner, except that the closure plates 5858 cannot be left in the outwardly swung position shown in FIG. 7, but must be folded over the top of the retort, before the latter is placed within the incinerator. It may also be used outside of the incinerator for the indoor broiling of steaks, again in the above described manner, if a suitable pipe is connected to the collar 70 on the retort and extended to the flue opening in a chimney.

Having now fully described my invention, what I claim as new and useful and desire to secure by Letters Patent of the United States is:

1. An incinerator comprising a cylindrical double side wall with heat insulating material therein, an end wall with heat insulating material thereon closing one end of the incinerator and having an exit opening at its top for the gaseous products of combustion, a door also with heat insulating material thereon closing the other end of the incinerator, a burner positioned in the bottom of the incinerator, rails extending lengthwise of the incinerator between the end wall and the door, a right angle parallelepiped retort in said incinerator having holes in its side walls, and a channel longitudinally of its bottom extending from the burner to the door, pivoted complementary closures on said retort, and lugs on the bottom of said retort engaging the rails for slidably positioning the retort within the incinerator.

2. An incinerator comprising a cylindrical double side wall with heat insulating material therein, an end wall with heat insulating material thereon closing one end of the incinerator and having an exit opening adjacent its top for the gaseous products of combustion, a door also with heat insulating material thereon closing the other end of the incinerator, a burner positioned in the bottom of the incinerator, rails extending lengthwise of the incinerator between the end wall and the door, a right angle parallelepiped retort in said incinerator having holes in its side walls and a flame duct through its bottom extending from the burner to the door comprised by walls spaced inwardly from and parallel to the side walls of the retort and a top spaced above and parallel to the bottom of the retort, pivoted complementary closures on said retort, and lugs on the bottom of said retort engaging the rails for slidably positioning the retort within the incinerator.

3. An incinerator comprising a cylindrical double side wall with heat insulating material therein, an end wall with heat insulating material thereon closing one end of the incinerator and having an exit opening adjacent its top for the gaseous products of combustion, a door also with heat insulating material thereon closing the other end of the incinerator, a burner positioned in the bottom of the incinerator, rails extending lengthwise of the incinerator between the end wall and the door, a right angle parallelepiped retort in said incinerator having holes in its side walls and a flame duct comprised by walls spaced inwardly from and parallel to the side walls of the retort and a top spaced above and parallel to the bottom of the retort, a re-entrant flame duct at one end of the retort comprised by upward extensions of the side walls of the flame duct having holes therein, an end wall spaced inwardly from the adjacent end wall of the retort, and a top positioned above the top of the flame duct, pivoted complementary closures on said retort, and lugs on the bottom of said retort engaging the rails for slidably positioning the retort within the incinerator.

4. An incinerator comprised by a cylindrical double side wall with heat insulating material therein, an end wall with heat insulating material thereon closing one end of the incinerator and having an exit opening adjacent its top :for the gaseous products of combustion and a burner opening adjacent its bottom, a door also with heat insulating material thereon closing the other end of the incinerator, rails extending lengthwise of the incinerator between the end wall and the door, a burner housing over the burner opening in the end wallhaving an elongated plate thereon extending beneath said rails, a right angle parallelepiped retort in said incinerator having holes in its side walls and a flame duct through its bottom comprised by walls spaced inwardly from and parallel to the side walls of the retort and extending upwardly from the elongated plate on the burner housing and a top spaced above and parallel to the bottom of the retort, pivoted complementary closures on said retort, and lugs on the bottom of said retort engaging the rails for slidably positioning th retort within the incinerator.

5. An incinerator comprising a cylindrical double side wall with heat insulating material therein, an end wall with heat insulating material thereon closing one end of the incinerator and having an exit opening adjacent its top for the gaseous products of combustion, a stop on said end wall, a door also with heat insulating material thereon closing the other end of the incinerator, a homer positioned in the bottom of the incinerator, rails extending lengthwise of the incinerator between the end wall and the door, a right angle parallelepiped retort of lesser height than the diameter and lesser length than the length of the incinerator and having holes in its side walls and a flame duct through its bottom extending from the burner to the door comprised 'by walls spaced inwardly from and parallel to the side walls of the retort and a top spaced above and parallel to the bottom of the retort, pivoted complementary closures on said retort, and lugs on the bottom of said retort engaging the rails for slidably positioning the retort within the incinerator and against the stop on the end wall to provide a continuous flame passage through the flame duct in the bottom of the retort, between the door and the adjacent end wall of the retort, and between the top of the incinerator and the top of the retort to the exit opening in the end wall.

References Cited in the file of this patent UNITED STATES PATENTS Re. 19,214 Howle June 19, 1934 924,315 Buehring June 8, 1909 1,050,317 Watson et al. Jan. 14, 1913 1,147,189 Rue July 20, 1915 1,265,627 Dickey May 7, 1918 1,724,575 Graver Aug. 13, 1929 1,836,894 Bedigain Dec. 15, 193.1 1,878,110 Cole Sept. 20, 1932 1,847,004 Grinter Feb. 23, 1932 2,127,328 Egan Aug. 16, 1938 2,424,665 Pope July 29, 1947 2,560,184 Norman July 10, 1951 2,616,360 Thompson Nov. 4, 1952 2,598,067 OBrien May 27, 1952 2,802,434 Dowse Aug. 13, 1957 2,927,524 Luff Mar. 8, 1960 2,985,164 Imoto May 23, 1961