US2403941A - Chute structure for incinerators - Google Patents

Description

qgufly 9 J. T. Ma LAREN CHUTE STRUCTURE FOR INCINERATORS Filed July 11, 1944 2 Sheets-:Sheet 1 INVENTOR. d v/1&5 T MCLHEEN July 16, W46. J. T. MaCLAREN EA-Qfi fifl CHUTE STRUCTURE FOR INCINERATORS I Filed July 11, 1944 2 Sheets-Sheet 2 5 a f f M NH I N VENTOK JAMES T HICLHEEN X Patented July 16, 1946 s PATENT OFFICE CHUTE STRUCTURE FOR INCINERATORS James Todd MacLaren, Los Angeles, Calif. Application July 11, 1944, Serial No. 544,353

2 Claims.

My invention relates to incinerators which are used for burning up trash of all sorts of burnable materials, including household garbage, and the chief use of the incinerator in which my invention is employed is for household purposes, being relatively of small sizes of such incinerators.

The bodies of these small incinerators in general use are made of concrete of compositions which will withstand the heat which is developed by the combustion of the contents of the incinerator, which contents are burned for disposal.

It is highly desirable and is really necessary that the doors which are opened for admission of material which is to be burned have a closure fit over the entrance opening which will be normally close on all sides to prevent the escape of flames or gases from the inside outward alongside of the entrance door or gate.

Further, the trash and the garbage which is introduced into the incinerator, and particularly the garbage, is'discharged usually from buckets, pans and cans and frequently the doors are so constructed and mounted on the incinerator that the materials while being emptied into the doorway of the incinerator will spill on around the doorway and will have to be gathered up for entrance to the incinerator.

An object of the invention is to provide an incinerator entrance door which will act as a hopper when opened for the admission of what is to be burned in the incinerator.

A further object of the invention is to provide such a hopper construction that it will close tightly around the door space consistent with the normal cost of production of such parts.

A further object of the invention is to provide a door for the purpose described and which may be assembled in place on the incinerator without the use of bolts, screws, etc., and when the top of the incinerator is mounted on its base, the door of my incinerator may not be removed as relates to any essential part of my door.

A further object of the invention is to provide a construction of my door formed by flat pieces which can be interlocked together and mounted in the incinerator and after the cover is mounted over the doorway, my door may not be removed because it will be interlocked together as relates to the pieces of the door and also into the doorway.

Reference will be had to the accompanying drawings in which:

Figure 1 is a perspective view of a complete incinerator with my hopper door open.

Figure 2 is perspective elevational view with my door in place and closed before the top cap is mounted on the incinerator base.

Figure 3 is a sectional end View through the door opening showing my door in a closed position and wherein dotted lines indicate the open position of my door.

Figure 4 is a view from the inside of the doorway with my door closed looking in the direction of arrow 4 of Figure 3.

Figure 5 is a top plan sectional view of my door on line 5-5 of Figure 3.

Figure 6 is a sectional detail on an enlarged scale showing the hinge structure of my door.

Figure 7 is a perspective view of the body parts which form the walls of my door associated to each other approximately as might appear by looking at these parts from the inside of the incinerator for an understanding of the connections of the parts to themselves.

Figure 8 is a perspective view of the metal bar which is mounted across the top of the doorway of the incinerator.

Figure 9 is a perspective view of a metal bar which forms the threshold of the door opening and is constructed in form to become a part of the hinge structure for my door.

The body of the incinerator may be made in any suitable manner and of any suitable material as indicated by B and may be provided with any suitable ash removing door A.

At the top of the body B there is a door opening, the top of which opening is spanned by the metal bar 2 which is secured into the body of the material out of which the incinerator is made.

This bar 2 may be held in place in any suitable manner. It may be held in place by the cap C of the incinerator when the cap is applied in the body B. It may also be held in place by the studs 4 which pass through holes 3 of the metal bar 2. The bottom of the door opening is covered by the threshold bar 5 secured to the material of the body of the incinerator by stud bolts 6 which pass through openings 1 in the lower flange of the threshold bar 5. The upper edge of the threshold bar 5 is provided with the flange 8 which forms a part of the hinge means of my door.

The front or the outside face plate of my door is indicated as 9, see Figure '7, in which figure you are looking from the inside of the door. This face or front plate 9 is provided with side walls I0 and in Figure 7 you are looking at the inside of these side walls Hi, The face plate 9 is provided with little slots H on its edges and the side walls [0 are provided with hook-shaped lugs [2 which are adapted to be entered into the notches II and 3 then slid downward which then will lock the two parts together in the position, which they assume when mounted in the doorway.

The lower end of the plate 9 terminates in the straight edge 13, Projecting outwardly from the inside of the plate 9 above the bottom edge [3 there is a curved flange M which when my door parts are assembled and are placed into position in the incinerator, the straight edge l3 rests on a shoulder 55 of the bar '5, which then acts like a hinge pin connection as and when the straight edge l3 contacts the shoulder l5 and is held in place by the curved flange l4 riding over the flange 8 of the threshold bar 5.

In the assembly of the parts of the incinerator after the walls of the body B have been assembled in place and before the metal bar 2 is mounted over the doorway in the body B, my front or face plate 9 and the side walls ill are locked'together and then are mounted in the doorway as a single unit supported on the threshold bar 5, which has already been mounted-in the doorway.

The side walls H3 are provided with their top .edges it which are curved to conform to a radius over the straight edge #3 of the face or front plate 9. On the inside upper corner of the side walls l E! there is an outward projection l l, which is adapted to be engaged by the inner side of the lower flange 5 8 of the bar 2% and when the said bar-is mounted in place over the top of the doorway.

This projection ll contacting behind the flange H) of the bar '2 holds my door open, thus forming a hopper H when the door is open, see Figure 1.

After this assembly is so far made, the top cap member C of the incinerator is then mounted on the incinerator which completes the assembly of an incinerator provided with my door hopper construction. A hand hold knob I9 is provided for opening and for closing the door.

After my door has been assembled in the incinerator as shown and described herein and the top cap of the incinerator put on in place, my door may not be removed from its location in the incinerator and it will operate successfully in being opened and closed in the absence of any hinge means of the common hinge character. The door will hold itself in place as a hopper when opened in the absence of any other means outside of the projections ll contacting the insideof the flange l8- of the bar 2.

When my door is in closed position the inside top corners of the side walls lil overhang the front plate 9 and weight by gravity holds the door shut at all times when closed. Thereby no springs or latches are needed for holding my door shut.

The construction and the arrangement of the parts of my door are of low cost and are highly serviceable and strong and are especially so wherein an incinerator door is subject to constant heating and cooling, as does take place in this class-of an incinerator.

What I claim is:

1. In an incinerator of the class described having a rectangular door opening, the top of this opening being spanned by a cross bar, said bar having an inwardly and downwardly extending flange across the top of the door, the said opening spanned by a threshold bar at the bottom thereof,

said bar having a vertical flange across the opening of the door, an outward extending offset on said upward flange, a door plate covering the entire door opening and resting on the said onset of the said threshold and the top of the said door plate overlapping the bottom of the said flange on the top of the door, an inwardly and downwardly extending flange on the inside and at the bottom portion of the said door plate overriding the said vertical flange on the said threshold which overriding flange together with the bottom portion of the said door plate rests on the said offset of the said threshold to form the hinge for the door: in combination with side plates attached to the side portions of the said door plate and approximating a triangular shape and With their apex ends located at the bottom of the said door plate and extending upwardly therefrom at an approximate angle of fort five degrees and the upper inner corner of said plates extending to a distance above the lower edge of the downward flange of the said cross bar in a narrow projection that when the face plate is rocked about its hinged center to an open angle of approximately forty'flve degrees, the said projection on the inside corner of the said side plate will contact the inside of the downward flange of the bar across the top of the opening, the top edges of the triangularly shaped pieces'liaving those edges on a radii line around the hinge center at the bottom of the front plate whereby when the parts are assembled the door plate and its side plates will be retained in place, the bottom of the door hinging over the threshold flange and the top of the door retained in place by the curved top of the side plates contacting the bottom of the flange on the cross bar at the top.

2. In a door of the class described, a front face plate forming the coverage of a door opening, the bottom edge of the said front face plate having a straight edge, a projection from one side of the bottom portion of the said front face plate and extending inwardly and downwardly, thereby forming as it were a groove shaped space across the bottom of the said front face plate, a threshold bar across the bottom of the door opening, a vertically extending .flange extending upwardly from the said threshold bar and adapted to enter into the said groove on the bottom of the said front face plate forming therewith a hinge connection between the said front face plate and the said threshold bar, triangularly shaped side plates detachably fixed to the interior sides of the said front face plate thereby forming a chute for directing materials to the interior of the incinerator, the said triangular plates having hooked shaped projections on their edges contacting the sides of the said front face plate, apertures in the sides of the said front face plate into which apertures the said hooked shaped projections are locked and thereby held to the said front face plate, upwardly extending projections on the top inner corners of the said triangularly shaped side plates whereby said projections contact the inner side of the top cross bar of the door opening.

JAMES TODD MACLAREN.

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