US1457078A - Heater - Google Patents

Description

May 29, 1923. 1,457,078

7 B. B. KAHN HEATER Filed Sept. 16. 1921 6 Shets-Sheet 1 'Ma 29,1923. I 1,457,078

B. B. KAHN HEATER v Filed Sept. 16. 1921 V 6 Sheets-Sheet May 29, 1923. 1.457.078

B. B. KAHN HEATER Filed Sept. 16. 1921 v 6 Sheets-Sheet 4 May-29, 1923. 1,457,078

8. B. KAHN HEATER Filed Sept. 16. 1921 i 6 Sheets-Sheet 5 May 2-9, 1923. 1 ,457,078 B. B. KAHN HEATER Filed Sept. 16. 1921 6 Sheets-Sheet 6 Patented May 29, 1923.

BERTRAND ZB.K.AHN, OF CINCINNATI, OHIO, ASSIGNOR TO THE ESTATE STOVE GOM- PANY, OF HAMILTON, OHIO, A CORPORATION OF OHIO.

HEATER.

Application filed September 16, 1921. Serial No. 501,100.

To all whom it may concern:

Be it known that I, BERTRAND B. KAHN, a citizen of the United States, and resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented a certain new and useful Improvement in Heaters, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this application.

My invention relates to heaters,and is concerned with the provision of a portable heater of distinctive and pleasing appearance adapted to be placed in a living room, for example, and characterized by, certain novel features of construction and by an improved plan of operation hereinafter fully described.

A description of my invention will best be understood when read in connection with the illustrative drawings; hence I shall pro ceed at once to describe the accompanying drawings in which- Figure 1 'is'a front elevational view of the heater of my invention,

Figure 2 is a side elevational view thereof,

Figure 3 is a vertical sectional view taken on the line 8-3, of Figure 5,

Figure 4 is a vertica sectional view taken on the line 4-4 of Figure 5,

Figure 5 is a horizontal sectional view taken on the line 55 of Figure 4,

Figure 6 is a fragmentary rear elevational view Figure 7 is a fragmentary section taken on the line 7-7 of Figure 6,

Figure 8 is a fragmentary sectlonal view taken on the line 8-8 of Figure 5,

Figure 9 is a fragmentary plan section on line 9-9 of Figure 2,

Figure 10 is a plan view taken substantially on line 1010 of Figure 4 showing the base and ash box and shaker mechanism,

mg 16, from but omitting the fire pot and side walls of the stove cabinet,

Figure 11 is a plan detail section of the grate dumping mechanism, and

Figure 12 ilustrates a modified embodiment of my invention.

Similar characters of reference refer to similar parts throughout the several views.

The heater comprises the cast iron fire pot 15, which is carried upon ash box castwhich. is suspended the grate hereinafter described in detail.

The ashbox indicated at 16 contains a suitable ash pan 17 and is provided with a door 18 which is hingedly mounted upon the forward end of the ash box in the usual manner so as to furnish a substantially air tight closure. Door 18 is provided'with a pair of screw draft registers 1919 by means of which admission of air to the ash box can be easily and accurately controlled.

The lower forward edge of the ash box casting rests directly upon the base 20, as is clearly illustrated-in Figure 4. The ash box casting is provided with an integral apron 21, which extends around the back and both sides thereof and is provided with a shoulder, which coacts with corresponding shoulders 22 formed on the upper edges of the back, sides, and a portion of the front of the base.

Resting upon the fire pot-15 and securely attached thereto through the medium of an door frame 26 are inwardly flanged to 'provide a seat for the rearwardly projecting peripheral flange 27 of the feed door.

The feed door is formed in two parts, the lower being indicated by 28 and the upper by 29. A swinging curtain 3O hingedly deends from the lower edge of the upper oor 29 in such manner that, when the lower door 28k is opened, it normally prevents the escape of smoke into the room but will be swung back by the impact of fuel being fed through the door.

It often happens in putting fuel into the stove that stray pieces of fuel are accidentally dropped to the floor. I have efdoor 28 is opened for the admission of fuel,

chute 31 is allowed to fall'by gravity until shoulders 3434 catch upon the inwardly projecting flange 26 of the door frame as indicated by dotted lines in Fig. 4. As the door 28 is closed, the forward edge of chute 31 engages the cammed guide strip 35 which is secured to the inner face of feed door 28. In this manner the forward edgeof the chute is forced upward by the closing of the feed door, until the edge rests beneath the rearwardly projecting lug 35 on the upper end of the guide strip 35, which prevents the center of gravity of the chute being swung past its pivotal axis. The drum 24 is riveted or otherwise s'ecured to a cast iron cover 36, which is provided with an integral stub smoke pipe 37 and a central orifice 38. Secured to the cover 36 and depending from the edges of the orifice 38 thereof, is an inverted sub stantially Y-shaped pipe comprising the ver tical passage 39 and the branches 40-40. The outer ends of the branches communicate with the exterior of the drum, an air tight joint being effected by the aid of flanged rings 41.

It will .be noted that all of the parts thus far described which lie above the base 20, are enclosed within a casing which comprises the base 20, a top 42, a front plate 43, a rear plate 44,?and side plates -45. The plates 43, 44, and 45-45 are preferably formed of sheet iron or steel, strengthened by embossed panels 46, the lower edges of rear plate 44, and side plates 4545 being received in the channel strips 47, the latter resting upon'the shoulders 22 of base 20, between the edges of the apron 21 and bead 48 which surrounds the upper periphery of base 20. The inner sides of the channel strips 47 are extended obliquely, as indicated at 47, and through this wing the channel is riveted to the border of the apron 21.

Channel strips 47 extend along the side and rear edges of the ash box apron, but areomitted along the front edge, the front plate 43 of the cabinet resting directly u on the shoulder 22 and adjacent the bea 48 of the front side of base 20. The central portion of the lower margin of the front plate merely lies over and in close contact with that portion of the ash box which acts as the ash door frame (Fig. 4). Through the use of the channel stri s 47 attached to the apron 21, I have eflected considerable facility in assembling and disassembling the heater, as the ash box and associated fire pot and drum may be liftedstogether with the assembled casing on or oif the base 20 in a single operation.

The upper edges of plates 43, 44, and

45-45 lie within the lip 42 of-the dome 42. The ,dome is supported on posts 49-49- which rest upon the upper surface of drum cover 36. The dome is provided on its four sides with a plurality of slots 50-50 and with the rear opening 51 to receive the flue section 52. Flue section 52 has a mitre fitting with the stub flue 37 of the drum cover 36, and is held to the latter by means of rename lugs 52 and 37 -37 projecting inwardly from the respective flues in such manner that the flue section 52 may easily be reversed as shown in dotted lines in Fig. 4, to lead to a vertical smoke pi e rather than to a pipe extending directly ackward to a wall behind the heater.

A centrally located orifice 53 in the top of the dome 42 is provided with an annular shoulder 54 into which is normally fitted a grid plate 55. This allows the superheated air from the Y-shaped pipe 39 to be discharged directly upward into the room.

Referring now particularly to F igures'. 5, 8 and 9, it will be noted that the casing plates 43, 44, and 45-45 are provided with lateral flanges 56-56 which lie at angles of 45 de rees to the planes of the plates. Abutting flanges 56-56 are secured together at a plurality of vertically spaced points, the bolts or rivets 57 also passing through laterally extending L-shaped brackets 58.

A corner strip 59 of the U-shaped cross section overlies and conceals each pair of abutting flanges, strips 59 also lying at an angle of 45 degrees to the planes of the casing plates. Retaining screws 60 'pass through the arch of the U strips and are threaded into the short legs of the l. brackets 58, holding the le sof the U strips tightly against the casing p ates. At their top and bottom extremities, the corner strips 59 are reduced to a right angled cross section, at. which points the flanges 56 of the cabinet plates are discontinued.

The front plate 43 is provided with an opening which registers with the feed door frame 26, and the metal of the front plate is preferably turned. inwardly around the adjacent surfaces of the frame, as is clearly illustrated in Figure 4. This inturned flange of plate 43 is normally spaced somewhat from the upper margin of the door frame in order that the latter may move upwardly afraction of an inch when the door frame is carried upwardly by the vertical expansion of the drum 24, fire 0t 15, and associated parts, without distu-r ing the casing plates as they rest in channels 47 upon the base 20. The margins of the doors 28 and 29, how'- ever, are extended (see F igs.'4 and 5)- so that at all times the door openings are tightly closed. The front plate is provided with suitable apertures through which pro- 'ject the door hinge ears 61-61 which are formed integral with frame 26. Ears 61-61 co-operate with corresponding ears 62-62 -formedj .upon. the doors 2 8 and 29.

cleaned merely by dusting the surface of the casing which. is substantially smooth.

The grate consists of an annular frame 63 supported on a plurality of lugs 64 depending from the ash box casting 16. De ending from the frame 63 are a plurality of rackets 65 which are formed with arcuate tracks having the same center as the frame 63. A shaker ring 66 is supported on the brackets 65 by depending rollers 67. The frame 63 is also provided at front and back with a pair of journals 6868 in which are journaled trunnions 69 carrying grate dumpers 70.

In order that the shaker ring 66 may be reciprocated from outside the heater casing, it is provided with a slotted arm 71 pivoted to an arm 72 which is secured to an arm 73, connected to a link 74. The link 7 4 is pivotally secured to a pivoted crank 75 to. which an operating arm 76 outside the casing is also secured. The pivot of crank 75 is supported by a frame 77 mounted on the ash box casting 16 and extends through an opening 78 in the front wall of the casing, the upper edge of the opening being spaced from the axis 75 in order to permit upward movement of the axis by reason of expansion of the inner parts of .the heater. The front ends of the trunnions 69 of the grate dumpers 70 carry interineshing gears 79, and one of the trunnions is extended forwardly and terminates in a tapering four sided terminal 80. The terminal 80 is engaged by a similarly formed socket 81, journaled in the door 18 and bearingoutside the door a. squared head 82. By this construction the grate may be dumped from outside the cabinet and at the same time the door 18 may be opened when desired, and when again closed, the terminal 80 will again be operatively received in the socket 81.

I prefer to equip the heater of my invention with a hot blast attachment of the type shown in Figures 3, 4 and 5. The hot blast attachment com rises a pair of hollow castings 8383, which are disposed within and secured to the lower portion of the drum 24, and provided with a plurality of tuyeres 84, which discharge downwardly into the fire pot. Communicating with and formed integral with, or attached to, the castings 8383 is a conduit'85 of inverted U shape,

-which, at its upper end, is provided with an air intake opening 86, which is controlled by a rotary damper 87."- .The damper 87 is rotatablyconnected with a plate in which are formed the openings 86, and carries a frame 88 which extends through the front wall of the cabinet and carries a handle 89 on the outside. This cabinet wall opening is formed with an expansion space above the bearing of frame 88. The function of the hot blast attachment will more fully herein- 7 after appear.

I now call attention to the vapor tank which is carried by the rear casing plate 44, and which lies in the space between the said tends to prevent accumu the face of the tank is both longer and wider than the opening in the plate. Any suitable means may be provided for holding the vapor tank in position. For instance, I have provided the top and bottom of the face with slots 91, which engage lugs 92 formed on the wall 44.

I now call particular attention to the louver openings 93, which are formed in the lower portions of the plates forming the casing. The louver openings are located directly opposite the fire pot, and are adapted to admit cold air to the casing and. to cause this cold air to impinge directly upon the fire pot. I find that for my purpose, the louver type of opening is far more efiective than any other type of air intake opening, because when the louver type of opening is employed, the incoming cold air is forced to travel directly into engagement with the fire pot. The air impinging against the fire pot is heated to a very high temperature almost instantly, and rises in the space between the casing and the drum. The louver type of opening is also desirable because when this type of opening is employed the fire pot is efiectively concealed from view.

A portionof the air which rises in the space between the casing and the drum passes directly upward and out through the slots in the dome 42. A portion of the rising air passes through the Y-shaped passage afforded by conduits 40 where it is superheated, and then directed into the dome and thence outwardly through the slots in the latter. When the hot blast damper 87 is open, a portion of the preheated air in the space between the casing and drum is taken 4 into the U-shaped passage 85 and passes downwardly into casting 83 and out of. tuyeres 84. The air directed into the fire pot through the tuyeres is superheated to a very high temperature in passing through passage 85 and casting 83, and when discharged into the fire pot produces thorough combustion of the unburnt gases rising from the fuel bed and consume the soot, and M igtion of dead ashes at the outer edge of the fire.

The vapor tank insures that the air discharged through the dome openiiigs willbe properly humid, and likewise keeps a considerable quantity of hot water available whenever the heater is in operation.

The modified embodiment of my invention illustrated in Figure 12 is used in connection with a hot air pipe 94 which extends from the heater to a hot air register 95 loas, for instance, in a. room above that in which the heater is located. "llhe lower end of the hot airpipe fits into the opening in the heater dome from whichthe grid is removed. When this embodiment of my invention is employed, the room in which the heater is located is heated by a portion of the Warm air which rises in the space between the casing and the heater drum and escapes through the apertures in the dome. A portion of the heated air which rises in the space between the casing and drum is delivered-through pipe 94 to the register 95, as is also the major portion of the superheated air from the Y-shaped' pipe 39.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a placed in a a base formed with a an ash-box formed with a peripheral flange removably seated on the shoulder, the flange being provided with a peripheral upwardly opening channel; a combustion chamber having a. fire-pot supportedon the ash-box; a

living room, the combination of peripheral shoulder;

casing having its lower edge loosely seated I in said channel and laterally enclosing and spaced from the combustion chamber and fire-pot, the casing being formed with air inlet openings surrounding and directly op-v posite the fire-pot; and a dome secured to and spaced above'the top of the combustion chamber and slida-bly contacting with the surface of the casing, the dome being encircled with air escape openings.

2. In a portable heater adapted to be placed in a living room, the combination of a base formed with a an ash-box formed with a peripheral flange removably seated on the shoulder, the flange portable heater adapted to be peripheral shoulder; v

' manure being provided with a peripheral upwardly opening, channel; a combustion chamber having a fire-pot supported on the ash-box; a casing having its lower edge loosely seated in said channel and laterally enclosing and spaced from the combustion chamber and fire-pot, the casing being formed with air inlet louver openings surrounding and directly opposite the fire-pot; and a dome secured to and spaced above the top of the combustion chamber and slidably contacting with the surface'of the casing, the dome be ing encircled with air escape openings.

3. In a portable heater adapted to be fire-pot, the casing being formed with air inlet louver openings surrounding and directly opposite the fire-pot, the space between the casing and the combustion chamber and fire-pot being bottom by the ash-box; and a dome secured to and spaced above the top of the combustion chamber and slidably contacting with the surface of the casing; the dome being encircled with air escapeopenings.

In witness whereof, I my name this 9th day of September,- 1921. BERTRAND B. KAHN. Witnesses:

. JULIAN J. Kenn,

Dona Tmmnrnn.

entirely closed at the,

hereunto subscribe

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