US1757878A - Furnace - Google Patents

Description

' c. H. ROOT May 6, 1930.

FURNACE Filed May 13, 1927 l VENTOR 0.12 R002,

'BY m d/area ATTORNEYS ll atented may d lhdd CARL 3E. il/GOT, 61F DETEWIE,

F'D'ENAGE Application filed allay 13,

This invention relates to furnaces for household purposes and is more particularly directed to a stoker for producing an underfeeding of the fuel. a ln the usual household furnace the grates are placed at such a distance below the feeding door that the surface of a bed of tire will be maintained substantially on a level with the feeding door so that the fuel may in be placed directly on the bed whereby the fuel such as coal is heated sufficiently to drive on the volatile products which are only partially consumed and carried d through the flue as carbon monoxide and smoke representing incomplete combustion of approximately forty per cent of the fuel;

An object of the present invention is the provision of a household furnace in which a mechanical stoker operated from the floor above the cellar is adapted to force a charge of fuel onto the grate when the fuel is coked and the volatile elements are burned with complete combustion.

A further object of the invention is the provision of a household furnace having a hopper in open communication with a casing in which a ram is adapted to be reciprocated for forcing a charge of fuel across" a plate curved upwardly to a grate with the fuel being ejected onto the grate when the fuel including the volatile products are completely consumed. p

This invention will be best understood from a consideration of the following detailed description in view of theaccompanying drawings forming a part of the specification; nevertheless it is to be understood that the invention is susceptible of such changes and modifications which shall define no material departure fromlthe salient features of the invention as expressed in the ap pended claim.

In the drawings Figure 1 is a vertical section of a furnace and stoker constructed according to the principles of my invention,

Figure 2 is a horizontal section taken along the line 2-2 of Fig. 1 and Figure 3 is a vertical section taken along 50 the line 3-3 of Fig. 1.

1927. Serial Etc 191,123.

Referring more particularly to the drawings l0 designates a furnace of any approved type but byway of example I have shown a hot air heater. A central casing 11 forms a combustion chamber 12 and a fire box limited at the lower end by a grate 13, a fuel deflecting plate 14, and an ash roll 15. An ash pit 16 is located below the fire box. The deflecting plate is curved upwardly from the lower inner end of a ram housing 17 and terminates along an edge of the grate 13..

The fuel feed opening 18 in the front of the furnace is disposed below the level of the fire bed and has the upper end substantially in horizontal alinement with the grate 13. 'l he inner end of the housing 17 projects into the furnace through the opening 18. lhe outer open end of the housing is supported by a bracket 19.

A hopper 20 has the upper end 21 open into which fuel is fed and said hopper is of such a capacity that it will supply the furnace with sufficient fuel to last approximately a day. The capacity of the hopper may be increased as will be appreciated. The lower end of the hopper opens directly into the housing.

A ram 23 in the form of a cylinder has a closed end 24 for forcing the fuel onto the deflecting plate and an open end at 25. A rod 26 is secured to the closed end 24: and extends axially of the ram.

A bell crank lever 27 has one arm 28 pivoted at 29 to the outer end of the rod 26 and the other arm 30 connected to a vertically disposed link 31. The lever is rockably mounted on a bracket 32 secured to the outer end of the housing 17.

The link 31 extendsupwardl through an opening in the ceiling 33 of the "urnace room. The ceiling is in effect the door of a ground room from which the rain is adapted to be remotely actuated. For this urpose l have provided a bracket 34 on which is ivotally mounted a lever 35 having a pivotal'connectioniwith the upper end of the linl; 3i.

ln the operation of the device, the lever 35 from an upper floor'in the house is rocked thereby reciprocating the link 31 and rocking the bell crank lever 27, The bell crank causes reciprocation of the ram which forces the fuel from the housing across the deflecting plate i t onto the grate when the volatile products are released and consumed With perfect combustion (luring coking of the fuel, thus eliminating waste.

it will be seen that by properly filling the hopper it will be unnecessary for the operator of the furnace to go to the furnace room except to refill the hopper or to operate the ash roll ll claim A furnace provided with a casing having a fuel 'l'eecling opening, a housing having one end in communication With. the opening, a ram slirlably mounted in the housing, means for rcciprocating said ram, means for feedingz fuel into the housing; intermediate the eucls thereof, a grate normally located in a 26 horizontal plane above the lower edge of said opening and having its side edges spaced iroin the casing, a deflecting plate curved upwamily and inwar ly from the lower edge of said opening and having its upper edge in close association with one edge of the grate a shaker bar located Within the casing and. disposed adjacent the opposite edge of the grate to receive the burned fuel from the erase.

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