US1786453A - Combination fireplace - Google Patents

Description

Dec. 30,1930. l. RISDQN 1,786,453

COMBINATION FIREPLACE Filed July 18, 1928 '1 III/l/IIIIII NVEN Ivan Risa/on Patented Dec. 3%, 193% I s L" 8. n

IVAN RISDON, OE SEATTLE, WASHINGTON COMBINAEION FIREPLACE Application filed July 18, 1928. Serial No. 293,747.

The invention is a combination fireplace having means for mechanically feeding fuel thereto.

An object of the invention is to provide a heatin system in combination with a fireplace in which the fuel supply, forced draft, feed. water circulation and ooerating motor may all be controlled from single panel Within the room.

A still further object of the invention is to provide a heating plant with automatic supply and feeding devices in which both may be independently controlled.

And a still further object of the invention is to provide a combination heating plant and fireplace which is comparatively simple and economical to operate.

Vi ith these ends in view the invention embodies a fireplace, a stoker for feeding fuel intothe fireplace, a convey r for supplying fuel to the stol er, a forced draft fan, a hot water coil and suitable connections to a hot water heating system, a circulating pump, an ash chute, and suitable coal and ash bins.

'Qther features and advantages of the invention will appear from the following description, taken in connection with the drawings, wherein: V Figure 1 is a cross section through the fireplace showing the entire apparatus with parts omitted. I

Figure 2 is a plan view of he stoker.

Figure 3 is an elevation showing the mechanical equipment for operating the supply, the feed and the draft. 1

Figure 4 is an enlarged viewshowing the ratchets for operating the fuel supply and feed.

' At the rear of the stolrer is a circular opening i with a screw 5 hit that is formed on a shaft 6 which extends beyond the end of the stoker and is provided with agear 7 by which the stoker is rotated. The stoker is made as shown in Figure 2 with passage 8 having outwardly sloping sides extending from the end of the screw to the point 9 and between the point 9 and the point 10 is a grate 11. It will be observed that coal is fed into the screw and forced by the screw into the opening 8 and through the opening onto the grate 11 where it will burn. The ash will then drop over the edge of the grate into an opening 12 below which is an ash chute 13 which extends downward as shown in Figure l to an ash bin 1% which may be placed outside the building and below the ground. level as shown. The bin 14 may be provided with a cover 15 having a ring 16 that will extend upward through the sod and when it is desired to remove the ashes the cover 15. with the sod thereon may be removed.

Below the grate 11 is an opening 17 to which an air pipe 18 is connected through an openin 19 below the openingS and the pipe 18 is connected to a fan 19 which may be operated by a motor 20 through a shaft 21 as shown in Figure 3. It is understood that any suitable type of fan or means for supplying air may be used in place of the fan 19'. The pipe 18 is provided with a flexible coupling 22 which may be located anywhere in the pipe and which will prevent vibration being transmitted by the pipe. The pipe 18 is also provided with a damper 23 which may be controlled from a panel 24 at the front of the 7 fire place by aknob 25 through levers 26 and 27. It will be observed that coal on the grate will be ignited and the fan will cause a forced draft through it and as the volume of air may be regulated the amount of fire on the grate may be controlled. It will also be seen that iii) the amount of fuel forced upon the grate by the screw may also be controlled as'hereinafter described. The fuel may be fed to the screw by a conveyor 28 from a coal bin 29 through a hopper 39 as shown in Figure 2. I in the design shown the conveyor is formed with a chain 31 having flights 32 thereon whicn will scrape up th coal as shown in Figure 5, convey it up the chute and dump it into the hopper 30 from where it will fall directly pawl 23'? in a yoke 38 as shown in Ft The screw is operated by a. similar gear.

which is indicated by the numeral 7 on the shaft (3 and tiis gear is operated by a pawl 39 in a yoke 40. The yolres 3b and 40 are connected by a rod 41 which is attached by a rod 42 to an eccentric on a shaft 44 tl at is operated by a worm gear 45 from the motor shaft 21 and it will be observed that as the eccentric moves the rod upward the pawl 39 will engage the teeth of the gear 7 and retate the screw and a the eccentric moves the rod downward the pawl 37 will on the teeth of the gear 36 and rr. the sprocket 33 of the conveyor. Springs 46 and 47 are provided to hold the pawls into engagement with the teeth of the gear. The movei'nent of the gears may be regulated by plates 48 and 49 which may be moved around the surface of the gear to prcvent the pawl engaging the teeth of the ear for any desired amount of the stroke as i will be observed that as the pawl moves bacl ward it will slide upon the plate and thereby remain out of engagement with the teeth of the gear until it again comes forward and slides off of the end of the plate. It will be possible to hold the pawl out of engagement with the gear teeth during the entire stroke or any amount thereof so that itis possible to readily regulate the movement of the screw or con veyor. The plates 48 and 49 are pivotally mounted upon the shafts of the ratchet gears and each are provided with arms indicated by the numerals 50 and 51 which are connected by rods 52 and 53 to levers 54 and 55 on rods and 57. The rods 56 and 57 may extend through the side of the fireplace as shown inFigure 1 and may be provided with. knobs 58 and 59 at their outer ends by which they may be rotated to adjust the position of the plates .48 and 49. It is therefore possible to positively control the amount of fuel supplied to the stoker and the feed of the fuel into the stoker while the motor. is operating continuously.

A. lever 60 may also be attached to the yoke 4.0 as shown in Figure 3 and this is attached to a rod 61 through a lever 62 which extends through the stoker to the ash opening 12 where it is provided with a lever 63 which will move upward and domiward to break any clinker that may form in the ash.

A pipe 64 may be connected to the upper end of the hopper 30 and also to the intake the fan as shown in Figure 3 so that the coal gas formed at the upper end oftheconveyor will. be drawn into the fan and injected into the fire.

The motor shaft 21 is provided with a pulley 65 which operates a pump 66 through a belt 67 and the intake of the pump is connected by a pipe 68 to logs as indicated by the numeral 69 which may be located above the fire opening in the fireplace. These logs are made of metal and connected. together so that they may contain water which will be heated by the fire. These logs are also connected to a coil 70 in the back of the fireplace and which extends upward into the flue opening indicated by the numeral. 71 and. the upper end of this coil may be connected by a pipe 72 to radiators 73 and 74 or any other suitable means by which heat generated in the fireplace may be transmitted to a remote point or points. It is understood that although apipe coil is shown any other suitable means may be used for conveying the heat to any other part of the building. The discharge of the pump 66 is connected through a pipe 7 5- to the radiators to provide a complete circulation. The pipes 75 may be provided with a control valve 76 which may be operated from the panel 24 by a knob 77 through levers 78 and 79 so that the amount. of water passing through the system may be controlled in order to control the temperature thereof. The pipes 68 and 75 areprovided with flexible couplings 80 and z 81 to prevent vibration being transmitted from the pump. It is understood that any suitable type of pump may be used or any other means may be used for circulating the water.

The opening of the fireplace may be provided with a transparent cover as indicated by the numeral 82 to hold the heat around the pipe coils or prevent cool air entering the fireplace to lower the temperature in the space 71. This cover may be made of pyrex or any other suitable material so that the fire may readily be seen, however it is also understood that a nontransparent plate may also be used and also that the cover may be omitted.

It will be understood that other changes may be made in the construction without departing from the spirit of the invention. One of which changes may be in the use of other means for feeding fuel to the stoker, another may be in the use of other means for conveying the ash from the stoker, another may be in the use of other means for pro-- viding the forced draft, another may be in the use of control devices of a different design or arrangement, and still another may be in the use of the device for a difierent kind of fuel.

The construction will be readily understood from the foregoing description. To use the device it may be installed as shown 7 with the coal bin also placed below the ground level and provided with a cover similar to that of the ash bin and as the motor is started the conveyor 28 will feed the fuel from the coal bin to the stoker and the stoker will feed the fuel to the grate Where it will be ignited and as the fuel burns the flames of the fire will'pass upward around the imitation logs to heat Water in the coils and after the fuel has been burned the ash will drop into the chute 13 so that it will pass into the bin 14. The amount of fire may be readily controlled so that the device may be operated very efliciently and an eventemperature may readily be maintained.

Having thus fully described the invention, What I claim as new and desire to secure by i Letters Patent is In a combination fireplace of the character described, a chimney having a hearth opening in the side thereof, a floor in the said openin g a grate in an opening in the said floor, mechanical means for feeding fuel to a point at the closed side of the said chimney and directly behind the said hearth opening, other mechanical means for feeding the said fuel through the said chimney and into the floor opening below the grate, and means for forcing a draft up through the said floor opening.

IVAN RISDON.

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