US324599A - Coffee or nut roaster - Google Patents

Description

(No Model.)

B. P. SHIELDS.

COFFEE. 0R NUT MASTER.

No. 324,599. Patented Aug. 18, 1885.

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. NIT-ED STATES BENJAMIN F. SHIELDS, OF OSKALOOSA, IOVA.

COFFEE OR NUT ROASTER.

SPECIFICATION forming part of Letters Patent No. 324,599, dated August 18, 1885. Application filed August B, 1884i. (No model.)

T0 all whom it. may concern:

Be it known that I, BENJAMIN F. SHIELDs,

4a citizen of the United States, residing at of the cylinder or receiving chamber,in which u the steam and water after passing through the heating-pipe are separated, and conducted, respectively, to the engine and water-tank, also showing the several connections to the chainy ber in elevation; and Fig. 3, a detail view in section of the receivingchamber and watertank, showing the means of communication with each other, also the pump and water-pipe communicating with each other and the tank.

The present invention has relation to that class of coffee and nut roasters in which is cmploycd a suitable engine for rotating the roasting-cylinder by means of steam generated in a boiler and .supplied to the engine by means of a pipe communicating therewith and with the cylinder of the engine.

Heretofore the means usually employed were the flames from a gasoline burner or burners extending froma pipe or pipes leading to a suitable reservoir containing the supv ply of gasoline, and as the steam was generated in a boiler it was necessary to provide two sets of burners, one arranged under the boiler to heat it and the other under the roasting-cylinder, thereby consuming an unnecessary amount of fuel to attain the end desired.

Ihe object of the present invention is to dispense with the use of the boiler heretofore employed and generate the steam directly in the pipes as the water passes through them,and to attain this object I arrange the pipe or pipes directly under the roastiug-cylinder,and cause a continuous circulation of water throu gh them, and arrange the burners under said pipes, so that the heat used to generate the steam may 5o be utilized to do the roasting,

In the accompanying drawings, A represents the casin g, of any suitable form and dimensions, provided at its top with the usual nut-pan, a, into which the nuts are emptied from the roasting-cylinder to keep them warm. The casing A contains what I term a fire-box, H, and in this fre-boX is located the roasting-cylinder B,of the usual construction,revolved by means of pulleys and belt or other suitable means connecting with an engine, I, of any wellknown construction commonly used with this class of devices.

Below the cylinder B,and directly under it, is the coil-pipe C, said pipe, although being preferably coiled to increase its heating-surface, as shown, may be composed of' aseries of horizontal and parallel pipes; but these would be less effective for the purpose. One end of the coil C connects with a pipe, b, which extends up a short distance, and then passes down through the top into a receiving-cham` ber, D, to discharge the surplus steam and water therein. This receiving-chamber I shall term a separaton as the steam and water as it is discharged from the pipe b, after passing through the coil, is separated, the water being conducted to the supply-tank hereinafter described and the steam to the cylinder of the engine. The opposite end of the coil C connects with a pipe, e, which extends through the coil down to a pump-cylinder, k, in which are located a suitable valve, i, and piston k, said pump communicating with a tank, K, by means of a short pipe, l.

When the pump is in operation, water will be taken from the tank K, forced up pipe e, through the coil O, and thence discharged into theseparator D through Vpipe b. Thcpiston-rod m of the pump being connected to the engine I by crank-pin or any ofthe well-known means, the piston k is given a continuous reciprocating motion, thereby causing a continuous circulation of water through. the coil in which steam is generated by means of the flames from the gasoline-burners @,placcd under the coil, or any other heating medium may be used. As

the water and surplus steam, are discharged into the separator, the water will fall to the bottom and steam will rise and pass to the engine through the pipe f, with which it com- IOO . power to run the engine.

municates, thus being utilized as a motive The surplus water in the separator D is conveyed back tothe tank K through a pipe, g, said pipe beingprovided with a cock, and acts as ablow-ofl' pipe to clean the separator of all sediment.

The separator D is provided with a suitable gage, E, safety-valve d, and pressureindicator F.

It will be noticed that the boilers usually employed in this class of devices are entirely dispensed with, the burners used performing the double ofce of generating the steam in the coil ofpipe as a motive power for the en gine, and at the same time heating the cylinder that contains the coffee or nuts, the heat also radiating from the coil assisting the roasting. The flame from the burners first strikes the coil,and,in connection with the heat therefrom, passes up and strikes the roastingeylindcr, while the waste heat will strike the bottom of the nut-pan and keep the nuts warm.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is*

l. In a roasting apparatus,the combination of a revolving cylinder, a motor, a steam-coil generator for the motor located beneath the roasting cylinder, means for heating said cylinder and steam-coil, and a pump operated from said motor, and located between the steamcoil and its supply, to force a continuous current of water through the coil,substantially as described, and for the purposes specified.

2. In a roasting apparatus,the combination of a revolving cylinder, a motor, a steam generator, a supply-tank and separator connected withthe generator, theseparator communicating with said tank and 1notor,and a pump operated from the motor, and located between the tank and generator, the parts being constructed, arranged, and operating substantially as shown,and for the purposes described.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

BENJAMIN F. SHIELDS.

Witnesses:

N ATHAN W. HUssEY, Tirosn B. GARRnTsoN.

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