US188424A - Improvement in oil-stoves - Google Patents

Description

3 Sheets-Sheet 1.

D; SHIELDS.

OIL-STOVE,

Patented March 13, 1877.

s Sheets-Sheet z.

D. SHIELDS; OIL-STOVE;

No.188,424. Patentd March 13, 1877.

N. PETERS. FHoTo-Lnuoanwnsn, wA smNaToN n c UN TED STATES .DAVI'D sH LDs'oF FLORENCE, MASSACHUSETTS.

IMPROVEMENT in OIL-STOVES.

Specification forming part of Letters Patent No.

188,424Ldated March 13, 1877; application filed October 20,1876.

To all whom it mag concern.

Be it known that I, DAVID SHIELDS, of Florence, in-thecounty of Hampshire and State of Massachusetts, have invented a new and valuable Improvement inOil-Stoves; and I do hereby declarethat the following isa full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawing is a representation of the frame, theoiI-reservoir, and its connecting parts. Fig.2 is a perspective view of the under side of one of the burners. Fig. 3is a top plan view of the cooking-drums. Fig. 4 is an end view of the same. Fig. 5 is 'a detailed view, showing the under side and one of the ends of-the cooking-drums. Fig; 6 is a vertical longitudinal section taken on the line a; w of Fig. 3. Fig. 7 is a View, on any This invention has relation more particu-' larlyto that class of stoves in which are used hydrocarbon oils as fuel for heating, cooking,

and other purposes to which it may be adapted.

Heretofore the great difliculty experienced was in keeping. the oil in the reservoir cool,

in order to prevent the generation of gases and insure perfect safety in their use; also, of allowing the gases means of egress, so as to prevent the possibility of explosion. A perfect combustion is of the utmost importance to realize the greatest amount of heat from the oil consumed, and it is. also generally essential that the stove. should be so constructed as to prevent the transmission of heat from the several parts that become heated by the flame to the reservoir or tank which holds the oil; and therefore to overcome the above named difficulties, and to insure perfect combustion, are among the most important features .of my invention, as well as to construct a stove of the character named, that may be tion, therefore, consists in so suspending the reservoir which contains the oil that it may be adjusted to or from the heating or cooking drums for the purpose of 'lighting or trimming the wick of the burner, or removing the same to replenish the oil in the reservoir, or to recover the wick when turned below the ratchet and dropped in the reservoir, and also admitting of it being elevated when the stove is required to be used, the construction and ar rangement of the several parts whereby these results are obtained being hereinafter described and pointedout in the'claims.

My invention also consists, in connection with the adjustable oil-reservoir formed with a central air-opening, of the heating or cookwhen either drum is placed upon the frame to circulate through the same, and thereb ,keep the oil within the reservoir cool.

in which the'lower end of the wick-tube is secured, said plate having a downwardly-pro-.

through the wick, thereby preventing the transmission of heat down the wick into the oil.

My invention also consists in providing the preventing the transmission of heat from the connections.

My invention also consists in providing the heating and cooking drums with a supplemental cone placed over and around the inner cone, leaving a space between the two, inconnection with perforations or suitable openings through the plate upon which the cones rest,

space between the cones directly to the flame, thereby greatly increasing combustion, and burning the gases and smoke.

My invention further consistsin a cap to the easily' operated and handled, and e fiective in its several operating parts; and my, invening drums, with a similar opening, so that over the reservoir an unobstructed passage is g obtained, for the purpose of allowing theair My invention also consists of a metal plate,

jecting perforated flange, to allow the air to. pass underneath the end of the wick-tube and heating and cooking drums with V-shaped projections, securedto the under side of the same, the sharp edges of which rest upon the frame supporting the oil-reservoir, thereby,

heated part of the stove to the frame and its for the purpose of conducting air through the more convenient removal.

has vertical partitions h secured to the upper heating-drum, convex in form, and having a central depression, for the purpose of forming a curve upon the inside, against. which the gases and sinokestrike, followthe curve, and rotate downward, and are consumed by the flame. while the heat passes out through perforations or suitable openings around the top of the drum, and are deflected'downward by the projecting edges of the cap.

In the accompanying drawings, A represents the oil-reservoir, of cast-iron or other .-uitable metal, suspended on a frame, 13, by cords or chaiusc a, connected thereto by eyes or books b, or other convenienhmeans.

The cords a pass over grooved pulleys 0, Sc

cured to the frame, andconnect to a horizontal shaft, 0, near its center, said shaft having its hearings in the frame B, and the cords or chains alt-are connected to the shaft nearits ends. a

.mUpon one end of the shaft isfa ratchetwheel, d, and tothe frame B is secured a pawl, e, to' prevent the shaft from slipping back when rotatedin raising the oil-reservoir A. A hand-wheel, f, crank, or other suitable means, may be employed to operate the shaft 0. Recessed plates g'project from the corners of the reservoir and travel upon vertical ratchet and fallen into the reservoir; also, of.

the ready elevation of said reservoir when the stove is required for use.

The reservoir A has a central opening, D, for the purpose of allowing the air to circulate, and thereby keep the oil cool, as well as to enlarge the surface of the reservoir without enlarging its capacity, so that the burners may be placed far enough apart to give room for large utensils, and thereby admit of their The reservoir A part and sides of the same, which are made slightly less in their depth than the depth of the interior of the reservoir, in order to form a space for the oil to pass underneath said partitions to all parts of the reservoir, the

a purpose of the partitions being to prevent the oilfrom splashing by any sudden motion of said reservoir. The reservoir has formed therein openingst', around which are projecting flanges i, for the purpose ofpreventing the oil within the reservoir from overflowing, and also to securely hold the burnersin place. The wicktubes j of the burners have secured, near their to, the ordinary air-strainer k. Below this air-strainer, and secured directly to and around the'wicktube, is a plate, E, of copper, brass,

or other metal of good heat-conductingqu alities. the purpose of which is to draw the hea t fromthe wick-tube and radiateit from the stove, whereby the heat is prevented from passing down said tube and heating the oil within the reservoir. A metal plate, F,;is employed, through which the lower end of the wick-tubejpassesand is secured thereto by soldering or other suitable means. This plate a F has a downwardly projecting. perforated flange l, made somewhat deeper than the flange t", upon the oil-reservoir, so th atwhen the perforated flange is'Qpla ced over the flange t" the perforations will not be entirely covered, but allow a suflficient number of the perfora-. tions to be exposed to form an inlet for the air, whichpasses through and underneath the endof the wick-tube,and through the wick into the oil. The jflange 1", over which the perforated flaugel is secured, admits of the ready removal or replacing oftheqburner when desired, Thewick within the tubeais'y lowered orraised in the ordinary manner. The heating and cooking drums have aisup plemental cone, m, snrroundingthe inner or central cone n, and leaving a space between for the pu'rposeof conducting the air through said space, the air first passing through per j l forations or small holesdmade through the plate Iof the cooking-druu1, and through the 1 diaphragm O of the heatingdrums, upon which the cones rest, to allow free passagcof ithe air, which afterward passes through the space between the cones, as before described, and thence directly to the flame, thereby in-" creasingcombustion and burning the gases land smoke. W a 1 The side G of the cooking-drum I prefer to lconstruct of sheet metal; while the top H and bottom I I prefer being cast metal. Around the cones of the cooking-drum are chimneys J lh'aving an open front on a line withan openling in the side G, and over said openingin ;the chimney is secured a window, 1;, of mica gfor observing the light of the flame I of the ibnrner. Upon the top H of the drum is a round scalloped flange, K, to support vessels thereon, and allow the air to freely circulate junderneath them.

Both the heating and cooking drums'hav openings L to correspond with the central opening D in the reservoir,for the purpose of allowing the circulation of air, as before de scribed, and also have secured to the under side thereof V-shaped projections M, the sharp edges of which rest upon the upper part of the frame B or upon flanges q attached to the same, the object and purpose beingto have as little bearing-surface as possible brought in contact with the frame, and thereby prevent to a great degree the transmission of heat from the heated parts of the stove to the frame and itsconnections.

I do not wish, however, to -confine myself jections may be used to obtain the above re- -u of said caps.

suit without departing from the principle of my invention.

The heating-drums are placed in the same manner upon the frame as the cooking-drums,

and have the cones and perforations, as previously described. The drums N have mica windows 1', and are secured to a diaphragm. 0. These drums have a .convex cap, P, of

' suitable metal, placed over and secured to the top of the same, and are formed with a central recess or depression, 8, for the purpose of forming a'curve upon the inside of said caps,

or diminished, as circumstances may require.

Having now fully described the construction andoperation of my invention, what I claimas new, and desire to secure by Letters Patent, is 1 l. The reservoir A and frame B, in combination with the shaft 0, cords or chains 0. a,

pulleys c, ratchet-wheel d, and pawl 6, substantially as and for the purpose specified.

2. The combination, with the drums, of an oil-stove, having-a central opening, 11, of an adjustable oil-reservoir, A, formedwith a similar'opening, D, substantially as and for the purpose described.

3. The perforated flange 1 extending below the end of the wick-tube, and made somewhat deeper than the flange t", so that when placed over the same an inlet for the. air is formed to allow its passage to the wick, for the purpose set forth.

' 4. The removable drums, having sharpedged projections M upon the under side thereof and resting upon suitable supports q of the frame B,'su'bstantially as and for the purpose specified.

5 The combination, with -the cone n and perfora'tions'o of the supplemental cone m, substantially as and for the purpose set forth.

6. The combination, with the drum N, having near its upper edge perforations or holes t, of the convex cap P, with a central depression, 8, substantially as and for the purpose described.

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

DAVID SHIELDS. Witnesses NAT. E. OLIPHANT,

GEO. R. PORTER.

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