US722430A

US722430A - Vapor-burner.

Info

Publication number: US722430A
Application number: US40362A
Authority: US
Inventors: Willis Mitchell
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-10-03
Filing date: 1900-12-19
Publication date: 1903-03-10
Anticipated expiration: 1920-03-10

Description

PATBNTBDMAi. 10, 1903.

j No. 722,430. I

VAPOR BURNER. 5

L L E H G T I M W VAPOR BURNER.

APPLICATION FILED DBO. 19, 1900.

2 SHEETSSHBET 2.

N0 MODEL.

llllllllll UNITED STATES PATENT OFFICE.

WILLIS MITCHELL, OF BOSTON, MASSACHUSETTS.

VAPOR-BU RN ER.

SPECIFICATION formingpart'of Letters Patent No. 722,430, dated March 10, 1903. Original application filed October 3, 1900, Serial No. 31,810. Divided and this application filed December 19, 1900. Serial No. 40,362. v

To all whom it may concern:

Be it known that I, WILLIS MITCHELL, a citizen of the United States, residing at Boston, in thecounty of Suifolk and State of Massachusetts, have invented certain new and useful Improvements in Vapor-Burners, (a division of application Serial No. 31,810;) and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

This invention relates to vapor-burning heaters especially adapted to be mounted on and move with a smoothing-iron, although available for use with other articles, implements, utensils, and structures, movable and immovable. y 1

The said invention has for its principal objects to improve the devices for regulating the supply of vaporous fuel to the burner, to facilitate the insertion and removal of the burner and parts attached ,thereto, while securing strength and rigidity in the same and in the mounting thereof, to protect and generally to increase the simplicity, compactness, efficiency, strength, and cheapness of the vapor-burning heater and the article to which it is applied.

To these ends my invention consists in the construction and combination of the several parts of the vapor supplying and-burning de-' vices hereinafter set forth and claimed.

In the accompanying specification and drawings I have described and shown thesaid devices as applied to asmoothing-iron in accordance to the rules which require illustration of some one useful embodiment of an invention; but I do not claim the construction of the smoothing-iron nor the combination of any of its parts with each other or with a burner especially adapted thereto, the same being in part the subject-matter of my application, Serial No. 31,810, filed October 3, 1900, of which this is a division.

In the accompanying drawings, Figure 1 represents a vertical central longitudinal section of a self-feeding vapor-heated smoothing-iron provided with vapor-burning heating devices. Fig. 2 represents a transverse section of the same on the line or a; of Fig. 1.

'der' engages.

(No model.)

Fig. 3 represents a detail view of the burnercylinder and jet-block, partly broken away to more clearly exhibit the latter and showing the three rows of perforations. Fig. i represents a detail plan view of the liquidreservoir, the air-chamber being removed. Fig. 5 represents a bottom view of the airpump and the shell of the said chamber. Fig. 6 represents a detail view of the lever which operates the regulating needle-valve. Fig. 7 represents an external perspective detail view of the cylinder to which said lever is clamped, the wall of the same being partly broken away to show the internal pin. Fig. 8 represents a detail view of the valve-pin, its head, and collar. Fig. 9 represents a detail View of the spirally-grooved fixed sleeve with which the said internal pin of the cylin- Fig'. 10 represents a detail view of the jet-block. Fig. 11 represents a vertical cross-section through the lower part of Fig. 2 on the line X X.

A designates the smoothing-iron handle, which is wooden and of ordinary form, having the upward ends of U -shaped handle-support B set into recesses a of its ends and fas-- tened by screws a. A larger screw B'passes through the bottom of the said support at the middle thereof, engaging with a screw-tapped boss 0 on the top of the upper shell 0 of the smoothing-iron body. An annular rib 0 also raised on the said shell and concentric -with said boss, but at a considerable radial distance from the latter, affords a sufficient base for the said support, lessening the oblique strain" on screw B during ironing. The broad annular air-space 0 between said support and said shell surrounding said boss and surrounded by said rib greatly reduces the amount of heat conducted to the said support as compared with contact at all points of the'bottom of said support. The latter is broad enough to screen the operators hand from radiant heat. The said shell has the usual smoothing-iron outline, and its edge rests at all points on a flat shoulder D of the base or bottom D, to which it is fastened by screws D passing through registerthe same. The latter holes are threaded to engage the said screws, which thus provide for detachability' of the two parts of the iron body, though holding them firmly together.

The hollow shell 0 and base B are of cast metal, which is thicker at the broad end of the former than elsewhere and provided in the middle of the said end with a circular opening 0 to receive a cylinder or sleeve E, in which is fitted the open outer end of a metallic burner F, having three longitudinal parallel rows of small holes fin its under side and the general shape of an elongated glove finger. The upper face of the bottom part or base D is provided at D with an elongated depression of similar shape arranged to present the surface of the metal at one-half inch from the said burner. The jets of flame issuing from the three series of holes) converge in this hollow, as indicated by the arrows, the peculiar relative shape and arrangement of the parts described'insuring an intense and highly efiective heating action on the said base. A jet-block G is fitted into the outer end of the said cylinder or sleeve E and held against the outer end of the said burner by a ring G inserted in said cylinder after it. The said sleeve-burner and jet-block being then practicallya single piece are then passed into the iron, the cylinder being hardsoldered thereto in said opening C or made fast in any other reliable way. The jetblock, as usual, has air-holes 9 through it and a rearwardly-extending stem G, which is externally screw-threaded, and has an internal longitudinal bore forming a jet-hole g. A branch passage g leads through the side of the said stem and receives in its outer end the gasolene-supply pipe H. A packing-box I, having a central bore in line with that of said stem, screws on the latter and is provided with packing i. It has also an external groove or thread I, winding helically in direction opposite to that of its internal screwthread. A loose cylinder or long adjustingcap J is set over this sleeve and provided with an internal pin j, which enters'the groove I. A needle-valve K extends through the registering bores of the said grooved sleeve and jetblock to the jet-hole of the latter. Its head is is detachably, but securely, held in the head of cylinder or cap J by a keyhole-slot J therein, there being a fixed collar on the rod of the said valve at a distance from the said valve-head equal to the thickness of the said cylinder-head in order that the movement of the said cylinder in either longitudinal direction maytake the said valve with it. The fit of the said collar and valve-head against the said cylinder-head is, however, loose enough to permit the cylinder to turn without turning the valve. Asplit ring Z is slipped upon the said cylinder and clamped by a screw Z, thus fastening detachably, but firmly, on said sleeve the operating-lever M, which is integral with the said ring and provided with a convenient grasping-knob m. A lug or pin N, projecting from the proximate end of the shell 0, constitutes a stop for the travel of the said lever and sleeve in a rotary path in eitherdirection. The screwing of the grooved sleeve on the jet-block stem is so tight that the action ofthe pin jon the wall of groove I will not loosen it, and the helical form of the groove will of course compel the cylinder and valve to move outward or inward, according to the direction of motion of the said lever, thus opening or closingthe jet-hole either wholly or to the extent desired.

The supply-pipe H before mentioned extends back within the shell 0 nearly to the forward end thereof, then back again nearly to the fron t,and up through the top of the same into and through one arm of a bifurcated bent standard O,following a longitudinal passage of the same to a filtering-pocket p in the bottom of a globular gasolene-reservoir P. The connection between the said bifurcated standard and the said reservoir is made by a metallic coupling P, which constitutes a part of the bottom of the latter and screws upon a screw-threaded upwardly-extending neck 0 of the former. The said pocket is formed in the said coupling and contains ordinary filtering material p. The said standard is bent out laterally to avoid the handle A and afiord room for grasping the same, then inwardly to bring the center of gravity of reservoir P over the axis of said handle and the center of the iron body below. The top of the said reservoir is provided with a concavity 0 at the bottom of which is an opening with a beveled and curved edge 0, which receives the suspending-flange q, of similar shape and surface, at the upper end of a tubular in-.

ternally screwthreaded coupling-block Q, extending down into the said reservoir. .The top of this coupling-block is provided with an annular groove q, having a raised annular ridge q in-its middle. The bore of this block receives a correspondingly screw threaded tubular stein T of a base-block V for an airpump and air-chamber. An air-outlet valve R, pressed upward by a spring R, works up and down in the said tubular stem, its rod 0 working through a central hole 1 in a block or nut 'r, fitted into the lower end of the said stem V. There is space for the passage of air around the said rod into the said oil-reservoir when the said valve is in its highest position; but additional holes may be provided in said block for this purpose.

The block V has at its bottom a lateral annular shoulder V on which the lower edges of the pump-cylinder S and, the surrounding approximately globular air-receptacle U are fitted. It is also provided with a vertical tapering air-outlet passage 8 from said cylinder and with an oblique straight cylindrical airpassage 1) from the air-receptacle or air-chamber U to the interior of the tubular stem V. A piston-rod S, extending up through the head S of the said cylinder, isconnected to a piston S therein and reciprocates the same,

IIO

being provided with knob or handle S for the convenience of such action. Packing S is provided for the hollow lower face of the said piston. The cylinder-head S has an annular flange 25 at its periphery, extending downward to fit on a circumferential enlargement i of the upper end of the said cylinder.

The bottom of base-block V has an annular ridge x, which rests upon the ridge (1 aforesaid when the two blocks Q and V are screwed together. A ring W, of fibrous packing, is fitted into groove q, and these two ridges bite into it from opposite sides, making a tight joint. Theconcavity Q allows the air-chamber to be set lower and may be provided with packing, so that the coupling will be braced against working loose by lateral motion.

The operation is as follows: The air-pump piston is reciprocated, forcing the air into the gasoleue-reservoir through the said holes and around the stem of the outlet-valve R, which it opens also into the air-chamber. The liquid gasolene is forced out through the filter and gasolene pipe H to the jet-block and (the needle-valve being adjusted to open the jethole) flows into the burner, escaping as vapor through the holes in the bottom of the latter into the interior of the smoothing-iron. Owing to the volatile nature of gasolene a certain amount of vapor will always follow the path indicated in advance of the liquid. This is ignited through the air-holes C in the upper part of shell 0, and the flame is com m unicated at once to the holes f of the burner. The heat thus produced vaporizes the gasolene in the bent part of pipe H, which is, in effect, a generator, within the said body and supplies a continual flow of vapor to the jet-block and burner. As the base and the shell fitted thereon are heated, the radiation from every side raises the temperature of the said generator to such a degree that far more vapor is generated than the burner can consume. The remainder flows back up through the said pipe H in the form of bubbles, taking a course exactly opposite to the flow of liquid through the same. These bubbles pass up through the liquid in the gasolene-reservoir and expand into the space X at the top of the same, a certain part of the vapor also passing up into the air-chamber when its pressure becomes great enough to overcome that of the air therein. The combined pressure of the vapor thus accumulating and the air previously compressed and supplied as before stated aids gravity in forcing the liquid down through pipe H, and of course greatly accelerates the flow. The air-pump is used only in starting the iron, which at once becomes self feeding. Of course other imfiammable and volatile liquid may be substituted for gasolene and the details of the device may be varied considerably without departing from the spirit and scope of myin- 5 vention.

The valve B when in its highest or closed position cuts off the flow of air or vapor from the air-chamber or gasolene-reservoir to the pump-cylinder, or vice versa, but permits the flow in eitherdirection between the air-chamber and said reservoir. This is the normal position and arrangement of the device. When the pump is operated in starting, the air drawn into its cylinder through inlet y forces down said valve, but of course overcomes all tendency to overflow or leakage.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is p 1. In combination with the jet-block and burner of a vapor-heated implement or article, a needle-valve working through the said j et-block to control the jet, a helically-grooved fixed part, a cylinder or cap having a part that engages the helical groove, a lever provided with a ring that is clamped on said cylinder for turning the same, the said cylinder being provided with a keyhole-slot for the attachment and detachment of the said needle-valve and the latter being constructed to move forward and backward with the said cylinder while in the narrow part of the slot but easily disconnected from said cylinder through the broader part of said slot substantially as set forth.

2. In combination with a jet-block and burner, a need le-valve governing the j et-hole in said block, a helically-grooved fixed sleeve, a rotary cap surrounding and protecting the said sleeve and valve, provided with an internal stud or projection engaging said groove and operating by such engagement and rotation to move the valve longitudinally out or in according to the direction of turning, a lever attached to said cap or cylinder and a fixed part arranged to stop the turning of said lever beyond a certain point, the said valve being provided with two enlarged parts at or near its head and the said cap being provided with a keyhole-slot to receive the smaller intervening part of the valve substantially as set forth.

3. In combination with the jet-block and burner of a vapor-heated article or implement, a needle-valve working through the said jet-block to control the jet, and a rotary cap, engaging the said valve to provide for endwise motion when rotated and having a keyhole-slot in its outer end, the said needlevalve being provided with a head and fixed collar having a space between them approximately equal to the thickness of the head of the said cap or cylinder in order that it may move in and out with the said cap and be readily attached to or detached from the same substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

. WILLIS MITCHELL.

Witnesses:

LOUIS O. SOUTHARD, OTIS EDDY.