US424024A

US424024A - Lings

Info

Publication number: US424024A
Authority: US
Publication date: 1890-03-25
Anticipated expiration: 1907-03-25

Description

(Model.)

W. R. 8v J; J. RAWLINGS.

BLOW PIPE.

@l Jhn 7 Rawh'ngs Patented Mar. 25,1890..

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UNITED STATES PATENT OEEICE.

WILLIAM R. RAWLINGS AND JOHN J. RAIVLINGS, OF SOUTH KENSINGTON,

` COUNTY OF MIDDLESEX, ENGLAND.

BLOW-PIPE.

SPECIFICATIONforming part of Letters Patent No. 424,024, dated March 25, 1890. Appneetie ned Mey 29, 188s. senti Ne. 275,450.Y (Medel.) Patented in Euganei April 21, 188s, Ne. 5,950.

be kept burning in the intervals of use-as a pilot-light-and in which the volume and intensity of the flame may be easily controlled at will by a single cock or valve.

There is appended hereto a sheet of drawings, to which reference is hereinafter made, and in which- Figure 1 represents a longitudinal View, and Fig. 2 a cross-section at A B, Fig. 1, of a blow-pipe constructed according to our improvements. Fig. 3 is a diagram of the ways Y or channels in the plug of the cock. Fig. 4

is a plan of the jet-nozzle, and Fig. 5 represents a modified form of the front end of the apparatus. f

In each of the figures similar elements and details are indicated by similar letters.

C is a tubular casin g, at one end of which is the valve or cock D and the air-inlet E.

At the opposite end of the apparatus is the nozzle F, whichfis inclosed by a perforated metallic tube .or truncated cone G, Within which and around the nozzle is a deflectingcone H.

Within the casing there is a curved wicktube I, an air-tube J, and a j et-tube K, which passes through the center of the wick-tube to the nozzle F, where it is terminated by the jet in the center of the nozzle. l

The nozzle for filling the liquid fuel into the apparatus may be formed inany convenient position; but we prefer to form it in the outer casing and between the mid-length of the apparatus and the cock, as at L. This lnozzle is closed when the apparatus is not being filled with the liquid fuel, and it isshaped to point toward the cock orv valve, as shown in Fig. l.

The wick-tube I terminates with an open end at a short distance from the valve end of the apparatus, and the air-tube similarly terminates at a short distance from the ,nozzle end. A cotton wick I is placed in the Wick-tube, fibrous material C-such as asbestus-is loosely packed in and around the tube, so as to fill the casing, and a small quantity of porous or fibrous material P such as asbestus-is packed within the defiecting-cone I-I and around the nozzle F.

The liquid fuel we prefer to employ is the light petroleum-oil known as benzoline To fill the apparatus the inlet-nozzle cap L is removed and the apparatus is held Vertically with the jet end downward. The fuel is then poured into the casing until it appears within the nozzle or until it is considered that a sufficient quantity has been supplied. The apparatus is then inverted, so that any fuel not absorbed by the fibrous packing will run out through the inlet-nozzle, which is then closed. By this arrangement it will be evident that the liquid cannot under any ordinary conditions enter the wick-tube, and that it cannot by any other means reach the j et-nozzle.

The valve or cock is constructed with three ways, passages, or channels, by one of which air is .admitted to the valve or cock, by another air is admitted to the jet-tube, and by the third air is admitted to the air-tube.

A convenient method of construction of a cock is represented in the drawings, in which a is a channel cut in ,and surrounding the plug, b is a short channel coincident with and controlling the inlet to the jet-tube K, and c is a channel similar in all respects to b, but commencing at a point in or about a vertical line with the termination of h and coincident with and controlling the inlet to the air-tube J. There is a channel or means of communication in the plug or in the body of the cock between a, b, and c.

The action of the cock or valve is as follows: Let the inlets to the air`tube and to the jet-tube both be closedby the solid part of the plug of the cock, and let alight be aproo able that the supply of air to the jet-tube plied to the nozzle, so as to ignitethe vapor of the liquid fuel issuing therefrom; let also a suitable supply of air-pressure be connected to the air-inlet E. If, now, the valve or cock is turned, as shown in Fig. 1,air will first en- Vter the jet-tube and create a lsmall blow-pipe iiame at the jet which will be projected beyond the protector G. The valve being further turned, the channel c opens to the airtube, through which air is consequently admitted to the apparatus, and in passing through the saturated fibrous material and the wick-tube, which'it lenters at the end nearest the valve, becomes highly charged with the hydrocarbon vapor from the liquid fuel before issuing through the nozzle, from which a flame of large dimensions is pro;- jected, the character and dimensions of the llame being controlled by the amount of rotation of the valve and -by the air-pressure. The channels in the valve are preferably diminished from the middle to the extremities,

so as to secure gradual admission and cut-off and to enable the amount of air passing to be controlled with greater delicacy.

Although we have described an arrange'- l men-t byv which the supply of air to the jettube is not cut oif until the air-tube is fully opened, we do not bind ourselves to this arrangement, as in some cases it may be desirw should be out oif before or at the time the air-tube is opened. NVhen the air-supply to both the tubes is cut oif, the vapor of the liquid fuel continues to issue from and burn at the nozzle, acting as a pilot-'light between the'periods of use. The protective perforated tube or conel G prevents the pilot-light being extinguished by the wind, and therefore ren'- Y ders the apparatus adaptable for use in exposed positions.' Any liquid fuel which may from any cause condense at or issue from the nozzle is immediately absorbed by the fibrou's materials under the deflecting-cone H, where it is gradually vaporized and burned bythe flame.

We prefer to construct the nozzle of a series of small short tubes F, arranged around the jet, as in Fig. l, and as shown in plan in Fig/t. VThe spaces between these tubes and betweenv the tubes and the jet and wick tube may bejtightly packed with' asbestus, or may K be filled or otherwise closed with metal.

The jet-tube may, instead of being constructedl and arranged as represented in the drawings, be included within the Wick-tube air-tube and the jet-tube mayjin-this case'v terminate in a removable plate'or in a fixed skeleton framing or bar N. f

A cap or extinguisher G (shown in `dotted lines) may be placed over the jet to prevent evaporation of the fuel when the is not in use.

Having now particularlydescribed and as-f certained the `nature of our said yinvention and in what manner the same is to be performed, We declare that what We claim isl. In a blow-pipe apparatus, the combination, with a casing containing an absorbent filling, of a wick-tube arranged therein hav- 1 ing a nozzle at one end and extending from the nozzle to a point near the opposite end of the casing, a wick contained in said wicktube, an air-tube arranged between the wicktubeA and the casing havingv one end adapted for connection with an airsupply and its 4other endlying near' the nozzle, and a jettube also adapted to receive a supplyl of air l and having its delivery end lyingwithin' the apparatus nozzle end of the wick-tube, substantially asV described.

2. The combination, with a casing adapted to contain a supply of hydrocarbon iiuid, of a wick-tube containing a wick arranged in said casing and projectingttherefrorn at one end, an air-tube lying between the casing and 3 the wick-tube and terminating near the pro-l jecting end of the wick-tube, a'jet-tub'e also within the casing and having its j et-del'ivery arranged Within the projecting end of the Wick-tube, a three-Way cock controllingboth l the air-tube and the jet-tube, and'ineansv forl I conveying a supply of air to said tubes, substantially as described.

3. The combination, with a casing adapted v to'contain a supply of hydrocarbon` fluid, of

a wick-tube containing a wick arranged in said casing and having at one end a' nozzle projecting from' said casing, a fru'sto-conical delector surrounding the nozzle, an absorbent packing between the nozzle and the delector, and means for delivering airlinto the casing near the nozzle end of the Wick-tube, substantially as described.

4. The combination, with a casing containing an absorbent iilli-ng, of a Wick-tube 'arlranged therein containing a wick andl having at one end a nozzle projecting from said casing, an air-tube delivering air into the cas- Ioo IIO

ing near the nozzle Y end of the wick-tube, ai jet-tube delivering air to the nozzle, a'three- Way cock controlling the supply of air to the air-tube and the j et-tube, a frusto-coni'cal deflector surrounding'the'nozzle, and a perforated open-ended shield surrounding thedeflector, substantially as described.

5'. The combination,with the casing @,having the curved iilling-nozzle L near its middle, of a Wick-tube I, arranged'Withinthe'casing, provided with a wick I', and a projecting nozzle, a filling or packing 'of fibrous -mate- In testimony that We claim the foregoing as our Yinvention We have signed our names, in presence of two Witnesses, this 9th day of May, 1888.

W. R. RAWLINGS. J. J. RAWLINGS.

Witnesses:

J. R. OOLLETT, WILLIAM FRANCIS.

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