US40376A - Improvement in gas blow-pipes - Google Patents

Description

A. H. Woon.

GAS BLOWPIPE,

10.40.370 Patented oct. 20, 1863.

UNITED STATES ALONZO H. WOOD, OF BOSTONV MASSACHUSETTS.

IMPROVEMENT IN GAS BLOW-PIPES.

Specification forming part of Letters Patent No. 40.376 dated October 20, 1863.

To all whom 'it may concern Be it known that I, ALONZO H. WOOD, of"

Boston, in the county of Suffolk and State of Massachusetts, have invented an Improved Gas Blow-Pipe, of which the following isy aJ full, clear, and exact description, reference bet ing had to the accompanying drawings, mak ing part of this specification, in which- Figure l is a perspective view of my im-r proved apparatus. Fig. 2 is a vertical section through the same; Fig. 3, details to be referred to hereinafter.

My invention relates to that class of blowpipes in which ordinary illuminating-gas is burned, and which are used by jewelers and other workmen on .the bench for soldering and other purposes where an intense heat is're quired; and it consists, first, inthe employment of one or more reservoirs forfcontaining water or other volatile substances, provided with a means for heating the same so as to generate vapor, which is commingled with the gas and il'ame, and adds to the intensity of theheat; secondly, in a peculiar device, which, by nearly excluding the air from the gas before it is burned, causes the flame (which, when used i'or heat, is nearly colorless) to be changed so as to emit a bright light, which can be used i'orilluminating purposes by the workman when required.

To enable others skilled in the art to understand and use my invention, I will proceed to describe the manner in which I have carl ried it out. l

In the accompanyingdrawings, A is the base, which 'is made hollow, so as to form reservoir for water or other volatile substance, which is poured in at an opening providedv with a screw-plug, u.v A passage, b, for the vgas is formed iu the base A, which terminates in a tip or delivery, c.' At the other end this passage is tapped, and has` screwed into it a short pipe, B, to which the gas is conducted by a exible pipe or other suitable means,

and the pipe B is furnished with a'iregulator,

C, so as .to regulate the supply of gasi D is a cap, which is screwedyinto the top of the base A, and is furnished with prongs or arinsd, which extend down into the water, as seen in Fig. 2, for a purpose that-will be hereinafter described.I This 4cap D is provided with holes e, for the purpose of admitting air,

which is commingled with the gas before itis burned, and thus greatly intensifies the heat ot' the iiaine. A screw -thread is turned within the'center of this cap-piece D of asize` .sufficient to' admit the screw-thread on the lower end of the upright tube or pipe E, of brass or other suitable metal. Another circular cap, F, tits on the lower end of this tube, and' can move up and down thereon, so as to expose or cover the holesc of the lower cappiece, D. The cap F has its edge milled for.' ease of raising and lowering the same. Whenu the cap F is' screwed down to cover the holes `e of the cap D, air is only admitted through the holes f in the cap F, and passes into the annular cavityon its under side and through the holes e, a small supply. of air being nec essary for the proper combustion of the gas and to prevent it from smoking when used in so large a jet or delivery. v v

. For the purpose of still further reducing the supply of air, a circular plate, 9 is fitted over the capv F, and is furnished with holes h. This plate g may be turned so as to bring the holes h immediately over the holes f, or so as to-'close or partially close them, and may be then secured in place by the screw-nut z', which works on a screwlthread on the upper part ot' the cap F. E.

k are wires passing through flanges l and m, surrounding th'etube E, and serve to transmit the heat to the tube E and prongs d, Fig. 2, for the purpose of heating the water so as t'ov produeevapor, which is eommingled with the gas to add to the intensity of the-heat. I have found that without these .wires k the lower portion of the tube E will remain cool.

Whenla less degree of heat is required, the

size of the orifice at the top of the tube E may be contracted by inserting a tube, a, having an opening of the sine desired,'as seen in Fig;v 3. y

H is another receptacle for holding water or other volatile substance, surrounding the tube E and wires k, and is suspended on the angem by -a turned edge at its top. The

water'withiu'- this reservoir E receives heat 'through the Casin g o, from the radiation of the heat of the wires k, and through the ange m. It is obvious that the reservoirs may be used separately ortogether, as may 'be'desired It will be seen that the vapor from the res-l ervoir H is mixed with the flame outside of the tube E, while that from the reservoir A is mixed with thc gas inside the tube E.

Operation: Thereservoirs being filled withV water or other volatile substance, a supply of gas is admitted into the passage b and through the tip cinto the tube E, the cap F being screwed up so as to admit air through the holes c, which passes between the prongs d, and is then mixed with the gas as it rises in the tube E, at the top ot' which it is burned, producing a flame which is nearly colorless and possesses an intensedegree of heat. The wires 7c extend into the flame, and thus transmit heat to the tube E and prongs d and to the casing o and flange m,which heats the Water in the reservoirs, generati ng vapor, Which, as it rises, is commingled with the gas and flame for the purpose ot' still `further intensif ying the heat. The flame may be instantly changed, so as tov emit a bright light when required, by screwing down the cap F so as to cover over the holes e, a small supply of' air, sufficient to prevent it from smoking, being a means of heating the same, so as to producey vapor to commingle with the gas and tlame for the purpose of' intensifying the heat, substantially as described.

2. The cap F, provided with holesf, and so arranged as to control the admission of air through the holes c, in the manner and for the purpose substantially as herein described.

A. H. WOOD.

Witnesses:

Tiros. R. Renon, P. E. Tnscnmmonnu.

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