US658291A

US658291A - Blowpipe.

Info

Publication number: US658291A
Application number: US73768099A
Authority: US
Inventors: Friedrich Speidel
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-11-20
Filing date: 1899-11-20
Publication date: 1900-09-18
Anticipated expiration: 1917-09-18

Description

4 no. 658,29l. Patented sept. la, |900.

F. SPEIDEL.

BLUWPIPE.

(Application le'd Nov. 20, 1899.)

(N0 Modbl.)

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Elven/7307 me Noam: Frans co, Pucounw.. wAsNlncmJu. n. c.

UNITED STATES PATENT OFFICE.

FRIEDRICH SPEIDEL, OF PFORZHEIM, GERMANY.

BLOWPIPE.

SPECIFICATION forming part of Letters Patent N o. 658,291, dated September 18, 1900. Application filed November 20, 1899- Serial No. 737,680. (No model.)

To all whom, it Wawy concern:

Be it known that I, FRIEDRICH SPEIDEL, a subject of the Emperor of Germany, and a resident of Pforzheim, Germany, have invented certain new and useful Improvements in Blowpipes, of which the following is a specification.

The object of this invention is to provide an improved gas-blowpipe by means of which the gas-supply may be controlled at will and which is normally cut of, so that no gas can gain access to the main tube of the blowpipe, while a small secondary or pilot flame or jet may be kept constantly1 burning, so that the blowpipeis always ready for use.

ln the accompanying drawings, Figure 1 is an outside view of the blowpipe. Fig. 2 is a longitudinal section of the blowpipe, the latter being turned to an angle of forty-five degrees. Fig. 3 is a section of the valve. Fig. 4 is a section of the valve-seat with the valve put in its place. Fig. 5 is a detail View showing a means employed to lock the valve in adjusted open position.

Into the gas-inlet pipe a of a blowpipe b, which in other respects'is constructed like an ordinary blowpipe, there is provided according to this invention a transverse passage or chamber c, closed at one end and open at the other end and provided with a port or passage leading to blowpipe proper. Fitted to slide wit-hin this passage or chamber is a valve d, which is forced outward by a spring e, so as to normally cut olf the gassupply to the blowpipe. The chamber c forms a part of or is attached to a coupling n, in one end of which the blowpipe b is secured, and in the other end a gas-delivery pipe o is secured. A pipe t is supported within the pipe o and communicates at its rear end with the pipe b and conducts air therefrom to the delivery end of the pipe o. A passage p is formed in the coupling n and affords communication between the interior of the coupling and the chamber c.

When it is desired to use the blowpipe, it is only necessary to press inward thev projecting end or knobf of the sliding valve against the resisting action of the spring to cause perforations or ports therein to coincide with similar perforations, ports, or passagesgin the gas-inlet pipe ct, so that the gas may freely enter the blowpipe. When pressure on the knob f is released, the valve will return under the expansive action of the spring to its normal position, in which the supply of gas to the blowpipe is cut off. In the gas-inlet pipe is secured asmall gas-tube 7L, the discharge end of which is situated in close proximity to flame-orifice of the blowpipe, where it forms a constantly-burning gas-jet, while the main supply of gas is cut off from the blowpipe b v means of the valve. By pressing upon the valve, as before described, gas is admitted into the main gastubeoof the blowpipe, which becomes ignited by the pilot-jet. Air is supplied to the delivery end of the pipe o through the pipe and the blowpipe is then ready for use. By this arrangement the gas supply may be varied by Vapplying moreV or less pressure to the valve and a considerable saving of gas is insured.

In cases wherethe blowpipe is required to be in almost constant use with a flame of a predetermined degree of heat I provide an arrangement for adjusting the position of the valve and retaining it in the adjusted position. Fig. shows such an arrangement. A rod k is fitted to slide in a sleeve or socket Z on the blowpipe, the said rod being attached to or engaging with the projecting end or headfof the valveV d, so that by adjusting the position of the rod in the sleeve or socket the valve can be pressed more or less into its seat to regulate the passage of gas into the blowpipe and be fixed in its adjusted position by any suitable means-such, for eX- ample, as a pinching-screw m, securing the sleeve or socket against the rod. The rod k may be secured by soldering or otherwise to the valve-headf, or it may be provided with a bent end to bear on the said valve-head f.

I claim- In a blowpipe, a gas-delivery pipe, a gas-inlet pipe having a transverse chamber communicating with the gas-delivery pipe, a sliding valve seated in said chamber to control the communication between the inlet and outlet pipes, a spring engaging the valve and IOO normally tending no force it outwardly to In testimony whereof I have signed my closed position, n, sleeve mounted on the biowl name to this specification in lthe presence of pipe, a rod siidably supported in the sleeve, two subscribing witnesses.

a heed on the rod engaging the outer end of FRIEDRICH SPEIDEL. 5 the valve, and a. pinching-screw to look the Vitnesses:

.rod in the sleeve, substantially as and for the LUDWIG SCHWEITER,

purpose seb forth. HERMAN '/VAGNER.