US415613A

US415613A - Blow-pipe lamp

Info

Publication number: US415613A
Authority: US
Publication date: 1889-11-19
Anticipated expiration: 1906-11-19

Description

(No Model.)

W. P. BUTLER.

BLOW PIPP LAMP.

. Patented NV. 19, 1889.

III! .Illllllll Ill! N. PETins, Phme-mhugrapher, wmmngmn, D; C.

UNITED STATES PATENT OFFICE,

lWILLIAM P. BUTLER, OF CHICAGO, ILLINOIS.

BLOW-PIPE LAMP.

SPECIFICATION forming part of Letters `Patent No. 415,613, dated November 19, 1889.

i Application led June 8, 1889. Serial No.313,582. (No model.)

To all whom t may concern: i

Be it known that I, WILLIAM P. BUTLER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Blow-Pipe Lamps, of which the fol- 'or condense air for the purpose of forcing gasoline to the vaporizer of the burner.

The main object of my invention is to provide a novel blow-pipe lamp which can be practically and efciently worked in an inverted position or upside down for a considerable time, which has been found very desirable in order to operate on objects or in places where the iixed burner on the top of an ordinary blow-pipe lamp could not otherwise be applied.

This invention also has for its object to provide a blow-pipe lamp of the type alluded to with novel means for preventing the gasoline and the vapor thereof from gaining access to the reciprocating plunger and the cylinder of the air-pump mounted on the tank.

These objects I accomplish by the features ot' construction and combination of devices hereinafter described andclaimed, reference being made to the accompanying drawings, in Which Figure 1 is a sectional side elevation of a blow-pipe lamp embodying my invention. Fig. 2 is a top plan view of the same, and Fig. 3 is a broken sectional view showing the lower end of the air-pump.

In order to enable those skilled in the art to make and use my invention,I will now describe the same in detail, referring to the drawings, wherein- 'lhe numeral 1 indicates the portable gasoline tank or vessel having in its cover or top wall 2 an orilice closed by a screw-threaded or other plug or stopper 3, for supplying the tank with gasoline or other combustible liquid. The cover or top wall is also provided with a screw-threaded orifice et, with which ,other spring 17.

vided near its upper end-With an air-'inlet' orifice 11, and contains a packed plunger 12, secured to the lower end of the plunger-rod 13. The lower end Wall of the pump-cylinder is provided with a port in which works the guide-stem 14 of a downwardly-opening valve' l5, which is adapted to be seated upwardly against thebottom Wall of the cylinder to close the port through the medium of a cupshaped cap 16, moved upward by a coiledor The communication between the air-tube 8 and the valve-casing 9 is constantly open; but the spring and valve close the valve-port each time the pumpplunger is raised. y

The air-valve casing 6 contains a rotary valve 18, having in one side a longitudinal groove 19, forming aport, which is parallel to the axis of the valve, so that when the latter is axially rotated to lthe position shown in Fig. 1 the groove communicates at one end with the nipple 5 and at the opposite end with the -neck 7 for the passage of air into the tank above the surface of the gasoline therein contained. The air-pump cylinder is 'arranged in a vertical position at one side of the tank, and is supported on the latter through the medium of upper and lower rigid brackets or arms, so that the pump is sustained entirely independent of the air-tube 8.

To the cover or top of the tank is rigidly fixed, by a screw-threaded connection, the vapor-burner consisting of the perforated shell 20, packing-tube 21, needle-valve 22, and oil cup or receptacle 23 for starting the burner, as is ordinarilypracticed in this type of lamp.

The packing-tube of the burner connects with a tubular neck 2t, depending from the cover or top wall 2, and to this neck is secured a vertical secondary oil-reservoir 25,

IOL)

- sion should demand.

open at its lower end to the interior of the tank by means of a supply-tube hereinafter d escribed. This secondary reservoir is shown as composed of a tube of uniform diameter and circular in crosssection, and at its upper end is in constant communication with the vaporizer of the burner. An oil conveying or supply tube 26 .is arranged in the secondary reservoir and passes through a disk 27, which is in contact with the internal surface of the reservoir, such supply-tube being of less diameter than the secondary reservoir, and rising up and within the latter, so that the combustible fluid flowing into the supplytube will overiiow at its upperl end into the secondary reservoir. The construction is such,

as will be obvious, that even though the supply of iiuid in the tank be exhausted the apparatus can still be inverted and worked with the combustible fluid that has previously passed into the secondary reservoir, if o cca- The object of this construction is to provide a supply of oil in the secondary reservoir below the burner that will permit the lamp to be inverted or turned upside down, and then be practically used for a considerable length of time in such inused in localities where the burner could not otherwise be applied.

Having thus described my invention, what I claim is- 1. In a blow-pipe lamp, the combination, with a portable oil-tank having the tube of a vapor-burner attached and rising from its top portion, and means for compressing air in the tank to force oil to the burner, of a secondary oil-reservoir having its upper end connected with the tube of the burner at the top portion of the oil-tank, and an oil-supply tube rising within the secondary reservoir to lill the latter with oil from the tank for feeding the burner when the tank is inverted, substantially as described.

2. In a blow-pipe lamp, `the combination, with a portable oil-tank having a vaporburner attached to its top portion, of a secondary oil-reservoir suspended within the tank from the cover or top wall thereof and connected at its upper end with the burner through the top portion of the tank, and a I supply-tube for supplying the secondary res'- ervoir, substantially as described.

In a blow-pipe lamp, the combination, with a portable oil-tank having a vaporburner, of a secondary oil-reservoir suspended within the tank and containing within it an g oil-tube for conducting oil into the secondary reservoir and permitting the lamp to be operated in an inverted position, substantially as described.

4. In a blow-pipe lamp, the combination,

nected at its lower extremity to the pump,

substantially `as described.

5. In a blow-pipe lamp, the combination, with an oil-tank having a burner connected with its top portion, of an air-pump having its cylinder arranged in avertical position at one side of the tank and supported thereupon by upper and lower rigid brackets, a tubular 4air-valve ycasing having a neck and provided with a nipple connected with the tank-cover, a rotary valve-plug having a longitudinal port for connecting at one end with the nipple and at the other end with the neck of the casing, and an air-tube secured at its upper end to said neck of the casing and yextending downward to and connected with the lower end of the air-pump, substantially as described. Y

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

NVILLIAM P. BUTLER. Vitnesses:

V. HENKEL, W. KA.Ui/[Hernan