US929614A - Pyrographic burner. - Google Patents

Description

C. U. MACY.

PYROGRAPHIG BURNER.

APPLICATION FILED JAN.26, 1909.

929,614. Patented July 27, 1909.

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CHARLES U. MACY, OF IRVINGTON, NEW JERSEY.

PYROGRAPHIC BURNER.

To all 107mm. it may concern:

Be it known that I, CHARLES U. MACY, a citizen of the United States, residing at Irvington, in the county of Essex and State of New Jersey, have invented certain Improvements in Iiyrographic Burners, of which the following is a specification.

The objects of this invention are to secure a pyrographic burner body-portion, or lug, as it is commonly called in the trade, which shall serve as a blower to also disperse the smoke, to thus si nplify the use of a blower in connection with a pyrographic burner, and locate the blowing orifices as close as possible to the shell or burner tube to provide for the exhaust or vent of the burner through such blowing apertures, and thus economize gas; to secure a simple and inexpensive construction, and to obtain other advantages and .results as may be brought out in the following description.

Referring to the accompanying drawings, in which like numerals of reference indicate corresponding parts in each of the several figures, Figure 1 is a side elevation of a burner embodying my improvements in the preferred form, and Fig. 2 `is a central longitudinal section of the same; Fig. 3 is a central longitudinal section of a modified construction, and Fig. 4 is another central longitudinal section of a still further modification.

In said drawings, 1 indicates the body portion or lug of a pyrographic burner, pro vided at one end with a threaded portion 2 adapted to bev screwed to a handle (not shown), and having an exterior milled flange 3 to facilitate suoli attachment. An inner tube 4 extends longitudinally of the lug through central passage thereof, and serves to convey fuel or gas to the shell or burner tube 5, inside of which tube said gas or fuel burns. The said shell or burner tube 5 is secured to the lug or body portion 1 in any suitable ordinary manner, as at 6, and at its forward extremity 7 is adapted to perform any desired hind of work, as is common. The said inner tube 4 fits tightly in the central passage 8 of the lug at the rear end or threaded portion 2 thereof, but for all the rest of the length of said longitudinal pas sage, the tube is reduced radially, as at 9, so as to provide an annular space between the inner tube 4 and the lug, as clearly shown in Fig. 2 of the drawing. Just back of the milled flange 3, a groove 10 is cut in the lug,

Specification of Letters Patent.

Application filed January 26, 1909.

Patented July 27, 1909.

Serial No. 474,284.

and through the bottom of said groove holes 11 are drilled into the central passage of the lug. ther holes 12, preferably two in number as shown, are drilled from the front ofthe flange 3 through into the said groove 10, and a thin sleeve 13 is forced tightly onto the grooved portion of the lug bach of the flange 3, to close the groove 10 from the outside.

The shell or burner tube 5 does not have in its side the usual vent or exhaust orifice, but the gaseous products of combustion pass backward through the space between the inner tube 4 and surrounding lug, to the holes 11, and from thence through the groove 1l) and discharge orifices 12. Currents thusissue from said discharge orifices which serve to blow away the smoke created by the use of the tool. Under some conditions the inner tube 4 may be omitted, and a vent 'o ening provided in the shell or burner tu Je, in which case gas blows out through the orifices 12 to dispel the smoke. This, though not so economical, is entirely satisfactory as far as clearing away smoke is concerned.

In Figs. 3 and 4 I have shown modifications in which no inner tube is employed, as `iust referred to. In Fig. 3, the lug is in two sections 21, 22, the forward section 21 being centrally chambered or hollow at its rear end behind the [lange 23, as at 24, and into this chamber 24 is forced the head 25 of the rear section 22. Said head, however, does not reach to the bottom of the chainlier 24, but leaves a space 26 thereat, into which space blow holes 27 open from in front of the flange 23. Ioth sections 21, 22 are bored out centrally and longitudinally to provide a passage leading to the shell or burner tube 23. In Fig. 4 a groove 314 'is formed in the exterior of the lug 32, and borings are made through the bottom of this recess into the longitudinal passage 34 of the burner, as at 33. Other holes or discharge orifices 35 also lead from said groove forwardly through the body of the lug, and said groove 31 is closed exteriorly by a ring 36 pressed part way into it and forming at its outer edge a milled. or roughened finger hold for turning the lug to screw its rear end into the handle. Some of the gas passing along the duct 34 to the shell 37, therefore, blows out through the holes 33, groove 31 and orifices 35.

Having thus described the invention, what I claim isz.

1. A pyrographic burner, comprising a body-portion or lug adapted at one end to receive a handle and at its other end a shell or burner-tube and having a eentral longitudinal passage with a branch passage opening through the side of the lug intermediate of its said ends and directed forwardly, and said shell or burner tube.

2. A pyrogmphic burner, .Comprising a body-portion or lug adapted at one end to receive @handle and abit-,s other @ad a 'shell or burner-tube, and having a .Central longitudinal passage, the charnber of said passage being intermediate of its ends thereof extended radially outward from said passage, said lug having a reduced forward end POrtOn forming annular shoulder and blow holes bored through said shoulder into communication With said radial extension of the passage, and saiClShell or burner tube.

3. In a pyrographic burner, a lug adapted at its rearzend to be rsecured to a handle and at its forward end to receive a shell or burnern tube, said lug having an exterior groove intermediate of said ends, a passage leading rorn said groove into said longitudinal passage, and other passages leading l'rorn said groove forwardly outward through the sur- Olf the lug, ,means for closing said groove outwardly, and said shell or burner-tube.

leading from said space outwardly and for-- Wardly through the sides of the lug.

5. yIn a pyrographio burner, the combination with a body portion or lug having a rearward reduced portion adapted to con nect with a handle and a `forward reduced end providing a shoulder, said lug being bored centrally and longitudinally ,and having passages leading from said boring out through the 'front wallof saidl shoulder, a shell or Vburner tube fixed to the forward end of the lug, and an inner tube fitting tight in the rear portion oi' the central boring of the lug and being loose therein i'or its forward portion, said tube eXtending into said shell.

.y CHARLES U. MACY; In the presence oil- RUssELL M. EVERETT, FRANCES E. BLODGETT.

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