US2473435A - Blowpipe for heating tools - Google Patents

Description

June 14; 1949. c, LUZADER, 5 2,473,435

BLOWPIPE FOR HEATING TOOLS 7 Filed Sept. 21, 1946 Inventor WWW Patented June 14, 1949 STATES PATENT OFFICE BLOWPIPE FOR HEATING TOOLS Bert C. Luzader, Sr., Jonesboro, La.

Application September 21, 1946, Serial No. 698,555

2 Claims. 1

This invention relates to new and useful improvements and structural refinements in blow pipes, and the principal object of the invention is to provide a device of the character herein described, such as may be conveniently and effectively employed for heating soldering irons, preheating furnaces and for other similar uses.

A further object of the invention is to provide a blow pipe which is simple in construction, highly efficient in operation, and which will not easily become damaged.

Another object of the invention is to provide a blow pipe which embodies in its construction means for supporting the soldering iron with which it is used.

An additional object of the invention is to provide a blow pipe which will readily lend itself to economical manufacture.

With the above more important objects in view, and such other objects as may become apparent as this specification proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure 1 is a perspective view showing the invention in use.

Figure 2 is a longitudinal cross sectional view of the invention per se, and

Figure 3 is a cross sectional view, taken substantially in the plane of the line 3-3 in Figure 2.

Like characters of reference are used to designate like parts in the specification and throughout the several views.

Referring now to the accompanying drawings in detail, the invention consists of a blow pipe designated generally by the reference character ill, the same embodying in its construction two longitudinally aligned sections of pipe H and I2 constituting a tubular body designated by the ref erence character l3. The section II is closed at one end thereof as at M, while its remaining end is provided with a baffle plate l5 perforated as at it.

One end of the section 12 is open as at IT, while its remaining end is formed with a flange l8, whereby the section 12 is secured to the plate l5 of the section H by means of suitable bolts and nuts l9.

The interior of the section H forms an air chamber 2B, while the interior of the section l2 forms a combustion chamber 2|. An air supply line 22, provided with a control valve 23 extends through the closed end I of the section II and communicates with the air chamber 20, as will be clearly apparent from the accompanying drawings. A gas line 24, equipped with a control valve 25, also enters the chamber 20 through the closed end l4 and extends longitudinally therein, the free end portion of the tube 24 constituting what may be referred to as a Venturi tube 26. It will be noted that this Venturi tube extends through the bafile plate l5 into the combustion chamber 2 I, as is best shown in Figure 2.

The lateral wall of the pipe section I2 is also provided with a plurality of auxiliary air openings 21. The body I3 is supported in an inclined position, that is, with the chamber 2| elevated with respect to the chamber 20, by means of suitable brackets 28 and 29, the former assuming the form of a simple shank secured adjacent the closed end of the section II, while the latter is arcuated as shown in Figure 3 and is secured by means of a substantially U-shaped clamp 30 to the body l3. In effect, the clamp 30 spans or straddles the bafile plate l5 and the flange l8, and is rigidly secured thereto by means of one of the aforementioned bolts [9.

Means are also provided for supporting a soldering iron 3| at the open end l1, that is, at the mouth of the chamber 2!, said means consisting Of a substantially Z-shaped bracket, or a reverse angle bracket 32. One of the free arms of this bracket is secured to another of the bolts l9 as will be clearly apparent from the accompanying drawings, while the remaining free arm of the bracket is forked as at 33 to receive the shank or shaft of the soldering iron.

When the invention is placed in use, the air pressure in the chamber 20 will be relieved through the openings or passages l6, thereby facilitating efficient combustion of the gas from the tube 26in the chamber 2 l It is believed that the advantages and use of the invention will be clearly understood from the foregoing disclosure and accordingly, further description thereof at this point is considered unnecessary.

While in the foregoing there has been shown and described the preferred embodiment of this invention it is to be understood that minor changes in the details of construction, combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as claimed.

What I claim as my invention is:

1. A blow pipe comprising two longitudinally aligned sections separably connected together and constituting a tubular body, a perforated baffle plate interposed between the adjacent ends of said sections, one of said sections being closed at the free end thereof and forming an air chamber, the remaining section being open and forming a combustion chamber, an air supply tube communicating with said air chamber, a tube having a venturi positioned axially in said body and extending through said plate into said combustion chamber, said Venturi tube adapted to be connected to a source of gas, a control valve provided on each of said tubes, the lateral wall of said combustion chamber being formed with a plurality of openings, brackets for supporting said body, and a further bracket attached to said baflle plate and adapted to support a soldering iron at the mouth of said combustion chamber.

2. A blow pipe comprising two longitudinally aligned sections separably connected together and constituting a tubular body, a perforated baiile plate interposed between the adjacent ends of said sections, one of said sections being closed at the free end thereof and formin an air chamber, the remaining section being open and forming a combustion chamber, an air supply tube communicating with said air chamber, a gas sup- REFERENCES CITED The following references are of record in the v file of this patent:

UNITED STATES PATENTS Number Name Date 320,461 Cowen June 23, 1885 585,641 Dupee June 29, 1897 1,329,641 Stahlman Feb. 3, 1920 1,915,056 Fichter June 20, 1933

Images