US2627905A - Fluid fuel burner and paint scraper - Google Patents

Description

Feb. 10, 1953 R. A. MANGlERl 23 3 FLUID FUEL BURNER AND PAINT SCRAPER Filed May 23, 1949 2 SHEETSSHEET 1 Fig.

Inventor Roy A. Mangien' Feb. 10, 1953 R. A. MANGIERI FLUID FUEL BURNER AND PAINT SCRAPER 2 SHEETS-SHEET 2 Filed May 23, 1949 I n Ventar Ray A. Mangieri B, 2mm

Patented Feb. 10, 1953 UNITED STATES PATENT OFFICE 2,627,905 FLUID FUEL BURNER AND PAINT SCRAPER Bay A. Mangieri, New Kensington, Pa.

Application May 23, 1949, Serial No. 94,797

3 Claims. 1

The present invention re ates to new and useful improvements in paint scrapers and more particularly to a hand scraping tool constructed with a burner to soften the paint on a painted surface to facilitate its removal by the scraper.

An important object of the invention is to provide a shell for the burner in which the heat is pocketed and providing the shell with an open bottom to subject the painted surface to the heated air and gases contained in the shell and to form the rear edge of the shell with a scraper blade and by means of which the painted surface is first heated and then scraped as the tool is moved over the work.

Another object of the invention is to provide a novel burner construction enclosed in the shell and including a reservoir to which fuel is supplied through the handle of the tool and providing orifices in the reservoir with regulating valves for the orifices to control the burner.

A still further object is to provide a burner having a vaporizing chamber beneath each burner orifice and into which the fuel from the reservoir is supplied and consumed and providing the vaporizing chambers with open bottoms to direct the flame therefrom downwardly onto the work.

A still further object is to provide a device of this character of simple and practical construction, which is eficient and reliable in operation, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a top plan view;

Figure 2 is a side elevational view;

Figure 3 is a front elevational View;

Figure 4 is an enlarged longitudinal sectional view taken on a line ti of Figure 1;

Figure 5 is an enlarged transverse sectional View taken on a line 55 of Figure 2, and

Figure 6 is an enlarged fragmentary sectional view of an air control fitting for use with gaseous fuel.

Referring now to the drawings in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of invention, the numeral 5 designates the handle of the tool having a fuel supply tube 5 extending longitudinally source of fuel supply. The front end oftube 6 projects into a shell 8 which is open at its bottom and formed with a rounded top 9 and spaced parallel side walls [0. The front end of fuelsupply tube 6 is connected to a substantially trough-like reservoir H positioned transversely in shell 3 and secured to the underside of top 9 of the shell by nuts I2 each having a shoulder or flange l3 at its upper portion resting on top 9 0f the shell and each having a threaded lower end threaded into the top I 6 of the reservoir.

Discharge orifices l5 are formed in the bottom of reservoir ll adjacent each-end thereof and therethrough and connected at its rear endto a supply hose or pipe 1 leading to a suitable constructed to provide valve seats is in which the lower ends of needle valves ll are engaged, the valves being threaded in nuts 12 and project upwardly therefrom and provided with knurled knobs l8 at the upper ends of the valves to regulate the orifices by a turning movement of the valves.

A pair of dome-shaped vaporizing chambers 19 are supported beneath the reservoir H by a web 2% extending downwardly from the bottom of the reservoir to rigidly support the vaporizing chambers immediately beneath the orifices I5, the top of the vaporizing chambers having openings 2| in alignment with the orifices l5 and spaced below the latter and into which fuel discharged from the orifices is received for entering the vaporizin chambers [9. The sides of the vaporizing chambers are also formed with draft openings 22.

The lower edge of vaporizing chambers l9 proiect slightly below the lower edge of shell 8 and a forwardly curved scraper 23 is formed at the rear lower edge of shell 8 and projects downwardly therefrom. The rear of scraper 23 is formed with a waste discharge opening 24.

The top 9 of shell 8 is also provided with a hand gripping knob 25 secured to the shell by means of a bolt and nut 26 and hollow flutes 21 are pressed outwardly at the rear portion of top 8 and provided at their lower ends with vent openings 28.

In the operation of the tool, liquid fuel is supplied under pressure to tube 6 and delivered to reservoir I i. When starting the burner, the shell 8 is inverted and a small quantity of fuel placed in shell 8 and ignited to heat Vaporizers is, after which the shell is turned into its normal working position with its open bottom lowermost and valves 41 opened to feed a desired amount of fuel through opening 2i in the top of the Vaporizers to vaporize and burn the fuel in the chambers I9. The tapering lower ends of the Vaporizers cause a downward projection of the products of combustion onto the painted surface to soften the paint which may then be easily removed by scraper 23 as the tool is moved forwardly.

In Figure 6 I have shown a modified fitting 29 connecting supply hose 30 with tube 6 in handle 5 when gaseous fuel is used, the fitting having air inlet openings 3| controlled by a rotatable sleeve 32 also having openings 33 for registering with openings 3! to provide a combustible mixture of air and gas supplied to the Vaporizers.

When gaseous fuel is used, orifices IS in reservoir ll should be sufliciently large, or valves I1 opened sufiiciently, to equalize the output with the input to the reservoir to prevent building up of back pressure in the reservoir which would have a tendency to escape through air inlets 3| and 33 and interfere with admission of air to the burner.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

Having described the invention, what I claim as new is:

l. A paint removing tool comprising a shell having a rear wall, an open bottom, and sides, a handle projecting rearwardly from the rear wall of the shell, an elongated fuel reservoir in the top of the shell attached to said top and extending transversely of said shell between said sides, a fuel supply tube extending into said shell and connected to said reservoir intermediate the ends of said reservoir, a pair of bottom fuel discharge ports in said reservoir adjacent the ends thereof, valve members extending through the top of said shell and reservoir into the latter and operative to open and close said ports, and a pair of vaporizing chambers in the shell below said ports and provided with open bottoms and openings in the tops thereof vertically aligned with said ports to receive fuel from said ports.

2. A paint removing tool according to claim 1 wherein said chambers are rigidly connected to said reservoir in spaced relation to said ports.

3. A paint removing tool according to claim 1 wherein said rear wall is provided with a scraping edge.

RAY A. MANGIERI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 606,907 Aiken July 5, 1898 896,454 Marsden Aug. 18, 1908 1,617,399 Kress Feb. 15, 1927 2,220,738 Stoddard Nov. 5, 1940

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