US2483742A

US2483742A - Torch tip

Info

Publication number: US2483742A
Application number: US634686A
Authority: US
Inventors: Jr Oliver Thurman
Original assignee: Air Reduction Co Inc
Current assignee: Airco Inc
Priority date: 1945-12-13
Filing date: 1945-12-13
Publication date: 1949-10-04
Anticipated expiration: 1966-10-04

Description

.EFE EE EEES i fw o, THURMAN, JR

TORCH TIP Filed Dec. 1s, 1945 f5 W' P7 "fi ff r1 @et 4, i949..

Patented Oct. 4, 1949 V'rohen 'rIrl Oliver Thurman, Jr., Mountain Lakes, N. J., assignor to Air Reduction Company, Incorpo- V rated, a corporation of New York Application December 13, 1945, Serial No. 634,686

8 Claims. 1

This invention relates to torch tips of the block type, i. e. the type that have a number of jet passages for the gases formed directly in a block of metal, as distinguished from the nozzle type of torch tip.

The jet passages of block-type tips are usually formed by drilling into the block from that face of the block which is to constitute the discharge face. The jet passages arevusually in one or more rows extending longitudinally of the block and the jet passages of each row all communicate with a longitudinal -bore within the block which constitutes a distributing chamber for delivering gas simultaneously to all of the jet passages of a row. Sometimes each jet passage has a metering port through which the gas ows in passing from the distributing chamber into the jet passage. The drilling must ybe done very carefully, especially that which is required to form the jet passages .andmetering ports, and is therefore time consuming and increases the cost of'making the tips. A

Among the objects ofthe invention are to provide an .improved block-type torch tip that is relatively inexpensive `to manufacture and whose parts are so constructed and assembled that no drilling is required Ato form thejet passagesv and metering ports or the gas distributing generally V-shaped cross-section; a pair of identical bottom members positioned against the ridged face of the body portion at oppositeY sides of the ridge and which are so shaped as to form with the body portion a pair of gas distributing chambers at opposite sides of the ridge and to form with the opposite converging faces oi the ridge a pair of converging slot-type jet passages forthe oxygen and fuel gas; and a pair of identical end plates which close the opposite ends of the distributing chambers and the jet passages.

Atorch tip embodying lthe inventionis illustrated in thel accompanying drawing, in which 2 Figure 1 is a transverse vertical section through the tip;

Fig. 2 is a bottom plan view of the discharge' face of the tip, portions of the two bottom members-being broken away to expose the'ridged bottom face ofthe body portion;

Fig. 3 is a horizontal section taken on the line 3-3 of Fig. 1; and

Fig. 4 shows in transverse vertical section a modified type of ridge that may be used on the body portion.

The mainbody portion of the tip comprises an elongatedmetal block I having on its bottom face a centrally located ridge 2. As best shown in Fig. 2 the ridge extends longitudinally of the block, and as best shown in Fig. 1 has

side faces

3 and 4 which converge from the base of the ridge towards its crest 5 so that the ridge is V- shaped in cross-section. The body portion I has at face portions 3 and 'l at opposite sides of the ridge.

A pair of identical 4bottom members 8v and 9, each of which may be generally L-shaped in cross-sectionas shown in Fig. 1 and has a length corresponding to the length of the body portion I as shown in Fig. 2, are positioned against the body portion at opposite sides of the ridge 2. These members fit against the vflat faces 6 and 'l of the body portion and their longitudinal notches IIJ and II form with the body portion a pair of longitudinally extending gas distributing chambers I2 and I3 (Fig. 1). The

members

8 and 9 have inclined faces I4 and I5 which cooperate with the sloping faces 3 and Ll on the central ridge to form a pair of convergingvslot-type jet Vpassages I6 Aand Il. The two faces that cooperate to form each jet passage maybe substantially paral1eldivergent, or convergent, depending upon the desired velocity of the issuing jets. `The preferred relation is the convergen relation shown in the drawing.

At the upper edge of the inclined face I4 of the bottom member 8 there is a` milled serrated lip I8 which projects towards the ridge2. The

tcethofthe lip contact with the sloping-face 3` chambers and the jet passages, and means for supplying different gases separately to the distributing chambers for mixing by the converging jet passages.

6. A torch tip of the block type comprising an elongated block constituting a body portion, the bottom face of the body portion having a central longitudinally extending ridge with converging side faces, a pair of bottom members secured to the body portion at opposite sides of said ridge and forming with the body portion a pair of longitudinally extending gas distributing chambers at opposite sides of the ridge, said bottom members having inclined faces cooperating with the sloping faces of the ridge to form a pair of slot-type jet passages, means for closing the opposite ends of the distributing chambers and the jet passages, and means for supplying gas to the distributing chambers for delivery by them to the jet passages.

7. A torch tip of the block type having two members provided with opposing faces forming a slot-type jet passage, distributing chamber means in communication with said jet passage, a serrated lip at the upper edge oi one of said faces, the teeth of the serrated lip contacting with the other face so that the spaces between the teeth constitute metering ports at the entrance to the gas to said distributing chamber means for delivery to the slot passages through said metering ports.

8. A torch tip of the block type having three members, two of said members each having a face disposed opposite a face on the third member to form two slot-type jet passages, a serrated lip at the upper edge of each of the faces of said two members, the teeth 0f the serrated lips contacting with the opposing faces on said third member so that the spaces between the teeth constitute metering ports at the entrance to each of the slot-type jet passages, and means for supplying different gases for delivery to the slot-type passages through said metering ports, said slot-type jet passages being disposed to mix said gases at substantially the exit of such passages.

OLIVER TI-IURMAN, JR.

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

UNITED STATES PATENTS Number Name Date 910,178 Cosmovici Jan. 19, 1909 1,211,792 Von Boden Jan. 9, 1917 1,514,815 Anderson Nov. 11, 1924