US 1151258 A
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Description (OCR text may contain errors)
Patented Aug. 24, 1915.
2 SHEETS-SHEET i.
A. W. FISCHER.
OIL BURNER. APPLICATION FILED 1ANI2.19II.
-LIIS NM SHEET z.
ADALBERT W. FISCHER, 0F PHILADELPHIA, PENNSYLVANIA, ASSIG-NOR TO `SCJHU'JYJTIEI ANI) KOERTING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.
Specification of Letters Patent.-
lPatent-ed Ang. 24, 19115.
AppIicaton filed January 12, 1911. Serial No. 602,160.
T0 all 'whom it may concern Be it known that I, ADALBERT W. FISCHER, a subject of the Emperor of Germany, residing in the city and county of Philadelphia, in the State of Pennsylvania, have in- .vented a certain new and useful Improveoil or like fuel is caused to flow by its own hydrostatic pressure through a nozzle orice of such character that the oil or like fuel in the issuing stream is in a sprayed or atomized condition.
The invention consists in certain features of construction and arrangement whereby the nozzle is given the characteristic properties above noted.
More specifically, the main feature vof the invention consists in a spray nozzle of novel type and adapted to cause the oil or like fiuid admitted,'and under pressure, within the nozzle, to issue therefrom in the form I of a flat fanlike atomized stream or jet.
The various features of novelty which characterize my invention are pointed out with particularity in the claims annexed to and forming a part of this specification.
For a better understanding of the invention, however, and the advantages possessed by it, reference should be had to the ac companying drawingsl and descriptive matter, in which I have illustrated and described forms in which the invention may be embodied.
Of the drawing, Figurevl is an elevation partly in section of a complete oil burner embodying my invention. Fig. 2 is an inverted plan, also partly in section, of a portion of the apparatus shown in Fig. 1. Fig. 3 is an elevation of the nozzle end of the burner shown in Fig. 1. Fig. 4 is a perspective view of the nozzle orifice member. Fig.
5 is a section on the line 5-5 of Fig. 6. Fig. 6is a section on the line 6-6 of Fig. 5, and Fig. 7 is a partial elevation illustrating a modified construction. Fig. 8 is a plan view of a nozzle orifice member diifering from that shown in Figs. 1 to 7 by the addition of a flow determining adjunct; and Fig. l9 is a section on the line 9-9 of Fig. 8.
In the drawings, and referring first to the preferred construction shown in Figs. 1 to 6, A represents the nozzle support or base of theburner and B represents the tubular member forming the body of the nozzle proper. As shown, the parts A and B are internally threaded at their adjacent ends to receive the ends of a connecting nipple C. The nozzle body B is formed with a cup shaped flange B which surrounds the adjacent end of the nozzle support A, and set screws D, passing through the flange B serve as a means for clamping the members A and B together, in any desired angular adjustment of the nozzle body B about its own axis with respect to the support A. At its discharge end, the nozzle body B is formed with a recess or seat B2 receiving the disk like orifice member G, and is notched at B3 to receive the positioning lugs G extending radially from opposite sides of the member G. The member G is secured in place by a cap member F threaded on to the end of the nozzle body B. The cap member F is formed with an enlarged central orifice F', and is cut away at F2 so as to clear the spray stream or jet issuing from the orifice member G. This orifice is formed in part by a slot G3 which lextends into the orifice member G from its formed by a milling cutter or the like, and
it is of course immaterial which side of the member G is in, and which side is out, and the lugs G and the notches B3 may in consequence be rectangular in cross section, as shown in Figs. 1 to 6, inclusive. When it is desirable to insure that the member G shall always be assembled with a particular one of its two sides out, I may make the positioning lugs G11 on the 'orifice member wedge shaped in cross section, as shown in Figs. 7 to 9, inclusive, and correspondingly shape'the notches B31 in the margin of the recess B2 as illustrated in Fig. 7. With the burner construction described it will be apparent that the means employed for connecting the nozzle body B to the face insures tight joints, and permits of a quick and easy adjustment of the nozzle body to bring the plane of the fluid stream or jet into the described position.
With the nozzle described, I havefound that oil or the like under pressure in the nozzle body will issue in a 'iuid fan-like stream and in a very thoroughly atomized or spray-like condition. rlhe shape of the issuing spray-like stream or jet is affected by the shape of the open slot forming the outer portion of the discharge orifice and by the shape and disposition of the intersecting channels forming the inner portion of the orifice. In particular, a decrease in the length of the radius of curvature of the bottom of the slot forming the outer portion of the orice acts within limits to decrease the angular width of the fan-like stream, and a similar efect is produced by a corresponding change in the shape of the slot in the inner face of the orifice member. The channels formed by the opposite ends of the slot in the inner faee of the orifice member tend to set up a flow of oil on the supply side of the orifice portion G4 in the direction of their lengths and this in conjunction with the slot-like opening forming the portion of the orifice on the outlet side of the portion G4 contributes to the desired fan-like spray discharge. This tendency to divide the fluid flowing on the supply side o f the Vorifice member into separate streams may be enhanced by the use of a bridge or deector member, such as the member H of Figs. 8 and 9, arranged on the supply side of the ,orice member GA and bridging the corresponding slot and lying directly back of the orifice portion G4. As shown in Figs. 8 and 9 the orifice member GA is recessed to receive the member H and the latter is detachably secured in place as by screws I-Io While in accordance with the provisions of the statutes I have illustrated and described the best forms of my invention now known to me, it will be apparent to those skilled in the art that certain changes in the form of the apparatus disclosed may be used without departing from the spirit of my invention, and, in particular, that certain features of the invention may be used with advantage without a corresponding use of other features.
Having now described my invention, what I claim as new and desire to secure by Letters Patent is- 1. A spray nozzle orifice member, having narrow transverse slots with curved bottoms, extending into it from opposite sides and intersecting to form a jet orifice.
2. An oil burner having a chamber for oil under pressure, with transverse slots having curved bottoms extending into the wall of said chamber from its inner and outer sides and intersecting to form a jet orifice.
3. An oil burner ,comprising a base member formed with a supply passage for oil under pressure, a tubular nozzle body connected to said base member, and into which said passage opens, provisions whereby said nozzle body may be secured to said base member in different angular positions, said nozzle body being formed at `its orifice end with a recessed seat, a plate like oriice member mounted in said seat and means for holding said member in place, said orice member being formed with transverse slots having curved bottoms extending into it from its opposite sides and intersecting to form a jet orifice, and said nozzle body and orifice member having coperative provisions for preventing rotation of the orifice member relative to the nozzle body.
4. An oil burner comprising an orice member having transverse slots with curved bottoms formed in its opposite sides and intersecting to form a jet orifice, a nozzle body formed with a recess to receive said disk and externally threaded at its nozzle end, and a cap member internally threaded to receive the threaded end of the nozzle body for holding the orifice member in place, said orifice member and nozzle body having cooperative surfaces for preventing rotation of the orifice member relative to the nozzle body.
5. An oil burner comprising an orice member having transverse slots with curved bottoms formed in its opposite sides and intersecting to form a jet orifice, a nozzle body formed with a recess-to receive said disk,
and externally threaded at its nozzle end, nozzle body, and to insure the orifice member and a cap member internally threaded to rebeing put in said recess with a particular ceive the threaded end of the nozzle body one of its tWo sides outermost.
for holding the orifice member in place, said ADALBERT W. FISCHER. orice member and nozzle body having co- Witnesses: operative surfaces adapted to prevent rota- ARNOLD KA'rz,
tion of the orifice member relative to the O. STEWART.