US400683A - Walter marsh jackson - Google Patents

Description

w. M, JACKSON METHOD OF FORMING GAS OUTLETS.

(No Model.)

Patentgd Apr. 2,1889.

x mm i'hoto-Uibognpw, WM

8 UNIT STATES PATENT OFFICE.

WALTER MARSH-JACKSON, on NEW YORK, N. Y.

METHOD OF FORMING GAS-OUTLETS.

SPECIFICATION forming part of Letters Patent No. 400,683, dated April 2, 1889.

Application filed November 6, 1888. Serial No. 290,103. (No model.)

To all whom it may concern:

Be it known that I, WALTER MARsH JACK- SON, of New York, in the county of New York.

and State of New York, have invented certain new and useful Improvements in the Method of Forming Gas-Outlets; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in the method of forming gas-outlets.

In Patent No. 381,380, granted-to me April 17, 1888, I claim a process consisting in first forming a series of openings through the fiat or externally-convex surface of the top of a closed. pillar or tip and subsequently changin g the directions or axis of said openings bydepressing or countersinking the top. By such process, in order to give a material change to the axis of the openings, the top of the pillar must be quite thick and of a single piece of metal, or the countersink quite deep. In the present process the top can be thickened by separate blocks, and the depth of the cavity in the top is immaterial, as the holes are formed after the end of the tip has been shaped.

In the accompanying drawings, Figure 1 is a vertical section through a tip having the separate conical disk. Fig. 2 shows plan views of the same with two, three, and four perforations. Fig. 3 is a vertical section of a second form. Fig. 4 shows plan views of the same.

Figs. 5 and 6 show vertical section and plan views of a third form. Figs. 7 and 8 show similar views of a fourth form. Figs. 9 and 10 are similar views of a fifth approved form'; and Figs. 11, 12, 13, 14, and show the heads applied to gas-pillars.

A very large class of gas-consumers prefer to use what is known as the Scotch tip or jetoutlet, which consists, broadly, of two converging perforations meeting in the top of a tip or pillar. It is therefore desirable that such outlets should be made properly to insure the greatest amount of light with the least consumption of gas and with freedom from smoke when passing gases of high candle-powder. In order to obtain such results, it is necessary to so construct the apertures or gas-outlets that the gas cannot rise through them in a vertical line, but so that instead it shall take the direction of the apertures, and thus be directed into each others current or discharge at the extreme apex of the apertures. Now a tiphead or a gas-burner pillar-head is necessarily too thin when formed from sheet metal by drawing or other means to afford stock enough to obtain the kind of perforation or aperture desired. It therefore becomes necessary to change the form of the inner surface of the head of the tip or pillar to secure the desired result. This change may be made in two ways, both of which accomplish the same result-one by inserting a separate piece of stock or a disk in the tip or pillar and driving the same snugly into position against the under surface of the head, and the other by forcing the metal, after drawing or at the time of drawing, into a head the inner surface of which is convex, accomplished by forcing the metal by dies or other suitable means and then drilling the holes or apertures. In other words, in one case the result is accomplished by the use of two distinct pieces-the head and the disk-and in the other by a single integral piece properly shaped. The former construction is illustrated in Figs. 1 and 11. In these the head A is flat, and being drawn from sheetmetal is too thin to accomplish the result sought, and so a disk, B, preferably pointed, is inserted in the tip or pillar and driven snugly against the under surface of the head. In the case of tips the shank may be shrunk in after the disk is inserted, and thus the desired taper may be given to the shank to fit a pillar when screw-threads are not used. Now the perforations a, two, three, or four, whatever the number may be, are oblique, converging at the apex or the head into a single aperture. In all the other constructions the tip or pillar is made in one integral piece.

In Figs. 3 and 12 the inner surface is made convex by forcing by means of dies or similar instruments. The perforations are then drilled in, as before. The head shown in Figs. 5 and 13 is also formed by forcing. In Figs. 7 and 14 a circular countersink, b, is made in the center of the head and provided with two or more perforations, a, while in Figs. 9 and 15 this countersink is preferably oval or elliptical, with two holes a, therein. By forming the heads with several perforations a duplex, triplex, or other form of flame results, according to the number of the perforations. The general form of the tips and pillars is the same as those in ordinary use, With the exception of the form of the head, and this constitutes the feature of improvement.

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is

' 1. The herein-described method of forming gas-outlets, consisting in forcing the head of a closed sheet-metal pillar or tip into shape and at the same time or subsequently giving the under or inner surface of the head a convex shape, and then making apertures through the latter in such directions that none of the escaping gas shall pass vertically While in the apertures, substantially as set forth.

specification in the presence of two subscribo ing Witnesses.

ALTER MARSH JACKSON.

\Vitnesses:

GEORGE T. GADEN, GEORGE M. WARD.

Images