US649672A - Injector for portable forges. - Google Patents

Description

No. 649,672. I Patented May l5, I900. H. E. PARSON.

INJECTOR FOB PORTABLE FORGES.

(Application filed Nov. 8, 1898. Renewed Sept. 26, 1899.)

(No Model.)

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UNTTiEn STATES PATENT ()FFICE.

HENRY E. PARSON, OF NElV YORK, N. Y.

lNJECTOR FOR PORTABLE FORGES.

SPECIFICATION forming part of Letters Patent No. 649,672, dated May 15, 1900. Application filed November 3, 1898. Renewed September 26, 1899. Serial No. 731,768. (No model.)

To (tZZ whom it may concern:

Beit known that I, HENRY E. PARSON, a citi zen of the United States, residing in the city of New York, borough of Brooklyn, and State of New York, have invented certain new and useful Improvements in Injectors for Portable Forges, of which the following is a specification.

This invention relates to injectors for portable forges; and the object of the same is to provide the injector with suitable means of lubrication, so that the parts of the same can be easily turned one upon the other.

The invention consists of an injector which comprises a nozzle provided with an internally-screw-threaded boss, having a flange between the boss and the passage through the nozzle, an air tubeinserted through the openin g in said flange and being externally screwthreaded, an internally and exteriorly screwthreaded gland-nut for engaging the screwthreads of the air-tube and said boss, and a packing of plumbago saturated with oil and held between said flange and said gland-nut, as will be hereinafter particularly described and then claimed.

In the accompanying drawings, Figure 1 is a side elevation of a portable forge to which my injector is applicable. Fig. 2 is an enlarged vertical transverse section of the coalbox of the forge and of the injector. Fig. 3 is a still further enlarged vertical section of the injector, and Fig. 4 is a rear elevation of the same.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A indicates the frame, and B the c0al-box, of a portable forge to which my injector is adapted to be applied. The coal-box has a dependingfcenter neck 0, provided with a radially-extending blast-tube D.

E is a diaphragm in the bottom of the coalbox, which is received in a recess 6 at the upper end of the neck 0. The lowerend of the neck 0 is closed in any suitable manner, as by screw-cap 0', Fig. 1, or by plate 0 Fig. 2. The plate O is fastened by means of screwboltfand nutj".

The injector G is inserted in the flaring outer end of the blast-tube D. The injector consists of a nozzle g, the inwardly-extend ing end of which tapers, while the outer end is formed with an internally screw-threaded boss 9', the nozzle also having a downwardlyeXtending internally-screw-threaded neck 9 which receives the screw-threaded upper end of a valved pipe H, preferably connected with a supply of air under pressure. An internal flange g is arranged in the nozzle, so that the air forced through the nozzle from the pipe H is caused to pass through the vertical passage g and the horizontal passage 9'' in said nozzle.

The tapering end of an air-tube I extends through the opening in the flange g and projects into the tapering internal end of the passage g so that an annular passage 1 is formed between the said parts, through which the air from pipe H passes. This space can be made larger or smaller, accordin to requirements, by means of a gland-nutiwhicli is both internally and exteriorly screwthreaded, so as to engage with the interior screw-thread of the boss g and with the exterior screw thread adjacent to the flaring mouthpiecet'of said air-tube. The gland-nut J is provided with diametrically opposite han dles j, so that the same can be grasped by the hand for turning said nut and adjusting the air-tube accordingly. In such screw-connected parts it is often very difficult to turn the one upon the other; but in the present invention a lubricating means for the screwthreads is provided, which means is confined in the injector itself. This consists, prefer ably, of a body of plumbago 7t, saturated with a suitable lubricating-oil and made in the form of a packing-ring,which is placed around the air -tube Iand confined between the flange and the inner end of the gland-nut. By turning the gland-nut in and squeezing the plumbago packing 7a a small amount of oil is forced out of the same and'into the joints adjacent thereto. The neck 9 of the injector extends downwardly and is secured onto the upper end of pipe H, which projects upwardly through a suitable opening in the outer end of the blast-tube D, and the nozzle g projects inwardly in said blast-tube, so that it is axially in line with the passage there through In operation air from a suitable supply is caused to pass through the pipe II and in passing through the annular space g and the passage 9 in the nozzle to cause an additional supply of air to be sucked in through the airtnbe I. The jet of air forced through the nozzle then also sucks in an additional supply through the mouth of the blast-tube D, so that the augmented blast is forced into the neck 0 upwardly through the perforated diaphragm E and into the coal-box B, so as to cause the coals therein to burn more freely, as Well as to hasten the heating of the metal in the forge.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- In an injector, the combination of the noz- 210 of the same provided with an internally- HENRY E. PARSON.

\Vitnesses:

PAUL GOEPEL, GEO. L. WHEELOOK.

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