US1187008A - Device for applying powder compounds. - Google Patents

Description

P. A. NEHRING. DEVICE FOR APPLYING POWDER COMPOUNDS- I APPLICATION FILED MAYH. 1915. f I

1,187,008; Patented June 13, 1916.

fail Z THE COLUMBIA PuNoGRAPH C0., WASHINGTON, D. C.

I memos.

PAUL A. NEHRING, OF SYCAMOJEtE, ILLINOIS.

IDEVICEFOB APPLYING POWDER COMPOUNDS.

Specification of Letters Patent.

Patented. June 13, 1916.

To all whom it may concern:

Be it known that 1, PAUL A. NEHRING, a citizen of the United States, and a resident of Sycamore, county of Dekalb, and State of Illinois, have invented certain new and useful Improvements in ing Powder Compounds, lowing is declared to be a exact description. 7 v

This invention relates to devices for applying powder compounds to layers of tubular braided coverings for insulated wire, and its object is to provide a simple and emcient device capable of thoroughly applying the powder to a layer of the braided covering just prior to the time that another tubular layer is braided thereupon. The compounds used are well-known to those skilled in this art, and are employed for the purpose of providing insulation for the wire, as it is a very difficult matter to use liquid compounds whichwill give the best results. By applying the insulating powder compound directly to each layer after it has been braided upon the wire, and before the next layer is wound thereon, the compound is introduced not only into the crevices between the strands of the braid, but into the very pores of the strands themselves.

The invention consists in the several novel features of construction and arrangement hereinafter fullyset forth and claimed.

The invention is clearly illustrated in the drawing furnished herewith, in which:

Figure 1 is a central, longitudinal section through a simple form of device embodying the present invention; and Fig. 2 is a horizontal section taken on the line 2-2 of Fig. 1.

Referringto said drawing, 10 designates a receptacle for containing the powder compound, which receptacle may be supported upon a frame or plate, 11, associated with a braiding machine (not shown) of any of the common, well-known types for applying tubular braided coverings to wire. The braiding machine forms no part of this invention, and for that reason is not described in this specification, but its function is to apply several tubular coverings of braided fabric around the wire, and the present device is so arranged with respect to the braiding mechanism that the tubular braid is applied to the wire as it leaves the receptacle,

10, in traveling in an upward direction.

of whichthe folfull, clear, and

Devices for Apply-- Preferably, the receptacle, 10, has an upwardly flaring, open end, 12, at the top, and at its lower end is formed with a horizontal flanged bottom, 13, which may be bolted or otherwise secured to the supporting frame or plate, 11, by bolts and'nuts, 14. Projecting down from said flanged bottom, 13, is a sleeve-like member, 15, in which is rotatively mounted a hollow shaft, 16, said shaft projecting out through the lower open end of the sleeve-like member, 15, and having a pulley, 17 secured upon said projecting end, adapted to be belted to any suitable source of power. The hollow shaft, 16, has a flange, 18,- upon its upper end which rests upon an upstanding boss, 19, formed on the flanged bottom, 13, and upward movement of said hollow shaft is prevented by a nut, 20, threaded upon a reduced portion, 21, of the hollow shaft, and bearing against a shoulder, 22, formed thereon and against the lower end of the sleeve-like portion, 15. The screw threaded portion, 21, projects down below the hub of the pulley, 17 and upon said projecting end of the reduced portion, 21, is screwed a cap, 28, having a central orifice, 24, upon its lower end wall. An elastic washer, 25, is interposed between the lower end wallof the said cap and the lower end of the screw threaded portion, 21, of the hollow shaft, 16, and said elastic washer has a central orifice of the same, or substantially the same, diameter as the wire which passes through.

Secured to the flanged portion, 18, of the hollow shaft, 16, are stirrers, 27 which are preferably formed upon adisk-like plate, 28, screwed or otherwise secured to the flanged portion, 18, of the shaft, 16. Said disk-like plate has a central opening, 29, and the stirrers are bent upward from its marginal edge and converged toward each other, a space, however, being left between them for the free passage of the wire. Preferably, said stirrers comprise flat strips of metal and are twisted slightly so as to act as paddles or stirring'fingers in the receptacle, 10.

In operation, the wire, 30, with a layer of braided fabric thereon, is drawn upwardly through the center of the device (which is filled or partially filled with the suitable powder compound), and the pulley, 17, is revolved, thereby effecting the rotation of the stirrers, 27 which constantly agitate and stir the powder compound thereby causing it to continuously hug the layer of braided fabric around the wire,

pregnate each layer thus insuringthe penetration of the powder compound into the crevices between the strands, and also into the pores thereof, and insuring a thorough impregnation of the braid. As the wire leaves the receptacle at its upper end, a second layer of tubular braid is braided upon the first layer, thereby confining'the powder compound between the two layers. If more than twolayers of braided fabric are to be applied, a second powder applying device may be used above the first one, in position to apply powder before the other tubular braid is applied to the previouslyapplied tubular layers of braid. In fact, as many of the powder applying devices may be used as is necessary to imwith the powder compound.

I am aware that various alterations and modifications of this device are possible without departing from the spirit of this invention, and I desire, therefore, not to limit myself to the construction shown and described, but intend in the following claims to point out all of the invention disclosed herein. I

I claim as new and desire to secure by Letters Patent: 7 I

1. The combination with a powder receivin rece tacle havin an orifice for the passage through said receptacle of the article to which powder is to be applied, and a stirrer within said receptacle movable around said article for agitatingthe powder contained in the receptacle.

2. The combination with a powder receiving receptacle having an orifice for the passage through said receptacle of the ar- Copies of this patent may be obtained for ticle to which powder is to be applied, ro-

tatively mounted stirrers within said re-.

3. The combination with an upright, tu-

bular powder receiving receptacle having a centrally. located, do wnwardly projecting, sleeve-like member, a hollow shaft journaled in said sleeve-like member and through which an article may pass into and through said receptacle, and stirrers mounted upon said shaft for agitating the powder contained in the receptacle.

4. The combination of an upright, tubular, powder receiving receptacle, having a downwardly projecting, centrally located, sleeve-like member, a hollow shaft journaled in said sleeve-like member, a pulley on said shaft, and a stirrer mounted upon said shaft within the powder receiving receptacle and having converging stirring fingers arranged to rotate bodily about the article to be impregnated with the powder.

5. The combination of an upright, pow der receiving receptacle having a bottom formed with an upstanding boss and a downwardly projecting sleeve-like member, a hollow shaft within said sleeve-like member and having a flange resting upon said upstanding boss, said hollow shaft projecting below said sleeve-like member and having a pulley secured thereon, a closure for the lower end of said shaft formed with a centrally located aperture through which an article to be impregnated with powder, is moved, and a stirrer carried by said flange of the hollow shaft and having stirring fingers arranged to rotate bodily around the article to be impregnated with powder.

- PAUL A. NEHRING.

Commissioner of Patents,

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