US518398A - Rich koch - Google Patents

Description

(No Model.)

H. P. A. FAULHABER & G. F. KOCH. CHIMNEY GOWL N0. 518,398. Patented Apr. 17, 1894.

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UNITED Saw-was PATENT -OFFICE.

.HERMANN FRIEDRICH AUGUST FAULHABER AND CHRISTOPH FRIEDRICH KOCH, OF SCHWABISCH HALL, GERMANY.

CHIMNEY-COWL.

SPECIFICATION forming part of Letters Patent No. 518,398, dated April 17, 1894. Application filed May 4, 1892. Serial No. 481,852- (llo model.)

To aZZ whom it mag concern.-

Be it known that we, H ERMANN FRIEDRICH AUGUST FAULHABER and CHRISTOPH FRIED- RICH KOCH, subjects of the King of Wiirtemberg, German Empire, and residents of Schwathus rendering it very difficult for the rota-- tive part to turn. This drawback cannot be entirely avoided by providing the bottom bearing with protecting casings and the like.

The object of our invention is to provide a new and improved cowl in which the bottom bearing for the rotative part is completely avoided, and thus the stopping of said rotative part by rust and soot is also avoided.

The invention consists in the combination with a cowl casing, of a tube projecting upward from the same, aspindle passed through the casing and tube, a collar fastenedto the spindle and resting on the top of said tube, and a protecting casing separate from the collar and extending sufficiently far above and below the bearing parts as to afford a complete guard against the entrance of water and a substantial protection against dust the rotative part of the cowl being attached to the spindle.

The invention also consists in the construction and combination of parts and details which will be fully described hereinafter and finally pointed out in the claim.

In the accompanying drawings, Figure 1 is a vertical longitudinal sectional view of our improved chimney cowl. Fig. 2-is an enlarged detail view of the top part, showing a modification. Fig. 3 is a similar view, showing another modification. Fig. 4: is a sectional view, on the line 4 4, of Fig. 2, showing the ball bearing, and Fig. 5 is a similar View, on the line 5 5, of Fig. 3, showing the ball bearing.

Similar letters of reference indicate corre-' sponding parts.

- tance from the end of the tube.

and three of the balls are smaller.

Thespindle A is provided at its upper end with a collar B, which rests on a bearing ring L formed on the upper end of an upwardly projecting tube L fastened at its lower end to' the casing M of the cowl. The .rotative cylinder D of the cowl is fastened to the said spindle A and suspended by means of the same from the top of the tube L. Rust and soot cannot effect the support for the said spindle and the rotating cylinder, and thus the same can turn very freely. For the purpose of reducing the friction still more, the ring L can be provided with a groove for receiving balls m, surrounding the upper end of the spindle and forminga ball bearing, the

collarB being provided at its under side with a groove also fitting the balls, as is shown in Figs. 2 and 3. In this manner the spindle a is guided concentrically to the tube L, and at the same time is held a greater or less dis- As shown in-Figs. 2 and 3 three of the balls are larger The collar B is thus supported by the larger balls and the smaller balls merely serve for holding the larger balls at the proper distance from each other. In Fig. 2 the groove for the balls is so arranged that the pressure of the balls on the ring L is vertical. In Fig. 3 the grooves are so arranged that the pressure exerts itself outward and downward.

If the cowl is to be provided with a vane O, the same can be attachedin any suitable manner to the-top of the spindle or to the collar B, as shown in Fig. 2.

It will be seen that in both forms shown in Figs. 1 and 2 respectively, either the bearingring L and collar B are inclosed by a dustprotecting casing 0, Fig.1, rising from the tube L, or by acasing C, Fig. 2, depending from the vane O. The casings C or O are separate from the collar B and extendsufticiently far above and below the point of bearing as that the bearing surfaces are fully protected against dust and rain, and should the spindle A for some reason he accidentally raised within the tube L, the protecting casing will prevent the loss or displacement of the ballbearings, in case they are employed.

Having thus described our invention, we we claim as new and desire to secure by Letters Patent- In a chimney-cowl, the combination with a cowl-casing and an upwardly projecting tube 5 fixed thereto, at its lower end of a spindle passed through the tube and carrying the rotatlve partof the cowl,a collar fixed to the top of the spindle and adapted to turn upon the upper end of the tube, and a protecting xo casing separate from said collar and extending sufficiently far above and below the bearing parts as to protect the latter against dust and rain, substantially as herein shown and described.

In testimony that we claim the foregoing as IO our invention we have signed our names in presence of two subscribing Witnesses.

HERMANN FRIEDRICH AUGUST FAULIIABER. GHRISTOPH FRIEDRICH KOCH. Witnesses:

J OHANNES HAFELE, ERNST RiiDT.

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