US317435A

US317435A - ballantine

Info

Publication number: US317435A
Authority: US
Publication date: 1885-05-05
Anticipated expiration: 1902-05-05

Description

. (No Model.)

A. T. BALLANTINE. MEANS FOR PROTECTING SHAETS FROM HEAT.

Patented May 5, 1885.

end elevation of the same.

UNITED STATES PATENT ()FEICE.

ALEXANDER r. BALLANTINE, OF GENEVA, OHIO, vAssIeNoE TO ELLA B. BALLANTINE, OF SAME PLACE.

MEANS FOR PROTECTING SHAFTS FROM HEAT.

SPECIFICATION forming part of Letters Patent No. 317,435, dated May 5, 1885.

Application filed March 11, 1884. (No model.)

To aZZ whom it may concern.-

Be it known that I, ALEXANDER T. BAL- LANTINE, a citizen of the United States, residing at Geneva, in the county of Ashtabula and State of Ohio, have invented certain new and useful Improvements in Means for Protecting Shafts from Heat; 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, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention has for its object the protec tion of revolving shafting from the expandin g effect of heat, to which such shafting may be subjected by reason of its unavoidable proximity to heated localities and to that end it consists, substantially, in providing the exposed portion of the sh afting with a surroundin g chamber-preferably water or air tightthrough which a limited quantity of water at a low temperature is constantly passing, and While therein is thrown by suitable means in contact with the walls of such surrounding chamber to abstract and carry off their heat, thus keeping the shafting protected in this manner entirely cool and free from injurious expansion.

I will now proceed to definitely describe the manner in which I have applied my invention, it being clearly understood that it is susceptible of considerable variation in its adaptation to different shafting without departin g from the spirit of my invention.

In the drawings, Figure 1 is a side elevation, partly in section, of a shaft to which my improved construction is applied. Fig. 2 is an Fig. 3 is a transverse section through the shaft and its surrounding chamber. Fig. 4 is a top plan view of Fig. 1, with the upper section of the surrounding chamber removed, and Fig. 5 is a detail view.

Referring to the drawings, a is the shaft.

The chamber which surrounds it consists of two semi-cylindrical sections, 1) and 12, provided, respectively, with the longitudinal flanges b and W, by means of which the two 1 is admitted to the chamber.

sections are securely bolted around the shaft, a suitable watertight packing,.b having been placed between the flanges I) h The lower section, b, has the longitudinal flanges b b on either side of its bottom surface, by means of which the section b is secured to the foundation-timbers c.

d d is a tapering collar, made in two semicircular sections. Each section is provided with a lug, (1 by means of which and the screwbolts d the sections cl d are adjusted back and forth in the tapering socket e in the end bearings of the chamber. One of these sectional collars cl (1 is placed at each end of the bearings of the chamber 1) b, as just described. The two sections (Z d of this collar have the alternate deep and shallow grooves d and d cut in their tapering surfaces, into which are inserted strips of expansible material. Preferably pine wood and similar strips, as at d, are laid between the two sections d d when in position in their socket and around the shaft. The natural expansion of these strips by contact with the water from the chamber serves to preserve a close contact of the collar with the bearings and shaft, thus rendering the chamber practically water-tight at the bearings.

Within the sections 1) b, and between the tapering sockets e, is the cylindrical chamber f, through the center of which the shaft a passes. This chamber f is considerably larger in diameter than the shaft a, thus leaving an annular space within the chamber around the shaft.

9 is an inletpipe opening into the side of the chamber f, by means of which the cooling-fluid g is an outlet-orifice, through which the cooling-fluid escapes. This outlct-orificeis preferably located a short distance above the bottom of the chamber f.

An orifice and plug, g is provided at the bot tom of the chamber, to be used, when aliquid is employed as the cooling medium, in dis charging the chamber f of its contents when desired.

h h are paddles or agitators, one or more, which are secured in any convenient manner to the shaft (1, and revolve with it in the surrounding chamber f. These agitators are herein shown as secured to the shaft a by the bands It, which pass tightly around the shaft,

and are riveted to the paddles. They are made of sufficient size to nearly fill the space between the shaft and the wall of the chamber.

The operation of the parts just described is as follows The water or other cooling agent is admitted to the chamber through inlet-pipe g. It will be seen that by reason of the location of the outlet-orifice 9 only a small quantity of water iskept in thebottom of the chamber. This water, as it passes through the chamber, is constantly lifted and thrown in contact with the walls of the chamber by the paddles h h, thus abstracting the heat from such walls, and carrying it off through the outlet-pipe g. In this manner the shaft is protected from the heat which it would otherwise be exposed to, and thereby prevented from expanding.

It is obvious that in adapting my invention to other forms of shafts than that herein shown, and to shafts in other and varied positions, the details of construction would have to be correspondingly varied and modified; but these variations would all be confined within the limits of my invention so long as they comprised a surrounding chamber through which a limited quantity of water or other cooling agent, ata low temperature, is constantly passing, and while therein is thrown by suitable means in contact with the walls of such surrounding chamber to abstract and carry off their heat.

I claiml. As a means of protecting revolving shafting from heat, a surrounding chamber provided with inlet and outlet orifices and tight joints and bearings, through which chamber a limited quantity of water or other cooling agent is constantly passed, and an agitator or agitators attached to and revolving with the shaft and within the chamber, to throw the passing water or other cooling agent in contact with the Walls of the chamber, to abstract and carry off their heat, substantially as shown and described.

2. The combination, with the shaft to and its attached agitators or paddles h h, of the sectioned chamber 1) b, with tight joints, and the sectioned tapering collar cl d, adjustable in the socket e, to form a tight bearing for the shaft,

as and for the purposestated.

3. The combination, with the shaft (0 and its attached agitators or paddles h h, of the sectioned chamber I) b, with tightjoints, and the sectioned tapering collar (1 (1, provided with the inlaid strips d d of pine or other expansible material, as and for the purpose stated.

4. The tapering sectioned collar d d, provided with the adjusting-lugs d d for the reception of the adjusting-bolts d 66 and having its tapering surface provided with the longitudinal inlaid strips of pine or other expansible material, as and for the purpose stated.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALEXANDER T. BALLANTINE.

Witnesses:

J. FRED. BEEN, W. T. MILLER.