US34318A - Improvement in rotary blowers - Google Patents

Description

A S MITH ROTARY BLOWER Patented Feb. 4. 1862.

UNITED STATES PATENT OFFICE.

ADDISON SMITH, OF NEW YORK, N. Y.

IMPROVEMENT IN ROTARY B LOWERS.

Specification forming part of Letters Patent No. 34,318, dated February 4, 1862.

To all whom it may concern.-

Be it known that I, ADDISON SMITH, of the city, county, and State of New York, have invented a new and Improved Rotary Blower; and I d1 hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, making apart. of this specification, in which Figure 1 is a transverse vertical section of my invention, taken in the line 00 m, Fig. 2; Fig. 2, a longitudinal vertical section of the same, taken in the line y 11 Fig. 1.

Similar letters of reference indicate corresponding parts in the two figures.

This invention consists in placing a cylinder having radial sliding pistons eccentrically within a cylindrical case, which is provided with an induction and eduction opening, the several parts being arranged as hereinafter fully shown and described, whereby the moving or running parts may be operated at a very high rate of speed without being subjected to a great amount of Wear and tear, and the air which enters the device during its operation forced out from it by the action of the pistons in connection with the case, the blast being produced on the same principle as that produced by an ordinary bellows, and not like ordinary rotary fans or blowers produced by a vacuum formed by a rapid revolution of a fan within a case.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents a cylindrical case, which may be constructed with wooden heads act and a sheet-metal body I). This case maybe of any desirable dimensions, and it is placed on suitable pedestals or supports 0 0. At one side of the case A, near its lower part, there is an induction-opening (Z, and an eduction eis at the opposite side of the case. (See Fig. 1.)

Within the cylindrical case A there is placed a cylinder 13, which is provided with a number of radial sliding pistons C. These pistons may be formed of metal plates, which extend the whole length of cylinder 13, the outer edges of the pistons G bearing against the inner surface of the bodyb of thecase A. The cylinder B is placed eccentrically within the case A, and it has a hollow shaft D, which is placed loosely on a permanent shaft E, the

latter being attached at one end to the head a, as shown clearly in Fig. 2. In the inner side of the head a there is fitted concentrically a rotary disk E, which has an annular groovef made in it near its edge. In this groo've f there are placed segments F, to which the pistons O at one end are attachedone to each. One of the segments F (designated by F is firmly secured to the disk E, but the others are fitted loosely in the groove f, and the disk E has its axisG extending through the header, and is provided at its outer part- With a driving-pulley H. The opposite ends of the pistons are attached to segments I, which are fitted loosely in an annular groove g in the inner side of the head a.

The operation of the machine is as follows: Power is applied to the pulley H, and the disk E consequently rotated. The cylinder B is rotated from the disk E in consequence of the segment F being permanently attached to the disk E, the direction of the movement of the disk and cylinder being indicated by the arrows upon them, as shown in Fig. 1.

The pistons 0 form compartments it within the case A, each of which fills with air while passing the induction-opening d, the pistons C having their edges kept in contact with the inner surface of b by. the segments F I and grooves f g." The air is carried around within the upper part of the case A and is compressed and forced out of each compartment into the eduction-openiug e, as said compartments are contracted as they approach the educt-ionopening owing to the eccentric position of the cylinder B. (See Fig. 1.) The operation therefore, it will be seen, is similar to that of abellows as it is forced out from the case A under pressure. The segments F in the disk E rotate with it; but the segments I necessarily travel entirely around the groove gin the head a. 'llence those machines which are designed to have their cylinder B rapidly rotated are provided with a disk E at each end, as much friction and wear and tear are thereby avoided, but in those machines which are designed for a slow movement the disk E may be dispensed with and an annular groove made in the inner side of the head a, in which the segments F move entirely around, like the segments I in the groove g. In either case the air will be received within and forced out from the case A in precisely the same way.

2 same has its pistons O operated or drawn in and out, so that their outer edges will be kept in contact with the inner surface of the body I) of the case A through the medium of the segments F I and grooves fg, eitheror both ofthe latter being stationary or rotating, substantially as described.

ADDISON SMITH.

\Vitnesses:

R. GAVVLEY, JAMES LAIRD.

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