US451542A

US451542A - Dust-collector

Info

Publication number: US451542A
Authority: US
Publication date: 1891-05-05
Anticipated expiration: 1908-05-05

Description

(No Model.)

R. R. WATTERS.

DUST COLLECTOR.

Patented May 5,1891.

lian: a Jlldtera @litter-wey.

My/ff UNITED STATES PATENT OFFICE.'

RAMA R. VATTERS, OF AKRON, OHIO.

DUST-COLLECTO R.

SPECIFICATION forming part of Letters Patent No. 451,542, dated May 5, 1891. Application tiled lune 16, 1888. Serial No. 277,837. (No model.) y

To @ZZ whom it 'ntf/ycoll/(16771,:

it known that I, RAMA R. WA'rTnRs, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented a certain new and useful Dust-Collector, of which the following is a specification.

The object of my invention is to provide a simple and effective machine by which solid particles of matter held in suspension in or carried by air, from the most impalpable, as the uncombined particles of carbon in smoke and the dust in grain-reducing mills, to the larger, as kernels of grain, sawdust, and planing-mill chips, may be separated therefrom, collected, and retained.

It consists of the construction and arrangement of parts hereinafter fully described, and then specifically pointed out in the claims, due reference being had to the accompanying drawings, forming a part of this specification.

In the accompanying drawings, in which similar letters of lreference indicatelike parts, Figure 1 is a vertical central section of a machine embodying the essential features of my invention, and Fig. 2 an enlarged view of a portion of Fig. 1 to illustrate the manner in which the particles of matter are arrested and collected.

Referring to the drawings, A is a hollow cylindrical case mounted to stand vertically on suitable legs B B, and having in the upper and lower ends circular central openings a a', the lower opening preferably larger than the upper, each having about its edge an inwardly-projecting annular rim, which rims register, respectively, with openings in adjacent inner movable parts, hereinafter described, and provided with a dischargespout a2.

In the center of the case A is a vertical shaft O, which projects through the openings a c', and is journaled in suitable bearings c c', attached to the case A, and bears a pulley O', by which it can be turned.

Within the case A are two hollow shells D D similar in shape, the outline of each being substantially a frustum of a cone, with the larger end down and open, the upper end being closed with a disk or cover through which is a central circular opening of the same size as the opening a in the top of the case A. These shells D D are mounted on the shaft C, the former directly above the latter in the following manner: On the shaft O is a tight hub E, having radial arms e, to each of which is attached a vertical fan-blade F, the upper and lower edges of which, bent at a right angle, are riveted, respectively, to the disk at the top of the shellD, and a solid disk G, having a diameter slightly less than the inner diameter of the shellD at the same plane, leaving an annular space between its edge and the shell. Connected with the lower edge of the shell D, and a short distance beneath it, by any suitable device, as straps t', is an annular disk I, with its diameter slightly exceeding that of the bottom of the shell, and having its outer edge turned up saucershaped, so as to be in or slightly below thc horizontal plane of the lower edge of the shell D. This annular disk I is preferably in the same horizontal plane with the top of the shell D', and may be either a continuation of or a separate piece inclosing and attached to it. The shell D', having its top preferably in the same plane with the annular disk I, is supported by radial arms projecting from a tight hub E on the shaft C, and sustains at its lower edge an annular disk I, similar in constructionv with the disk I and situated in the same relative position tothe shell D as the disk I bears to the shell D. The opening in the disk I', preferably-larger than the opening in the disk I, is arranged to run close to and register with the rim proj ecting inward from the opening a in the lower end of the case A. Thus the shells D D and disks I I', with their connected parts, are firmly secured to the shaft O and revolve with it.

Attached to the bottom of the disk I are Scrapers 'consisting of blades J, with their inner and lower edges close to the rim about the opening ct and the bottom of the case A.

In operation the shaft O and connected parts are revolved at a high speed in either direction by means of the pulley O', which causes the fan-blades c to drive the surrounding air radially toward the inner face of the shell D. This creates a blast or current inward through the opening a, whereby the dust-laden air is brought into the machine and driven against the sloping walls of the shell D, upon which all solid particles of mat- IOO ter are retained by centrifugal force. This centrifugal action of the fan-blades upon the a1 r 1s assisted by the disk G, over the edges of which the air must pass in its descent, and by which it is deflected against the interior ot` the shell D. "hen iii-st started, the air for a time escapes between the lower edge of the shell D and the annular disk I; but as the solid particles gather on the shell D they are driven down by centrifugal force, the par ticles last deposited sliding and riding over those upon the shell D, and, falling into the saucer-shaped rim of the disk I, close the space between it and the lower edge of the shell D, as shown in Fig. 2, which compels the air to return toward the center and pass through the opening in the top of the shell D. In this lower shell D the operation is the saine as in the upper, except that no fan or dellector is used; but the solid particles remaining in the air are collected 011 its inner face by centrifugal force and slide down into the saucer-shaped rim of the disk I, while the air escapes through the opening a after the solid particles have closed the space between the lower edge of the shell D and the disk I. Then the spaces between the shells D D and disks I I are once closed, asufcient amount of solid particles always remains, retained by the peculiar shape of the disk edges to keep them closed; but as the mass accumulates by the sliding down of other particles the surplus is forced out by the combined effects of centrifugal force and the pressure of the accumulated mass behind and escapes over the edges of the disks I I into the case A, and, falling by gravitation to its floor, is swept out through the discharge-spout a2 by the Scrapers J. I do not, however, confine my invention to the exact construction, arrangement, proportions, or numberof parts herein shown, as the shell D and disk I may be omitted, being a duplication of the shell D and disk I to insure more complete action of the machine, in which event the case A is shallower and the scrapers I are attached to the disk I. 'lhe detlector G and scrapersJv may also be omitted, as the first simply assists in driving the air toward the inner face of the shell l) and the second sweep the accumulated particles toward the inner face ot the case A and into the discharge-spout a?, and generally the other perts may be slightly modified, as by changing the angle of the sides ot' the shells DD',orbyslightlycurving them. The degree of curvature ofthe disks I I', the size of the openings therein, and the manner in which they are attached may be changed; and the fan-blades F may be in either shell and at the top or bottom without departing from my invention.

I claiml. In a dust-collector, the combination, with an inclosingease having inlet and outlet openings and a shaft journaled therein, ot a hollow conical shell open at each end mounted on said shaft, with its smaller end arranged to receive the air from the inlet-opening, a series of fan-blades inclosed in said shell and arranged to revolve therewith, an annular disk connected eoncentrieally therewith, having a raised outer edge adjacent to and projecting beyond thelarger end of said shell, and with its central opening arranged to discharge the air into the outlet-opening, all constructed and arranged substantially as showmand for the purpose specified.

2. The combination, with the case A, having the openings a a and outlet a2, of the shaft C, mounted therein, bearing the shells D D', annular disks I I', and fan-blades F, all constructed and arranged substantially as shown, and for the purpose specified.

3. rlhe combination, with the case A, having openings ad a2, of a shaft C, mounted therein, bearing fan-blades F, shell D, and annular disk I', arranged to discharge the air into outlet a', and Scrapers connected with said annular disk I', substantially as shown and described.

In testimony that I claim the above I hereunto set my hand.

RAMA R. WA'llERS.

In presence of- C. IIUMPI-ianr, l II. STUART.