US351307A - Fifths to benjamin o neill - Google Patents

Description

(No Model.) 2 sheets-sheet 1. E. J. BRINKMAN.

vMIDDLIlYrGfs PURIPIER.

No. 351,307. Patented Oct. 19, 1886.

111ml!!! llnllllllnlllmn N. PUEHS. Phnwmhagmpher, wnhmgmm D, (I

(No Model.) 2 Sheets-Sheet 2.

H. J. BRINKMAN.

MIDDLINGS PURIPIER.

No. 351,307. Patented Oct. 19, 1886.

N. PUERS. PMwLilhognpher. washington. n.0.

UNITED STATES l PATENT OFFICE.

HENRY J. BRINKMAN, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF 'IVVO-V FIFTHS TO BENJAMIN ONEILL, OF SAME PLACE.

MIDDLINGS-PURIFIER.

SPECIFICATION forming part o Letters Patent No. 351,307, dated' October 19, 1886.

Serial No. 188,707. (No model.)

To all whom it may concern.-

Be it known that I, HENRY J. BEINKMAN, a citizen of the United States, and a resident of Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain Improvements in Middlings-Purifiers, of which thefollowing is a specification.

My invention consists, generally, in the construction and combination hereinafter described, and particularly pointed out in the claims.

In the drawings forming part of this specification, Figure 1 is a Vertical section of a Inachine that l have devised for carrying out my invention. Fig. 2 is a sectional end elevation of the same, Fig. 3, a detail of a modification. Fig. 4 is an enlarged detail.

In the drawings, 2 represents the casing of the machine, which is of suitable shape and construction. Within this casing is a vertical frame, 3, that is hung upon links 5, pivoted to the frame and to the inner walls of the casing or frame of the machine. Eccentric-shafts 7 are journaled upon the outside of the casing, and connecting-rods 9 pass from the shafts into the casing and are connected to the frame 3. The shafts 7 are connected by belts 11, by which power is communicated from one shaft to the other. In order that the eccentrics may move in unison, I provide a connectingrod that is connected to a crank-pin upon a disk on the end of each crank-shaft. These eccentric-shafts are driven at a high rate of speed, and they give to the suspended frame a rapid vibratory motion.

In the frame 3 are a series of inclined screens, formed of boltingsilk or otherscreening material. This silk is preferably secured by tacking it to wooden strips or bars 16, fastened to the frame 3. A corrugated metal plate, 19, is arranged at a short distance from the silk, and on a plane substantially parallel with its surface. Ihese plates are secured to the frame 3 in any suitable manner. I provide the inclined valves 25, which extend the full Width ofthe screen and are pivoted to the sides of the frame 3. The material that goes over the screens falls upon these valves and slides down their inclined surface onto conductors 27, arranged at the upper end of each screen below the rst one. From the conductors 27 the material falls onto the upper part of the screen below, and so on through the machine. I prefer to arrange an inclined conductingboard, 29, beneath the upper part of each screen. This board directs the material that passes through the screen onto the upper part of an inclined plate or board, 23, that extends from the lower end of one screen t0 the top of the next. Upon the board 23 are gather-boards 24., which direct the material into spouts 31, there being preferably a separate spout for each section of the screen. These spouts are provided with the valves 33, by means of which the material may be directed into any spout or spouts desired.

I provide means for jarring each section of the screen,in order to clear the same. A series of shafts, 35, are journaled across the frame in the rear of the screens, as shown in Figs. 1 and 4. Each of these shafts is provided with a knocker, 37, one at each side of the frame, in line with the strips to which the cloth is secured. Upon these strips I place the arched metal plates or bumpers 39, opposite the knockers on the shafts. The shafts revolve at a slow rate of speed, and when the knockers are in position nearest the frame 3 the bumpers are brought against the ends of the knockers, thereby giving a slight jar to the section of the screen, which knocks oft' any adhering material. The knockcrs are preferably arranged at different points on the several shafts, so that only one set of knockers is in position for operating at the same time.

rIhe shafts 35 are driven by a chain, 11, that passes over sprocket-wheels on the ends of the shafts. This chain preferably passes upon one side of one shaft and the opposite side of the next, as shown in Fig. 4.

A suction-fan, 21, is located in the casing, preferably near the lower end thereof, and the casing is made With closed Walls on that side of the frame 3 in which the fan is located.

The other side of the casing is open, so that so as to regulate the current through the screens.

As the frame .is rapidly vibrated back and forth the material is thrown from the surface of the silk into and against the corrugations This action detaches the 25. The current from the top of the plate passes over the conductor 27 vand throughthe material that falls from the valve 251 onto this conductor. This current also takes with' it some of the light or fluffy material.V A portion of the air is also drawn-through the space above the valve 25. The result is that the light:material-bran-scales, &c.-is fully detached from the middlings or grits,without causing the latter to iiour, and the materialV is thoroughly exposed to the air-currents,where by the light stuff is carried away.

The plate or board 23 may have'an opening through it,which is covered by a hinged'valve, 24, as shownin Fig. 4. When this valve is raised, air passes through theV sheet of material as it falls from the edge of t-he valve,'and carries with it through the plateanysmall specks of light material that may pass through the cloth. This portion ofthe current passes over the edge of the valve 25 andiaids in aspiratin g the material that falls from 4the screen:

Instead of the corrugated plate, IA may use as beater' barsor surfaces a series of stripsth'at extend across the screens, at a short distance therefrom and in substantially ,th-e positionnecupied by the lower parts ofthe corrugations of the metal plates, as shown in Fig. 3. VThe material will be thrown back and forth between the silk and these bars, and the air-'cur rent will pass directly through them, carrying the light material with it. The corrugated plates may be provided with a series ofopenf` ings, and with regulating-valves, if desired. In each instance as the material passes down theinclined screfns it is thrown against beatersurfaces and at the same time subjected to a current of air that passes upward through the v screen. The several screens or sections areof progressively coarser mesh from the top toward the bottom.

A spiral conveyer, 8l, is arranged beneath the screens to carry out the material that falls from the lower screen.

Iprefer to provide an opening, 89.in the wall of the casing, which may be provided with asui table regulatin g-valve, th rough which air is admitted between Ythe screens and the fan when it is desired to lessen the force of the current through the screens.

A suitable hopper is secured to the top of the main frame or casing. It is provided with a suitablegate, and the top of the frame 3 is provided with a feed-board, 85, over which the material is fed. An inclined board, 87, is arranged beneath the feed-board, and aids in directing the material into the space between the silk and the corrugated plate.

l It will be seen that the screens are arranged at a greater inclination than is usual in machines of` thisA class. By this arrangement as the material passes down the screens smaller openings arepresented, to it than'when` the inclination is less, while the openings are-presented in full size to the ai rJCurreuts.

I' claim as myinvention- 1. In a.middlings.purifier, the combination, i with avibrating frame, ofi one or more inclined ,frame and theseries'oil` inclined screens carri'ed-'by said frame, of thecorrugated plate arrangedin said frame over said screens, and means for producing al current of air through said screens, substantially as described.

3. The combination, in a middlings-puriiier, with thevertical frame supportedfuponl hangers, and means for'vibrating saidfram'e, ofthe series of inclined screens carried'by said frame, the corrugated plates: secured to said frame over said screens,valves arranged below'said plates, and mea-ns for producing a current' of air through said screens, substantially as described.

4. The combination, in a middlin'gsLpuritier, with a vertical frame supported `upon* hangers, and means for vibratingsaid frame, of the series of incli ned screens carried by saidsframe, a series of' bumpers, 39, on 'saidv frame, a series of shafts, 35, and knockers 37, arranged at different angles on said shafts and adapted to engage said bumpers, for the purpose set forth. 5l The combination, in amiddlings purifier, of avibrating frame, aseries of inclined screens carried by said frame, a series of -beatersplates mounted in saidl frame over said screens, and means for producing a current'of air through said screens, substantially as described.

HENRY J. BRINKMAN. vVVit'nesses:

A. C PAUL, R. H. SANFORD.

IOO

Images