US615618A

US615618A - Wggwbottom

Info

Publication number: US615618A
Authority: US
Publication date: 1898-12-06
Anticipated expiration: 1915-12-06

Description

Patented Dec. 6, I898.

J. HIGGINBOTTOM.

SEPARATING MACHINE.

(Applicatiop filed Apr. 16, 1896. Eenewed Nov. 15, 1898.)

(No Model.)

6 Sheets-Sheet l.

WILFIEEEES Qm/ m: NORRIS PETERS co.. woruumo, wnuiwsm Patented Dec. 6, I898.

J. HIGGINBOTTOM.

SEPABATING MACHINE.

(Application filed Apr. 16, 1896. Renewed Nov. 15, 1898.)

6 Sheets-Sheet 2.

-Illllll WIEIESEEE ZIW m: Npwms PETERS co, worn-1mm, w

Patented Dec. 6, I898.

J. HIGGINBDTTOM.

SEPABATING MACHINE. (Application filed. Apr. 16, 1896. Renewed Nov. 15, 1898.)

(No Model.)

6 Sheets-Shaet 3.

m: NORRIS Farms 00., mom-U150; WASHINUTON, u. c.

No. 65,618. Patented Dec. 6, I898.

J. HIGGINBOTTUM. Y

SEPARATING MACHINE.

(Application-filled Apr. 16, 1896. Renewed Nov. 15, 1898.)

(No Model.) 6 Sheets-Sheet 4.

I TV W m I I LO m: mains mzns'cou PNOTD-UTNQ wnsumcron. o. c.

' No. 615,6!8. Patented Dec. 6. I898.

.1. HIGGIN BOTTOM.

SEPARATING MACHINE.

(Application filed Apr. 16, 1896. Renewed No'v. 15, 1898.)

(No Model.) 6 Sheets-Shut 5.

WIEEEEE 5g 1 l hghjr W 5 I j! I m1. 6|5,6I8. Patented Dec. 6,1898. J. HIGGINBOTTOM. SEPABATING MACHINE.

(Application filed Apr. 16, 1896. Renewed Nov. 15, 1898.) (N0 Model.) 6 Sheets-Sheet 6.

Egg 5g I Nirnn STAT-Es PATENT OFFICE.

JAMES HIGGINBOTTOM, OF LIVERPOOL, ENGLAND.

SEPARATING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 615,618, dated December 6, 1898. Application filed April 16, 1896. Renewed November 15, 1898. Serial No. 696,519. (No model.)

To all whom it may concern:

Be it known that 1, JAMES HIGGINBOTTOM, milling engineer, a subject of the Queen of Great Britain, residing at Liverpool, in the county of Lancaster, England, have invented certain new and useful Improvements in Separating-Machines, of which the following is a specification.

This invention is applicable to machines having rotary or vibrating sieves in which the currents of dust-laden air are generated; and one of my objects is to provide an apparatus which will separate the dust from the dustladen air in the machine itself and in a more effective manner than hitherto.

The invention is best described by aid of the accompanying drawings, in which- Figure 1 is a longitudinal section of a machine. Figs. 2, 3, 4, and 5 are transverse sections on the lines A A, B B, C O, and D D of Fig. 1, respectively. elevation, and Fig. 7 a transverse section, of the nozzles X, enlarged, above the first part of the sieve, hereinafter mentioned. Fig. 8 is an enlarged elevation, and Fig. 9 an enlarged section, of the group of nozzles N. Fig. 10 is an enlarged elevation, and Fig. 11 an enlarged section, of nozzles N of Fig. 1. Figs. 12 and 13 are a vertical section and plan, on an enlarged scale, of cones E. Fig. 14 is an enlarged section of nozzles F The machine set forth in the drawings is designed to separate or purify semolina, middlings, and the like, and to clearly illustrate the action of the machine I'will describe the method I prefer of working the machine when it is separating or purifying semolina, which will pass through grits gauze-silk having a mesh of twenty threads per inch and which will not pass through grits gauze-silk having a mesh of twenty-two threads per inch.- The sieve used over the head compartment H of the machine is clothed with grits gauze-silk having a mesh of twenty-four threads per inch, or of such a degree of fineness of silk as would prevent the semolina from falling through the sieve, and the sieve over the tail compartment H would be covered with grits gauze-silk having a mesh of eighteen threads per inch, or of such a degree of coarseness as would permit the semolina to fall through the sieve into the bottom hopper.

Fig. 6 is a longitudinal In the drawings, K is the feed-hopper, and K feed-roll feeding the semolina onto the sieve S.

G is a section of the fan, and this section is taken on the bent line L L of Fig. 2 in order to more clearly illustrate the working of the invention.

X is a tray having a series of long perforations, above which are mounted the longitudinal nozzles and hoods X, set forth in detail in Figs. 6 and 7. The hoods are supported by wire supports, as shown.

M is a channel into which the dust deposited on tray X falls with the shaking of the sieve.

S and S are continuations of the same sieve S.

P and P are partitions separating the space above the sieve, and in the case of I" below the sieve also, into separate compartments.

X and X are two trays delivering the dust collecting on them into channels M and M respectively.

F is a second fan with an aperture F from this fan leading to chamber F Chamber F has depending therefrom a large series of downward-sloping and downwardly-flaring cones E, having their small ends projecting into it. These cones are shown on a large scale in Figs. 12 and 13. The sectional area of the cones at their large end being very much larger than at their small end, the current of air passing down through the cones is lessened in velocity, and is hence unable any longer to carry dust which is still in suspension. It therefore deposits the dust on the sides of the cone, and as it collects it falls down into the trough to one side and is collected by the worms E E of Fig. 2. Some of the dust, however, separates in the chamber F and is carried away by the worms E E I prefer to make the aggregate area of the small ends of the cones entering the chamber equal to the cross-sectional area of the aperture F. The air leaving the cones passes into chamber F and from there through apertures F in the top or sides, or in some cases, where the machine is dealing with heavy grain-seeds or with wheat or semolina and where strong and intense velocities of aircurrents must be used, I arrange to close the air-discharge apertures F in the dust-collecting apparatus, and instead of allowing the air to be discharged from the machine I place air-conduits F Fig. 5, to carry the air to a chamber F underneath the sieve of the machine, as shown in Figs. 1 and 5. The air entering chamber F rises through the sieve S and through the nozzles N on the tray X the sides G and cones E may be constructed of paper, cardboard, or other non conducting material to prevent condensation where the dust-laden air contains vapor.

Reverting now to the front part of the machine, the air ascending through the nozzles. N, already mentioned, enters the chamber G and from thence to apertures G to the fan G, from whence it is ready to again descend through the nozzles X and sieve S, thus completing an air-circuit. The valves G and handle G Figs. 1 and 3, are for adjusting the volume of air passing through this circuit. The action of such air-circuit upon the semolina being treated is as follows: The dust and small particles adhering to the semolinafeed are carried by the downward air-circuit through the sieve S into the chamber H. The air rising through the sieve S and through the moving semolina thereon carries away the semolina of a lighter specific gravity up through the nozzles N and deposits the same on the nozzle-tray X and from thence such semolina is discharged to the outside of the machine by the channel M The separation made depends upon the velocity of the aircurrent. The semolina going to the machine usually contains aportion of the outer branny skin of the wheat. These are much lighter in specific gravity than the lightest of the semolina itself. Such pieces of skin are carried by the air-circuit through the fan and discharged into the chamber G, where they are deposited upon the nozzle-trays X and removed from thence to the outside of the machine by the channel M. The semolina, which has now been separated by the air-current, passes to sieve S, where it may be subjected to a second air-current for the purpose of a further separation and purification of the semolina. The semolina, separated and purified by the sieve S passes to the bottom compartment H and the material separated by the air passes to the outside of the machine by the channel M having been first deposited on the tray of nozzles X From M it escapes up a discharge-box T. I declare that what I claim isp 1. In a separating device, the combination of an inclosing casing a fan havingan exit delivering the air into the closed chamber above the sieve, a sieve of finer mesh than the valuable material to be cleansed and having a shaking device and a nozzle-tray above the sieve in combination with a second sieve receiving the materials from the first sieve, open below to the current, which is passed through the first sieve, a dust-collecting tray above this sieve separating the sieve from a closed chamber above, a passage from said closed chamber to the fan, and means for throttling the current of air in some portion of the circuit, substantially as and for the purposes described.

2. The combination of an inclosing casing a vibrating sieve of finer mesh than the diameter of the valuable material to be sifted, a collecting-tray with hoods above the sieve separating the same from a closed chamber, and a fan for passing into the closed chamber a current of dusty air from another part of the machine, whereby the majority of the dust in the air is collected on the dust-collecting tray before passing through the sieve and the current carries off through the sieve the dust and small particles mixed with the valuable material.

3. The combination of an air-current-forming device such as a casing and a fan having a delivery into a closed chamber above a sieve, a sieve below of smaller mesh than the valuable material to be sifted, forming the fioor of this chamber and having a shaking device, a closed chamber below the sieve, and a second sieve receiving the material from the first sieve open below to the current of air that has passed through the first sieve, a collecting-tray between this second sieve, and a second chamber above the sieve delivering into the fan, whereby the dust driven out of the material to be sifted is deposited in the chamber below and the current is then used for separating light particles from the material, which light particles are deposited on the dust-collecting device in the chamber above it and no dusty air is allowed to escape from the machine.

4. In a separating-machine, the combination of an inclosing casing a sieve having mesh smaller than the material to be sifted, apparatus for shaking the same, means for producing a current downwardly through the first portion of the sieve and upward through the middle portion of the sieve in combination with a division separating the space above and below the tail portion of the sieve from the middle portion except immediately above the sieve and a'separate device aspirating a current of air through the tall portion of the sieve in an upward direction and means for separating the light particles and dust from this current.

5. In combination with a sieve, a tray of nozzles above the sieve, a dust-depositing chamber connected with the space above the tray, a connection from the dust-depositing chamber to the space below the sieve and a wardly-flaring cones depending from said eascasing and fan for causing a continuous ciring through which cones the air passes downculating current through these several parts. wardly.

6. In a separating device, the combination In testimony whereof I have signed my 5 with the inclosing casing, the sieves and the name to this specification in the presence of I 5 means for supplying to the sieves the matetwo subscribing Witnesses.

rial to be operated upon, of a fan-case and a JAMES HIGGINBOTTOM. fan for passing air through said sieves, a \Vitnesses: chamber into which the air is delivered after G. C. DYMOND,

10 leaving the sieves, and a series of down H. P. SHOOBRIDGE.