US753152A

US753152A - Feitz august loeschee

Info

Publication number: US753152A
Authority: US
Publication date: 1904-02-23
Anticipated expiration: 1921-02-23

Description

No. 753,152.1 k PATENTBD PEB. 23, 1904.

' P.. A. LOESCHER.

HULL-IG AND SGOURING MAGHINE.

. APPLIOATION FILED SEPT. 5, 1900. v

No MODEL. 2 SHEETS-SHEET 1.

om". D. n.

No. 753,152. PATENTE-D PEB. 2s, 1904.

' P. A. LoBscHBR. v

HULLING ANDA SGOURING MACHINE.

APPLICATION FILD SEPT. 5, 1900.

N0 MODEL. 2 SHEETS-SHEET 2.

Patented February .23, 1904.

PATENT OEEICE.

FRITZ AUGUST LOESCHER, OF PORTLAND, OREGON.

,HULLING AND soouRlNe. MACHINE.

SPECIFICATION formingr part of Letters Patent No. 753,152, dated. FebruaryY Y23, 1904.

Application filed September 5, 1900. Serial No. 29,089. (No model.)

To all whom, it may cori/cern:

Beitlrnown that LFnrrz AUGUST LoEsoHER, a citizen of the United States, and a resident of Portland, in the county 'of Multnomah and State of Oregon, have invented a new and use ful Improvement in Hulling and Securing Machines, of which the following is a specification, reference being had to the accompanying drawings as a part thereof.

My invention relates to machines for hulling and scouring rice and other food material of the grain form. My machine was more especially designed for rice; but it may also be advantageously used for other grains.

All grains of the character of rice require to be thoroughly scoured in order to remove their outer coating or bran and their germ. This required treatment of the grain by the machines heretofore in use was unsatisfactorily accomplished. W'hen adjusted to perform their work expeditiously, their treatment of the grain was too rough, excessively heating the sameand breaking too` large a percentage of the kernels, and when adjusted to not lbring about v such undesirable result then the scouring was generally imperfectly done and it was necessary to run the grain several times successively through ,the machine before satisfactory results could be obtained. Such procedure would of course consume considerable time, with the effect of'diminishing the capacity of the machines and increasing the cost of production.

The object of my invention is to overcome the defects above referred to and effectively and expeditiously scour and perfectly clean rice and grains in large quantities. To accomplish this work, one of the features of my invention is thatthe grain to be scoured falls to the bottom of the machine, and here the scouring operation begins, the grain being gradually worked outward by centrifugal force into a peripheral casingV encompassf course, thereby lengthening the period of time during which it is subjected to the work of the scouring devices. VThe mechanism and contrivances wherebyT this work is accent plished by my machine, aswell as the general construction and features of the latter, are illustrated in the accompanying drawings referred to. Y

In the drawings, Figurel is a longitudinal vertical section about centrally taken through' my machine. Fig. 2 is a longitudinal vertical section of the housing Z, inclosing the runner f. Fig. 3 is a side elevation of such housing. Fig. 4 is a plan section of my machine on a line 1 1 of Fig. 1. Fig. 5 is an enlarged' vertical section giving a detail of the means for alining or leveling the housing UZ. Fig. 6 is a partial vertical section of the outlet part of the housing al. Fig. 7 is a partial front elevation of said outlet. Fig. 8 is a partial plan section showing a portion of the plate and

casings

13 and 14, being a part of the housing al, and the perforated ears 15H 8 for securing the said parts. Fig. 9 is a partial vertical section of the bearings for the foot of the shaft e, supporting the runner f. Fig. 10 i shows a modification in the perforations of the casing 14, which will be more fully explained in the body of this specication. Fig. 1l is a partial plan section through such perforated casing 14; and Fig. 12 is a plan section of the central bearing lfor the shaft c, such section being taken on a line pointed by the arrow 2 inFig. 1. 4

The letters and numerals designate the parts referred to in the description of my invention hereinafter given.

My machine is supported on a table e, the standards or legs ai' of which rest on a base la. In the central part of such base is attached a block c', centrally perforated, and on this is secured a box j, having a iianged base and a lug for the short end of the levermto rest on. Said lever has `an eye orring n, and the extremityA of the long end thereof is attached to a rod 0, having a threaded upper extremity extending through a bearing p and being Vertically adjustable by means of hand-wheel g. In the eye or ring n of the lever fm is inserted a box r, supporting the base of the shaft e by IOO its spindle s, as illustrated in Fig. 9. The central portion of the shaft e is supported in the box t, secured to the under side of the table a and having segments of bushing u, faced with babbitt or like serviceable material, adjustably set against the shaft e by means of set-screws o, as shown in Fig. 12.

On the upper end of the shaft'e is aiiixed a runner f. Such runner comprises a cast-iron annular box w, having a central opening in` closed by an upwardly-tapering annular wall y, provided with ribs centrally holding an eye z, in which the upper end of the shaft e is keyed. The casing of the runner f is filled up with cement 4, the upper surface of which is sloped inwardly, as shown in Fig. 1. On the portion y is mounted an extension 3, being in form of a truncated hollow cone and having a flanged perforated base for bolting the same to the part y. The bottom and the circumference of the runner are faced with a working surface, being coated with emery 4a l toa depth of about three-fourths of an inch.

The runner is provided with vertical holes 34 in which to fill shot, so as to-balance the runner.

On the upper surface of the table a" is mounted a cast-iron plate b, having peripheral openings 6, which extend through the table and communicate with a dust-chamber 7, provided on the under side of the table. The plate is adjustably supported on the table, for which purpose said plate is provided with perforated ears 8, disposed about the rim of such plate, in which ears are inserted set-screws 9, the upper ends of which set-screws are squared, so as to be adjustable by the key. The base of the set-screws rests on blocks of metal 10 set into the surface of the table, and a nut 11 is placed on the set-screw under the ears 8, so that by adjusting the set-screw 9 the plate may be properly leveled. 'The plate I) is held against lateral displacement by means of ringsegments 5, which are affixed to the table. rlhe upper surface of the plate has also a coating of emery Z2,so as to cooperate with the under side of the runner.

The runner rotates in a housing comprising a top or roof 12 and two annular walls or casings 13 14. The outer wall or casing 13 has perforated ears 15, whereby it may be secured on the rim ofthe plate b. 1t is also provided with doors 16 for obtaining access to the dustcompartments between the partitions 17, which compartments communicate through the openings 6 with the dust-chamber 7. The walls 13 14 are secured to the annular rim on the under side of the top 12, and said walls are united by the partitions 17. The inner casing is provided with elongated perforations which extend in opposite directions and are grouped in series 19 20. The obj ect of grouping such perforations in series and arranging such series alternately with each other is to impart to the scouring grain an up-and-down travel while it is subjected to the treatment of the runner, the perforations being made by strikingthrough the metallic casing 14 inwardly, as illustrated in. Fig 11, and thus leaving slightly-protruding marginal rid ges about the verge of such perforations, which ridges cause the grain to travel up and down while undergoing scouring, as mentioned. Since the object of the alternating series of perforations 19 20 is to prolong the travel ofthe scouring grain through the machine and the scouring treatment thereof, instead of having such groups of perforations arranged as shown in Fig. 2 the sections 19 2O may be respectively modified to the structure illustrated by c g in Fig. 10-that is to say, so that each section shall comprise alternating perforations,` the perforations being grouped in series one-above the other and extending in opposite directions, as shown in Fig. 10. rlhe outlet for the scoured material through the housing CZ, encompassing the runner f, is provided with a gate comprising two adjustable parts 21 218. My object in such construction is, to enable one to adjust the gate according to circumstances-that is to say, when the rice is to be subjected to all the scouring the ma chine can perform the upper section 21a is raised to within three inches of the top of said outlet, so as to bring -the latteras close tothe roof of the casing as possible, the rice being required to work its way up to the discharge-level of such spout. Of course the longer the rice is retained in the casing about the runner the more scouring it will undergo. When, however, the rice will not stand so much scouring, then said upper section 21 is let down to about six or seven inches below the roof of the casing, and consequently the rice will then run out of the machine at a much lower level and much sooner than under the first-mentioned adjustment of said gatesection. The described feature of said gate is essential to enable the machine to handle different grades of rice or grain. On either side of such outlet are provided projecting' walls 22 23, the former being attached to the inner casing 14 and the latter to the outer casing 13, and an apron 24, hinged between the walls 22, projecting from the inner casing, operating to direct and discharge the scoured grain into the spout 25. As the vibrating of the machine while in operation is apt to displace the door-section 21a and gradually drop the same, such door may be provided with a threaded rod 26, extending through a perfo- IOO IIO

IIS

ration in. a ledge projecting from the outer casing above the outlet and provided with a nut 27, by adjusting which the door-section 21n may be fixedly held in any desired elevation. A similar arrangement may be provided for the door-section 21 to hold this up y supported in the inlet of my machine by a tripod 30, two arms of which are only shown, having set-screws 31. From one end of the dust-chamber 7 extends a pipe 32, connected with a fan or air-suction apparatusY 33, the function of which is to remove the refuse, and the continuous current of air likewise serves to keep the grain in a cooler state while undergoing scouring. The shaft e is operated by a belt running from the. power-generator to the pulley 35.

The operation of my device is apparent from the description of its mechanism. The grain being fed into the machine through the hopper falls to the bottom and is continually held together in a compact mass, so as to be subjected to the treatment of the scouring devices throughout its travel through vthe machine. The grain is gradually moved outwardly toward the periphery of the runner f and enters the final-scouring chamber, which exists between the circumference of the runner and the inner casing 14, where the more effectual scouring is done with least danger to the kernels of the grain. The grain by its own gravity is continually kept in a compact mass until it reaches its outlet, during the travel to which it is tumbled and rolled over and over and driven first in one direction and then in the other by reason of the zigzag arrangement of the perforations in such inner casing, and thus is substantially assured the effective and complete scouring of each kernel of the mass ofv grain under treatment.

The inner surface of the perforated casing 14 is not designed to take part in the scouring of thegrain, but merely guides the same up and down against the roughened or scouring peripheral surface of the runner and allows the refuse to be moved through the perforations by the action of the air-suction.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a scouring-machine, the combination with the table and the runner, of the plate, b, having perforated ears, set-screws 9, inserted in said ears, nuts on the set-screws, on which nuts the plate rests by its said ears; blocks set into the surface of the table on which rest the set-screws; means for holding the plate b against lateral displacement, and the outer and also receive the set-screws, 9, and nuts on the latter to secure the casing in place, substantially as described.

2. A scouring-machine comprising a table, the top of which has peripheral openings, a dust-chamber, 7, on the under side of the table, a pipe, 32, leading therefrom, and an exhaustfan; a plate, Z1, also having peripheral openings corresponding with those in the tabletop; the runner, f, having a central feed-opening, a casing for the runner comprising a roof or top, 12, outer wall, 13, and inner perforated wall, 14, the same being secured to` the rim, 18, on the under side of the top, and unitedA by the partition, 17 g doors, 16, in the outer wall between said partitions; means securing the casing on the plate, b, and adjustably supporting the plate, on the table-top; a discharge passage-way in the casingof the runner, a gate controlling such passage-way, such gate consisting of two vertically-adjustable sections; and means for securing said gate-sections in place as adjusted, substantially as described.

3. A scouring-machine comprising a table, the top of which has peripheral openings, a dust-chamber 7, on the under side of the table, a pipe 32, leading therefrom and an eX- haust-fan; a plate also having peripheral openings corresponding with those in the table-top; the runner f, having a'central feedopening; a removable funnel-like hopper discharging into said feed-opening and provided with a gate for controlling such discharge; a casing for the runner, comprising a roof or top 12, outer wall 13, and inner perforated wall 14, the same being secured to the rim, 18, on the under side of the top, and united by partitions 17; doors 16 in the outerwall between said partitions; means for securing the casing on the plate Z, and adjustably supporting the plate on the table-top; a discharge passage-way in the casing of the runner, a gate controlling .such passage way, such gate consisting of two vertically-adjustable sections, and means for securing' said gate-section in place as adjusted, substantially as described.

In testimony whereof I have hereunto affixed my signature, in the presence of two witnesses, this 23d day of August, 1900.

FRITZ AUGUST LOESCHER.

IOO