US2134452A - Shaker conveyer - Google Patents

Description

Oct.' 25, 1938. R. MOORE SHAKER CONVEYER Filed June' 1, 1956 2 sheets-sheet 1 Oct. 25, 1938. R. MOORE SHAKER CONVEYER Filed June 1, 1956 2 Sheets-Sheet 2 @ge/f Patented Oct. 425, 1.938

`} I UNITEDN sjrATEs PATENT OFFICE rFhis invention relates to conveyers, and more particularly to a reciprocating trough conveyer which includes both inclined and substantially n horizontal sections, and in which the conveyance clined section was included.

of material upon the inclinedsection is to be up the inclination. l

' Since the conveyance of 'material by the reciprocating trough depends primarily upon the frictional engagement of the material with the trough and thisV frictional engagement is obviously effected by variations in the inclination of the trough, reciprocating conveyers as hitherto constructed have had distinct limits where an n- Obviously, `if the conveying capacity oi'the horizontal section is any selected quantity, theconveying capacity of the inclined section is a lesser quantity and pilingup of the material will occur at therjunction of the horizontal and inclined sections, withrthe `result that this material Will overflow the sides of the chute. Furthermore, if the incline of the inclined section exceeds a given grade, it is often `necessary to operate the conveyer mechanism with what is known as a hard conveyingmotion, more particularly described hereinafter, and

such motion vcauses both a higher consumption I of power and greater shock upon the mechanism.

i An important object of this invention is to so construct a conveyer mechanism including both inclined and horizontal sections that the conveying capacity of the Vinclined section will equal or exceed that of the horizontal section.

A further object of the invention is` the provision of a construction such that a single operating mechanism will suffice to impart to both conl veyer sections the desired conveying motions.

A further and more specific object of the invention is the provision in a conveying mechanism including inclined and horizontal trough sections of means for imparting to the inclined section a greater longitudinal reciprocation than is imparted to the horizontal section. r

4These and other'ob'jects I attain by the construction shown in the accompanying drawings wherein, for thepurpose of illustration, I have y Referring now more particularlyto ,the` draw.-

ings'the numerals I0 and I I generally designate horizontal and inclined conveyer sections, the inclined conveyer section `having an angularly bent nose I2 tting within and slidable upon the vinner surface of the horizontal section I0. The horizontal section I is mounted upon suitable roller supports I3, while the inclined section is mounted upon rocker arms I4 which are, in turn, carriedby suitable supports. The numeral I5 designates the usual shaker conveyer drive or jigger which, as well known to those familiar with the art, is a mechanism whereby through a system of cranks, rocker arms or other equivalent, a conveying motion is imparted to the trough. This motion is diagrammatically illustrated in Fi`g.5, the section S of the curve indicating the motion of the trough in one direction, While the section I-I indicates its motion in the opposite direction. It is possible that either of the sections S or H be employed in conveyance; that is to say, the material may be moved with either of these graphs representing the movement of the conveyer-in the direction inwhich the material is moving. It is, however, vastly preferred that that portion of the curve S be employed in the con-` veying direction, for as noted there are no abruptA velocity changes in this curve-,and it is, accordingly,v known as a "soft motion enabling the mechanism to pick up the weight of both the conveyer and the conveyed material ata smoothly accelerated rate, and atthe same time avoidingV scribed, I am able to utilize the curve S on the conveying stroke and at the Sametime eliminate the dierence in capacities ordinarily existing in the horizontal and inclined sections.

In accordance with my invention, the oscillating arms I6 of the driving engine I5 are connected through pitmans I'I with the horizontal trough section I0 to reciprocate the same. The

horizontal trough section Illis in turn connected through pitman I8 with one of the sets of rocker arms I4 Supporting the inclined section. The connection to these rocker.` arms is made intermediate the lengths thereof so that the longitudinal motion or stroke 4A imparted to the inclined section Il is greater than the stroke B imparted tothe section III. The material may thus he caused .tomove along the; inclined section II at the same, or even at a greater speed than upon the horizontal section. The conveying action of the inclined section may be further increased by so disposing rocker arms I4 that the motion is entirely at one side of a perpendicular passing through the pivots of the rocker arms and, accordingly, imparting to the trough the Wellknown tossing motion often utilized in shaker conveyers of this type. It may be further increased by employing a conveyer trough having a bottom so constructed as to increase the gripping action between the trough and the conveyed material, as, for example, an arrangement such. as shown in my prior Patent No. 1,997,495 which comprises a perforated plate disposed upon the bottom of the conveyer and adapted to receive in the perforations thereof particles' of the con'- veyed material which will, of. course,` have more frictional affinity for the material than the sheet iron or steel ordinarily employed in construction of such troughs. The rocker arms to which pitman I8 is connected are preferably pivotedA upon the base I9 of the conveyer drive engine i5 and so constructed that the pitman may be adjustably connected thereto, additional openings for the pinv of the pitman being indicated at Ida. The motion of the conveyer section H` being similar to that of the section I0, there is-comparatively little wearing action at the contact points of these sections, the only friction resulting.- from the extra longitudinal motion applied tothe inclined section.

Since the construction is obviously capable of considerable modification without departing from the spirit of my invention, I do not wish to be understood as limiting myself thereto except as hereinafter claimed.

I claim:

l. A reciprocating trough conveyer comprising relatively movable substantially horizontal and upwardly inclined sections, and means, for imparting a reciprocating conveying motion to` said sections causing movement of material placed thereon toward the upwardly inclined section, so constructed and arrangedv that-the motions of the sections are simila-r and havesubstantially identical time intervals whilethe inclined section is reciprocated through a greater longitudinal stroke than the horizontal section whereby to cause material moving thereover to'- travelat substantially the same speedf as that upon the horizontal. section;

2. A reciprocating trough conveyer comprising relatively movable substantially horizontal and upwardly inclined' sections, means; for imparting a reciprocating conveying motion: to the horizontal section causing movement of material placed thereon toward the upwardly inclined section and connections between saidfhorizontal and inclined sectionsso constructed and arranged that a conveying motion similar to that of the horizontal section is imparted to` said inclined section and the inclined section is reciprocated through a greater longitudinal stroke than the horizontal section whereby to cause material moving thereover to travel' at substantially the same speed as that upon the horizontal: section.

3. A reciprocating trough conveyor comprising relatively movable substantially horizontal v and upwardly inclined sections, means for: im'- parting a reciprocating conveying motion to the horizontal section causingV movementfof material placed thereon'toward the'upwardl'y inclined section and link and* lever connections'between the horizontal and inclined sections so constructed and arranged that the inclined section has imparted thereto a conveying motion the strokes of which are synchronous with and identical as to acceleration characteristics but of greater longitudinal extent than the strokes of the horizontal section whereby to cause material moving thereover to travel at substantially the same speed as that upon the horizontal section.

4. A reciprocating trough conveyer comprising relatively movable substantially horizontal and upwardly inclined sections, means for imparting a` reciprocating conveying motion to the horizontal section causing movement of material placed' thereon toward the upwardly inclined section, a support, a rocker arm pivoted to the supportv at oneend and to the inclined section at its opposite end and alink connecting the rocker arm and horizontal section of the conveyor, said link being connected to the rocker arm intermediate the ends thereof.

5. A reciprocating trough conveyer comprising. relatively movable substantially horizontal and upwardly inclined. sections, means for imparting a reciprocating conveying motion to the horizontal section causing movement of material placed thereon toward the upwardly inclined section, a support, a rocker arm pivoted to the support at one end and to the inclined section at its opposite end and. a link connecting the rocker arm and. horizontal section of the conveyer, said link being connected to the rocker arm intermediate the ends thereof, said rocker arm at the completion of the conveying stroke of said conveying motion being substantially perpendicular to the inclined section of the trough.

6. A reciprocating trough conveyer comprising relatively movable substantially horizontal and upwardly inclined sections, and means for imparting a reciprocating conveyingY motion to'said sections causing movement of material placed thereon toward the upwardly inclined section, so constructed and arranged that the motions ofthe sections are similar and have substantially identical time intervals while the inclined section is reciprocated through a greater longitudinal stroke than the horizontal section, the inclinedy section having an angularly bent nose-fitting withinand slidable upon the inner surface of the horizontal section.

rI. A reciprocating trough conveyer comprising relatively movable substantially horizontal and upwardly inclined sections, means for imparting a. reciprocating conveying motion to the horizontal: section causing movement of material placedl thereon toward the upwardlyinclined sectionv and connections between saidhorizontal and inclined sections. so constructedv and arranged that aconveying motion similar to that of the horizontal sectionA is imparted tosaid inclined section and. the inclined. section is reciprocated through a greater longitudinal stroke than the horizontal section. whereby the conveyed material will pass over said sections at substantially the same speed the inclined section having an angularly bent nose fitting within and slidable upon the inner surface of the horizontal section-- 8. A reciprocating trough-'conveyer comprising relatively movable substantially horizontal and upwardlyinclined sections, means for imparting ay reciprocating conveying'motion to the horizontal section causing movement of material" placed thereon towardth'eupwardly inclined section and link and lever connections between tl'iefhorizontal and inclined sections; so constructed: andf arranged that theinclined section hasimparted thereto a conveying motion the strokes of which are synchronous with and identical as to acceleration characteristics but of greater longitudinalv extent than the `strokes of the horizontal section relatively movable substantially horizontal and inclined sections, means for imparting a reciprocating conveying motion to the horizontal section, a support, a rocker arm pivoted to the support at one end and to the inclined section at ,its opposite end and a link connecting the rocker arm and horizontal section ofthe conveyer, said link being connected to the rocker arm intermediate the ends thereof, the inclined section having an angularly bent nose fitting within and slidable upon the inner surface of the horizontal section. 10

ROSCOE MOORE.

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