US1873865A - Apron conveyer - Google Patents

Description

Aug. 23, l932. T ALLSOP 1,873,865.

APRON CONVEYER Filed Sept. 2, 1931 Wl TNESSES TTRNEYS. l

Patented Aug. Y23, 1932.

'rHoMAs ALLsor, oIfMoUnr AIRY, PENNSYLVANIA, `AssIerivon 'ro 'TI-IE PHILADELPHIA ;iDnYINe MACHINERY COMPANY, or :PIIILADELPHIA PENNsYLvANIA,A CORPORA- TIN v OFV PENNSYLVANIA 'This inventionV relates v.generally to apron conveyers and, more particularly, to the type .commonly known as sectional conveyersuse- .7, ful, for' example, to transport material in "'59 loose orbulk form through treating apparatus, such as' drying andy conditioning machines. V

Conveyers of the kind referred to usually ,M comprise perforate sections pivotally con- ViQ'neCtedjin sequence and suitably sustained between spaced,progressing means.

An important object of this invention is to provide a sectional conveyer,of the rex., ferred to form, characterized by 'novel feai5 tures eli'ective to positively prevent sagging at the unionrof consecutive sections.

Another object is to provide an endless ,sectionalr conveyor which functions smooth- VA ly atall times, as well as when negotiating '""o curvilinear paths or passing around the sprockets whereby such conveyers are usually progressed. l Y Other objects of myvinvention will appear fr Vfrom thefollowing description which is 'directed to a practical embodiment thereof,

reference being had to the accompanying sheet of drawing forming apart of this specification; while thefeatures of novelty are ,.7 more particularly expressed in the claims W4'550 hereto appended. Y I In the drawing j Fig. I is a fragmentary longitudinal section of a portion of an apron conveyer em- ,.,V- T bodying the present improvements.

" 35 Fig. II is a partiall plan view of the'pre- 'ceding illustratiomtaken as indicated by the l components arrows II--II thereabove; and, y

' Fig. III is a vertical section, taken as indicated by the arrows III-III in Fig. II. Referring more in detailrto the drawing, the numeral 5 designates one of a pair of Yspaced sprocket chains, one only being shown to avoid unnecessary illustratiomthatjointly support between them a series of screen sections 6. Each chain 5 is composed-of double links whereof the outside components are indicated at 7 and the inside at 8, the components of the contiguous links interlapping at their ends and being connected by pivot pins 9. In order to serve as spill n Application filled.V September 2, 17931. Serial No. 560,743,

Vne'sfs across the width of the conveyer,

i215 (Fiss VVrelation to the screen sections 6; while the Arnon y i coNvEYEn preventing guards, at the sides of the conveyer, the in-sidev chain components 8 are vmade of a suitable depth so as .to extend well above the screen sections 6, and they project .i

.at their'ends beyond the pivot pins 9 so` as to overlap even when rounding the progressingl sprockets, the pitch. line of one ofwhi'ch is indicated by a dot-and-dash line 10 in Fig.

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I. Rollers 12ar'e mounted on the pivot bush- I ings'orfpins 9, between the link components 7,'8, and adapted kto travel along suitable guiderails 11, so that the conveyer is supported against sagging under load.

Each screen section 6 is made from'suitable mesh wire screening, of a width closely approximating the distance between the in-side chain components 8, and of an'over-alllength substantially ycorresponding,with the dimen- `sion intervening'the axes of the successiveA pivot pins 9.` Furthermore, it is `tobe particularly noted, lI appropriately fashion the longitudinal wires of each' screensection 6, soas to provide a series of end eyes' or selvage loops 13 in axial alignment,'for a purpose later on again referred to.V 1 Y Extending between and in alignment with the Vaires or pivot pins 9 of the sprocket Vchains y5 are transverse girts 14, which are supported at their ends by angle-brackets 15, in turn. clamped, bysuitable Vsecuring means suchv as bolts 16, to laterally turned flanges '17 'integral with the 1in-side components 8 of said sprocket chains, with interposition of the adjoining screen section corners,`as is 'obvious yfrom the drawing. Each girtl't'comprises f Aopposed symmetrical rectangularly-grooved 18 with flanking Vco-'planar vflanges proportioned to give sufiicient stiffand at theirlower flanged portions, as'viewed in Figs; I and III, they are rigidly connected, as by rivets 19. Between the upper flanged `portions of the girt components 18y thereis clamped, as by rivets 19,'a section 20 yof woven wire mesh provided with selvagev loops I and III) as above .described'in girts '14 are secured to the brackets lby bolts These loopsvl` of the girt sections20, as well as loops13 of the screensections 6,

jointly afford aligned bearing elements for the hinge wires or rods 23, which are introduced through the loops 13 and 21, in an obvious manner, so as to form a hinge connection the axis whereof is in direct axial alignment with the axes of opposing sprocket chain'pivotjpins 9. fIt is to be noted,'how ever, that the loops 13 of the screen sections 6 are arranged to permit a limited `amount of lateral movement; while it is to be par ticularly remarked that the supporting girts 14 are located directly below the hinge wires or rods 23, whereby the latter are maintained in positive axial alignment at all times with respect to the sprocketchain pivot pins 9. A From the foregoing it will be apparent that by supporting the girts 14 at ltheir ends, through the medium of the brackets 15, rigidly relative to the chain components 8, that said girts in turn similarly support the hinge wires or rods 23 across the whole width of the conveyer by means of the loops 13, 21, which thereby eHectively prevents sagging lof said wires or rods, with resultant smoother functioning of the conveyer when operating and passing around its progressing sprockets.

Stiifening wires, not shown, may be incorporated in the screen sections 6 to prevent sagging between the respective girts 14, and looped for passage of the hinge wires or rods 23, in an obvious manner.

In conclusion the details of construction of the various parts, and the proportions thereof, may all be varied as desired without departing from the spirit of my inventionas set forth in thefollowing claims.

Having thus described my invention, what laterally-spaced link chains, screen sections of perforate material having end eyes axially alignable with the chain link pivots, trans'- verse girts including an element aifording serial eyes similarly located relative to said pivots, hinge elements introduced through the contiguous screen and girteyes, and brackets rigidly supporting the girts from corresponding links of the two chains whereby the hinge elements are maintained in direct axial alignment with the link pivot axes and sagging at the union of the consecutive screen sections is prevented.

laterally-spaced link chains, conveyer sections of woven wire mesh with the longitudinal strands fashioned to provide serial selvage loops axially alignable with the chain link pivot pins, transverse girts including a woven wire sectionV with serial selvage loops similarly located relative to said pivots, hinge elements introduced through adjoining conveyer wire sections and associated girt wire section loops, and brackets rigidly supporting the girts transversely below corresponding links of the two chains whereby the hingeelements are constantly maintained in direct axial alignment with the axes of opposing chain link lpivot pins and sagging at the union of consecutive conveyer sect-ions is prevented.

4. An apron conveyer comprising a pair of laterally-spaced link chains, conveyer sections of woven wire mesh with the longitudinal strands fashioned to provide serial selvage loops axially alignable with the cha-in link pivot pins, said selvage loops being spacially arranged to permit a limited amount of lateral movement, transverse girts including a woven wire section with serial selvage loops similarly located relative to said pivots, hinge' formed selvage loops.

6. In an apron conveyer of the kind described, a girt embodying opposed rectangularly-grooved portions, and an interengaging woven wire section having serial selvage loops in direct axial alignment.

7 In an apron conveyer of the kind described, a girt comprising opposed rectangularly-grooved components with co-planar flanking iianges, a woven wire section engageable between a pair of the adjoining flanges,

said section I having serial selvage loops in direct axial alignment along its free edge, and -means for clamping said parts in permanent association.

In testimony whereof, I have hereunto signed my name at Philadelphia, Pennsylvania, this 25th day of August, 1931.

THOMAS ALLSOP.

' 3. apron conveyer comprising-a pair of f

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