US2397584A - Conveyer belt guard edge - Google Patents

Description

Y H. AMBRUSON CONVEYER BELT GUARD EDGE April 2, 1946.

Filed Feb. 1.' 1943 wnn,

f n a Inf Patented Apr. 2, 1946 UNITED STATES PATENT OFFICE CONVEYER BELT GUARD EDGE Henry Ambruson, Worcester, Mass., assignor to Wickwire Spencer Steel Company, New York, N. Y., a corporation of Delaware Application February 1, 1943, Serial No. 474,268

13 Claims. (Cl. ISS-201) This invention relates to wire conveyers having one or more anges thereon and particularly to constructions whereby the flange is capable of greater elongation than the remainder of the conveyer so that on passage of the conveyer about an arcuate surface the flange will not be distorted or impose undesirable strains upon the conveyer.

It has been recognized heretofore that when a flanged conveyer passes about an arcuate surface the arc through which the flange travels has a greater radius than the arc through which the body of the conveyer travels and that some provision should therefore be made to avoid the application of strains due to the tension on the periphery of the ange or the cramping of the central portion of the conveyer. In order to overcome this difliculty in flanged wire conveyers it has been suggested heretofore that certain of the wires in the ange be omitted to permit relative movement of the remaining wires in order that the flange may be elongated as the conveyer passes about an arcuate surface. However, if wires are omitted from the flange, `the strength -of the ange is reduced, and there is a tendency for the flange to bend outward when the conveyer is heavily loaded and material presses outward against the flange. Under these circumstances some of the material may fall from the COnVeYeI'..

In accordance with the present invention these objections to constructions of the prior art are overcome and` means provided whereby the ange of the conveyer retains all of the strength of the central portion of the conveyer, but the wires forming the flange are capable of such relative movement as to permit elongation ofthe flange as the conveyer passes about an arcuate surface.

These advantages maybe attained in various ways and by the use of numerous forms of interlaced wires. However, in general, constructions embodying the present invention include one or more transversely extending wires having end portions disposed in the flanges which permit greater relative movement of the wires in the flange than in the body of the conveyer. In the preferred forms of the invention shown in the drawing and hereinafter described, the end portions of the wires have undulations or convolutions therein which are larger than those of the central portion of the wires.

One of the objects of the present invention is to provide a Wire conveyer with flanges possessing the desired strength but capable of elongation to avoid the application of strains tothe flange or conveyer when the conveyer passes about an arcuate surface.

Another object of the invention is to provide a wire conveyer with a flange and having transversely extending wires provided with end portions disposed in the flange and formed to permit greater relative movement of the wires in the ange than in the body of the conveyer.

A further object of the inventionv is to provide a flanged wire conveyer-with transversely extending wires having end portions thereof disposed in the flange, the convolutions in the end portions of the wires being deeper or larger than those in the portions of the wires located in the body of the conveyer. v

These and other objects and features of the invention will appear from the following description thereof in which reference is made to the gures of the accompanying drawing.

In the drawing:

Fig. 1 is a plan view of a portion of a conveyer with the ange forming portion thereof turned outward to show the difference in construction of the body and flange.

Fig. 2 is a plan View ofone of the connecting wires embodied in the construction of Fig. 1.

Fig. 3 is aver-tical sectional view of the finished conveyer showing the relation of the flanges to the body of the conveyer in the finished construction.

Fig. 4 is a vertical sectional view of the conveyer anda pulley about which it passes.

Fig. 5 is a plan view of a portion of 'an alternative form of connecting wire embodying the present invention.

Fig. 6 is a plan view of a portion of a further alternative form of connecting wire embodying the present invention.

Fig. 7 is a plan view of a portion of an alternative form of coil adapted for use in conveyers, embodying the present invention.

Fig. 8 is a plan View of a portion of a further alternative form of coil adapted for use in conveyers embodying the present invention, and

Figure 9 is a plan view of a` portion of another embodiment of the invention.

In that form of the invention shown in Figs. 1 to 4 of the drawing, the conveyer has a central portion or body 2 formed of wires interlaced and arranged as desired, and is provided with flanges 4 extending along one or both edges vof thecentral portion of the conveyer. The particularstyle of weave or the arrangement of the'wires and the manner in which they are interlaced in forming the belt is capable of Wide variation, but for purposes of simplicity in illustrating the invention, the conveyer is shown as formed of a plurality of transversely extending coils E, 8, I and I2, the convolutions of which are hingedly connected by means of transversely extending connecting Wires I4, I6, I8 and 20. The coiled Wires 6, 8, I0 and I2 are uniform throughout the length thereof and extfend"to"{th central portion of the convey'er, shown at theE right of the dotted line A-A in Fig. l to the edge 22 of the flange forming portion 4 of the conveyer shown at the left of line A--A in Fig. l. While the coilsE,.,8, I0 and, I2 are similar, the coils 6 and I0 are"righthand coils, Whereas the coils 8 and I2fareV .left'landy coils, as is usual in wire conveyer" construction. v The connecting Wires I4, I6, I 8 and 2D which l hingedly connect the coilsliave central portions 24, on the right of the line A-A in Fig. 1, that are provided with undulations orconvolution's'"` .Qfi 913e. Size. endend ,ppltoestf in the-flange .femme Portion fof-the .Gom/.eist mated parte@ left of the une A A, which have-deeper but um- .,ffermlvpaced .undulations ,Q11 convolutions Bt. lfhewend, portions of the l connecting, WiresY` and the .end portions ofthe coilsuare.thusxdisposedat .thegdgesf gepoetst/,Gr.andeitef fgrmine the ,enye'yerlthedges araturned upward tot form the flanges.. 4. .Mille oepositedees pf the .Central .portion 2of. the @ni/ever. `,The ,undulating 0r, onvolutions 26 and 30 in -theconllectnewrs may lie ina single plane 01' theymay, .ifpreferrea .bearraneed .in the. form ofgasrziral.orihelx ,For this reason such un- .dulations vin,thejconnectitlawiresv I4, IS, I8 and and the turns in the coils, ,6, ,8,., IUand I2Vare allreielzreiA tonelfeafter inthe specication and claims, as. ,ffconvolutions in theresnective Wires.

'.When ,tension appliedA to the lconvesler the uniform convolutionsinlhe Central portion of. the

coils 6, 8, I0 and I2 are drawnintodirecticontact with the uniform, convolutons.7.,2,6 in the central .i portion'. of the corinectinawires la, it; liandzt. lHowever; the convolutionsv of. the coils, located in the flanges of the conveyer a"re,notdrawninto.v

, :direct: contact with thelarger convolutions of the endLpfortonsVv of. theconnectingwires in the flanges 43j. 'llfieportionsofthe.coils and connect-` ingyyviresilocatedin'the ,flange's are therefore spaced i as; shown at.. 3 I. in .,Figs. 1, and :4 and .are capable of relative movement to permit elongation of, the nange aslthe conveyer passesatout an arcuatesurfacejisuch as the 'puglley'l32 shown AiIL'iigure.4.'Y

.T hec'onvolutons 30 in the end portionl of the connecting Wires shown in Figs. 1a'nd.2.are of progressvelyifcreasing size ordepth tovvardthe "jextentiesf of"the"v`viresiand. the'e'd'ges 22 ofthe flanges but are spaced as inithe'ce'n'tral portion 24 of the Wire'. The/portions of the coils located adjacent theedges' of"theiflanges therefore are capable of greater relative'inovement than. those portions, located near the' centralportior orfb'ody 2" of `*the 'conveyer to permit the conveyerto' pass about a pulley' or otherl arcuate surf ace rof relative- 1y small "diameter While providing substantially uniform support therefor: Asth'limit 'o'ff flexing is'approach'edl tall'. ofthe convolutions'io'f'the 'coils jini the v.flanges :move together into"completev e'rigagemert Wi'tlr Y'convolutions of the" connecting -WiresA a'n'd Vnoone portionA` of Ltlie flange will 'be subjected to ,a""'greatei-" or materially7 v.different strainthananother.""`

".Iiizthe alternative construction shown inFig. 5

',tlieipo'rtioriv of the connecting Wire which' islo- )n f in'gfwir'e is perfectly straight rh'asconvolutions of negligible: size therein, Whereas the end portions 40 of the Wire are formed with convolu- "tions of progressively increasing size toward the ,extremen there@ It Willv be apparent that either of the forms of connecting 'wir shown in Figs. 5 and 6 may be 'usefdi'n place of, the connecting wire of Fig. 2 to producea flanged wire conveyer in which the VWires in the `flanges are capable of sufficient relative movement to permit elongation of the flange as the conveyer passes over an arcuate surface or overahpulley.

In thafurzther alternativafprins, zof the invenf tion .slides/ii` inlli'gs. 7 and., 8, .the coils themselves ,are non-uniform lin Aconstructi on in that Vthe porbdyrentral, ,portion ,0f the.. contester 4.have conroliltionspffone ,diametelutwhexeas the .end .p0rtions of the coils are provided with convolutions of larger, diameter. 'I'hesecoils maybe used in Y combination `With 4co nventi o'nal. conneotingxlwires Awhich are @itherzstraieht orfiformedwithnnifotm sonvolutions throughout the :,.leneth thereof.

However, indesird, theeoilst Fiss-37. and may be usedyvith the conne, ina wireS-.of.fFies..f2,;5 ,cr

6, to provide lfor still ,further relativeinovement .of thewires xwhich make, up..tt1.e1ar1gS0f.=-the onveyerand .to enable tlieconveyer.tobepassed aboutanulley of. Yerv.sma11,:diameter.

of :uniform -,svze, ,lout are larger than i the conf YQlutionsM.

- i In,A that form Aof theinvention. shown.. in eEe of the drawing the connecting Wires 5,0 are straight; and,extend through thecentraLportion coils. Separately formed coils of wire Fu-.having `.larger oo nyolutions .hingedlv L.Connected fbygi'the straight .Wires 570 form. the .marginali portion. or

`flange of the,"c onveyer.' lThe ends of thellwires 56 are Weldedl to thelargerco-ilsj along Atheline A--A before VVturningup v...the edge .to .form the niange. .'The. flange is thus connected. to. thecentral portion ofthe conveyer ..adjacert.theputer ends'of the Wires 1.56 .and adjacent the ...inner ends 4ofthe Wires.

`Withv this construction the .connecting .Wires V5.0 .are located adjacent'.the` apices .of' the .coils ment about the Wires `50 but are held against relative movementlongitudinally of the conveyer.

Generally,the-.conveyer is formed as a continuous flatconstruction as shown in Fig. 1 and thereafter the marginal flanges are formed by turning the edges .thereof upward along the line A-A to provide the finished flanged conveyer.

lIt' is preferable to Weld` the connecting Wires to the coils along :line-.A-A to securely bond the Wires together atx-'the opposite edges of the conveyer body and at the points at the base of the flanges about Which the Wires are bent to form the flanges. f

While certain preferred forms of wire lconveyers embodying the present invention have .been shown inthe drawing and described above,

it Will be apparent that the type of Weave or arrangementand relative positions of the wires in the conveyer and the shape and form of the connecting Wires and coils employed are capable of many changes and modifications Without departing fromthe spirit andr scope of the invention.` It should, therefore, be understood that the particular embodiments thereof specifically referred Yto and shown in the drawing are intended to; beillustrative of the invention and arenot-intended yto limit the following claims. vIclaimr-` 1. In a Wire conveyer having flanges adjacent the opposite edges thereof and embodying coils of wire hingedly connected by transversely extending connecting vvires, said connecting wires having opposite end portions disposed in said flanges and formed with convolutions of larger size in said opposite end portions which permit greater relative movement of the coils of Wire in the flanges than in the central portions of the conveyer, whereby movement of the conveyer about an arcuate surface will permit greater elongation of the flanges than of the central portion of the conveyer.

2. In a Wire conveyer having flanges adjacent the opposite edges thereof and embodying coils of Wire hingedly connected by transversely extending connecting Wires, said connecting wires having opposite end portions disposed in said flanges and formed with convolutions of progressively increasing size toward the extremities thereof to permit greater relative movement of the coils of Wire in the yflanges than in the central portion of the conveyer.

3. In a Wire conveyer having flanges adjacent the opposite edges thereof and embodying coils of Wire hingedly connected by transversely extending connecting wires, said connecting wires having opposite end portions disposed in said flanges and formed with convolutions of uniformly greater size than the central portion of the Wire to permit greater relative movement of the coils of Wire in the flanges than in the central portion of the conveyer.

4. A Wire conveyer having flanges adjacent the opposite edges thereof and embodying coils of wire hingedly connected by transversely extending connecting Wires, the central portion of the connecting wires in the conveyer having convolutions therein of one size and the portions of the connecting wires located in the flanges of the conveyer having convolutions therein of a larger size.

5. A wire conveyer having flanges adjacent the opposite edges thereof and embodying coils of wire hingedly connected by transversely extend- Ving connecting wir'esj the central portion ofthe connecting wires located 'in the flanges of the conveyer having convolutions therein increasing progressively in size from the' central portion of the conveyer toward the edges of the flanges.

6. In a wire conveyer' having flanges at the opposite edges thereof and embodying coils of wire hingedly connected by transversely extending connecting Wires, said connecting Wires having opposite end portions Adisposed in said flangesgsaid connecting Wire having convolutions throughout the length thereof, the convolutions in that portion of the connecting Wire located in said flang'esbeingv larger than the convolutions adjacentthe center ofthe Wire whereby the flanges of the conveyer are capable of greater elongation than the center of the conveyer.

7. In a Wire conveyer having flanges adjacent the opposite edges thereof and embodying coils of Wire hingedly connected by transversely extending connecting Wires, said connecting wires having opposite end portions disposed in said flanges, and formed with uniform convolutions adjacent the central portion thereof and'convolutions of larger. size in that-portion of the connecting wires located in the flanges to permit greater relative movement of the Wires in the flanges than in thecentral'portion of the conveyer.

8. In a wire conveyer having flanges adjacent the opposite edgesthereof and embodying coils of wire hingedly connected' by transversely. extending connecting wires, said connecting Wires having opposite end portions disposed in said flanges and formed with uniform convolutions adjacent the central portion of the connecting wires and convolutions of progressively increasing size in that portion thereof located in the flanges of the conveyer to permit greater relative movement of the Wires in the flanges than in the central portion of the conveyer.

9. A wire conveyer having a central portion and having flanges adjacent the opposite edges thereof, said conveyer comprising coils of Wire extending transversely of the conveyer and provided with end portions disposed in said flanges, and connecting wires extending across the conveyer and hingedly connecting said coils of wire, said connecting wires having end portions vdisposed in veyer as the conveyer passes about an arcuate surface. 10. A Wire conveyer having a central portion and having flanges adjacent the opposite edges of the central portion, said conveyer comprising coils of wire extending transversely of the conveyer and provided with opposite end portions disposed in said flanges, and connecting wires extending transversely across the conveyer and hingedly Connecting said coils, said connecting wires having portions located in the central portion of'the conveyer and provided with uniform convolutions of one size and having end portions located in said flanges and provided with convolutions of larger size therein to permit greater relative movement of the wires in the flanges than in the central portion of the conveyer Whereby movement of the conveyer about an arcuate surface will permit greater elongation of the flanges than of the central portion of the conveyer.

Images