Conveyor system and attachments therefor

Claim 2

A conveyor system for carrying foods and the like, comprising an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting said upper and lower support reaches, said conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond said links, support means for said conveyor, said support means including a pair of laterally spaced apart upperguide rails disposed adjaceNt to and for supporting the upper support reach of said conveyor, a plurality of attachments engageable with said roller conveyor, each of said attachments including a base and a pair of legs depending therefrom, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, said beveled trailing edge cooperating with said guide rails and with the beveled forward edge of the adjacent attachment to permit movement of said attachments between the lower and inclined support reaches of said conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, said upper guide rails contacting said base at points spaced from said support surface thereby to guide said conveyor and said attachments thereon along the upper support reach of said conveyor without contact with said support surfaces, whereby said attachments are freely movable between the lower and inclined support reaches of said conveyor while said support surfaces are maintained out of contact with any adjacent structure along the support reach of said conveyor so as to maintain said support surfaces free of contamination.

Claim 3

The conveyor system set forth in claim 1, and further including abutment structure on said base extending upwardly from said support surface to hold the supported foods on said support surface along said inclined support reach.

Claim 4

A conveyor system for carrying foods and the like comprising an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting said upper and lower support reaches, said conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond said links, support means for said conveyor, said support means including a pair of laterally spaced-apart upper guide rails disposed adjacent to and for supporting the upper support reach of said conveyor, a plurality of attachments engageable with said roller chain conveyor and each comprising a one-piece body of synthetic organic plastic resin, each of said attachments including a base and a pair of legs depending therefrom, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like along the support reach of said conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two bevel surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, said trailing edge cooperating with the beveled forward edge of the adjacent attachment to permit movement of the adjacent attachments where the bases thereof are disposed in a concave configuration, abutment structure on said base extending upwardly from said support surface to hold the supported foods on said support surface along said inclined support reach, said legs being disposed substantially normal to said base and depending therefrom and as-molded having facing surfaces disposed substantially parallel and spaced apart a distance slightly less than the length of the Associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of the associated one of said pins therein for mounting said attachment on said roller chain, said upper guide rails contacting said base at points spaced from said support surface thereby to guide said conveyor and said attachments thereon along the upper support reach of said conveyor without contact with said support surfaces, whereby said support surfaces are maintained out of contact with any adjacent structure along the upper support reach of said conveyor so as to maintain said support surfaces free of contamination.

Claim 5

A conveyor system for carrying foods and the like comprising an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting said upper and lower support reaches, said conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond said links, support means for said conveyor, said support means including a pair of laterally spaced-apart upper guide rails disposed adjacent to and for supporting the upper support reach of said conveyor, a plurality of attachments engageable with said roller chain conveyor and each comprising a one-piece body of synthetic organic plastic resin, each of said attachments including a base and a pair of legs depending therefrom, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like along the support reach of said conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two bevel surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, said trailing edge cooperating with the beveled forward edge of the adjacent attachment to permit movement of the adjacent attachments where the bases thereof are disposed in a concave configuration, abutment structure on said base extending upwardly from said support surface to hold the supported foods on said support surface along said inclined support reach, said legs being disposed substantially normal to said base and depending therefrom and as-molded having facing surfaces disposed substantially parallel and spaced apart a distance slightly less than the length of the Associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of the associated one of said pins therein for mounting said attachment on said roller chain, said upper guide rails contacting said base at points spaced from said support surface thereby to guide said conveyor and said attachments thereon along the upper support reach of said conveyor without contact with said support surfaces, whereby said support surfaces are maintained out of contact with any adjacent structure along the upper support reach of said conveyor so as to maintain said support surfaces free of contamination.

Claim 6

The conveyor system as set forth in claim 3, wherein the upper support reach includes portions movable along a rectilinear path and the forward edge of said base has swept-back ends, the swept-back ends and beveled edges of the bases of adjacent attachments cooperating to accommodate overlapping of the adjacent ends of said bases to permit movement of said conveyor laterally with respect to the rectilinear path of said portions of said upper support reach.

Claim 7

An attachment for carrying foods and the like on an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting the upper and lower support reaches, the conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising a base and a pair of legs depending therefrom, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, the beveled edges of said base cooperating with the conveyor and with the beveled edges of like adjacent attachments to facilitate movement thereof between the lower and inclined support reaches of the conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, whereby the beveled edges of the base accommodate free movement of said attachment between the lower and inclined support reaches of the conveyor.

Claim 8

An attachment for carrying foods and the like on an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting the upper and lower support reaches, the conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising a base and a pair of legs depending therefrom, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, the beveled edges of said base cooperating with the conveyor and with the beveled edges of like adjacent attachments to facilitate movement thereof between the lower and inclined support reaches of the conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, whereby the beveled edges of the base accommodate free movement of said attachment between the lower and inclined support reaches of the conveyor.

Claim 9

The attachment set forth in claim 5, and further including abutment structure on said base extending upwardly from said support surface to hold the supported foods on said support surface along said inclined support reach.

Claim 10

The conveyor system as set forth in claim 5, wherein said upstanding abutment structure consists of a parapet extending in use laterally of the associated roller chain from one end of said support surface laterally to the opposing end thereof.

Claim 11

An attachment for carrying foods and the like on an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting the upper and lower support reaches, the conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising a base and a pair of legs depending therefrom, said base having a support surface extending in use laterally of the associated roller chain for suppoRting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, the beveled edges of said base cooperating with the conveyor and with the beveled edges of like adjacent attachments to facilitate movement thereof between the lower and inclined support reaches of the conveyor, support members of limited area extending from said support surface for supporting foods and the like spaced from said support surface, the spaces between the underside of the supported object and said support surface accommodating the passage of cooling fluid therethrough to cool the supported objects during transportation thereof along the support reach of the roller chain conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, whereby the beveled edges of the base accommodate free movement of said attachment between the lower and inclined support reaches of the conveyor.

Claim 12

An attachment for carrying foods and the like on an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting the upper and lower support reaches, the conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising a base and a pair of legs depending therefrom, said base having a support surface extending in use laterally of the associated roller chain for suppoRting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, the beveled edges of said base cooperating with the conveyor and with the beveled edges of like adjacent attachments to facilitate movement thereof between the lower and inclined support reaches of the conveyor, support members of limited area extending from said support surface for supporting foods and the like spaced from said support surface, the spaces between the underside of the supported object and said support surface accommodating the passage of cooling fluid therethrough to cool the supported objects during transportation thereof along the support reach of the roller chain conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, whereby the beveled edges of the base accommodate free movement of said attachment between the lower and inclined support reaches of the conveyor.

Claim 13

The attachment as set forth in claim 8, wherein said support members comprise a plurality of ridges extending from the forward edge of said upper surface to the trailing edge thereof, whereby articles such as food and the like placed thereon are supported by the ridges at an elevated position with respect to said upper surface.

Claim 14

An attachment for carrying foods and the like on an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting the upper and lower support reaches, the conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising a base and a pair of legs depending therefrom, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, the beveled edges of said base cooperating with the conveyor and with the beveled edges of like adjacent attachments to facilitate movement thereof between the lower and inclined support reaches of the conveyor, two side guides respectively mounted on said base adjacent to the lateral ends thereof and extending upwardly therefrom with respect to said support surface for retaining foods and the like thereon, said side guides being dimensioned to prevent engagement thereof with the side guides of like adjacent attachments during movement thereof between the lower and inclined support reaches of the conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, whereby the beveleD edges and the side guides of the base accommodate free movement of said attachment between the lower and inclined support reaches of the conveyor.

Claim 15

An attachment for carrying foods and the like on an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting the upper and lower support reaches, the conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising a base and a pair of legs depending therefrom, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, the beveled edges of said base cooperating with the conveyor and with the beveled edges of like adjacent attachments to facilitate movement thereof between the lower and inclined support reaches of the conveyor, two side guides respectively mounted on said base adjacent to the lateral ends thereof and extending upwardly therefrom with respect to said support surface for retaining foods and the like thereon, said side guides being dimensioned to prevent engagement thereof with the side guides of like adjacent attachments during movement thereof between the lower and inclined support reaches of the conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, whereby the beveleD edges and the side guides of the base accommodate free movement of said attachment between the lower and inclined support reaches of the conveyor.

Claim 16

The attachment as set forth in claim 10, wherein each of said side guides consists of a wall member extending upwardly from the opposing lateral ends of said base and extending between the forward and trailing edges thereof and being substantially normal with respect thereto.

Claim 17

An attachment for carrying foods and the like on the support reaches of and for supporting upon an associated guide rail along the return reach of an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting the upper and lower support reaches, the conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising a base and a pair of legs depending therefrom and a pair of support flanges extending respectively outwardly from said legs and away from each other, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, the beveled edges of said base cooperating with the conveyor and with the beveled edges of like adjacent attachments to facilitate movement thereof between the lower and inclined support reaches of the conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, each of said support flange extending laterally outwardly from the associated leg adjacent to the lower end thereof for engagement with the associated guide rail along the return reach of the roller chain conveyor, whereby said support surface is maintained out of contact with any adjacent structure along the return reach of the conveyor so as to maintain said support surface free of contamination.

Claim 18

An attachment for carrying foods and the like on the support reaches of and for supporting upon an associated guide rail along the return reach of an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting the upper and lower support reaches, the conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising a base and a pair of legs depending therefrom and a pair of support flanges extending respectively outwardly from said legs and away from each other, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, the beveled edges of said base cooperating with the conveyor and with the beveled edges of like adjacent attachments to facilitate movement thereof between the lower and inclined support reaches of the conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, each of said support flange extending laterally outwardly from the associated leg adjacent to the lower end thereof for engagement with the associated guide rail along the return reach of the roller chain conveyor, whereby said support surface is maintained out of contact with any adjacent structure along the return reach of the conveyor so as to maintain said support surface free of contamination.

Claim 19

The attachment as set forth in claim 12, wherein the facing surfaces of said legs are essentially planar and each of said facing surfaces is continuous with the adjacent surfaces of the associated support flanges disposed away from said body, the juncture of said surfaces being arcuate along the length thereof thereby presenting a smooth guide for facilitating the engagement of the associated pin within said socket when mounting said attachment on said roller chain conveyor.

Claim 20

An attachment for carrying foods and the like on the support reach of and for supporting upon an associated guide rail along the return reach of an articulated roller chain conveyor which includes links with connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising an integral one-piece body of synthetic organic plastic resin including a base and a pair of legs depending therefrom and a pair of support flanges respectively extending outwardly therefrom and away from each other, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveleD surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, said legs being disposed substantially normal to said base and depending therefrom and as-molded having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, each of said support flanges extending laterally outwardly from the associated leg adjacent to the lower end thereof for engagement with the associated guide rail along the return reach of the roller chain conveyor, whereby to maintain said support surface out of contact with any adjacent structures and objects except the food articles to be supported thereon along both the support reach and the return reach of the roller chain conveyor.

Claim 21

An attachment for carrying foods and the like on the support reach of and for supporting upon an associated guide rail along the return reach of an articulated roller chain conveyor which includes links with connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising an integral one-piece body of synthetic organic plastic resin including a base and a pair of legs depending therefrom and a pair of support flanges respectively extending outwardly therefrom and away from each other, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveleD surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, said legs being disposed substantially normal to said base and depending therefrom and as-molded having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, each of said support flanges extending laterally outwardly from the associated leg adjacent to the lower end thereof for engagement with the associated guide rail along the return reach of the roller chain conveyor, whereby to maintain said support surface out of contact with any adjacent structures and objects except the food articles to be supported thereon along both the support reach and the return reach of the roller chain conveyor.

Claim 22

An attachment for carrying foods and the like on the support reaches of and for supporting upon an associated guide rail along the return reach of an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting the upper and lower support reaches, the conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising a base and a pair of legs depending therefrom and a pair of support flanges extending respectively outwardly from said legs and away from each other, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, the beveled edges of said base cooperating with the conveyor and with the beveled edges of like adjacent attachments to facilitate movement thereof between the lower and inclined support reaches of the conveyor, support members of limited area extending from said support surface for supporting foods and the like spaced from said support surface, the spaces between the underside of the supported object and said support surface accommodating the passage of cooling fluid therethrough to cool the supported objects during transportation thereof along the support reach of the roller chain conveyor, two side guides respectively mounted on said base adjacent to the lateral ends thereof and extending upwardly therefrom with respect to said support surface for retaining foods and the like thereon, said side guides being dimensioned to prevent engagement thereof with the side guides of like adjacent attachments during movement thereof between the lower and inclined support reaches of the conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, each of said support flanges extending laterally outwardly from the associated leg adjacent to the lower end thereof for engagement with the associated guide rail along the return reach of the roller chain conveyor, whereby said support surface is maintained out of contact with any adjacent structure along thE return reach of the conveyor so as to maintain said support surface free of contamination.

Claim 23

An attachment for carrying foods and the like on the support reaches of and for supporting upon an associated guide rail along the return reach of an articulated roller chain conveyor including an upper support reach and a lower support reach and an inclined support reach interconnecting the upper and lower support reaches, the conveyor having a plurality of links joined together by connecting pins having the outer ends thereof protruding laterally beyond the links, said attachment comprising a base and a pair of legs depending therefrom and a pair of support flanges extending respectively outwardly from said legs and away from each other, said base having a support surface extending in use laterally of the associated roller chain for supporting foods and the like thereon along the support reach of the roller chain conveyor, the forward and trailing edges of said base being beveled along the length thereof, the beveled trailing edge of said base including two beveled surfaces respectively extending from said support surface and the opposite surface of said base and intersecting approximately midway therebetween, the beveled edges of said base cooperating with the conveyor and with the beveled edges of like adjacent attachments to facilitate movement thereof between the lower and inclined support reaches of the conveyor, support members of limited area extending from said support surface for supporting foods and the like spaced from said support surface, the spaces between the underside of the supported object and said support surface accommodating the passage of cooling fluid therethrough to cool the supported objects during transportation thereof along the support reach of the roller chain conveyor, two side guides respectively mounted on said base adjacent to the lateral ends thereof and extending upwardly therefrom with respect to said support surface for retaining foods and the like thereon, said side guides being dimensioned to prevent engagement thereof with the side guides of like adjacent attachments during movement thereof between the lower and inclined support reaches of the conveyor, said legs being disposed substantially normal to said base and depending therefrom and having facing surfaces disposed essentially parallel and spaced-apart a distance slightly less than the length of the associated connecting pins, each of said legs having a socket therein adjacent to the lower end thereof and positioned a predetermined distance from said support surface, said sockets respectively receiving the outer ends of said pins therein for mounting said attachment on the associated roller chain, each of said support flanges extending laterally outwardly from the associated leg adjacent to the lower end thereof for engagement with the associated guide rail along the return reach of the roller chain conveyor, whereby said support surface is maintained out of contact with any adjacent structure along thE return reach of the conveyor so as to maintain said support surface free of contamination.