US3206005A - Endless belt for dishwashing machines and having snap-on links - Google Patents

Endless belt for dishwashing machines and having snap-on links Download PDF

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US3206005A
US3206005A US264617A US26461763A US3206005A US 3206005 A US3206005 A US 3206005A US 264617 A US264617 A US 264617A US 26461763 A US26461763 A US 26461763A US 3206005 A US3206005 A US 3206005A
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link
rod
belt
links
socket
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Expired - Lifetime
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US264617A
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Homer F Lyman
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Universal Dishwashing Machinery Co
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Universal Dishwashing Machinery Co
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/24—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors
    • A47L15/247—Details specific to conveyor-type machines, e.g. curtains
    • A47L15/248—Details specific to conveyor-type machines, e.g. curtains relating to the conveyors

Definitions

  • This invention relates to endless belts used in commercial dishwashing machines.
  • a belt'having snap-on links of novel design is contemplated. This design permits easier assembly, facilitates link replacement, integrates .belt fabric and offers versatile belt management.
  • Links according to the present teaching are each provided with an end socket and a side socket.
  • the end socket is first mounted in rotatable engagement on one rod.
  • the link is then turned about the rod and the bifurcated jaws defining the side socket are deformed to snap onto a second rod.
  • link removal is accomplished by the converse of the foregoing operation, so this design is especially valuable for link replacement.
  • Another advantage of this invention is that sockets disposed at right angles to each other present an opportunity for integrating the belt into a relatively uniform fabric. End sockets and side sockets are alternated along each rod to integrate the belt fabric. Because of this unified fabric, awkward design conditions, such as revolving the belt through 180 turns with space at a premium, become less critical. In making a turn, some end sockets are always positioned to resist forces which might otherwise pull out rods from side sockets. Improved turning permits smaller turning radii than were heretofore possible with comparable snap-on links. Thus a more compact dishwasher is achieved.
  • a further advantage of this unified belt fabric is that the effort required to move the belt is made more uniform. Accordingly peak drive requirements are leveled so that the motor size may be reduced in some cases.
  • rollers are here arranged to project beyond the upper ends of plastic pegs to protect those pegs from impact.
  • FIGURE 1 is a side View, partly broken away, showing a dishwashing machine having an endless belt embodying the present invention.
  • FIGURES 2 and 3 are respectively a fragmented top view and a fragmented side section depicting a portion of the belt.
  • FIGURE 3 is taken along line 3-3 of FIG- URE 2 to illustrate the alternating arrangement of end sockets and side sockets as well as the lateral projection of the sockets.
  • FIGURES 4 and 5 illustrates the insertion of a link.
  • FIGURE 4 is a side elevation of a link showing an end socket fitted onto a rod.
  • FIGURE 5 shows the side socket after its jaws have been deformed to snap onto the next rod.
  • FIGURE 5 also depicts rollers mounted at the tops of the pegs.
  • FIGURES 6 and 7 are sections taken along line 66 and 7-7 respectively of FIGURE 5.
  • Belt 11 describes an endless course having upper run 12 and lower run 13.
  • the dishwashing process is performed along upper run 12.
  • Dishes 14 are fed onto belt 11 in feed zone 16.
  • Belt 11 conveys the dishes through housing 17 wherein they are washed by means of spray nozzles 18 in a manner well known.
  • Belt 11 then moves the dishes to unloadingg zone 19.
  • An automatic safety switch is generally provided to stop the belt in the event there is a failure to remove dishes therefrom.
  • Belt 11 is recycled to feed zone 16 via lower run 13.
  • the belt is disposed between side drive chains 21.
  • Rods 22 are generally made of stainless steel and are mounted transversely of the endless course followed by the belt. Rods 22 are uniformly spaced from each other to define successive pairs of adjacent rods.
  • Each rod is connected to drive chains 21 and is supported by wheels 23 which ride on suitable tracks.
  • Belt 11 passes over sprocket wheels 24 between upper run 12 and lower run 13.
  • drive means are operatively connected with one of the sprocket wheels 24 by means of chain transmission 26.
  • Links 27 are seen in FIGURE 3 to be mounted between rods 22 to support dishes and similar articles in position for washing or other operations.
  • Links 27 are generally formed of non-corrosive material. Virgin zytel is preferred. These links move clockwise in the shown embodiment and are generally U-shaped with leading pegs 28 intermediate portions 29 and trailing pegs 31. Through upper run 12 pockets 32 open upward. Pegs 28 and 31 define ridges 33 projecting into pockets 32 to engage the edges of dishes disposed therein.
  • Link 27 defines end socket 34. End bifurcated jaws 36 embrace first rod 22A in rotatable engagement within end socket 3 4. It is not mandatory that the end sockets 34 be of the snap-on variety, although snap-on sockets are preferred. Link 27 also defines side socket 37. Side bifurcated jaws 38 are elastically deformable between an open condition and a normal condition. In the open condition, side bifurcated jaws 38 are spread apart (generally by pressing them onto second rod 22B) so that side socket 37 is sufiiciently large to pass second rod 22B.
  • Link 27 is rotatable about first rod 22A to receive second rod 22B in side socket 37.
  • second rod 22B is within side socket 37, the deforming force on side bifurcated jaws 38 is relieved and jaws 38 return elastically to their normal condition with side socket 37 closed suificiently to retain second rod 22B in rotatable engagement therein.
  • end sockets 34 alternate with side sockets 37 as seen from FIGURE 2 viewed with FIGURE 3. Further each link 27 has its end socket 34 offset transversely from its side socket 37. In the shown arrangement, end sockets are all mounted toward the right and the offset side sockets 37 are snapped on with a downward thrust. Along each rod 22 rightward opening trailing links alternate with downward opening leading links. 'It should be borne in mind that end opening sockets can also alternate rightward and left- Ward and that side opening sockets can alternate top and bottom.
  • rollers 39' project past upper ends 41 of pegs 128 and 311 to protect these pegs. Rollers 39 are mounted on upper rods 42 which traverse openings 43 defined by leading pegs 28 and trailing pegs 31 respectively.
  • a lbelt describing an endless course having a direction of travel including a first rod and a second rod both disposed transversely relative the course and spaced from each other, at least one elongated link having a longitudinal axis spanning the rods, the link also having opposed ends and opposed inner and outer sides, the link defining an end socket the opening of which is facing longitudinally with the link axis fashioned to receive the first rod in rotatable engagement therein, the link defining .a side socket facing laterally relative the link axis and on the link inner side, the link side socket elastically deformable between an open condition and a normal condition, in the open condition the side sockets sufiicien-tly large to pass the second rod, the link rotatable about the first rod to receive the second rod in the side socket, in the normal condition the side socket closed sufliciently to retain the second rod in rotatable engagemen t therein, the link being oriented relative the course so that the end socket faces in said direction of travel.
  • the belt of claim '1 with the link including a leading peg and a trailing peg projecting outward from the course and from the link outer side and spaced from each other by an intermediate portion, the pegs and the intermediate port-ion defining a U-shaped pocket therebetween.
  • a belt for a dishwashing machine and describing an I endless course having a direction of travel including a plurality of rods disposed transversely relative the course and spaced therealong, a plurality of elongated side-by-side links having longitudinal axes spanning between adjacent rods, the links also having opposed ends and opposed inner and out-er sides, each of the links defining an end socket, the opening of which is facing longitudinally with the link axis adapted to rotatably engage a rod and a side socket facing laterally relative the link axis and on the link inner side also adapted to rotatably engage a rod, alternate links of said side-by-side links hav- 1 ing end sockets engaging one of said adjacent rods and side sockets engaging the other of said adjacent rods, the
  • each of the link side sockets elastically deformable between an open condition and a normal condition, in the open condition each of the side sockets sufliciently large to pass said rods, in the normal condition the side socket being sufl'lciently small to retain the rods in rotatable engagement therein, rotatable engagement of the end sockets permitting pivoting of the links so that the side sockets engage a rod, the links being oriented relative the course so that the end sockets face in said direction of travel.
  • each of the links including a leading peg and a trailing peg projecting outward from the course and from the link outer side and spaced from each other by an intermediate portion, the pegs and the intermediate portion of each link defining a U-shaped pocket the-rebetween and suitable for receiving dishes disposed endwise therein.
  • the belt of claim 4 with the endless course including an upper horizontal run and a lower horizontal run, the pegs projecting upward during the upper run so that the pockets open upward, at least one of the pegs defining at least one ridge projecting into a pocket and arranged to engage the edge of a dish disposed therein.

Description

Se t. 14, 1965 H. F. LYMAN 3,205,005
ENDLESS BELT FOR DISHWASHING MACHINES AND HAVING SNAP-ON LINKS Filed March 12, 1963 5 Sheets-Sheet 1 INVENTOR. H D MER F. LYMAN MQMM ATTEIRNEY H- F. LYMAN Sept. 14, 1965 ENDLESS BELT FOR DISHWASHING MACHINES AND HAVING SNAP-ON LINKS 3 Sheets-Sheet 2 Filed March 12 INVENTOR. H El M E R F. LY MAN ATTDRNEY Se t. 14, 1965 H. F. LYMAN 3,206,005
ENDLESS BELT FOR DISHWASHING MACHINES AND HAVING SNAP-ON LINKS Filed March 12, 1963 3 Sheets-Sheet 3 g 7 INVENTOR.
HUMER F. LYMAN ATTORNEY United States Patent This invention relates to endless belts used in commercial dishwashing machines. A belt'having snap-on links of novel design is contemplated. This design permits easier assembly, facilitates link replacement, integrates .belt fabric and offers versatile belt management.
As in prior belt arrangements, cylindrical rods are disposed transversely relative the course of the belt. Links are rotatably connected to both a leading and a trailing rod so that the belt can be turned in completing its endless course. Socket-on-rod joints provide rotatable connection of links to rods.
Links according to the present teaching are each provided with an end socket and a side socket. To install a link, the end socket is first mounted in rotatable engagement on one rod. The link is then turned about the rod and the bifurcated jaws defining the side socket are deformed to snap onto a second rod. By this arrangement the force required to deform plastic links can be provided by hand. Of course link removal is accomplished by the converse of the foregoing operation, so this design is especially valuable for link replacement.
Another advantage of this invention is that sockets disposed at right angles to each other present an opportunity for integrating the belt into a relatively uniform fabric. End sockets and side sockets are alternated along each rod to integrate the belt fabric. Because of this unified fabric, awkward design conditions, such as revolving the belt through 180 turns with space at a premium, become less critical. In making a turn, some end sockets are always positioned to resist forces which might otherwise pull out rods from side sockets. Improved turning permits smaller turning radii than were heretofore possible with comparable snap-on links. Thus a more compact dishwasher is achieved.
A further advantage of this unified belt fabric is that the effort required to move the belt is made more uniform. Accordingly peak drive requirements are leveled so that the motor size may be reduced in some cases.
With pots and pans and low-skilled help, impact loads become inevitable. Dishwashing machines must be ready for hard use. Toward this objective rollers are here arranged to project beyond the upper ends of plastic pegs to protect those pegs from impact.
These and other features will appear more fully from the acompanying drawings wherein:
FIGURE 1 is a side View, partly broken away, showing a dishwashing machine having an endless belt embodying the present invention.
FIGURES 2 and 3 are respectively a fragmented top view and a fragmented side section depicting a portion of the belt. FIGURE 3 is taken along line 3-3 of FIG- URE 2 to illustrate the alternating arrangement of end sockets and side sockets as well as the lateral projection of the sockets.
FIGURES 4 and 5 illustrates the insertion of a link. FIGURE 4 is a side elevation of a link showing an end socket fitted onto a rod. FIGURE 5 shows the side socket after its jaws have been deformed to snap onto the next rod. FIGURE 5 also depicts rollers mounted at the tops of the pegs.
FIGURES 6 and 7 are sections taken along line 66 and 7-7 respectively of FIGURE 5.
In its broad aspects the shown dishwasher is familiar to industry. Belt 11 describes an endless course having upper run 12 and lower run 13. The dishwashing process is performed along upper run 12. Dishes 14 are fed onto belt 11 in feed zone 16. Belt 11 conveys the dishes through housing 17 wherein they are washed by means of spray nozzles 18 in a manner well known. Belt 11 then moves the dishes to unloadingg zone 19. An automatic safety switch is generally provided to stop the belt in the event there is a failure to remove dishes therefrom. Belt 11 is recycled to feed zone 16 via lower run 13.
As shown in FIGURE 2, the belt is disposed between side drive chains 21. Rods 22 are generally made of stainless steel and are mounted transversely of the endless course followed by the belt. Rods 22 are uniformly spaced from each other to define successive pairs of adjacent rods. Each rod is connected to drive chains 21 and is supported by wheels 23 which ride on suitable tracks. Belt 11 passes over sprocket wheels 24 between upper run 12 and lower run 13. As shown in FIGURE 1, drive means are operatively connected with one of the sprocket wheels 24 by means of chain transmission 26.
Links 27 are seen in FIGURE 3 to be mounted between rods 22 to support dishes and similar articles in position for washing or other operations. Links 27 are generally formed of non-corrosive material. Virgin zytel is preferred. These links move clockwise in the shown embodiment and are generally U-shaped with leading pegs 28 intermediate portions 29 and trailing pegs 31. Through upper run 12 pockets 32 open upward. Pegs 28 and 31 define ridges 33 projecting into pockets 32 to engage the edges of dishes disposed therein.
The mounting of links 27 between a first rod 22A and a second rod 22B of a pair is best seen from FIGURES 4 and 5. Link 27 defines end socket 34. End bifurcated jaws 36 embrace first rod 22A in rotatable engagement within end socket 3 4. It is not mandatory that the end sockets 34 be of the snap-on variety, although snap-on sockets are preferred. Link 27 also defines side socket 37. Side bifurcated jaws 38 are elastically deformable between an open condition and a normal condition. In the open condition, side bifurcated jaws 38 are spread apart (generally by pressing them onto second rod 22B) so that side socket 37 is sufiiciently large to pass second rod 22B. Link 27 is rotatable about first rod 22A to receive second rod 22B in side socket 37. When second rod 22B is within side socket 37, the deforming force on side bifurcated jaws 38 is relieved and jaws 38 return elastically to their normal condition with side socket 37 closed suificiently to retain second rod 22B in rotatable engagement therein.
To improve organization of the belt fabric, end sockets 34 alternate with side sockets 37 as seen from FIGURE 2 viewed with FIGURE 3. Further each link 27 has its end socket 34 offset transversely from its side socket 37. In the shown arrangement, end sockets are all mounted toward the right and the offset side sockets 37 are snapped on with a downward thrust. Along each rod 22 rightward opening trailing links alternate with downward opening leading links. 'It should be borne in mind that end opening sockets can also alternate rightward and left- Ward and that side opening sockets can alternate top and bottom.
As best seen in FIGURE 5, rollers 39' project past upper ends 41 of pegs 128 and 311 to protect these pegs. Rollers 39 are mounted on upper rods 42 which traverse openings 43 defined by leading pegs 28 and trailing pegs 31 respectively.
It will be apparent that details may be changed without departing from the main spirit of invention defined by the claims.
What is claimed is:
31. A lbelt describing an endless course having a direction of travel, the belt including a first rod and a second rod both disposed transversely relative the course and spaced from each other, at least one elongated link having a longitudinal axis spanning the rods, the link also having opposed ends and opposed inner and outer sides, the link defining an end socket the opening of which is facing longitudinally with the link axis fashioned to receive the first rod in rotatable engagement therein, the link defining .a side socket facing laterally relative the link axis and on the link inner side, the link side socket elastically deformable between an open condition and a normal condition, in the open condition the side sockets sufiicien-tly large to pass the second rod, the link rotatable about the first rod to receive the second rod in the side socket, in the normal condition the side socket closed sufliciently to retain the second rod in rotatable engagemen t therein, the link being oriented relative the course so that the end socket faces in said direction of travel.
2. The belt of claim '1 with the link including a leading peg and a trailing peg projecting outward from the course and from the link outer side and spaced from each other by an intermediate portion, the pegs and the intermediate port-ion defining a U-shaped pocket therebetween.
3. A belt for a dishwashing machine and describing an I endless course having a direction of travel, the :belt including a plurality of rods disposed transversely relative the course and spaced therealong, a plurality of elongated side-by-side links having longitudinal axes spanning between adjacent rods, the links also having opposed ends and opposed inner and out-er sides, each of the links defining an end socket, the opening of which is facing longitudinally with the link axis adapted to rotatably engage a rod and a side socket facing laterally relative the link axis and on the link inner side also adapted to rotatably engage a rod, alternate links of said side-by-side links hav- 1 ing end sockets engaging one of said adjacent rods and side sockets engaging the other of said adjacent rods, the
remaining links being oppositely oriented so that end sockets and side sockets alternate along each of the rods, each of the link side sockets elastically deformable between an open condition and a normal condition, in the open condition each of the side sockets sufliciently large to pass said rods, in the normal condition the side socket being sufl'lciently small to retain the rods in rotatable engagement therein, rotatable engagement of the end sockets permitting pivoting of the links so that the side sockets engage a rod, the links being oriented relative the course so that the end sockets face in said direction of travel.
4. The belt of claim 3 with each of the links including a leading peg and a trailing peg projecting outward from the course and from the link outer side and spaced from each other by an intermediate portion, the pegs and the intermediate portion of each link defining a U-shaped pocket the-rebetween and suitable for receiving dishes disposed endwise therein.
5. The belt of claim 4 with the endless course including an upper horizontal run and a lower horizontal run, the pegs projecting upward during the upper run so that the pockets open upward, at least one of the pegs defining at least one ridge projecting into a pocket and arranged to engage the edge of a dish disposed therein.
:6. The belt of claim 5 with each of the :links disposed along the course, each link having its end socket offset transversely in the course from its side socket.
References Cited by the Examiner UNITED STATES PATENTS 1,274,385- 8/18' Col-burn 198-195 X 2,631,465 3/53 Cordis l98-l=89 X 2,840,227 6/ 58 Federiighi et al 198-134 X 3,044,601 7/62 Ellis 198---131 SAMUEL F. COLEMAN, Primary Examiner.

Claims (1)

1. A BELT DESCRIBING AN ENDLESS COURSE HAVING A DIRECTION OF TRAVEL, THE BELT INCLUDING A FIRST ROD AND A SECOND ROD BOTH DISPOSED TRANSVERSELY RELATIVE THE COURSE AND SPACED FROM EACH OTHER, AT LEAST ONE ELONGATED LINK HAVING A LONGITUDINAL AXIS SPANNING THE RODS, THE LINK ALSO HAVING OPPOSED ENDS AND OPPOSED INNER AND OUTERE SIDES, THE LINK DEFINING AN END SOCKET THE OPENING OF WHICH IS FACING LONGITUDINALLY WITH THE LINK AXIS FASHIONED TO RECEIVE THE FIRST ROD IN ROTATABLE ENGAGEMENT THEREIN, THE LINK DEFINING A SIDE SOCKET FACING LATERALLY RELATIVE THE LINK AXIS AND ON THE LINK INNER SIDE, THE LINK SIDE SOCKET ELASTI-
US264617A 1963-03-12 1963-03-12 Endless belt for dishwashing machines and having snap-on links Expired - Lifetime US3206005A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267902A (en) * 1963-07-15 1966-08-23 George A Pritchard Impregnating and coating apparatus
US3565239A (en) * 1968-05-15 1971-02-23 Blakeslee & Co G S Dishwashing machines
US4317514A (en) * 1980-04-07 1982-03-02 Noren Tore H Tray lock conveyor for dishwashing machines
US5429226A (en) * 1993-12-15 1995-07-04 Rexnord Corporation Conveyor chain for carrying objects
US20030057058A1 (en) * 2001-09-26 2003-03-27 Ishida Co., Ltd. Conveyance apparatus and boxing system
WO2005087077A1 (en) * 2004-03-11 2005-09-22 Premark Feg L.L.C. Dish carrier for items to be washed in dishwashers
US20060000689A1 (en) * 2004-07-02 2006-01-05 Bekelaar Johannes M M Conveying units
US20060157430A1 (en) * 2004-12-16 2006-07-20 Premark Feg L.L.C. Dish carrier for dish washers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1274385A (en) * 1915-10-15 1918-08-06 Toledo Glass Co Sheet-glass-drawing mechanism.
US2631465A (en) * 1949-05-11 1953-03-17 Cordis Nat Demountable chain
US2840227A (en) * 1956-12-31 1958-06-24 George J Federighi Endless conveyor for dishwashing machine
US3044601A (en) * 1958-12-04 1962-07-17 Champion Dish Washing Machine Conveyor for dish washers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1274385A (en) * 1915-10-15 1918-08-06 Toledo Glass Co Sheet-glass-drawing mechanism.
US2631465A (en) * 1949-05-11 1953-03-17 Cordis Nat Demountable chain
US2840227A (en) * 1956-12-31 1958-06-24 George J Federighi Endless conveyor for dishwashing machine
US3044601A (en) * 1958-12-04 1962-07-17 Champion Dish Washing Machine Conveyor for dish washers

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267902A (en) * 1963-07-15 1966-08-23 George A Pritchard Impregnating and coating apparatus
US3565239A (en) * 1968-05-15 1971-02-23 Blakeslee & Co G S Dishwashing machines
US4317514A (en) * 1980-04-07 1982-03-02 Noren Tore H Tray lock conveyor for dishwashing machines
US5429226A (en) * 1993-12-15 1995-07-04 Rexnord Corporation Conveyor chain for carrying objects
US20030057058A1 (en) * 2001-09-26 2003-03-27 Ishida Co., Ltd. Conveyance apparatus and boxing system
US6866140B2 (en) * 2001-09-26 2005-03-15 Ishida Co., Ltd. Conveyance apparatus and boxing system
WO2005087077A1 (en) * 2004-03-11 2005-09-22 Premark Feg L.L.C. Dish carrier for items to be washed in dishwashers
US20060000689A1 (en) * 2004-07-02 2006-01-05 Bekelaar Johannes M M Conveying units
US7383945B2 (en) * 2004-07-02 2008-06-10 Fps Food Processing Systems B.V. Conveying units
US20060157430A1 (en) * 2004-12-16 2006-07-20 Premark Feg L.L.C. Dish carrier for dish washers
US7857146B2 (en) * 2004-12-16 2010-12-28 Premark Feg L.L.C. Dish carrier for dish washers

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