With Conveyors Providing Plural Or Zigzag Treated Material Paths Patents (Class 34/203)
  • Patent number: 4233754
    Abstract: Apparatus for ultraviolet drying and/or curing of freshly applied solvent-free ink on three-dimensional articles such as containers. Baskets for carrying the articles are swivelly mounted at spaced locations on an endless conveyor. The conveyor pathway has a bend or loop when viewed in elevation, the shape of which is determined by a drum or sprocket. A tubular ultraviolet lamp is arranged, preferably in the crook of the bend or loop, parallel to the axis of curvature of the bend or loop. The baskets are of perforate construction, preferably comprising wire strips in planes which intersect along lines parallel to their respective swivel axis. The lamp irradiates a predetermined sector of each passing article in the course of displacement over the bend or loop; shadows falling on the articles due to nonperforate portions of the baskets move continuously along the predetermined sector so that no spot on the predetermined sector is constantly obstructed from the ultraviolet radiation.
    Type: Grant
    Filed: February 14, 1978
    Date of Patent: November 18, 1980
    Inventor: Jean-Louis Dubuit
  • Patent number: 4231470
    Abstract: A conveyor system of the type which may be utilized with an apparatus comprising a plurality of treatment areas such as an oven system containing a proofer for conditioning dough and a baking oven downstream of the proofer for baking the conditioned dough. A plurality of carrying pans are attached to a conveyor that is continuously directed through the proofer and baking oven in a serpentine path. The residence time for a pan within either the proofer or the baking oven can be varied by a conveyor length adjustment system that functions to provide changes in length of the conveyor in the proofer and in the baking oven. The conveyor system comprises movable sprocket assemblies positioned within the proofer and within the oven. The sprocket assemblies are movable in equal and opposite directions for respective length adjustment of the conveyor within the proofer and the oven.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: November 4, 1980
    Assignee: National Drying Machinery Company
    Inventor: Ralph C. Parkes
  • Patent number: 4219942
    Abstract: A continuous drying system for fabrics, comprising fabric inlet and outlet means, respectively; means for continuously introducing the fabric into the chamber and laying it down on at least one conveyor moving it to said outlet means. A system for drying air circulation comprises at least one fan unit having its delivery side connected through an air heating unit to at least one blowing channel overlying the fabric on the conveyor, and the intake or suction side is connected to at least one channel underlying the fabric to keep a circulation of an air flow passing through the fabric to be dried.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: September 2, 1980
    Assignee: Essico S.r.l.
    Inventor: Luigi Coliva
  • Patent number: 4196527
    Abstract: A drying oven comprises a plurality of superposed endless belt conveyers that feed each to the next lower conveyer. The upper two conveyers are separately fed from individual hoopers; and the third conveyer receives all the material from the upper two. In this way, fruits and vegetables of different sizes can be given different drying times, by running the two upper conveyers at different speeds. A plurality of superposed blowers with selectively adjustable louvers is provided, for regulating the flow of hot air to various of the superposed conveyers; and a fan can blow cooling air horizontally across certain of the conveyers.
    Type: Grant
    Filed: August 23, 1978
    Date of Patent: April 8, 1980
    Inventor: Henri Escande
  • Patent number: 4142304
    Abstract: Treatment of articles in an enclosure traversed by gases, according to which the articles are advanced translationally and are simultaneously rotated, characterized by apparatus for causing the articles to travel the length of the enclosure several times and at different levels, and for causing the articles to roll on flat superimposed surfaces extending across the enclosure by bringing them in contact with driving components carried in a continuous or endless circuit so that the same components provide for successive travel of the articles first in one direction, and then in the other direction at two different levels.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: March 6, 1979
    Assignee: Saint-Gobain Industries
    Inventors: Aldo Ricci, Nedo Passerini
  • Patent number: 4126946
    Abstract: A process for drying grain in which the grain is first heated to drive off a portion of the moisture as it passes along a conveyor, and the heated and partially dried grain is then discharged into a holding or steeping bin where the moisture in the center of the kernels migrates to near the surface and the temperature becomes substantially uniform throughout. The grain is then discharged onto a second belt where the grain is first heated to drive off a substantial part of the moisture remaining in the grain and then is cooled before it is discharged from the apparatus. Air is used to cool the grain before it is discharged and this partially heated air is utilized in both grain heating operations.
    Type: Grant
    Filed: May 5, 1977
    Date of Patent: November 28, 1978
    Inventors: James F. Buffington, Lee E. Norris
  • Patent number: 4045882
    Abstract: An appartus and process for drying grain in which the grain is first heated to drive off a portion of the moisture as it passes along a conveyor, and the heated and partially dried grain is then discharged into a holding or steeping bin where the moisture in the center of the kernels migrates to near the surface and the temperature becomes substantially uniform throughout. The grain is then discharged onto a second belt where the grain is first heated to drive off a substantial part of the moisture remaining in the grain and then is cooled before it is discharged from the apparatus. Air is used to cool the grain before it is discharged and this partially heated air is utilized in both grain heating operations. The apparatus includes upper and lowersections with porous conveyor belts for moving the grain between a receiving hopper to the bin and from the bin into a discharge recepacle.
    Type: Grant
    Filed: June 30, 1976
    Date of Patent: September 6, 1977
    Inventors: James F. Buffington, Lee E. Norris