Patents by Inventor Leonard Henry Calver

Leonard Henry Calver has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 3977157
    Abstract: A packing machine for cigarettes comprises a carton blank reservoir, a carton blank hopper, a blank feeding device, a blank transfer conveyor, a bundle drum, a packet forming drum, a packet stacking unit and a packet orientation unit.Carton blanks are removed one at a time from the hopper by a suction device and fed intermittently by the transfer conveyor to a position adjacent a pocket in the packet forming drum, the blank then being pushed into the pocket so as to partially form it into a carton. Whilst on the transfer conveyor adhesive is applied to certain parts of the blank and initial holding of the blank takes place.Foil wrapped bundles of cigarettes are pushed, two at a time, into pockets provided on the bundle drum and transferred one at a time into a partially formed carton contained in a pocket on the packet forming drum.
    Type: Grant
    Filed: February 19, 1974
    Date of Patent: August 31, 1976
    Assignee: Molins Limited
    Inventors: Robert William Davies, Maxwell Francis Veness, Leonard Thornton, Leonard Henry Calver