Coating apparatus – With printing
Patent
1981-07-15
1983-11-15
McIntosh, John P.
Coating apparatus
With printing
118 50, 118 57, 118 67, 118 69, 118 70, 118312, 118412, 118415, 118643, B05C 1102, B05C 1900
Patent
active
044149131
ABSTRACT:
A thermo-engraving machine has safety, energy conserving and convenience features. The thermo-engraving machine receives a freshly printed sheet, passes it through a device for depositing powder. It heats the powder to cause the powder to melt, then cools the sheet to create raised printed material. The deposition device in one case is a tank with a vertical partition that provides separate containers for powders of different types. The other deposition device is a cyclone type that is pivotal to allow easy cleaning and has toothed wheels in its suction manifold to retain the sheets. The oven has sidewalls that will laterally move to vary the width of the oven. Heater elements in the oven can be selectively turned off for smaller widths. The oven is held by a latch that releases the oven to spring upward should electricity be cut off to the solenoid that holds the latch in position. The cooling conveyor curves around from the back of the oven and leads to the front of the machine, preferably over the top of the oven. The cooling conveyor has a conveyor belt assembly and positive and negative plenums on its sides to retain the sheets in connection with the conveyor belt assembly and cool them at the same time.
REFERENCES:
patent: 1358614 (1920-11-01), Boecler
patent: 2603180 (1952-07-01), Berndt
patent: 2674809 (1954-04-01), Meienhofer
patent: 2695005 (1954-11-01), Lewin et al.
patent: 2757635 (1956-08-01), Lipsius
patent: 3012901 (1961-12-01), Reese
patent: 3021817 (1962-02-01), Limberger
patent: 3257226 (1966-06-01), Thwaites
patent: 4327665 (1982-05-01), Arrasmith
Bradley James E.
McIntosh John P.
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