Coating apparatus – Projection or spray type – Work-supported and guided carriage
Patent
1987-11-25
1989-12-19
Beck, Shrive
Coating apparatus
Projection or spray type
Work-supported and guided carriage
118317, 222635, 239224, B05B 310
Patent
active
048875465
ABSTRACT:
The invention relates to the lining of bore holes with cement or the like by apparatus designed to spray cement directly on to the raw face of the hole. Such apparatus in accordance with the invention comprises a spray head, means to drive the head through the hole and means for delivering cement to the head characterized in that the head has an annular chamber into which cement is fed and from which colloidal cement is fed in an annular ring to a rotatable spray disc or arm which is arranged to distribute the cement substantially evenly over the internal surface of the hole.
The annular feed enables even spray to take place while avoiding problems associated with axle feeding.
REFERENCES:
patent: 2461517 (1949-02-01), Carnevale
patent: 2839026 (1958-06-01), Matheny
patent: 2922583 (1960-01-01), Perkins
patent: 3159895 (1964-12-01), Perovich
patent: 3401988 (1968-09-01), Pingree
patent: 3810441 (1974-05-01), Padgett et al.
patent: 4108384 (1978-08-01), Egli
patent: 4178875 (1979-12-01), Moschetti
patent: 4199108 (1980-04-01), Baumgartner et al.
patent: 4414918 (1983-11-01), Holland et al.
Beck Shrive
Caledonian Mining Co. Ltd.
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