Method of casting the metal parts of massage apparatus operated by water under pressure

摘要

437,060. Casting composite articles; massage apparatus. HOCHMAYR, F., and SZABADI, E., (trading as APPARATEBAU HOCHMAYR, SZABADI, & CO.), 32, Mariahilferstrasse, Vienna. July 31, 1934, No. 22361. [Class 83 (i)] [See also Group VI] In massage apparatus, concentric passages for water are provided by using an inner tubular &c. member 2 as a core between the positions 3, 4 and as a supporter for core material 6 between the positions 4, 5. The removal of the core material 6 provides the return water passage. As shown the tube 2 terminates in a closed ring adapted to furnish fine holes 7 through which the water passes to the massage head.