Cutting – With means to control or modify temperature of apparatus or... – Of tool
Patent
1975-11-24
1976-07-13
Abercrombie, Willie G.
Cutting
With means to control or modify temperature of apparatus or...
Of tool
83565, B26D 710
Patent
active
039687112
ABSTRACT:
This invention relates to apparatus for cutting patterns from blocks which thereafter may be used as molds for forming radiotherapy shields. The device comprises rigid rod means connected at one end thereof to a frame for pivotal movement therewith and having tracing means at the other end thereof so that a pattern such as the X-ray of a portion of a patient's body may be traced thereby. The pattern traced is transmitted to the intermediate portions of the rigid rod means which includes an offset portion within which a block of plastic material, such as polystyrene foam, is placed. This offset portion is spanned by a spring-loaded, electrically heated wire which serves to cut an opening in the plastic block corresponding to the pattern traced by tracing means. Thereafter the block with the patterned opening cut therefrom is used as a mold for receiving metal shielding material. The metal block so formed is then used as a shielding block to prevent X-rays and the like from contacting that part of the body that has been traced, during subsequent radiotherapy treatment.
REFERENCES:
patent: 3017487 (1962-01-01), Priestly
patent: 3540336 (1970-11-01), Kelsey
Abercrombie Willie G.
Huestic Machine Corporation
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