| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Block maker | Occupations | 1: Splits rough dimension stone into smaller units, such as paving blocks, ashlar, or rubble, using airhammer, wedges, and shims: Scans stone to determine rift and grain lines of splitting, usually at right angles to each other. Chips rough edges from stone, using chipping hammer. May be designated according to product made as Paving-Block Cutter (stonework) II. May split rough slabs of slat into sheets for use as coping, flooring, and roofing and be designated Slate Splitter (stonework). (references) | |
| 2: Tends automatic machine that casts concrete blocks: Starts and stops machine that automatically fills molds, vibrates molds to compact wet concrete, scrapes off excess concrete, and strips finished blocks from molds. Guides hoist to transfer pallets loaded with blocks to curing racks. May assist in setting up machine. May tend machine equipped with automatic off bearing mechanism. May verify dimensions of formed blocks, using template. (references) | |||
| 3: Molds lead blocks to be used as shields in radiation therapy treatments: Lays out x-ray film taken of patient in treatment position and tapes film over grid on lighted table. Sets distances on mold cutting machine, duplicating distances from which x ray was taken. Calculates required thickness of block, based upon equipment to be used in treatment and applying knowledge of geometry. Aligns template and styrofoam piece in blocking tray over x-ray film. Guides hand held stylus along lines drawn on x-ray film or print showing area to be treated, simultaneously cutting styrofoam piece with hot wire to form styrofoam mold used in making block. Sets mold in vise and tightens metal clamps to hold mold securely in position. Pours heated lead alloy into mold to form block. Mounts cooled block on lucite board, using screws. Installs finished block in tray of machine and views superimposed outline of block on x-ray film to verify accuracy of block and adherence to standards. Records patient information on finished block. May transport patients to and from treatment area. (references) | |||
Source: compiled by the editor from various references; see credits. | Top | ||
