. Handbook for rangers & woodsmen . or $ Block.—A block plane is especially adapted for cutting acrossthe grain of wood. The blade is raised or lowered by means ofa smaU horizontal screw wheel located immediately beneath thepalm piece. Its rim works in a Y-lever fitted at the forward endwith a vertical elbow joint the end of which fits into groovesin the lower side of the blade. To release the blade the screwbolt near its center must be loosened until the blade can be shdalong to where the hole at the end of the slot coincides with thebolt. This plane should have about a 6- or 7-inch fram
. Handbook for rangers & woodsmen . or $ Block.—A block plane is especially adapted for cutting acrossthe grain of wood. The blade is raised or lowered by means ofa smaU horizontal screw wheel located immediately beneath thepalm piece. Its rim works in a Y-lever fitted at the forward endwith a vertical elbow joint the end of which fits into groovesin the lower side of the blade. To release the blade the screwbolt near its center must be loosened until the blade can be shdalong to where the hole at the end of the slot coincides with thebolt. This plane should have about a 6- or 7-inch frame andshould carry an inch or an inch-and-a-haK blade. The costvaries from seventy-five cents to $ Chisels.—These consist of the wooden handle, the handlesocket, the shank, the blade, and the bit. The last has a single CONSTRUCTION WORK 125 bevel at the rear and the corners are square. Ordinarily a setincludes eight pieces, but for all common work about a stationfour chisels will be found sufficient. These should be ^-, %-,. Fig. 107.—Chisels. 1- and 13^^-inches in size. The four cost from seventy-five centsto $ Level-Plumb.—In view of the fact that many inferior instru-ments are placed on the market, this tool should be tested beforeit is purchased. An easy yet accurate test is to place it on asmooth, straight plank and then block the plank up till theinstrument indicates that it is level. This will be when thebubble remains stationary immediately under the mark foundon the glass or the glass guard. If the bubble assumes thesame position when the instrument is reversed the level is re-liable. The plumb is tested in a similar manner except thatthe instrument is placed in a vertical position against an objectknown to be plumb. The bubble will rest immediately under Fig. 108.—Level-plumb. the plumb mark regardless of whether the face or the back isplaced against the object. The best instrument for rough work has a 20-inch iron frameand costs from seventy-five c
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
