Figure 13-18.—Throatless shears.Hand Bench ShearsThe hand bench shears operate similar to a papercutter. They have one fixed blade and a movableblade, hinged at the back. They are similar to thethroatless shears except the blades are straight andused only for straight cutting. Some bench shearshave a punching attachment on the end of the frameopposite the shearing blades. This attachment is usedto punch holes in metal sheets.To cut stock that is narrower in width than thelength of the blades, the lever of the shears can bepulled all the way down. When you are cutting largerpieces, a series of short bites should be made.NOTE: Complete closing of the blade tendsto tear the sheet at the end of each cut.UnishearUnishear is a trade name for a type of portablepower shears. It is used for cutting curves and notchesas well as straight-line cutting.This tool might be called power-operated,combination snips.It has two short blades. Thelower blade is held in a fixed position. The upperblade moves up and down in short strokes at a highrate of speed. Its chewing motion is the basis for thewidely used nickname of this power tool—"nibbles."Figure 13-19 shows an 18-gauge Unishear.The cutting blades are easily removed forsharpening and replacement. The machine will cut asfast as it can be fed, up to 15 feet per minute. This isa ruggedly constructed machine; but for satisfactoryperformance, you must give it the best of care. Itshould be kept cleaned and oiled at all times.Figure 13-19.—18-guage Unishear.13-13
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
