vement of the knife, position, no matter at what angle the ladder may slots, according to the thickness of the door. The and is guided in the slot, the inner part of the cheese weight of the latch is so distributed that, normally, be placed. The two pairs of side bars are pivoted to iscut. The… … which acts as a lever for holding the gang bars in po- sition, and the rear inner corner of each frame is con- and slot, either by the use of the knife or wire, or of nected to the upper portion of the main frame by a both combined. The knife cuts mainly through the coiled spring, which serves to…
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