on and the nuts connected together by a screw-threaded bar carrying a phia, Pa. : _urned down upon the slotted plate, A, until the parts clamping wheel, which may be readily turned for clamping the plates to the window sill. A block is used in connection are clamped together with the required… … BERRYHILL’S IMPROVED NUT LOCK. greater part intermixed with the ice, giving it the appear- of the bar, A, until they touch the sides er corners of the |, ance of thin scales with dendritic markings. | to be attached to a sloping window sill, so as to elevate the nuts, then the blocks, B, are…
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