in the lower bolt, so that when the door is closed bothbolts will automatically slide into their keepers, andwhen the latch bolt is moved back to open the door,the trip rod, through the vertical lever, causes thelower bolt also to be withdrawn from its keeper.The trip rod may be held to slide in… … AN IMPROVED WRENCH.The wrench shown in the illustration, patented byMr. John Ryan, iscomposed of butthree parts, andis designed to bevery strong anddurable, while be-ing quick andeasy of adjust-ment. The shankhas the usualfixed jaw at itsouter end, and itsinner edge, for aportion of itslength, is…
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