antly press the rail partly by the same bolt which holds the diagonal bolt forward, the handle of which projects through an brace to this rail. This angular plate is also held firmly opening with side notches to permit the turning of by a nut which locks thereon the end of the vertical the handle… … Fig. 2, so that it will exert a cam action in the keeper for closing the door tightly. When the handle stands at right angles to the door, as shown in Figs. 1 and 3, the flat surface on one side of the extremity of the bolt will face outward, and in this position will hold the door and door frame…
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