380 FEDERAL REPORTER. �device whereby, at certain intervais, — say on every seventh day, — the lock will remain looked during the time when ordinarily it would be unlocked." In order to give a more clear idea of the "adjustable devices," and the means for actuating the dogging mechanism, I quota the following de- scription, which I believe to be accurate : �"The time movement revolves a compound disk, composed of two single disks of the same shape and size, placed face to face on a common axis, each having an equal portion of its periphery eut away so as to leave in each a depression of the same form and size as that in the other. When these two disks or wheels are fastened together by a thumb-screw they form one wheel or dial, having a depression in its pe- riphery. �"The inner wheel is adjustable on the common axis rela- tively to the other. The depression in the periphery of the double disk, caused by the cutting away of the periphery of each of the single disks, can be made longer or shorter, therefore, according to whether the inner disk is turned so that its cut-away portion is more or less in coincidence with the cut-away portion of the outer disk or dial. The outer dial is adjustable relatively to the time movement, because the ratchets in the time movement permit it to be moved by hand in the direction it is carried by the time movement, just as the hands of a clock may be moved forward by hand. �"One end of a bent pivoted lever rests upon the edge of the double disk or dial, and the other end supports a "dog," piv- oted to the side of the safe in such a position that its pivotai movement brings it behind or away from the multiple boit work. When the 'dog' is behind the boit work the latter cannot be thrown back, and the door is held locked. When it drops down out of the way of the boit work the boit work is free to be retracted and the door may be opened. �"When the double disk revolves, and the shoulder at one end of the cut-away portion of its periphery cornes under the lever, the lever drops, and when the shoulder at the other end of the cut-away portion comes under the lever, it lifta the lever up, and, as the other end of the lever supports the ' dog,* ��� �
