Abstract: A watchband securing device includes a variable length rod extending between opposed watch case horns. One of the horns is pivotally connected to the watch case and one end of the rod is connected to the pivotable horn. This enables the rod to pivot laterally between open and closed positions away from and towards the watch case, respectively. After a watchband is threaded on the rod in the open position, the rod is rotated towards the closed position until the opposite end of the rod engages the opposed horn. A camming surface is provided between the rod and the opposed horn that causes the rod to be shortened against a spring force as it engages the opposed horn so that it can become aligned with a bore hole in the opposed horn and engage the borehole by the spring force extending the rod length. To release the rod from the opposed horn, a manual push piece is provided to enable manual shortening of the rod so that it clears the borehole and releases the rod for pivotal motion towards the open position.

Abstract: A timing mechanism having a tide indicator including a window in its dial. Under the dial is placed a flat annular wheel fitted with two signs or indicator markings which appear in turn in the window. Around the edge of the window are additional indicator markings which enable one to estimate the time until the next tide. High tide is shown when one of the appropriate signs is situated at the top of the window, and low tide when it is at the left or right thereof. The annular wheel is guided by a semicircular plate around which it slides. It is driven by a toothed wheel fixed on a motion work of the watch movement. The toothed wheel activates a gearing fitted around the internal circumferentce of the annular wheel.