Patent GB-191123558-A (GB)
Title: Improvements in Automatic Mechanism for Recording the Periodical Visits of Night Watchmen and for like Recording purposes.
Inventor: BURGESS WILLIAM HENRY
IPC: G07C1/20
Filed: 1911-10-25
Granted: 1912-11-25
Abstract: 23,558. Burgess, W. H. Oct. 25 . Date and time printing.-In apparatus for obtaining printed timerecords of the movements of watchmen, the men are provided with keys for operating, at various stations in their rounds, contact boxes or transmitters whereby electric impulses are sent to a central recording-apparatus in order to automatically print a record of the time and station number, the invention relating more particularly to the arrangement of the printing - wheels and actuating - mechanism therefor, and also to the paper-feeding, inkribbon, and impression mechanism of the recorder. Time type - wheels. The hour type-wheel 10, Fig. 5, is loose upon a spindle 12, being connected by a sleeve with an actuating ratchetwheel 15, and the fiveminute type-wheel 11 is fast on the spindle, to which is also secured an actuating ratchet-wheel 16. Through the agency of time - keeping mechanism (not shown) preferably of the kind described in Specification 22,604/12, [Class 139, Watches, &c.], an electro - magnet (not shown) is energized at equal intervals so as to rock a spindle 59, Fig. 11, upon which is fast a lever 64 carrying two pawls 65, 66 which press against a notched disk 17 and the fiveminute ratchet - wheel 16 respectively, overrunning being prevented at actuation and transfer by means of a pin 68<a>. As the notched disk rotates with the five-minutes wheel, the pawl 65 intermittently falls into a notch, whereupon a pin 72 couples this pawl with an actuating-pawl 67 for the hours ratchet-wheel 15, by slipping into a slot 73 therein. The hours pawl is carried by an arm 63 loose upon the shaft 59 and is normally held by a spring 68 against the detent pin 68<a>; when coupled, however, it is drawn downwards with the fiveminutes pawl and actuates the hour-wheel upon its upward spring-impelled movement. Feeding ink-ribon and paper. Record paper from a supply-roll 29, Fig. 3, passes over a carriage 20, Fig. 4, above the type-wheels, the carriage being adapted to slide longitudinally upon studs 19 under the impulse of a transverse electro-magnetically-operated bar 56<a> and having gripping means for feeding both the paper and an endless ink-ribbon 24, which passes over suitable guide-rollers and is kept in tension by a loose weight 27. The operating-bar presses forward an upstanding arm 30<a> upon a spindle 31, which carries also side arms 30 holding adjustable gripping-screws 32, the points of which are thus pressed upon the paper before the carriage begins to move; upon the return stroke, effected by a spring 20<a>, the points are drawn over the paper without action. Operating printing-mechanism. Each transmitter completes the circuit of an electro-magnet (not shown) for depressing a platen 36 upon a pivoted arm 34 at the moment when the station number type-wheel pauses, at the setting corresponding to the transmitting station, before completing its revolution. As this wheel regains its normal zero position, a pin 133, Fig. 10, thereon rocks a bell-crank lever 134, 126, the hooked end of which releases other link-work to enable a contact 124, 131 to be completed in the circuit of the electro - magnet 52, which operates the paper-feeding carriage and simultaneously effects a re-setting of the linkwork by means of a bent lever 53, 54 and a pin 132. The clock-face is provided with special dials to facilitate the setting and indicate the position of the time-type-wheels, and the impression and station - wheel electro - magnets are placed in relay circuits.