Patent GB-190212961-A (GB)
Title: Improvements in Mechanism for Recording the Time at which Employees Enter or Leave a Factory or for similar purposes
Inventor: BUNDY WILLARD HAYWOOD
Filed: 1902-06-06
Granted: 1903-07-06
Abstract: 12,961. Bundy, W. H. July 24, A.D. 1901, [date applied for under Patents Act, A.D. 1901]. Time - checking apparatus for employees. Relates to apparatus by which each h employee prints the half-daily or daily times of his arrival and departure on a car d allotted to him. The card inserted into a guide 3 is struck against printing - wheels 1 by using a lever 17, which, acting through the trigger mechanism shown, operates a platen hammer 58, that also strikes a gong. An associated lever applies a setting- pawl t o a dogtoothed wheel attached to the minute-pri nting wheel. The frame containing the printing-wheels is shifted to print in the arrival or departure column, by means of a lever 31. At the beginning of each half day of the week a stop 4 is raised in the guide to change the line of impression on the card by the following mechanism:-The stop is linked to a lever 39 bearing a pin 49 in contact with a snail 42, which is combined with a ratchet - wheel o f fourteen teeth. The driver for this ratchet-wheel is a vertically-sliding bar 35, which is suspended from a lid 5 for the card-guide by means of a link 41, and ends in a pawl 45. Thus, lifting the lid turns the ratchet-wheel and snail, and on Monday morning the feed, completing the revolution of the snail, is three teeth in consequence of the lapse of three half-days from Saturday noon But, at the beginning of every other half-day, the feed is limited to one tooth, because the driver has teeth engaged by an escapement anchor 36 and a co-acting pawl 37. The escapement anchor is connected by a slotted rod 38 with a lever which is operated at noon and midnight by a cam in the clock, and pins 48 are provided on the rod to trip the pawl before the escapement is rocked. The positiou of the stop in the card-guide is read on an indicator, Fig. 3. In a modification, operation occurs daily, and the indicator, having two columns, reads to 31 days. In this time-checking apparatus, the following arrangement of the printing-wheels is preferably used :-The minute-printing wheel is operatively connected with the minute-arbor of a clock by flexible shafting and equal gear-wheels 14. The co-axial hour-printing wheel is attached to a spacing-disc 11 of twenty-four notches, and is driven by the short pointed arm 25 of a bell-crank lever, the long arm 23 of which engages a cam 26 on the outer gear-wheel 14. A stopping-arm 18 is Brat drawn aside by a bell crank catching a terminal latch 21. The arm rebounds to prevent over-driving and a branch 28 of the long arm of the bell crank assists the action. The driving end piece of the bell crank being arranged to slide under the pressure of a spring, the spacing-disc is provided with two deep notches, which allow a slightly smaller spacing-disc to be turned, to which a wheel for printing the half days is attached. A separate stop-arm is provided for the smaller disc, the latch of which is caught by a pin on the sliding end piece. The bell crank is operated by springs 20, which connect them to the stop-arms.