Patent GB-319980-A (GB)
Abstract: 319,980. Benzing, F. E. Oct. 9, 1928, [Convention date]. Time and cost, computing. - In a workmen's time recorder the time spent on a particular job is obtained from a controlling device comprising a set of type wheels under the control of the clock driven time type wheels. The time type wheels are adapted to be turned in a direction opposite to that in which they are driven by the clock and in so doing displace the control device an amount to represent the difference between the times of starting and finishing the job. As shown in Figs. 1 to 4, two time type wheels 4, 5 are provided controlled by a clockwork mechanism (not shown). The drive to the type wheel 4 is through pinions 21, 22 and a driving wheel 18 resiliently coupled by means of a spiral spring 19 and pins 4<11>, 181 to the wheel 4. The wheel 4 represents hundredths of an hour and carries a pin 1811 operating, at each revolution, an escapement lever 27 to permit a step by step movement to an escapement wheel 26 and pinion 25 engaging the driving wheel 24 resiliently coupled by a spring 23 and pins to the type wheel 5 representing hours. The type wheels 6, 7 of the controlling device are similarly marked and are connected to their respective time wheels by one-way connections. The type wheel 4 has a toothed rim 4<1> engaging a gear wheel 8, Fig. 3, fixed to a shaft 9 and carrying a pawl 10 cooperating with a ratchet wheel 11 loose on the shaft. The ratchet wheel 11 is rigidly connected to a coaxial gear wheel 12 meshing with the toothed rim 6<1> of the type wheel 6. The coupling between the wheels 5, 7 is provided by a gear wheel 13, Fig. 2, fixed to a shaft 14 to which is also secured a ratchet wheel 15 cooperating with a pawl 16 mounted on a gear wheel 17 loose on the shaft. The shafts 9, 14 carry pointers 29, 29<1>, co-operating with stationary indicating discs 30, 30<1>, provided with holes 31, 31', for each unit of time. The pointers are provided with set pins 32, 32', adapted to be moved to engage one of the holes and to be released therefrom by a releasing arm 33, 33<1> axially displaceable against the action of leaf springs 34, 34<1>, by means of controlling levers 35, 35<1>. To obtain a record of the time occupied by a job the pointers 29, 29<1> are turned back to a position indicating the starting time as printed on the workman's job card and the set pins 32, 32<1>, are pressed into the corresponding holes 31, 31', and retained in set position by springs 39, 39<1>. By this reverse movement the control type wheels 6, 7, are rotated so as to present, at the printing position, type elements representing the difference between the finishing and starting times. Operation of the main printing lever to record the time causes a movement of the control levers 35, 35<1> whereby their bevel ends displace the arms 33, 33' to release the set pins and permit the springs 19, 23 to advance the time type wheels to their last final position. The .return movement of the type wheels 6, 7 to their zero position is effected by a spiral spring 40, Fig. 4, and a spiral spring 38, Fig. 2, respectively. In the zero position the wheel 6 abuts with its pin 6<11> against a lever 42 pivotally mounted on the side frame 2 while the wheel 7 is returned until a pin 17<1> on the wheel 17 abuts against a nose 36<1> on a locking arm 36 fixed to a shaft 37. In certain instances it may be necessary to turn the pointer 29 through its zero position so as to subtract one unit from the hour wheel 7; this is effected by the operator, who, in moving the pointer 29, displaces an arm 45 secured to the spindle 37 so as to withdraw the nose 36<1> of the locking arm from engagement with the abutment pin 17<1> and present a second nose 36<11> thereto and at the same time through an arm 50 on the spindle 37 to disengage the pawl 16 from the teeth of the ratchet wheel 15 to permit the spring 38 to turn the wheel 17 one step to bring the pin 17<1> into contact with the nose 36<11>. The displacement of the arm 45 may, if desired, be effected automatically under control of the pointer 29. In a modification the pointers 29, 29<1> are replaced by setting discs such as 53, Fig. 9, marked with divisions and provided with holes representing units of time. To set the job time a pin 55 is inserted in the hole corresponding to the starting time and the disc 53 rotated clockwise until it meets an abutment lever 58 pivoted on a spring loaded arm 56, the lever 58 being rocked to release a locking lever 60 from engagement with a notch 56<1> of the lever 58. The lever 60 is thus free to engage the teeth of the disc 53 and lock it against movement in the driving direction. During the operation of the impression mechanism the controlling arm 61 is operated to move the locking lever to its latched position.