Patent GB-454463-A (GB)
Abstract: 454,463. Calculating-machines. FAIRWEATHER, W. C., 65, Chancery Lane, London.- (Underwood Elliott Fisher Co.; 342, Madison Avenue, New York. U.S.A.) Sent. 2. 1935. No. 24440. [Class 106 (i)] A combined typewriting and calculating machine has several totalizers, each actuated by a group of pin bars which can be moved into setting position one by one by tappets on the typewriter carriage, each group of pin bars (and thus the associated totalizer) being brought into active position by a corresponding cam plate depressed by a cam on the carriage. When a numeral key is depressed a corresponding bar 30, Fig. 1, is lowered. The machine shown has three totalizers 35 each provided with a group of pin bars 32. When an amount is to be entered into a totalizer, the pin bars of the corresponding group are advanced slightly seriatim denomination by denomination by a tappet 39 on the typewriter carriage, the tappet depressing rods 50. As each bar 32 is moved in this manner, its pins 31 are aligned below the bars 30 and the pin corresponding to the depressed key is forced out of the bar. When the main shaft is operated, a member 132 moves forward to engage the depressed pins and traverse the bars to actuate the totalizer wheels 35 through rack teeth 33 and pawl- and-ratchet mechanism 37. Carriage-controlled totalizer selection.-The rods 50 depressed by the carriage tappet 39 each move forward a master bar 59, Fig. 2, having teeth 66 engaging a longitudinal bar 67. Each group of pin bars 32 is controlled by a group of secondary bars 79. Each longitudinal bar 67 is coupled to one secondary bar 79 in each group. As each rod 50 is depressed, the corresponding secondary bar in each group is thus advanced. The secondary bars 79 are normally disconnected from the pin bars 32, but when the carriage arrives at a position at which a particular totalizer is to be actuated, a cam 102 on the carriage depresses a plate 103 and rod 104 to couple the corresponding group of secondary bars 79 79 and pin bars 32. There is one plate 103 for each totalizer and more than one totalizer may be engaged at any one time. The depression of a plate 103, rocks a lever 107 connected by a link 111 to a pair of bell-cranks 85 supporting a bail 86. Connecting bars 81 pivoted to the secondary bars 79 are supported by the bail 86 and when the bell-cranks are rocked the bars 81 are lifted so that when the secondary bars 79 are moved forward they act on the ends 83 of the pin bars 32. Crowding locks. A fork 159, Fig. 1, of each keystem can enter between pivoted levers 160 forming a crowding lock which allows one key only to be depressed at any one time. Interlocks.-(a) To prevent a pin bar 32 being advanced to pin-setting position while the main shaft is being operated, a main operating bar 137, Fig. 5, rocks a lever 141 as soon as the bar moves from its stationary position. This lever 141 is connected to a shaft 147 carrying arms 146 supporting the shaft 145 on which are pivoted the levers 55 connecting the rods 50, Fig. 1, to the master bars 59. The rods 50 thus sink below the reach of the carriage cams 39 so that no pin bar 32 can be advanced. (b) To prevent the depression of a numeral key while the main shaft is being operated, the shaft 147, Fig. 5, is connected by a link 179, Fig. 2, to a shaft 170 which pulls forward a bar 165, Fig. 1, to rock a lever 164 the end 162 of which engages between the levers 160 of the crowding lock. Punctuation. When the carriage is in certain positions, a rod 172, Fig. 2, is depressed to rock the shaft 170 connected by the bar 165, Fig. 1, to the crowding lock 160 which is thus operated to prevent the depression of a numeral key. Specification 343,804 is referred to.