Patent GB-190113457-A (GB)
Title: Improvements in Cash Registers.
Inventor: SMITH ELMER STILLMAN
Filed: 1901-07-02
Granted: 1902-05-01
Abstract: 13,457. Smith, E. S., and Giles, H. July 2. Receipts, checking and recording.-Fig. 8 shows a cross-section of the apparatus, Figs. 24 and 28 are views in the same sense of parts not seen in Fig. 8, and Figs. 6, 7, and 38 additional views of details. When setting-levers 53, loose on and radiating from a driving-shaft 61, are raised over correcting wave arcs 57 to read an amount in cents, dimes, and dollars from intercalated scales of digits 56, concentric toothed quadrants 61 with underlying lips 67 follow them, under the pull of springs 65, so as subsequently to actuate registering-wheels 100, and rack-bars 62 jointed to them turn indicating drums 63 with pinions 72 on a shaft 73, being held in gear by easy guides 74. On then pulling a crank handle 76, Fig. 28, fast on the driving-shaft 64, down through 90‹, the following actions occur :-(1) A plain quadrant 190, wiping the bevelled end 191 of a bar 187, shifts it longitudinally so that lips 188 engage toothed arcs 186 attached to the setting-levers 53, and thus lock them. (2) A strap 97 strikes a pivoted bolt 98 up from the cash drawer. (3) A loose lever 84, being struck at its short end by a wiog 96, lifts a vertical slide 80, and so raises the guided shaft 73 of the indicating-drums till they are in view through a window 75, the effect of gearing with the racks being allowed for. The slide becomes supported in its raised position by a prop 86, which a spring 89 pulls into an aperture 85. (4) The registering- wheels 100, being in a rocking frame 102, Fig. 24, which has a lip 116 overlying a hanging plate 119, are carried from locked pinions 109 to the toothed quadrants by the displacement of the hanging plate as a cam quadrant 120 passes a roller 121 on it. While thus in gear, pallets 150, Figs. 6 and 7, acting on pins 68, turn the toothed quadrants back to their initial position, and so equally turn the registering-wheels, which friction or pawls prevent from reversing. (5) If any of the cams 156 attached to the registering-wheels passes the righthand shoulder 170 of a corresponding sleeve 159 on a shaft 158, a ratchet lever 160, having the shaft of the rocking frame as a fulcrum, drops off the left-hand shoulder 169 of the sleeve, and its pawl 164 drops down one tooth of a pinion attached to the next registering-wheel to the left. This action is allowed because a companion lever 161, following pins 151 on the driving-shaft, drops away from notches under the right-hand shoulders of the sleeves. (6) Complete operation is ensured because a pawl 135, Fig. 28, on a pawl plate 134 is in engagement with a ratchet disc 137 on the driving-shaft. This pawl plate is connected by a pin 130, on which a spring 128 pulls, to a pallet 122, Fig. 24, which is engaged by a pawl 123 on the hanging plate, but at the end of the stroke a pin 127 on the cam quadrant disengages the pawl, and the spring accordingly sets the pawl plate so that another pawl engages the reverse teeth ou the ratchet disc in order to compel completion of the subsequent return movement. (7) The hammer 124, which is pivoted upon the hanging plate, is tripped to strike a gong by a pin 125 on the pallet 122. The movement of the pawl plate and pallet being limited by a stop plate 129, in the return movement of the hanging plate the hammer again gets below the tripping-pin. (8) At the end of the stroke a pin 132 on the cam quadrant encounters an arm 154 on a shaft 152, and thus stop arms 153 are brought up to meet the toothed quadrants. On making the return upward stroke of the crank handle the following actions occur ;- (1) The stops 153 recede the space of one tooth from the toothed quadrants owing to the spring 155. (2) The pins raise in succession the dropped ratchet levers 160, so carrying the tens, in which action the toothed quadrants touch the stops 153. (3) The pins 151 raise the companion levers 161, which reset the sleeves. (4) On completion of the operation, the rocking frame of the registering-wheels, being set free by the pull of a spring 117, lifts them from the quadrant back to the locked pinions. The setting-levers and indicating-drums remain unaffected until the next operation, when, if the amount is different, ratchet teeth 92 in the backs of the rack-bars 62 pass doas 91 on the shaft of the prop 86, and so disengage it to let the frame containing the drums sink under the control of springs 93, 94. When unlocked, a hinged door 212, opening inwards, allows the total to be read through apertures in a guard plate 112, and, if the highest amount capable of being registered has been received, a slip of paper 200, which is folded upon a removable plate 198 and over the holding-spring 202, will be found punctured by a spike upon the left-hand registering-wheel. Opening the door sets free the locking-pawls 114 of the pinions with which the registering-wheels gear, so that a rotation of all the pinions by their common shaft sets the registering-wheels to zero. In this operation carrying of tens is prevented, because a set of arms 193 on a shaft 192 abut against the rear sides of the ratchet-lever 160, owing to a larger arm 194 being supported by the plate 96 upon the driving-shaft 164. In the adding operation the retrocession of the plate as the crank handle is pulled down allows the arms to leave the ratchet levers. The use of the apparatus may at any time be stopped till the total up to that amount has been read, by pushing a latch pin in the crank handle back to a spring lock the key of which is only possessed by the person authorized to take the reading. In its locked position, a groove in the hub of the handle is engaged by a pallet 138 on the pawl plate, so that removal for the purpose of wrongful operation by an instrument is prevented.