Patent GB-542476-A (GB)
Abstract: 542,476. Calculating machines. BROIDO, D. Aug. 20, 1940, No. 13228. [Class 106 (i)J A machine for non-uniform numerical systems comprises a set-up mechanism with value-entering means controlled by manually adjustable elements, a register, means for varying axially the relative positions of the set-up mechanism and the register, means for driving the value-entering means, and actuating means between the value-entering means and register comprising direct gear trains in 1 : 1 ratio to drive corresponding denomination wheels of the register, and means controlled by the value-entering means for additionally driving the reg. ister wheels to an extent depending on the inter-relation of the units of the non-uniform numeral system. G e n e r a l arrangement. - Pounds, shillings and pence receivers A, B, C and a register R are shown in Fig. 1. Each receiver indicates 13 positions 10<SP>3</SP>-10-<SP>4</SP> in which the element of the set-up mechanism can be located. The positions L1-L10<SP>4</SP>, S1-S10 and D10-<SP>2</SP>-D10 correspond to the initial position of the various barrels of the set-up mechanism in the barrel shaft. All receiving elements, with the exception of those denoted D10, D10<SP>2</SP>, D103 and L10-<SP>1</SP>- L10-<SP>4</SP> are connected by individual trains of gears having a 1 : 1 ratio to certain wheels of the register R. These are represented by plain arrow lines. The numeral wheels L10<SP>6</SP>-L1, S10, and D1-D10-<SP>4</SP> in addition to being operated by 1 : 1 gears are operable by fixed ratio clutches represented by squares immediately above the register R, the rates being stated inside each square. For example, the element D10 is connected to a clutch with 1 : 10 ratio and for every impulse received sends 10 impulses to the register wheel D1 and so on. Similarly D103 for one impulse received sends 4 impulses to wheel L1, 3 to wheel S1 and 4 to wheel D1. Set-up mechanism. - This comprises groups of barrels of the well-known Odham type fire barrels 10, L1 to L10<SP>4</SP>, Fig. 5, each having nine pins 11 for the pounds, a second group of ten barrels S1, S10 for shillings of which S1 has nine pins 11 and S10 only one pin, and a third group of four barrels D10-D10-<SP>2</SP> for pence, the D10 having only one pin. These are mounted on a sleeve 21 rotatably and slidably mounted on a stationary shaft 20 and form a carriage. A double gear 29, 29<SP>1</SP> is held by a stop 32 so that the sleeve may slide but not rotate relatively thereto. A bar 28 on the carriage has rack teeth 33 meshing with a gear 34 fixed to a stop disc 35 rotatable on shaft 36. A stop lever 39 pivoted at 40 is forced by a spring 42 to engage the teeth on disc 35 to locate the carriage which is released for movement by raising the finger 43. The carriage is stepped in either direction by pivoted pawls engaging ratchet wheels 45, 45<SP>1</SP> and actuated by spring keys 46, 461. The barrels may be cleared by a bail 57, a tilting bar 60 on which engages fingers 13 and restores them to zero. The barrels within each set act on their respective receivers simultaneously, but the pins on the five sets are offset so that each set cooperates with certain stationary parts while the other sets are out of action with these parts. The pointer 63 indicates the axial position of the carriage. Register.-This comprises wheels 65 rotatable on a shaft 66. Each carries on one side a gear 69 and on the other a one-tooth pinion 70. Zeroization is by sliding comb 73 and projections 71, 72. Locating detents 79 engage gears 82 meshing with gears 69 on wheels 65. The register wheels are operated from the barrels 10 through direct gearing and through fixed ratio clutches. A one-tooth pinion 89 on sleeve 21 drives the numeral wheels 84 of a revolutions counter RC. Pounds receiver gearing.-The driving pins 11 of pounds barrels L1-L10<SP>4</SP> drive gears 110 on shaft 111 through gears 103, 105, 107 and 108. The gears 110 mesh with gears 69 fixed to numeral wheels L1-L10<SP>4</SP>. When the barrel is shifted to the left, the wheels 103 mesh with gears 112 or 113 which drive wheels L10<SP>3</SP> to L10<SP>5</SP> through similar trains all having a ratio of 1:1 except L10<SP>9</SP> which is driven by a carry device on!y. When the carriage is moved two steps to the right, the barrels L1, L10 will be aligned with gears 114 meshing with gears 115, 116. Fixed to these are bigger gears 117 meshing in ratio 1:2 with gears 118 on shaft 109. These gears 118 are releasably connected to gears 108 to operate register wheels D1, S1. Free wheel devices are provided between gears 118, 108 which may be as described in Specification 535,705, but are preferably arranged as follows. Pivoted on disc 119 fixed to gear 118 is a double pawl 121 adapted to drive a ratchet wheel 122 secured to gear 108 in either direction when the disc 119 is driven and yet allow the wheel 122 to move freely when driven by wheel 108. In the remaining positions L10-<SP>3</SP>, L10<SP>-4</SP> the pounds barrels 10 operate instead of gears, other parts of the receiving mechanism. Shillings receiver gearing.-In the initial position, the barrels S10, S1 operate gears 112. These mesh with gears 126 on shaft 106 which mesh through gears 108, 110, 69 with register wheels S10, S1. In any position to the left, the barrels operate through gears 103, 113 as already described. In any position to the right they operate the pence wheels through gears 127-130, all with 1 : 1 ratio. Pence receiver gearing.-When shifted to the left the pence barrels operate gears 103 and associated trains. In initial and all right-hand positions they operate through gears 108 &c. All gears of pence receiver have 1 : 1 ratio. Clutch mechanism.-A spring 123 is arranged in a slot in disc 119 so as to engage a hole in pawl 121 and is secured to a bush 124 frictionally mounted on shaft 109. Prior to turning the barrels, the shaft 109 is caused to rotate in a direction opposite to that in which it is intended to turn the ratchet wheel 122. Owing to the friction of bush 124, the spring 123 swings the pawl 121 to engage ratchet 122 in the desired manner. The gears 103, 113, 112 are of varying width to allow for the different axial spacing of the shillings and pence barrels relatively to the pounds barrels. Selective control of clutch mechanism.-The pounds barrels operate the clutch mechanism only when the carriage has been moved to the right. When the L1 barrel is shifted one step it operates the S1 register wheel in ratio 1: 2 through direct gearing. When shifted two steps to the right, it operates the register wheel D1 in ratio 1 :2 and in addition its pins 11 operate a gear 173 meshing with a gear 175 on a shaft 176. Fixed to gear 175 is a gear 177 having twice as many teeth as gear 173. A rocker 178 pivoted on shaft 179 is spring pressed to engage gear 177. A downward extension of rocker 178 is adapted to engage a roller 182 on a slide rod 183 pivotally connected to an extension 185 of a stop lever 149, Fig. 6, similar to stop lever 148 associated with the D10-<SP>1</SP> wheel. When the gear 173 is stepped one-tooth in L10-<SP>2</SP> position, the gear 177 is shifted two teeth and the stop lever of D10-<SP>1</SP> clutch will be twice disengaged from its disc 148. On each occasion, the gear 134 will be rotated by the frictional drive 137 on shaft 135 and the register wheel 65 shifted through gears 132, 108, 110 and 69. As each impulse received by the stop lever results in two steps of wheel D 10-<SP>1</SP>, this wheel will be moved four steps. As the wheel D1 has been shifted two steps directly the total will be 2.4 pence. The shillings barrels drive wheels 65 directly in all positions and operate clutch mechanism in all positions to right and left of initial position. The pence barrels operate clutch mechanism only in the case of D10 barrel or when carriage is moved to the left. Each pence barrel has a cam 200 adapted to co-operate with rockers 201 on rod 179. Each rocker has a downward extension resting on bell-cranks 202, 203 pivoted at 204. The lower ends of bellcranks 202, 203 are maintained in contact with rockers 206, 207 pivoted at 208 in a rocking frame 209. The ends of rockers 206, 207 are bent downwards so that they are just above but not in alignment with stop levers 149, 160, 167. When the rockers 202, 203 are swung by cam 200 they cause rockers 206, 207 to pivot into alignment with the stop levers. In each axial position D10<SP>2</SP>-D10<SP>3</SP> of the pence barrels, there is provided a rocker and plunger 214 resting on the frame 209. Thus when operated by a pin 11, each plunger depresses the rocking frame, consequently, such rockers 206, 207 as have been shifted by cam rockers 201 and aligned with stop levers 149, 160 or 167 will actuate them and the clutches. The rockers 207 are longer than 206 and are in contact with each other through sideways extensions 215. Thus when a rocker 207 pivots clockwise, Fig. 6, all others to right will also be shifted. The lower ends of clutch forks 164 are arranged adjacent to the bent ends of rockers 207 thus all forks to the right will shift their members 161 from normal or right-hand position to left-hand and the gear ratio indicated to the left of the register wheel in Fig. 1 will be operative. Transfer mechanism.-One-tooth pinions 70 fixed to numeral wheels 65 mesh with gears 219 on shaft 220 in mesh with gears 221 secured to the setting cams 222 on carry barrels of the Ohdner type having pins 224. These are arranged in line with a gear 82 meshing with the register wheel of next higher denomination. The S10 wheel has to have five carries for each turn of the wheel. It therefore has a five tooth gear 701 which steps the setting cam 222 five steps during each turn of the wheel S10. A cam 229 fixed to each barrel 223 has a recess normally engaged by a spring stop lever 230 rockable on shaft 231 and controlled by a cam 232 fixed to shaft 233. During rota