Patent GB-340230-A (GB)
Abstract: 340,230. Calculating-apparatus. SOKAL, S., 1, Gt. James Street, Bedford Row, London.-(Aktiebolaget Original-Odhner; 1, Anasvagen, Gothenburg, Sweden.) July 23, 1929, No. 22601. [Class 106 (i).] Selecting denomination; displaying items.-In a single bank independently-operated machine, the stepwise movable denomination selector has a number of separate indicators by means of which the numbers set on the machine can be read off, each indicator being controlled by a juxtaposed slotted plate. The selector carriage 16 runs on guided rollers 160 and is provided with stops 19, Figs. 3 and 12, arranged in denominational rows and having retaining springs 21. The depression of a key 1 raises a corresponding stop 19 by means of levers 4, 4<1>. The selector is urged to move to the left by a spring 11 and a lever 57, Fig. 5, the movement normally being prevented by a pawl 10 engaging a rack 9 attached to the selector. The depression of a key raises a universal bar 7 and lifts the pawl 10 out of engagement with the rack 9, movement of the selector being prevented, until the key is released, by a second pawl 8. A rod 28 of the selector carries the indicating sectors 30, Fig. 3, which are urged to rotate clockwise by a spring 36, but which are normally prevented from so doing by a bar 37, Fig. 14. Each sector is connected by a pin 35 and slot 136 to a plate 29 so guided by slots embracing rods 27, 28 fixed to the selector carriage that a projection 32 of the plate 29 moves in a horizontal plane. When the selector is stepped to the left, the first sector 30 is released and moves until the projection 32 strikes the stop 19 which has been raised by the depression of a key 1, the corresponding numeral then being indicated at an opening 38. Differential mechanism. - The totalizer consists of toothed wheels 65 carried by a frame pivoted about a shaft 69. Opposite each wheel 65 is a toothed segment 70 rotatably mounted on a shaft 71 and having an extension 72 pivoted to the centre of a lever 73. The upper end of this lever 73 is constrained to move in a vertical guideway 100 the centreline of which is in a vertical plane through the axis of the shaft 71. The lower end of the lever 73 is pivoted to a rod 77 guided in a beam 78 to move in a horizontal plane through the axis of the shaft 71 and adapted to abut against any raised stop on the selector carriage. Secured to the operating shaft 44 which when actuated is given a reciprocating movement is a disc 207, Fig. 17, having an extension 210 connected by a spring 211 to a strap 209 secured to a cam 80 rotatable on the hub of the disc 207. During the first movement of the handle, the member 210 is moved to the right, causing the cam 80 to follow by reason of the yieldable spring connection 211, 209. A universal strap 79 is connected to each segment 70 by a spring 81, the strap hub carrying arms having a cam-follower 214 and a spring 216. Rotation of the cam 80 thus causes the segments 70 to rise until the corresponding rods 77 abut against the set stops of the selector. Restoring parts to normal. During the first or forward stroke of the operating handle 142, a cam 43, Fig. 10, rocks a lever 41 carrying a bar 40 which then bears against all the plates 29 and resets the segments 30, the bar being kept in its operative position until the end of the return stroke by a catch 48 engaging a pin 203 and being subsequently released therefrom by a pin 49 secured to the cam 43. The selector carriage is restored by a lever 54 having a notch 55 which can engage a roller 56 on the lever 57, the lever 54 being operated by a cam 51 on the shaft 44. The first handle stroke (forwards in Fig. 5) moves the lever 54 to the left and, by reason of a roller 61 thereon running down a guide 62, brings the notch 55 behind the roller 56. The return handle stroke moves the lever 54 to the right, resetting the selector and finally raising the notch 55 clear of the roller 56 by means of the roller 61 and guide 62. The stops 19 are reset by a curved bar (not shown) during the return motion of the selector carriage. Correcting errors. Since the first part of the movement of the handle restores the indicating sectors 30 and the last part returns the selector to its initial position, a small movement of the handle will enable an incorrect setting to be removed without disturbing the totalizer.