Patent GB-190406547-A (GB)
Title: Improvements in Weighing Machines
Inventor: POTTIN HENRY
Filed: 1904-03-17
Granted: 1904-06-02
Abstract: 6547. Pottin, H., and LogeliÞre, L. M. de. March 17. Indicating and regist e r i n g mechanism; printing - d e v i c e s; pendulumweight apparatus; vibration, neutralizing. - Relates to a modification of the weighing - apparatus described in Specification No. 5922, A.D. 1 9 0 4, whereby a crank-handle allows the stop-device and printing-mechanism to be operated without any possibility of error. On pulling a handle 65, Fig. 3, outwards against the action of a spring 67, a cam 69 on the shaft 64 engages a roller 66 on a toothed segment 63, whereby the segment transmits motion by means of gearing 62, 61, 22, 21, 20, 19, 17, to a shaft 15, which moves to the left through a threaded bracket 13. A stop-wheel 16, connected to the shaft 15 by a torsion spring 111, carries a stud 77, Fig. 5, which meets a pawl 70 on the bracket 13, lowers it against the action of a spring 71, and passes over it, thus preventing the wheel 16 and the shaft 15 from returning to the right. The apparatus is now operated as follows :- The stop-wheel 16 and a stop-finger 12, Fig. 5 on a link 9 being in their initial left-hand positions, and a handle 101 being lowered, the platform is loaded. The handle 101 is now raised, releasing the platform by means of mechanism 102,103, 104, the rod 104 forming a hook which engages beneath the weigh-beam 7 of the machine. The load actuates a wheel 5 by means of a strap 6, raising a lever 2 and counterpoise 3, the oscillations of which are deadened, and equilibrium quickly produced, by means of an air cylinder 105, the piston of which is connected with the pivot 4. An arm 109 indicates the load on a scale 110, while the finger 12 has moved to the right a distance proportional to the load. On turning a handle 75, a lever 72 on the shaft 73 lowers the detent 70, thus releasing the star-wheel 16, which rotates to the right until one of its arms strikes the finger 12, owing to the pull of the spring 67 being transmitted through mechanism 63, 62, 61, 22, 21,20,19,17. At the same time, number-wheels 79, 80, 81, carrying on their peripheries figures formed of pins or points placed close together, have revolved proportionally to the movement of the star-wheel 16, and so register the weight. The wheels 79, 80 are rigid on the shaft 82 of the wheel 19, and indicate all numbers, by fives, between zero and ninety-five, while the wheel 81, bearing numbers one, two, &c. up to five or more, according to the capacity of the machine, indicates the hundreds, and is loose upon the shaft 82, being driven through one division, by means of gearing 79, 83, 84, 85, for each revolution of the wheels 79, 80. The rotation of the shaft 19 causes a shaft 94 to rotate rapidly, whereby rubber strips 92, loaded with weights 93 fly outwards, dragging a disc 96 against a spring or friction block 97. thus steadying the motion. This motion of the disc 96 releases a lever 98, which, oscillating under the action of a spring 99, engages an arm 100 on the shaft 64, preventing this from operating the printing-mechanism 79, 80, 81 When the gearing stops and the lever 98 resumes its first position, a strip of paper is introduced above the printing-wheels and the handle 65 is turned. In the first half-turn, a cam 90, acting on a lever 88, against the tension of a spring, causes the lowering of fingers 91 and an indiarubber roller 86, carried by a rocking shaft 87, the roller 86 causing the wheels 79, 80, 81 to perforate the paper strip. The cam 90 then releases the lever 88, and the spring tension lifts the roller 86 and fingers 91, these latter disconnecting the paper from the pin points on the wheels 79, 80, 81 and thus allowing its removal. In the second halfturn, a cam 69 actuates the segment 63 against the action of the spring 67, restoring the star-wheel 16 to its initial left-hand position, where it is locked by the pawl 70. The cam 69 then escapes the roller 66, leaving the machine ready to operate afresh after lowering the handle 101 and removing the load from the platform. A certain amount of vertical play is given to the link 9 by means of a slotted connection with the link 10, a spring on the link 9 pressing upwards against the lower end of the link 10.