Patent GB-190405922-A (GB)
Title: Improvements in Weighing Machines
Inventor: POTTIN HENRY
Filed: 1904-03-10
Granted: 1904-05-19
Abstract: 5922. Pottin, H., and LogeliÞre, L. M. de. July 1, A.D. 1903, [date applied for under Patents Act, A.D. 1901]. Indicating a n d registering mechanism; printing - devices; pendulum-weight apparatus. - Consists in a registering weighing-machine in which the registering-mechanism is independent of, and actuated independently of, the weighing- machine proper. When a platform 8, Fig. 1, is loaded, a lever 7 and strap 6, Figs. 1 and 2, rotate a wheel 5, until equilibrium is established by the movement of a counterpoise 3 out of the vertical, or by a spring. This movement causes a finger 12 on a lever 9 to be displaced horizontally through a distance proportional to the displacement of the poise 3, i.e., to the weight of the load. A lever 24 is now depressed, thus driving a drum 22, which causes a screwed shaft 15 to move to the right through a threaded bearing 13, by means of the gearing 21, 20, 19, 17. A fixed star-wheel 16, with say ten arms, is thus rotated until the helical motion of its arms is stopped by one of them contacting with the finger 12. This motion of the shaft 15, which is proportional to the displacement of the finger 12 and so to the load on the platform, causes number wheels 28, 30, 31 to rotate the required amount, the units wheel 28 being connected to the pinion 17 and driving the tens and hundreds wheels 30, 31 in the usual way. The wheels 30, 31 are loose upon a sleeve 33, through which a slotted part 18 of the spindle 15 slides freely. A shaft 41 is now turned by hand, a cam 42 thus actuating a lever 43 and a frame pivoted at 36. A paper band 40 carried over rollers 37, 38, 39 is thus pressed upon the number wheels, and the weighing recorded, the numbers upon the wheels being formed of perforating-pins for this purpose. Another cam 44 actuates a lever 45 carrying a pawl 46, so that, after each record is made, the band 40 is moved forward a certain distance through the pawl engaging a ratchetwheel 47 on the roller 39. Separate sheets, such as baggage notes, may be introduced through an opening 50 to receive a record of the weighing at the same time that the band 40 is perforated. The arms of the star-wheel 16, and the finger 12, have inclined faces and sharp edges 51, 52, Fig. 5, while a small projection or heel 53 on the finger renders the stoppage of the star-wheel against the finger exact. Inclined lateral faces 54, 55 on the starwheel and finger respectively facilitate the disengagement of the finger and wheel. The finger 12 may be mounted upon the rod 9 with a certain amount of horizontal play to facilitate this disengagement. An additional number wheel 56, turned by hand, may be used to record the number of weighings, whilst a fly-governor 57 checks the speed of rotation of the shaft 15. If desired, the actuating-mechanism of the star-wheel and number wheels may consist, for example, of a cam shaft operated by a crank - handle, successively causing the advancement of the star-wheel, the perforation of the band, the advancement of the latter, and the return of the star-wheel to its initial position. The star-wheel may have a single tooth, or any number, according to the size of the screw-thread on the shaft 15 and the degree of approximation required in weighing.