Patent GB-190318735-A (GB)
Title: Improvements in and relating to Weighing Apparatus.
Inventor: DEES MARK ASHLEY
Filed: 1903-08-31
Granted: 1903-12-17
Abstract: 18,735. Dees, M. A. Aug. 31. Compound-lever apparatus; steelyard apparatus; indicating and registering mechanism; price and value, indicating; weights.-Weighing-apparatus is described in which the adjustment of a poise upon a scale-beam automatically brings a scale of prices against the proper set of figures upon a multiplication or value table arranged on a ribbed cylinder, the value being then found, by inspection, against the price of the article. The apparatus is described for a decimal monetary system. The box-like base a, Fig. 4, contains the usual system of compound levers carrying the lower platform c, and connected by a rod k with the upper tilting-frame g, which is supported on knife-edges f, Fig. 2, held in aligned slots in the forked ends 21 of the framework d, and, besides supporting the upper platform on knife-edgeh, has attached to it the computing - cylinder n with scale-beam p, main scale-beam 31, and tare-beam 83. The poise q, slidable along the beam p, has a finger s engaging with the poise r, but not obstructing its rotation with the cylinder n when the milled wheel 41 is turned. The sides of the longitudinal ribs 6 on the cylinder, and the surfaces of the cylinder between them, bear numbers representing the value of articles weighed, each being the product of the reading on the scale-beam p and the price-number on the poise r. There are three parallel series of these numbers 13, 14, 15 around the circumference and ribs of the poise r, the members being in inverse ratio to those of the three upper scales on the beam p, with which they are employed. The three scales are for use either with the compound poise q, r, alone, or when it is combined with one of two auxiliary weights normally kept at the zero end of the tiltframe. The fourth scale represents quarters of the pound-graduations of the third. When the main beam is employed, the poise 51 is adjusted, by means of a rod 61 attached to a rack 60, half the length of the beam, and moved by one of two spur-wheels 59 on parallel axes 55, deriving motion from the shaft 52, on the exterior of which is a milled head 53. Spur-wheels transmit a reduced motion to the milled head 65 and the spindle of a cylinder 63, which is a larger weight and price multiplier, having transverse ribs 68 and intervening flat rings, all kept from independent rotation by the feather 67<a>. The values are tabulated on the rings and ribs, and the weightarguments given at the centre move with the cylinder, the price arguments being on the fixed scales 78, 73 against the edges of which readings are taken. These scales are made up of pieces, Figs. 6 and 7, having three surfaces at right-angles with prices on the flat surface 75 and upstanding surface 77. The weight scale 8 up to six pounds is used with the poise 51, and the duplicate scale from six to twelve pounds with the two poises 51, 64, readings being taken on the left half of the cylinder. The twelve to eighteen pounds scale, and the right half of the cylinder, are used only when the tare.poise 84 is at the extreme end of its beam 83. In all cases, if the article to be weighed is placed on the lower platform, the values obtained have to be multiplied by 10. A key 82 on the second poise 64 can project through a hole in the main poise 51, and if then turned, will lock the two together. Fig. 10 shows lugs 85, 86 on the poises q, 51, to receive the outer ends of rods 87, 88, pivoted to cross-levers of which the upper one, 89, is shown. The cross-levers are spring-connected, so as to move a bar 90 or 92 in front of, and lock, one poise in the inactive position when the other is in use. A rod x checks the tilting of the upper platform. A modification is described in which the valve cylinder n only is employed, in conjunction with the scale-beam p, poises q, r, auxiliary weights, and a graduated tare-beam. A plumbline is provided for setting the apparatus horizontal, and the ribs on the valve cylinder are of angle-iron shape and bolted thereto. Part of a third modification is shown in Fig. 20, wherein a single poise q<1> with sliding part r is used either alone or combined with a poise nine times its weight, means for connecting the two being provided. The weight-scale z, which may represent dimes, and shows units and quarters with tenths over a small range, is repeated on the valve cylinder at x, by the side of a ten-times-greater scale y, which may represent cents. The value numbers have their unit digits in red, and there is a row of ciphers on the poise r, whereby transformations in a decimal system are facilitated.