US2094944A - Exhibiting means for weighing scales - Google Patents

Description

Oct. 5, l937. s. EGGER-HANSEN v EXHIBITING MEANS FOR WEIGHING SCALES 2 Sheets-Sheet 1 as t/- Filed Oct. 11, 1934 Oct. 5, 1937. s. EGG ER-HANSEN A 2,094,944

EXHIBITING MEANS FOR WEIGHING SCALES Filed Oct. 11, 1934 2 Sheets-Sheet 2 INV TDR Patented Oct. 5, 1937 EXHIBITING MEANS FOR WEIGHING SCALES Siegfried Egger-Hansen, Vienna, Austria Application October 11, 1934, Serial No. 747,965 In Austria March 23, 1934 1 Claim.

This invention relates to improvements in means for exhibiting a section of a cost chart in weighing scales and comprises a case, two windows arranged at the same height in opposite walls of said case, a top winding roller mounted in said case nearer to one of its walls, a bottom winding roller mounted in said case nearer to the other wall of said case so that both guide rollers are disposed diagonally in said case, a bottom guide roller mounted in said case nearer to one of its walls below said top winding roller, a top guide roller mounted in said case nearer to the other wall of said case so that both guide rollers are disposed diagonally in said case, a cost chart band passing from said top guide roller directly to said bottom winding roller and from said bottom guide roller directly to said top winding roller in the form of an N, a gear accorded to each winding roller, and a tensioning spring interposed between the gears, one end of said spring being connected to one of said gears while the other end of the spring is connected to the other gear so that the spring has the tendency to turn the gears and thus the winding rollers in opposite directions of rotation so as to place said chart band continuously and automatically in tension.

Some modes of carrying out the present in- .vention are illustrated by way of example on the accompanying sheets of drawings in which Fig. 1 is a front view of the weighing scale, while Figs. 2 and 3 show the driving mechanism with the band-guidance in front view and cross section respectively. Figs. 4 and 5 are views of a detail from the mechanism shown in Fig. 2 on an enlarged scale. Fig. 6 shows a part of a price computing chart band based on the decimal system, while Figs. 7 and 8 are like views but based on the principle of British and U. S. weights and currencies respectively.

The case I which, when altering existing weighing scales, is fitted in place of the old case, is of like shape at its front side and back side and at both sides is provided with windows 4, each furnished with a weight chart '6 at its bottom edge. The individual price computing charts 5 for the different basic prices 1 (for instance 4 shillings and groschen) extend in a curve across a long band 2 in accordance with the weight chart, the ends of said band being secured to two Winding rollers 9, Ill. The fixed weight chart 5 is disposed some distance in front of the band 2, so as to form a gap in which plays the end of the pointer 8 and, with the smallest parallax, indicates simultaneously the weight and the price. According to the invention, the two winding rollers 9 and ID as well as the guide rollers l I, I2 are arranged in such a manner, that the band is led in the form of an N. In view thereof the areas of the band, which appear in the windows 4, are parallel and oppositely disposed at the same height, so that the price computing charts can be of exactly the same measurements at both sides of the band. In order to enable on the price computing chart the applica- 0 tion of, the corresponding figures for all lines of division of the weight chart, the designation is, for instance for the price of 1 shilling and 63 groschen as shown in Fig. 6, carried out in such a manner that the statement of the lower unit 15 of currency, thus the 63 groschen, is disposed underneath of the statement of the higher unit of currency, thus 1 shilling. In order to save space, the statements of the lower units of currency are displaced, so that the statements are arranged in a zigzag line. In this way the reading is rendered more simple.

In order to facilitate the setting of the desired price computing chart, the band provided with the price computing charts is furnished along its length with a reading line l3, which is known per se and of striking colour, for instance red, and which is fixed to the price computing chart band preferably by means of a transparent tape. According to the invention, the line I3 is arranged on the band 2 in such a manner, that it transects the fixed weight chart 6 at the line of division, which, for the statement of the price, indicates the basic price of the visible price computing chart. The line [3 may be curved or straight, continuous or stepped according to the price computing chart groups (see Figs. 6, 7 and 8).

According to the invention, the price computing charts of several pounds-or kilogrammes ranges, forming the base of a common basic price, are arranged on the same side of the price computing chart band 2 directly above one another and they are adjustable simultaneously in the suitably sized window 4 of the weighing scale. The pointer of the weight chart 6 is, in known manner, provided with a number of pointed ends 8 which swing around the same pivot, for indicating directly the price in question at the time according to the number of charts appearing in the window.

The arrangement shown in Figs. 2 and 3 serves for continuously placing in tension the band provided with the price computing chart, Without arresting the rollers. Two toothed wheels are mounted on the shaft of the crank l4, one toothed wheel I5 being fixed, while the other toothed wheel I6 is freely rotatable. A coiled spring I'I connects the toothed wheel I6 with the toothed wh'eel I5 in such a manner, that it can rotate with respect to the toothed wheel I5 at the elastic tension of the suitably tensioned spring and that it is taken along by said wheel I5 in accordance with the moment of rotation of the prevailing spring-tension. Also the toothed wheel I6 may be fixed, while the toothed wheel I5 is subjected to the action of the spring. The toothed wheel I5 meshes with a toothed wheel l8, keyed to the shaft of the roller 9 while, by way of an intermediate wheel I9, the toothed wheel It drives the toothed wheel 20 and thus the roller ID. The intermediate wheel 59 serves for rotating the rollers in opposite directions, in order to wind up the band 2 on one roller and to wind ofi the same from the other roller. The tensioned spring I! not only stretches the band 2 but it also subjects the toothed Wheels to a pressure for immediately braking the toothed gear in order to immediately stop the rollers 9 and I0.

In price computing weighing scales with the price computing chart printed at one side of the band only, the backside of the latter may carry advertisements, which are suited to the price computing charts and are visible in a window of the scale facing the customer and further are adjusted in the window together with the price computing charts. For this object, the price computing chart band may consist of two strips, one of which carries the price computing chart, while the other strip is provided with the advertisements. In view of this construction of the price computing chart band it is possible to accord a certain advertisement to a basic price, which appears in the window facing the customer when setting the basic price. It is of particular advantage to illustrate by advertisement the goods covered by the basic price.

One or more electric lamps which illuminate the charts but are covered so as to shade the eyes are arranged at the edge of the window, in order to provide for a good inspection of the price computing charts. These lamps are arranged at the outside of the case and are operated either by a hand-operated switch or by a switch, which is operated by the scale for the time of weighing. A locking arrangement, which is positively con nected with the driving mechanism of the winding rollers and is adjustable to the length of the band necessary at the time, serves for positively preventing any damage to the band, whenever the same reaches one of its end positions. This looking arrangement is shown in Figs. 4 and 5 of the drawings and consists of a nut 23, which acts on the screw-threaded part of the driving shaft 22 and acts as looking member and is secured against rotation by a fixed guide-pin 24. The axial range of movement of the nut 23 is limited on the one hand by a sleeve of the case and on the other hand by an adjustable sleeve 26 of the boss of the crank Ifi, and the said range of movement may be adapted to the length of the band by axially adjusting the sleeve 26. The nut 23 consists of the screw-threaded part and of a tensioning part, which engage the pin 24; the outwardly flexible limbs of said tensioning part being tied together by a screw 21, so that the screw-threaded part engages the thread of the screw shaft 22. In View of this construction of the nut 23 it is possible to wind up the band on the winding rollers if the nut is disengaged and to adjust the length of the band with respect to the locking device, While in the engaged condition of the nut, e. g. if the threads of the nut and of the screw shaft are in mesh, the band is fixed in the end positions.

Having now particularly described and ascertained the nature of my said invention and in What manner the same is to be performed, I declare that what I claim is:-

Means for exhibiting a section of a cost chart in Weighing scales comprising in combination a case, two windows arranged at the same height in opposite walls of said case, a top winding roller mounted in said case nearer to one of its walls, a bottom winding roller mounted in said case nearer to the other wall of said case so that both rollers are disposed diagonally in said case, a bottom guide roller mounted in said case nearer to one of its walls below said top winding roller, a top guide roller mounted in said case nearer to the other wall of said case so that both guide rollers are disposed diagonally in said case, a cost chart band passing from said top guide roller directly to said bottom winding roller and from said bottom guide roller directly to said top winding roller in the form of an N, a gear accorded to each winding roller, and a tensioning spring interposed between the gears, one end of said spring being connected to one of said gears while the other end of the spring is connected to the other gear so that the spring has the tendency to turn the gears and thus the winding rollers in opposite directions of rotation so as to place said chart band continuously and automatically in tension.

SIEGFRIED EGGER-HANSEN.

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