Патент USA US2383321код для вставки
Aug. 21, 1945. J. o. KILEBER 2,383,321 ’ WEIGHING APPARATUS ADAPTED FOR OPERATION BY THE BLIND Filed March 2, 1944 - AUDIO~ ‘0 ,1. 2 I "3 4 PHOT0—ELECTR/C AMPL/F/ER/ CELL \20 IO00~ OSCILLA TO)? 500~ ‘ OSCILLA TOE k 75 / 74 WE/GH/NG 5y’ i SCALES INVENTOR. Linc/(SON 0. [Qt-551?. BY MMvHu-Z A T TORNEYS. 2,383,321 Patented Aug. 21, 1945, UNITED STATES PATENT 2,383,321 ‘OFFICE WEIGHING APPARATUS ADAPTED FOR‘ OPERATION BY THE BLIND ' Jackson 0: Kieber, Long Island City, N. Y. \ Application March 2, 1944, Serial No, 524,724 _ , 2 Claims. ("'01. 177-s11) This invention relates to weighing apparatus adapted for operation by the blind, or without ’ accurately whether the weight is approaching or exceeding the desired amount, or is correct. ' The use of high‘ and low notes respectively to the aid of sight. In the packaging of predetermined amounts of ' signify high or low weights, prevents any danger ' material or predetermined numbers oi small ar- < of confusion, mistake or misunderstanding of the ticles, it is often convenient to determine by weight the desired quantity to be placed in each package. signals, particularly when the weight is nearly Where the conditions are such that the packaging may be economically done manually, the operation is one which is well adapted to be performed by " the blind, except that so far as I am aware.v no weighing apparatus has heretofore been available in a form adapted to be rapidly and accurately used by the blind. , - correct and the signals are of. low intensity. Various further and more speci?c objects, fea tures and advantages will more clearly appear from the detailed description given below taken in connection with the accompanying drawing which forms a part of this speci?cation and illus trates somewhat schematically by way of exam ple, a preferred form of the invention. The in vention consists in such novel features, arrange ments and combinations of parts as may be shown and described in connection with the apparatus In accordance with the present invention I have solved this problem by providing a photoelectric, ‘cell and loud speaker arrangement accompany herein disclosed. ing the weighing balance or scales and adapted In the ?gure, weighing scales are schematically to sound high or low audible frequency signals respectively when the weight indicated by the 20 indicated at 5, having a pointer as at 6 for co operating with a graduated dial as at ‘I. These scales is higher or lower than the predetermined scales may be of any suitable known type or may desired value, the signals also if desired being of be in the form of weighing balances‘ having ' a loudness indicative of the degree of over or under weight. A With this arrangement it has been found that a blind person with very little practice is able to operate the weighing scales or balance in very rapid succession for accurately weighing prede weighing pans, etc. A shutter member as at 8 ‘may be aflixed to the pointer 6 for cooperating with light apertures as at 9, l0,_ these apertures being ?ooded by light as from lamp bulbs l I and i2. The lamp i I may be connected for example termined‘ quantities of material or eifectively 30 with a suitable source of power included within an oscillator i3 which is arranged to cause varia counting small articles to be packaged._ For ex tions in the lighting current, say at a frequency ample, the arrangement is being used by the blind of 1000 cycles per second. Similarly, the lamp in counting out predetermined numbers of phono I! may be connected to be lighted from another graph needles or the like, which are to be packaged ' oscillator i4 adjusted to cause variations in the in envelopes. In this operation the photoelectric - illumination of the lamp I! at a lower frequency, cell arrangement may be set to cause a relatively say of 500 cycles.v low audible frequency note to be sounded from The apertures 9 and i0 may be formed in a the loud speaker when the balance pan is empty. stationary plate or shield member as at IS, the Then as the needles or other articles are dropped position of which may be manually adjusted if on to the weighing pan, and as the number of 40 desired as by turning a knob l6 having threaded articles approaches the desired predetermined connection means as at I‘! with the member [5. number for one package, the signal may be ar An elongated photoelectric cell as at iii may be ranged to decrease in intensity, and thus give a suitably mounted above the shutter member 8 and warning just as the number of articles on the connected through an audio ampli?er is of known weighing pan is about to approach the predeter 45 type to a loud speaker 20. mined number for one packageful. When the In the operation of the arrangement the aper ‘ predetermined number is reached, the arrange ture plate or shield member I! is ?rst adjusted ment may be such as to give no signal, and when toia position such that shutter -8 will close both the number becomes excessive, then a relatively apertures 9 and to when the scales or balance higher audible note begins to sound with an in 50 pointer is indicating a predetermined desired weight. The drawing shows the parts in this tensity depending upon the amount or number in condition. vAt this time neither of the two oscil excess. Thus the psychological eii’ect of the low lator frequencies will be heard in-the loud speak and high frequency notes and the degree of in er, since the light from the two lamps will be tensity thereof when the weight is nearlycorrect, allows the blind person to gauge very quickly and 55 shielded by the shutter 8 from reaching the pho 2 2,888,821 toelectric cell. However, if the pointer indicates ‘ made without departing from the spirit and scope ‘ of the invention, and it is intended therefore in the appended claims to cover all such changes amount, than the variations from the lower audi and modifications.vv ~ ble frequency oscillator will be heard, since light What is claimed as new and desired to be se from lamp i2 will be impinging upon the photo cured by Letters Patent is: ' electric cell, It is apparent that the intensity 1. Weighing apparatus adapted for operation of the audible frequency note then heard will depend upon the proportion of the aperture it by the blind, comprising in combination, weigh ing scales having a movable member for indicat_ , which is uncovered by the shutter. Thus, as the aperture becomes nearly covered, viz., as the 10 ing the weight, alight shutter member carried by said indicating member, a relatively ?xed shut weight indicated closely approaches the desired ter member cooperating therewith, one of said predetermined amount, the intensity of the low shutter members having two apertures positioned frequency note will correspondingly diminish to be both covered by the other shutter member until no note is heard when the pointer indicates the predetermined desired amount. Then if a 15 when a predetermined weight is indicated, and to be alternatively uncovered respectively when a slight excess quantity of material is placed on the higher or lower weight is indicated, means for scales, aperture Q will be uncovered to a corre illuminating said apertures respectively with light sponding degree resulting in a 1000 cycle note in having relatively high and low frequency varia in the loud speaker due to the light from lamp ii. If a certain degree of tolerance is permissi 20 tions, and means responsive to such light passing a value lower than the predetermined desired ble above or below the desired predetermined weight, the shutter 8 may be lengthened corre spondlngly so as to prevent any audible note oi.’v through said apertures for providing audible sig either frequency, whenever the weight indicated in excess of or less than the desired predeter nals of corresponding high and low frequencies, whereby when the material on the scales weighs 25 mined weight, the higher or lower frequency‘ sig is within the tolerance limits. nals respectively will sound. The lamps H and 12 may be of a miniature 2. Weighing apparatus adapted for operation ?lament type. While the intensity of the light without the aid of sight, comprising in combina from the ?laments, due to inertia of the heat tion, weighing scales having a movable member ing and cooling effect therein will not vary di rectly in accordance with the oscillator current, 30 for indicating the weight, a light shutter member carried by said indicating member, a relatively yet there will be suillcient variation in the light ?xed shutter member cooperating therewith, one intensity and consequently in the photoelectric of said shutter members having two apertures cell current as to give a soft readily audible note positioned to be both substantially covered by the from the loud speaker at either of the two fre quencies. In using the scales steadily, such‘a 35 other shutter member when a predetermined weight is indicated, and to be alternatively un soft audible note is found desirable to avoid an covered to varying degrees corresponding to high noyance and mental iatigue. The blind person er or lower weights respectively, means for illu~ may quickly test the arrangement to determine minating said apertures respectively with light whether it is in operative condition, by applying pressure to the weighing pan su?icient to cause 40 having relatively high and low frequency varia tions, and means responsive to such light pass the pointer to move from the low weight region to ing through said apertures for providing audible the high position, and vice versa. signals of corresponding high and low frequen With very little practice it has been found that cies and of a volume generally corresponding to a blind person using the above described arrange ment is able to package small quantities or num 45 the extent that the apertures are uncovered, whereby when the material being weighed ex bers of articles at least as accurately and rapidly ceeds or is less than the desired predetermined as if the scale pointer were visible to the operator. amount, the high or low frequency signals reWhile the invention has been described in de spectively will sound with a loudness indicative tall with respect to a particular preferred example, it will be understood by those skilled in the 50 of the amount of the over or under weight, art after understanding the invention, that vari ous changes and further modi?cations may be JACKSON 0. KLEBER.