Show UNCLE SAM SEEKS STAMP VENDER hlll the time ever cone when uncle sam can with letter cair ers the increasing use of the ie the pneumatic tube and me ch anical devices in the postal service wo id andl cate that eventually some method of delivering mail will found which will n a large measure do away with the present system of d strib ution the ice department has an annual ampro which ib used to experiment with ical devices and aery year the officials are called upon to investigate inesti gate the practical ab 1 ty and util ty of invent ons there have been hundreds of differ ent astles of mail boxes submitted aid there is no end of devices designed for picking up mail bags by fast mo ing express trains tl ere is no doubt 10 experts sa that the stamp fixing ma chine will come into general use and they are equally certain that the government will adopt slot machines for the automatic sale of postage stamps as germany and numerous other foreign countries have lie department has made an boffl cial trial of such machines A little more than a year ago the postmaster general appo anted a special committee of officials to make a thorough investigation of the stamp vending machines agton is now bavli g its extended public demonstration of these machines and other cities also will t ave a chance to try them for a long period ader the direct sion of the lice authorities when the postmaster general decided to make experiments with stamp selling machines be in cited all persons with inventive tendencies to sub mit models he did not confine the invitation to america the result was thit some 75 machines were offered tor experiment and the postoffice post office committee had a long and tedious task in selecting those that appeared to be practical after much investigation the committee selected a half dozen machines tor further test to the owners or inventors of these six makes tas given the opportunity to make public tests of the ven ders under the direction of the department but at their own expense finelly three different models were picked out for an extended public test at go eminent expense two of these machines mac nines are foreign invention one a german machine and the other the invention of an australian |