Like the first steam engine, telephone or automobile, the first addressograph was crudely simple and of course presented an uncouth mechanical appearance. Mr. Duncan experimented by gluing the rubber portion of a number of hand stamps to a wooden drum. This drum was placed on an operating shaft in the addressograph, so that after the printing of one name and address, the drum revolved so that the next name and address came into printing position. The type impressions thus obtained were fairly readable. But Mr. Duncan soon realized that the idea of gluing the type permanently to a wooden drum was unpractical. Only a few addresses could be placed around the drum and the method of gluing them permanently into place made it practically impossible to make corrections when changes in address occurred, or to add new names as occasion demanded. [Illustration: THE FIRST ADDRESSOGRAPH] Greater flexibility was needed. So Mr. Duncan designed and built what is now known as the first chain addressograph. Individual rubber type characters were pushed into metal type holders with a pair of tweezers. These type holders were then ingeniously linked together in the form of an endless chain. These chains were placed over a revolving metal drum, and as each separate name and address came to the printing point of the addressograph, the operator pushed down on a vertical stamper rod which pushed the envelope, or whatever form was to be addressed, against the rubber type which was inked just before reaching the printing point. Here, at last, was a practical addressing machine which enabled the user to accurately print names and addresses--typewriter style--ten times faster than was possible by any other method, and, quite as important, to make changes and additions to the list. The Beginning of a Great Industry. By this time, Mr. Duncan had moved his base of operations from Iowa to Chicago. So well was his first practical model of the addressograph received by Chicago business men that he sold the first half-dozen manufactured within a short time. Enthused with his success, Mr. Duncan decided to enter into the manufacture and sale of addressographs on as extensive a basis as the demand for his invention warranted. But to do this it was necessary for him to secure more capital. Consequently, he interested Mr. J. B. Hall--a Chicago business man--in his project, and in January, 1896, Mr. Duncan and Mr. Hall formed a partnership and called it the “Addressograph Company.”