Weighing but 45 pounds, compared with current field equipment that weighs 225 pounds, the new portable teletypewriter is but one-fourth the size of the old, has 300 fewer parts, is considerably stronger and consequently requires far less maintenance. The new equipment is capable of transmitting and receiving messages 66 per cent faster than existing types and will operate on both wire and radio circuits. It is waterproof and should it be used in amphibious operations, could be floated onto a beach. The development is the fruition of a 20-year-old project that did not get under way in earnest, however, until World War II was nearly over. Because of its light weight, the new teletypewriter can be used much closer to the front lines than has been the case. During World War II, teletyped messages could go only as far forward as a division headquarters. How much farther forward the new equipment can be used, will be determined in forthcoming field tests. The portable teletypewriter was developed by the Signal Corps Engineering Laboratories at Fort Monmouth, New Jersey, through a research and development contract with Kleinschmidt Laboratories, Incorporated, of Highland Park, Illinois. There are three components to a complete field unit: the teletypewriter itself, weighing 45 pounds; a power unit, and a case of accessories. The three together weigh 116 pounds. All units are waterproof, both to permit flotation in amphibious activities and to provide complete protection from weather. One man can carry the teletypewriter itself, while two men can carry all three units. The field teletypewriter in current use weighs 225 pounds and—if a vehicle is not available—requires four men to carry it. With power unit and accessories, present field equipment totals more than 400 pounds and requires seven men to carry it. While development work for the Signal Corps was progressing, Bernard kept busy managing general operations and Edward F. took hold in the general design and devised important features that were patented in his name. Bernard died in March, 1948. However, development work went along with the B. L. Kleinschmidt facilities until 1949, when a production order for 2,000 teleprinters, conforming to the now approved Kleinschmidt design, was to be placed. Now that Bernard was no longer there to take over business details, and as a certain amount of basic capital was needed to operate a production establishment, arrangements were made to transfer Bernard’s equipment to Kleinschmidt Laboratories which thereafter closed a contract to manufacture the required quantity of teleprinters now designated as the TT-4 telegraph typewriter.