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$4 Mook oR ot OU E, THE GUNNELL PNEUMATIC FORGE The pneumatic forge designed and built by the Gunnell Tool -Co. of Manitowoc, Wis., is in portability and efficiency in- tended as a useful ad- junct to pneumatic riv- eters, though as will be seen it has all the re- quirements for a wider field. The hollow cylin- der above the fire holds the fuel, as in the famil- iar base burner, and the fuel is fed to the fire in a highly heated condition. The cylinder and funnel arrangement from which the air hose is led forms an efficient draft inducer and a steady and easily regulated air supply is maintained. The upper part of the forge is piv- ~oted and the workman can readily reach any rivet by rotating the pan. This last is a considera- ae ema ble convenience' and THE GUNNELL PNEUMATIC FORGE. saves time in traveling around the fire and at the same time presents the rivet han- dily. "The forge weighs only 50 lbs. and will heat twenty rivets at a time. The manufacturers claim that the heating capacity is easily 200 rivets per hour and the forge requires but 2 cu. ft. of air per minute. TRADE NOTES The Hohmann & Maurer Mfg. Co., Rochester, N. Y., had an imposing exhibition of thermometers at the recent Can- ners' convention in Columbus. They were represented by Herbert J. Milker, 119 Lake street, Chicago. Termaat & Monahan Co., Oshkosh, Wis., have just issued a beautiful catalogue devoted to two and four-cycle marine engines. The catalogue is clear and comprehensive and ex- plains the various points of these marine engines. To any- one desiring an engine for a launch this catalogue contains most invaluable descriptive matter and is well worth writing for. The Electro Dynamic Co., Bayonne, N. J., has just put out some bulletins in relation to inter-pole, variable speed motors. In reference to this motor the manufacturers say that it can be set to run at any speed between 275 and 1,400 revolutions per minute and will maintain this set speed without perceptible variation whether operating under no load or full load. The bulletins are descriptive of the motor in detail and are well worth writing for. The Chicago Pneumatic Tool Co., Fisher building, Chicago, advise their customers that they have taken over the control of the Chicago Storage Battery Co. with the factory located at 1255 Michigan avenue, Chicago, and in addition to manu- facturing a full line of compressors and pneumatic tools and appliances they are now in position to furnish the Duntley air-cooled electric drills, and also storage batteries for every purpose for which storage batteries are adaptable. The Watson Mfg. Co. of Jamestown, N. Y., has recently been allowed a patent on a very meritorious all metal window screen composed entirely of non-rustable material. The screen works on the same principle as the wooden frame screens, which the firm has been manufacturing and will continue to manufacture. In high grade modern buildings a screen better he oy 1 Fo Ow than those of wood frames has long been demanded and this need the Watson screen is designed to fill adequately. The screen has several features of advantage, briefly as follows: It is comparatively light in weight, the wire cloth is very smoothly and tightly stretched, lifts are convenient and incon- spicuous. In case of breakage of springs, which is a common fault with many screens, the spring used in the Watson screen can be removed and replaced without the use of tools. Strength and durability are prominent features and one has only to compare it with others now in use to become aware of its superiority in all points. This company is already well known throughout the country for its meritorious productions of wood screens and sliding and venetian blinds. From the demonstrable advantages of the new metal screen, together with the full line of other work produced by this company, its representatives will have a very superior and complete line. Agencies will be placed in all principal cities where the com- pany is not already represented. One of the most difficult problems ever presented in con- nection with ship building has been that of manufacturing a successful paint to protect the submerged bottoms of iron vessels. Rust is a natural enemy of iron, and salt water in- creases its enmity to a very great extent, so that the making of a paint that will remain hard under water, possess tenacity enough to contend against the incessant friction, and thus check the ravages of rust, is no easy matter. After the ap- plications of such an anti-corrosive paint comes the difficulty of producing an anti-fouling paint for the second coat. This, it is conceded, must be poisonous in nature, but without harm- ing either the under coat or the iron. Equally difficult with these problems is that of manufacturing an anti-fouling com- position to protect the bottom of wooden vessels. Many poisonous ingredients were tried from time to time, until some years ago copper oxide began to gain favor and today it is generally used. If properly manufactured it gives the re- sults desired, but out of the many manufactured copper paints only a few have obtained any degree of success. Marine paint production has become a specialty in the paint line, and to- day one of the largest and most successful producers is the New Jersey Paint Works (Harry Louderbough, proprietor), Jersey City, N. J., whose productions are now sold all over the world. In their foreign introduction labels in seven for- eign languages are used. SHIP BUILDING DURING JANUARY The bureau of navigation reports thirty-four sail and steam vessels of 7,396 gross tons were built in the United States and officially numbered during the month of January, 1905, as follows: Wood. Steel. Total. Districts. Sail. Steam. Steam. oes No.| Gross. | No.| Gross. |No.| Gross.||No.| Gross. Atlantic & Gulf 3.3 8 3,302 | 7 834 | 381} 3,180 || 18 6 766 POrCO RICO eee A ae es ame ea ree SSN ; Pacific. 3 see. ORE EP Gae 4 BOR a Sake aes 4 207 Hawalls 2.207, Pee MG ans A Seana ua coltare aie oust rae oem Leela /[ Re Ova ain Trees orev ER Great Wakess. Sree Pa ee ee dl Does 1 11 Weestetn Rivers: shies 11 AUDEN et [ogo ii 412 Total ce iret : 8| 3,302|23| 964) 8) 3.130 || 34| 7,396 Henry S. Manning has sold to his partner Charles A. Moore his entire interest in the firm of Manning, Maxwell & Moore and in the various manufacturing concerns owned and con- trolled by the firm as follows: The Ashcroft Manufacturing Co., Bridgeport, Conn.; the Consolidated Safety Valve Co., Bridgeport; the Hancock Inspirator Co., Boston, Mass.; the Hayden & Derby Manufacturing Co., Boston, and the United Injector Co., Boston. This dissolution ends a partnership of twenty-five years.