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SSS SSS Ship Timber Beveling and Forming Machine—Shipyard Crane—Steel Bending Brake ODERN, high-pressure de- M mands have brought about radical changes in’ wooden shipbuilding methods. Im the days of the New England tea clippers hand labor was depended upon almost ex- clusively in the yards on both sides of the Atlantic. Today, in wooden shipyards as in other industries, ma- chines are displacing human effort wherever possible. On the north Pacific coast, where wooden, shipbuilding is unusually active and_ exceptionally large timbers must be handled, a number of new machines have been developed in the past few months to perform operations heretofore exe- cuted more or less crudely by other methods. Prominent among the machines of this character is the new automatic shipbuilder’s planing, beveling © and edging. machine, developed by the Stetson-Ross Machine Works, Seattle. This company has been actively en- gaged in the manufacture of heavy- duty woodworking machinery for a number of years. Some of the fea- tures of the new planing, beveling and edging machine are shown in the ac- companying illustrations. The machine consists essentially of a beveling side-head, Fig. 1, a bevel- ing top-head, Fig. 2, and a roller table for handling the material. The ma- chine may be driven by an individual motor or it may be connected to an existing system of line shafting. The 20-inch beveling side-head is shown in Fig. 2 arranged for faying For this operation, a small knees. FIG. ‘fitted with an 1—BEVELING SIDE-HEAD ARRANGED FOR FAYING KNEES FIG. platform is placed on the carriage and a batten is nailed on the knee in the same manner as when working ceiling or planking. The side-head, which is mounted in a heavy yoke, is equipped with a countershaft provided with an automatic belt tightener. A 7-inch belt is used. This head may be tilted 30 degrees to the right and 20 degrees to the left, and set in an exact’ position by means of a gradu- ated scale. Most of the bevels used in wooden shipbuilding do not ex- ceed 10 degrees. The side-head is adjustable guiding collar that governs the depth of the cut. This ‘head is used for beveling ceiling, forecastle deck beams _ and planking, including caulking seams, for faying knees and rounding the edges of waterways, main rails, pin rails, etc. : The 48-inch top beveling head may be tilted 15 degrees either way. It may be raised and lowered by power and set by means of a dial that shows thicknesses to sixty-fourths. The roller table or bed is 80 feet long. When motor driven, a 50-horsepower motor is required. The machine weighs 20,000 pounds. When working ceiling and planking, it is said the machine will displace 18 carpenters on the skids, the net labor saving alone amounting to over $85 per day. Knees usually are fayed in lots of 10 to 12, first on one side and then on the other, the whole operation requiring only 15 minutes. In bevel- ing ceiling or planking, a complete 261 2—BEVELING TOP-HEAD SWUNG TO ONE SIDE. strake can be laid: out at one time and the battens nailed on each tim- ber. The timbers are then placed on roller skids alongside the machine, from which position they may be easily placed on the roller table and run under the knives. New Shipyard Crane A 12%-ton crane specially adapted for service in shipyards has just been de- signed by the Wellman-Seaver Morgan Co., Cleveland. The crane is of the traveling hammerhead type and, as shown in the accompanying illustration, can be built for either a 95-foot or 2 105-foot lift. The crane has a capacity for hoisting and slewing a load of 12% tons at a maximum radius of 52 feet and 5 tons at a maximum radius of 90 feet. A 121%%4-ton weight can: be hoisted at a speed of 35 feet a minute; a 5-ton weight at .80. feet per minute. The bridge and trolley can travel at 150 feet per minute. The maximum radius of the hook from the center of the tower is 90 feet; the minimum, 14 feet. The overall height is 121 feet 9 inches for cranes built for a 95-foot lift, and 131 feet 9 inches for a 105-foot lift. The entire boom is mounted on wheels which rotate on a circular track. <A heavy center pin carried by cross girders on both the tower and the boom, main- tains the proper relation between the stationary and rotating parts. Two motors are provided for driving the track wheels, each motor being con-