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Equipment Used Afloat, Ashore Upright Drill--Tilting Press--Tube Boiler--Bending Brake Builds Heavy Pattern Head Drilling Machine To meet production requirements an upright drilling machine has been designed by the Sibley Machine Co., South Bend, Ind. Equipment includes interchangeable die-cast split bearings made from antifriction metal and a geared feed which has four changes of speed and a neutral position. The latter is governed by moving a knob on the center of the hand wheel in connection with a sliding spline, four feeds being provided for each spindle speed. The initial drive of the shaft is from the top cone shaft through bronze spur gears and_ two-to-one steel spirals. Hand speed and return of spindle is through the medium of STATIONARY HEAD DRILLING MACHINE WHICH HAS FOUR SPEED CHANGES AND A NEUTRAL POSITION a three-lever regulating device at the right of the feed box. Those parts dangerous to the operator are enclosed. The base is ribbed and braced with 'T-slots for clamping the work. In- -creased length of bearings on head and arms and sufficient table support aid 'in accurate work. The spindle is 'balanced by a weight supported inside -of the column and is operated by a chain drive. This has a ball thrust 'bearing. Back gears are of the sliding type. Lubrication is provided by immersing the gears in the lower feed box in an . 4 MOTOR 1S KEPT VERTICAL WHETHER PRESS IS UPRIGHT OR INCLINED oil. bath and enclosing them. The steel worm, which meshes with the gears, also runs in oil. Bearings are equipped with oil cups, grooves and channels, thus The loose pulley is self-oiling. At- tachments may be obtained, which in- clude positive geared tapping devices, geared or belted motor drive, round or square table with T-slots and oil pocket, oil pump outfit and quarter- turn countershaft. : Designs Tilting Press Operative in either an upright or an inclined position, the new press shown _in the accompanying illustrations pos- sesses several unique features. A turn of the hand wheel permits a change of position. The press is entirely self-con- tained, being driven by a direct-con- nected electric motor. The motor bracket is so arranged that it keeps the motor vertical whether the press is ver- tical or inclined to any angle within its limits. The pinion always is in mesh. The distance between the uprights, 24 inches, is somewhat greater than usual with presses of this size, the weight being 6500 pounds, 1050 pounds of which represents the flywheel. The slide, 21 inches from front to back and 19%4 inches from right to left, is of liberal proportions and is guided in sub- 671 insuring distribution. | stantial gibs to insure greater accuracy. The slide has a 2-inch stroke. The bed's area is 24 inches from front to back and 23 inches from right to left The bed has a 12x12-inch opening, with a bolster plate 3 inches thick. With the slide adjusted at maximum height, the distance from the slide to the press bed is 13 inches, with the slide at the bottom of its stroke. Some of these dimensions can be changed readily to suit special requirements. The press which recently was designed and is being built by the Toledo Ma- chine .& Tool Co., Toledo, Ohio, may be furnished with or without gearing and with or without the bar knockout. in the slide and the direct-connected lower liftout, as well as with or with- out the motor bracket. The press also is built with the frame arched out trom front to back and with a 14-inch opening in each housing to permit of feeding stock from right to left or vice versa. , Compass Is Ancient The mariner's. compass is said to have been known to the Chinese as early as 1115 B. C. It was brought to Europe by Marco Polo, A. D., 1260. Flavio Gioja, a navigator of Naples, is credited with having introduced the suspended needle in 1302. The compass' variation was discovered by Columbus | TURNING OF HAND WHEEL CHANGES POSITION FROM UPRIGHT TO INCLINED