PUNCHING MACHINES. Reduc ing Couplings for Punches.—Fig. 1 il lustrates a system of reducing couplings, manufactured by the Pratt & Whitney Co., by which punches of short lengths and small diameter can be adjusted to stocks made for larger punches. heretofore the changing of punches of large diameters for smaller ones has neces sitated the use of stocks of various sizes and lengths. With the use of the coupling, one stock will do for many lengths and diameters.
The distance from point of punch to coupling is the same, whether long, short, or regular coupling is used.
Multiple Punrh. —Mg. 2 shows a machine built by the Long &'stater Co., of Hamilton, 0., for punching long rows of holes at one stroke. The gang-punch and die can be quickly removed for changing. The cut shows machine set to punch a 5-ft. row of GO one-quarter inch holes through one-quarter-inch metal.
Automatic ,',.pacing Punch.—Fig. 3 shows an automatic trimmer, Leveler, spacer, and punch. made by the same company. It is designed to trim. bevel. space, and punch the holes in boiler and other plate work. The sheet is fastened to the table and fed past the tools, which trim and bevel the edge, and automatically space and punch the holes. The spacing is adjustable. The table has quick hand motion in addition to the power-feed motion.
•Combined Punch and 4 shows a horizontal beam punch combined with a straightener, also made by this company. The main driving shaft, acting through a bevel gear, drives the large horizontal wheel which through a cam shaft drives the sliding head, one end of which carries the punch, and the other a straightening block or die. The machine is de signed for bridge, girder, and general beam work, and will punch holes in 1 z in. plate and straighten 15-in, beams. The straightening die is ad justable while in motion.
Yn Itiple and I-Beam Puoch.—Fig. 5 shows a heavy multiple and I-beam punch made bythe Long & Allstatter Co., for punching, at one stroke, one or more holes in the flanges or two beams at once. It is designed for bridge and girder work, etc., and receives beams 12 to 20 in.
deep. It can be used for gen eral flat punching without removing the special die blocks.
Beaudry's Duplex Punch ing and Shearing Press.— Fig. 6 represents a press made by Alex. Beaudry. It h as two plungers on one crank shaft, so connected that either plunger may be worked inde pendently, or they may be run together, or either may be used as a shears or press or punch, while the other is in use for the same. or other pur poses.
The Eines & Jones Punch.—Fig. 7 represents a horizontal punch, made by Ililles & Jones Co., of Wil mington, Del. It has a deep throat or jaw that can be used for flanges as well as plain punching. The gearing and fly-wheel being below the top of the machine, leaves it per fectly clear, so that flanges, heads, or crooked furnace plates, as well as bent angle-iron, may be punched from either the inside or outside. This is a convenient tool for punching brace or stay-bolt holes in locomotive boilers. Plates that are already bent and fitted up can be taken down and every hole punched, thus saving the time spent in drilling or cutting holes by hand. The hand wheel is used for placing the center of the punch to the center mark on the work before throwing in the clutch ; in this way punching can he done as true and cor rectly as drilling. The stripper is adjustable for all thicknesses of iron.
Purifier : see heaters, Feed-water, Milling Machinery, Grain and Oil Purifiers. PURIFIERS, Grosrhe (f. Bigler Oil Purifier, shown in Fig. 1, is used for taking dirt out of oil after it has been used in lubricating ma chinery. The action of the purifier is based on the relative dif ference in the specific weight of oil and water. The oil is placed in the upper chamber and runs through the center tube, below the water, passes around the steam coil, and now being somewhat diluted by being warmed, will drop its impurities, and after ing once more down through cham ber, again up through chamber, once more through water, then through the discharge pipes, it will finally gather above the water-line ready for use.