. American engineer . forcing the water into the AMERICAN ENGINEER. \uL. 87, No. 5. cylinder and lifting ihe ram. .^s soon as the load becomes toogreat for this pressure, the air is by-passed into the air engine,which in turn lifts the ram. In the jack illustrated the ram raises at the rate of lYi min., whereas only 2 in. per min. is attainable with a hand X^gggggl^Kk g_ \ 1* _^. Hydraulic Jack for Use in Drop Pits. power pump. It has a lifting capacity of 10 tons anilift of 103 in. The ram is telescopic in two lengths, 4in diameter, respectively. 1 a totalind 5 in. HEAVY ENGINE LATHE &
. American engineer . forcing the water into the AMERICAN ENGINEER. \uL. 87, No. 5. cylinder and lifting ihe ram. .^s soon as the load becomes toogreat for this pressure, the air is by-passed into the air engine,which in turn lifts the ram. In the jack illustrated the ram raises at the rate of lYi min., whereas only 2 in. per min. is attainable with a hand X^gggggl^Kk g_ \ 1* _^. Hydraulic Jack for Use in Drop Pits. power pump. It has a lifting capacity of 10 tons anilift of 103 in. The ram is telescopic in two lengths, 4in diameter, respectively. 1 a totalind 5 in. HEAVY ENGINE LATHE & Tool Company, Cincinnati, Ohio. There is an arrangementon it by which a combination of or metric pitches with aU. S. standard lead screw, or vice versa, is possible. Thestandard threads may be changed from one to another withoutduplicating or removing a gear by simply operating two gives the machine a very wide range. The device is com-plete in one unit, being assembled in a Imx nuamted on the. Notable amongthe (|uick chang the recent improvements in engine lathes isgear lathe, made bv the Cincinnati Lathe End of Cincinnati Lathe With Gear Cover Removed. front of the lathe. It provides the facilities of a standardlathe, and each gear will cut not only the pitch required, butthrough the series of gear box changes will give others as bed of the lathe is made of semi-steel, being designedto give the necessary rigidity under heavy cuts. The head-stock is made in three styles, one with a three-step cone anddouble back gears, and with the four or five-step cones withsingle back gears. The spindle is made of high carbon forgedsteel and is provided with a collar on the chuck end, whichgives a good, stiff bearing. The thrust bearing at the rear endof the spindle consists of a hardened tool steel collar arranged
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
