File:Cassier's magazine (1904) (14766484244).jpg

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English:

Identifier: cassiersmagazi2719041newy (find matches)
Title: Cassier's magazine
Year: 1891 (1890s)
Authors:
Subjects: Engineering
Publisher: New York Cassier Magazine Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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FIG. 10.—WINDING MACHINE FOR REELING CORDITE AS IT COMES FROM THE PRESS SHOWNON THE OPPOSITE PAGE Woolwich Arsenal for forging purposes;but as these and similar presses havebeen often illustrated in engineeringmagazines, it has not been considerednecessary to describe them here. Arsenals employ large numbers of allkinds of hydraulic machine tools, sim-ilar to those to be met with in generalengineering shops, for such operationsas riveting, punching, shearing, flang-ing, pressing, etc., as well as presses This is more especially marked in thecase of moving machinery, such as trav-elling cranes, but applies even in lessobvious cases, as fixed cranes, punchingand shearing machines, bending rolls,etc. For travelling cranes there can beno question that electricity is the mostadvantageous of all motive powers, andeven for fixed cranes, which are con-stantly at work with loads of greatlyvarying weights, electricity can show 24 CASSIERS MAGAZINE
Text Appearing After Image:
FIG. II.—A PRESS USED ON BOARD H. M. TORPEDO-SHIP HECLA. BUILT BY MESSRS. FIELDING & PLATT, LTD., GLOUCESTER THAWING OUT FROZEN PIPES ELECTRICALLY more economical results than hydraulicpower, as the consumption of current•depends upon the amount of work beingperformed, while single power hydrauliccranes consume as many cubic inches offluid whether the load be heavy or light.If, however, the load is always approxi-mately the same, a well - designedhydraulic crane of good constructionwill have a higher efficiency than anequally good made of electric crane. For slow-working machine tools, suchas manhole punches, where the time isnot occupied in the actual operation somuch as in getting the material intoplace, hydraulic machinery is to be pre-ferred, as the speed reduction gear be- tween the motor and the cam shaft arc-by no means as efficient as the direct-acting hydraulic ram, which has alsothe advantage of not breaking down ifthe operator tries to do work beyond itscapacity. As

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Volume
InfoField
1904
Flickr tags
InfoField
  • bookid:cassiersmagazi2719041newy
  • bookyear:1891
  • bookdecade:1890
  • bookcentury:1800
  • booksubject:Engineering
  • bookpublisher:New_York_
  • bookpublisher:_Cassier_Magazine_Co_
  • bookcontributor:Smithsonian_Libraries
  • booksponsor:Smithsonian_Libraries
  • bookleafnumber:35
  • bookcollection:smithsonian
Flickr posted date
InfoField
28 July 2014



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