Home >> Engineer's And Mechanic's Encyclopedia >> Wedge to Zinc

Engineer's and Mechanic's Encyclopedia

Wedge
Wedge. A Simple Machine, Of Great Utility In Cases Where An Immense Pressure And Little Motion Are Required. The Wedge May Be Considered A Modi Fication Of The Inclined Plane, To Which In Many Cases It Is Strictly Analogous, Differing Only In The Circumstance That The Body To Be Moved ...

Weight
Weight. The Force By Which Bodies In Air Press Towards The Centre Of The Earth ; And The Measured Quantity Of That Force, In Any Body, Is The Weight Of It. The Earliest Attempt On Record To Define Measure Of Capacity And Weight, By Referring Them To Some Natural Standard, ...

Whale Fishery
Whale-fishery. This Subject Being So Intimately Connected With Our Manufactures, We Insert The Following Account Of It. In The Greenland Fishery Europeans, Every Ship Is Provided With Six Boats, To Each Of Which Belong Six Men, For Rowing The Boat, And A Harpooner, Whose Business Is To Bugle The Whale ...

Wheel
Wheel And Axle. A Modification Of The Lever, By Means Of Which A Weight May Be Raised To A Considerable Height A Slight Attention To The Nature Of The Lever Will Show That The Extent Of Its Influence In Space Is Very Small, Depending Upon The Length Of That Arm ...

Wheel
Wheel. A Circular Frame, Or Solid Disc, Made Of Wood Or Metal, And Turning Upon An Axis. There Are A Variety Of Kinds, But We Shall In This Place Direct Our Attention To Carriage Wheels, To Which The Foregoing Definition Will Best Apply. The Ordinary Carriage Wheel Consists Of Three ...

Whiskey
Whiskey. This Species Of Ardent Spirit Is Much Used In This Country As Well As Ireland. It Varies Considerably In The Mode Of As In Its Strength And Comparative Value. One Of The Modes Ofring It Is Stated In Gray's Operettas Chemist To Consist In Mixing 3840 Rye Or Barley ...

Wind
Wind. Air Put In Motion By Some Physical Cause, So As To Become A Current Or Stream. Winds Are Denominated Ao Cording To The Points From Which They Blow; See Courses. A Variety Of Machines Have Been Invented At Different Times For Ascertaining The Strength Or Velocity Of The Wind; ...

Wind Instruments
Wind-instruments. An Accurate Acquaintance With The Principles Of Acoustics Is Essential To The Scientific Construction Of Every Species Of Musical Instrument, But Especially Those Which Owe Their Operation To The Action Of The Wind. Wind-instruments Generally Produce Their Effects By The Vibra Tions Of A Column Of Air Confined At ...

Windlass
Windlass. A Machine Used On Board Ships, Chiefly For Raising The Anchor. It May Be Regarded As A Modification Of The Mechanical Power Termed The Wheel And Axle, Employed To Raise Buckets From Wells, And For Infinite Variety Of Other Uses. In Nautical Affairs, It Consists Of A Large Cylindrical ...

Windmill
Windmill. A Mill Of Any Kind Actuated By The Impulse Of The Wind. They Are Of Two Kinds—oertical And Horixowtsls Vertical Windmills (to Which • Decided Preference Has Been Hitherto Given) Usually Consist Of A Strong Shaft Or Aids Inclining A Litde Upwards From The Horizon, With Four Long Yards ...

Window
Window. An Aperture In The Wall Of A Building, For The Admission Of Light And Air. Modern Windows Are Almost Uniformly Furnished With Glazed Frames, That Open And Close, Besides Shutters And Blinds, By Which The Admission Of The Light And Air May Be Easily Regulated At Pleasure.—see The Article ...

Wine
Wine. A Term Applied By Chemists To All Liquids That Have Boom Vinous By Fermentation ; But It Is Popularly Considered As Confined To Sacchmaa Vegetable Substances That Have Been Converted Into A Vinous Liquid. It Seam To Be A Neeenssry Condition, That Sugar Must Be Present In A Vegetable, ...

Wire
Wire. Metallic Threads, Or Fine Rods, Produced By Forcibly Drawing The Ductile Metals Through A Hole Of Less Area Than Their Previous Transverse Sections. The Sizes Of Which Wire Are Made Are From Three-eighths Of An Inch In Diameter To That Of The Four-thousandth Part Of An Inch. For The ...

Wood
Wood. The Ligneous Matter Forming The Substance Of Trees. It Is, In Most Cases, Possessed Of Colour, Taste, And Smell, From The Presence Of Extractive Matter, Mucilage, Resin, Or Essential Oil ; And It Is Only When These Have Been Extracted By Water And Alcohol, That Wood Can, As A ...

Wool
Wool. The Long, Soft, Curly Hair, Which Covers The Skin Of Sheep, Sad Some Other Ruminating Animals. Wool Resembles Hair In Many Respects ; Brides Its Fineness, Which Constitutes An Obvious Difference, There Are Otherparticulate Which May Serve Also To Distinguish Them From One Another. Wool, Like The Hair Of ...

Writing
Writing. The Art Of Communicating Our Ideas To Others By Means Of In Scribed Signs Or Characters. Amongst The Various Arts Which Have From Time To Time Contributed To The Improvement And Advancement Of Society, There Is, Per Haps, None Which, In Point Of Utility And Excellence, Will At All ...

Yarn
Yarn. Flax, Wool, Or Other Fibrous Matter, Spun Into A Loose Thread ; Of Which Cloth Or Cordage Is Made. The Process In Preparing Yarn, Has Been Gene Rally Treated Under The Various Substances Of Which It Is Formed. In This Place We Shall Therefore Confine Our Attention To Yarn ...

Zaffre
Zaffre. The Residuum Of Cobalt, After The Sulphur, Arsenic, And Other Vola Tile Matters Of This Mineral, Have Been Expelled By Calcination. The Ores Of Cobalt Are Roasted In Verberatory Furnaces, Provided With Chambers To Receive The Arsenic : The Product Of Ugh Is Usually About 88 Per Cent. Of ...

Zealand
Zealand (nets) Flax. The Phormisces Texas Of Naturalists. Its Com Mercial Name Has Been Acquired From The Circumstance Of The Natives Of New Zealand Employing It In The Manufacture Of Their Apparel, Cordage, And All Those Purposes For Which Hemp And Flax Are Used In Other Countries. The Strength Of ...

Zinc
Zinc. A Metal Of A Bluish-white Colour; Of Considerable Hardness, And Sr Malleable, When Pure, As Not To Be Broken With The Hammer, Though It Eased Be Thus Much Extended. It Is, However, Easily Rolled Into Sheets, By The Fiatlit Mill And In This State, It Has Recently Been Brought ...