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Lumber Kilns
Kilns, Lumber. Hi These Clays Of Rapid Conversion Of Material, And Of Short Periods Between The Various Processes Of Conversion, Little Could Be Done By The Converter Of Wood Without The Aid Of Efficient Lumber-drying Kilns, Taking The Place Of The Old-fashioned Long Seasoning Process In Air Or Water. An ...

M Etal
M Etal Universal Radial 1 Represents A Versal Radial Drill Built By The Niles Tool Works, I,t,iiton, Ohio. A Heavy. Rotating Column. Mounted Upon A Long Supporting Sleeve, Which Is Secured To The Base-plate. Carries A Radial Arm, Which Can Be Clamped In Miy Position. The Machine Is Driven From ...

Machine
Machine. The Machine Here Illustrated Is Designed To Tap Auto Matically Square Or Hexagonal Nuts. Immediately Under The Hopper, Which Is Intended To Receive The Blank Nuts, Is An Openingthrongh Which Theblanks Fall Into A Trough, Which Conveys Them To The Feeding Mechanism. This Part Of The Machine Is So ...

Machinery
Machinery. Apparatus For The Treatment. And Handling Of Clay Prior To Its Manufacture Into Bricks, Tiles, Etc. When Clay Is Thoroughly And Evenly Tempered, It Is Then In Best Condition To Make A Good Brick. Hence, Since Clay In Its Natural State Is Found In Such A Variety Of Conditions, ...

Machinery
Machinery. The Goodyear Method Of Sewing Among Many Different Methods Of Sewing And Stitching Welted Shoes, And Sewing Turned Shoes, May Be Mentioned The Goodyear Method. In The Welt System, The Machines Employed Are An In-seamer For Sewing The Welts, An Out-sole Stitcher For Stitching The Sole To The Welt, ...

Machines
Machines. Brown Cf. Sharpe's Automatic Gear Cutter, Shown In Fig. 1, Is Automatic In All Its Motions, Cutting Through For Each Tooth. And Revolving The Wheel Until All The Teeth Are Cut. Thus Enabling The Operator To Attend To Other Work. The Indexing Is Done By A Worm And Worm-wheel ...

Machines Tenoning
Tenoning, Machines. Tenons May Be Made Entirely With Saws, Or Entirely With Rotating Cutters, Or With A Combination Of Both. Where Cutters Are Used, One Head May Be Made To Cut A Single, A Double, Or A Treble Tenon Entire, At One Operation. Where Saws Are Used It Is Always ...

Magnetic
Magnetic Separatous.—the Bachanan Magnetic Separator (fig. 12) Consists Of Two Iron Rolls, Journaled In Two Horseshoe Magnets. These Magnets Are Wound With Insulated Copper Wire And Excited By A Dynamo. The Direction Of The Winding Is Such That One Roll Is Of North And The Other Of South Polarity, Thus ...

Manufacture Of Ordnance In
Manufacture Of Ordnance In Tiie United States.—the First Forged-steel Gun Made In This Country Was A 6-in, Breech-loading Rifle. The Tube Was Annealed Metal, But The Jacket Was Of Oil-tempered Steel, Imported. The Two Guns Following Were Also 6-in., Of Annealed Metal, The Forgings Being Of Domestic Manu Facture, As ...

Manufacture Of Steel
Steel, Manufacture Of. Recent Improvements.—the One Notable Improvement In The Manufacture Of Steel In The Past Ten Years Has Been The Successful Introduction Of The Basic Process, Both Open-hearth And Bessemer, The Invention Of The Late Sidney Gilchrist Thomas. In Improvement In Mechanical Details Of The Manufacture, With The View ...

Marine I Types Or
Engines, Marine. I. Types Or Engines.— Tile Tr/pie-ed-pa Rion Eflgii/p.—fig. 1 Represents The Latest Type Of Triple-expansion Engines Used In The High-speed Twin-serew 'brit Ish Cruisers Thetis, Terpsichore, And Tribune. They Were Built. By James, & George Thomson, Of Glasgow. In The Design The Makers Have Obtained Over 13 Indicated ...

Master Key
Master-key Locks.—the Yale Duplex Lock.— The Use Of A Master-key, By Which A Number Of Locks Can Be Opened By One Key In The Hands Of A Janitor Or Other Person In Charge, While None Of The Individual Or Change Keys Will Interchange, Is A Feature Frequently Demanded For Hotels ...

Measuring I Nst
Measuring I Nst It Um I.:nts. I.:ia;(1'1{11`a L. It Needs No Demonstration To Show That Accurate Riir The Measurement. Of Electricity, Especially When The Sante Is Used As A Source Of Power Or Of Are Of As Much Importance As Accurate For Measurement Of Steam. A Which Will Not Measure ...

Mechanical
:mechanical Heartit-furnaces.—the Rotary-pan Furnace (fig. 2) Used At The Haile Mine, North Carolina, For Roasting Fine Pyrites For Chlorination, Is A Combination Of The Rever Beratory Furnace With The Mechanical Hearth-furnace. It Is A Reverberatory Furnace With Step-hearths And A Circular Rotating Hearth At The Fire-box End. The Charge Is ...

Mechanical Instruments
Instruments, Mechanical. The Bel7mrs Beam 111icrometer (fig. 1) Is A Convenient Instrument For Mechanics Desiring Close Measurements. The Beam Is Provided With Two Heads—one Fast, The Other Loose. The Loose Head Is Dovetailed To The Beam, Open On One Side Aml Flush With The Face Of The Beam, And Is ...

Mechanical Stokers
Stokers, Mechanical. The Roney Mechanical Stoker, Figs. 1, 2, And 3, When Attached To Steam Boilers, Receives The Fuel In Bulk, And Feeds It Continuously And At Any Desired Rate To The Furnace. The Fuel To Be Burned Is Dumped Into The Hopper On The Boiler Front. In Small Plants ...

Meta Eng
Meta Eng. The Accompanying Engravings Illustrate The Most Recent Forms Of Metal-working Lathe-tools. Fig. 1 Shows A Lathe Threading-tool As Made Lw The Morse Twist Drill & Co. The Holder Of This Tool Is Slotted, Forming Jaws, Between Winch The Circular Cutter Is Firmly Livid By A Bolt Passing Through ...

Meta Lath Es
Lath Es, Meta The Putnam, Eng I To G Illustrate A New Standard Lathe Recently Brought Out By The Putnam Machine Co., Of Fitchburg, Mass. Figs. I And 2 Represent The Bed In Longitudinal And Cross-section. This Is A Heavy U-shaped Casting, Strengthened By A Strong Truss Extending From End ...

Metal Borimi Maciiines
Borimi-maciiines, Metal These Are Classified Under: I. Horizontal Boring Machines T Ii. Vertical Itoring-machines. I. Ibutizontal Acii The Niles Hori2ontal Boring, Drilling, And Xining Machine Is Shown In Fig. 1. The Machine Consists Of A Heavy Column It) Ft. (i In. High, Mounted On A Bed-plate Of Any Length To ...

Metal Rolls
Rolls, Metal Workin. Roughing Train And Doubling Machine For A Tin-plale Rolling Mill. — Theodore L. Thomas, Of The Union Works Of The Illinois Steel Co., Chicago. Has Designed A Mill For Rolling Tin-plate Bars, Which Is Herewith Illustrated, Fig. 1 Showing The Side Elevation, And Fig. 2 The Ground ...

Metal Shaping Machines
Shaping Machines, Metal. The Hendey Traverse Skaper.—fig. 1 Shows A Heavy Shaper Built By The Hendey Ma Chine Co., Tor Rington. Conn., And Designed For Railroad And Other Heavy Work. It Has A Stroke Of 30 In., And Can Be Set To Vary Length Of Stroke While In Motion. The ...

Molding Machines
Molding Machines. Under This Bead There Are Many Classes, The Most Important Of Which Are Outside Machines, Which Have The Bed, With Two Or Three Of The Heads, Outside The Frame Of The Machine ; Inside Machines, Which Have All The Heads And Tables Inside Of The Frame ; Edge-molding ...

Mortising Machines
Mortising Machines. The Fag Cal. Matti:dna, Recessing, And Boring 3fachine, Shown In Fig. 1, Is For Mortising By A Rotating Cutter, As In Heavy Timbers. Both The Cutting And The Boring Tools Work In A Heavy Spindle, Which Has An Adjustable Frame Gibbed To A Column For Vertical Movement. There ...

Mowers And Reapers
Mowers And Reapers. Both Mowers And Reapers Of The Side-cut Type Are Now Made Preferably ; Also " Front-cut," The Driver's Seat Being, In This Form Of The Machines, Attached At A Point Which Is Rearward As Relates To The Cutting Line Of The Machine. The Rear Cut Mowers And ...

Multipolar
Multipolar Maciiines.—as The E. 31. F. Generated In Dynamo-electric Machines Is De Pendent Upon The Rate Of Change Of The Cutting Of The Lines Of Force, The Speed Of The Machine Can Evidently Be Reduced By Increasing The Number Of Poles Presented To The A-rmature. Modern Electrical Engineering Is Tend ...

Oil V Automobile
V. Automobile, Oil Visa Torpedoes Whitehead Automobile Torpedo Consists Of A. Cigar-shaped Envelope Of Steel Or Phosphor Bronze, Containing Six Compartments For Its Pro Pelling, Directing, And Exploding Mechanism. Its Motive Power Is Compressed Air ; Rt Is Propelled By Two Two-bladed Screws, Revolving In Opposite Directions About The Same ...

Open Side Iron
Open-side Iron Frs,—the Open-side Planer Is In No Sense A " Special " Tool, As It Does The Same Work As The Ordinary Two Post Planers Of Equivalent Size. A Comparatively Small " Open-side " Tool Will, However, Plane Work Which Would Necessitate A Larger Planer Of The Regu Lar ...

Ordnance
Ordnance. (see Also Armor ; Gun, Pneumatic ; And Projectiles.) Progress Abroad.—in June, 1879. A Committee Of Ordnance Was Appointed In England For A Full Consideration Of The Relative Advantages And Disadvantages Of Muzzle Loading And Breech Loading. The Result Was To Commit The Government To An Experimental Course Of ...

Ore Crushing Machines
Ore-crushing Machines. Machines For Crushing Ore Or Rock May Be Divided Into Two Classes, Coarse-crushing And Fine-crushing. The Ore As Received From The Mine Is Usually In Large Pieces, Requiring A Preliminary Breaking, Which Is Accomplished By Machines Of The First Class, Before The Succeeding And Final Crushing, Which Is ...

Ore Iiressing Machinery Dressing Works
Ore-iiressing Machinery. Dressing Works. (see Ore-crusiiing Machin Dressing Is The Art Of Separating The Mineral In Ore From The Worthless Rock Or Gangue, With Which It Is Intermingled, The Mineral, Thus Concentrated, Being Subsequently Treated By The Proper Metallurgical Process. In Dressing Ores Mechanically, There Is Always A Loss In ...

Ore Sampling
Ore Sampling. Gold And Silver Ores Are Generally Bought And Sold By Sample. In Colorado, Where Nearly All The Silver Lead Ores, And Much Of The Gold Ore, Is Sold To Public Lead Smelters For Reduction, This Custom Is Followed Exclusively, And The Methods Of Ore Sampling Have Undoubtedly Been ...

Other Forms Of Tenoning
Other Forms Of Tenoning Machines.—blind-scat Tenoning Machines.— In The Blind-slat Tenoning Machine Shown In Fig. 9 The Tenons Arc Produced By Saw-like Cutters Borne On A Horizontal Mandrel, Which Is Parallel With The Slat. The Slat Is Fed In To A Stop-gauge Through A Rotating Chuck, And Then Brought. Down ...

Packing
Packing. Corrugated Copper Gaskets, Shown In Fig. 1. Are Now Used For Packing Pipe Joints. They Are Made Of Thin Sheet-copper, Stamped With Concentric Corrugations, Which On Compression Flatten Out And Produce A Complete Metal Union. They Are Not Impaired By Heat Or Cold, And Can Not Blow Out. From ...

Parts Of
Parts Of Dvxxmo-mactusgs.—the Principal Organs Of All Dynamos Are The Armature In Which The Currents Are Generated, And Which, As A, Rule, Forms The Moving Or Driven Part Of The Machine; And The Field Magnets, Which Create The Magnetic Field Through Which The Arma Ture-conductors Pass. To These Principal Organs ...

Picking
Picking Tables.—in Ore Dressing It Is Frequently Found To Be Advantageous To Sort The Ore Before It Goes To The Fine-crushing Machinery Which Prepares It For The Hydraulic Machines—picking Out The Pieces Of Rich Mineral, Which Do Not Need To Be Concentrated, And Also The Waste Or Worthless Rock. This ...

Pipe Coverings
Pipe Coverings. (see Also Boilers.) A Form Of Pipe Covering, Fig. 1, Made By The United States Mineral Wool Co., Consists Of A Metallic Casing, Made From Steel Plate, Coated With Lead, Constructed With A Lock Which Conceals The Edge And En Ables The Two Edges To Be Permanently Fastened ...

Pipe Cutting And Threading Machines
Pipe-cutting And Threading Machines. Forbes' Die Stock.—figs. ] And 2 Illustrate The Front And Back Views Of The Nos. 1 And 11 Forbes' Die Stocks, Made By Curtis & Curtis, Of Bridgeport, Conn. One Set Of (lies Is Supplied With The Machines For Each Of The Standard Threads Cut, So ...

Pipe And Tube Making
Pipe And Tube Making 111[achines. I. New Processes Of Making Seam Less Tubes. —the Manufacture Of Tubes Without Soldering Has In Recent Years Been The Object Of Persistent Research And Important Labors That Have Originated Several New Processes, Among Which Those Of Messrs. Flotow & Leidig, Robertson, And Mannesmann Are ...

Planing
Planing', Hacninl;s.—lgtae. The Sellers ,9piral-gear Planing Machine.—at The Paris Exhibition Of 18s9 Messrs. William Sellers And Co., Incorporated, Of Philadelphia, Exhibited A Planing Machine, Fig. 1, Which Attracted Great Attention On Account Of The Many Interesting Features Which It Possessed. For Some Years It Had Been Tried Experimentally In The ...

Planing
Planing Machines.—w0011. In Considering The Subject Of Planing Machinery, We May Include Therein Machines Which Give To Sawed Timber Proper Dimensions. Dressing It On All Four Sides At Once, As Well As Those Which Merely Give It A True Surface; And As Very Many Of Those Machines Which Dress It ...

Plate Planing Machines
Plate-planing Machines,- The Niles Boiler-plate Planing Muchine.—fig. 5 Shows A Boiler-plate Planing Machine, Made By The Niles Tool Works. Hamilton, 0. It Will Bevel The Edge And Square Up A Mu-row Caulking Surface, Plane Plates 14 To 18 Ft. Long At One Set Ting. And Is Arranged To Plane Any ...

Plows
Plows. Since The Year 1880 The Improvements Made In The Plow Of The Ordinary Type Have Concerned Mainly The Materials And Manufacturing Methods. Modifications Of Form Have Been Limited To Iiiinor Details, Important As Increasing Efficiency And Durability, Without Novelty In The General Form. Cast-steel And Chilled Iron Have Been ...

Pneunatic Gun
Gun, Pneunatic. The Improved Pneumatic Ordnance Designed By John Ilapieff Is Adapted To The Firing Of Projectiles Containing High Explosives. It Consists, As Shown In Figs. 1,2, And 3, Of A Gun-barrel A That Is Provided From Its Breech To A Point Beyond The Trunnions With A Surrounding Jacket B, ...

Potato Digger
Potato-digger. In Their Present Best Forms These Machines Are Of Very Recent Development, Superseding The Plow Type. The Design Is To Raise The Roots All To The Surface, Clean Them From Adhering Dirt, And Leave Them In A Row Convenient For Basketing, Yet With Out Marring Their Skins Or Bruising ...

Power Hammers
Hammers, Power. No Important Improvement Has Been Made In Steam-hammers During The Last Ten Years, But A Notable Event In The History Of Steam-hammers Is The Erection And Completion In 1891 Of The Largest Ham Mer In The World, At The Bethlehem (pa.) Steel-works. A Description Of This Enor Mous ...

Printinci Presses
Presses, Printinci. The Hoe Rotary Art Press.—with The Growth Of Magazines And The Advance Of Their Artistic Character Has Come The Demand For Machinery Capable Of Producing The Highest Class Of Illustrated Work At Great Speed, And It Is To Meet This Demand That The Hoe Rotary Art Press, Fig. ...