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Cyclopedia of Architecture, Carpentry and Building : A General Reference Work (1912)

Special Lamps
Special Lamps The Mercury Vapor Lamp. The Mercury Vapor Lamp In This Country Is Put On The Market By The Cooper-hewitt Electric Company And It Is Being Used To A Considerable Extent For Industrial Illumination. In This Lamp Mercury Vapor, Rendered Incandescent By The Passage Of An Electric Current Through ...

Standing Seam Roofing
Standing-seam Roofing Another Form Of Metal Roofing Is That Known As Standing Seam, Which Is Used On Steep Roofs Not Less Than S Pitch, Or A The Width Of The Building. It Consists Of Metal Sheets Whose Cross Or Horizontal Seams Are Locked As In Flat Seam Roofing, And Whose ...

Two Wire And Three Wire Systems
Two-wire And Three-wire Systems As Both The Two-wire And The Three-wire System Are Extensively Used In Electric Wiring, It Will Be Well To Give Some Consideration To The Advantages And Disadvantages Of Each System, And To Explain Them Somewhat In Detail. Relative Advantages. The Choice Of Either A Two-wire Or ...

Types Of Arc Lamps
Types Of Arc Lamps Arc Lamps Are Constructed To Operate On Direct-current Or Alter Nating-current Systems When Connected In Series Or In Multiple. They Are Also Made In Both The Open And The Enclosed Forms. By An Open Arc Is Meant An Arc Lamp In Which The Arc Is Exposed ...

Various Shapes Of Bars
Various Shapes Of Bars In Addition To The Shapes Of Bars Shown In Figs. 145 To 148 In Clusive, There Is Shown In Fig. 151 A Plain Bar Without Any Condensation Gutters, The Joint Being At A. B B Represents The Glass Resting On The Rabbets Of The Bar, While ...

Various Shapes Of Curbs
Various Shapes Of Curbs In Figs. 157, 158 And 159 Are Shown A Few Shapes Of Curbs Which Are Used In Connection With Flat Skylights. A In Fig. 157 Shows The Curb For The Three Sides Of A Flat Skylight, Formed In One Piece With A Joint At B, While ...

Various Shapes Of Mouldings
Various Shapes Of Mouldings The Style Of Mouldings Arising In The Cornice Shop Are Chiefly Roman, And Are Obtained By Using The Arcs Of A Circle. In Some Cases, Greek Mouldings Are Used, The Outlines Of Which Follow The Curves Of Conic Sections; But The Majority Of Shapes Are Arcs ...

Various Styles Of Skylights
Various Styles Of Skylights In Fig. 165 Is Shown What Is Known As A Single-pitch Light, And Is Placed On A Curb Made By The Carpenter Which Has The Desired Pitch. These Skylights Are Chiefly Used On Steep Roofs As Shown In The Tration, And Made To Set On A ...

Varnish
Varnish A Varnish Is A Liquid Made To Be Applied To A Surface In A Thin Film, Which, On Exposure To The Air, Hardens Into A Protective Coating That Is Usually Glossy And Almost Transparent. There Are Two Principal Classes—spirit And Oleo-resinous Varnishes. Spirit Varnishes, Of Which Shellac* Is The ...

Wires Run Concealed In
Wires Run Concealed In Conduits Under This General Head, Will Be Included The Following: (a) Wires Run In Rigid Conduits. (b) Wires Run In Flexible Metal Conduits. (c) Armored Cable. In Installing Iron Conduits, The Conduits Should Cross Sleepers Or Beams At Right Angles, So As To Reduce The Amount ...

Wires Run Exposed On
Wires Run Exposed On Insulators This Method Of Wiring Has The Advantages Of Cheapness,durability, And Accessibility. For Large Feeder Or Main Conductors From No. 4 / 0 B. & S. Gauge Upward, A More Substantial Form Of Porcelain Insu Lator Should Be Used, Such As Shown In Fig. 21. These ...

Wires Run In Moulding
Wires Run In Moulding Moulding Is Very Extensively Used For Electric Circuit Work, In Extending Circuits In Buildings Which Have Already Been Wired, And Also In Wiring Buildings Which Were Not Provided With Electric Circuit Work At The Time Of Their Erection. The Reason For The Popularity Of Moulding Is ...

Wiring An Office Building
Wiring An Office Building The Building Selected As A Typical Sample Of A Wiring Installation Is That Of An Office Building Located In Washington, D. C. The Figures Shown Are Reproductions Of The Plans Actually Used In Installing The Work. The Building Consists Of A Basement And Ten Stories. It ...

Wood Lath
Wood Lath Wood Lath Is Occasionally Used, And, In Certain Sections Of The Country, Apparently With Good Results. It May Be Employed In Two Ways—one, In The Ordinary Manner, Only Spacing The Laths Somewhat Further Apart Than Would Be Advisable On The Interior Of The Dwelling. The Other Method Consists ...