Electric drill

An electric drill is a drill which is driven by an electric motor. The invention of the electric drill is credited to Arthur James Arnot and William Blanch Brain of Melbourne, Australia who patented the electric drill in 1889.^[1] In 1895, the first portable handheld drill was created by brothers Wilhem & Carl Fein of Stuttgart, Germany. In 1917 the first trigger-switch, pistol-grip portable drill was patented by Black & Decker.^[2]

References

↑ "Specifications for registration of patent by William Blanch Brain and Arthur James Arnot titled - Improvements in electrical rock drills coal diggers and earth cutters" National Archives of Australia.1889 Retrieved 1 April 2006
↑ US patent 1,245,860, S.D. Black & A.G. Decker, "Electrically driven tool", issued 1917-11-06

External links

Metalworking

Casting Fabrication Forming Jewellery Machining Metallurgy Smithing Tools and terminology Welding

Power tools

sawhorse workbench

air hammer angle grinder bandsaw belt sander blow torch circular saw concrete saw crusher cutting torch die grinder drill glue gun hammer drill heat gun impact driver impact wrench jackhammer jigsaw jointer multi-tool nail gun power miter saw nibbler power trowel radial arm saw random orbital sander reciprocating saw rivet gun rotary tool router table sander scroll saw shear soldering gun soldering iron steam box table saw thickness planer wood router wood shaper

Types of tools Cleaning Cutting and abrasive Forestry Garden Hand Machine and metalworking Measuring and alignment Power

Woodworking

Overviews

Forms

Woods

Soft	Cedar (Calocedrus, Cedrus) Cypress Douglas fir Fir Juniper Larch Pine Spruce Yew

Hard	Ash Alder Aspen Balsa Beech Birch Cherry Chestnut Cocobolo Ebony Elm Hazel Lignum vitae Linden (lime, basswood) Mahogany Maple Oak Padauk Plum Poplar Teak Totara Walnut Willow

Tools

Abrasives Axe Adze Chisel Clamp Drawknife Drill Float Mallet Milling machine Mitre box Moulding plane Plane Rasp Router Sandpaper Spokeshave Timber-framing Vise Winding sticks Wood scribe Workbench

Saws	Backsaw Bandsaw Bow Bucksaw Chainsaw Circular Compass Coping Crosscut Frame Fretsaw Jigsaw Keyhole Miter Rip Scroll Veneer Whipsaw

Geometry

Joints	Birdsmouth Bridle Butt Butterfly Coping Crown of thorns Dados Dovetail Finger Groove Halved Hammer-headed tenon Knee Lap Mason's mitre Miter Mortise and tenon Rabbet/Rebate Scarf Splice Tongue and groove

Profiles	Bead Bevel Chamfer Molding Ogee Ogive

Treatments

Organizations

Conversion

Techniques

Category
WikiProject
Commons

This article is issued from Wikipedia - version of the 7/24/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.