A machine is any mechanical or organic device that transmits or modifies energy to perform or assist in the performance of tasks. It normally requires some energy source ("input") and accomplishes some sort of work.
People have used mechanisms and machines to amplify their abilities since before written records were available. Generally these devices decrease the amount of force required to do a given amount of work, alter the direction of the force, or transform one form of motion or energy into another.
The mechanical advantage of a simple machine is the ratio between the force it exerts on the load and the input force applied. This does not entirely describe the machine's performance, as force is required to overcome friction as well. The mechanical efficiency of a machine is the ratio of the actual mechanical advantage (AMA) to the ideal mechanical advantage (IMA). Functioning physical machines are always less than 100% efficient.
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Antiques and Collectibles Auctions
Machines :: Sewing

Dave's Vintage Sewing Machines. - Enthusiast's site featuring photos of their collection.
Meta Description: [ antique and vintage sewing machines including bradbury, singer, jones, frister and rossmann, ]
Antique Sewing Machine Collector - Online resource for enthusiasts of antique and collectable toy sewing machines.
Meta Description: [ publication devoted to antique sewing machines and collectable toy sewing machines. ]
Antiques of a Mechanical Nature - Commercial site dealing in sewing machines and other interesting mechanical bygones.
Meta Description: [ patented-antiques.com Buys, sells, trades, patented antiques, antique sewing machines, sewing machine patent models, antique salesman samples, old tools, sadirons, antique, antiques ]
Featherweight Fanatics - Site dedicated to the Singer Featherweight.
Meta Description: [ Featherweight Fanatics Mailing list for Singer 221 Sewing Machines ]
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Featherweights - Singer Featherweight sales service.
Gaileee's Singer Featherweight Resource Site - Family collects and sells the Singer Featherweight Sewing Machines. Technical information about the 221 / 222 Singer sewing machine, and photographs of the portable sewing machine.
Meta Description: [ Singer Featherweight 221 Sewing Machine
info & resource guide (fw). Everything and Anything you wanted to know
about the Singer 221 Featherweight. For Sale too! ]
IMCA Sewing Machine Museum. - A brief introduction to the Dutch De Vlieger Collection.
Jodeli's Vintage and Antique Sewing Machines - Collectors site.
Meta Description: [ Information on quilting, vintage and antique sewing machines, auto racing, and other interests ]
Krisi Santilla's Singer Sewing Machine site - Reference site for Singer and Featherweight models, including FWF data and machine dating help.
Meta Description: [ Krisi Santilla's Singer Sewing Machine Collection Site.
Collectors of Featherweights and antique Singer sewing machines will find charts for dating
their Singer sewing machines, charts of part numbers, photos to aid in filling out the
Featherweight Fanatic survey, photos of unusual Singer feat... ]
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Mey Museum. - Overview of the German based sewing machine museum, including information on chronological development.
Sewantique.com - Introducing the London Sewing Machine Museum, including photographs and admission details.
Sewing Machines Past and Present. - Enthusiast's site, including information on French pioneer Thimonnier.
Singer Featherweight 221 Crinkle and Blackside Machines - Singer Featherweight site, with particular interest in crinkle and blackside variants.
Meta Description: [ Singer Featherweight 221 site, with particular interest in WWII ]
Singer featherweight parts and supplies. - Commercial site offering competitively priced parts and supplies for Singer Featherweights.
Meta Description: [ Singer featherweight sewing machine 221 parts and supplies. We carry a large selection
of singer featherweight 221, 222k supplies........., 221parts.com Singer Featherweight Supply -- the source for singer featherweight, Singer Featherweight Parts, Singer featherweight 221
parts, featherweigh... ]
St. Anne's Virtual Sewing Machine Gallery. - An enthusiast shares their collection of machines and related ephemera.
The NeedleBar Vintage Sewing Machine Collectors Group - A reference site for collectors of antique and vintage sewing machines, featuring Singer decals list.
The Talking Machine - Sewing Machines sales page.
Meta Description: [ Domain name registration and hosting solutions. Multiple domain search, registration and control panel. Virtual web hosting with free technical support. E-commerce with secure credit card transactions. ]
The Treadlers Village - Standard treadle sewing machine catalogs and manuals from 1909, 1915. Includes sewing machine photos.
Meta Description: [ treadle sewing machine
collector ]
Vintage Sewing Machines - Collector site which includes animations of different types of stitch formation.
Meta Description: [ Dedicated to the restoration, collection and a knowledge of vintage sewing machines. ]
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