us patent picture of the rotoki "Babe"
Fig. 1 of US patent 826,377 for a "sanitary appliance", designed to "cure the habit of self-abuse in males" (masturbation)
Deutsch: Sauerbrey Pat. 225423
Deutsch: Sauerbrey Pat.225168
Deutsch: Sauerbrey Pat.225169
Sheldon colorscope - Apparatus and method for the comparison of colors, US 1971317 A
Steam shovel apparatus invention by Charles Brady King
en:SIG MKMS The delayed blowback made use of two-part bolt designed by Gotthard End. In this system, the bolt body was allowed to recoil for a very short distance after the bullet was fired. After this it was More
Sparking Mechanism for electric igniters, being specially designed for use in connection with explosion engines.
Spiral Escalator US Patent 5,158,167 (Pahl 1992) Drawing Deutsch: Wendelrolltreppe US Patent 5,158,167 (Pahl 1992) Zeichnung
SPRING SUSPENSION FOB VEHICLES by C. B. KING
Reversible Steam-Engine invention Public domain photograph related to motor parts, engines, free to use, no copyright restrictions image - Picryl description
Steam Shovel invention Public domain photograph related to motor parts, engines, free to use, no copyright restrictions image - Picryl description
James L. Buie Temperature-compensated transistor circuit patent US2867695 A
Transmission 1904 invention by Charles Brady King Public domain photograph related to motor parts, engines, free to use, no copyright restrictions image - Picryl description
1907 transmission invention by Charles Brady King Public domain photograph related to motor parts, engines, free to use, no copyright restrictions image - Picryl description
Transmission 1908 invention of Charles Brady King Public domain photograph of electrical equipment, power lines, engine, free to use, no copyright restrictions image - Picryl description
Transmission 1915 "CHANGE SPEED GEARING" invention by Charles B. King Public domain photograph related to motor parts, engines, free to use, no copyright restrictions image - Picryl description
This is the first page of US Patent number 3,663,800 - Optical Label Reader and Decoder. More conventionally known as the super market scanner.
Electric-Wire Connecter. US Patent 1583479. The Inventors claim isː- "An electric wire connecter, comprising a tubular metal member capable of receiving a multiplicity of wire ends, a metal screw entering sa More
United States patent 3118022 of first foil electret microphone (electroacoustic transducer), invented by G. M. Sessler and J. E. West at Bell Laboratories in 1962.
Figure 1 of United States Patent 661,619 by Danish inventor Valdemar Poulsen - the first magnetic recorder.
"Figure 1 is a view of a baby cage constructed in accordance with the invention and showing the same applied to a window."
Deutsch: Patentzeichnung des US-Patents 174.965 von Duncan MacKinnonEnglish: Patent drawing of US-Patent 174.965 from Duncan MacKinnon
US2695645A Bread server or analogous seal tight container (1950 filed, 1954 published) by Earl S. Tupper - Fig. 1, 2, 3, 4
US3005282A Toy building brick (1958 filed, 1961 published) by Christiansen Godtfred Kirk - Lego brick, p.1, Fig. 1~6
US3005282A Toy building brick (1958 filed, 1961 published) by Christiansen Godtfred Kirk - Lego brick, p.2, Fig. 7~12
"Propulsive wing with inflatable armature. [...] The wing can be used in sliding sports, yachting and gliding." Public domainPublic domainfalsefalse This work is in the public domain because it was publ More
US patent 4852450, Ralph Novak, "Fingerboard for a stringed instrument", granted 1989-08-01
US patent US496716A: Two-dimensional puzzles with slideable or rotatable elements or groups of elements, the main configuration remaining unchanged with rotatable concentric rings or discs.
US59745A Whirligig (1866 published) by James L. Haven; Charles Hettrick - Yo-yo, Fig. 1, 2, 3
US patent 87767 (1869) registered by R.H. Fisher of Beaver Falls Cutlery Company.
US patent 89059 (1869) registered by Samuel Mason and Edward Binns of Beaver Falls Cutlery Company.
Underground gasification scheme proposed by Betts (Gasification in a channel)
Underground gasification scheme proposed by Betts
Underground gasification scheme proposed by Betts (Blind borehole method)
USD164227S Guitar (1951-04-23 filed, 1951-08-14 published) by Clarence L. Fender - Fender Broadcaster, Fig. 1, 2, 3
Figures from US Patent 225,770.
Technical drawing of a windowed envelope, United States Patent 701839, by Americus F. Callahan. Image has been colorised and cleaned up of the more significant blemishes.
US Patent 1508711, P. O. Noble, Apparatus For Arc Welding, the 5th sheet
US Patent 1952927, Irwing Langmuir, Furnace, the 1st drawing, cut-out of the
Valve-Gear invention
Walter Rice patent - Pneumatic spring for vehicles 1914 Public domain photograph of electrical equipment, power lines, engine, free to use, no copyright restrictions image - Picryl description
Patent drawing of the action of the Winchester Model 52 rifle
W. R. Manley feathering paddle-wheel patent diagram. U.S. patent 35,697 dated June 24, 1862. This design was intended to reduce fuel consumption and mechanical breakdowns on paddle-wheel steamships.
The illustration from a patent for a "filtrative inhaler", filed by Sigismund Danielewicz on January 4, 1909 and granted on June 1 of the same year
Deutsch: Eli Whitneys Patent für den Cotton gin English: Eli Whitney's Patent for the Cotton gin, March 14, 1794; Records of the Patent and Trademark Office; Record Group 241, National Archives. Español: Pat More
Français : Détail du brevet US3,283,170A déposé par James L. Bruie le 8 septembre 1961, marquant l'invention des circuits logiques TTL.
US Patent 600001 (Bicycle) - Fig 5