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Larry at work in his machine shop.
Textielfabricage kousen te Tilburg
A black and white photo of a man working on a machine. War Poduction. Office of War Information.
HUA-159424-Afbeelding van een werknemer van de bovenbouwwerkplaats van de N.S. te Utrecht bij de spoorstaaflasmachine
A black and white photo of a man working on a machine. War Production FSA/OWI Photograph
Sweden, Karlskrona. Various industrial facilities %s
Saw Products: Dimensions - Indiana, National Forest Service photograph.
QF 4 inch Mk XVI gun Sorel Industries 1943 LAC 3197371
MHD MAGNETIC HYDRODYNAMICS RESEARCH RIG
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Airplanes - Radio Equipment - Equipment for seaplanes built at Naval Aircraft Factory, Phila., PA. F-5-L radio installation boat 3567 looking forward. After pilot's cockpit
Airplanes - Radio Equipment - Airplanes and parts manufactured for government use. F 5-L Antenna reel, installation for wireless. After pilot's cockpit. At Naval Aircraft Factory, Philadelphia, PA. U.S. Navy Department
Airplanes - Radio Equipment - Equipment for seaplanes built at Naval Aircraft Factory, Phila., PA. Radio transmitter in F-5-L Front view
Airplanes - Flight - The Torpedo-Aeroplane, A new arm precluded by Armistice. Among new devices which Armistice prevented Royal Air Force from putting into use against enemy was torpedo-aeroplane. Considered to be greater potential value than submarine, and would doubtless have proved astonishingly efficient. Central News Service
Aircraft. Naval. The Consolidated "Mariner" (PBM-3) serves the Navy as a patrol bomber or transport. It is an all-metal flying boat with high gull wings. It has a speed of over 200 miles per hour, a range of over 3,000 miles, a ceiling of over 15,000 feet and a load capacity of 20,000 pounds. The crew of nine men is armed with 50-caliber machine guns and bombs
Airplanes - Radio Equipment - Equipment for seaplanes built at Naval Aircraft Factory, Phila., PA. F-5-L radio installation showing rear view of transmitter
An air-to-air, three quarter front view of a Beech Aircraft built C-12F and a Lear Jet built C-21A and a McDonnell Douglas-built C-9A Nightingale aircraft, flying off the left wing of the C-12F. All aircraft are from the 375th Airlift Wing, Air Mobility Command and are flying over the St. Louis Arch, on the banks of the Mississippi River, and Busch stadium during a training mission
Aircraft. Naval. The Navy's "Coronado" (PB2Y-2) was designed by Consolidated for long-range patrol and transport missions. It is an all-metal, high-wing flying boat powered by four Pratt and Whitney engines of 1,200 horsepower each. Its speed is over 200 miles per hour, its range over 3,000 miles, its service ceiling approximately 20,000 feet, its load capacity 30,000 pounds. It carries a crew of ten men armed with 50-caliber machine guns and bombs
Aircraft. Naval. The Navy's "Coronado" (PB2Y-2) was designed by Consolidated for long-range patrol and transport missions. It is an all-metal, high-wing flying boat powered by four Pratt and Whitney engines of 1,200 horsepower each. Its speed is over 200 miles per hour, its range over 3,000 miles, its service ceiling approximately 20,000 feet, its load capacity 30,000 pounds. It carries a crew of ten men armed with 50-caliber machine guns and bombs
Airplanes - Radio Equipment - Navy's latest flying boat F-5-L showing wireless telephone and telegraph operator at work. Shows fuselage of Navy's latest flying beat F-5-L. The flying beat is fully equipped carrying the latest invention in the way of wireless telephone and telegraph. The machine carries four people and 230 aeroplane bombs, and is armed with 10 Lewis machine guns and one Davis gun. From Keystone View Co
Summary
Photographer: Keystone View Co.
Airplanes - Radio Equipment
Public domain photograph related to development of telegraph, free to use, no copyright restrictions image - Picryl description
The invention of the telephone still remains a confusing morass of claims and counterclaims, which were not clarified by the huge mass of lawsuits to resolve the patent claims of commercial competitors. The Bell and Edison patents, however, dominated telephone technology and were upheld by court decisions in the United States. Bell has most often been credited as the inventor of the first practical telephone. Alexander Graham Bell was the first to patent the telephone as an "apparatus for transmitting vocal or other sounds telegraphically". The telephone exchange was an idea of the Hungarian engineer Tivadar Puskás (1844 - 1893) in 1876, while he was working for Thomas Edison on a telegraph exchange. Before the invention of the telephone switchboard, pairs of telephones were connected directly with each other, practically functioned as an intercom. Although telephones devices were in use before the invention of the telephone exchange, their success and economical operation would have been impossible with the schema and structure of the contemporary telegraph systems. A telephone exchange was operated manually by operators, or automatically by machine switching. It interconnects individual phone lines to make calls between them. The first commercial telephone exchange was opened at New Haven, Connecticut, with 21 subscribers on 28 January 1878, in a storefront of the Boardman Building in New Haven, Connecticut. George W. Coy designed and built the world's first switchboard for commercial use. The District Telephone Company of New Haven went into operation with only twenty-one subscribers, who paid $1.50 per month, a one-night price for a room in a city-center hotel. Coy was inspired by Alexander Graham Bell's lecture at the Skiff Opera House in New Haven on 27 April 1877. In Bell's lecture, during which a three-way telephone connection with Hartford and Middletown, Connecticut, was demonstrated, he first discussed the idea of a telephone exchange for the conduct of business and trade.