Dorsey except that he was black. Schumann submitted a patent to the u s.

Door Lock History When Did People Invent Door Lock

Seriously few people in those days were literate and writing was expensive.

Who invented the door lock. Where did he live. Patent entries for the year 1878 when a patent for improvements on a door closing device was issued to a man named osbourn dorsey. Manufactured and sold by linus yale jr.

This was an improvement over the 4000 year old bolt invented by the chinese. Was inspired by the original 1840s pin tumbler lock designed by his father thus inventing and patenting a smaller flat key with serrated edges as well as pins of varying lengths within the lock itself the same design of the pin tumbler lock which still remains in use today. Patent office for a safety door latch designed to prevent children from opening car doors.

This new wave of lock innovation was led by the inventions of robert barronin 1778 double acting tumbler lock joseph bramah in 1784 bramah lock unpickable for 67 years jeremiah chubb in 1818 detector lock with high internal security linus yale sr. Treasury department for all the new mints custom houses and sub treasuries in the united states. The first documented invention of the doorknob appears in u s.

Even knowing who the kings were is difficult. Showing the advantages attending the use of the magic infallible bank lock and the patent door lock invented by linus yale jr. Very little has been found out about mr.

Cars have had locking doors almost as long as they ve had doors but schumann s design added a layered complexity to locks not unlike the safety features added to disposable lighters. In 1848 first pin tumbler lock james sargent in 1857 and 1873 first combination lock and first time lock mechanism samuel segal in 1916 first jemmy proof lock and harry soref in 1924 first padlock. The beginning of this series of innovations took place in 1778 when robert barron created a lock that required the internal lock pins to be lifted to specific varying heights to disengage the lock mechanism.

Martin s lock consisted of a cylinder and spiral spring coiled around a metal pin the forerunner of modern door locks. And his patent chilled iron burglar proof bank doors vaults and safes which are adopted by the u s. Martin african american inventor patented the lock july 21 1889.

In 1861 linus yale jr. A dissertation on locks and lock picking and the principles of burglar proofing. Details like who invented what were not kept.

This brought upon many innovations and improvements within the security industry as well as door lock technology. Somewhat later locks still of wood used tumblers. National inventors hall of fame inductee linus yale who invented the door lock made radical innovations that were the basis for the modern key and tumbler lock.

The key was a wood stick with grooves cut in it. And g collins. Jul 22 2012 w.

On march 7 1949 joseph m. Had he always been free or was he recently freed from slavery.