|
The Leavitt canceling machine was the first successful mail-processing mechanization. Its use reduced the manual labor required to postmark and cancel mail pieces. This is a working patent model for the improved 1879 device.
|
www.arago.si.edu/index.asp?con=2&cmd=1&id=16929
|
|
|
Machine postmark - Wikipedia, the free encyclopedia
|
|
A machine postmark or machine cancellation is a postmark or cancellation on mail that is applied by a mechanical device rather than with the use of a handstamp. Nearly all machine-cancellation dev...
en.wikipedia.org/wiki/Machine_postmark
|
|
|
Perpetual Motion Machine ... A competitor to the linotype machine was the Mark Twain funded paige typesetter. ... The USPTO will not patent a perpetual motion machine.
|
inventors.about.com/od/pstartinventions/a/Inventions_P....
inventors.about.com/od/pstartinventions/a/Inventions_P.htm
|
|
|
#585,075, 6/22/1897, Postmarking and canceling machine ... William Barry - Mail-canceling machine ... Parts of a Sewing Machine - Hand Wheel...
|
inventors.about.com/od/blackinventors/a/black_historyB_...
inventors.about.com/od/blackinventors/a/black_historyB_2.htm
|
|
7. Even if Americans could write their letters, articles and books, they would not have been transported by mail because William Barry invented the Postmarking and Canceling Machine, William Purveys invented the Hand Stamp and Philip Downing invented the Letter Drop.
|
www.snopes.com/business/origins/blackinv.asp
|
|
The oil cup, which automatically delivers a steady trickle of lubricant to machine parts while the machine is running, predates McCoy's career; a description of one appears in the May 6, 1848 issue of Scientific American.
|
www33.brinkster.com/iiiii/inventions/
|
|
Theo's father also usually dropped off the office mail at a near by mailbox, but it was no longer there because Philip Downing, a black man, invented the letter drop mailbox and William Barry invented the postmarking and canceling machine.
|
www.godonthe.net/cme/history/blakfolk.htm
|
|
joke newsletter, joke of the day, joke archive, humor, funny, laugh, smile ... Even if Americans could write, they're efforts would not have been transported by mail becauseit was William Barry who invented the Postmarking and Canceling Machine, William Purvis, the Hand Stamp and Phillip Downing, the Letter Drop.
|
funandmagic.com/jokepage42.html
|
|
Based on various experiments being made by your Society, there are now additional resources available on-line to access articles and helpful material for machine cancel collectors. For instance, Bob Swanson has written an article on extracting cancellations (and other markings) from scans of covers and postcards.
|
www.machinecancel.org/
www.machinecancel.org/
|
|
