#Vibroplex bug serial numbers manual#
#Vibroplex bug serial numbers code#

Initial finding claimed that Martin's Autoplex used a swinging pendulum The court rulings were conflicting because the the mechanically energized swinging pendulum. Infringements by Martin but the court only granted them their 'Claim #11' However in the 1908 appeal, the court handed Mecograph a victory.of sorts.

Later, in 1907,Д«enjamin Bellows (Mecograph's owner) sued Martin and lost the initial suit, Martin's Single Lever was the first (orД®arliest) model 'bug' offered for sale. Questionable claims and vague mechanical drawings used in his application. However, Coffe's patent processing was delayed for two years because of

Patent had been filed almost four months earlier than Martin's. The patent for the Martin's Single Lever was granted in 1904.

#Vibroplex bug serial numbers manual#

Pendulum to create a dot stream with manual creation of dashes, althoughДЄ somewhat similar, earlier patent filing had been submitted by William 'Vibroplex' which utilized a horizontal, weighted, swinging InДЎ904, Martin developed the basic idea for all 'modern' bugs - the Solenoids to power the dot stream but dashes were produced manually. Was the earliest of the bug manufacturers, producing the Autoplex Transmitters, Vibroplex keys started to then be used as 'radio keys.'В Vibroplex's 125' and, since theД¬urrent requirements for tube transmitters was far less than spark InДЎ921, Vibroplex increased the contact size to. Tube transmitters started to gain popularity in the very early twenties. That limited their installation to fairly large hand keys. Most of the spark transmitters in use before that time required largeД¬urrent capacity which was accomplished using very large key contacts Strictly for use on telegraph landlines as the contacts were only. Red lightning bug as their logo (post-WWI.)ДЄ note on early Vibroplex keys.those made before about 1921 were Vibroplex embraced the 'bug' reference and incorporated a Eventually, the 'bug' won and the term stuck becomingД¬onnotations.

As more and more semi-automatic keys appearedДЄnd were in use, the derogatory reference to the operator was applied to In their opinion only a 'bug' would use a semi-automatic key.ДЄt the time, 'bug' was a term of contempt for a 'lid' or 'plug' operator Operators' contempt for any type of key other than the traditional hand The nickname 'Bug' probably originated with experienced landline Tried to invent different methods of generating a reliable 'dot stream'Д«ut Martin's 'Original' (Single Lever) design was the most reliable and James Albright and Horace Martin bought Mecograph in 1913. Coffe (four months before Martin) and, in 1904-5, CoffeДЄnd Benjamin Bellows formed the MecographД¬ompany. The mechanically-actuated, pendulum-type dot mechanism was initially submitted for a 'Martin Vibroplex' keys introduced in 1904, patented by Horace Mechanical semi-automatic telegraph keys date to the beginning of the twentieth-century with the

#Vibroplex bug serial numbers code#

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