Kleinschmidt Keyboard Perforator

The Kleinschmidt keyboard perforator is a

telegraph Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas ...

instrument invented by

Edward Kleinschmidt Edward Ernst Kleinschmidt (September 9, 1876 – August 22, 1977) was one of the inventors of the teleprinter, and was a prolific inventor who obtained 118 patents in the course of his 101-year life. Career Born in Bremen, Germany, in 1876, Klein ...

which prepares

punched tape Five- and eight-hole punched paper tape Paper tape reader on the Harwell computer with a small piece of five-hole tape connected in a circle – creating a physical program loop Punched tape or perforated paper tape is a form of data storage ...

for telegraph transmission. A

QWERTY QWERTY () is a keyboard layout for Latin-script alphabets. The name comes from the order of the first six keys on the top left letter row of the keyboard ( ). The QWERTY design is based on a layout created for the Sholes and Glidden ty ...

keyboard operate

hole punch A hole punch, also known as hole puncher, or paper puncher, is an office tool that is used to create holes in sheets of paper, often for the purpose of collecting the sheets in a binder or folder. A ''hole punch'' can also refer to similar t ...

es that prepare a Wheatstone slip. Each

Morse code Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called ''dots'' and ''dashes'', or ''dits'' and ''dahs''. Morse code is named after Samuel Morse, one ...

of the dots and dashes for the letter is selected by projecting tongues on the key bar. The centre holes used for the paper feed are punched first, then the lower holes, and then the upper holes. The upper holes are the mark holes