US180839A - Improvement in telegraph-keys - Google Patents

Improvement in telegraph-keys Download PDF

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Publication number
US180839A
US180839A US180839DA US180839A US 180839 A US180839 A US 180839A US 180839D A US180839D A US 180839DA US 180839 A US180839 A US 180839A
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Prior art keywords
keys
telegraph
key
improvement
spring
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Expired - Lifetime
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/04—Apparatus or circuits at the transmitting end
    • H04L15/06—Apparatus or circuits at the transmitting end with a restricted number of keys, e.g. separate key for each type of code element
    • H04L15/08—Apparatus or circuits at the transmitting end with a restricted number of keys, e.g. separate key for each type of code element with a single key which transmits dots in one position and dashes in a second position

Definitions

  • the rear ends of the keys 0 and D bear by Similar letters of reference indicate correset-screws 6 against a double post, F, that is sponding parts. centrally split or divided by an insulating-
  • the object of my invention is to furnish for layer, which serves to cut out the key by telegraph-operators an improved duplex key, connection with the main line and keys.
  • the by which the time. taken up by the upward tension of the spring d is regulated by the motion of the present key may be utilized, adjustment of the set-screws in the customand the sending of the messages be accomary manner.
  • the duplex key admits with plished inabout half the former time, and little practice double transmitting speed, as with greater facility and ease.
  • the invention consists of two horizontal work of the telegraph-operator to a considswinging and spring-acted keys, whose conerable extent. tact-points alternately close the circuit by Having thus described my invention,Iclaim contact with an intermediate post, the keys as new and desire to secure by Letters Patbeing cut out, when not in use, by the rear set-screws bearing against a double post with dividing insulating-layer.
  • A represents the baseframe of the key;
  • B the upright metallic frame, to which the horizontally-swinging keys 0 and D are pivoted by steel pins to.
  • the keys 0- and D are provided-at the outer ends with the usual buttons b, by which the keys are operated by being swung by thumb and forefinger from one side to the other in place of the up-and-down motion of the common key.
  • a duplex telegraph-key made of horizontally-swinging and spring-acted lever-keys, that close the circuit alternately, substantially in the manner and for the purpose set forth.
  • PAUL GOEPEL T. B. MOSHER.
  • the keys are jointly connected by a spiral

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input From Keyboards Or The Like (AREA)

Description

J. O. BYRNS.
TELEGRAPH-KEY.
No.180,839. Patented Aug.8,1876.
UNITED STATES PATENT OFFICE.
JAMES O. BYRNS, OF JERSEY CITY, NEW JERSEY.
IMPROVEMENT IN TELEGRAPH-KEYS.
Specification forming part of Letters Patent No. 180,839, dated August 8, 1876; application filed May 22, 1876.
To all whom it may concern: spring, 01, that interrupts the contact of the Be it known that I, JAMES O. BYRNS, of key-points with the postE,which is connected Jersey City, in the county of Hudson and to one pole, while the upright support B is State of New Jersey, have invented a new connected to the other pole, of the battery. and Improved Telegraph-Key, of which the The contact of either key closes the circuit, following is a specification: so that by the alternate working of the keys In the accompanying drawing, Figurelrepthe motion of the hand is utilized in both resents a top view, and Fig. 2 a vertical transdirections for the transmission of telegraphic verse section on line m as, Fig. 1, of my imcharacters. proved telegraph-key. The rear ends of the keys 0 and D bear by Similar letters of reference indicate correset-screws 6 against a double post, F, that is sponding parts. centrally split or divided by an insulating- The object of my invention is to furnish for layer, which serves to cut out the key by telegraph-operators an improved duplex key, connection with the main line and keys. The by which the time. taken up by the upward tension of the spring d is regulated by the motion of the present key may be utilized, adjustment of the set-screws in the customand the sending of the messages be accomary manner. The duplex key admits with plished inabout half the former time, and little practice double transmitting speed, as with greater facility and ease. compared to the single key, and facilitates the The invention consists of two horizontal work of the telegraph-operator to a considswinging and spring-acted keys, whose conerable extent. tact-points alternately close the circuit by Having thus described my invention,Iclaim contact with an intermediate post, the keys as new and desire to secure by Letters Patbeing cut out, when not in use, by the rear set-screws bearing against a double post with dividing insulating-layer. In the drawings, A represents the baseframe of the key; B, the upright metallic frame, to which the horizontally-swinging keys 0 and D are pivoted by steel pins to. The keys 0- and D are provided-at the outer ends with the usual buttons b, by which the keys are operated by being swung by thumb and forefinger from one side to the other in place of the up-and-down motion of the common key.
exit- 1. A duplex telegraph-key made of horizontally-swinging and spring-acted lever-keys, that close the circuit alternately, substantially in the manner and for the purpose set forth.
2. The combination of two horizontallyswinging and spring-acted keys, by rear setscrews, with a double centrally insulated post, substantially as shown and described.
JAMES O. BYRNS.
Witnesses:
PAUL GOEPEL, T. B. MOSHER.
The keys are jointly connected by a spiral
US180839D Improvement in telegraph-keys Expired - Lifetime US180839A (en)

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