US351485A - Telegraph-key - Google Patents
Telegraph-key Download PDFInfo
- Publication number
- US351485A US351485A US351485DA US351485A US 351485 A US351485 A US 351485A US 351485D A US351485D A US 351485DA US 351485 A US351485 A US 351485A
- Authority
- US
- United States
- Prior art keywords
- key
- arm
- base
- stud
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000003467 diminishing Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
Images
Classifications
-
- 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
- Figure 1 is a side elevation, partly in section.
- Fig. 2 is a plan view.
- Fig. 3 is an inverted plan view.
- the object of my invention is to provide a telegraph-key in which a slight movement of the fingers will produce a greater movement in the contact-point of the key, thereby insuring greater certainty and rapidity in writing and diminishing the movement of the hand required for operating the key.
- My invention consists of a key having short and long arms, the short arm being provided with a finger-piece, the longer arm carrying a contact-point, and in the combination, with the key arranged in this manner, of a switch and conductor for conveying the current froni the switch to the stationary contact-point of the key.
- the base A whichsupports all of the parts of the key, is recessed on its under surface and supports the standards -]3 for receiving the screws 0, in the inner ends of which are journaled the trunnions D of the key E.
- the key. E is a two-armed lever, with a short arm, a, projecting beyond the end of the base A and provided with the usual finger-piece, I), the long arm a projecting in the opposite direction from the trunnions, and carrying the contactpoint d.
- the long arm of the key is provided with an adjusting screw, F, which passes downwardthrough the key and touches the base A when the key makes the back stroke. The adjusting-screw F is prevented from becoming accidentally loosened by the jam-nut 6.
- the adjusting-screw f is received in the short arm a, and is bored axially to receive one end of the spiral spring 9, the opposite end of which extends into a cavity in the base A.
- the screw f is prevented from accidental loosening by the jam-nut h.
- a contact-point, d by the right-angled arm G, which is formed integrally with the screwthreaded stud H, the arm G and stud H being insulated from the base A by the collar 2' and In the opposite by the insulating-washer j. end of the baseis secured a stud, I, which is insulated from the base by the rubber collar k.
- the stud I supports the circuit-closin g contact Z, and is connected electrically with the stud H and arm G by the-bar m, which is secured in place by riveting the stud I and shoulder of the stud H- down upon the bar.
- the bar at is separated from the base by insulation, and is enlarged and apertured at a point below the trunnions D, to allow the binding-stud J to project from the under surface of the base.
- a circuit-closing switch, K To the base A is pivoted a circuit-closing switch, K, provided with a handle, a, of insulating material, which reaches upwardabove the end of the top of the finger-piece b, within convenient reach of the finger of the operator.
- the circuit-closer K is received under the contact Z when it is desired to close the circuit.
- studs H J are provided with wing-nuts 0, by
- the arm a of the key-lever short and the arm along that the movement of the hand required to operate the key will be very much reduced, and'the contact between the contact-points d and d may be more rapidly and certainly made.
- the key-lever may be made lighter, thus requiring less spring-power to move it after being operated by the fingers. This construction also reduces the wear upon the trunnions orpivots of the key. It secures awide separation of the contact-points, thus avoiding sparking at the contact-points and consequent adhesion of the point-s.
- the base A having its under surface recessed to receive the bar at, combined with the arm G, having a contactpoint key-lever, the stud I, bar m, connecting stud-I and arm G, and the circuit-closer,-substantially as set forth.
Description
v (No Model.) I
J. M. BIGGS.
TELEGRAPH KEY. No. 351,485. Patented Oct. 26. 1886.
INVENTOR l A TTORNEYS.
WITNESSES UNITED STATES PATE T FFICEO JOHN MARIONBIGGS, OFLOUISVILLE, KENTUCKY.
TELEGRAPH-KEY.
SPECIFICATION forming part of Letters Patent No. 351,485, dated October 26, 1886. Application filed May 10, 1886. Serial No. 201,708. (No model.)
To a, whom it may concern:
Be it known that I, J OHN MARION BIGGS, of Louisville, in the county of Jefferson and State of Kentucky, have invented a new and useful Improvement in Telegraph-Keys, of which the following is a specification, reference being had to the annexed drawings, forminga part thereof, in which? Figure 1 is a side elevation, partly in section. Fig. 2 is a plan view. Fig. 3 is an inverted plan view.
Similar letters of reference indicate corresponding parts in the different figures of the drawings.
The object of my invention is to provide a telegraph-key in which a slight movement of the fingers will produce a greater movement in the contact-point of the key, thereby insuring greater certainty and rapidity in writing and diminishing the movement of the hand required for operating the key.
My invention consists of a key having short and long arms, the short arm being provided with a finger-piece, the longer arm carrying a contact-point, and in the combination, with the key arranged in this manner, of a switch and conductor for conveying the current froni the switch to the stationary contact-point of the key.
The base A, whichsupports all of the parts of the key, is recessed on its under surface and supports the standards -]3 for receiving the screws 0, in the inner ends of which are journaled the trunnions D of the key E. The key. E is a two-armed lever, with a short arm, a, projecting beyond the end of the base A and provided with the usual finger-piece, I), the long arm a projecting in the opposite direction from the trunnions, and carrying the contactpoint d. The long arm of the key is provided with an adjusting screw, F, which passes downwardthrough the key and touches the base A when the key makes the back stroke. The adjusting-screw F is prevented from becoming accidentally loosened by the jam-nut 6.
Between the trunnions D and the fingerpiece b the adjusting-screw f is received in the short arm a, and is bored axially to receive one end of the spiral spring 9, the opposite end of which extends into a cavity in the base A.
The screw f is prevented from accidental loosening by the jam-nut h.
Above the contact-point d is supported a contact-point, d, by the right-angled arm G, which is formed integrally with the screwthreaded stud H, the arm G and stud H being insulated from the base A by the collar 2' and In the opposite by the insulating-washer j. end of the baseis secured a stud, I, which is insulated from the base by the rubber collar k. The stud I supports the circuit-closin g contact Z, and is connected electrically with the stud H and arm G by the-bar m, which is secured in place by riveting the stud I and shoulder of the stud H- down upon the bar. The bar at is separated from the base by insulation, and is enlarged and apertured at a point below the trunnions D, to allow the binding-stud J to project from the under surface of the base.
To the base A is pivoted a circuit-closing switch, K, provided with a handle, a, of insulating material, which reaches upwardabove the end of the top of the finger-piece b, within convenient reach of the finger of the operator. The circuit-closer K is received under the contact Z when it is desired to close the circuit.
The
studs H J are provided with wing-nuts 0, by
means of which the keyis clamped to the table.
It will be seen that by making the arm a of the key-lever short and the arm along that the movement of the hand required to operate the key will be very much reduced, and'the contact between the contact-points d and d may be more rapidly and certainly made. The key-lever may be made lighter, thus requiring less spring-power to move it after being operated by the fingers. This construction also reduces the wear upon the trunnions orpivots of the key. It secures awide separation of the contact-points, thus avoiding sparking at the contact-points and consequent adhesion of the point-s.
Having thus described my inveution,what I claim as new, and desire to secure by Letters Patent, is
1. In a telegraph-key, the base A, having its under surface recessed to receive the bar at, combined with the arm G, having a contactpoint key-lever, the stud I, bar m, connecting stud-I and arm G, and the circuit-closer,-substantially as set forth.
2. In atelegraph-key, the combination of the key-lever E, provided with the long arm 0 and the short arm a, the adj usting-screw 13, inserted in the longer arm, the adjusting-screw f, in-
serted in the shorter arm, the spring placed between the adjusting-screw f and the base,
the base A, the arm G, having threaded stud 5 H and secured to the base, but insulated therefrom, the contact-points (1 d carried by the arm and the key-lever, the stud I, connected electrically with the arm G, insulated from the base A and supporting the cireuitclosiug cou- IO tact-point Z, and the circuit closing key K,
pivoted to the base A and adapted to engage the circuit-closing contaet-point Z, substantially as herein shown and described.
3. The combination of the base A, the key- [5 lever pivotally supported thereon, the arm G,
having threaded stud II and provided with a contact point, and secured to but insulated from the base, substantially as set forth.
4-. In a telegraph-key, the combination of the base, the key-lever, the arm G, provided with 20 a contact-point and having a threaded stud, H, the stud I, having a contact, the bar m, conmeeting the studs H and I, and the circuit-closing switch pivoted to the base andmovable into contact with the stud I, substantially as 25 set forth.
J OHN MARION BIGGS.
W i tnessos J. SPEED PEAY, E. M. FREER.
Publications (1)
Publication Number | Publication Date |
---|---|
US351485A true US351485A (en) | 1886-10-26 |
Family
ID=2420544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US351485D Expired - Lifetime US351485A (en) | Telegraph-key |
Country Status (1)
Country | Link |
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US (1) | US351485A (en) |
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0
- US US351485D patent/US351485A/en not_active Expired - Lifetime
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