US500456A - Alexander wurts - Google Patents
Alexander wurts Download PDFInfo
- Publication number
- US500456A US500456A US500456DA US500456A US 500456 A US500456 A US 500456A US 500456D A US500456D A US 500456DA US 500456 A US500456 A US 500456A
- Authority
- US
- United States
- Prior art keywords
- lever
- circuit
- wire
- alexander
- spring
- 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
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- 230000002159 abnormal effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 230000000266 injurious Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003334 potential Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/10—Adaptation for built-in fuses
Definitions
- WITNESSES ATTORNEY mr. roams PETERS c0. FHUTOJJYNQ" wmimm'om n. c.
- My invention relates to means for auto matically opening the circuit of a constant potential machine, when the current becomes excessive.
- the object of my invention is to provide a device of this character wherein all danger of arcing at contacts is obviated.
- the circuit to be interrupted on the occurrence of excessive current is shown at 1, and includes the coils-of the solenoid or magnet 2.
- This circuit also includes the contact springs 3, connection between which is normally es tablished by the pivoted conducting lever at.
- a spring 5, is so connected to this lever as to tend to pull it with violence out of contact with the springs 3, and a handle 6 is preferably employed to replace the lever when desired.
- This handle is, of course preferably insulated from the lever 4.
- Various forms of retracting springs may be used at will. I have shown another form in dotted lines at 7.
- An armature 8 is actuated by the magnetism of the coils 2, and is adapted,when impelled by the occurrence of excessive current in said coils, to bring a cross bar or other projection 9 into contact with the projection 10.
- This position is normally avoided by the pressure of the spring 14.
- This projection 10 is one arm of a bell lever catch 11, the other arm of which is hooked, and engages the lever 4, preventing its movement under the influence of the spring 5 or 7. ⁇ Vhen, therefore, the cross piece 9 strikes the bell crank 11, the latter turns on its pivot, and releases the lever 4, which isimmediately withdrawn from contact Serial No. 460,051. (No model.)
- the excessive current destroys the wire 13, and the circuit is thus entirely interrupted.
- the springs 12 cause the two ends thereof to fly apart and prevent formation of any are carried by the vapor of the fuse, as might perhaps otherwise occur.
- ⁇ Vhat I claim is- 1.
- a fixed contact point a movable conducting part making normal contact therewith, a wire of fusible metal in shunt around said parts, and means whereby the parts are automatically separated on the occurrence of an abnormal current, substantially as described.
- a fixed contact point a movable conducting part making normal contact therewith, a wire of fusible metal in shunt around said parts, said wire being supported by two spring arms holding it taut; and means whereby the parts are automatically separated on the occurrence of an abnormal current, substantially as described.
Landscapes
- Breakers (AREA)
Description
(No Model.)
A. WURTS. AUTOMATIC CIRCUIT BREAKER.
No. 500,456. Patented June 27, 1893.
WITNESSES ATTORNEY mr. roams PETERS c0. FHUTOJJYNQ" wmimm'om n. c.
UNITED STATES PATENT OFFICE.
ALEXANDER IVURTS, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE WVESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, OF SAME PLACE.
AUTOMATIC CIRCUIT-BREAKER.
SPECIFICATION forming part of Letters Patent No. 500,456, dated June 27, 1893.
Application filed October 26, 1892.
To all whom it may concern:
Be it known that 1, ALEXANDER \VURTS, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and use ful Improvement in Automatic Circuit-Breakers, (Case No. 510,) of which the following is a specification.
My invention relates to means for auto matically opening the circuit of a constant potential machine, when the current becomes excessive.
The object of my invention is to provide a device of this character wherein all danger of arcing at contacts is obviated.
The nature of my invention clearly-appears in the accompanying drawings, wherein Figure 1 is a plan view of my circuit-breaker, and Fig. 2 is a side view of the same.
The circuit to be interrupted on the occurrence of excessive current is shown at 1, and includes the coils-of the solenoid or magnet 2. This circuit also includes the contact springs 3, connection between which is normally es tablished by the pivoted conducting lever at. A spring 5, is so connected to this lever as to tend to pull it with violence out of contact with the springs 3, and a handle 6 is preferably employed to replace the lever when desired. This handle is, of course preferably insulated from the lever 4. Various forms of retracting springs may be used at will. I have shown another form in dotted lines at 7. An armature 8 is actuated by the magnetism of the coils 2, and is adapted,when impelled by the occurrence of excessive current in said coils, to bring a cross bar or other projection 9 into contact with the projection 10. This position is normally avoided by the pressure of the spring 14. This projection 10 is one arm of a bell lever catch 11, the other arm of which is hooked, and engages the lever 4, preventing its movement under the influence of the spring 5 or 7. \Vhen, therefore, the cross piece 9 strikes the bell crank 11, the latter turns on its pivot, and releases the lever 4, which isimmediately withdrawn from contact Serial No. 460,051. (No model.)
with the springs 3, thus breaking the circuit. Such a form of circuit breaker, where high potentials are employed would be objectionable on account of the injurious arcs which occur at the points of separation. In order to prevent the occurrence of such arcs,I provide the following device. Connected electrically to each contact spring 3 is a spring arm, 12. Looped over these spring arms is a fine fusible wire 13, which thus forms a shunt around the lever t. The spring arms hold the fusible wire taut by their resiliency. NVhen the current is interrupted at 3, it is forced to How through the wire 13. Thus forthe small portion of time during which the lever 4 is within arcing distance of the points 3, a path is provided for the current and no arc is formed. At the next moment, however, the excessive current destroys the wire 13, and the circuit is thus entirely interrupted. As the wire 13 is fused apart, the springs 12 cause the two ends thereof to fly apart and prevent formation of any are carried by the vapor of the fuse, as might perhaps otherwise occur.
\Vhat I claim is- 1. A fixed contact point, a movable conducting part making normal contact therewith, a wire of fusible metal in shunt around said parts, and means whereby the parts are automatically separated on the occurrence of an abnormal current, substantially as described.
2. A fixed contact point, a movable conducting part making normal contact therewith, a wire of fusible metal in shunt around said parts, said wire being supported by two spring arms holding it taut; and means whereby the parts are automatically separated on the occurrence of an abnormal current, substantially as described.
In testimony whereof I have hereunto subscribed my name this .Zetth day of October, A. D. 1892.
ALEXANDER IVURTS.
Witnesses:
JAMES WM. SMITH, HAROLD S. MACKAYE.
Publications (1)
Publication Number | Publication Date |
---|---|
US500456A true US500456A (en) | 1893-06-27 |
Family
ID=2569291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US500456D Expired - Lifetime US500456A (en) | Alexander wurts |
Country Status (1)
Country | Link |
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US (1) | US500456A (en) |
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- US US500456D patent/US500456A/en not_active Expired - Lifetime
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