US450292A - Circuit-closer - Google Patents
Circuit-closer Download PDFInfo
- Publication number
- US450292A US450292A US450292DA US450292A US 450292 A US450292 A US 450292A US 450292D A US450292D A US 450292DA US 450292 A US450292 A US 450292A
- Authority
- US
- United States
- Prior art keywords
- contact
- circuit
- terminals
- closer
- terminal
- 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
- 239000002184 metal Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 210000003813 Thumb Anatomy 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/18—Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
-
- 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
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
- H01H2009/048—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings using a sealing boot, e.g. the casing having separate elastic body surrounding the operating member and hermetically closing the opening for it
-
- 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
- H01H9/02—Bases, casings, or covers
- H01H9/0214—Hand-held casings
- H01H9/0228—Line cord switches
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/80—Parts, attachments, accessories and adjuncts
- Y10T70/8432—For key-operated mechanism
- Y10T70/8649—Keyhole covers
Definitions
- This invention has for its object mainly to provide a device for making and breaking' electric circuits, which shall be positive inits operation and not liable to be disturbed by foreign matter or particles of corroding metal interposed between the contact-surfaces.
- the invention consists in the combination, in an electric circuit, of two contact Surfaces or terminals arranged so as to be brought together and separated by a movement which causes the ccntactsurfaces to slide over eachother, whereby foreign matter and corroding particles are removed and the contact-surfaces kept polished.
- Figure 1 is au elevation of a central cross-section of the device embodying my invention and represents the circuit opened, the contactsurfaces being drawn apart.
- Fig. 2 is a similar view representing the contact-surfaces together, the circuit being in this case closed.
- Fig. 3 is a perspective view representing the device, the casing or shell being opened to illustrate the mechanism within.
- the device represented in the drawings is designed for combination with an electric cable. To that end itis provided with a central opening or hole for receiving the cable.
- the device is preferably formed in two parts in order to facilitate the combination thereof with the cable.
- the one part A is provided with the terminals c c.
- Said terminals are connected with the supporting-shell A by means of suitable connections, as screws b. They are preferably composed of spring metal and formed substantially as represented. Said terminals are connected with the electric conductor, so that the current is made to pass through said terminals when the same are closed together and is interrupted or opened when the terminals arc drawn apart.
- the part B of the casing ⁇ is provided with a suitable opening in which is located a plunger f, the bottom end of which bears upon the terminal e and the opposite end of which reaches outward through the shell, as represented.
- a suitable inward pressure applied by the thumb or the linger of the operator to said plunger forces downward the terminal e, whereby the said terminal is first made to contact with the terminal c, and next by a further movement to slide or move its own contact-surface over the adjacent surface of the terminal c, to facilitate which operation the terminals are preferably formed of spring metal, so as to yield to accommodate each other. Then pressure is removed from said plunger f, it is forced out.- ward by the tension of springterminal e, which litts to its normal position away from the terminal u, as shown in Fig. 1.
- the plunger f is represented as covered by a hood-.71., formed of rubber or other iiexible material, which serves to keep dust from entering the casing and yields to permit operation of the plunger, as described.
- a device formed as described is kept polished and in condition for opera-tion by the movement of the contact-surfaces consequent upon the closing of the circuit, substantially as described.
- the casing the stationary contact a, having a turned-up end, the movable contact c, ot' spring material, curving upwardly and extending over and above the edge of the contact a and normally out ot contact with the same, and the push-button to bear upon the curved spring-contact e to cause the saine to bear upon the edge of the contact a and slide thereon, substantially as described.
Landscapes
- Switch Cases, Indication, And Locking (AREA)
- Slide Switches (AREA)
Description
(No Model.)
W. C. JOHNSTON, Jr. CIRCUIT GLUSBR.
No. 450,292. Patented Apr. 14, 1891.
A mm
WVVNESSESL' |N\/ENTE1P\::
'me Nunn s Putas co., moro-umm mswwmm. n. c,
UNITED STATES PATENT OFFICE.
WUJAM C. JOHNSTON, JR., OF LYNN, MASSACHUSETTS.
ClRCUlT-CLOSER.
SPECIFICATION forming part of Letters Patent No. 450,292, dated April 14, 1891.
Application led December 17, 1888. Renewed February 3, 1891. Serial No. 379,977. (No model.)
To @ZZ whom, z't may concern;
Be it known that I, .VILLIAM C. JOHNSTON, Jr., of Lynn, in the county of Essex and Commonwealth of Massachusetts, have invented an Improved Device o`r Means for Making-and Breaking. Electric Circuits, of which the following, taken in connection with the accompanying drawings, is a specification.
This invention has for its object mainly to provide a device for making and breaking' electric circuits, which shall be positive inits operation and not liable to be disturbed by foreign matter or particles of corroding metal interposed between the contact-surfaces.
To this end the invention consists in the combination, in an electric circuit, of two contact Surfaces or terminals arranged so as to be brought together and separated by a movement which causes the ccntactsurfaces to slide over eachother, whereby foreign matter and corroding particles are removed and the contact-surfaces kept polished.
In the drawings, Figure 1 is au elevation of a central cross-section of the device embodying my invention and represents the circuit opened, the contactsurfaces being drawn apart. Fig. 2 is a similar view representing the contact-surfaces together, the circuit being in this case closed. Fig. 3 is a perspective view representing the device, the casing or shell being opened to illustrate the mechanism within.
The device represented in the drawings is designed for combination with an electric cable. To that end itis provided with a central opening or hole for receiving the cable.
The device is preferably formed in two parts in order to facilitate the combination thereof with the cable. The one part A is provided with the terminals c c. Said terminals are connected with the supporting-shell A by means of suitable connections, as screws b. They are preferably composed of spring metal and formed substantially as represented. Said terminals are connected with the electric conductor, so that the current is made to pass through said terminals when the same are closed together and is interrupted or opened when the terminals arc drawn apart. The part B of the casing` is provided with a suitable opening in which is located a plunger f, the bottom end of which bears upon the terminal e and the opposite end of which reaches outward through the shell, as represented. A suitable inward pressure applied by the thumb or the linger of the operator to said plunger forces downward the terminal e, whereby the said terminal is first made to contact with the terminal c, and next by a further movement to slide or move its own contact-surface over the adjacent surface of the terminal c, to facilitate which operation the terminals are preferably formed of spring metal, so as to yield to accommodate each other. Then pressure is removed from said plunger f, it is forced out.- ward by the tension of springterminal e, which litts to its normal position away from the terminal u, as shown in Fig. 1. The plunger f is represented as covered by a hood-.71., formed of rubber or other iiexible material, which serves to keep dust from entering the casing and yields to permit operation of the plunger, as described.
A device formed as described is kept polished and in condition for opera-tion by the movement of the contact-surfaces consequent upon the closing of the circuit, substantially as described.
I claim- In combination, the casing, the stationary contact a, having a turned-up end, the movable contact c, ot' spring material, curving upwardly and extending over and above the edge of the contact a and normally out ot contact with the same, and the push-button to bear upon the curved spring-contact e to cause the saine to bear upon the edge of the contact a and slide thereon, substantially as described.
Signed at Boston, Massachusetts, this 21st day of November, A. D. 1388.
TILLIAM C. JOHNSTON, JR.
Witnesses:
E. E. HAMILL, (I. l. lu'rirnn
Publications (1)
Publication Number | Publication Date |
---|---|
US450292A true US450292A (en) | 1891-04-14 |
Family
ID=2519175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US450292D Expired - Lifetime US450292A (en) | Circuit-closer |
Country Status (1)
Country | Link |
---|---|
US (1) | US450292A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2451176A (en) * | 1945-03-27 | 1948-10-12 | Robert Hetherington & Son Inc | Moisture-proofed plunger snap switch |
US2466414A (en) * | 1946-04-19 | 1949-04-05 | Joseph A Gits | Waterproof flashlight switch |
US2474762A (en) * | 1945-05-26 | 1949-06-28 | Edward V Sundt | Circuit breaker |
US2584883A (en) * | 1948-03-26 | 1952-02-05 | Eugene J Karsch | Accessory for automotive vehicles |
US3104299A (en) * | 1962-02-08 | 1963-09-17 | Chicago Dynamic Ind Inc | Actuating mechanism for a thumb wheel type switch |
-
0
- US US450292D patent/US450292A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2451176A (en) * | 1945-03-27 | 1948-10-12 | Robert Hetherington & Son Inc | Moisture-proofed plunger snap switch |
US2474762A (en) * | 1945-05-26 | 1949-06-28 | Edward V Sundt | Circuit breaker |
US2466414A (en) * | 1946-04-19 | 1949-04-05 | Joseph A Gits | Waterproof flashlight switch |
US2584883A (en) * | 1948-03-26 | 1952-02-05 | Eugene J Karsch | Accessory for automotive vehicles |
US3104299A (en) * | 1962-02-08 | 1963-09-17 | Chicago Dynamic Ind Inc | Actuating mechanism for a thumb wheel type switch |
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