US750244A - Fuse for electric circuits - Google Patents
Fuse for electric circuits Download PDFInfo
- Publication number
- US750244A US750244A US750244DA US750244A US 750244 A US750244 A US 750244A US 750244D A US750244D A US 750244DA US 750244 A US750244 A US 750244A
- Authority
- US
- United States
- Prior art keywords
- fuse
- clamp
- piece
- base
- electric circuits
- 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
- 210000001847 Jaw Anatomy 0.000 description 16
- 239000002184 metal Substances 0.000 description 8
- 239000004020 conductor Substances 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 210000001699 lower leg Anatomy 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/044—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
- H01H85/045—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified cartridge type
- H01H85/0454—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified cartridge type with screw-in type contacts
Definitions
- the present invention relates to cut-out fuses employed in electric lighting and like circuits, and has for its object to provide a simple and efficient fuse-piece-and its surrounding plug adapting the same for ready application to an ordinary incandescent-lamp socket and affording means for the ready and convenient replacement of the fuse-piece when occasion requires and with which the formation of a sparking connection between the respective terminals is avoided in a simple and eflicient manner, all as will hereinafter more fully appear and be more particularly pointed out in the claim.
- Figure 1 is a vertical sectional elevation at line a", Fig. 2, of the fuse-piece and its supporting-plug embodying the present improvements; Fig. 2, a plan view of the parts with the cap or cover piece removed; Fig. 3, a plan view of the fuse-piece in a detached condition.
- 1 represents a cylindrical insulating-base, of porcelain or other like insulating material, the outer surface of which is offset, as shown, and provided with upper and lower screw-threads 2 and 3 in separated relation and adapted for the independent attachment of the cap or cover and the conducting-sleeve, hereinafter described.
- Said sleeve 4 is a sleeve of metal spirally beaded, so as to form interior and exterior screw-threads, and adapted to screw upon the screw-threaded lower end of the base 1 as a permanent part thereof and constitute one of the contact-terminals of the present fuse-plug.
- Said sleeve 4 by means of its exterior screw-thread is adapted for ready engagement or attachment to the ordinary socket-piece in general use upon electric-lighting circuits by screwing Serial No. 138,394. (No model.)
- FIG. 6 is an annular cavity in the upper end of the fuse-base l and which is partitioned oil from a central cavity 7 in said base by an an nular wall or partition 8, as shown in Figs. 1 and 2.
- 1.0 is a clampingscrew passing through said plate-shaped jaws of the clamp 9 and adapted to clamp the jaws thereof firmly upon the curved fuse aforesaid.
- FIG. 11 is a central metal shank connecting the inner end of the clamp 9 with the plug 5 aforesaid, as shown in Fig. 1.
- a longitudinal clamp also formed by two superimposed plate-shaped jaws,the lower one of which is connected by a vertical extension 13 with the sleeve i aforesaid.
- Such clamp is arranged within the annular cavity 6 aforesaid at substantially right angles to the aforesaid companion clamp and is adapted to engage the other end of the curved fuse of the present invention.
- 1 1 is a clamping-screw passing through said plate-shaped jaws of the clamp 12 and adapted to clamp the jaws thereof firmly upon the curved fuse aforesaid.
- 16 is the fuse-piece of the present invention, formed of an open ring or loop shape, as more particularly shown in Fig. 3, and which is adapted to afford a maximum length of fuse with a minimum diameter of the holding-plug therefor.
- 17 is an inclosing cap-piece, the lower end or skirt of which is formed with screw-threads and adapted to screw upon the upper end of the base 1 to form an inclosure for the parts arranged in the upper part of said base, as heretofore described.
- a device of the class described comprising a cylindrical insulating-base having a metal sleeve on one end and having its opposite end diametrically enlarged, provided with a central cavity open on one side and an annular cavity surrounding the same and provided in its outer wall with a recess 15, a cap detachably secured on the enlarged end of the base and forming a closure therefor, a conductor 11 in a central bore of the base, having its inner end in the central cavity and its outer end forming an electrical terminal 5, clamp-plates connected to the inner end of the said conductor, having their inner ends disposed in the central cavity, said clamp-plates extend-
Description
PATENTE D JAN. 19, 1904.
E. C. PHILLIPS; FUSE FOR ELECTRIC CIRCUITS.
APPLICATION FILED JAN. 9, 1903.
10 MODEL.
I j/wood 4 u c v: Nonmi mans co worm mo WASHING) TN Patented January 19, 1904.
-UNITED STATES PATENT @FFIQE.
ELWOOD c. @PHILLIPS, or CHICAGO, ILLINOIS.
Fuse FOR ELECTRIC CIRCUITS.
SPECIFICATION forming ,part of Letters Patent No. 750,244, dated January 19, 1904.
Application, filed January 9, 1903 To all whon t it party concern:
Be it known that I, ELWooD C. PHILLIPs, a citizen of the United States of America, and a resident of Chicago, in-the county of Cook and State of Illinois, have invented certain new and useful Improvements in Fuses for Electric Circuits, of which the following is a specification.
The present invention relates to cut-out fuses employed in electric lighting and like circuits, and has for its object to provide a simple and efficient fuse-piece-and its surrounding plug adapting the same for ready application to an ordinary incandescent-lamp socket and affording means for the ready and convenient replacement of the fuse-piece when occasion requires and with which the formation of a sparking connection between the respective terminals is avoided in a simple and eflicient manner, all as will hereinafter more fully appear and be more particularly pointed out in the claim.
In the accompanying drawings, illustrative of the present invention, Figure 1 is a vertical sectional elevation at line a", Fig. 2, of the fuse-piece and its supporting-plug embodying the present improvements; Fig. 2, a plan view of the parts with the cap or cover piece removed; Fig. 3, a plan view of the fuse-piece in a detached condition.
Similar numerals of reference indicate like parts in the diflerent views.
Referring to the drawings, 1 represents a cylindrical insulating-base, of porcelain or other like insulating material, the outer surface of which is offset, as shown, and provided with upper and lower screw- threads 2 and 3 in separated relation and adapted for the independent attachment of the cap or cover and the conducting-sleeve, hereinafter described.
4 is a sleeve of metal spirally beaded, so as to form interior and exterior screw-threads, and adapted to screw upon the screw-threaded lower end of the base 1 as a permanent part thereof and constitute one of the contact-terminals of the present fuse-plug. Said sleeve 4: by means of its exterior screw-thread is adapted for ready engagement or attachment to the ordinary socket-piece in general use upon electric-lighting circuits by screwing Serial No. 138,394. (No model.)
into the correspondingly-formed bore of such socket-piece.
5 is a central metal plug fitted into an axial orifice of the base 1 to constitute the other terminal of the present fuse-block.
\Vith the described arrangement of the sleeve 4 and plug 5 a ready and convenient electrical connection can be had in the electric circuit to which it is intended to apply the present fuse, the exterior of the sleeve 4 contacting with a corresponding terminal or contact in the socket-piece aforesaid, while the plug 5 contacts with a corresponding terminal plug in such socket-piece.
6 is an annular cavity in the upper end of the fuse-base l and which is partitioned oil from a central cavity 7 in said base by an an nular wall or partition 8, as shown in Figs. 1 and 2.
9 is a horizontal clamp formed by two superimposed plate-shaped jaws which extend out radially from the central cavity 7 and through a side passage in the annular wall or partition 8, their outer ends adapted to engage one end of the curved fuse of the present invention. 1.0 is a clampingscrew passing through said plate-shaped jaws of the clamp 9 and adapted to clamp the jaws thereof firmly upon the curved fuse aforesaid.
11 is a central metal shank connecting the inner end of the clamp 9 with the plug 5 aforesaid, as shown in Fig. 1.
12 is a longitudinal clamp, also formed by two superimposed plate-shaped jaws,the lower one of which is connected by a vertical extension 13 with the sleeve i aforesaid. Such clamp is arranged within the annular cavity 6 aforesaid at substantially right angles to the aforesaid companion clamp and is adapted to engage the other end of the curved fuse of the present invention. 1 1 is a clamping-screw passing through said plate-shaped jaws of the clamp 12 and adapted to clamp the jaws thereof firmly upon the curved fuse aforesaid.
15 is a vertical groove in the vertical wall of the annular cavity 6, adapted to form a guide for the end of the movable jaw of the clamp 12, as shown, so as to maintain the same in proper relation with the fixed jaw of such clamp.
16 is the fuse-piece of the present invention, formed of an open ring or loop shape, as more particularly shown in Fig. 3, and which is adapted to afford a maximum length of fuse with a minimum diameter of the holding-plug therefor.
17 is an inclosing cap-piece, the lower end or skirt of which is formed with screw-threads and adapted to screw upon the upper end of the base 1 to form an inclosure for the parts arranged in the upper part of said base, as heretofore described.
Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is
A device of the class described, comprising a cylindrical insulating-base having a metal sleeve on one end and having its opposite end diametrically enlarged, provided with a central cavity open on one side and an annular cavity surrounding the same and provided in its outer wall with a recess 15, a cap detachably secured on the enlarged end of the base and forming a closure therefor, a conductor 11 in a central bore of the base, having its inner end in the central cavity and its outer end forming an electrical terminal 5, clamp-plates connected to the inner end of the said conductor, having their inner ends disposed in the central cavity, said clamp-plates extend-
Publications (1)
Publication Number | Publication Date |
---|---|
US750244A true US750244A (en) | 1904-01-19 |
Family
ID=2818737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US750244D Expired - Lifetime US750244A (en) | Fuse for electric circuits |
Country Status (1)
Country | Link |
---|---|
US (1) | US750244A (en) |
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0
- US US750244D patent/US750244A/en not_active Expired - Lifetime
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