US427823A - Fuse-plug - Google Patents
Fuse-plug Download PDFInfo
- Publication number
- US427823A US427823A US427823DA US427823A US 427823 A US427823 A US 427823A US 427823D A US427823D A US 427823DA US 427823 A US427823 A US 427823A
- Authority
- US
- United States
- Prior art keywords
- plug
- terminals
- strip
- fusible
- fuse
- 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 16
- 229910052751 metal Inorganic materials 0.000 description 16
- 239000000463 material Substances 0.000 description 12
- 239000011505 plaster Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 210000002356 Skeleton Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000011507 gypsum plaster Substances 0.000 description 2
- 238000002844 melting Methods 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
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
Definitions
- Figure 1 is a plan of a cut-out block with two of my improved plugs.
- Fig. 2 is a section on line 2 2 of Fig. 1, and Fig. 3 asection 011 line 3 3 of Fig. 1.
- Fig. t is a perspective view of the cutout plug.
- Cut-out plugs consist, essentially, of a strip of fusible metal which, when the current exceeds the desired amount, is melted, thereby breaking the circuit, and my improved plug is like others in this respect. Ileretofore, however, these plugs have been made of material which (when the strip of fusible metal is melted) is heated by the electric are which is then established for a moment and gives out a gas which tends to maintain the are, and thus continue the action of the current for a time often long enough to set fire to the material adjacent to the fused metal.
- My invention is acut-out plug in which the fusible metal is entirely inclosed in plaster or equivalent non-combustible material, the fusible metal beingsurrounded by the plaster, and I have found that with such plugs the metal can be melted by a current heavier than the plug will carry and the circuit broken without producing any visible effect to the exterior to the plug, for, as there is no combustible material whatever which can be acted upon by the small are produced, that are at once disappears without breaking the plug or producing any effect outside of it.
- a a are the usual copper terminals, with projections b I), which serve to anchor the terminals to the plaster-of-paris D.
- the projections Z) are conveniently formed by cutting the terminals, as shown in the perspective view, and bending inwardly the cut portionsthat is, the projections 1).
- These terminals to a are electrically connected in the usual way to the fusible strip 0, which preferably is inclosed by the tube (1.
- These parts are then secured in a suitable mold, which is filled with plaster, which,when dry, is properly varnished, completing the plug.
- the tube (1, I prefer to make of glass, and, while I consider it desirable, I do not regard it as essential.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Description
(No Model.)
W. A. ANTHONY. i
FUSE PLUG. No. 427,823 Patented May 13, 1890.
\W'HQEQSES. l p/125F131.
,jwwzew MA MWM M UNITED STATES PATENT OFFICE.
\VILLIAM A. ANTHONY, OF HARTFORD, ASSIGNOR TO THE MATIIER ELECTRIC COMPANY, OF MANCHESTER, CONNECTICUT.
FUSE-PLUG.
SPECIFICATION forming part of Letters Patent No. 427,823, dated May 13, 1890.
Application filed February 23, 1889. Serial No. 300,817- (No model.
To all whom it may concern:
Be it known that I, ILLIAM A. ANTHONY, of Hartford, Hartford county, and State of Connecticut, have invented an Improved Cut- Out Plug, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof, in which Figure 1 is a plan of a cut-out block with two of my improved plugs. Fig. 2 is a section on line 2 2 of Fig. 1, and Fig. 3 asection 011 line 3 3 of Fig. 1. Fig. t is a perspective view of the cutout plug.
Cut-out plugs consist, essentially, of a strip of fusible metal which, when the current exceeds the desired amount, is melted, thereby breaking the circuit, and my improved plug is like others in this respect. Ileretofore, however, these plugs have been made of material which (when the strip of fusible metal is melted) is heated by the electric are which is then established for a moment and gives out a gas which tends to maintain the are, and thus continue the action of the current for a time often long enough to set fire to the material adjacent to the fused metal.
I have discovered that strips of fusible metal may be heated in the open air without danger, even when the current is very much more than they can carry without melting, for the are which is established disappears at oncewithout harmful results; but when some fusible metal is stretched over a wooden block or the like and covered or put through a hole bored in combustible material it will, when melted, generate gas which will maintain the arc and produce a large flame, issuing out of any little openings there may be and continuing long enough to set lire to the material.
My invention is acut-out plug in which the fusible metal is entirely inclosed in plaster or equivalent non-combustible material, the fusible metal beingsurrounded by the plaster, and I have found that with such plugs the metal can be melted by a current heavier than the plug will carry and the circuit broken without producing any visible effect to the exterior to the plug, for, as there is no combustible material whatever which can be acted upon by the small are produced, that are at once disappears without breaking the plug or producing any effect outside of it.
In the drawings, a a are the usual copper terminals, with projections b I), which serve to anchor the terminals to the plaster-of-paris D. The projections Z) are conveniently formed by cutting the terminals, as shown in the perspective view, and bending inwardly the cut portionsthat is, the projections 1). These terminals to a are electrically connected in the usual way to the fusible strip 0, which preferably is inclosed by the tube (1. These parts are then secured in a suitable mold, which is filled with plaster, which,when dry, is properly varnished, completing the plug. The tube (1, I prefer to make of glass, and, while I consider it desirable, I do not regard it as essential.
I do not claim, broadly, the combination of terminals and a fusible strip with a support, for such elements have before been combined in many ways; but, so far as I have any reason to believe, I am the first to combine the terminals and strip with a body 1) which is formed about the fusible strip and about projections from the terminals, these projections serving to anchor the terminals to the body; and my plug is in itself wholly new, in that the strip and terminals form a skeleton frame preferably with the tube d, about which the body D is formed in a plastic state, so that when the body D hardens the combination between it and the strips embedded in it is radically unlike that in any other cut-out plug known to me hat I claim as my invention is 1. The cut-out plug above described, composed of the body portion'D, the terminals (1, with anchoring-strips l), and the fusible strip 0, the strips being embedded, substantially as shown, in the body portion D, all substantially as described.
2. The cut-out plug above described, composed of the body portion D, the terminals a, with auxiliary strips 1), the fusible strip 0, and tube (I, the strips and tube being embedded, substantially as shown, in the body portion D, all substantially as described.
WILLIAM A. ANTHONY.
Witnesses:
.ALFD. P. CLARK,
E. E. SEcAn.
Publications (1)
Publication Number | Publication Date |
---|---|
US427823A true US427823A (en) | 1890-05-13 |
Family
ID=2496733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US427823D Expired - Lifetime US427823A (en) | Fuse-plug |
Country Status (1)
Country | Link |
---|---|
US (1) | US427823A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030136313A1 (en) * | 2002-01-23 | 2003-07-24 | Griepentrog Dennis G. | Variable configuration desk system with power and communication capability |
-
0
- US US427823D patent/US427823A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030136313A1 (en) * | 2002-01-23 | 2003-07-24 | Griepentrog Dennis G. | Variable configuration desk system with power and communication capability |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US427823A (en) | Fuse-plug | |
US901261A (en) | Safety-fuse. | |
US348048A (en) | Charles g | |
US1278893A (en) | Inclosed safety-fuse. | |
US259816A (en) | charpentieb | |
US1867924A (en) | Fuse | |
US1094030A (en) | Electric fuse. | |
US426057A (en) | Fuse-block | |
US768065A (en) | Pyrotechnic signal-alarm and burning torch. | |
US636379A (en) | Electric cut-out. | |
US576710A (en) | Ventilated fuse-plug for electric circuits | |
US1081214A (en) | Inclosed electric fuse. | |
US888355A (en) | Fuse. | |
US961826A (en) | Electrically-protected plate and lining for vaults, safes, &c. | |
US2780695A (en) | Electric fuse | |
US1770196A (en) | Electric fuse | |
US601286A (en) | Fusible cut-out | |
US701396A (en) | Electrical protector. | |
US683639A (en) | Protective appliance. | |
US458753A (en) | Protective fuse | |
US1396352A (en) | Fuse-plug | |
US581460A (en) | Electric fuse | |
US402753A (en) | Osborn p | |
US740745A (en) | Electric cut-out. | |
US1008629A (en) | Fuse attachment for electric lights. |