US1014741A - Inclosed-fuse indicator. - Google Patents

Inclosed-fuse indicator. Download PDF

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Publication number
US1014741A
US1014741A US50673909A US1909506739A US1014741A US 1014741 A US1014741 A US 1014741A US 50673909 A US50673909 A US 50673909A US 1909506739 A US1909506739 A US 1909506739A US 1014741 A US1014741 A US 1014741A
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United States
Prior art keywords
fuse
indicator
inclosed
fibrous material
fuse indicator
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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
Application number
US50673909A
Inventor
Lawrence E Barringer
Gilbert Wright
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to US50673909A priority Critical patent/US1014741A/en
Application granted granted Critical
Publication of US1014741A publication Critical patent/US1014741A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse

Definitions

  • the present invention relates to thermal cut-outs, and more especially to the indicating means for inclosed fuses whereby the condition of the main element'of the fuse is'made visually apparent on the outer surface of the casing.
  • the object of our invention is to provide an indicator of this character which will positively perform its function and produce a clearer and more distinct indication. than devices of this character heretofore in use.
  • Figure 1 shows in partside elevation and part section an ordinary inclosed fuse with our indicator attached thereto;
  • Fig. 2 is a magnified section of the indicator and adjacent portion of the fuse casing;
  • Fig. 3 is a plan view of theindicator before operation; and
  • Fig. 4 is the same after operation.
  • the fuse shown in the drawing consists of a casing having a central tube 1 of fiber with its ends incl'osed by metallic caps 2 through which extend the contact blades 3, to the inner ends of which the main fuse element 4 is connected.
  • An auxiliary fuse ele ment 5 extendsalong the inner surface of the casing connecting the end contacts 3'in' multiple with,..the main element 4, and the middle portionof the auxiliary element 5 is threaded through small apertures .6 in the wall of the fiber tube 1 and across a recess or chamber 7 formed in the outer surface aperture 10 through which the indicator 8 is normally seen, as shown in Fig. 3.
  • the indicator consists of fibrous material, such as rice paper, which has been treated thereof, we apply a flexible non-hygroscopic coating 12, such as collodion, to the treated fibrous material.
  • Thiscoat-ing 12 maybe applied either by dipping or spraying or pouring over the fibrous material a solution of collodion.
  • the object of providing the recess or chamber 7 in the fiber tube beneaththe auxiliary element- 5 is to afford a supply of air to the inner surface of the indicator as well as to the outer surface and at the same time prevent conduction of heat from the external portion of the auxiliary element.
  • a fuse indicator comprising fibrous material coated with a readily combustible and non-hygroscopic material.
  • a combustible indicator comprising sheet of fibrous material coated with collodion.
  • a combustible indicator comprising a sheet of fibrous material chemically treated and coated with collodion.
  • a combustible indicator comprising sheet of fibrous material trea ted in. oxidiz ing" salt and then coated with a readily comwith said auxiliary fuse and extending over 10 bustible and non-hygroscopic material. said air chamber.
  • a combustible indicator comprising a In Witness whereof, We have hereunto set sheet of fibrous material treated in oxidizing our hands this 7th day of July, 1909. salt and then coated with collodion. LAWRENCE E. BARRINGER.

Description

L. E. BARRINGER & G. WRIGHT.
I mcLosEp FUSE mmcuon.
Patented Jan. 16, 1912.
I Inventors: LawrenceEBaT'r'm Witnesses:
. g V Gilbertwri 111, 1% w w b8 Mm 1 I I t ,5.
UNITED STATES PATEN T LAWRENCE E. BARRINGER AND GILBERT WRIGHT. OF SCHENECTADY, NEW YORK, ASSIGNOBS T0 GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.
INCLOSED-FUSE inmcaron.
Specification of-Letters Patent. A
Patented Jan. 'ifigittii.
Application filed July 9, 1909. Serial No. 506,739.
To all 7.0710721 it may concern:
Be it known that we, LAWRENCE E. Baa RINGEK and GILBERT \VRIGHT, citizens of the United States, residing at Schenectady, county of Schenectady, State of New York, have inventedv certain new and useful Improvements in Inclosed-Fuse Indicators, of which the following is a specification.
The present invention relates to thermal cut-outs, and more especially to the indicating means for inclosed fuses whereby the condition of the main element'of the fuse is'made visually apparent on the outer surface of the casing.
The object of our invention-is to provide an indicator of this character which will positively perform its function and produce a clearer and more distinct indication. than devices of this character heretofore in use.
In the accompanying drawing, Figure 1 shows in partside elevation and part section an ordinary inclosed fuse with our indicator attached thereto; Fig. 2 is a magnified section of the indicator and adjacent portion of the fuse casing; Fig. 3 is a plan view of theindicator before operation; and Fig. 4 is the same after operation.
The fuse shown in the drawing consists of a casing having a central tube 1 of fiber with its ends incl'osed by metallic caps 2 through which extend the contact blades 3, to the inner ends of which the main fuse element 4 is connected. An auxiliary fuse ele ment 5 extendsalong the inner surface of the casing connecting the end contacts 3'in' multiple with,..the main element 4, and the middle portionof the auxiliary element 5 is threaded through small apertures .6 in the wall of the fiber tube 1 and across a recess or chamber 7 formed in the outer surface aperture 10 through which the indicator 8 is normally seen, as shown in Fig. 3.
The indicator consists of fibrous material, such as rice paper, which has been treated thereof, we apply a flexible non-hygroscopic coating 12, such as collodion, to the treated fibrous material. Thiscoat-ing 12 maybe applied either by dipping or spraying or pouring over the fibrous material a solution of collodion.
p In order to render visually apparent whether or not the coating material has been properly applied to all parts of the fibrous material we discolor the coating material by means of a die soluble therein such as malachite green.
p The object of providing the recess or chamber 7 in the fiber tube beneaththe auxiliary element- 5 is to afford a supply of air to the inner surface of the indicator as well as to the outer surface and at the same time prevent conduction of heat from the external portion of the auxiliary element.
We do not desire to restrict ourselves to the particular constituents or arrangement of parts herein described and shown,,since.
it is apparent that they may be changed. without departing from our invention.
Whatwe claim as new and desire to secureby Letters Patent of the United States, is, I i
1. A fuse indicator comprising fibrous material coated with a readily combustible and non-hygroscopic material.
, .2. A combustible indicator comprising sheet of fibrous material coated with collodion.
3. A combustible indicatorcomprising a sheet of fibrous material chemically treated and coated with collodion.
4. A combustible indicator comprising sheet of fibrous material trea ted in. oxidiz ing" salt and then coated with a readily comwith said auxiliary fuse and extending over 10 bustible and non-hygroscopic material. said air chamber.
5, A combustible indicator comprising a In Witness whereof, We have hereunto set sheet of fibrous material treated in oxidizing our hands this 7th day of July, 1909. salt and then coated with collodion. LAWRENCE E. BARRINGER.
6. All inclosed fuse-having an air cham- GILBERT WRIGHT. ber formed in the outer Wall, an auxiliary v VVitnesse's: fuse member crossing said air chamber, and BENJAMIN B. HULL,
a combustible indicator disposed in contact HELEN ORFORD.
US50673909A 1909-07-09 1909-07-09 Inclosed-fuse indicator. Expired - Lifetime US1014741A (en)

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US50673909A US1014741A (en) 1909-07-09 1909-07-09 Inclosed-fuse indicator.

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US50673909A US1014741A (en) 1909-07-09 1909-07-09 Inclosed-fuse indicator.

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US1014741A true US1014741A (en) 1912-01-16

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041427A (en) * 1960-04-14 1962-06-26 Nuclear Corp Of America Blown fuse indicator
US6114941A (en) * 1997-12-08 2000-09-05 Alliedsignal Inc. Thermal switch with activation indicator
US6373370B1 (en) * 1999-09-24 2002-04-16 Cooper Technologies Sputtered metal film fuse state indicator
US6456189B1 (en) * 2000-11-28 2002-09-24 Ferraz Shawmut Inc. Electrical fuse with indicator
US20030011462A1 (en) * 1998-07-31 2003-01-16 Castonguay Roland J. Fuse indicator label
US6566996B1 (en) * 1999-09-24 2003-05-20 Cooper Technologies Fuse state indicator
US20040000983A1 (en) * 2002-06-26 2004-01-01 John Kennedy Multiple conductor indicator
US6946947B1 (en) * 2000-08-14 2005-09-20 Sturgill Edward G Plug-in fuse
US20050280497A1 (en) * 2004-06-18 2005-12-22 Ackerman John M Fuse with metallic state indicator
US20060049911A1 (en) * 2004-09-08 2006-03-09 Darr Matthew R Fuse state indicator
US20070018775A1 (en) * 2005-07-20 2007-01-25 Littelfuse, Inc. Diagnostic fuse indicator including visual status identifier

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041427A (en) * 1960-04-14 1962-06-26 Nuclear Corp Of America Blown fuse indicator
US6480091B1 (en) * 1997-12-08 2002-11-12 Honeywell International, Inc. Thermal switch with activation indicator
US6114941A (en) * 1997-12-08 2000-09-05 Alliedsignal Inc. Thermal switch with activation indicator
US6809627B2 (en) 1998-07-31 2004-10-26 FLEXcon, Inc. Fuse indicator label
US20030011462A1 (en) * 1998-07-31 2003-01-16 Castonguay Roland J. Fuse indicator label
US6566996B1 (en) * 1999-09-24 2003-05-20 Cooper Technologies Fuse state indicator
US6373370B1 (en) * 1999-09-24 2002-04-16 Cooper Technologies Sputtered metal film fuse state indicator
US6946947B1 (en) * 2000-08-14 2005-09-20 Sturgill Edward G Plug-in fuse
US6456189B1 (en) * 2000-11-28 2002-09-24 Ferraz Shawmut Inc. Electrical fuse with indicator
US7405646B2 (en) * 2002-06-26 2008-07-29 Littelfuse, Inc Multiple conductor indicator
US20040000983A1 (en) * 2002-06-26 2004-01-01 John Kennedy Multiple conductor indicator
US7592893B2 (en) * 2002-06-26 2009-09-22 Littelfuse, Inc. Multiple conductor indicator
US20050280497A1 (en) * 2004-06-18 2005-12-22 Ackerman John M Fuse with metallic state indicator
US7369030B2 (en) 2004-09-08 2008-05-06 Cooper Technologies Company Fuse state indicator
US20060049911A1 (en) * 2004-09-08 2006-03-09 Darr Matthew R Fuse state indicator
US20070018775A1 (en) * 2005-07-20 2007-01-25 Littelfuse, Inc. Diagnostic fuse indicator including visual status identifier
US7636028B2 (en) 2005-07-20 2009-12-22 Littelfuse, Inc. Diagnostic fuse indicator including visual status identifier

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