US2721920A - weide - Google Patents

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Publication number
US2721920A
US2721920A US28546052A US2721920A US 2721920 A US2721920 A US 2721920A US 28546052 A US28546052 A US 28546052A US 2721920 A US2721920 A US 2721920A
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US
United States
Prior art keywords
resistor
insulator
support
bend
bends
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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
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English (en)
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.)
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Publication date
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Priority to US28546052 priority Critical patent/US2721920A/en
Priority to GB1068153A priority patent/GB720899A/en
Priority to FR1080753D priority patent/FR1080753A/fr
Priority to DEG11648A priority patent/DE1054147B/de
Application granted granted Critical
Publication of US2721920A publication Critical patent/US2721920A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
    • H01C3/10—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element having zig-zag or sinusoidal configuration

Definitions

  • the present invention relates generally to electrical resistors and particularly to electrical resistors used in connection with diesel-electric locomotives equipped with dynamic braking.
  • Dynamic braking is an electrical means which has been devised for braking diesel-electric locomotives and consists of connecting resistances across the traction motor armatures and exciting the elds of the traction motors. These traction motors are turned by the coasting locomotive so that their function under the above conditions is to operate as a generator whereby the energy of the coasting train is converted into heat by the resistances connected across the traction motors. Because of the large amount of energy to be converted these resistances create a tremendous amount of heat which must be dissipated into the atmosphere. The problem of getting rid of this heat has merited considerable attention in the dieselelectric locomotive field.
  • the present invention has been developed to accomplish the above objectives by providing mounting brackets between the bends of the resistor band and the insulator support which allow adequate cooling of the bends and also locate the bends away from the insulator support.
  • Figure l shows a resistor grid assembly including the insulator supports, the serpentine resistor band and an end View of the improved means for holding the bends of the resistor and connecting them to the insulator supports.
  • Figure 2 shows a view taken along line 2-2 of Figure l, and discloses a partial sectional view of one of the insulator supports with the new mounting brackets residing in the recesses in the insulator support.
  • Figure 3 is a View taken along line 3-3 of Figure l, and discloses the conguration of slots for fastening the improvement in the insulator support.
  • Figure 4 is a perspective View of the new mounting bracket.
  • Figure 5 shows a modification of the resistor grid assembly shown n Figure l.
  • Figure 6 is a section taken along line 6--6 of Figure 5 and shows the modified means for attaching the mounting bracket to the insulator support.
  • Figure 7 is a perspective View of the modification.
  • a resistor grid assembly having parallel insulator supports 2. These insulator supports may be made of any strong insulation material, which is capable of withstanding a certain amount of heat. Between the parallel insulator supports a serpentine band 4 is placed, whose bends 6 are removed from the mounting surfaces 7 of the insulator supports. The outer surface of each of these bends is cradled by a mounting bracket 8 which is fastened to an insulator support 2 by a at extension 14 adapted to snugly fit in slots 16 provided in the insulator support. The mounting bracket 8 constitutes the improved portion of the resistor grid assembly. The details of the mounting bracket are more particularly shown in Figures 2 and 4.
  • Each of these mounting brackets which should be constructed from some heat resistant metal, such as stainless steel or chrome nickel steel consists of a at plate, which may be stamped out of flat blanks and shaped so that alternate fingers 10 extend divergently to form a cradling support for one of the bends 6 of the serpentine band 4.
  • Two retaining fingers 12 are provided at each end of the bracket to prevent the band from moving transversely with respect to the mounting bracket.
  • the bracket is mounted in the insulator supports by means of the flat extension 14, which extends into the slots 16 provided in the insulator support.
  • These slots have mating concave and convex surfaces 18 and 20 which are spaced so as to tightly grip the at extension 14 and slightly distort it.
  • FIG. 5 a modification of the mounting bracket is shown.
  • These modied mounting brackets 22 are fastened to the insulator supports 2 by means of twisted elongations 24. These elongations are wound by a suitable tool. While being held wound they are inserted in holes of the insulator support, after which the elongations 24 are released and their subsequent unwinding causes them to tightly grip the surfaces of the holes 26 and securely hold the mounting brackets 22 to the insulator supports.
  • any air which is directed around the resistor band will contact the bends of the band as freely as its other portions. This, of course, will mean that the band will be uniformly cooled, thereby preventing the development of hot spots, and increased resistance at the bends of the resistor band.
  • a member having a plurality of alternately diverging ngers forming a supporting socket around said bend and provided with means for fastening the member to said insulator support so that said bend is supported remote from said insulator support, whereby said bend as well as the other portions of said resistor may be uniformly exposed to air or other cooling media, thereby eliminating the build up of heat and resistance at said bends relative to the other p'ortions of said resistor.
  • a Y:member having-a plurality of diverging--tingcrs cradling -said bend
  • said member being provided-withlmeans ⁇ for-fastening themember Vto said-insulator support so that said bend is cradled in a location removed from said insulator support.
  • a member having a plurality of diverging fingers cradling said bend, and means for fastening the member and said insulator support together so that said bend is cradled in a location removed from said linsulator support, said means including a prolongation of said member adapted to be inserted in a slot in said-insulator support, said slot having mated concave and convex surfaces spaced to frictionally engage each side of said prolongation and retain it therein.
  • said means including a resilient twistable prolongation insertable in a hole in said insulator support when resiliently twisted by a twisting force, and friction surfaces in said hole frictionally engageable with said prolongations when released from said twisting force.
  • a resistor grid including an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insulator support, an insul
  • An electrical resistor grid assembly comprising oppositely disposed insulators, an electrical resistor interposed between said insulators, said resistor having -a plurality 'of bends formed 'thereon withV convex surfaces facing said insulators, resistor supports secured to saidinsulators and interposed between said insulators and said convex surfaces, and socket means formed on said supports remote from said insulators, said socket means being formed to receive said convex surfaces and support said resistor remote from said insulators.
  • Supportingmeans fora resistor having a'convex surfacek formed'thereon comprising an insulator spaced from saidA convex surface, a resistor support secured to said insulator and interposed between said insulator and saidconvex'surface, and socket means on said resistor 'support'remote Vfrom saidinsulator forming a cradling support for saidk convex surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Resistors (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
US28546052 1952-05-01 1952-05-01 weide Expired - Lifetime US2721920A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US28546052 US2721920A (en) 1952-05-01 1952-05-01 weide
GB1068153A GB720899A (enExample) 1952-05-01 1953-04-20
FR1080753D FR1080753A (fr) 1952-05-01 1953-04-30 Grille de résistance perfectionnée pour installations de traction électrique
DEG11648A DE1054147B (de) 1952-05-01 1953-04-30 Luftgekuehlter Widerstand, insbesondere Bremswiderstand fuer elektrisch angetriebeneFahrzeuge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28546052 US2721920A (en) 1952-05-01 1952-05-01 weide

Publications (1)

Publication Number Publication Date
US2721920A true US2721920A (en) 1955-10-25

Family

ID=31946554

Family Applications (1)

Application Number Title Priority Date Filing Date
US28546052 Expired - Lifetime US2721920A (en) 1952-05-01 1952-05-01 weide

Country Status (4)

Country Link
US (1) US2721920A (enExample)
DE (1) DE1054147B (enExample)
FR (1) FR1080753A (enExample)
GB (1) GB720899A (enExample)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928062A (en) * 1959-05-13 1960-03-08 Bois Robert E Du Resistance mounting structure
US2984806A (en) * 1959-05-13 1961-05-16 Bois Robert E Du Resistance mounting structure
US3212045A (en) * 1962-12-24 1965-10-12 Lionel E Weyenberg Grid type resistor
US3985946A (en) * 1975-02-18 1976-10-12 Sola Basic Industries, Inc. Removable heating element for high temperature furnaces
US4588976A (en) * 1984-11-19 1986-05-13 Microelettrica Scientifica S.P.S. Resistors obtained from sheet material
US4651125A (en) * 1985-05-23 1987-03-17 Dynamic Corporation Resistor grid assembly with rib turbulence generators
US4654627A (en) * 1985-05-23 1987-03-31 Dynamic Corporation Resistor grid assembly
US5045831A (en) * 1990-01-16 1991-09-03 Mosebach Manufacturing Company Vertical flight resistor grid
US5049851A (en) * 1990-01-16 1991-09-17 Mosebach Manufacturing Company Embossed and lanced resistor structure
US5686880A (en) * 1995-11-21 1997-11-11 Mosebach Manufacturing Company Continuous weave resistor grid
EP1902944B1 (de) 2006-09-20 2016-04-13 Schniewindt GmbH & Co. KG Schiffsantrieb
US11330676B2 (en) * 2016-03-02 2022-05-10 Watlow Electric Manufacturing Company Bare heating elements for heating fluid flows

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1640617B1 (de) * 1966-05-10 1971-10-07 Theodor Kiepe Elektrotechn Fab Hochbelastbarer maeanderfoermig// gefakteter bandwiderstand vorzugswiese fuer fremdbelueftung
DE3429390A1 (de) * 1984-08-09 1986-02-20 Siemens AG, 1000 Berlin und 8000 München Isolierkoerper mit zentralem durchlass fuer einen tragstab

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB620598A (en) * 1944-06-23 1949-03-28 Heurtey & Cie Improvements in metallic devices for suspending electric resistors in furnaces
US2490139A (en) * 1946-04-05 1949-12-06 Lindemann A J & Hoverson Co Electric heating unit assemblage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2277912A (en) * 1938-10-29 1942-03-31 Westinghouse Electric & Mfg Co Resistor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB620598A (en) * 1944-06-23 1949-03-28 Heurtey & Cie Improvements in metallic devices for suspending electric resistors in furnaces
US2490139A (en) * 1946-04-05 1949-12-06 Lindemann A J & Hoverson Co Electric heating unit assemblage

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928062A (en) * 1959-05-13 1960-03-08 Bois Robert E Du Resistance mounting structure
US2984806A (en) * 1959-05-13 1961-05-16 Bois Robert E Du Resistance mounting structure
US3212045A (en) * 1962-12-24 1965-10-12 Lionel E Weyenberg Grid type resistor
US3985946A (en) * 1975-02-18 1976-10-12 Sola Basic Industries, Inc. Removable heating element for high temperature furnaces
US4588976A (en) * 1984-11-19 1986-05-13 Microelettrica Scientifica S.P.S. Resistors obtained from sheet material
US4651125A (en) * 1985-05-23 1987-03-17 Dynamic Corporation Resistor grid assembly with rib turbulence generators
US4654627A (en) * 1985-05-23 1987-03-31 Dynamic Corporation Resistor grid assembly
US5045831A (en) * 1990-01-16 1991-09-03 Mosebach Manufacturing Company Vertical flight resistor grid
US5049851A (en) * 1990-01-16 1991-09-17 Mosebach Manufacturing Company Embossed and lanced resistor structure
US5686880A (en) * 1995-11-21 1997-11-11 Mosebach Manufacturing Company Continuous weave resistor grid
EP1902944B1 (de) 2006-09-20 2016-04-13 Schniewindt GmbH & Co. KG Schiffsantrieb
US11330676B2 (en) * 2016-03-02 2022-05-10 Watlow Electric Manufacturing Company Bare heating elements for heating fluid flows

Also Published As

Publication number Publication date
DE1054147B (de) 1959-04-02
GB720899A (enExample) 1954-12-29
FR1080753A (fr) 1954-12-13

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