US528893A - Rheostat - Google Patents
Rheostat Download PDFInfo
- Publication number
- US528893A US528893A US528893DA US528893A US 528893 A US528893 A US 528893A US 528893D A US528893D A US 528893DA US 528893 A US528893 A US 528893A
- Authority
- US
- United States
- Prior art keywords
- band
- strip
- coil
- crimped
- folded
- 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
- 239000004020 conductor Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 6
- 206010022114 Injury Diseases 0.000 description 4
- 238000002788 crimping Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 241000239290 Araneae Species 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
Images
Classifications
-
- 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
- My invention relates to electrical resistances, and consists essentially in a block, card or device formed by crimping or folding a metallic band or strip back and forth in short folds or bends, and then coiling the folded strip into a spiralor substantially spiral form, as hereinafter more fully explained.
- Figure l is a perspective view of a metallic strip, folded preparatory to coiling;
- Fig. 2 a perspective view of such a strip partially coiled;
- Fig. 3 a plan or face View of a card or section consisting of a length of the crimped or folded strip coiled into spiral form, with proper insulation between the coils;
- Fig. 4 an edge View of the completed section or coil.
- A indicates a strip, band or ribbon of any suitable material, metal, or alloy, iron being preferred for ordinary use because of its cheapness and general suitability.
- This strip or band is crimped, bent or folded as represented in Fig. 1, the folds being quite short,- advisably not over one or two inches and ordinarily one inch or less,--though I do not mean to restrict myself to any stated dimensions.
- the band is coiled into spiral or analogous form, with the apices of the folds or bends radial to the center of the spiral or approximately so, as best indicated in Fig. 2.
- a strip B of insulating material such as asbestos, micanite or the like, which serves the double purpose of separating and insulating the coils, and of affording a proper bearing for the thin edges of the metallic strip constituting said coils.
- Figs. 3 and 4 represent the coil or block in its completed state, a suitable binding 0 of wire, properly covered, or separated from the metal by an insulating strip D, being employed to prevent uncoiling. If the coil be used within a retaining shell, spider, or casing, such binding will not be required.
- the resistance block will be used in the ordinary way, connection being made with its ends, or at one end and at an intermediate point, or two or more may be connected in series and used with any ordinary contact device by which to introduce or remove resistance as required.
- the crimping of the band A may be effected in any convenient manner, but most cheaply and expeditiously by passing it between rolls suitably ribbed or corrugated.
- a resistance device consisting of a band insulating strip B, and insulated binding C or ribbon of conducting material, crimpcd or all substantially as described and shown. folded facewise, and then coiled edgewise, In witness whereof I hereunto set my hand substantially as shown and described. in the presence of two witnesses.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
Description
A. J. SHAW.
(No Model.)
'RHEOSTAT.
Patented Nov. 6 1.894.
UNITED STATES PATENT OFFICE.
ALTON J. SI-IAV, OF MUSKEGON, MICHIGAN.
RH EOSTAT.
SPECIFICATION forming part of Letters Patent No. 528,893, dated November 6, 1894.
Application filed April 10, 1894- Serial No. 1045. (No model.)
To (ti/Z whom it may concern: Be it known that I, ALTON J. SHAW, aciti zen of the United States, residing at Muskegon, in the county of Muskegon and State of Michigan, have invented certain new and useful Improvements in Rheostats, of which the following is a specification.
My invention relates to electrical resistances, and consists essentially in a block, card or device formed by crimping or folding a metallic band or strip back and forth in short folds or bends, and then coiling the folded strip into a spiralor substantially spiral form, as hereinafter more fully explained.
In the drawings,Figure l is a perspective view of a metallic strip, folded preparatory to coiling; Fig. 2, a perspective view of such a strip partially coiled; Fig. 3, a plan or face View of a card or section consisting of a length of the crimped or folded strip coiled into spiral form, with proper insulation between the coils; and Fig. 4 an edge View of the completed section or coil.
In the construction of resistance devices, rheostats, &c., it is desirable to combine cheapness, durability, compactness and efficiency, and to do this it is necessary to employ cheap materials, capable of safely carrying heavy currents without injury. Thorough ventilation, (and consequent dissipation of the heat occasioned by impedance of the current,) is an important factor in the problem, and this I secure, together with other desirable points, by the construction illustrated in the drawings, which will now be explained.
A indicates a strip, band or ribbon of any suitable material, metal, or alloy, iron being preferred for ordinary use because of its cheapness and general suitability. This strip or band is crimped, bent or folded as represented in Fig. 1, the folds being quite short,- advisably not over one or two inches and ordinarily one inch or less,--though I do not mean to restrict myself to any stated dimensions. After being thus crimped or folded, the band is coiled into spiral or analogous form, with the apices of the folds or bends radial to the center of the spiral or approximately so, as best indicated in Fig. 2. This mode of coiling the crimped band brings the edges of the bandin one coil opposite to those of the next, and unless something be interposed to prevent, the coils will make actual contact. To prevent this I wind with the crimped band, a strip B of insulating material such as asbestos, micanite or the like, which serves the double purpose of separating and insulating the coils, and of affording a proper bearing for the thin edges of the metallic strip constituting said coils.
Figs. 3 and 4 represent the coil or block in its completed state, a suitable binding 0 of wire, properly covered, or separated from the metal by an insulating strip D, being employed to prevent uncoiling. If the coil be used within a retaining shell, spider, or casing, such binding will not be required.
The resistance block will be used in the ordinary way, connection being made with its ends, or at one end and at an intermediate point, or two or more may be connected in series and used with any ordinary contact device by which to introduce or remove resistance as required.
The crimping of the band A may be effected in any convenient manner, but most cheaply and expeditiously by passing it between rolls suitably ribbed or corrugated.
It will be seen that under this construction both faces of every portion of the band or strip are exposed to the atmosphere, and that consequently a large radiating surface is afforded. Hence any heat due to impedance of the current will be speedily dissipated, and injury of the conductor will be avoided.
The compactness of the device is manifest, and its economy is made apparent upon brief consideration of the relative lengths of conductor, coil, and insulating strip. Thus, assuming that a ribbon be used of No. 20 Birmingham wire gage, one half inch in width, and that the folds are one inch in length, and taking six inches as the mean diameter of the coils of the spiral, the diameter of the coil would be approximately eighteen inches,- the length of the insulating strip for such coil would be about nineteen inches, and the length of the conducting band or ribbon in the coil would be about seventeen feet.
If the band were wound facewise into a spiral, without being crimped, a length of insulating strip equal to the length of conductor would be required, and there would be little or no ventilation. cessive folds.
Having thus described my invention, what 3. The resistance device, consisting of i5 I claim iscrimped band A coiled edgewise upon itself,
5 1. A resistance device consisting of a band insulating strip B, and insulated binding C or ribbon of conducting material, crimpcd or all substantially as described and shown. folded facewise, and then coiled edgewise, In witness whereof I hereunto set my hand substantially as shown and described. in the presence of two witnesses.
2. The herein-described resistance block, ALTON J. SHAXV. IO consisting of a band or ribbon of conducting WVitnesses:
insulating material interposed between sucmaterial crimped or folded facewise, and CHAS. L. GRIFFIN, coiled edgewise upon itself, and a layer of J. G. EMERY, Jr.
Publications (1)
Publication Number | Publication Date |
---|---|
US528893A true US528893A (en) | 1894-11-06 |
Family
ID=2597678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US528893D Expired - Lifetime US528893A (en) | Rheostat |
Country Status (1)
Country | Link |
---|---|
US (1) | US528893A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2438272A (en) * | 1947-02-28 | 1948-03-23 | Dance Darnell Asbery | Static eliminator for radio receiving sets |
US2464147A (en) * | 1945-12-04 | 1949-03-08 | Proctor Electric Co | Heating unit |
US3041569A (en) * | 1960-04-07 | 1962-06-26 | American Radiator & Standard | Heating element |
US3074042A (en) * | 1959-11-25 | 1963-01-15 | Gen Electric | Low-inductance resistor |
US5724019A (en) * | 1996-06-27 | 1998-03-03 | Robertshaw Controls Company | Flexible potentiometer |
-
0
- US US528893D patent/US528893A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464147A (en) * | 1945-12-04 | 1949-03-08 | Proctor Electric Co | Heating unit |
US2438272A (en) * | 1947-02-28 | 1948-03-23 | Dance Darnell Asbery | Static eliminator for radio receiving sets |
US3074042A (en) * | 1959-11-25 | 1963-01-15 | Gen Electric | Low-inductance resistor |
US3041569A (en) * | 1960-04-07 | 1962-06-26 | American Radiator & Standard | Heating element |
US5724019A (en) * | 1996-06-27 | 1998-03-03 | Robertshaw Controls Company | Flexible potentiometer |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US528893A (en) | Rheostat | |
US1830084A (en) | Terminal for resistors | |
US2265295A (en) | Rectangular electric roaster | |
US356902A (en) | Elihu thomson | |
US515280A (en) | George a | |
US2945083A (en) | Electric terminal and method of making the same | |
US783546A (en) | Insulation for edgewise-wound coils. | |
US2019999A (en) | Circuit controller | |
US1898789A (en) | Condenser | |
US2879320A (en) | Insulated strip conductor having end portion folded on controlled radius | |
US1050912A (en) | Electric resistance. | |
US277248A (en) | Electroplated insulated conductor of electricity | |
US1081414A (en) | Electric heating element. | |
JP4502860B2 (en) | Wire winding binding and method for detecting damaged portion of electric wire using the same | |
JP2944875B2 (en) | Spiral coil device and its manufacturing method | |
US3315199A (en) | Electrical terminal or tap for a strip wound coil and method of making the same | |
US1552686A (en) | Electric resistance coils free from induction and capacity | |
US677862A (en) | Coil for electromagnets and insulating material therefor. | |
US1024234A (en) | Electric heating unit. | |
US1019075A (en) | Electrical resistance. | |
US859923A (en) | Electrical condenser. | |
US839257A (en) | Electrical resistance material. | |
US1068763A (en) | Electric heating device. | |
US296294A (en) | Insulated conductor | |
US825211A (en) | Resistance unit. |