US347766A - Haeold p - Google Patents
Haeold p Download PDFInfo
- Publication number
- US347766A US347766A US347766DA US347766A US 347766 A US347766 A US 347766A US 347766D A US347766D A US 347766DA US 347766 A US347766 A US 347766A
- Authority
- US
- United States
- Prior art keywords
- pieces
- resistance
- pile
- artificial
- wire
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 24
- 239000002184 metal Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 12
- 230000004048 modification Effects 0.000 description 4
- 238000006011 modification reaction Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 239000010454 slate Substances 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/003—Thick film resistors
Definitions
- Our invention relates to artificial electric resistances for rheostats, current-regulators, &c.
- a very cheap and efficient electric resistance may be formed out of small pieces of metal of a regular or irregular shape piled togetheras, for example, short straight pieces of wire laid one on top of another, or iron chips or shavings-as, for example, those from a latheor small pieces of iron of a spherical or other shape piled together in a suitable inclosing case or box.
- the degree of resistance may be varied by making the metal pieces smaller or larger, and also by varying the pressure upon the pile, or its area in crosssection.
- Iron is the preferable metal to use and the glaze which is usually found upon wire should be removed by heating to a bright red, or baking, or otherwise, when short pieces of wire are used.
- the resistancepile may be divided into parts by contact plates or pieces inserted at intervals, with one or the other of which the circuit-wires may be connected, according to the amount of rcsistan ce desired to be placed in the circuit.
- ⁇ Ve are of course aware that coils of wire have heretofore been used for resistance; but we find that a much less amount of wire will produce the same resistance when it is cut up into short pieces, and such pieces piled one on top of another.
- the resistance-piles should be provided with ventilating-passages in and through them.
- FIG. 1 is a front elevation of a resistancepile embodying our invention.
- Fig. 2 is a section on line 2 2 of Fig. 1.
- Fig. 3 is a detail view showing as a modification the small metal (No model.)
- Fig. l is a View showing a modification wherein iron filings are used.
- A represents abox or case, preferably of iron, furnished with slate or other insulating-lining, B.
- O O are small fine pieces of metal piled to gether, preferably short pieces of iron wire from which the glaze has been removed, con stituting the resistance.
- contact plates or pieces 1) D are or may be inserted, with which the circuit-wires E E may be connected.
- F is a screw, the end of which bears against the movable plate 13' at the top of the resist ance-pile, and by which the pressnrenpon the pile may be regulated and the resistance thereby adj nstcd.
- the resistance may also be adjusted by varying the crosssectional area of the mass or pile of resistance pieces.
- the artificial resistance consisting in a pile of short pieces of wire placed one on top of another, substantially as specified.
- the artificial electric resistance consisting in a mass or pile composed of a great number of small fine pieces of metal piled together in contact with each other, having contact plates or pieces inserted at intervals, substantially as specified.
- the artificial resistance consisting in a pile of short pieces of wire placed one on top of another, having contact plates or strips inserted at intervals, substantially as specified.
- the artificial resistance consisting in a pile of short pieces of wire placed one on top of another, having contact plates or strips inserted at intervals, in combination with case A, having lining B, of insulating material, substantially as specified.
- the artificial resistance consisting in a pile of small fine pieces of metal having contact plates or strips inserted at intervals, in combination with case A, having insulatinglining B, substantially as specified.
Description
(No Model.)
H. P. & F. H. BROWN.
ARTIFICIAL ELECTRICAL RESISTANCE.
No. 347,766. Patented Aug. 24, 1886.
II/l/IIl/[IIIIIIIIIA -6 IIIIIIIIIIIIIIIIIIIII in per: Zo 735':
Enroll P.3 Earns HerZeTZBwm Y Witnesses: 4
UNITED STATES PATENT OFFICE.
HAROLD P. BROWN AND FRANCIS HERBERT BROIVN, OF CHICAGO, ILL.
ARTIFICIAL ELECTRICAL RESISTANCE.
SPECIFICATION forming part of Letters Patent No. 347,766, dated August 2 1886.
Application filed March 6, 1886. Serial No. 19!,102.
T0 aZZ whom it may concern:
Be it known that we, HAROLD P. BROWN and FRANCIS HERBERT BROWN, citizens of the United States, residing in Chicago, in the county of Cool; and State of Illinois, have invented a new and useful Improvement in Artificial Electrical Resistances, of which the following is a specification.
Our invention relates to artificial electric resistances for rheostats, current-regulators, &c.
Vi e have discovered by experiment that a very cheap and efficient electric resistance may be formed out of small pieces of metal of a regular or irregular shape piled togetheras, for example, short straight pieces of wire laid one on top of another, or iron chips or shavings-as, for example, those from a latheor small pieces of iron of a spherical or other shape piled together in a suitable inclosing case or box. The degree of resistance may be varied by making the metal pieces smaller or larger, and also by varying the pressure upon the pile, or its area in crosssection. Iron is the preferable metal to use and the glaze which is usually found upon wire should be removed by heating to a bright red, or baking, or otherwise, when short pieces of wire are used. The resistancepile may be divided into parts by contact plates or pieces inserted at intervals, with one or the other of which the circuit-wires may be connected, according to the amount of rcsistan ce desired to be placed in the circuit.
\Ve are of course aware that coils of wire have heretofore been used for resistance; but we find that a much less amount of wire will produce the same resistance when it is cut up into short pieces, and such pieces piled one on top of another.
\VllCl'C it is desired to facilitate the escape of heat, the resistance-piles should be provided with ventilating-passages in and through them.
In the accompanying drawings, which form a part of this specification, and in which similar letters of reference indicate like parts. Figure 1 is a front elevation of a resistancepile embodying our invention. Fig. 2 is a section on line 2 2 of Fig. 1. Fig. 3 is a detail view showing as a modification the small metal (No model.)
pieces in the form of balls, and Fig. l is a View showing a modification wherein iron filings are used.
In said drawings, A represents abox or case, preferably of iron, furnished with slate or other insulating-lining, B.
O O are small fine pieces of metal piled to gether, preferably short pieces of iron wire from which the glaze has been removed, con stituting the resistance. At intervals contact plates or pieces 1) D are or may be inserted, with which the circuit-wires E E may be connected.
F is a screw, the end of which bears against the movable plate 13' at the top of the resist ance-pile, and by which the pressnrenpon the pile may be regulated and the resistance thereby adj nstcd. The resistance may also be adjusted by varying the crosssectional area of the mass or pile of resistance pieces.
XVe clain1- l. The artificial resistance, consisting in a pile of short pieces of wire placed one on top of another, substantially as specified.
2. The artificial electric resistance, consisting in a mass or pile composed of a great number of small fine pieces of metal piled together in contact with each other, having contact plates or pieces inserted at intervals, substantially as specified.
The artificial resistance, consisting in a pile of short pieces of wire placed one on top of another, having contact plates or strips inserted at intervals, substantially as specified.
4. The artificial resistance, consisting in a pile of short pieces of wire placed one on top of another, having contact plates or strips inserted at intervals, in combination with case A, having lining B, of insulating material, substantially as specified.
5. The artificial resistance, consisting in a pile of small fine pieces of metal having contact plates or strips inserted at intervals, in combination with case A, having insulatinglining B, substantially as specified.
HAROLD P. BROlVN. FRANCIS HERBERT BROIVN.
\Vi tnesses:
H. M. MUNDAY, J OHN WV. llIUNDAY.
Publications (1)
Publication Number | Publication Date |
---|---|
US347766A true US347766A (en) | 1886-08-24 |
Family
ID=2416834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US347766D Expired - Lifetime US347766A (en) | Haeold p |
Country Status (1)
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US (1) | US347766A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5120935A (en) * | 1990-10-01 | 1992-06-09 | Nenniger John E | Method and apparatus for oil well stimulation utilizing electrically heated solvents |
-
0
- US US347766D patent/US347766A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5120935A (en) * | 1990-10-01 | 1992-06-09 | Nenniger John E | Method and apparatus for oil well stimulation utilizing electrically heated solvents |
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