US1706537A - Casing for electric meters - Google Patents
Casing for electric meters Download PDFInfo
- Publication number
- US1706537A US1706537A US45439A US4543925A US1706537A US 1706537 A US1706537 A US 1706537A US 45439 A US45439 A US 45439A US 4543925 A US4543925 A US 4543925A US 1706537 A US1706537 A US 1706537A
- Authority
- US
- United States
- Prior art keywords
- casing
- electric meters
- magnetic
- magnet
- plate
- 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
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
Definitions
- the casing for electric meters for subscribers usually consists of a metallic envelope.
- Various metals such as iron, aluminium, zinc, brass, and the like, are employed for this purpose and said casings are manufactured in the most economical manner by the casting process or by stamping in a single piece.
- the casing the object of my invention allows of preserving the advantages of the protection afforded by the magnetic casings either cast or stamped in one piece, which can be made at a small cost, and also of eliminating the difficulties in regulating which result from their use.
- the wall of the casing is formed in the region near the magnet, of a non-magnetic metal such as copper, bronze, aluminium, etc., the said portion of the wall having suitable dimensions in order that the magnetic part of the casing shall no longer af feet the magnet.
- FIGs. 1 and 2 are side views illustrating somewhat diagrammatically, two embodiments of the present invention.
- Figs. 3 and 4 are detail sectional views illustrating two methods for securing a disk of nonmagnetic metal to the casing in accordance with the present invention.
- said plate being to prevent the lines of force of the magnet (Fig. 3) being completed through the walls of said casing
- the shape of the said plate may be chosen as desired; it may even have the shape of the front face of the said casing, 1. e. it may cover the whole of the front face,-'as shown in Fig. 2 at B if the magnet 1s situated at the front, or it may have any suitable disposition, which may be'favorable to the appearance of the apparatus.
- the plate may consist of a piece which may be riveted or soldered, or may be secured in place by means of a cast alloy, as illustrated in Fig. 3, or which may be secured in place by upsetting portions of the casing, as isshown in Fig. 4.
- What I claim is 1 In an electric meter of the type described having a damping magnet, a casing of mag netic material for said meter, a cover of magnetic material for said casing and a metallic non-magnetic insert carried by said cover in the portion thereof lying within the magnetic field of said damping magnet for the purpose disclosed.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Casting Devices For Molds (AREA)
Description
Filed July 22, 1925 Patented Mar. 26, 1929.
UNITED STATES PATENT OFFICE.
RENE MERCIER, OF PARIS, FRANCE, ASSIGNOR T0 COMPAGNIE CONTINENTALE POUR LA FABRICATION DES GOMPTEURS & AUTRES APPAREILS, OE PARIS, FRANCE.
CASING ron ELECTRIC METERS.
Application filed July 22, 1925, Serial N02. 415,439, and in France November 7, 1924.
The casing for electric meters for subscribers, usually consists of a metallic envelope. Various metals such as iron, aluminium, zinc, brass, and the like, are employed for this purpose and said casings are manufactured in the most economical manner by the casting process or by stamping in a single piece. In order to protect the meter against the disturbing influence of the external fields, it has been the usual practice to construct the said casings exclusively of cast iron or sheet iron. V
A very serious drawback whichis observed in'the use of such casings consists in the fact that it changes-the standardizing of the meter which is always regulated in the laboratory with the casing removed by reason of the magnetic shunting produced by the metal of the casing upon the damping magnet which is always at a shortdistance therefrom.
The casing, the object of my invention allows of preserving the advantages of the protection afforded by the magnetic casings either cast or stamped in one piece, which can be made at a small cost, and also of eliminating the difficulties in regulating which result from their use. For this purpose the wall of the casing is formed in the region near the magnet, of a non-magnetic metal such as copper, bronze, aluminium, etc., the said portion of the wall having suitable dimensions in order that the magnetic part of the casing shall no longer af feet the magnet.
In the accompanying drawings,
Figs. 1 and 2 are side views illustrating somewhat diagrammatically, two embodiments of the present invention; and
Figs. 3 and 4 are detail sectional views illustrating two methods for securing a disk of nonmagnetic metal to the casing in accordance with the present invention.
inserted a plate A of non-magnetic material,
which plate may be of a circular shape; the
purpose of said plate being to prevent the lines of force of the magnet (Fig. 3) being completed through the walls of said casing,
'which would occur if the casing were wholly of magnetic material. v
The shape of the said plate may be chosen as desired; it may even have the shape of the front face of the said casing, 1. e. it may cover the whole of the front face,-'as shown in Fig. 2 at B if the magnet 1s situated at the front, or it may have any suitable disposition, which may be'favorable to the appearance of the apparatus.
The manner in which the plate is secured to the casing is optional; in particular, the plate may consist of a piece which may be riveted or soldered, or may be secured in place by means of a cast alloy, as illustrated in Fig. 3, or which may be secured in place by upsetting portions of the casing, as isshown in Fig. 4.
What I claim is 1 In an electric meter of the type described having a damping magnet, a casing of mag netic material for said meter, a cover of magnetic material for said casing and a metallic non-magnetic insert carried by said cover in the portion thereof lying within the magnetic field of said damping magnet for the purpose disclosed.
In testimony whereof I have signed this specification.
MERCIER,
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1706537X | 1924-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1706537A true US1706537A (en) | 1929-03-26 |
Family
ID=9680357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US45439A Expired - Lifetime US1706537A (en) | 1924-11-07 | 1925-07-22 | Casing for electric meters |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1706537A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2575715A (en) * | 1946-06-13 | 1951-11-20 | Edward L Keller | Lightning protector for watthour meters |
| US2710377A (en) * | 1955-06-07 | pfeffer |
-
1925
- 1925-07-22 US US45439A patent/US1706537A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2710377A (en) * | 1955-06-07 | pfeffer | ||
| US2575715A (en) * | 1946-06-13 | 1951-11-20 | Edward L Keller | Lightning protector for watthour meters |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US1706537A (en) | Casing for electric meters | |
| US3331043A (en) | Permanent holding magnet | |
| US2041480A (en) | Carrier for magnetic recording | |
| US3827298A (en) | Electromagnetic flow meter | |
| DE692963C (en) | microphone | |
| US2380560A (en) | Permanent magnet | |
| US2421285A (en) | Induction type electricity meter | |
| US1805459A (en) | Magnetic device | |
| US1370914A (en) | Alternating-current magnet | |
| GB1064109A (en) | Corrosion resistant hard alloys | |
| US1664672A (en) | Induction electricity meter | |
| US1686909A (en) | Oscillation-retarding device | |
| GB334493A (en) | Improvements in and relating to apparatus for producing sound | |
| GB490010A (en) | Improvements in or relating to permanent magnet assemblies for sound-transforming apparatus | |
| GB1031131A (en) | Improvements in or relating to electromagnetic relays | |
| GB227424A (en) | Improvements relating to metallic compound strips | |
| SU441342A1 (en) | Iron based alloy | |
| SU198672A1 (en) | Iron-based hard magnetic alloy | |
| DE593090C (en) | Payment plate with coin acceptor | |
| GB350049A (en) | Improvements relating to magnetic separators | |
| GB518825A (en) | Improvements in or relating to magnetic structures | |
| GB380811A (en) | Improvements in or relating to electromagnetic devices, particularly electro-dynamicacoustic devices | |
| GUDKEVICH et al. | THE INFLUENCE OF MANGANESE ON THE PROPERTIES LEADED BRASS CASTINGS | |
| JPH0429024B2 (en) | ||
| GB241166A (en) | Alternating pole magnets for electric small size machines |