US873078A - Electromagnet for telegraphone purposes. - Google Patents
Electromagnet for telegraphone purposes. Download PDFInfo
- Publication number
- US873078A US873078A US37145207A US1907371452A US873078A US 873078 A US873078 A US 873078A US 37145207 A US37145207 A US 37145207A US 1907371452 A US1907371452 A US 1907371452A US 873078 A US873078 A US 873078A
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- US
- United States
- Prior art keywords
- telegraphone
- purposes
- electromagnet
- wire
- magnet
- 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
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
Definitions
- TELEGRAPHONE COMPANY A. CORPORATION OF THE DISTRICT OF ELECTBOMAGNET FOR TELEGBAPHONE PURPCSES.
- This invention is an improvement in telegraphones, and relates's ecificallyto the-location and position of t e poles of the electro-magnet with respect to the direction of e.ts for Brassone of which t e following is a speci- 4 movement of the steel body inwhich the record is made and from which'it is repro-' symbolized, whereby the magnetic impress ons tion made in the body will be as strong at the higher speeds as at the medium speeds of a magnetic body'of given area or size.
- Figure 1 is an explanatory diagram of the relative posio the. magnetic polesontwo steel bodies of difierent size or area;
- Fig, 2 shows the working Iposition of the magnet in accordance wit our invention, and
- Fig, '3 is an illustrative plan.
- f 1' is an explanatory diagram of the relative posio the. magnetic polesontwo steel bodies of difierent size or area;
- Fig, 2 shows the working Iposition of the magnet in accordance wit our invention, and
- Fig, '3 is an illustrative plan.
- f 1' I
- the form of the steel. body illustrated is that of awirej Fig. 'lshows two wires of exactly the same material but of different diameter.
- the magnet-is referably bipolar, the two pole pieces thereo bein .adjustedto the wire at op osite points, so t at a line drawn between t em is cplerrp'endic 1lar to the length of the wire or its ection-of traverse, as, for
- maximum 0 inclination is that in which the joining line of the two magnet'poles coinoles applied thereto in a
Description
No. 873,078. PATENTED DEC. 10, 1907. P. 0. PEDBRSEN & V. POULSEN.
ELEOTROMAGNET FOR TELEGRAPHONE PURPOSES,
APPLIOATIION FILED APR.4, 19oz. RENEWED MAY z, 190?.
hL z neJJeJ; In 0022 571) am WM UNITED STATES PATENT OFFICE.
PEDER OLOF PEDERSEN AND VALDEMAR POULSEN, OF COPENHAGEN, DENMARK, ASSIGN ORS TO AMERICAN COLUMBIA.
TELEGRAPHONE COMPANY, A. CORPORATION OF THE DISTRICT OF ELECTBOMAGNET FOR TELEGBAPHONE PURPCSES.
'gade 2, Copenhagen, Denmark, have in- .vented certain new and useful, Improvements in Electroma Purposes, fication.
This invention is an improvement in telegraphones, and relates's ecificallyto the-location and position of t e poles of the electro-magnet with respect to the direction of e.ts for Telegraphone of which t e following is a speci- 4 movement of the steel body inwhich the record is made and from which'it is repro-' duced, whereby the magnetic impress ons tion made in the body will be as strong at the higher speeds as at the medium speeds of a magnetic body'of given area or size.
In the accompanying'drawing: Figure 1 is an explanatory diagram of the relative posio the. magnetic polesontwo steel bodies of difierent size or area; Fig, 2 shows the working Iposition of the magnet in accordance wit our invention, and Fig, '3 is an illustrative plan. f 1'. I
The form of the steel. body illustrated is that of awirej Fig. 'lshows two wires of exactly the same material but of different diameter. In the original Poulsen telegr aphone, the magnet-is referably bipolar, the two pole pieces thereo bein .adjustedto the wire at op osite points, so t at a line drawn between t em is cplerrp'endic 1lar to the length of the wire or its ection-of traverse, as, for
instance, shown at N58 on the larger wire a and at N, S on the small wire a. With the.
-magnet poles located in this manner on both bot wires and with both wires running at the same speed,it' be: seen that the distance between an' two sizccee' im ulses in a lo tudm direction will Specifioationof Letters Patent.
- nesses.
' et esamein w1res, whereas the distance between Patented Dec. 10, 1907.
101.345; Renewed Kay 21 1907 Serial No. 371L452.
the north and south poles of a single impulse in the large wire, is greater than 1t is in the small wire and that the ratio between these two distances become eater as the size of the wire is lessened. en this ratio, which increases with the speed, becomes very great, the demagnetizing force in the direction of the breadth of the We is very considerable and -the high speed therefore is no longer advanta eous. To avoid this we have located the 0 es of the magnet with respect to the steel ody so that a line passing through them will be oblique to the direction of movement, 1
as indicated by the lines NS and SN on thesmall wire of Fig. 1.
south poles of a given impulse without increasing the distance between the north and This arrangement; increases the distance between the north an'f south poles' of succeeding impulses. The, angle selected for the poles may vary considerably and should be made to correspond with the re uirements of the service. The
cides with the direction of motion, as shown in Fig. 3. The practical arrangement 'ofth magnet is shown in Fig.2, wherein it will be seen that the poles are in diflerent transverseline oblique to t e direction of motion of said body. I In testimony whereofwe have hereunto;
set our hands in the, presence .of two wit-z [PEDER OLOF PEDERSEN. VALDEMARPOULSEN Witnesses:.-
- Jess 1 HERMAN CHRIs'rE san',
'J;O.-JAooBsEN.-
maximum 0 inclination is that in which the joining line of the two magnet'poles coinoles applied thereto in a
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37145207A US873078A (en) | 1907-05-02 | 1907-05-02 | Electromagnet for telegraphone purposes. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37145207A US873078A (en) | 1907-05-02 | 1907-05-02 | Electromagnet for telegraphone purposes. |
Publications (1)
Publication Number | Publication Date |
---|---|
US873078A true US873078A (en) | 1907-12-10 |
Family
ID=2941525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US37145207A Expired - Lifetime US873078A (en) | 1907-05-02 | 1907-05-02 | Electromagnet for telegraphone purposes. |
Country Status (1)
Country | Link |
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US (1) | US873078A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2488717A (en) * | 1945-11-19 | 1949-11-22 | Chicago Coin Machine Co | Magnetizable wire recording system and method |
US2496047A (en) * | 1947-06-18 | 1950-01-31 | Rca Corp | Art of recording and reproducing two-sided magnetic records |
US2712572A (en) * | 1947-03-27 | 1955-07-05 | Int Electronics Co | Superimposed plural recording |
-
1907
- 1907-05-02 US US37145207A patent/US873078A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2488717A (en) * | 1945-11-19 | 1949-11-22 | Chicago Coin Machine Co | Magnetizable wire recording system and method |
US2712572A (en) * | 1947-03-27 | 1955-07-05 | Int Electronics Co | Superimposed plural recording |
US2496047A (en) * | 1947-06-18 | 1950-01-31 | Rca Corp | Art of recording and reproducing two-sided magnetic records |
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