US2044033A - Speaking head - Google Patents

Speaking head Download PDF

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Publication number
US2044033A
US2044033A US746865A US74686534A US2044033A US 2044033 A US2044033 A US 2044033A US 746865 A US746865 A US 746865A US 74686534 A US74686534 A US 74686534A US 2044033 A US2044033 A US 2044033A
Authority
US
United States
Prior art keywords
head
plunger
speaking
portions
cap
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
Application number
US746865A
Other languages
English (en)
Inventor
Heising Kurt Von
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STILLE INV S Ltd
STILLE INVENTIONS Ltd
Original Assignee
STILLE INV S Ltd
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.)
Filing date
Publication date
Application filed by STILLE INV S Ltd filed Critical STILLE INV S Ltd
Application granted granted Critical
Publication of US2044033A publication Critical patent/US2044033A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed

Definitions

  • This invention relates to a speaking head for telegraphones and the like' ofthe Poulsen system and oi' the kind divided into two hinged portions between which and between spring-pressed pole pieces in said portions, the wire or tape is guided.
  • the object of the invention is to obtain additional facilities for manipulating the speaking head, and the invention consists in hinging the two portions of the head to a rigid supporting base allowing them, when opened out, to be separated from the tape so as to leave the latter in a completely isolated position and so as to leave the magnet faces free for the convenient manipulation of the pole pieces, means being provided for convenient adjustment of the spring pressure on the pole pieces and for' relieving the lat ter of pressure without disturbing the spring adjustment, while the head is being opened and closed.
  • FIG. 1 o the accompanying drawing represents a side view' of a speaking head constructed according to the invention, one head portion being shown in section.
  • Fig. 2 is a side view on a smaller scaley showing the head open
  • y Fig. 3 is a plan view oi' Fig. 2.
  • the speaking head is divided into two, co-operating portions a and b each provided with a magnet coil c within which a pole piece d is arranged to slide.
  • the two head portions vnormally abut against each other, and the pole pieces bear from opposite sides and under spring pressure4v against a record carrier, preferably in the form ot a steel tape e which travels through a guideway f made li'or, it in the pole face of one or both head portions.
  • Felt pads a may be let into the.
  • the head portions are hinged at h and i'respectively to a rigidsupporting base k which is normally covered by the two head portions, as shown in Fig. 1, andwhich allows the head to be opened out as shown in Figs. 2 and 3, in order to separate it from the tape e.
  • Fig. 2 it will be seen in Fig. 2 that the -tape is left by the opened out head portions in a completely isolated position and that the pole pieces are lett perfectly tree for convenient manipulation and exchange.
  • the cap is provided with graduations and is adjusted with reterence to an index q.
  • a pin s which is secured to the cap and which normally engages in an aperture in the knob, serves as a support for retaining the plunger in retracted position, the knob and plunger being for this purpose turned through a small angle so as to throw the aperture in the knob out 'of register with the pin.
  • 'Ihe hinge h of the head portion a is made so as to enable this portion to be displaced in the direction of the hinge pin for staggering the two pole pieces in known manner in the direction oi' travel of the recording tape.
  • 'Ihe adjustment is 30 effected through the medium of a nut v which .Mworks on a screw :c within a yoke y and which is provided with micrometer reading, the screw bein'g connected to the head portion a while the yoke is connected to a bracket 'z onl the base lc 36 and pivots together with the head portion about the pin of the hinge h.
  • rA speaking head for telegraphones comprising two co-operating head portions adapted to guide a travelling recording member between them, a rigid supporting baseto which both head 45.
  • a speaking head for telegraphones com ⁇ prising two co-operating head portions adapted to guide a travelling recording member between them, a. rigid supporting base to which both head portions are hinged for application to and sep' aration from said recording member, a slidable pole piece in each head portion, a plunger abutting against said pole piece, a screw cap serving as guide for said plunger, a spring bearing against said cap and against the plunger for applying the latter to the pole piece, means for retracting the plunger from the pole piece, and means for retaining the plunger in retracted position, the screw cap being adjustable for regulating the plunger pressure.
  • a speaking head for telegraphcnes comprising two Jo-operating head portions adapted to guide a travelling recording member between them, a rigid supporting base to which both head portions are hinged for application to and separation from said recording member, a sldable pole piece in each head portion, a plunger abutting against said pole piece, a screw cap serving as guide for said plunger, a spring bearing against the cap and against the plunger for applying the latter to the pole piece, a knob secured to the outer end of the plunger, and an 1 abutment on the screw cap adapted, after rotary displacement of said knob from its normal position, to co-operate with the knob for maintaining the plunger in inoperative position, said screw cap being adjustable for regulating the pressure of the plunger on the pole piece.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Telephone Set Structure (AREA)
  • Toys (AREA)
US746865A 1933-10-09 1934-10-04 Speaking head Expired - Lifetime US2044033A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2044033X 1933-10-09

Publications (1)

Publication Number Publication Date
US2044033A true US2044033A (en) 1936-06-16

Family

ID=10896948

Family Applications (1)

Application Number Title Priority Date Filing Date
US746865A Expired - Lifetime US2044033A (en) 1933-10-09 1934-10-04 Speaking head

Country Status (4)

Country Link
US (1) US2044033A (de)
CH (1) CH176679A (de)
DE (1) DE645767C (de)
FR (1) FR781816A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514577A (en) * 1946-09-11 1950-07-11 Herman S Heller Magnetic recorder pole piece and assembly
US2561365A (en) * 1948-05-06 1951-07-24 Magnetic Equipment Inc Magnetic recording head, including a device for adjusting the gap width
US2627557A (en) * 1946-09-06 1953-02-03 Gen Mills Inc Shield and guide for magnetic recorder-reproducer heads
US3251048A (en) * 1962-02-28 1966-05-10 Minnesota Mining & Mfg Magnetic tape transport system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE891624C (de) * 1951-05-09 1953-10-01 Siemens Ag In einer Schiebefuehrung gehalterte Magnetkopfanordnung fuer Magnettongeraete

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627557A (en) * 1946-09-06 1953-02-03 Gen Mills Inc Shield and guide for magnetic recorder-reproducer heads
US2514577A (en) * 1946-09-11 1950-07-11 Herman S Heller Magnetic recorder pole piece and assembly
US2561365A (en) * 1948-05-06 1951-07-24 Magnetic Equipment Inc Magnetic recording head, including a device for adjusting the gap width
US3251048A (en) * 1962-02-28 1966-05-10 Minnesota Mining & Mfg Magnetic tape transport system

Also Published As

Publication number Publication date
CH176679A (de) 1935-04-30
DE645767C (de) 1937-06-02
FR781816A (fr) 1935-05-22

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