US2175325A - Magnetoelectric pick-up device for stringed musical instruments - Google Patents

Magnetoelectric pick-up device for stringed musical instruments Download PDF

Info

Publication number
US2175325A
US2175325A US173758A US17375837A US2175325A US 2175325 A US2175325 A US 2175325A US 173758 A US173758 A US 173758A US 17375837 A US17375837 A US 17375837A US 2175325 A US2175325 A US 2175325A
Authority
US
United States
Prior art keywords
strings
pick
core
instrument
stringed musical
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
US173758A
Inventor
Herbert S Sunshine
Original Assignee
Epiphone Inc
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 Epiphone Inc filed Critical Epiphone Inc
Priority to US173758A priority Critical patent/US2175325A/en
Application granted granted Critical
Publication of US2175325A publication Critical patent/US2175325A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10HELECTROPHONIC MUSICAL INSTRUMENTS
    • G10H3/00Instruments in which the tones are generated by electromechanical means
    • G10H3/12Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
    • G10H3/14Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
    • G10H3/18Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means using a string, e.g. electric guitar
    • G10H3/181Details of pick-up assemblies

Description

Patented 10, 1939 HMQSIIIHIIOI mum rick-or navics me more men,

New York. 8.1., aslisnor tionelli'ewl'erk M W 1., 1m, Sclall'io. 173,158

2. Chill- ((3. u-rie) The present invention relates to stringed musical instruments such as the guitar. banio. manparticularly to a plifled and transformed into sounds inginpitchandqualitytothesoundsproduoed ill by the vibrations of the string The-principal nhiect of the t inven istoprovideinastringfl musica 1;, an improved type of tric rick-up unit which will faithfully-and accurately reprol duce the haracterist tones of the instrument. Another object of the invention is to provide in a stringed musical instrument, a pick-up unit which is adjustable for each string of the instrument. A further object of the invention is to 9 provide in a stringed musieal'instrument havg5 therebetween, to compensate for the ordinary as those skilled in the art to which the present invention relates.

with the above and other objects in view. the

presentinvention consists of the novel features a of construction and arrangement of parts herein- 49 after set forth and illustrated in the'accompanying drawing wherein there is shown the preferred embodiment of my invention.

In the accompanying drawing which forms an integral part of this specification.

Fig. 1 is, a' top plan view of the body portion of a stringed musical instrument showing theembodiment of my invention together with an a'mpifying circuit associated therewith;

a instrument taken on the line 2-: or mg. a; and Fig. 3 is an enlarged fragmentary sectional view of the instrument taken on the line H of Fig. 1.

Referring now reference ch is preferably constructed of non-resonant matea rial such as metal or hard wood of substantial thickness, for the present invention contemplates the reproduction of the tones produced solely by the vibrations of the strings without any resonant effects which may be produced by the body 1 of the instrument. Extending from the body IQ,

in the conventional manner, is the neck of the instrument I I which may be 'attached to the body or may be constructed integral therewith. The upper side of the neck [I forms a fingerboard which is provided with spaced frets l2. Strings I 3, which are preferably made of magnetic material and which are, in the conventional practice, of unequal diameters, are tensioned over the body and neck of the instrument in parallel so arrangement, and lie in substantially a common plane. 'lhe strings II pass over 'a bridge ll which is secured to the upper side of the body It and is situated toward the outer end thereof. and over a similar bridge (not shown) on the go fingerboard, situated near the outer end of the neck H. The strings I! are secured at one end to a tail-piece Ii and at the other end they are engaged by keys or pegs (not shown) which are strings are in this manner ada to be inanually plucked or otherwise mani ated by the player to produce the d vibrations.

The pick-u unit which. designated in general by numer i ll, comprises a permanent magas net I! of U-shape or horse-shoe design. Mounted over one of the poles of the magnet I1 is an angular plate II which is constructed of magnetic material having a lesser degree of hardness than the magnet I'I to make it adaptable for so tapping in order to receive the threaded coremembers which will be referred to hereinafter.

The magnet l1 and the anguar pole-plate II are together attached to an elongated supporting bar or bracket II by means of suitable studs or 6 bolts 2.. The pick-up unit is mounted within the interior of the body ll by means of suitable studs or bolts 2i which project upwardly from the ends of the supporting bar or bracket is and extend through openings in the upper side of the 50 body. Nuts 22 are threaded over the outer ends of the bolts ii for securing the unit It to the upper side of the body.

The pick-up unit includes a plurality of coremembers v 23 of magnetic material which are lsvldedwithan opening whereby to permit from the upper sideof the threaded into the pole-plate i8 and project upwardly, the upper ends being spaced directly bdow the strings H as illustrated in Figs. 2 and 3 of the drawing. The core-members it are threaded into the pole-plate ii? to permit of their adjustment relative to the strings in order to obtain the proper spacing therebetween, and are preierably provided with screw heads-24 so that they may be readily adjusted with a screw-driver. The pick-up unit also includes a coil 25 of suitable wire which is preferably wound on a spool 26 formed of suitable insulating material. The spool 26 is adapted to he supported on the pole plate it and surrounds the core-members 23, in such manner that the outer ends of the coremembers project slightly above the outer side oi the spool. The coil 25 is electrically connected to a suitable amplifier and loude'speaker unit it by means of conductors 2d connecting the coil 2E6 to a jack 29 provided in the body, which is adapted to receive conductors extending from the amplifying unit 2?. A variable resistance volume control 30 and a tone control 3i may be provided in the instrument and interposed between the coil and amplifying unit, including respective control knobs 32 and 33 which project them conveniently accessible i'or manipulation by the player. 3-: r i.

The underside or bottom of the body iii is pro= insertion of the pick-up unit it for mounting within the body. This opening is normally covered by a closure plate 35 which may be attached to the body in any suitahle'inanner. The upper side of the body I0 is also'provided with an opening 3's" positioned underneath the strings i3 and extending transversely thereof. The opening 35 per-= mits the upper portion of the pick-up unit iii to extend therethrough.

. In the operation of the instrument, the strings iii being adjacent the mamiet Ill, are magnetized thereby. when set in vibration by the player, the magnetizedi strings induce a pulsating cur rent hrthe-coil .25;which-is amplified and trans-= formed by the amplifier and loud-speaker unit 22 into tones c'orrespondingto thoseproducedhy.

the vibrations oi.the strings; To increase the induction within'th'e coil, the coil-is'generally provided with a core and the electromotive force which is i'nduced in the coil by the .vibrations'of the strings varies withxthe. spacing between the strings and the'core; 'Theistrings'of the instru -I ment being conventionally of difierent diameters and'lying in a common plane would ordinarily provide air gaps between the strings and core' which would vary with the diameters of'the strings; To compensate for .this diflerence in spacing, the core of my present invention con' sists of a plurality of core-members 23-which are threaded into the pole-plate i8 of the magnet ll each core-member havingits notation of his choice with instrument to makeouter end facing 52,1?5,825 p one or the strings oi the instrument In this manner the core-members 23 are rendered adjustable for spacing relative to the strings to provide for the required air gap between each string and its respective core-member. The screw heads 24 on each of the core-members enables them to be readily raised or lowered with a screwdriver. The adjustability of the core-members also permits any desired variation in the air gap etween each member to either increase or decrease the pickup effect. The instrument may thus be voiced to produce desired tone-effects. It will thus be ob served that by means of the present invention the player may readily obtain the proper balance in the pick of the strings and the musical tuning or a minimum of effort.

Having described and illustrated the preferred embodiment oi my invention, I desire to be un derstood that I do not wish to limit mystelf to the specific form of my invention herein set forth, for it will be apparent to those skilled in the art that variations may be made in the details of con struction which will nevertheless fall within the scope of my invention asdefined in the appended claims.

Having thus described and illustrated my invention, what I claim as new and desire to secure by Letters Patent i. A pick-up unit for use in a stringed musical instrument having a plurality oi vibratory strings, comprising a permanent magnet having the end portion oi one of its pole-porti0ns disposed transversely of the strings, a plate mounted on said pole portion of the .magnet, said pole plate having a plurality of spaced threaded holes therein, a adjustably member having a face adjacent one of the strings and being individually adjustable ior spacing relative thereto, and an induction coil supported by 'said pole-plate and surrounding said core-memhers.

' 2. A pick-up unit for use in a stringed musical comprising a permanent magnet generally U- shaped in cross section, a plate mounted on a pole-portion of the magnet, a pole plate having a plurality of spaced, threaded holes therein, a plurality of threaded core members adjustably positioned in said holes, an induction coil supported by the pole plate and surrounding the several core members, and means for supporting the magnet, plate, core members andcoil as a unit beneath the general plane occupied by. the strings of the stringed instrument with the poles of the magnet'directedupwardiy towards and transversely of'the strings, and I members being respectively disposed adjacent to and in general alignment with the strings,

HERBERT S. SUNSHINE.

string and its corresponding coreplurality of threaded core-members positioned in said holes, each core with the several core

US173758A 1937-11-10 1937-11-10 Magnetoelectric pick-up device for stringed musical instruments Expired - Lifetime US2175325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US173758A US2175325A (en) 1937-11-10 1937-11-10 Magnetoelectric pick-up device for stringed musical instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US173758A US2175325A (en) 1937-11-10 1937-11-10 Magnetoelectric pick-up device for stringed musical instruments

Publications (1)

Publication Number Publication Date
US2175325A true US2175325A (en) 1939-10-10

Family

ID=22633357

Family Applications (1)

Application Number Title Priority Date Filing Date
US173758A Expired - Lifetime US2175325A (en) 1937-11-10 1937-11-10 Magnetoelectric pick-up device for stringed musical instruments

Country Status (1)

Country Link
US (1) US2175325A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455046A (en) * 1946-03-20 1948-11-30 Rowe Ind Guitar magnetic microphone
US2557754A (en) * 1949-07-12 1951-06-19 Robert Miekley Magnetic pickup unit for guitars
US2764052A (en) * 1951-04-21 1956-09-25 Bantar Inc Electrical pick-up for musical instruments
US2920522A (en) * 1956-01-25 1960-01-12 Armond Harry De Musical instrument
US2964985A (en) * 1956-12-12 1960-12-20 Fred Gretsch Mfg Co Sound pick up device for stringed instruments
US2984140A (en) * 1958-05-14 1961-05-16 Barron George Electrical amplification to woodwind musical instruments
US3983777A (en) * 1975-02-28 1976-10-05 William Bartolini Single face, high asymmetry variable reluctance pickup for steel string musical instruments
US5336845A (en) * 1993-01-04 1994-08-09 Actodyne General, Inc. Pick-up assembly for a stringed musical instrument
US5401900A (en) * 1993-01-14 1995-03-28 Actodyne General, Inc. Mounting assembly for an acoustic pick-up
US5418327A (en) * 1993-01-04 1995-05-23 Actodyne General, Inc. Mounting assembly
US5438157A (en) * 1993-01-14 1995-08-01 Actodyne General, Inc. Acoustic pick-up assembly for a stringed musical instrument
US5464948A (en) * 1994-04-22 1995-11-07 Actodyne General, Inc. Sensor assembly for a stringed musical instrument
US5641932A (en) * 1995-01-19 1997-06-24 Actodyne General, Inc. Sensor assembly for stringed musical instruments
US7514626B1 (en) 2007-12-14 2009-04-07 John Jerome Snyder Method and apparatus for electrostatic pickup for stringed musical instruments
US20150027300A1 (en) * 2013-07-25 2015-01-29 RTT Music, Inc. Pickup assembly for an electrical stringed musical instrument
US9773488B2 (en) 2013-07-25 2017-09-26 Rick Wolf Pickup assembly for an electrical stringed musical instrument
US10002599B1 (en) 2016-12-16 2018-06-19 Rick Wolf Pickup assembly for an electrical stringed musical instrument

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455046A (en) * 1946-03-20 1948-11-30 Rowe Ind Guitar magnetic microphone
US2557754A (en) * 1949-07-12 1951-06-19 Robert Miekley Magnetic pickup unit for guitars
US2764052A (en) * 1951-04-21 1956-09-25 Bantar Inc Electrical pick-up for musical instruments
US2920522A (en) * 1956-01-25 1960-01-12 Armond Harry De Musical instrument
US2964985A (en) * 1956-12-12 1960-12-20 Fred Gretsch Mfg Co Sound pick up device for stringed instruments
US2984140A (en) * 1958-05-14 1961-05-16 Barron George Electrical amplification to woodwind musical instruments
US3983777A (en) * 1975-02-28 1976-10-05 William Bartolini Single face, high asymmetry variable reluctance pickup for steel string musical instruments
US5418327A (en) * 1993-01-04 1995-05-23 Actodyne General, Inc. Mounting assembly
US5336845A (en) * 1993-01-04 1994-08-09 Actodyne General, Inc. Pick-up assembly for a stringed musical instrument
US5430246A (en) * 1993-01-04 1995-07-04 Actodyne General, Inc. Dual coil pick-up assembly for a springed musical instrument
US5401900A (en) * 1993-01-14 1995-03-28 Actodyne General, Inc. Mounting assembly for an acoustic pick-up
US5438157A (en) * 1993-01-14 1995-08-01 Actodyne General, Inc. Acoustic pick-up assembly for a stringed musical instrument
US5464948A (en) * 1994-04-22 1995-11-07 Actodyne General, Inc. Sensor assembly for a stringed musical instrument
US5684263A (en) * 1994-04-22 1997-11-04 Actodyne General, Inc. Electromagnetic sensor assembly for musical instruments having a magnetic lining
US5641932A (en) * 1995-01-19 1997-06-24 Actodyne General, Inc. Sensor assembly for stringed musical instruments
US7514626B1 (en) 2007-12-14 2009-04-07 John Jerome Snyder Method and apparatus for electrostatic pickup for stringed musical instruments
US20150027300A1 (en) * 2013-07-25 2015-01-29 RTT Music, Inc. Pickup assembly for an electrical stringed musical instrument
US9147387B2 (en) * 2013-07-25 2015-09-29 RTT Music, Inc. Pickup assembly for an electrical stringed musical instrument
US9384721B2 (en) 2013-07-25 2016-07-05 RTT Music, Inc. Pickup assembly for an electrical stringed musical instrument
US9773488B2 (en) 2013-07-25 2017-09-26 Rick Wolf Pickup assembly for an electrical stringed musical instrument
US10002599B1 (en) 2016-12-16 2018-06-19 Rick Wolf Pickup assembly for an electrical stringed musical instrument

Similar Documents

Publication Publication Date Title
US3509264A (en) Electric drum or other percussion instrument
US3553339A (en) Drum-like musical instruments with electrical pickups and circuitry
US4245540A (en) Sound sustaining device for musical instruments
JP3233659B2 (en) Electric stringed instrument with a string vibration sustained apparatus
US4524667A (en) Electromagnetic pickup for a stringed musical instrument having ferromagnetic strings and method
US4941388A (en) String vibration sustaining device
US5614688A (en) Transducer system for acoustic instruments
US2964985A (en) Sound pick up device for stringed instruments
US4433603A (en) Component musical instrument
US3483303A (en) Elongated pickup for metal stringed musical instruments having ferromagnetic shielding
US4491051A (en) String instrument pickup system
US4132143A (en) Fretted musical instrument with detachable fingerboard for providing multiple tonal scales
US4314495A (en) Piezoelectric saddle for musical instruments and method of making same
US3916751A (en) Electrical pickup for a stringed musical instrument
US3571483A (en) Variable reluctance guitar pickup system
US7166793B2 (en) Compact hum-canceling musical instrument pickup with improved tonal response
US4860625A (en) Bimorphic piezoelectric pickup device for stringed musical instruments
US4283982A (en) Magnetic pickup for electric guitars
US3066567A (en) Magnetic pick-up for steel string instruments
US7189916B2 (en) Noise sensing bobbin-coil assembly for amplified stringed musical instrument pickups
US2581963A (en) Reed for electrical music instruments
WO1999039330A1 (en) Interchangeable pickup, electric stringed instrument and system for an electric stringed musical instrument
US5399802A (en) Electromagnetic pickup for stringed musical instruments
US3962946A (en) Magnetic induction stringed instrument pickup
DE69831681T2 (en) Electromagnetic converter with high inductance for string instruments