EP0500995A1 - Vorrichtung zum mechanischen Vibrato für Elektrogitarren und Elektrobässen - Google Patents

Vorrichtung zum mechanischen Vibrato für Elektrogitarren und Elektrobässen Download PDF

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Publication number
EP0500995A1
EP0500995A1 EP91103084A EP91103084A EP0500995A1 EP 0500995 A1 EP0500995 A1 EP 0500995A1 EP 91103084 A EP91103084 A EP 91103084A EP 91103084 A EP91103084 A EP 91103084A EP 0500995 A1 EP0500995 A1 EP 0500995A1
Authority
EP
European Patent Office
Prior art keywords
bed plate
vibrato
nut
slider
holder
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.)
Withdrawn
Application number
EP91103084A
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English (en)
French (fr)
Inventor
Ivo Porizka
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP91103084A priority Critical patent/EP0500995A1/de
Publication of EP0500995A1 publication Critical patent/EP0500995A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
    • G10D3/14—Tuning devices, e.g. pegs, pins, friction discs or worm gears
    • G10D3/147—Devices for altering the string tension during playing
    • G10D3/153—Tremolo devices

Definitions

  • the electric guitar play requires a perfectly and constantly tuned instrument.
  • vibrator devices of various types and embodiments.
  • Most of them consist of a bed plate with string attaching mechanisms, and a block secured to said plate from under.
  • a stationary block is connected with tension springs attached to the guitar body and enabling the prestress to be varied.
  • the bed plate is attached to the upper surface of the guitar body by means of anchor screws so that it can be tilted.
  • the string attaching mechanism is made in such a way that the string is caught by its eyed end whereupon, when tuning, the slider together with the attached string is displaced by the screw.
  • a vibrator handle of electric guitar be safely fixed, during the play, in a desired position, and that it may be possible to easily change this position.
  • Some devices of prior art serving to this purpose have consisted in that to the bed plate there is secured, by means of a nut provided on the top plate surface, a box with inner thread cut through in its bottom part in form of a transverse groove, and that such a created beak is slightly bent upward.
  • the vibrato handle is provided at its attachment end with thread and screwed in the box.
  • the thread of the bent beak assumes then the function of a clamp element.
  • Disadvantages are in slow screwing, in the necessity of using a spanner for holding the entire box together with the nut while overcoming the resistance in the thread of the bent portion.
  • the present invention is to eliminate the disadvantages of prior art as hereinabove set forth and to provide an improved vibrato device wherein no elements thereof, except for a removable vibrato handle, exceed the level of any clamped and taut string on the instrument, and which comprises a bed plate together with a stationary block, string clamping and adjusting systems separate for each of the strings, and a vibrato handle.
  • the bed plate connected with the stationary block carries multimembered clamping articulated blocks mounted for swinging and reciprocation thereon.
  • Each of said clamping blocks comprises a holder, a slider, a jaw, a grip and a nut with a washer.
  • each of the holders is shaped at its bottom side to form a feather to enter the grooves and the slits.
  • the holder Via the slider mounted for swinging in a fork of the holder, the holder is adjustably coupled with the grip in the form of a prism having central stepped hole with a nut provided at one end with inner hexagon and a washer. The portion of the grip which is turned away from the holder is lowered and shaped to form a fork with an elongate radiused recess merging into its central hole.
  • the bed plate carries also a chucking nut so that it is screwed on a bush shaper to form a chuck with outer threading, the bush being screwed in the threaded hole of the bed plate provided therefor.
  • a lock nut is screwed on the bush, and the latter receives the shorter arm of the vibrato handle.
  • the mechanical vibrato device comprises also a lock consisting of a screw joint with a head having an internal hexagon and of a sleeve which both are both-sidedly flattened. The lock is situated at the side opposite the vibrato handle and opposite the clamping blocks, at the bed plate so that the non-flattened parts of the head and sleeve of the lock extend to above and under said bed plate.
  • the slider has a prism-like head having an axial radiused groove and a cylindrical shank which is provided with threading and in which there is provided an axial vertical longitudinal groove extending up to the adjacent portion of the slider head so that the groove end continuously merges into said portion.
  • the front portion of the grip facing the slider is provided with a vertical groove extending in the axis of its central passing-through opening.
  • the width of the groove in the slider shank and that of the vertical groove in the grip are the same, and the thickness of the jaws in T-form of which arms are either rounded or chamfered, does not exceed the widths of said grooves into which it is inserted, the width of the jaw body not exceeding the minor diameter of the shank threading.
  • Still other feature of the invention resides in that the outer threading of the bush receiving one end of the vibrato handle is shaped at its top portion to form a cone and that the chucking nut is provided with internal chucking webs.
  • a blind hole receiving from under upward one after the other a lower stepped ring, a bevel ring and an upper stepped ring which are arranged so that they bear on one another by their front portions.
  • a threaded hole in which a clamp nut with central nut is screwed, said nut bearing by its lower portion on the upper flat front of the upper stepped ring.
  • the holder is provided on its part turned away from the slider and grip with two vertical threads receiving thrust screws bearing on the bed plate.
  • the feather of the holder is provided with a horizontal, longitudinally and axially oriented threading with an eye bolt which bears by its head on the front of the block at the side turned away from the holder. In its front facing the head of the slider, a groove receiving said head is provided.
  • the progress obtained by the vibrato device of the invention consists above all in providing the hitherto best string attachment surface, since the jaw secured in the grip groove cares for the parallelism of its clamping surface to the clamping surface of the slider rear portion Simultaneously the thickness of the jaw and the width of the groove for string in the slider are chosen so that even at a partial flattening of the string the jaw does not bear on the slider.
  • the string is uniformly stretched by the entire clamping surface so that it is not exposed to any demaging while being clamped in the vibrato lock formed here by the slider, the jaw and the grip so that unlike well-known devices the delicate string clamping process may be disregarded.
  • the arrangement of the clamping and controlling system in the groove of the bed plate and the block which prevents the system from wobbling during the string attachment and makes it possible to attach it without being necessary to use either special devices or steadily holding it by the other hand, which all positively influences the speed, accuracy and easiness of the string attachment.
  • the preferable application of the vibrato lock consisting of a screw and sleeve with both-sidedly flattening, considerably simplifies and accelerates the global adjustment of the instrument so that, due to the immobilisation of the bed plate, a situation occurs as if the instrument be provided with a stable bridge. After adjusting and unlocking the vibrato device, the fine adjustment of the lower tension springs is already an easy affair. This advantage manifests itself positively if some string has to be quickly exchanged whereby no substantial detuning of already tuned strings occurs.
  • Another advantage of the vibrato device consists particularly in simple change of clamping force by merely tightening either the chucking nut or, according to the alternative embodiment, the clamping nut while even an eventual wear of the conical bush threading (first variant) or of bearing surfaces of the rings (second variant), including the threadings of the nuts and their bearing surfaces, does not influence the device operation. Also the removal and insertion of the vibrato handle is easy and quick, and does not depend but upon the turning of the respective nut.
  • the vibrato device of the invention is easily applicable to the existing instruments of "Stratocaster” type. Finely, a not negligible progress brought about by the device lies in the global structure thereof and in the attachment of the individual elements to the bed plate, which does not cause any fading of string sound so that a long sound reverberation (so-called “sustain”) is obtained. This is very important with instruments of this type.
  • the mechanical vibrato device comprises a bed plate 1 which forms an integral part with a stationary block 3 and on which there are mounted for swinging and reciprocation, respectively, holders 2 and grips 12 connected by means of sliders 6, jaws 19 and nuts 13 with an internal hexagon.
  • a bed plate 1 which forms an integral part with a stationary block 3 and on which there are mounted for swinging and reciprocation, respectively, holders 2 and grips 12 connected by means of sliders 6, jaws 19 and nuts 13 with an internal hexagon.
  • grooves 22 are provided, and in the block 3 slits 4 corresponding to the grooves 22.
  • the lower end of each of the holders 2 is shaped to form a longitudinally oriented feather 25 to engage in said grooves 22 and slits 4.
  • Each grip 12 is mounted for reciprocation on the top surface of said bed plate 1, and its body has the form of a prism with a central stepped hole receiving a nut 13 with the internal hexagon, washer 29, shank 11 of the slider 6 and web of the jaw 19, and with its rear portion lowered and forming a fork 15 with a longitudinal radiused recess merging up to said central hole.
  • the front portion of the grip 12 is provided with a vertical groove 27, and by means of a groove of its fork 15 it is coupled with a clamping screw 7 screwed in a threaded hole of the bed plate 1 and provided with a fine tuning nut 17.
  • the head 21 is shaped to form a prism whose front portion merges into a radiused surface provided with said radiused groove 26 sloping, from the half of the upper surface, downward, a connecting pin 10 passing through axial opening provided in the slider 6.
  • the shank 11 of the slider 6 has the form of a cylinder provided with threading and is cut-through in the form of a vertical axial groove extending up to the rear end of the head 21.
  • the head 21 is situated in a fork provided in the holder 2, the fork walls being also provided with a transverse hole for a connecting pin 10.
  • the front portion of the holder 2 there are also provided two vertical threaded holes for thrust screws 9 bearing on the top surface of the bed plate 1, and the feather of the holder 2 is provided with a horizontal elongate thread in which an eye bolt 8 is screwed.
  • the assembly comprising the holder 2, slider 6, jaw 19, grip 12, nut 13, washer 29, connecting pin 10, thrust screws 9, eye bolt 8, clamping screw 7 and fine tuning nut 17, constitutes a clamping unit system for the string 28 of which fulcrum is formed by said pin 10 while the lateral and positional orientation is cared for by the feather 25, the jaw 19, thrust screws 9, eye bolt 8 of the holder 2, clamping screw 7 and the fine tuning nut 17.
  • a blind hole 38 receiving from under upward one after the other a lower stepped ring 36, a bevel ring 37 and an upper stepped ring 36 which are arranged so that they bear on one another by their front portions.
  • a threaded hole in which a clamp nut 35 with central hole is screwed, said nut bearing by its lower portion on the upper flat front of the upper stepped ring 36.
  • a lock 30 of the vibrato device is situated in the guitar body, said lock consisting of a screw with both-sidedly flattened sleeve and head.
  • the space between the head and the sleeve of this screw forms a groove whose width is greater than the thickness of the bed plate 1, and the lock 30 of the vibrato device is situated so that in the position where the non-flattened portion is adjacent the bed plate 1, said lock embraces said portion.
  • Holes provided from under in the body of blocks 3 receive each one end of springs 32 attached by their other end in a spring holder 33 secured by screws 34 to the wall of a recess in the guitar body.
  • the bed plate 1 is at first locked by turning the non-flattened portion of the lock 30 toward said plate whereby the vibrato device is prevented from being deviated by the tension of springs 32 or the strings 28 to be attached whereupon due to the loosening of the nut by the socket spanner 23, the slider 6 is released and the jaw 19 is displaced away from the rear portion of the head 21 of the slider 6.
  • a space for the string 28 is provided between the jaw 19 and said rear portion.
  • the string 28 freed of its catching eye is then laid into said space so as to lie simultaneously in the groove 26 of the head 21 of the slider 6, and it will be stretched by re-tightening the nut 13 of the jaw 19.
  • the string 28 is attached to a device on the guitar head or scroll (not shown).
  • the other strings are attached in the same way.
  • the fundamental tuning will be effected.
  • the holders 2 are laid by their bearing surface on the top surface of the bed plate 1.
  • the fundamental vertical positioning of entire mechanical vibrato device together with all of the stretched strings 28 is effected by means of anchor screws or bolts 24.
  • the actual vertical adjustment of the individual strings 28 relative to the profile of top surface of the touch-board will then be effected by displacing the individual holders 2 by means of thrust screws 9.
  • the bed plate 1 If the bed plate 1 is not in the middle of said groove, its position will be adjusted by springs 32 until the correct one is reached. In case the mechanical vibrato device is correctly positioned and the tension of springs 32 and strings 28 is balanced, the bed plate 1 is unlocked and the octave or intonation tuning will be commenced by turning the lock by 90°. This is made for each string separately by tilting the entire vibrato device to the instrument body toward the neck by the vibrato handle 16 and, after loosening the fine tuning nut 17 to a desired extent, by displacing the entire stretching system of string 28 by means of the eye bolt 8. After octave tuning of all strings 28 has been effected, the fine tuning will be made by vertical adjustment of fine tuning nuts 17.
  • the bed plate 1 When a string 28 is to be exchanged in the already tuned instrument, the bed plate 1 will be locked again by turning the lock 30 by 90°, the string 28 is loosened by the stretching device (not shown) and be replaced. The new string 28 will be inserted again into the groove 26 of the head 21 of the slider 21, and is attached by re-tightening the nut 13, i.e. by the jaw 19. The other string end will then be secured by said stretching device, and the string will then be tuned as hereinabove referred to. After the tuning, the position of the bed plate 1 in the lock 30 is revised and, by tensioning or releasing the springs 32, respectively, the bed plate 1 will be adjusted to assume the position in the middle of the groove. In this way the original tuning of the not exchanged strings 28 remain unaffected. Now the lock 30 will be unlocked and any necessary fine tuning of the new string 28 will be made by the nut 17.
  • the instrument may automatically be detuned even by missing a single string, owing to the reduction of tension relative to the springs 32; this can be prevented by locking the bed plate 1 by the lock 30.
  • its correct position will be fixed and any possible small difference can be eliminated by fine tuning.
  • a tilted-out position of the vibrato device is desired while the normal position corresponds to the top surface of the guitar body, a vertical re-adjustment is effected by turning the lock 30 whereby the fixation of the bed plate 1 in this new position is enabled.
  • the vibrato device has to be completely locked by the lock 30 whereby the danger of damaging it, string break by relentless manipulation, or falling are prevented.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Stringed Musical Instruments (AREA)
EP91103084A 1991-03-01 1991-03-01 Vorrichtung zum mechanischen Vibrato für Elektrogitarren und Elektrobässen Withdrawn EP0500995A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91103084A EP0500995A1 (de) 1991-03-01 1991-03-01 Vorrichtung zum mechanischen Vibrato für Elektrogitarren und Elektrobässen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91103084A EP0500995A1 (de) 1991-03-01 1991-03-01 Vorrichtung zum mechanischen Vibrato für Elektrogitarren und Elektrobässen

Publications (1)

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EP0500995A1 true EP0500995A1 (de) 1992-09-02

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EP91103084A Withdrawn EP0500995A1 (de) 1991-03-01 1991-03-01 Vorrichtung zum mechanischen Vibrato für Elektrogitarren und Elektrobässen

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015000041A1 (en) * 2013-12-04 2015-01-08 Maslarov Teodor Dimitrov Tremolo device for a stringed musical instrument
CN111081461A (zh) * 2019-12-26 2020-04-28 浙江安德利变压器有限公司 一种铁芯夹件、使用该铁芯夹件的铁芯及干式变压器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116768A (en) * 1982-03-15 1983-09-28 Rose Floyd D Apparatus for restraining and fine tuning the strings of a musical instrument particularly guitars
WO1986004716A1 (en) * 1985-01-31 1986-08-14 Fender Musical Instruments Corporation Tremolo spring adjustment mechanism for electric guitars
EP0249464A2 (de) * 1986-06-11 1987-12-16 C. Leo Fender Abstimmanordnung für eine Vibratogitarre mit Vibratoarretierung
US4796505A (en) * 1986-11-26 1989-01-10 Toshitaka Takeuchi Tremolo arm adjustment mechanism in electric guitar
US4867031A (en) * 1988-05-13 1989-09-19 Fender C Leo Saddle assembly for guitar vibrato unit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116768A (en) * 1982-03-15 1983-09-28 Rose Floyd D Apparatus for restraining and fine tuning the strings of a musical instrument particularly guitars
WO1986004716A1 (en) * 1985-01-31 1986-08-14 Fender Musical Instruments Corporation Tremolo spring adjustment mechanism for electric guitars
EP0249464A2 (de) * 1986-06-11 1987-12-16 C. Leo Fender Abstimmanordnung für eine Vibratogitarre mit Vibratoarretierung
US4796505A (en) * 1986-11-26 1989-01-10 Toshitaka Takeuchi Tremolo arm adjustment mechanism in electric guitar
US4867031A (en) * 1988-05-13 1989-09-19 Fender C Leo Saddle assembly for guitar vibrato unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015000041A1 (en) * 2013-12-04 2015-01-08 Maslarov Teodor Dimitrov Tremolo device for a stringed musical instrument
US9330638B2 (en) 2013-12-04 2016-05-03 Teodor Dimitrov Maslarov Tremolo device for a stringed musical instrument
CN105659313A (zh) * 2013-12-04 2016-06-08 特奥多尔·季米特洛夫·马斯拉罗夫 弦乐器的颤音装置
CN105659313B (zh) * 2013-12-04 2019-01-29 特奥多尔·季米特洛夫·马斯拉罗夫 弦乐器的颤音装置
CN111081461A (zh) * 2019-12-26 2020-04-28 浙江安德利变压器有限公司 一种铁芯夹件、使用该铁芯夹件的铁芯及干式变压器

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