[0001] The invention relates to an electrical stringed musical instrument.
[0002] In electrical stringed instruments, especially guitars and bass guitars, the use
of pick-ups is well known; they are usually mounted on the body of the instrument
at a predetermined position with respect to the strings mounted on the instrument.
[0003] One of the drawbacks of such instruments is that each single model is different from
the next, having its own peculiar timbre, mostly due to the shape of the instrument
itself, but also related to the type of pick-up mounted and the type of electrical
sound processing circuit for the signal picked up by the pick up. In other words,
to obtain a sound having a particular characteristic (metallic, sweet, mellow and
so on) the player may have to change instruments.
[0004] Musicians, however, tend to have preferences for single instruments, which have been
chosen because of their suitability to hand size, stature and so on. So it happens
that some of the more well-known musicians have to commission several "made-to-measure"
instruments in order to achieve the full range of musical effects they desire.
[0005] The main aim of the present invention is to obviate the abovementioned drawbacks
and limits in the prior art, by providing an electric stringed instrument which is
constructionally simple and which can be used by a musician to obtain various types
of sound without having to change instrument or perform complex and time-consuming
operations on the processing circuits elaborating the electric signal provided by
the pick ups.
[0006] An advantage of the invention is that the musician does not have to change instrument
in order to modify timbre; so that he or she can carry on using a favourite and well-suited
instrument.
[0007] A further advantage is that various pick-ups can rapidly be tried out on a same instrument,
so that differences between pick-up response and performance can be tested accurately
in an identical context.
[0008] This aim and others besides are all attained by the device of the invention, as it
is characterized in the following claims, which comprises at least one guide, to which
a slide is coupled, said slide bearing at least one guitar pick-up; at an end of the
slide destined to strike against a body of the instrument is located a plug which
is couplable with a multicore socket fixed to the body of the instrument and electrically
connected to a jack socket.
[0009] Further characteristics and advantages of the present invention will better emerge
from the detailed description that follows, of an embodiment of the invention, illustrated
in the form of a non-limiting example in the accompanying drawings, in which:
figure 1 is a perspective partial view of the instrument of the invention;
figure 2 is a possible electrical connection setup between a pick-up and a jack socket
11.
[0010] With reference to the drawings, an electric guitar 1 provided with a body 2 has mounted
thereon a bridge 10 to support strings 3, which strings are tensioned at a predetermined
distance from the body 2. A usual-type pick-up 4, also located on the body 2 of the
guitar 1, generates electrical signals corresponding to the sounds generated by the
strings 3. Said electrical signals are sent to a jack socket 11, predisposed on the
body 2, by which they are sent on to, for example, an external amplifier.
[0011] The pick-up 4 is mounted on a slide 5 which is slidable in a straight direction on
guides 6 mounted in the body 2. The preferred embodiment illustrated in the figures
exhibits two slides, each bearing a pick-up.
[0012] The guides 6 are arranged on a parallel plane to the strings 3, and more precisely
on lateral walls of a recess 7 cut into the body 2. A multicore socket 8, connected
up, for example, to an electrical circuit such as the one shown in figure 2, is arranged
on a frontal wall of the recess 7.
[0013] A plug 9 is mounted on the slide 5, which plug 9 is predisposed to mate with the
multicore socket 8 and which plug 9 is electrically connected to the pick-up on the
slide 5.
[0014] The recess 7 is laterally defined by walls which extend at one end up to an edge
of the body 2, giving rise to an aperture into and out of which a slide 5 can be fully
inserted or removed. Thus the slide 5 can run on the guides 6 from a first, endrun
position in which the pick-up 4 is positioned between the body 2 and the strings 3
and wherein the plug 9 is coupled in the socket 8, and a second position, in which
the slide 5 is fully extracted from the guides 6. In the first position the pick-up
4 is correctly situated for playing; that is, the magnets of the pick-up 4 are situated
each below a string 3.
[0015] Preferably, but not necessarily, the slide 5 superiorly exhibits a block 12 shaped
such as to complete an original external configuration of the body 2 by filling in
the recess 7.
[0016] Between the multicore socket 8 and the jack socket 11, a plurality of sound processing
circuits 1, of known type, can be provided, each of which is electrically connected
to a predetermined connection point on the multicore socket 8. An electric commutator
13 connects on command an output of one of said sound processing circuits 14 to the
multicore socket 8. Adjustment circuits of, for example, volume, can be provided among
said sound processing circuits 14, as is normal in musical instruments of this type.
It is also possible to send a signal generated by the pick-up 4 directly to the jack
socket 11; the signal will then be adjusted by means of the amplifier controls.
[0017] Mechanical means for adjustment (of known type and not illustrated in the figures)
are also provided, which modify a distance between the guides 6 and the strings 3,
so that a best distance between said guides 6 and said strings 3 can be found; known
systems are also provided for adjusting a height of the pick-up 4 with respect to
the strings 3.
[0018] Thus a musician can change the timbre of his instrument simply by extracting the
slide 5 and inserting another slide 5 in its place, which latter slide obviously bears
a different pick-up 4. The instrument characteristics can therefore be radically changed
with an operation lasting only a few seconds.
[0019] A further rapid adjustment of the instrument characteristics can be made by simply
adjusting the commutator 13 and thus connecting the pick-up and the jack 11 through
the desired circuit 14.
[0020] The invention enables several different types of pick-up to be tested out on a single
instrument, simply by substituting the pick-ups 4.
[0021] Also noteworthy is the fact that thanks to the configuration of the guides and the
slides, the pick-ups 4 can be substituted without interfering with the strings 3.
1. An electrical stringed musical instrument, of the type comprising:
a body (2), above which strings (3) are mounted and tensioned at a predetermined distance;
at least one pick-up (4), fixed on the body (2) at a predetermined distance from the
strings (3), for generating electrical signals corresponding to sounds generated by
the strings (3), which electrical signals are sent on to a jack socket (11) provided
on the instrument;
characterized in that each of the at least one pick-up (4) comprises:
a multicore socket (8), fixed to said body (2) and electrically connected to the jack
socket (11);
guides (6), arranged on the body (2);
a slide (5) bearing the at least one pick-up (4);
a plug (9), for coupling with the multicore socket (8), which plug (9) is mounted
on the slide (5) and electrically connected to the pick-up (4);
said slide (5) being slidable on the guides (6) between a first position, wherein
the pick-up (4) is arranged between the body (2) and the strings (3) and wherein the
plug (9) is inserted in the multicore socket (8), and a second position wherein the
slide (5) is completely extracted from the guides (6).
2. A musical instrument as in claim 1, characterized in that the guides (6) are arranged
on a parallel plane to the strings (3).
3. A musical instrument as in claim 1, characterized in that it comprises a recess (7)
cut into the body (2), which recess (7) is provided with lateral walls bearing the
guides (6), an end of which lateral walls extend as far as an edge of the body (2),
another end of which lateral walls extend as far as the multicore socket (8).
4. A musical instrument as in claim 3, characterized in that it comprises a block (12),
solidly mounted on the slide (5), which restores an original configuration of the
musical instrument, which original configuration has been changed by the recess (7).
5. A musical instrument as in claim 1, characterized in that between said multicore socket
(8) and the jack socket (11) a plurality of processing circuits (14) of an electrical
signal are provided, each of which plurality of processing circuits (14) is electrically
connected to predetermined points of connection in the multicore socket (8); an electric
commutator (13) being provided for connecting on command an output of a chosen circuit
of the plurality of processing circuits (14) with the jack socket (11).
6. A musical instrument as in claim 3, characterized in that it comprises known-type
mechanical means for adjusting a distance between the guides (6) and the strings (3)
of the instrument.