ES1193111U - Pica for cello (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Pica for cello, which being a model of the type consisting of two pieces (1) and (2) coupled together, the first of which is a hollow tube (1), with holes in three directions (3) on its surface, and cut in diagonal bevel (4) at one end, and at an angle of 90º at the other end (5), so that it can be coupled without leaving empty spaces with the piece of the tip (2). This piece (2) consists of another link (6), of truncated cone shape and with a hole in its surface (7), with a hollow inside (8) of the size of the tube (1), and with a stop in its inner end (9). Following in the same piece (2), after the hollow (8) and the internal stop (9) there is a transverse hole with thread (10) that joins the linking piece (6) with the sharp tip (11), forming between the two (6) and (11) what would be the set of the piece (2), which performs the function of nailing and supporting the whole of the model and the cello on the floor. (Machine-translation by Google Translate, not legally binding)

Description

PICA FOR VIOLONCHELO OBJECT OF THE INVENTION

This document presents, as expressed in the statement of this descriptive report 5, an object called cello pick, an accessory that has been designed to improve the quality and sound projection, as well as to facilitate the handling of this instrument. The design presented here offers numerous advantages over other existing models of similar purposes. Specifically, here is an improvement to a previous design, already registered as a Utility Model by the SPTO, with number 10 201700101 as of 06/01/2017, on behalf of the author of this same report.

This model is designed so that the cello improves its sound quality and projection, thus raising its timbre and leveling its texture, so that it offers greater comfort to the cellist.

The composition of this pica consists of two pieces coupled together. The first piece 15 is a cylindrical and hollow tube that contains a pattern of holes in three directions along its surface. The second, which is where the change has developed with respect to the previous model, is a separate piece that makes up the tip, with an extra front hole.

The arrangement of the holes along the tube responds to a design that respects the 20 wavelengths of the sound, allowing it to come out more easily and releasing pressure to the instrument.

BACKGROUND OF THE INVENTION

Numerous models of cello pikes are known, some of which also have a hole system along the tube. As mentioned in the previous section, a change is proposed in this report with respect to the 201700101 Utility Model, granted on 06/01/2107 by the SPTO. Both models, the previous one and the present one, are in charge of the same author.

This change consists in the modification of the piece of the tip, which will have a smaller design that will facilitate its mechanization and will allow a coupling to the tube on the outside 30 instead of on the inside as proposed in the previous model. This is a very important advantage since, with almost the entire tube remaining hollow, the sound flows more easily, significantly improving its sound projection.

On the other hand, we can mention models that comprise a cylindrical tube together with the piece of the tip to part, with the difference that both pieces are screwed for its

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assembly, which leads to a gradual loss of adjustment, thus producing various noise caused by friction of the materials.

Likewise, in these models there is a pattern of holes along the tube, at 90 ° to each other, and on four sides: front, right side, left side and rear. With holes in the back of the tube, part of the sound is wasted, so projection is lost. In addition, this pattern of holes has an asymmetric placement of the holes that does not respect the natural resonance of the tube, so the pica does not finish freeing itself from the load exerted by the harmonics.

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DESCRIPTION OF THE MODEL PARTS

The object of the Invention presents a new structure based on which it is achieved that the pica has a greater projection and amplitude of sound, further improving the quality of the cello's timbre. For this, the model is based on the classic hollow tube, with the peculiarity that on its surface there is a unique hole pattern. These holes are 3mm in diameter each, organized on three sides of the tube (front, left side, right side), which has an approximate length of 60cm and 10mm in diameter. The lower end of the tube, which fits the tip piece, is cut at a 90 ° angle; while the upper end, which is inside the cello, is cut at an angle of 45 °, which is important as it has a better projection and acoustic amplitude.

In addition, it is provided that the tip consists of two parts in the same piece: the part that serves as a coupling between the tube and the sharp tip, with a conical shape and a hole that crosses the piece on one side to the inside of the tube; and the sharp point, which allows to hold the cello on the ground, with a thread at its opposite end to join it to the coupling.

In order to complete the description that is going to be carried out below and in order to help a better understanding of the characteristics of the invention, the present descriptive report of a set of drawings is attached based on whose figures innovations and advantages will be more easily understood of the object of the invention.

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BRIEF DESCRIPTION OF THE DRAWINGS

• Figure 1

It shows a plan view of the front face of the total pica assembly, formed by the tube (1) and the tip (2).

• Figure 2

It shows three different views of the same tube part. The first is a plan view of the left profile of the tube, the second also presents a plan view of the front face, and the third plan view of the right profile.

• Figure 3

It shows two different views of the tip piece. The first is a plan view of the front face, and the second shows a longitudinal section of the piece along with a sharp tip detail.

MATERIALS

For the pica to get the most out of the instrument, it is necessary to use top quality materials that offer the highest acoustic and mechanical performance. The materials that best meet these needs are those that have less weight and greater rigidity and hardness, such as carbon fiber or titanium. Carbon fiber has proven to be a great ally of the wood of the instrument, since it favors obtaining a powerful sound, at the same time as sweet and velvety, so it will be, so to speak, the ideal material for the manufacture of tube of this invention.

Steel and brass also offer good results, presenting a powerful sound, especially in the sharpest records of the cello.

On the other hand, many other materials could be used, such as wood that has more hardness or aluminum, although the most optimal results would not be achieved.

For the tip piece, it is necessary to use materials that offer greater resonance, such as brass or stainless steel. This piece can be manufactured from a single material, provided that it shows a certain hardness so that the sharp vertex that sticks into the ground does not deform, such as tempered steel. Two materials can also be combined in the tip piece, such as brass for the link piece and tungsten for the sharp tip. This combination shows great results in sound, so it will be ideal for the manufacture of this invention.

DESCRIPTION OF A PREFERRED EMBODIMENT

In view of the aforementioned figures, it can be seen how the object of the invention is constituted by two pieces 1 and 2 that can be coupled together, the piece 1 being formed by a tube with a series of holes 3 on its surface and an end 4 which is introduced into the 5 cello and is cut diagonally at 45 °. At the other end 5, cut at 90 °, the piece of the tube 1 is joined with the tip 2.

For its part, the piece 2 is formed by a connection piece with a conical shape 6, which has a hole in its surface 7 that flows into the interior of the tube 1. The inside of the link piece 6 has a recess 8 of the tube width size 1, to 10 coupling mode for parts 1 and 2, which in addition to perfectly fit under pressure, epoxy resin will be applied for complete fastening. Following the hole 8 and at the inner end of the link piece 6 we will find a stop 9 so that the tube 1 does not move and fits perfectly. Also at this same end there is a threaded hole 10 that crosses the piece 6, which will serve to link the sharp tip with thread 11. To join the affiliated tip 11 with the threaded hole 10, apart from the thread method , we will use epoxy resin again to ensure the fastening.

Claims (1)

1 PICA FOR VIOLONCHELO, which being a model of the type consisting of two pieces (1) and (2) interconnected, the first of which is a hollow tube (1), with holes in three directions (3 ) on its surface, and cut into a diagonal bevel (4) at one end, and at a 90 ° angle at the other end (5), so that it can be coupled without leaving empty spaces with the tip piece (2) . This piece (2) consists of another link (6), with a conical shape and with a hole in its surface (7), with a hole inside (8) the size of the tube (1), and with a stop in its inner end (9). Following the same piece (2), following the hole (8) and the inner stop (9) there is a transverse hole with thread (10) that joins the link piece (6) with the sharp point (11) , forming between the two (6) and (11) what would be the whole of the piece (2), which performs the function of nailing and supporting the whole model and the cello on the ground.