ES1179183U - Pica for cello (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Cello pick, which being of the type made up of two pieces (1) and (2) that can be coupled to each other, the first of which is a hollow tube (1), with holes in three directions (3) on its surface, and cut in a diagonal bevel (4) at one end, and at a 90º angle at the other end (5), so that it can fit without leaving empty spaces with the tip piece (2). In this piece (2) a tube (6) is housed, of smaller diameter and size than the tube (1), with a cut (7) also diagonally. Continuing on the same piece (2), a protrusion (8) is presented below that acts as a stop for the entire assembly, in turn following the outer part (9) of the tip (2), which stands out for having a front hole (10), as well as a threaded hole (11) at its end, which accommodates the sharp point or pointed cylinder (12), which performs the function of nailing and supporting the model assembly and the cello on the floor. (Machine-translation by Google Translate, not legally binding)

Description

PICA FOR VIOLONCHELO

OBJECT OF THE INVENTION

This document, as expressed in the statement of this specification, refers to an accessory for cello, specifically the pick, which has been conceived and carried out in order to obtain numerous and notable advantages over other existing models of similar purposes .

It is planned for the cello to have more projection and better sound quality, also improving its timbre and texture, thus providing great comfort to the instrumentalist.

Well, the pica model is based on two pieces fitted together. The first piece is a cylindrical and hollow tube that contains a pattern of holes in three directions along its surface. The second is a piece that forms the tip, with extra front hole. This arrangement of the holes responds to a design that respects the wavelengths of the sound, allowing it to come out more easily and releasing the instrument pressure.

The spike enters the interior of the cello through a hole in the button and an applet with thread or screw that carry these instruments as standard, and that allows the adjustment and fixation of the length of the same.

BACKGROUND OF THE INVENTION

Numerous models of cello pikes are known, some of which also have a hole system along the tube. These provide variables regarding the shape and materials that can positively or negatively influence the sound of the instrument, as well as exercise more or less comfort in its use.

In this regard, we can mention models that include a cylindrical tube together with the piece of the tip to part, with the difference that both pieces are screwed for assembly. This form of assembly, by screwing the tube directly with the tip, presents some discomforts, since with the vibration of the instrument it is gradually lost and the thread tends to loosen, which leads to various friction noise of the materials in contact, which they obstruct and dirty the pure sound of the cello.

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. This organization of the air outlets also presents some drawback, and that is that

If there are holes in the back of the tube, part of the sound is wasted, since the air is not forced to come out concentrated forward and the sides, so that projection is lost.

Finally, this pattern of holes also 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 that the sound harmonics exert on the tube and the tip.

DESCRIPTION OF THE PARTS OF THE MODEL The object of the invention has 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 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, the tip is provided to consist of two parts in the same piece: the inner part in the form of a hollow tube with a bevel, which enters into the tube of the spike, and the outer part, which is outside the tube, and It is hollow as a soundboard. This outer part also has a front hole that allows the sound to be released, as well as a projection in the area where it makes contact with the tube. This projection has more diameter than the rest of the pieces and acts as a stop so that the pit itself does not enter the cello and fall into its soundboard. To complete this piece, a small pointed cylinder is added, as a sharp point, made of a harder material that can fit perfectly into the ground.

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.

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, along with sweet and velvety, so it will be, so to speak, the ideal material for the manufacture of tube of this invention.

Steel also offers good results, presenting a powerful sound, especially in the most acute cello records.

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. You can also combine two materials in the piece of the tip, such as brass for the body of the 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 interconnectable, the part 1 being formed by a tube with a series of holes 3 in its surface and one end 4, which is introduced into the cello and is cut diagonally at 45 °. The other end 5, cut at 90 °, joins the piece of the tube 1 with the tip 2.

For its part, piece 2 is formed by another smaller tube 6, which is introduced into

the large tube 1. This tube 6 also has a cut 7 diagonally at 45 °. The piece of the tip 2 in turn contains a projection 8 that acts as a stop, which exceeds the diameter of the whole of the model by a few millimeters, so that it does not enter fully into the cello.

Then, continuing with part 2, we will describe its outer part 9, which is hollow and with a front hole 10 as an air release. Inside the part 9 we will find a hole with thread 11 that allows to join the pointed cylinder or sharp point 12, which is stuck in the ground, with the rest of the piece 2.

The fastening of the pieces 1 and 2, as shown in figure 1, is carried out by snapping said pieces together, adding to ensure epoxy resin in the tube 6 of the tip 2.

On the other hand, to join the sharp point 12, with the thread hole 11, apart from screwing the pieces 11 and 12, we will also use epoxy resin to ensure the fastening.

In this way, the pieces 1, 2 and 11 and 12 are perfectly fixed and immobilized, without the possibility of detaching themselves from the object that forms the cello pick.

Claims (1)

1. PICA FOR VIOLONCHELO, which being 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) houses a tube (6), smaller in diameter and size than the tube (1), with a cut (7) also diagonally. Following in the same piece (2), a projection (8) is presented below, which acts as a stop for the entire assembly, following in turn on the outside (9) of the tip (2), which stands out by having a front hole (10), as well as a threaded hole (11) at its end, which accommodates the sharp point or pointed cylinder (12), which performs the function of nailing and supporting the model assembly and The cello on the floor.