Abstract:
[Problem] To provide a marching drum which ensures forwards and downwards visibility and ensures the field of view during marching. [Solution] [Effect] By eliminating all or some members of the body of the drum, or by adopting transparent members, this marching drum which enables forwards and downwards visibility ensures the performer&#39;s field of view during marching.

Description:
FIELD OF THE INVENTION 
       [0001]    This invention, ensuring visibility of a performer for marching drum, relates to the drum which makes it easy to march. 
       BACKGROUND OF THE INVENTION 
       [0002]    Marching drums, in terms of musical constitution, require their sizes to range from 18″ to 40″. These drums, without distinction of gender, are hung from the front of the performer&#39;s body as shown in  FIG. 1 , and they are used for performance whilst marching. 
       SUMMARY OF THE INVENTION 
     Problem to be solved by the invention 
       [0003]    When the performer- 0  marches, the visibility of the performer- 0  is subject to a blind spot obstructed by the drum in area  1  as shown in  FIG. 1 . Consequently, because the performer- 0  cannot view his legs and confirm the direction of movement, the act of marching in performance became very dangerous. Or, in some cases, an attendant is also needed to monitor movement. 
       Means for solving the problem 
       [0004]    1. This invention added the below-mentioned improvements to the drum so as to solve the problems mentioned above. Holes  5 ,  6 , and  7  as shown in  FIG. 12 , that were made on a part of the body of drum  100 , enables forwards and downwards visibility. 
         [0005]    2. Reduction of acoustic performance of drum is prevented, even when adding transparent members as  12  in  FIG. 14  on places as  11  in  FIG. 13  where holes are and even if by making these holes. 
         [0006]    3. Transparent members, such as  8 ,  9 , and  10  in  FIG. 7  and  FIG. 8 , as members forming a part of the body of drum  300  in  FIG. 15 , forwards and downwards visibility is ensured. 
         [0007]    4. Transparent member  20  in  FIG. 18  mounted along the circumference of the midsection of the body  2  of drum  500  in  FIG. 17 , creates the structure by which forwards and downwards visibility  1  can be ensured. 
         [0008]    5. Supporting members for attaching the drum heads (skins)  18  and  19  on both sides of drum  600  of  FIG. 19  with bracket (lugs)  22  to fix the drum head (skin) as the hitting surface of drum. A portion  21  with no solid member is formed at the midsection of the drum body  2 . The portion  21  is configured such that forwards and downwards visibility  1  can be ensured. If the parts attaching the drum heads (skins)  18  and  19  are made from transparent members, optimum visibility can be ensured. 
       Effects of the Invention 
       [0009]    According to this invention, there are the following effects. 
         [0010]    1. It is safe for the performer to march while performing, since the performer can look forwards and downwards. 
         [0011]    2. The attendant whilst moving becomes unnecessary. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0012]      FIG. 1  is a side view, in which the performer- 0  performs while hanging drum  100  from the front. 
           [0013]      FIG. 2  is a rear view, in which the performer- 0  performs while hanging drum  100  from the front. 
           [0014]      FIG. 3  is a side view, to indicate the line of sight of the performer- 0   
           [0015]      FIG. 4  is a rear view, to indicate the line of sight of the performer- 0   
           [0016]      FIG. 5  shows the side of the performer- 0  for drum  200  made with a circular opening on the drum for passage of the line of sight 
           [0017]      FIG. 6  shows the opposite side of the performer- 0  for drum  200  made with a circular opening on the drum for passage of the line of sight 
           [0018]      FIG. 7  shows the side of the performer- 0  for drum  300  replaced with a transparent member for a part of the drum body 
           [0019]      FIG. 8  shows the opposite side of the performer- 0  for drum  300  replaced with a transparent member for a part of the drum body 
           [0020]      FIG. 9  is a drum  400  utilizing a transparent member as the drum body material 
           [0021]      FIG. 10  is a drum  500  utilizing a transparent member as the midsection of the drum body material 
           [0022]      FIG. 11  is a drum  600 , with a clearance provided at the midsection of the drum body, but utilized without any members on the midsection of the drum body 
           [0023]      FIG. 12  indicates a position where a circular opening is provided on drum  200   
           [0024]      FIG. 13  shows a circular member to close the opening provided on drum  200   
           [0025]      FIG. 14  shows a square member to close the opening provided on drum  200   
           [0026]      FIG. 15  is a drum  300 , with a transparent member adopted for a part of the drum body 
           [0027]      FIG. 16  shows a transparent square member, constituting a part of the body of drum  300   
           [0028]      FIG. 17  shows a drum, in which a transparent member is utilized at the midsection of the drum body 
           [0029]      FIG. 18  is a transparent member for the midsection of the body of drum  600   
           [0030]      FIG. 19  shows a drum, with a clearance provided at the midsection of the drum body 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0031]    This invention is explained in detail with figures of actual examples below. 
       Example 1 of Performance of the Invention 
       [0032]      FIG. 1  shows a performer- 0  which hangs a regular drum  100  from the front. Such embodiment, when the performer- 0  performs and marches along, creats a blind spot for the performer- 0  as  1  in  FIG. 1  because the body  2  of the drum  100  confronts the front of the performer- 0 &#39;s face as shown in  FIG. 2 . For this reason, when the performer- 0  generally marches, they generally have to march primarily by predicting forwards and downwards visibility based only upon the surroundings, making it extremely difficult for the performer- 0  to perform, also creating a potentially dangerous situation. 
         [0033]    In addition, in a case of the performer- 0 &#39;s carrying drum  100  before or after the performance, the attendant is generally needed. This invention is purposed to remove the necessity of the attendant due to movement, in order to eliminate this blind spot, to ensure visibility of the performer and for the performer- 0  to march safely as it performs. 
         [0034]    Three (3) following methods are considered to ensure visibility. 
         [0035]    1. Adopting transparent members as material of the drum body like drum  400  in  FIG. 9 . 
         [0036]    2. Forming holes  5 ,  6  and  7  at certain locations on a part of the body  2  of the drum, where visibility of the performer- 0  is interrupted, like drum  200  in  FIG. 6 , or to put transparent members  11  and  12  on the openings of the drum. 
         [0037]    3. Adopting transparent members  13  and  20  on a part of the body  2  of the drum, where visibility of the performer- 0  is interrupted, like drum  300  in  FIG. 7  and drum  500  in  FIG. 10 . 
         [0038]    4. Forming a structure with a clearance  21  adopted like drum  600  in  FIG. 19 , without the use of any members along the circumference of the midsection of the body  2 , where visibility of the performer- 0  is interrupted, like drum  600  in  FIG. 19 . 
         [0039]    As for the method- 1 , provided that members similar to acrylic materials like drum  400  in  FIG. 9  are utilized, the problems can be solved. However, the size of the drum as mentioned previously generally ranges from 18″ till 40″. As the size of drum  100  increases, there is also a problem that drum  100  becomes too heavy to be carried, without distinction of gender, even if visibility is ensured. This is due to the fact that acrylic material is generally very heavy as compared with wood. 
         [0040]    As for the method- 2 , by forming opening  5  on the side of the performer- 0  and an opening  7  on the opposite side of the performer- 0  in the body of drum  200 , as shown in  FIG. 3 , the front visibility of the performer- 0  as  3  in  FIG. 3  can be ensured. 
         [0000]    In the same way as above, by forming an opening  6  on the body  2  of the drum, the downwards visibility ( 4 ) can be also ensured. 
         [0041]    An acoustic problem is caused by this kind of processing. In the case of a regular drum  100  in  FIG. 1 , when the performer- 0  beats the drum head (skin)  14  as the hitting surface of drum with beater  16 , air inside drum  100  unable to escape is forced towards to the opposite side of the drum head (skin)  15 , and the drum head (skin)  14  as the hitting surface of drum is forced out because the forced drum head (skin)  15  of the drum causes to recover with its restoring force. This action of repletion enables the powerful sound of the drum to be emitted, and gradually to be attenuated. 
         [0042]    The drum in this invention is equipped with holes  5 ,  6 , and  7  on the body of drum  200  in  FIG. 3 . With reference to playing the drum as in performance, the desired purpose of this invention can be fully accomplished. However, the volume of drum sound is reduced and its tone color gets worse too because inside air escapes through these three holes on drum  200 . Closing the openings of holes  5 ,  6 , and  7  with transparent members  11  or  12 , prevents the deterioration in the tone color of the drum. Furthermore, it goes without saying that the shape of the transparent member as mentioned above is not limited to a circle or square, but any shape can be utilized if it&#39;s ensures the visibility. 
         [0043]    As for the method- 3 , forwards visibility of the performer- 0  can be ensured by making use of square transparent sections  10  and  8  on the body  2  of drum  300  as shown in  FIG. 15 . In the same way as above, downwards visibility can be also ensured by making use of a square transparent member  9  on the body  2  of the drum. 
         [0000]    In order to produce drum  300 , by arranging a transparent component  13  on each of the openings  8 ,  9  and  10 , the body  2  of the drum is produced. In order to ensure the strength and to maintain the round shape of the drum a reinforcing material  17  as shown in  FIG. 15  and the like, can be used. Further, it goes without saying that the position of the opening is not limited to the openings like as  8 ,  9  and  10 , but any position of the opening is possible if it ensures the required visibility. 
         [0044]    As for the method- 4 , a transparent member  20  is sandwiched to fit in the midsection of the body of drum  500  as shown in  FIG. 17  with both members to attach to—the drum heads (skins)  18  and  19 , and hardware (lugs) to hold the drum head (skin) as the hitting surface of drum. The transparent member  20  ensure forwards and downwards visibility  1 . 
         [0000]    Further, it goes without saying that the position of the transparent member is not limited to the midsection of the drum and on the circumference of the drum, but any shape is available if ensures the required visibility. 
         [0045]    As for the method- 5 , the midsection of the body of drum  600 , is formed with learance  21  without use of transparent member  20 . Composing the drum  600  with bracket (lugs)  22  to fix the drum head (skin) and members to fix the drum heads (skins)  18  and  19 , it can ensure its forwards and downwards visibility  1 . 
         [0000]    Further, it goes without saying that the position of the clearance is not limited to the midsection of the body of the drum, but any position is possible if it ensures the required visibility. 
       DESCRIPTION OF THE NUMERAL REFERENCES 
       [0046]      100  bass drum for marching in general 
         [0047]      200  drum, which is made with circular shapes on its body providing visibility 
         [0048]      300  drum, which is made with square transparent members on a par to it 
         [0049]      400  drum, in which transparent members are used on its body 
         [0050]      500  drum, in which transparent members are used on its body 
         [0051]      600  drum, in which a clearance is made at the midsection of its body 
         [0052]      0  performer 
         [0053]      1  Blind spot of the performer 
         [0054]      2  body of the drum 
         [0055]      3  forwards visibility of the performer- 0   
         [0056]      4  downwards visibility of the performer- 0   
         [0057]      5  circular hole located at the side of the performer, to ensure the forwards visibility of the performer- 0   
         [0058]      6  circular hole located at the opposite side of the performer, to ensure the downwards visibility of the performer- 0   
         [0059]      7  circular hole located at the opposite side of the performer, to ensure the forwards visibility of the performer- 0   
         [0060]      8  square opening located at the side of the performer, to ensure the forwards visibility of the performer- 0   
         [0061]      9  square opening located at the opposite side of the performer, to ensure the forwards visibility of the performer- 0   
         [0062]      10  square opening located at the opposite side of the performer, to ensure the forwards visibility of the performer- 0   
         [0063]      11  circular transparent member, to close the openings made in the drum  200   
         [0064]      12  square transparent member, to close the openings made in the drum  200   
         [0065]      13  square transparent member, composing a part of the body of the drum  300