Abstract:
The apparatus includes a first plate for supporting the first surface of the article adjacent to the edge part of the article, a second plate extending from one end of the first plate in order to support the second surface of the article adjacent to the edge part of the article, a band connected to both side ends of the first plate such that a worker is able to securely hold the apparatus using one hand, and a non-skid member attached to at least one of inner surfaces of the first and second plates, which make contact with the first and second surfaces of the article, so as to prevent the apparatus from sliding along the article.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a cutting tee square. More particularly, the present invention relates to a cutting tee square equipped with cutting tools for simply and rapidly performing cutting work or drawing work with respect to various plate members. 
   2. Description of the Prior Art 
   As generally known in the art, a tee square is one of drawing instruments used for drawing lines. The tee square includes a body formed with scale marks and a head installed perpendicularly to the body. The user can draw various lines using the body of the tee square or set squares cooperating with the body of the tee square while moving the tee square up and down along a lateral side of a drawing board in a state in which a basis plane of the head closely adheres to the lateral side of the drawing board. Meanwhile, a cutting tee square has been developed by modifying the tee square in order to cut various plate members used as construction materials, such as boards, panels or glass plates. 
   For instance, Korean Utility Model Registration No. 20-32981 discloses a “board cutting ruler” in which a fixing square is movably installed in a hole of a transverse bar, one end of a ruler formed with scale marks is coupled to the fixing square, and a slider is coupled to the ruler such that the slider can move lengthwise along the ruler. In addition, a cutter blade is installed on a lower surface of the slider so as to cut a board. According to the above board cutting ruler, the fixing square moves lengthwise along the transverse bar together with the ruler or the slider moves lengthwise along the ruler in such a manner that the board or plate members can be cut by means of the cutter blade. 
   In addition, Korean Utility Model Registration No. 20-32981 discloses a “glass cutting T-measure” in which one end of a square is fixed to the center of an upper surface of a support member and a cutter is installed on the square such that the cutter can move lengthwise along the square. According to the above glass cutting T-measure, the cutter moves lengthwise along the square in a state in which the support member closely adheres to one end of the glass plate, thereby cutting the glass plate. 
   However, according to the above conventional cutting squares, the user must move the cutter lengthwise along the square in order to cut the plate member. Therefore, when it is necessary to cut a plate member having a length larger than that of the square, the user must repeat the cutting work several times while moving the cutting square along the cutting line formed in the plate member. Since the cutting work for the plate member must be performed several times, workability may be significantly degraded. 
   In addition, the board cutter and the glass cutter are dedicated to cut the board and glass, respectively. Accordingly, the user must purchase both the board cutter and the glass cutter, which imposes excessive expenses on the user and causes inconvenience to the user because the user must carry the board cutter and the glass cutter so as to use them. 
   Meanwhile, an ink scale is used in various construction fields in order to draw lines on plate members. That is, after measuring the size of the plate member, drawing lines are marked on both side ends of the plate member. Then, one end of the ink scale is fixed to the drawing line marked on one end of the plate member and the other end of the ink scale is aligned corresponding to the drawing line marked on the other end of the plate member. In this state, the user pulls and releases the ink scale in such a manner that ink marks can be formed on the plate member. However, this may lengthen working time while complicating the drawing work. 
   SUMMARY OF THE INVENTION 
   Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a cutting tee square including a head, a body and a cutting tool, in which, after determining a cutting size of a plate by moving the body relative to the head, the head and the body are moved along one end of the plate together with the cutting tool while supporting a blade of the cutting tool on the plate and a front end portion of the body, thereby precisely and simply cutting various plates at a high speed. 
   Another object of the present invention is to provide a cutting tee square including a head, a body and a cutting tool or a writing tool, in which the head and the body are moved simultaneously with the cutting tool or the writing tool so that cutting work or drawing work can be performed through a single process regardless of a length of a plate and in which a user can exchange the cutting tool with a new one depending on the type of the plates. 
   In order to accomplish these objects, there is provided a cutting tee square used for cutting various plates using a cutting tool, the cutting tee square comprising: a head having a basis plane, which closely adheres to one end of a plate so as to serve as a basis line for cutting, and being provided at an upper surface thereof with a guide having a hole extending widthwise along the head; a body movably inserted into the hole of the guide and provided at both lateral sides thereof with straight blades having scale marks; a first handle installed on an upper surface of the body adjacent to a front end portion of the body so as to allow a user to grip the first handle together with the cutting tool; and a fixing unit installed through the guide so as to securely fix the body to the head. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: 
       FIG. 1  is a perspective view illustrating a cutting tee square according to one embodiment of the present invention; 
       FIG. 2  is a perspective view illustrating the operational state of a cutting tee square for cutting a plate member using a cutter according to one embodiment of the present invention; 
       FIG. 3  is a plan view illustrating the operational state of a cutting tee square for cutting a plate member using a cutter according to one embodiment of the present invention; 
       FIG. 4  is a perspective view illustrating the operational state of a cutting tee square for cutting a glass plate using a glass cutter according to one embodiment of the present invention; 
       FIG. 5  is a plan view illustrating the operational state of a cutting tee square for cutting a glass plate using a glass cutter according to one embodiment of the present invention; 
       FIG. 6  is a sectional view illustrating a body fixed to a head by means of a fixing unit in a cutting tee square according to one embodiment of the present invention; and 
       FIG. 7  is a sectional view illustrating a body being moved relative to a head in a cutting tee square according to one embodiment of the present invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description and drawings, the same reference numerals are used to designate the same or similar components, and so repetition of the description on the same or similar components will be omitted. 
   Referring to  FIGS. 1 ,  2  and  4 , a cutting tee square according to the present invention includes a cutting tool  10  used for performing cutting work or drawing work with respect to a plate  2 , such as a board, a panel or a glass plate.  FIGS. 2 ,  3  and  6  show the cutting tool  10  including a cutter  12  used for cutting a board  2   a , such as a gypsum board, a veneer board, or a Styrofoam panel. The cutter  12  includes a blade  12   a  and a blade housing  12   b  for receiving the blade  12   a  therein. The blade  12   a  is in the form of a “cutter blade” which can be chopped into several pieces through cutting lines  12   c .  FIGS. 4 ,  5  and  7  show the cutting tool  10  including a glass cutter  14  used for cutting a glass plate  2   b . The glass cutter  14  includes a holder  14   b  equipped with a blade  14   a  and a handle  14   c  connected to the holder  14   b  such that the user can grip the holder  14   b  using the handle  14   c.    
   Referring to  FIGS. 1 ,  2 ,  4 ,  6  and  7 , the cutting tee square according to the present invention includes a head  20  and a body  30  coupled to the head  20  and installed perpendicularly to the head  20 . A basis plane  22  is formed at one end of the head  20 . The basis plane  22  adheres to one lateral end of the plate  2  so as to serve as a basis line for cutting. A guide  24  is installed at the center of an upper surface of the head  20 . The guide  24  has a hole  26  having a rectangular section and extending widthwise along the head  20 . A screw hole  28  is formed at the center of an upper surface of the guide  24 . A front end of the guide  24  is aligned in line with the basis plane  22  of the head  20  and a cutting section  24   a  is formed at a front portion of the guide  24  so as to allow the user to easily see the basis plane  22  of the head  20 . 
   The body  30  is movably inserted into the hole  26  formed in the guide  24  such that the body  30  forms a “T” shape together with the head  20 . The body  30  has a length suitable for cutting work and drawing work for the plate  2 . For instance, the body  30  has a length of 60 cm. Straight blades  32   a  and  32   b  are provided at both lateral sides of the body  30  and scale marks  34  are formed lengthwise along the straight blades  32   a  and  32   b  of the body  30  so as to measure the length of an object. The user can easily see the scale mark  34  aligned at the basis plane  22  of the head  20  through the cutting section  24   a  of the guide  24 . 
   In addition, a groove  38  is formed at a front end portion  36   a  of the body  30  so as to receive the cutting tool  10 , that is, the blade  12   a  the cutter  12  or the holder  14   b  of the glass cutter  14 . A stopper  40  is installed at a rear end portion  36   b  of the body  30 . The stopper  40  is coupled with one end of the guide  24  so that the body  30  can be prevented from being separated from the hole  26  of the guide  24 . 
   As shown in  FIGS. 6 and 7 , a first handle  50  is mounted on the upper surface of the body  30  adjacent to the front end portion  36   a  of the body  30  so as to allow the user to grip the first handle  50  together with the cutting tool  10 . The first handle  50  includes a first protrusion  52  fixed to the upper surface of the body  30  adjacent to the front end portion  36   a  of the body  30  and a second protrusion  54  integrally formed with a lateral portion of the first protrusion  52  while extending toward the rear end portion  36   b  of the body  30 . 
   On the basis of the upper surface of the body  30 , the first protrusion  52  has a first predetermined height H 1  in such a manner that the blade housing  12   b  may not interfere with an upper end portion of the first protrusion  52  when performing the cutting work for the plate  2  by extracting the blade  12   a  from the blade housing  12   b  of the cutter  12  while supporting the blade  12   a  on the front end portion  36   a  of the body  30 . In addition, as shown in  FIGS. 2 and 4 , the second protrusion  54  has a second predetermined height H 2  higher than the first predetermined height H 1  of the first protrusion  52 , so that the user is able to make contact with the lateral side of the second protrusion  54  by using a finger of the user. 
   Referring again to  FIGS. 1 ,  2 ,  4 ,  6  and  7 , the cutting tee square of the present invention further includes a fixing unit  60  installed through the guide  24  so as to securely fix the body  30  to the head  20 . The fixing unit  60  includes a screw  62  screw-coupled into a screw hole  28  of the guide  24 , a pressing plate  64  installed at a lower end portion of the screw  62  so as to press the body  30  toward the head  20 , and a second handle  66  installed at an upper end portion of the screw  62  so as to allow the user to rotate the screw  62  in the forward or reverse direction. In addition, the user can easily move the cutting tee square of the present invention to another places by gripping the second handle  66 . 
   Hereinafter, the operation of the cutting tee square having the above structure according to the present invention will be described. 
   Referring to  FIG. 7 , if the user releases the screw  62  from the screw hole  28  of the guide  24  by rotating the second handle  66  of the fixing unit  60 , the pressing plate  64  is spaced apart from the upper surface of the body  30  so that the user can move the body  30  along the hole  26  of the guide  24 . 
   In this state, the user closely adheres the basis plane  22  of the head  20  to one end of the plate  2  and then moves the body  30  along the hole  26  of the guide  24  such that the front end portion  36   a  of the body  30  can be precisely aligned in line with the cutting position of the plate  2 . At this time, the user can precisely set the cutting size of the plate  2  by measuring the length between one end of the plate  2  and the cutting position of the plate  2  based on the scale marks  34  formed along the straight blades  32   a  and  32  of the body  30 . 
   Then, as shown in  FIG. 6 , after aligning the front end portion  36   a  of the body  30  in line with the cutting position of the plate  2 , the user again fastens the screw  62  by rotating the second handle  66  of the fixing unit  60 . As the screw  62  is again fastened, the pressing plate  64  presses the upper surface of the body  30  so that the body  30  can be securely fixed between the head  20  and the pressing plate  64 . 
   Referring to  FIGS. 2 to 5 , the user adheres the basis plane  22  of the head  20  to one end of the plate  2  by gripping the second handle  66  of the fixing unit  60  using one hand of the user. In this state, the user adheres the blade  12   a  of the cutting tool  10  to the front end portion  36   a  of the body  30  using the other hand of the user such that the plate  2  can be cut by means of the blade  12   a  of the cutting tool  10 . At the same time, the user grips the second protrusion  54  of the first handle  50  together with the cutting tool  10  so as to securely hold the cutting tool  10 . At this time, the user can apply force to the lateral side of the second protrusion  54  by using the thumb of the user. Meanwhile, as shown in  FIGS. 4 ,  5  and  7 , the holder  14   b  of the glass cutter  154  is received in the groove  38  of the body  30 . 
   As shown in  FIG. 2 , the height H 1  of the first protrusion  52  positioned adjacent to the front end portion  36   a  of the body is preset such that the blade housing  12   b  may not interfere with the upper end portion of the first protrusion  52  when the blade  12   a  of the cutter  12  adheres to the plate  2  and the front end portion  36   a  of the body  30 . In addition, the height H 2  of the second protrusion  54  is higher than the height H 1  of the first protrusion  52 , so that the user can safely grip the blade housing  12   b  and the second protrusion  54  with strong force, thereby securely holding the cutter  12 . As a result, it is possible to precisely and easily cut the plate  2  at a high speed. 
   In addition, the user adheres the basis plane  22  of the head  20  to one end of the plate while supporting the blade  12   a  of the cutter  12  on the plate  2  and the front end portion  36   a  of the body  30 , and then moves the head  20  along the cutting line of the plate  2  by using the second handle  66 . As the head  20  moves, the body  30  and the cutter  12  are also moved, so that the plate  2  is cut by means of the blade  12   a  of the cutter  12 . The blade  12   a  of the cutter may move parallel to one end of the plate  2 , the cutting line of the plate  2  can be maintained parallel to one end of the plate  2 , so that the plate  2  can be precisely and easily cut at a high speed through a single cutting process regardless of the length of the plate  2 . 
   In addition, a typical writing tool can be provided in the cutting tee square of the present invention, instead of the cutting tool  10 , so as to draw lines on the upper surface of the plate. The procedure of the drawing work is substantially similar to that of the cutting work, so it will not be further described below. 
   As described above, according to the cutting tee square of the present invention, after determining the cutting size of the plate by moving the body having the scale marks relative to the head, the head and the body are moved along one end of the plate together with the cutting tool while supporting the blade of the cutting tool on the plate and the front end portion of the body, thereby precisely and simply cutting various plates at a high speed. In addition, the head and the body are moved simultaneously with the cutting tool or the writing tool so that cutting work or drawing work can be performed through a single process regardless of the length of the plate and the user can exchange the cutting tool with a new one depending on the type of the plates. 
   Although a preferred embodiment of the present invention has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.