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BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    The present invention relates to a cutting apparatus for transverse curtain lath, especially to a cutting apparatus for transverse curtain lath, which has simple structure and easy operation.  
           [0003]    2. Description of the Prior Art  
           [0004]    FIGS.  1  to  3  show the conventional cutting apparatus. FIG. 1 shows the swing handle type cutting apparatus, which comprises a station  7 , a swing handle  71  atop the station  7  and pivotal to one end of the station  7 . The swing handle  71  drives a sliding plate  8  through a link rod  72 . The sliding plate  8  has a cutting blade  81  and the station  7  has an upper groove  93 , a lower groove  91  and a through groove  92  for curtain laths, through which the curtain lath pass. By pressing the swing handle  71 , the sliding plate  8  moves the cutting blade  81  to cut the curtain laths. Due to the swing handle  71 , the swing handle type cutting apparatus needs a large space. The cutting force is magnified by the lever arm of the swing handle  71 . The swing handle type cutting apparatus is hard to temporarily cease the cutting force. FIG. 2 shows a hand-wheel type cutting apparatus. The hand-wheel type cutting apparatus has a hand wheel  14  driving a worm  75  to rotate a cam  73 . The cam  73  drives a sliding plate  8  to press an abutting rod  84  such that the sliding plate  8  is moved laterally. The sliding plate  8  is slidably arranged on the station  7 . The station  7  also has an upper groove  93 , a lower groove  91  and a through groove  92  atop the sliding plate  8 ; and cutting blade  81  to cut the curtain laths. The cam  73  increase friction and the hand-wheel type cutting apparatus has complicated structure. FIG. 3 shows an electrical type cutting apparatus. The electrical type cutting apparatus also has a station  7  and an upper groove  93 , a lower groove  91  and a through groove  92 . The electrical type cutting apparatus has an electro motor  83  slidably arranged on a sliding rail  76 . The output of the electro motor  83  is connected to a circular saw  82  to vertically cut the curtain laths out of the grooves. However, the blade is driven by the electro motor  83 , noise is generated and electrical power is required. The electrical type cutting apparatus should be operated by special technician.  
         SUMMARY OF THE INVENTION  
         [0005]    It is the object of the present invention to provide a cutting apparatus with simple structure and easy operation.  
           [0006]    To achieve the above object, the present invention provides a cutting apparatus for transverse curtain lath. The cutting apparatus comprises a station with driving thread rod linked to a driving tenon in the station and driving a cutting board; the a cutting board sliding on a cutting surface in front of the station. The station has a feeding table on backside thereof. The driving thread rod is operated by a handle to perform linear operation. The cutting apparatus has simple structure and easy operation.  
           [0007]    The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which: 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0008]    [0008]FIG. 1 shows the front view of a prior art cutting apparatus;  
         [0009]    [0009]FIG. 2 shows the front view of another prior art cutting apparatus;  
         [0010]    [0010]FIG. 3 shows the front view of another prior art cutting apparatus;  
         [0011]    [0011]FIG. 4 shows the perspective view of the cutting apparatus of the present invention;  
         [0012]    [0012]FIG. 5 shows the cutting board of the cutting apparatus of the present invention;  
         [0013]    [0013]FIG. 6 shows the cutting board and the cutting surface of the cutting apparatus of the present invention;  
         [0014]    [0014]FIG. 7 shows the cutting board of the cutting apparatus of the present invention before cutting operation;  
         [0015]    [0015]FIG. 8 shows the backside of the station;  
         [0016]    [0016]FIG. 9 shows the locking means of the present invention;  
         [0017]    [0017]FIG. 10 is a top view showing the station and the curtain materials;  
         [0018]    [0018]FIG. 11 shows the block ruler of the present invention;  
         [0019]    [0019]FIG. 12 shows the blade of the present invention. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0020]    As shown in FIG. 4, the cutting apparatus of the present invention has a rectangular station  1  and a cutting surface  11  in front of the rectangular station  1 . The cutting surface  11  has a cutting board  2  sliding thereon. The rectangular station  1  has a thread rod  12  thereon, the thread rod  12  has a driving tenon  121  inside the rectangular station  1 . The driving tenon  121  is driven by the thread rod  12  to move laterally. The driving tenon  121  is fit into a mortise  21  of the cutting board  2 . The cutting board  2  is inward pressed and locked by an upper board  16  and a lower board  17  such that the cutting board  2  is limited laterally by the cutting surface  11 . The cutting board  2  has an opening  22  for the curtain laths. The cutting board  2  has an upper rail blade  23  and lath-forming blade  24  and lower rail blade  25  corresponding to the cutting board  2 . The rectangular station  1  further has an upper groove  13 , front groove  141 , rear groove  142  and a lower groove  15 . The front groove  141  and the rear groove  142  is separated by a baffle plate  140  and two grooves are formed for the lath-forming blade  24  and the lower rail blade  25  to cut two groups of curtain laths. The cutting stroke and cutting time are saved.  
         [0021]    With reference now to FIG. 5, the thread rod  12  is driven by a handle  120 . The driving tenon  121  is screwed to the thread rod  12 . When the thread rod  12  is rotated, the driving tenon  121  is moved laterally. By the lateral movement and the driving tenon  121  being fit to the mortise  21  of the cutting board  2 , the cutting board  2  is also driven. The upper rail blade  23  and lath-forming blade  24  and the lower rail blade  25  are also driven to cut the curtain laths.  
         [0022]    With reference now to FIG. 6, the cutting board  2  is laid against the cutting surface  11  and the opening  22  is corresponding to the grooves of the station  1 . The upper groove  13  is corresponding to the right side of the upper rail blade  23 ; the lath-forming blade  24  is corresponding to the front groove  141 ; the lower rail blade  25  is corresponding to the rear groove  142  and the lower groove  15 .  
         [0023]    With reference now to FIG. 7, the upper rail material  101  is passed through the above-mentioned groove and the identical laths  102  and  102 ′ are grouped to front bundle and rear bundle and pass through the opening  22 , respectively. The rear bundles of laths are cut with the lower rail material  103  by the lower rail blade  25 . The whole bundles of laths  32  are classified into to bundles and cut by the lath-forming blade  24  and the lower rail blade  25  to save half the stroke.  
         [0024]    With reference now to FIG. 8, the station  1  has a feeding table  4  at rear side thereof. The lateral side of the feeding table  4  has a ruler  41  and the topside of the feeding table  4  has a sliding plate  42  to push the material to be cut and a vertical baffle plate  421 . The cutting apparatus has two sets of feeding tables  4  and two sets of cutting boards and FIG. 8 only shows one set of feeding table  4  and one set of cutting board for demonstration. The station  1  has a lath-locking means  3 . The sliding plate  42  is slidably arranged on the feeding table  4  and the baffle plate  421  pushes the end of the curtain laths. The curtain laths are smoothly and parallel pushed and enter the station  1  through the upper groove  13  and the front groove  141  and the rear groove  142 .  
         [0025]    With reference now to FIG. 9, the lath-locking means  3  is used to lock the laths and two handles  31  and  32  link the pusher  310  and  320  to push the pushing plates  33  and  34 . The pushing plates  33  and  34  are corresponding to the front groove  141  and the rear groove  142 . When the two handles  31  and  32  are driven, to prevent the loose of the pushing plates  33  and  34 , the pushers  310  and  320  are locked by a locking rod  35  to prevent the backward movement of the pushing plates  33  and  34 . The locking of the locking rod  35  to prevent the backward movement of the pushing plates  33  and  34  is known art and not described in detail here.  
         [0026]    With reference now to FIG. 10, the lath-locking means  3  is used to make the two handles  31  and  32  indirectly link the pushing plates  33  and  34  such that the laths are laterally locked. The front pushing plate  33  pressed on the front laths  102 . The front groove  141  and the rear groove  142  are separated by the baffle plate  140 , which is coplanar to the clamping board  36 . When the second pushing plate  34  pushes the rear laths  102 ′, the two aligned surfaces of the clamping board  36  and the baffle plate  140  provides a straight line. Therefore, the second (rear) pushing plate  34  pushes the rear laths  102 ′ to provide a vertical effect between the laths and the station  1 . The front laths  102  are pushed by the front pushing plate  33  to provide a vertical effect between the laths and the station  1 . The pushing plates  33  and  34  ensure the laths being vertical to the station  1 . The laths are uniformly cut. The lath-forming blade  24  and the lower rail blade  25  can simultaneously cut the laths.  
         [0027]    With reference now to FIG. 11, the front side of the station  1  has a block ruler  5  with a dent  51  and a top surface  42 . The dent  51  receives the blades  23 ,  24  and  25 . The top surface  42  passes through the opening  22  and abuts the cutting surface  11 . The cutting surface  11  is deemed as the begin-cutting position; the block ruler  5  is pushed to initialize the lath cutting.  
         [0028]    With reference now to FIG. 12, the blade can be rounded blade  6  with a cutting mouth  61  and two arced angles  611  and  612 . The cutting mouth  61  has a material-ejecting side  62  to reduce cutting pressure. The two arced angles  611  and  612  are used to cut the corners  321  and  322  of the laths  102 .  
         [0029]    Although the present invention has been described with reference to the preferred embodiment thereof, it will be understood that the invention is not limited to the details thereof. Various substitutions and modifications have suggested in the foregoing description, and other will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the invention as defined in the appended claims.

Summary:
A cutting apparatus for transverse curtain lath is proposed to cut the curtain materials in transverse direction. The cutting apparatus comprises a station with driving thread rod linked to a driving tenon in the station and driving a cutting board; the cutting board sliding on a cutting surface in front of the station. The station has a feeding table on backside thereof. The driving thread rod is operated by a handle to perform linear operation. The cutting apparatus has simple structure and easy operation.