Abstract:
Handle for angular brush characterized in that said handle comprises, at one end of said handle, a tenon having a profile inclined to the central axis of said handle, said profile comprising at least one circular recess, said profile further comprising at least one lateral chamfer along a major side thereof.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to a handle for an angular brush having an holding tenon for the glue, to the relative brush and to the method for its construction.  
         [0002]     Brushes consist of an elongated handle to which bristles are fixed. The bristles are firstly glued together at one end to form a pack. They are then fixed to the handle by means of a collar. The collar is fixed to the brush by two nails or clouts.  
         [0003]     With prolonged use of the brush, these nails tend to cause cracks to open in the wood of the handle, they can rust and hence ruin the brush, to the extent of making it unserviceable.  
         [0004]     Moreover, when they are inserted into the wood they tend to raise the collar, hence forming a slight projection on the collar which can be annoying if not dangerous to the user.  
       SUMMARY OF THE INVENTION  
       [0005]     The object of the present invention is to provide a brush which is without the drawbacks of the known art, and is of simple construction.  
         [0006]     This object is attained according to the invention by a handle for a brush of angular type, characterized in that said handle comprises, at one end of said handle, a tenon having a profile inclined to the central axis of said handle, said profile comprising at least one circular recess, said profile further comprising at least one lateral chamfer along a major side thereof.  
         [0007]     Said object is also attained by a brush of angular type comprising a handle and bristles, characterized in that said handle comprises a tenon having a profile inclined to the central axis of said brush, said profile comprising incorporating means, said bristles being fixed to each other and also fixed to said handle by glue, said glue gripping said incorporating means and said bristles.  
         [0008]     Said object is also attained by a method for constructing a brush of angular type including a handle having an end inclined to its central axis, a collar and bristles, comprising the steps of providing suitable recesses in said end of said handle; providing on said end of said handle at least one lateral chamfer along a major side thereof; inserting said bristles through a first opening in said collar; pouring glue into said collar through a second opening opposite said first opening; inserting said end of said handle into said collar through said second opening; said glue gripping said bristles and said recesses.  
         [0009]     Further characteristics of the invention are described in the dependent claims.  
         [0010]     In accordance with the present invention an angular brush can be constructed without the use any nail. The construction is simplified compared with traditional constructions. The brushes no longer present breakages or cracks in the wood. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0011]     The characteristics and advantages of the invention will be apparent from the ensuing detailed description of one embodiment thereof, illustrated by way of non-limiting example in the accompanying drawings, in which:  
         [0012]      FIG. 1  is a front view of a brush;  
         [0013]      FIG. 2  is a front view of a handle;  
         [0014]      FIG. 3  is a side view of a handle;  
         [0015]      FIG. 4  is a top view of a handle. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0016]     With reference to the accompanying figures, the brush consists of a handle  10 , bristles  12  and a collar  16 .  
         [0017]     At one end, namely in its wider end, the handle  10  has a tenon  11  having on its outer edge a profile  13  which is inclined by an angle α of about 70° to a central axis  15  of the brush, in the direction of the brush length.  
         [0018]     This is therefore a so-called angular brush, i.e. presenting the end of the bristles  12  inclined by the predetermined angle α. The collar  16  is also of inclined type.  
         [0019]     The profile  13  presents a chamfer  20 , preferably on both sides (the longer sides) to enable it to more easily penetrate into the glue subsequently used for gluing.  
         [0020]     At the point at which it engages the handle  10 , the tenon  11  has a perimeter slightly less than that of the handle along a section taken at that point. In this manner an edge  17  is obtained at which to position the collar  16 .  
         [0021]     The bristles  12  are grouped together to form a pack suitable for the brush dimensions, and are partially inserted into the collar  16 . A glue of the type normally used for this type of application is inserted through the other opening of the collar  16 , to fix the bristles  12  together. For this operation, the bristles  12  and the collar  16  are placed in an inclined position, equal to the inclination of the angle α of the brush, so that the glue settles on the head of the bristles in a horizontal position.  
         [0022]     The tenon  11  is then inserted through that end through which the glue has been inserted, and becomes glued to the bristles  12 .  
         [0023]     The operation can be carried out in a single step by inserting a quantity of glue adequate both for gluing the bristles and for gluing the handle. Alternatively, but requiring an additional working step, the glue for gluing the bristles  12  can be inserted as a first step, left to dry and then a new quantity of glue be inserted followed by insertion of the handle  10 .  
         [0024]     Hence in both cases, between the bristles  12  and the profile  13  of the handle  10  a region  14  of previously determined dimensions is created, in which the sealing glue for the brush is present.  
         [0025]     The recesses  18 , and in particular the undercuts obtained thereby, serve to cause the glue to adhere to and securely grip the handle  10 . The recesses  18  are provided as laterally as possible to reduce any stresses undergone by them.  
         [0026]     The recesses  18  are of circular shape as they are made by simple drill bits. They can also have other shapes (for example of dovetail type with a aperture at their tip, or two or more oblique cuts) such as to form elements having an undercut in which the glue can grip, but in that case the construction may be more complex and require more than one working step.  
         [0027]     Brushes of the known art, in which the collar is fixed to the handle by nails, require a metal insert to bind the bristles to the handle. The insert, having suitable holes or other gripping elements for the glue, is inserted into the glue used to glue the bristles, it extending along the interior of the collar and being fixed to the handle by the nails.  
         [0028]     According to the present invention, this insert is no longer required, so further saving production costs.  
         [0029]     By virtue of the edge  17  the collar  16 , which is contained within it and does not project from it, cannot annoy the user. Because of the particular inclination of the profile  13 , which equals that of the bristles  12 , the size of the region  14  can be dimensioned such as to reduce as much as possible the quantity of glue used while at the same time maintaining secure fixing, so reducing glue costs and the relative weight. The collar  16  preferably presents ribs which by gripping the materials in its interior prevent it from moving or sliding along the tenon  11 .