referring to fig1 there is there shown , designated generally by the numeral 2 , an unformed or unblocked hat having a crown portion 3 and a brim portion 4 . as indicated previously , the hat may be assumed to be fabricated from felt - like material which may be formed into any selected style by the application of steam heat to the fiber mat forming the hat and then shaping the hat while the fiber is in a &# 34 ; no memory &# 34 ; condition as a result of such steam heating . as indicated previously , the particular style into which a hat is shaped is conventionally done by hand , so that each hat , even when it is intended that it be formed in the same style , is somewhat different , or lacking in uniformity with other such hats of the same style . this occurs because when styling is effected by hand and without using any kind of a guide , there are bound to be dissimilarities in the ultimate shape to which the hat is formed . to obviate such dissimilarities , and to insure that each hat shaped into a particular style will be exactly the same as others , the subject matter of this invention comprises a rigid hat - shaped blocking structure designated generally by the numeral 6 in fig2 and including a crown portion 7 and a brim portion 8 . in this instance , the crown portion of the hat blocking structure is provided with a top surface 9 that is centrally depressed as illustrated in fig5 and 6 , the depressed surface 9 being surrounded by a rolled portion 12 which extends completely around the depressed portion and which is somewhat greater in depth adjacent the rear of the hat as seen on the right hand side in fig2 through 6 , and gradually decreasing in depth as the top surface 9 approaches the forward end of the hat as viewed on the left hand side of the figures in fig2 through 6 , so that the forward portion of the crown of the hat blocking structure for this style crown normally projects somewhat higher than the rear portion of the crown as illustrated . the crown portion of the hat - shaped blocking structure is also provided with generally ovate walls 13 tapering upwardly to merge smoothly with the top surface 9 . as illustrated in fig2 and 4 , the two opposite sides of the ovate walls 13 are depressed toward each other to provide a recess 14 on each side of the crown portion . formed integrally with the lower end of the ovate wall 13 is a radially inwardly extending annular mounting member 16 the outer periphery 17 of which is integral with the lowermost edge of the ovate wall 13 , while the inner periphery 18 of the annular mounting member 16 defines an aperture opening into the hollow interior of the crown portion of the hat - shaped blocking structure . as illustrated in fig5 and 6 , the radially inwardly extending mounting member 16 is provided with a pair of apertures 19 adjacent the front and rear of the hat - shaped blocking structure for purposes which will hereinafter be explained . it will thus be seen that the crown portion of the hat shaped - blocking structure , without more , constitutes a rigid structure , preferably fabricated from an appropriate synthetic resinous material reinforced , for instance , with fiberglass , and on its exterior surface 21 , conforms to the shape of a desired hat style . thus , the crown portion of the hat - shaped blocking structure may be utilized to effectively provide a form on which the crown of an unblocked or unshaped hat may be supported so as to initially provide a desired crown shape , or to reconstruct one that has become misshapen . however , for maximum utility , the crown portion of the hat - shaped blocking structure is utilized in conjunction with a detachable brim portion designated generally by the numeral 8 and including a centrally disposed mounting flange portion 22 having an outer periphery 23 and an inner periphery 24 as shown . also provided in the mounting flange portion 22 , which is preferably in the form of an annulus that conforms to the configuration of the annular mounting flange member 16 associated with the open end of the crown portion , are a plurality of apertures 26 positioned in the mounting flange member 22 so as to be in alignment with the apertures 19 in the mounting flange member 16 associated with the crown portion . thus , when the apertures 19 and 26 are aligned , the inner and outer peripheries of the two mounting portions 16 and 22 are generally in registry with each other and the two mounting portions may then be detachably secured together by an appropriate bolt 27 dimensioned to pass snugly through the apertures 19 and 26 , and which may be secured therein so as to provide a clamping action between the two mounting portions by an appropriate thumb nut 28 . extending radially outwardly from and integral with the outer periphery 23 of the brim mounting flange 22 , is a brim support portion 29 formed , like the mounting portion 22 and the crown portion previously discussed , from a rigid synthetic resinous material , preferably reinforced with glass fiber . the brim support portion 29 is sculptured to provide on its top surface 31 the configuration desired for a particular style of hat brim . thus , as illustrated in fig3 in use the hat - shaped blocking structure which includes the crown portion and the brim portion detachably bolted together as illustrated in fig6 is appropriately supported on a flat surface such as a table top 32 with or without a pedestal 33 extending between the table top and the under side of the brim mounting portion 22 to firmly support the hat - shaped blocking structure on the table top . an unblocked or unshaped hat 2 is then lowered over the crown portion as illustrated in fig3 until the brim of the hat comes to rest on the hat brim support portion 29 . at this point , the hat draped over the hat - shaped blocking structure is subjected to the application of hot steam , as illustrated in fig4 so as to soften the fibers and cause them to lose their &# 34 ; memory .&# 34 ; it will be seen that as soon as sufficient moist heat has been applied to the hat , the crown of the hat may be molded by hand so that it conforms exactly to the depression formed in the top surface of the crown portion of the blocking structure , while the sides of the crown may be depressed to fill the depressions 14 formed in the ovate walls 13 . in like manner , the brim of the hat may be molded so that it conforms to the configuration of the upper surface 31 of the brim support portion 29 . once the desired style has been achieved by causing conformation of the hat to the shape of the hat - shaped blocking structure , the heat is removed and the hat is permitted to dry and cool while remaining on the hat - shaped blocking structure . this generally requires only a few minutes , especially if warm air , such as from a fan or hair dryer type apparatus is used to accelerate cooling and drying . it will of course be seen that any selected style of crown portion may be detachably interconnected with any selected style of brim support portion . accordingly , as viewed in fig8 a different style crown and different style brim are constructed in essentially the same manner , the crown portion and the brim portion being fabricated from a hard synthetic resinous material ; preferably reinforced with fiberglass , and adapted to be detachably secured as previously discussed . in this way , a customer who purchases a hat has a greater range of styles to choose from , while the owner of the hat store is provided the facility of blocking the purchased hat in whatever style is selected . having thus described the invention , what is sought to be protected by letters patent of the united states is as follows :
presented is a hat blocking structure that is convertible to provide for the blocking of different styles of brims with different styles of crowns on hats to be blocked .