the following description focuses on how the invention , in its various embodiments , may be used with an apple . its use , however , is not limited only to an apple , and persons of ordinary skill and manual dexterity should have no trouble in applying the tool and the method of using it to any other suitable fruit or vegetable that does not have a large seed in its middle and has a firm flesh . as best understood with reference to fig1 , the user should choose an apple 100 of a size that will allow it to be held comfortably in his or her hand while it is to be smoked . for convenience , it may initially be held firmly on a steady support surface such as a tabletop or even one of the seated user &# 39 ; s knees ( not shown for simplicity ). the front or tip end 202 of a blade element 200 ( described below in greater detail ) is then forcibly penetrated into an upper portion of the apple in a direction indicated by arrow “ p 1 ” and then turned around that direction as indicated by curved arrow “ t 1 ” to effect a substantially cylindrical cut without irregularly tearing up either the skin or the flesh of the apple . obviously , the penetration and cutting will be easy if the blade edge is sharp . however , to avoid injury to either the user , or to his or her clothing if the tool is carried in a pocket , it is best to make the edge thin without making it sharp enough to inflict unintentional cuts or scratches . a blade element having a somewhat rounded tip and made of a metal such as stainless steel , with an edge thickness preferably not more that about 1 / 32 nd of an inch should be quite satisfactory . with a little manipulation of the blade element the flesh of the apple can be broken at the bottom of the cylindrical cut and a piece 102 removed as indicated by the sequential arrows “ r 1 ”. with a little experience , the user should be able to thus create a bowl 104 of suitable shape and size to contain and retain the desired quantity of smoking material , e . g ., pipe tobacco . fig5 shows other details in a larger perspective view of blade element 200 , particularly a pair of elongate edges 204 a , 204 b on opposite sides . these , as best seen in fig2 , serve as cutting edges to form a cylindrical blind bore 106 by forcible insertion of the tip end 202 , preferably in the axial plane of the apple on the opposite side relative to the bowl 104 , along a direction indicated by arrow “ p 2 ”, followed by a turning about that direction as indicated by arrow “ t 2 ”. with a little manipulation , the user can thus break out and extract a cylindrical piece 108 of the apple as indicated by sequential arrows “ r 2 ”. as best seen in fig7 , in cross - sectional view at transverse section vii - vii in fig5 , the shape and size of blade element 200 are selected to facilitate the formation of a correspondingly sized cylindrical blind bore 106 . bore 106 is preferably made of a diameter in the range of about 0 . 3 - 0 . 5 inch although this is not critical and may be freely selected by the user . blade element 200 if made of a metal can be modified with only a little effort to adjust the separation of edges 204 a , 204 b to determine the diameter of bore 106 . it may , alternatively , be made of any other stiff and durable plastics material , e . g ., nylon , or even a composite . at the proximate end of blade element 200 may be affixed a retention element 206 to facilitate movable joining thereat to other elements as described below . the specific structure of this portion of blade element 200 is not critical , and even a simple aperture at the proximate end of blade element 202 may suffice to serve this function . as best seen in fig6 , in the longitudinal cross - sectional view at section vi - vi in fig5 , the tip end 202 may be curved in slightly to facilitate the break - out of portion 108 of the apple to create blind bore 106 . this inward curve should also help in extraction and removal of portion 102 during creation of bowl 104 in the apple . as best seen in fig3 , an elongate pin element 300 , preferably securely connected movably to blade element 200 , is now employed to form a relatively small diameter hole 110 extending from the bottom of bowl 104 toward and into cylindrical bore 106 near its blind end . this establishes communication between bowl 104 and bore 106 . pin element 300 may conveniently be made of a length of wire preferably about ⅛ th inch in diameter with a looped end and a length of about 3 inches . alternatively , for connection with blade element 200 , pin element 300 may be provided with a retention element 302 . once the apple pipe has been made as described above , the user should inspect it to ensure that bowl 104 cleanly communicates with bore 106 via hole 108 . if there is excess juice released in bowl 104 it may tend to collect in the bottom and block opening 110 at the upper end of hole 108 . this may be remedied by inserting a folded piece of paper tissue into bowl 104 to suck away and remove the excess juice . opening 110 , being small , preferably about ⅛ inch across , eliminates the need to provide a screen or other means to ensure that the smoking material does not fall into hole 108 . also , if inspection reveals that there is inadequate flow of air ( and thus eventually of smoke ) because hole 108 does not cleanly communicate with bore 106 , the user may reinsert pin element 300 via opening 110 in a slightly different direction than was chosen for original hole 108 until the problem is corrected . inspection involves looking down both bore 106 and the new hole 108 individually . once the apple pipe has been prepared and inspected , a quantity of smoking material 400 may be pressed into bowl 104 and ignited , with suction applied to the open end 112 of bore 108 to promote combustion and extract smoke . as may be expected , flow of the smoke through the apple will cool the smoke , remove some of the tar from it , and entrain in the smoke some of the volatile constituents contained in the apple itself , i . e ., add apple flavor to the smoke . it should be possible to smoke the apple pipe for a reasonable period , and it may even be feasible to smoke it more than once over a day . when the smoking is over , unless the apple is very small , the user may even be able to eat some of the apple on opposite sides of the smoke passage . if a user wishes to create a relatively large bowl 104 , in another embodiment there is provided a scooping element 900 , best seen in fig9 and 12 , which has a thin elongate body 902 similar to that of pin element 300 and a slightly curved scoop end 904 a little wider than end 202 of blade element 200 . the desired relatively large bowl can be scooped out of the apple with scoop end 904 exactly as described above with regard to blade element end 202 , i . e ., by penetration and turning to cut out and extract portion 102 . the blade , pin and scoop elements , or just the first two of them , may be kept together for cooperative use on a regular key ring . however , if the user prefers , they may be held movably relative to each other within a cover 1000 by a rivet or screw 1002 . see fig1 and 11 . portions 1004 and 1006 of cover 1000 will cover the blade , pin and scoop elements when they are not in use . each of these elements can be easily rotated out of cover 1000 about rivet or screw 1002 as and when needed . a d - ring 1008 may be provided to permit retention of cover 1000 to a user &# 39 ; s key ring or belt for convenience in carrying the tool . use of a firm vegetable like a potato , instead of an apple , to make a pipe as described above should be a very similar experience except for any flavor the smoke may pick up during use of the resulting pipe . provided the penetration and edge portions of the blade and pin elements are thin or sharp enough the method of using the tool should be virtually the same . all obvious variations and modifications of the invention as disclosed herein are intended to be comprehended within the invention which is limited solely by the claims appended below .
a tool for forming a smoker &# 39 ; s pipe from a firm fruit or vegetable such as an apple or a potato has cooperating elements with which a user readily creates a bowl for retaining ignited smoking material , without the need for a screen , and a passage communicating with the bowl to allow drawing of cooled , flavored smoke through the selected fruit or vegetable .