Roller for inserting filler material in crevices

Claim 1

A roller for inserting filler material to the proper depth in crevices comprising (a) a circular structure having a central circular section being at least 1/16 of an inch, but less than 1/4 of an inch thick, a first and second truncated right angle cone section of a smaller diameter than said central section and appended on each side of said circular section where the bases of said truncated cone sections are adjacent to the central section and a third and fourth circular section of uniform thickness appended to the truncated part of said cone sections and having a diameter which is as large as the diameter of cones at their truncated sides and having a thickness of at least 1/16 of an inch wherein the center lines of said central section, said truncated cone sections and said third and fourth circular sections coincide and wherein said circular section is symmetrical on either side of the center lines passing through said central circular section, wherein the leading edge of the base of said truncated cone sections are located from 1/8 to 2/8 of an inch from the outer diameter of said central circular section wherein the angle of the cone sides to the base line of said truncated cone sections is 49° wherein the central circular section has a diameter of 3 inches and wherein said third and fourth circular sections have a uniform thickness of from 1/16 to 15/32 of an inch and have a uniform diameter of 21/4 of an inch; (b) a shaft passing through an opening in said circular structure so as to support said circular structure and allowing it to rotate, the axis of said shaft being coincident with the axis of said circular structure; (c) two support members supporting said shaft on both sides of said circular structure and allowing said circular structure to rotate about said shaft and (d) a base plate connected to said support members, such that circular structure is free to rotate and being supported by said support members and said base plate.