Cutting instrument or tool
OwnerMichael Cooninventor
Life of this patent
Estimating the term…
Abstract
A hand saw principally for use on sheet rock or gypsum wall board having a bi-partite handle and a thumb stop. The saw blade is provided with in-line teeth which cut on the forward and backward motion of the saw and which are provided with large cleanouts. The cutting teeth are also in line and the saw blade itself is thicker on the cutting surfaces than on the top. The arrangement permits a higher grade of premium steel to be used and the teeth can be readily sharpened. The saw may also have a blade that is sharpened on the top to a cutting edge resulting in an all purpose cutting instrument.
Claims13
A cutting instrument or tool comprising a handle, an elongated saw blade secured to said handle provided with a top and bottom edge and having a cutting surface on the bottom edge of said blade having spaced cutting teeth, each tooth having a tooth edge and provided with opposite side surfaces a substantially large open area between adjacent teeth functioning as a clean-out, the top edge of said blade being thinner than the bottom edge cutting surface of said blade, and the opposite side surfaces of each tooth edge being flat and substantially parallel to each other, each tooth edge of the saw blade having a broad flat cutting surface that cuts a material in a substantial planing action across the entire width of said tooth, and all of said teeth being in line.
A cutting instrument as claimed 1 wherein said handle is provided with a thumb stop.
A saw blade for attachment to a handle having a bottom edge with a cutting surface provided with a single row of aligned teeth, each tooth having opposite side surfaces, a top edge on said saw blade, a substantially large open area between adjacent teeth functioning as a clean-out, said top edge of the blade being thinner than the bottom edge cutting surface of said blade, and the opposite side surface of each tooth edge being flat and substantially parallel to each other, the cutting surface of each of said aligned teeth having a predetermined width that cuts the material in a substantially planing action across the entire width of said tooth, and all of said teeth being in-line.
A saw comprising a handle, an elongated blade secured to said handle provided with a bottom edge and a top edge and having a cutting surface on the bottom edge of said blade provided with spaced cutting teeth, each of said cutting teeth having opposite side surfaces, each of said cutting teeth being disposed at an obtuse angle from the longitudinal axis of the saw blade, a substantially large open area between adjacent teeth functioning as a cleanout, the top edge of said blade being thinner than said bottom edge, the opposite side surfaces of each tooth being flat and substantially parallel to each other, and each tooth of the saw blade having a broad flat bottom edge having a predetermined width that cuts the material in a substantial planing action across the entire width of the tooth, and all of said teeth being in-line.
Dependencies are inferred from the claim text.