Comb attachment having adjustment mechanism to accommodate multiple blade sizes

A hair clipper comprising:

• a prime mover;
• a first lower blade having a cutting edge and a rear edge opposite and generally parallel to the cutting edge;
• a second lower blade having a cutting edge and a rear edge opposite and generally parallel to the cutting edge, the distance between the cutting edge and rear edge of the second lower blade being larger than the distance between the cutting edge and rear edge of the first lower blade, one of the first lower blade and second lower blade attached to the clipper being an active blade and the other of the first lower blade and second lower blade not attached to the clipper being an inactive lower blade;
• an upper blade being reciprocated adjacent the active lower blade under the influence of the prime mover to create a shearing action between the upper blade and the active lower blade for cutting hair;
• a comb attachment attachable to the active lower blade and defining a length of cut for the clipper;
• an attachment mechanism for attaching the comb attachment to the active lower blade;
• a slide module mounted to the comb attachment and including a retaining tab, the retaining tab being positioned adjacent the rear edge of the active lower blade to resist sliding movement of the comb attachment in a forward direction with respect to the active lower blade;
• and
• an adjustment mechanism interconnected between the comb attachment and the slide module, the adjustment mechanism being shiftable to move the retaining tab forward into a first position adjacent the rear edge of the first lower blade when the first lower blade is the active blade, and being shiftable to move the retaining tab rearward into a second position adjacent the rear edge of the second lower blade when the second lower blade is the active blade.