Patent ID: 8020735

Claim:
A detachable threader, which comprising: an upper holder block, where an orifice is arranged at its central section, and two holes arranged at rear-end of both sides; a brake, where a snapper is arranged at central section on both sides of the brake, and a hole on the front section; the snapper is locked with the hole of the upper holder block; a needle stand, which is penetrated into the orifice of the upper holder block, provided with an adapting hole, a wiring duct, a notch, a blade hole, a threading groove, a V-shaped groove, a trough, a limitation slot and a through-hole, of which the blade hole is provided with an embedded blade, and the trough with a clamping slot; a propeller, which is covered on both sides of the needle stand; the needle stand is protruded into the orifice of the propeller, and a snapper is arranged at left and right sides for locking with the hole of the baser; a through-hole is arranged under front and rear sides, and the joint pin at rear end is used for penetrating into the punch hole of the threading sheet; a threading sheet, which is fixed at rear end of the propeller, and allowed to move freely in the threading groove of the needle stand; a base, where a holding groove is placed centrally to accommodate the propeller and needle stand; a spacer is arranged at front and rear ends within the holding groove, a snapper is arranged externally on both sides of the rear end for locking with the hole of the upper holder block, and a flange is arranged peripherally at the bottom; a detachable pedestal, at top of which an inner space with oblique surface is opened downwards, and at both sides on the top of which a sliding slot is arranged; an orientation pin, which is placed on the spacer of the base, and also inserted into the through-hole of the needle stand and propeller; a restoring spring, which is sleeved onto the limitation slot of the needle stand; when the upper holder block presses down, the brake drives the propeller so that the threading sheet on the brake could move forwards within the threading groove of the needle stand, enabling the stitch to penetrate into the needle hole, whilst the inner space of the detachable pedestal is used to accommodate the needle and stitch.