Patent ID: 7523711

Claim:
A horizontal rotary hook for a sewing machine, which includes an inner bobbin case holder accommodating a bobbin therein and an outer rotating hook enclosing the bobbin case holder and rotated in a predetermined direction with the bobbin case holder being accommodated in the rotating hook, the rotating hook having an outer peripheral wall formed with a bobbin-thread passing opening through which the bobbin thread passes, the horizontal rotary hook comprising: an enlarged opening defined in the outer peripheral wall of the rotating hook so as to be continuous to the bobbin-thread passing opening; a beak member separate from the rotating hook and mounted on the rotating hook so as to close the enlarged opening; and a fitting holder provided on the rotating hook so that a lower part of the beak member is fitted thereinto, thereby holding the beak member; wherein the beak member has an outer surface, the rotating hook has a bottom, and the fitting holder is formed so as to protrude outward from the outer peripheral wall of the rotating hook and has a reinforcing peripheral wall continuous to the outer peripheral wall of the rotating hook and supporting the outer surface of the beak member and a reinforcing bottom continuous to the bottom of the rotating hook.