Abstract: A sewing machine is disclosed that includes a needle bar allowing attachment of a sewing needle including a needle eye to a lower end of thereof; a needle-bar lifting/lowering mechanism that moves the needle bar up and down; a presser foot; a presser foot lifting/lowering mechanism that moves the presser foot up and down; a hook that is provided with a beak for seizing a needle thread loop formed at the needle eye and that rotates in coordination with the up and down movement of the needle bar; and a controller that controls the presser foot lifting/lowering mechanism so as to resize a needle thread loop by lifting the presser foot to a predetermined height in coordination with a swing position of the needle bar and a predetermined height of the needle bar where the beak meets the needle thread loop.

Abstract: A sewing machine is disclosed that includes a needle bar allowing attachment of a sewing needle including a needle eye to a lower end of thereof; a needle-bar lifting/lowering mechanism that moves the needle bar up and down; a presser foot; a presser foot lifting/lowering mechanism that moves the presser foot up and down; a hook that is provided with a beak for seizing a needle thread loop formed at the needle eye and that rotates in coordination with the up and down movement of the needle bar; and a controller that controls the presser foot lifting/lowering mechanism so as to resize a needle thread loop by lifting the presser foot to a predetermined height in coordination with a swing position of the needle bar and a predetermined height of the needle bar where the beak meets the needle thread loop.

Abstract: A handle mounting structure for a sewing machine includes a handle including a grip having both ends provided with a pair of legs having distal ends respectively, two pairs of shaft-like members mounted on the distal ends of the legs, a pair of pivots mounted on either front cover or rear cover for supporting the legs respectively, the pivots having engagement holes either corresponding one of the paired shaft-like members of each leg engages, the handle being slid in a projecting direction of said one shaft-like member before said one of the front and rear covers is mounted to the other of the front and rear covers so that said one shaft-like member is engageable with the engagement hole.

Abstract: A handle mounting structure for a sewing machine includes a handle including a grip having both ends provided with a pair of legs having distal ends respectively, two pairs of shaft-like members mounted on the distal ends of the legs, a pair of pivots mounted on either front cover or rear cover for supporting the legs respectively, the pivots having engagement holes either corresponding one of the paired shaft-like members of each leg engages, the handle being slid in a projecting direction of said one shaft-like member before said one of the front and rear covers is mounted to the other of the front and rear covers so that said one shaft-like member is engageable with the engagement hole.

Abstract: A sewing machine has a needle bar up/down moving mechanism, a needle bar oscillating mechanism, a needle bar interrupting mechanism, a thread tension adjusting mechanism, and a thread tension releasing mechanism. The sewing machine further includes a driving mechanism that transmits a driving force of an electric motor to the needle bar oscillating mechanism, the needle bar interrupting mechanism and the thread tension releasing mechanism. The driving mechanism comprises a first cam and a second cam which are driven by the electric motor. The first cam has an oscillating cam face that controls the needle bar oscillating mechanism and an interrupting cam face that controls the needle bar interrupting mechanism. The second cam has a releasing cam face that controls a thread tension releasing mechanism. Therefore, the needle bar oscillating mechanism, the needle bar interrupting mechanism and the thread tension releasing mechanism can be driven by a common electric motor.