摘要:
A sewing machine includes a mounting member, a needle bar driving mechanism, and a needle thread take-up driving mechanism. The mounting member has two sides mounted on the left and right of the needle bar driving mechanism and the needle thread take-up driving mechanism, respectively. The mounting member is supported on one of the sides by the main shaft, a rotating shaft rotated with the main shaft or a bearing member for the main shaft or the rotating shaft so that the mounting member is rotated relative to the machine frame and the main shaft or rotating shaft. The mounting member is supported on the other side by the main shaft or a supporting shaft substantially concentric with the rotating shaft and extending in a same direction as the rotating shaft so that the mounting member is rotated relative to the machine frame and the main shaft or rotating shaft.
摘要:
A sewing machine includes a sewing machine body formed with a cassette mount, a thread cassette having a supply of thread and detachably attached to the cassette mount, and a moving speed limiting unit limiting a moving speed of the thread cassette when the thread cassette is attached to the cassette mount. The moving speed limiting unit includes a moving member capable of moving substantially together with the thread cassette in the course of movement of the thread cassette to a predetermined position in the cassette mount, a rotating member rotated by movement of the moving member, and a rotational resistance applying unit applying rotational resistance to the rotating member.
摘要:
A needle bar thread guide for a sewing machine includes a thread guide body mounted on a needle bar and having a threading portion for threading the sewing machine, an introducing portion formed on the thread guide body for introducing a needle thread to the threading portion, and a fall-off preventing member disposed at a position near to spaces over and below the thread guide body. The fall-off preventing member allows the needle thread to be introduced via the introducing portion to the threading portion and prevents the needle thread introduced to the threading portion from falling off from the introducing portion.
摘要:
An embroidery frame includes an outer subframe with a section that breaks continuity, an inner subframe that is snapped inside of the outer subframe to hold a cloth with the outer subframe, a clamp mechanism for clamping the outer subframe against the inner subframe. The clamp mechanism includes a pair of screw attachment sections facing each other at both ends of the continuity-breaking section of the outer frame, an adjustment screw attached across the screw attachment sections for adjusting a space between the screw attachment sections, an operation shaft for rotating the adjustment screw that moves in a range from a first position at which the operation shaft is directed in an axial direction same as or different from the adjustment screw, and a second position at which the operation shaft is tilted in a direction increasing a space with the outer subframe, and a coupling mechanism for coupling together the operation shaft and the adjustment screw, and transferring a torque of the operation shaft to the adjustment screw.
摘要:
A pattern selection apparatus displays patterns and allows any of the displayed patterns to be directly selected. The apparatus comprises a control circuit, a display unit, an item designating dial and a selection establishing key. The control circuit indicates on the display unit where a cursor-highlighted displayed pattern is located relative to all the patterns under the same subset heading. As the cursor is moved in response to rotation of the item designating dial, the pattern location indication is correspondingly changed. Pushing the selection establishing key selects the cursor-highlighted pattern. Thus, any of the patterns displayed on the display unit is selected quickly and easily.
摘要:
An attachment structure for detachably attaching a workpiece holder to a movable body used in embroidery stitching in a sewing machine. The movable body is movable in a horizontal plane in synchronism with a reciprocating motion of a sewing needle in order to move the workpiece relative to the needle. The workpiece is supported on the workpiece holder held by the movable body. The attachment structure includes pair of pins disposed at one of the workpiece holder and the movable body, pair of engaging grooves engageable with the pins and formed at remaining one of the movable body and the workpiece holder, projecting body disposed at one of the workpiece holder and the movable body, and resilient member engageable with the projecting body and disposed at remaining one of the movable body and the workpiece holder.
摘要:
A semiconductor memory device containing a number of memory cells each having a floating gate, an erase gate, and a control gate. In a data erasure mode, electrons are discharged from the floating gate into the erase gate electrode. An insulating film interlaid between the erase gate and the control gate has a three-layered structure consisting of a silicon oxide film, a silicon nitride film, and a silicon oxide film.