摘要:
A hook gate for flat bed sewing machines characterized in that the hook is inclined relative to a horizontal line and is placed into a recess formed in the upper portion of the sewing machine bed, along with a freely rotatable latch bracket. The recess is covered by a sliding plate which engages, during its closing and opening displacements, suitable surfaces of the latch bracket to cause the latch bracket to rotate towards and away from the hook gate, respectively.
摘要:
The invention relates to a sewing machine which incorporates a device for automatically controlling the transverse displacements of the sewing needle and for controlling the fabric feeding mechanism in order to obtain various stitching patterns. The device is of the type which comprises a stack of axially displaceable rotary cams and the aforementioned controlling is achieved through the use of two separate cam followers, each of which includes separate follower points which respectively may be acted upon by either the rotary cams or by other non-rotary elements.
摘要:
The present invention is a pneumatically actuated control system for sewing machines to begin and end the sewing cycle and simultaneously to place and retain the work clamp or presser foot into proper relationship with the material during the sewing cycle and comprises a first pneumatic circuit of a control valve, adjustable inlet valve and exhaust valve which circuit is mechanically linked to the sewing cycle control element in the sewing machine and a second pneumatic circuit of a first control valve, a second control valve actuated by the mechanical linkage of the first circuit, a third control valve actuated by the work clamp control element in the sewing machine, an adjustable inlet valve, and an exhaust valve which second circuit is mechanically linked to the work clamp and means to selectively actuate the control valve of the first circuit and the first control valve of the second circuit.
摘要:
An assembly for lubricating an enclosed horizontal compressor motor comprising a disc mounted on the motor shaft adjacent a flat surface containing a groove which communicates with a lower oil reservoir and an upper sump, from which sump lubricant flows into a recess in said motor shaft and thence through oppositely extending helical grooves in said motor shaft to rotor cooling fins which spray lubricant onto stator coils and through ducts in said motor shaft and in a piston connected to said motor shaft to lubricate a piston cylinder.