Abstract: A button attaching apparatus adapted for attaching a button to a cloth, including a body having a handhold portion and a barrel, the barrel defining a longitudinal top-open chamber, a pair of needles fastened to the barrel at the front side and having a respective longitudinal guide groove, a push handle sliding in the longitudinal top-open chamber of the body on the outside, a pair of projector rods respectively connected to the push handle and moved by it to drive a wire nail along the longitudinal guide grooves of the needles into the cloth in securing the button to the cloth, and, a pair of springs adapted for imparting a backward pressure to the projector rods.

Abstract: A locator-paging system including a master kit and a plurality of sub kits, in which the master kit can be actuated to transmit a searching signal to each sub kit, causing every sub kit to transmit an answering signal. The master kit generates a warning signal when at least one sub kit does not transmit an answer back. The master kit can also be actuated to transmit paging signals to the sub kits. As a result, the sub kits are actuated to generate a sound and light alarm when a paging signal from the master kit is recognized. Furthermore, the sub kits can be actuated to transmit a paging signal to the master kit which causes the master kit to generate a sound and light alarm, indicating which sub kit is calling.

Abstract: A double-thread hand sewing machine transmission mechanism including a steering gear driven by a motor, a driven wheel, a transmission gear driven by the steering gear to turn the driven wheel, an upper-thread arm reciprocated by the driven wheel to move a needle up and down in making stitches, the improvement includes an under-thread bobbin, an under-thread bar having a locating ring at one end mounted around an eccentric locating ring on the transmission gear at one side and a rack at an opposite end meshed with a toothed portion on the under-thread bobbin and driven to turn the under-thread bobbin back and forth.

Abstract: A transmission mechanism includes a transmission gear shaft having a speed reducing gear on one end driven by a DC motor via a driving gear and a transmission gear on an opposite end meshed with a driven gear on an eccentric gear shaft, which has an eccentric axle coupled to a reciprocating block via a crank and driven to reciprocate the reciprocating block causing it to alternatively move the needle arm of a mini-sewing machine up and down in performing the process of stitching.

Abstract: A ribbon inker is disclosed including a transmission gear driven by a motor drive to rotate two spindles and a inking reel through a driven gear and a belt for permitting the ribbon of a ribbon cartridge to be moved by the inking reel over an inking pen, a reverse reel coupled to a reverse gear meshed with a gear on the inking reel for moving the ribbon of a ribbon cartridge in the reverse direction, two pitch adjusting devices and two elevation adjusting devices adjusted to hold down the ribbon cartridge to be inked according to its thickness and width.

Abstract: An improved driving structure for a mini-sewing machine, includes an elongated frame body having a front end and a rear end, a sewing needle which may be rigidly connected to the front end of the elongated frame body, and is arranged to operatively point downwards. A sliding block is pivotably connected to the rear end of the elongated frame body, and is formed with an elongated slot near its lower end. A driving gear and a cap are disposed on respective opposite sides of the sliding block. A coupling mechanism couples the driving gear to the cap; first and second portions of a guiding mechanism are eccentrically located on the driving gear and on the cap, respectively, and are coupled to one another through the elongated slot of the sliding block for operatively imparting a reciprocal movement to the sliding block, and thereby also to the sewing needle. A driving mechanism operatively rotates the driving gear, and is adapted to be driven by a motor.