Abstract: An inlet orifice device to control thruput flow for a pressure regulator, and to prevent increases in inlet pressure from causing variations in outlet pressure. The novel inlet orifice device also permits improved relief valve performance by limiting the maximum available thruput flow to constant levels, within the design range of inlet pressure, regardless of the variation of the inlet pressure supplied within such range.The improved inlet orifice device serves the dual function of controlling the thruput flow by (1) varying the open area (flow limiter area) on the inlet side of the pressure regulator thru the said device and (2) cooperating with the valve to vary the open area (throttling area) on the outlet side of the said device. The improved inlet orifice device includes a fixed nozzle on the inlet side and a control member moveable relative the nozzle and the valve, which valve is disposed on the outlet side and actuated responsive the diaphragm.

Abstract: A latch needle is disclosed with a sliding bolt of unique construction which is easily manufacturable and which serves with particular effectiveness in accordance with this invention in carrying out blindstitch sewing.

Abstract: A solenoid is provided in which the armature unit includes a primary plunger and a secondary plunger arranged in telescopic association one with the other and disposed so that the secondary plunger, having both a smaller mass and a smaller air gap than the primary plunger, initially draws in the primary plunger against the anvil without altering the stroke of the primary plunger. The coaction between the two plungers materially reduces the electric energy required to operate the solenoid. While not limited in its application to any particular form of magnetic circuit or to any particular size of magnet, the invention is especially useful in connection with mechanism in which a miniature solenoid is required, and also when it is required to employ a solenoid in which the armature stroke is relatively large and the power requirement must be small.

Abstract: A hand-held single-thread lockstitch sewing machine or stitcher for attaching buttons, snaps, bar tacks, or the like, employs a boat-type shuttle for capturing the loop thrown by the needle. A limited length of bottom thread is stored by manually positioning a lever which directs the loop over a finger-like projection in the shuttle to trap the loop. Repositioning the lever will allow the machine to sew normally with the loop passing around the shuttle and picking up the stored thread. Bottom tension is applied by magnetically attracting the shuttle to the carrier wall and passing the bottom thread between the shuttle and the carrier wall.

Abstract: There is disclosed a sewing machine having a needle bar gate vibrating mechanism whereby the sewing machine is adapted to produce zigzag stitches. The needle bar gate vibrating motion is obtained through the use of two spaced apart circular magnets mounted on a rotating shaft of the sewing machine and having disposed between them a pair of bar magnets operatively connected to the needle bar gate, the polarization of the magnets being such that one of the circular magnets exerts attractive force on the bar magnets while the other circular magnet exerts repulsive forces. As the shaft rotates these forces reverse, resulting in the imparting of vibratory motion to the needle bar gate.

Abstract: A child's sewing machine having a frame including a work-supporting bed, a vertical standard projecting upwardly therefrom adjacent one end of said bed, a hollow bracket arm extending horizontally from said standard longitudinally above the bed and terminating in a sewing head, said bracket arm having a through aperture formed therein adapted to accommodate a veriical spool pin providing rotatable support for a thread supply for a thread carrying needle, said frame further carrying stitch sewing instrumentalities including a thread carrying needle. An adapter plate is secured to the bracket arm and has provision for a horizontal spool pin thereon and an upstanding thread guide.

Abstract: A sewing machine loop taker support bracket that is adjustable to permit the use of various size loop takers. The loop taker shaft is journalled in one end of the support bracket and is coupled by a timing belt to a lateral stud shaft journalled in the opposite end of the bracket, the stud shaft being driven through bevel gears by the machine bed shaft. Various size loop takers are accommodated by loosening the support bracket from the machine frame and adjusting the bracket about the stud shaft axis until the loop taker is properly positioned.

Abstract: A barometrically compensated pressure index continuous integrator assembly for measuring the throughput fluid flow of a meter comprising a pressure sensing means mounted within a chamber and adapted to expand or contract in a straight line responsive to changes in the pressure of the fluid flow. The chamber or pressure sensing means communicates with the fluid flow of the meter to communicate line pressure therefrom and the other is evacuated to substantially zero absolute pressure. A link transfer assembly interconnects the pressure sensing means with a pressure index continuous integrator for regulating the output thereof in accordance with variations in the absolute pressure being measured.

Abstract: A cabinet and work table for a sewing machine having a convertible work supporting bed capable of conversion from a flat work supporting bed to a cylinder bed. The cabinet work supporting surface is divided into two parts, a fixed rear work supporting surface and a laterally shiftable front work supporting surface. The sewing machine is supported in the cabinet with the flat work supporting bed forwardly of, co-planar and contiguous with the fixed work supporting surface. The shiftable work supporting surface of the cabinet is laterally shiftable from a position co-planar with the fixed work supporting surface of the cabinet and the flat work supporting bed of the sewing machine to a position subjacent the flat work supporting bed of the sewing machine and the fixed work supporting surface of the cabinet whereupon the flat bed may be converted to cylinder bed use.

Abstract: A carriage for a hand knitting machine in which a plurality of cams, including upper and lower Jacquard cams, are sequentially arranged and are adjustable between inoperative and operative positions so as to define at least one raceway for the butts of needles reciprocable in the needle bed of the machine. At least the upper and lower Jacquard cams are actuable by individually operable lever means between said inoperative and operative positions. At least one of the lever means is interconnected with at least one of the other lever means such that actuation of one of the said lever means simultaneously actuates at least one of the other lever means to thereby actuate a predetermined combination of said cams.

Abstract: A support for a dust bag for use in connection with an electrically driven surface treating machine to collect dust created by the machine during operation which comprises a rod member detachably connected to an exhaust conduit on the machine. Means are provided to insure proper positioning or alignment of the dust bag support so that the support may function to hold the dust bag up and away from the work piece so as not to interfere with the operator in using the machine.

Abstract: Apparatus and method of making a very dense tufted fabric using a programmed intermittent backing fabric feed in combination with means for changing the relative lateral displacement of the point of needle penetration into the backing fabric. The method in general comprises feeding a backing fabric through the machine, tufting stitches into the backing, stopping the fabric feed and initiating relative lateral displacement between the backing fabric and the needles, tufting additional stitches into the backing fabric and either initiating further relative displacement between the backing fabric and the needles and tufting again or feeding the fabric forward and repeating the process.

Abstract: A low inertia presser device for overedge sewing machine. A horizontally disposed presser bar arm and a similarly disposed presser bar arm leaf spring are mutually pivoted at one end on substantially horizontal and vertical pivots to permit vertical movement and swing out capability. A main pressure spring acts on the presser bar arm; which in turn, through an arm extension to the presser bar arm approximately midway its pivoted end and the point of action of the main spring, applies pressure approximately midway along the presser bar arm leaf spring. A presser foot is supported on the end of the leaf spring opposite its pivoted end.

Abstract: A circuit is disclosed for controlling and regulating the speed of a D.C. motor fed from a single-phase A.C. supply. A full-wave power bridge using two diodes and two silicon controlled rectifiers (SCR's) supplies unfiltered rectified A.C. to the motor. A first programmable unijunction transistor (PUT) is used to trigger the SCR's in response to a timing capacitor voltage applied to its anode. The timing capacitor is charged from a zener-regulated, full-wave bridge source through a speed-control resistor and thus provides triggering of the SCR's at a phase angle determined by said speed-control resistor. To obtain consistent triggering at the same phase angle, a second PUT is used to reset the voltage on the timing capacitor to zero at the end of each half cycle of the A.C. voltage to insure that the initial charge condition of said capacitor is always the same.