Abstract: An electronic control arrangement for a sewing machine with a frame having access openings at the top and bottom thereof and supporting therein functional mechanical and electromechanical and electrical sewing machine components. The electronic control arrangement includes a control panel disposed over a portion of the top access opening and interconnected with printed circuit boards having electronic components thereon for regulation of the electromechanical sewing machine components, the entire arrangement being organized to be removable as a whole for replacement or substitution from the top access opening. Means are provided accessible from the bottom access opening to removably support the control arrangement at the bottom thereof and provide a heat sink therefor.

Abstract: The present disclosure relates to zig-zag sewing machines including means for controlling the bight stops in order to produce ornamental patterns. In particular, the disclosure relates to electronically controlled sewing machines having storage means for storing stitch information and wherein logic means are used to select and release stitch information in timed relation with the operation of the sewing machine. The disclosure of the invention has particular application in those sewing situations wherein it is desired to use more than one needle in a single needle holder of the needle bar which therefore necessitates a limitation on the magnitude of the jogging or swinging of the needle bar in order to accommodate the multiple needles in the aperture of the needle plate. In accordance with the disclosure of the present invention whenever more than one needle is used in the sewing machine the electronic control of the bight stops is automatically put into effect whenever such multiple needle mode is selected.

Abstract: A control device for a zigzag sewing machine is disclosed in which the width of zigzagging and the neutral position of needle vibration may be separately influenced and in which for any given maximum width of zigzag stitching the extreme left and right hand neutral positions of needle vibration can always be made to coincide with the left and right hand sides of that maximum width of zigzag stitching.

Abstract: An electronic control package for a sewing machine having a frame supporting functional components such as thread handling components, a needle bar gate and needle bar, feed system, electrical actuating means for the needle bar gate and feed system, electric drive means, transformer, power supply and pulse generator. A panel supporting pattern selection and other sewing machine control means may be combined with a printed circuit board carrying control circuitry including a pattern memory means and electronics required to convert pattern information from the memory means to a form usable by the electrical actuating means for control of needle position and, if desired, for regulation of feed. By exchanging panels, the type of control and appearance of the machine may be altered as desired. By exchange of panel and printed circuit board major changes in machine feature capability and appearance may be accommodated.

Abstract: A dustless portable electric router comprising a base having a dust chamber formed below a motor mounted to the base to be axially adjustable therein. A pair of handles are connected to the base with a passage formed in one of the handles in communication with the dust chamber. A blower is formed on the top side of the motor with the router connected to and driven by an extension from the motor armature shaft. A flexible conduit interconnects the handle passage and the blower, and a dust bag collects the dust and debris from the blower discharge.The dust chamber has side openings which are enclosed by detachably connected plastic shrouds that provide operator visibility. A light is connected in the other handle and serves to illuminate the dust chamber and the surrounding work. The dust bag is hung from the blower at the "back" of the router housing, and the blower is positioned remote from the work engaging flat bottom of the router base.

Abstract: The present disclosure relates to zig-zag sewing machines including means for controlling the bight stops in order to produce ornamental patterns. In particular, the disclosure relates to electronically controlled sewing machines having storage means for storing stitch information and wherein logic means are used to select and release stitch information in timed relation with the operation of the sewing machine. The disclosure of the invention has particular application in those sewing situations wherein it is desired to use more than one needle in a single needle holder of the needle bar which therefore necessitates a limitation on the magnitude of the jogging or swinging of the needle bar in order to accommodate the multiple needles in the aperture of the needle plate. In accordance with the disclosure of the present invention, whenever more than one needle is used switch means responsive to the presence of more than one needle automatically puts the machine into a multiple needle mode of operation.

Abstract: Narrow amplitude calibrated pulses are injected into the RF input ports of microwave receivers such as those used for interference and intensity measurements to gain calibrate the receivers. The upper frequency limit of the prior art calibration source is greatly extended by frequency modulating the pulse generator to obtain pulses that vary in repetition rate between 95 and 105 MHz so that beginning with the tenth harmonic, a continuous band of pulses of predetermined amplitude sweeps from 950 MHz up to approximately 18 GHz.

Abstract: The method of fabricating a sewing machine needle is disclosed in which the needle blade including the long groove and the eye portion with a thin eye-accommodating web is cold formed in one finless flow pressing operation. The method of forming the needle orienting flat on the needle butt and laterally displacing the needle blade relatively thereto by a flow pressing operation is disclosed. A method of flaring the side flanges particularly in the eye portion to facilitate threading and a needle so constructed is also disclosed.

Abstract: An electronic home knitting machine which functions pursuant to patterning instructions on a program card and in response to the operation of control devices by an operator causing needle actuators on the carriage of the machine to be selectively operated and fabric unit in a prescribed manner on the machine is provided with an acutely discriminating adaptive card reader for detecting instruction marks on the card and means operable to indicate to an operator an error in the reading of the card.

Abstract: A cam section block is provided with variously arranged flat and angular needle controlling cam members, one arrangement of which is effective to cause needles moving relative to the cam section block to knit, another arrangement of which will cause needles to tuck and still another arrangement of which will cause needles to welt.

Abstract: A gas meter temperature compensating tangent device having a tangent block to which is adjustably connected a tangent arm for journaling a crankshaft. The tangent block has a guideway formed in alignment with the axial line of the tangent arm. A plurality of nested "U" shaped bi-metal strips have one end pivotably connected to the tangent block and the other end connected to a tangent wrist which is slideably disposed in the guideway. The bi-metal strips will sense temperature changes in the gas and force the tangent wrist to slide in the guideway to increase or decrease the distance between the tangent wrist and the crankshaft.The tangent device provides improved accurate deflection due to temperature changes as a result of built-in radial rigidity of the tangent wrist relative to the tangent arm.

Abstract: Circuitry for rapidly switching off the power to a universal motor upon sensing of overloading of the motor. Sudden motor overloading results in rapid speed reduction that is detected by measuring the voltage drop across the motor armature. The circuitry detects this drop and removes a gating signal to a triac switch in series with the motor to remove the power to the motor within one cycle of the applied AC.

Abstract: A circular knitting machine is provided with cam section blocks defining a closed needle butt cam track with upper and lower arcuate portions.

Abstract: The steps in the manufacture of a sewing machine needle are disclosed in which the needle blade is shaped by first being subjected to a flow-pressing operation to form a groove with raised side flanges and thereafter the eye portion is subjected to a die pressing operation which can further raise the side flanges. The needle is then completed by eye punching, pointing, and fin removal.

Abstract: A home knitting machine is provided with electronic control means which function pursuant to patterning instructions on a program card and in response to the operation of control devices by an operator causing needle actuators on the carriage of the machine to be selectively operated and fabric knitted in a prescribed manner on the machine.BACKGROUND OF THE INVENTION1. Field of the InventionThe invention relates to automatic knitting machinery and has particular application to home knitting machines which can be programmed to produce prescribed patterns on a fabric.2. Description of the Prior ArtAutomated home knitting machines are now well known and are exemplified by the machines of the following Patents and applications:U.s. pat. No. 3,885,405 -- issued May 27, 1975French Pat. No. 2,212,830 -- Reg. July 23, 1972Japanese Application No. 85853, laid open Nov.

Abstract: A cylinder and dial circular knitting machine is provided with:1. a striping box that may feed a draw thread or yarn,2. adjustable placer and raise cams, and3. means for controlling the operation of such striping boxAnd cams so as to cause the machine to knit fabric separable at single courses of draw threads into strips of predetermined widths with locked and non-running edges.

Abstract: A slam-shut valve provides overpressure protection in a pipeline in the event of pressure regulator failure. The slam-shut valve is normally held in the open position by a latch assembly. Overpressure or failure of the regulator will automatically trigger operation of the slam-shut valve to close the same and prevent further passage of the gas through the pipeline. The reset assembly must be manually operated to re-engage the latch assembly so as to open the slam-shut valve once it has been triggered closed.The latch assembly coacts with a release assembly having a release shaft which detachably holds a spring latch affixed to a lever pivotally mounted upon the reset shaft of the reset assembly.Subsequent to its release, the spring latch will be re-engaged with the release shaft in order to reopen the slam-shut valve. Dependent upon the position of the release shaft, the spring latch may be required to deflect prior to relatching upon the release shaft.

Abstract: A battery powered power tool which includes a housing having one portion for journaling the motor and another portion detachably connected thereto, for carrying the battery pack. Suitable plug and socket means are provided in each of the housing portions, so that when such portions are interconnected, the battery pack will be in circuit with the motor. Connecting means in the form of a retaining nut non-rotatively affixed to the motor portion of the housing, and a rotative screw carried by the battery portion of the housing serve to mechanically join the housing portions . The screw is retained in the battery portion by a neck-down portion formed in the aperture in which the screw is disposed. The screw will be threaded or otherwise forced through the neck-down portion which resiliently yields to permit passage of the enlarged threaded section thereof.

Abstract: A thread shield, for a sewing machine having means to interrupt needle bar reciprocation and a take-up with a threading slot to an eyelet thereof, to discourage thread escape from the eyelet or double threading of the eyelet by loose, slung around thread. The sewing machine take-up moves in an up and down path from an uppermost position, where thread may be drawn to the eyelet by way of the threading slot, to a lower position where appreciable slack thread forms when the needle bar reciprocation is interrupted. At the position where appreciable slack thread forms, the take-up moves closely adjacent to an upstanding rib which overlaps the entry to the threading slot thus to deter thread loops from reentering the threading slot. The forward surface of the upstanding rib is tapered in a horizontal plane towards the take-up lever to impede thread, which might otherwise move from the eyelet rearwardly down the threading slot to the threading slot entry.

Abstract: This disclosure relates to a method and apparatus for forming patterned cut pile tufted fabrics and, in particular, colored patterned tufted pile fabrics. The patterns are essentially produced by selectively backrobbing one leg of a cut loop thereby producing a cut loop having one relatively long leg and one relatively short leg. By selectively backrobbing one leg of a cut loop of one color yarn and by refraining from backrobbing a leg of a cut loop of at least a second color, the second color will become predominant in the pattern by virtue of having twice as many long legs of that color making up the surface of the cut pile tufted fabric. The disclosure also encompasses a method and apparatus for producing relatively long nap cut pile tufted fabrics having controlled J-cut loops.