| Patent Number |
Title Of Patent |
Date Issued |
| 5047722 |
Apparatus for measuring internal resistance of wet cell storage batteries having non-removable c |
September 10, 1991 |
| Apparatus for measuring the total internal resistance of a multicell battery having positive and negative terminals employs a first transistor device having an input and an output and having mutually exclusive conductive and non-conductive electric states. An arrangement of resistanc |
| 4957828 |
Emergency battery monitor |
September 18, 1990 |
| An emergency battery monitor is adapted for use with at least one storage battery. The battery has first and second output terminals across which an output voltage is produced, the battery, when in normal operation, exhibiting an output voltage falling within a nominal value range having |
| 4825789 |
Low bobbin thread detector |
May 2, 1989 |
| An optical low bobbin thread detector is disclosed utilizing particularly cost effective matrixed light emitting diodes for bobbin thread detection and alarm, and virtually eliminating false alarms by employing a system requiring detection of a predetermined number of successive valid lo |
| 4763589 |
Solar powered indicating device for sewing machines |
August 16, 1988 |
| A solar cell powered detecting and indicating system applicable to mechanically controlled sewing machines without D.C. power supplies connected to regular A.C. house mains, and detecting and indicating circuits minimizing power consumption for compatability with solar generated powe |
| 4712496 |
Machine stitched buttonhole and method of producing same |
December 15, 1987 |
| A method of producing a buttonhole is disclosed in which individual legs thereof are composed of stitches alternately extending parallel to the length of the buttonhole and substantially transversely of said length. The stitches extending parallel to said length are formed at twice the |
| 4373459 |
Electronically controlled sewing machine arranged to sew a sequence of stitch patterns |
February 15, 1983 |
| An electronically controlled multiple pattern sewing machine is provided with the capability of sewing a repetitive sequence of patterns. The sewing machine operator selects, one by one, the patterns desired to be sewn and these are stored in a temporary memory in the order of their |
| 4232617 |
One-step buttonholer with hall effect sensor |
November 11, 1980 |
| A sewing machine is disclosed having means for automatically sewing a buttonhole. A Hall Effect sensor switch interacts with a lever, which engages adjustable spots on a buttonhole gaging presser foot, to provide signals for electronic circuit logic indicating the end of a buttonhole |
| 4214543 |
Electronically controlled top feed arrangement for a sewing machine |
July 29, 1980 |
| A sewing machine is provided with an electronically controlled top feed arrangement wherein an upper feed dog and a presser foot are adapted to alternately apply and relieve pressure upon a work fabric, the upper feed dog and the presser foot being oppositely phased with respect to each |
| 4188900 |
Method of buttonhole formation |
February 19, 1980 |
| A method of forming a buttonhole including two spaced apart rows of zig zag stitches so that each row is formed in a like manner with the final overlaying stitches accomplished in the forward direction and which may be initiated by a barring stitch adjacent the edge of the garment follow |
| 4166423 |
Adaptive sewing machine |
September 4, 1979 |
| A sewing machine is disclosed which includes at least one regulatable operating instrumentality, such as, for example, an adjustable needle thread tensioner. Means are provided for generating signals indicative of different parameters which affect the ultimate overall stitch, such as, |
| 4159688 |
Method of forming a buttonhole pattern |
July 3, 1979 |
| A method of forming a buttonhole pattern including two spaced-apart rows of zig zag stitches so that each row is formed in a like manner includes sewing a row of narrow zig zag cording stitches in a first direction and subsequently covering the cording stitches with one of the parallel r |
| 4138955 |
Stitch length control for electronic sewing machine |
February 13, 1979 |
| An electronic sewing machine with pattern selecting means is provided with control circuitry operable to increase stitch lengths in the work feeding direction by a predetermined integral multiple in a selected pattern by providing for pattern data retention and the discontinuance of endw |
| 3977338 |
Feed reversing arrangement for sewing machines |
August 31, 1976 |
| A sewing machine is disclosed in which the pattern of successive needle penetrations during stitching is influenced in accordance with pattern information stored within the machine in a static memory. This pattern information is retrieved and utilized electronically to control, among |
