Patents Assigned to The Singer Company
  • Method for pressing finless sewing machine needles
    Patent number: 4598753
    Abstract: A method is disclosed for finlessly pressing sewing machine needles without compromising any predetermined final needle configuration by operating on the needle blank prior to any deformation by pressing step to form in the blank a varying cross-sectional area along its length matching the finished needle cross-sectional area.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: July 8, 1986
    Assignee: The Singer Company
    Inventor: Thaddeus J. Zylbert
  • Method and apparatus for sewing mitered corners of box type articles
    Patent number: 4594956
    Abstract: Methods and apparatus are disclosed for forming and securing by stitching articles with mitered corners such as bed sheets or the like in which the mitered corner is contorted into a substantially flat configuration capable of being secured by a straight line of stitching.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: June 17, 1986
    Assignee: The Singer Company
    Inventors: Artin G. Vartoukian, Robert P. Haggerty
  • Micro stepping drive
    Patent number: 4593576
    Abstract: An internally and externally threaded double nut is screwed onto the threaded shaft of a stepper motor. The nut is restrained from rotational motion thereby limiting it to translation along the shaft axis. An internally threaded output sleeve is screwed onto the external thread of the double threaded nut. The pitch of the nut internal thread is smaller than that of the external thread so that rotary motion reduction occurs at the output sleeve. A ball bearing is positioned in contacting support between the sleeve and the shaft thereby minimizing output sleeve tolerance accumulations of eccentricity and axial positioning.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: June 10, 1986
    Assignee: The Singer Company
    Inventor: Arnold Schindel
  • Molded scroller saw lock button spring
    Patent number: 4592144
    Abstract: For a powered hand tool having a plastic housing and requiring a slide button with a detent action for at least two positions with an audible indication of the transition from one position to another position, a plastic spring molded as part of the housing and having an arched surface extending into the path of a projection from the slide button which has first and second oppositely disposed tapered sides extending towards each other and terminating in a flat base portion which coacts with the arched surface to provide a detent action and an audible indication of the transition to a new position when the slide button impacts upon abutments formed as part of the housing.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: June 3, 1986
    Assignee: The Singer Company
    Inventors: Richard R. Tolbert, Troy L. McCurry
  • Wide angle area-of-interest visual image projection system
    Patent number: 4588382
    Abstract: An improved multiple channel, wide-angle visual image projection system producing a movable displayed image. The system permits the use of two or more light projectors for high resolution wide-angle image display while eliminating image abutment and alignment problems. The system forms a composite image from two or more projectors in a strategically aligned prism array, the composite image being optically transferred to a single wide-angle projection lens, gimballed in azimuth and elevation, through a pair of movable servo-driven prisms for projection onto a two-dimensional screen. The projection system is especially suited for use in an area-of-interest, helmet-slaved visual display in a flight simulator.
    Type: Grant
    Filed: January 26, 1984
    Date of Patent: May 13, 1986
    Assignee: The Singer Company
    Inventor: David L. Peters
  • Data word normalization
    Patent number: 4586154
    Abstract: A data word (bits ID.0.-ID15) is supplied to the address inputs of a memory arrangement U1, U2, U3 whose outputs S0-S3 supply to a parallel shifter SN a control word specifying the number of shifts required. As described, two read-only memories receive respective halves of the data word and feed a multiplexer U3 which selects the outputs of U1 unless the latter indicating that all its inputs are zero (or one, for negative numbers) in which case control is passed to U2. The sign bit (ID15) is supplied to both memories.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: April 29, 1986
    Assignee: The Singer Company
    Inventor: David N. Berry
  • Pathlength controller for three-axis ring laser gyroscope assembly
    Patent number: 4585346
    Abstract: A pathlength controller is provided for a three-axis, cube-shaped ring laser gyroscope assembly having three four-sided gyroscopes with six mirrors, including three movable mirrors and three fixed mirrors, wherein the controller connects between the three movable mirrors and the three fixed mirrors, and is adapted to change the pathlength of one gyroscope without changing the pathlengths of the other two gyroscopes.
    Type: Grant
    Filed: March 17, 1983
    Date of Patent: April 29, 1986
    Assignee: The Singer Company
    Inventor: Bo H. G. Ljung
  • Torque transmitting handwheel clip-on member for a sewing machine
    Patent number: 4583419
    Abstract: A handwheel is assembled to a sewing machine arm shaft with a conical screw in association with a torque transmitting handwheel clip-on member having wings thereon which are disposed in line contact with the screw, and which include planar surfaces that are caused to engage planar surfaces on radially extending ribs of the handwheel.
    Type: Grant
    Filed: November 9, 1984
    Date of Patent: April 22, 1986
    Assignee: The Singer Company
    Inventor: William Weisz
  • Liquid level sensor assembly
    Patent number: 4583085
    Abstract: An oil level sensor assembly adapted for installation in an automobile engine crankcase at the level corresponding to "low oil". The sensor assembly utilizes the principle that air is expandable whereas oil is not. Accordingly, when it is desired to sense the oil level, a predetermined amount of fluid is trapped within a chamber sealed by a diaphragm. If the oil level is adequate, then the sensor will be below the oil level and the trapped fluid will be oil. However, if the oil level is low, the trapped fluid will be air. After the fluid is trapped, a spring operating on the diaphragm attempts to expand the chamber. If the admitted fluid is air, the chamber can be expanded and a switch contact will be made, to provide an indication of low oil level. On the other hand, if the chamber is filled with oil, the chamber will not expand and the switch contact will not be made.
    Type: Grant
    Filed: January 18, 1985
    Date of Patent: April 15, 1986
    Assignee: The Singer Company
    Inventor: Wilbert E. Beller
  • Multiplexed tracking converter
    Patent number: 4583079
    Abstract: Multiple input channels, containing servo angle data, undergo analog multiplexing by a single non-linear ladder and switch network which generates a steering voltage on a channel-by-channel basis. The steering voltage undergoes demodulation and digitization for feedback to the multiplexed non-linear network thereby emulating a Type II servo loop. The digitized angle information is also made available as tracking converter outputs.
    Type: Grant
    Filed: December 14, 1983
    Date of Patent: April 15, 1986
    Assignee: The Singer Company
    Inventor: David J. Simon
  • Look ahead memory interface
    Patent number: 4583162
    Abstract: A memory access system for a computer is improved by combining look ahead techniques with a partitioned memory. A parallel system operating in reciprocal fashion accesses from one portion while the other portion is generating the next predicted address. The system can also be adapted for use with virtual addressing.
    Type: Grant
    Filed: January 13, 1983
    Date of Patent: April 15, 1986
    Assignee: The Singer Company
    Inventor: Robert S. Prill
  • Fluid pressure operated stack elevating device
    Patent number: 4582463
    Abstract: A fluid pressure operated stacking device with a frusto-conically shaped inflatable bladder accommodated with clearance within a housing into which a stack container with stack embracing sidewall panels is insertable with the stack container panels arranged in the clearance space between the housing and the bladder.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: April 15, 1986
    Assignees: The Singer Company, AVG Productions, Inc.
    Inventor: Martin Schreiner
  • Timing arrangement for a sewing machine
    Patent number: 4582008
    Abstract: In a sewing machine, needle bar and take-up motion is timed to feed dog motion through a constant breadth cam and gear in predetermined angular positions on the arm shaft, a gear on a vertical shaft in mesh with the arm shaft gear according to timing marks on the gears, and a lift cam in a predetermined angular position on the vertical shaft relative to the gear thereon.
    Type: Grant
    Filed: April 16, 1985
    Date of Patent: April 15, 1986
    Assignee: The Singer Company
    Inventors: Walter H. W. Marsh, John Patricia
  • Bevel gear backlash adjusting mechanism
    Patent number: 4580460
    Abstract: A bevel gear backlash adjusting mechanism is disclosed in which a bevel gear is carried by a bearing and is rotatably carried by a stationary shaft so as to be axially shiftable therewith. The stationary shaft includes a supporting portion carried by the frame of a power tool, the supporting portion having a section slotted at an angle to the axis of the shaft. An adjustable slide is also supported by the frame and extends into the angled slotted section of the stationary shaft with an edge thereof formed as a ramp at an angle corresponding to the angle of the slotted section and in engagement therewith. Motion of the adjustable slide normal to the shaft will influence axial motion of the stationary shaft and the bevel gear carried thereon so as to allow an adjustment of the mesh between the bevel gear and its associated bevel gear.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: April 8, 1986
    Assignee: The Singer Company
    Inventors: Bao-Hung Chang, Randy G. Koon
  • Four-step buttonhole mechanism for sewing machines
    Patent number: 4577575
    Abstract: A sewing machine buttonholing mechanism is disclosed wherein feed balance between buttonhole side stitches is attained by positioning of buttonholing cam means rather than by the balance control of the driven cam controlled feed mechanism, and zero feed during bar tacking is independently set and uninfluenced by side stitch equalization.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: March 25, 1986
    Assignee: The Singer Company
    Inventors: Victor G. Stevens, Pao-Ter Huang
  • Robotic work fabric manipulator
    Patent number: 4577792
    Abstract: A robotic end effector adapted to grip a fabric ply at a point remote from a free edge portion of the ply and a fabric edge influencing element resiliently supported from the end effector is provided to minimize distortion of the free edge portion of the fabric ply.
    Type: Grant
    Filed: April 2, 1985
    Date of Patent: March 25, 1986
    Assignees: The Singer Company, AVG Productions, Inc.
    Inventor: John M. Franke, Sr.
  • Self correcting belt tracking mechanism
    Patent number: 4574531
    Abstract: A self correcting belt tracking mechanism is disclosed for a portable belt sander having an idler belt roller arranged with its axis movable into and out of co-planer relation with that of a driven belt roller, and springs acting in opposition to each other to resist such idler roller axis movement.
    Type: Grant
    Filed: April 26, 1985
    Date of Patent: March 11, 1986
    Assignee: The Singer Company
    Inventor: Ronald C. McCurry
  • Modular digital image generator
    Patent number: 4570233
    Abstract: A digital image generator (DIG) that realizes a modular architecture. The DIG employes a geometric processor that processes a plurality of prioritized faces which comprise an image to be displayed. The faces, in turn, comprise a plurality of picture elements (pixels) which are processed according to whether a skip over logic device determines that the pixels are visible and not occulted. Pixels that are in fact visible are processed, in part, by a Bed of Nails (BON) device-spatial filter device combination. This combination provides quantization of a visible pixel at a subpixel resolution level. Pixels that have been so processed are stored in a frame buffer memory for input to a display.
    Type: Grant
    Filed: July 1, 1982
    Date of Patent: February 11, 1986
    Assignee: The Singer Company
    Inventors: Johnson K. Yan, Judit K. Florence
  • Sewing machine or similar article
    Patent number: D283029
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: March 18, 1986
    Assignee: The Singer Company
    Inventor: Thomas W. David
  • Sewing machine or similar article
    Patent number: D283030
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: March 18, 1986
    Assignee: The Singer Company
    Inventor: Thomas W. David