Patents by Inventor Walter Scheffel

Walter Scheffel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4655262
    Abstract: Reeds for an air jet loom. Each reed has a weft insertion channel. The reed teeth are formed in such a way that they have a first region for the guide channel and a straight section for seating-up of the weft thread. The profiling of the teeth allows secondary air streams towards the base of the weft insertion channels. This improves the stability of the thread by keeping the weft closer to the base of the channel.
    Type: Grant
    Filed: December 6, 1985
    Date of Patent: April 7, 1987
    Assignee: Walter Scheffel
    Inventors: Walter Scheffel, Bernd W. Scheffel
  • Patent number: 4371007
    Abstract: In an apparatus for the fluid insertion of the weft in a loom which comprises a swingable sley extending across the loom and carrying a reed for the battening of a weft inserted into a warp shed formed by warp threads extending through the reed transversely to the sley and wherein the sley is formed with a weft channel extending across the loom and swingable into a warp shed formed by separating lower warp threads from upper warp threads, the channel being provided with a plurality of nozzles at spaced locations across the loom and oriented to carry a weft pick through the channel in the shed, the channel being formed by a plurality of yarn guides extending between the warp yarns and the channel having a generally V-shaped cross section opening towards the reed with upper flanks delimiting the upper side, rear flanks delimiting the rear and lower flanks delimiting the lower side of said channel, the improvement wherein the upper and rear flanks of the cross section of the channel are formed by first yarn guid
    Type: Grant
    Filed: February 12, 1980
    Date of Patent: February 1, 1983
    Inventor: Walter Scheffel
  • Patent number: 4357963
    Abstract: In the loom, a thread guide channel is formed by upper plates and lower plates located in different cross-sectional planes of the channel. The lower plates are fixed to a sley, while the upper plates have their own guidance system formed in such a way that in each movement phase, points of the upper plates located furthest from the sley pivot point describe predetermined path lines which intersect the path lines of points on the lower plates furthest from the sley pivot point, so that during weft fastening the path line of upper the plates are at a smaller distance from the sley pivot point than in the weft insertion position of the sley. The upper plates are mounted on a pivot point on the sley and are pivotally connected by means of a connecting rod to another pivot point mounted extraneously of the sley.Despite the smaller sley travel, an adequate spacing of the plates of the thread guide channel from the weft fastening during insertion into the shed is achieved.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: November 9, 1982
    Inventor: Walter Scheffel
  • Patent number: 4328842
    Abstract: An apparatus for picking a weft through the shed of a loom in which separator elements interposed between the warp threads are provided with a recess defining a passageway along which the weft thread is conveyed during the picking operation. The picking is accomplished by fluid jets, preferably in the form of compressed air, which are directed angularly toward the passageway in the picking direction.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: May 11, 1982
    Inventor: Walter Scheffel
  • Patent number: 4183382
    Abstract: An apparatus for picking a weft through the shed of a loom in which separator elements interposed between the warp threads are provided with a recess defining a passageway along which the weft thread is conveyed during the picking operation. The picking is accomplished by fluid jets, preferably in the form of compressed air, which are directed angularly toward the passageway in the picking direction.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: January 15, 1980
    Inventor: Walter Scheffel
  • Patent number: 4043361
    Abstract: A weft transport apparatus for weaving machine operative to insert said weft by means of a fluid and comprising at least two co-axial mounted drums one of the drums is rotatably driven and the other said drums is stationarily mounted and co-operating guide means being operative to move the weft between the drums.
    Type: Grant
    Filed: June 21, 1976
    Date of Patent: August 23, 1977
    Inventor: Walter Scheffel
  • Patent number: 3938561
    Abstract: A loom provided with a supply bobbin from which a weft thread can be drawn in which between the supply bobbin and a fluid pressure means for inserting the weft thread in a shed, there is located means for forming a loop of variable size for storage purposes. The loop-forming means is provided with a guide track which extends substantially transversely of a theoretical rectilinear weft thread track between the supply bobbin and the weft thread inserting means, and a guide member operably related to the guide track and being movable to and fro on the guide track and transversely of the theoretical rectilinear track away from the rectilinear track for guiding the weft thread and movable back again, with the guide track being arranged so that the return movement of the guide member is also transversely of the theoretical rectilinear track so that the weft thread is guided during the return movement from the guide member.
    Type: Grant
    Filed: August 31, 1973
    Date of Patent: February 17, 1976
    Inventor: Walter Scheffel