Patents Assigned to Sigloch and Schrieder
  • Patent number: 4123191
    Abstract: A multi-spindle drill head for use with a machine drive, comprises a main assembly, comprising a first housing member having at least one main spindle which is rotatably supported therein and which is adapted to be connected to the machine drive. A main gear is affixed to the main spindle for rotation therewith and it drives one or more secondary gears on secondary spindles. Each secondary spindle contains a drive pinion which becomes oriented in meshing engagement with a connecting gear which is rotatably mounted on a second housing part which is adapted to be fastened to the first housing part. The connecting gear is rotatably mounted in a position to drive a pinion of a drill spindle. The main spindle itself may contain a lower portion with a drive pinion which may be engaged with a connecting gear to drive the pinion of the drill spindle.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: October 31, 1978
    Assignee: Sigloch and Schrieder
    Inventor: Erwin Braun