Patents Assigned to Mason & Porter Limited
  • Patent number: 4189008
    Abstract: An agricultural machine which comprises a frame carrying a mounting for agricultural implements such as a plow together with a handle for steering and controlling the machine with at least one axle on the frame. Wheels are provided on the axle whereby the frame may be run over the ground and a last part of a kinematic chain is arranged to drive the wheels. Also provided are rotary hoe propelling mechanism including an engine, a clutch and a gearbox which drive a shaft, the clutch gearbox and the shaft form a first part of the kinematic chain and a mounting for the rotary hoe propelling mechanism is arranged so that a second part of the kinematic chain is driven by the first part and will engage with the last part of the kinematic chain so that the engine drives the wheels.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: February 19, 1980
    Assignee: Mason & Porter, Limited
    Inventor: Frederick C. Porter
  • Patent number: 3972160
    Abstract: A rotary-blade type mower having a blade which is power-driven and mounted in a housing, the housing having an open-bottomed rearwardly-opening grass-discharge chute; rear wheels on the housing being pivotally fixed to opposite sides of the mower by rear wheel mounting and an interconnecting rod extending between the rear wheel mountings and having an intermediate bend along its length so that part of the interconnecting rod passes above the rearwardly-opening grass-discharge chute and another part of the rod being disposed at a lower level; a control handle engaged with the rod so that by operating control handle the rod is moved to cause the wheel mounting members to rotate about their pivotal mountings and vary the height of the housing and the blade rotating therein.
    Type: Grant
    Filed: April 1, 1975
    Date of Patent: August 3, 1976
    Assignee: Mason & Porter Limited
    Inventor: Gordon Henry Boswell
  • Patent number: D266943
    Type: Grant
    Filed: February 7, 1979
    Date of Patent: November 16, 1982
    Assignee: Mason & Porter Limited
    Inventor: Terence F. Porter
  • Patent number: D267423
    Type: Grant
    Filed: February 7, 1979
    Date of Patent: December 28, 1982
    Assignee: Mason & Porter Limited
    Inventor: Terence F. Porter
  • Patent number: D270937
    Type: Grant
    Filed: January 2, 1981
    Date of Patent: October 11, 1983
    Assignee: Mason & Porter Limited
    Inventors: Terence F. Porter, Philip R. Allen
  • Patent number: D273957
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: May 22, 1984
    Assignee: Mason & Porter Limited
    Inventor: Gordon H. Boswell
  • Patent number: D274250
    Type: Grant
    Filed: July 24, 1980
    Date of Patent: June 12, 1984
    Assignee: Mason & Porter Limited
    Inventors: Philip R. Allen, Terence F. Porter
  • Patent number: D274432
    Type: Grant
    Filed: July 24, 1980
    Date of Patent: June 26, 1984
    Assignee: Mason & Porter Limited
    Inventors: Philip R. Allen, Terence F. Porter
  • Patent number: D275395
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: September 4, 1984
    Assignee: Mason & Porter Limited
    Inventor: Gordon H. Boswell