The Foxboro Company

Deere + Company

Hoel L Bowditch

Everett O Olsen

James R La Croix

James R LaCroix

.A mechanism and a method for converting a fixed wheeled walk-behind mower into a caster wheel walk-behind mower and vice versa comprising two caster wheel assemblies having wheels mounted in brackets journalled for rotation in frames. Each frame has means for attaching the mechanism to the front wheel axle. Each caster wheel assembly comprises an elongated member connected to each frame and extending the length of the mower on e.ach side between the frame and the respective rear wheel axle or mower housing. At the end of the elongated member most remote from its connection to each of the frames, a U-shaped notch is formed therein for connection with the housing. A tie rod is provided for interconnecting the two frames, for adding rigidity to the assembly and for maintaining the correct, constant distance between the frames. The mechanism can be rapidly converted between castering and a conventional walk-behind mower with fixed direction wheels with the only modification being the forming of a groove in the rear axle proximate each rear wheel.

Mechanism and method for converting a fixed wheel walk-behind mower to a

The method of making a force-responsive instrument of the type including a tensioned wire of round cross-section to be vibrated perpendicular to the wire axis, wherein said instrument includes field-producing magnetic means operable with said wire to induce vibration; said method including the steps of:

Pressure measuring apparatus using vibratable wire

A differential-pressure measuring instrument comprising a main body assembly with a pair of diaphragms each subject to a respective fluid pressure. The diaphragms enclose a sealed chamber containing a fill-liquid surrounding a non-magnetic vibratable wire which is tensioned in accordance with the applied differential pressure. A magnetic field passes transversely through the wire, and electrical current is supplied to the wire by electronic circuit means to produce a vibratory force on the wire as a result of interaction between the electrical current and the magnetic field.

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Foxboro, MA, United States of America

Hoel L Bowditch