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Title: Earth working gardening tool
Claims: Having now described my invention what I claim as new and desire to secure by Letters Patent is: 1. A gardening tool comprising a housing, a substantially rectangular frame, a substantially flat blade defining two major parallel surfaces and said blade being mounted on the frame and constituting a first side of the frame for working the ground while said flat surfaces of said blade are substantially parallel with the ground surface, a shaft defining an axis and forming a second side of said frame opposite to the said first side thereof, bearing means provided in said housing for rotatably receiving said shaft thereby allowing pivotable movement of said frame about said axis, drive means disposed within the housing, transmission means also disposed within the housing and drivingly connecting the drive means to the frame to impart to the frame a continuous pivotal vibratory movement, and handling means connected to the housing for handling the tool. 2. A tool as claimed in claim 1, wherein the frame has a third side which is connected to the transmission means. 3. A tool as claimed in claim 2, wherein the transmission means comprise a transmission having an eccentric, and means defining an oblong aperture in said third side of the frame, the eccentric being engaged in the oblong aperture. 4. A tool claimed in claim 3, wherein the drive means are enframed by said frame and comprise an output shaft having a toothed end portion, an intermediate shaft on which intermediate shaft the eccentric is fixed, and a gear pinion keyed on the intermediate shaft and meshed with the toothed end portion of the output shaft. 5. A tool as claimed in claim 4, comprising a counterweight having a U-shape, the branches of which are pivotably mounted on said shaft, one of the branches of the U-shaped counterweight defining an oblong aperture, an eccentric which is part of the transmission means being engaged and movable in the oblong aperture in the counterweight branch, and the eccentric for the counterweight being provided on the intermediate shaft in a position which is diametrally opposed to the eccentric for the frame. 6. A tool as claimed in claim 1, wherein the blade has edges which are parallel to the axis of said shaft and are sharpened so as to form cutting edges. 7. A tool as claimed in claim 1, comprising a counterweight pivotably mounted in the housing and operatively connected to the transmission means so as to be pivoted in an opposite direction to the frame. 8. A tool as claimed in claim 7, wherein the counterweight has a U shape and has a web portion terminating in two branches which branches are mounted adjacent their ends on said shaft, the web portion of the U-shaped counterweight being parallel to the axis of said shaft. 9. A tool as claimed in claim 8, wherein one of the branches of the U-shaped counterweight defines an oblong aperture and an eccentric which is part of the transmission means is engaged and movable in the oblong aperture in the counterweight branch. 10. A tool as claimed in claim 1, wherein the handling means comprise a tubular body connected to said housing and constituting a conduit and cooling air inlet orifices are formed in the tubular body near to an end of the tubular body remote from the housing, and the drive means are disposed in a compartment which is defined in the housing and communicates with the tubular body and with the remaining space of the housing through fan means which are drivingly connected to said drive means and discharge air into said remaining space, said remaining space communicating with the exterior of said housing. 11. A gardening tool comprising a housing, a blade for working the ground mounted to be vibratable relative to the housing, drive means disposed within the housing, transmission means also disposed within the housing and drivingly connecting the drive means to the blade to impart to the blade a continuous vibratory movement, and handling means connected to the housing for handling the tool wherein the handling means comprise a tubular body connected to said housing and constituting a conduit and cooling air inlet orifices are formed in the tubular body near to an end of the tubular body remote from the housing, and the drive means are disposed in a compartment which is defined in the housing and communicates with the tubular body and with the remaining space of the housing through fan means which are drivingly connected to said drive means and discharge air into said remaining space, said remaining space communicating with the exterior of said housing. Other info: Inventors: Chery, Francois (Colombes, FR) Application Number: 512145 Filing Date: 1974-10-04 Publication_date: 1976-02-03 Assignee: Aciers et Outillage Peugeot (Audincourt, FR) Primary Class(es): 172/40 172/41, 172/102 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Marlo, George J. Assistant Examiner: Attorney: Schellin; Eric P. |
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