Pavement breaking apparatus
AssigneeHercules Machinery Corporation
InventorsJohn W. Jinnings, Orrin H. Jinnings
Life of this patent
Estimating the term…
Abstract
An apparatus for impacting on a hard surface such as concrete so as to break up the hard surface. This apparatus comprises a frame having a bed and an upstanding rail assembly projecting from the bed, a drive shoe, a hammer means attached to the rail assembly so as to be movable in only one direction and operatively connected to the drive shoe for impacting upon the drive shoe. The drive shoe lies adjacent the surface so that upon impact from the hammer means, the shoe forcefully impacts the surface so as to break up the surface. An adjustment means is used to selectively position the drive shoe relative to the hammer means.
Claims12
An apparatus for impacting on a hard surface such as concrete so as to break up the hard surface comprising:
- a frame having a bed and an upstanding rail assembly projecting from said bed;
- a drive shoe;
- hammer means, attached to said rail assembly so as to be movably in only one direction and operatively connected to the drive shoe, for impacting upon said drive shoe;
- said drive shoe positioned adjacent the surface so that upon being impacted by said hammer means said shoe forcefully impacts the surface so as to breakup the surface;
- and
- an adjustment means for continuously exerting a biasing force on the drive shoe so as to selectively position the drive shoe relative to the hammer means including an adjustable arm assembly wherein said arm assembly includes a resilient belt mounted to said bed, and an adjustable rigid turnbuckle having one end attached to said belt and the other end attached to said drive shoe.
An apparatus for breaking up a hard surface such as a concrete comprising:
- a frame having an elongate bed with opposite front and rear ends, said bed being disposed so as to be generally parallel with the surface, said frame further including a rail assembly mounted to said bed and being disposed generally normally to the surface;
- a set of wheels mounted to said bed adjacent the rear end thereof and the front end of said bed connected to a support so that the bed is spaced above the surface;
- a drive shoe positioned adjacent the surface;
- a hammer means mounted to said rail assembly and operatively connected to said drive shoe, for repetitively impacting against said drive shoe so as to break up the surface;
- and
- adjustment means for selectively positioning the drive shoe relative to the hammer means including a flexible belt mounted to the underneath of said bed and forwardly of said drive shoe;
- and
- a rigid turnbuckle having one end attached to said belt and the other end extending rearwardly towards and connected to said drive shoe, the axial length of said turnbuckle being adjustable.
An apparatus for impacting upon a surface comprising:
- a frame having a bed and an upstanding rail assembly mounted to said bed;
- a hammer assembly mounted to said rail assembly;
- and
- a selected one of a pair of shoes being operably connected to said hammer assembly, each of said shoes including a bottom face facing the surface, one of said shoes having a generally flat bottom face so as to tamp the surface upon impacting, a flexible belt mounted to the underneath of said bed forwardly of said shoes;
- and
- a turnbuckle having one end attached to said belt and the other end extending rearwardly towards and connected to said shoes, the axial length of said turnbuckle being adjustable.
Dependencies are inferred from the claim text.