Scraper adaptor for rotary buffer
First Claim
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1. A removable tool-bearing adaptor for a powered rotary implement providing rotation of a shaft which forms part of said implement, said adaptor comprising:
- an upper plate;
securing means for securing said upper plate to said implement;
said tool being borne by a lower plate substantially parallel to said upper plate;
cam means, disposed in a central area between said plates, for converting rotation of the shaft of said implement to low amplitude circular vibration of said lower plate;
a plurality of flexible attachment means disposed substantially perpendicularly between said plates, each said attachment comprising;
(a) a rigid, two-ended fastening device;
(b) a two-ended flexible bushing surrounding said device and press-fitted at each end thereof into means defining holes in said plates;
(c) a pair of securing means, each securing means being securable to each end of said fastening device projecting from said bushing; and
(d) a pair of flexible washers, each washer being disposed between said securing means and said plate and being sized to prevent passage of said securing means through said means defining holes;
whereby said plates are fixedly held in spaced relation while allowing low amplitude circular vibration of said lower plate relative to said upper plate.
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Abstract
A removable adaptor for a power-operated rotary implement, comprises a circularly vibrating lower plate. When a blade is attached to this plate, an efficient scraper is provided for removal of adhered materials, such as old under-carpets. Past scrapers relying on longitudinal reciprocal motion have suffered from underpowering and jamming. These problems are avoided by the present invention.
39 Citations
22 Claims
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1. A removable tool-bearing adaptor for a powered rotary implement providing rotation of a shaft which forms part of said implement, said adaptor comprising:
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an upper plate; securing means for securing said upper plate to said implement; said tool being borne by a lower plate substantially parallel to said upper plate; cam means, disposed in a central area between said plates, for converting rotation of the shaft of said implement to low amplitude circular vibration of said lower plate; a plurality of flexible attachment means disposed substantially perpendicularly between said plates, each said attachment comprising; (a) a rigid, two-ended fastening device; (b) a two-ended flexible bushing surrounding said device and press-fitted at each end thereof into means defining holes in said plates; (c) a pair of securing means, each securing means being securable to each end of said fastening device projecting from said bushing; and (d) a pair of flexible washers, each washer being disposed between said securing means and said plate and being sized to prevent passage of said securing means through said means defining holes; whereby said plates are fixedly held in spaced relation while allowing low amplitude circular vibration of said lower plate relative to said upper plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A removable scraper adaptor for a powered rotary implement providing rotation of a shaft which forms part of said implement, said adaptor comprising:
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an upper plate; securing means for securing said upper plate to said implement; a lower plate substantially parallel to said upper plate, said lower plate having a blade on at least an edge thereof; cam means, disposed in a central area between said plates for converting rotation of the shaft of said implement to low amplitude circular vibration of said lower plate;
said cam means comprising;(i) a first spindle attached at its upper end to, and rotatable about its longitudinal axis by, said shaft, said spindle adapted to pass through said upper plate; (ii) a second spindle disposed eccentrically with respect to a lower end of said first spindle, a lower portion of said second spindle being rotatably fitted into a ring of ball bearings surrounded by a flexible cup shaped rubber receptacle fitted into a recess in said lower plate; a plurality of flexible attachment means disposed substantially perpendicularly between said plates, each said attachment means comprising; (a) a rigid, two-ended fastening device; (b) a two-ended flexible rubber bushing surrounding said device and press-fitted at each end thereof into means defining holes in said plates; (c) a pair of securing means, each securing means being securable to each one of said fastening device projecting from said bushing; and (d) a pair of flexible rubber washers, each washer being disposed between said securing means and said plate and being sized to prevent passage of said securing means through said means defining holes; whereby said plates are fixedly held in spaced relation while allowing low amplitude circular vibration of said lower plate relative to said upper plate. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification