Paper shredder
AssigneePaul E. Vigneaux, Jr.
InventorPaul E. Vigneaux, Jr.
Life of this patent
Estimating the term…
Abstract
This invention provides a method and a combination for automatically oiling a paper shredder with oil drops when it is running in the reverse direction, and after a predetermined running time in the forward direction.
Claims15
In a paper shredder having a pair of counter-rotating shafts each mounting a plurality of spaced-apart disc-shaped cutters, drive means coupled to said shafts for reversible driving thereof and manual control means for controlling said driving means to selectively drive said shafts in a forward running direction or in a reverse clearing direction or to stop rotation of said shafts, automatic oiling means comprising:
- timer means for timing a first timer interval corresponding to a predetermined accumulated time interval of forward driving of said shafts and a second time interval corresponding to a predetermined time interval of reverse driving of said shafts;
- oil dispensing means disposed in spaced relation to said shafts and in operable communication with an oil pump and a supply of oil, for selectively oiling said plurality of cutters mounted on said shafts;
- and
- automatic sequence control means in operable connection with said manual control means, said timer means and said oil dispensing means, for causing said drive means to drive said shafts in a reverse direction after said first time interval has elapsed, said reverse driving of said shafts occurring during said second time interval, and for causing said oil pump to supply oil under pressure from said source of oil to said oil dispensing means to oil said cutters only during said reverse driving, and for causing said drive means to stop rotation of said shafts after said second time interval has elapsed.
An automatic reversing and oiling apparatus for use in a paper shredder having a pair of counter-rotating shafts each mounting a plurality of spaced-apart disc-shaped cutters, drive means coupled to said shafts for reversible driving thereof, and manually operable control means for controlling said drive means to selectively drive said shafts in a forward running direction for shredding material admitted between said cutters thereof or in a reverse running direction for clearing shredded material from said cutters thereof or to stop rotation of said shafts, said automatic reversing and oiling apparatus comprising:
- timer means for timing a first time interval of a predetermined accumulated running time of said shafts in said forward running direction thereof, and for timing a second time interval of predetermined running time of said shafts in said reverse running direction thereof;
- oil dispensing means for selectively dispensing oil directly onto the said cutters of each of said shafts of said paper shredder;
- and
- automatic control means operably connectable with said manual control means of said paper shredder, said timer means and said oil dispensing means, for causing said drive means of said paper shredder, upon elapsing of said first time interval, to drive said shafts in said reverse running direction for said second time interval and for causing said oil dispensing means to dispense oil to said cutters only during said second time interval, and, upon elapsing of said second time interval, for causing said drive means to stop rotation of said shafts.
An automatic cutting head lubricating apparatus for a paper shredder having a pair of reversible cutting heads, comprising:
- means for accumulating a first predetermined time interval of running of said cutting heads in a forward paper shredding direction;
- means for automatically stopping the forward running of said cutting heads upon elapsing of said first predetermined time interval;
- means for automatically running said cutting heads in a reverse cleaning direction for a second predetermined time interval upon accumulation of said first predetermined time interval and said automatic stopping of said forward running of said cutting heads;
- and
- means for automatically applying lubricant onto said cutting heads only during said second predetermined time interval for completely wetting said cutting heads with lubricant.
Dependencies are inferred from the claim text.