Abrading – Machine – Rotary tool
Patent
1998-03-26
2000-07-04
Eley, Timothy V.
Abrading
Machine
Rotary tool
451419, B24B 700
Patent
active
060830883
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an adapter which is intended to be fitted to drive means, particularly of a powered grinding tool. By the use of selected ones of different such adapters, with the tool, the sharpening, smoothing, cutting, abrading, honing, etc. of implements, such as drill bits, scissors, knives, chisels, planar blades and the like can be effected.
2. Description of the Prior Art
A prior art grinding tool is described and claimed in our UK Patent No 2263424B, and different forms of adapters for use therewith are described and claimed in our UK Patents Nos 2283444B and 2283929B. With this prior art arrangement, the implement is worked at a grinding wheel of the tool, which is received within the selected adapter when it is fitted to the tool, in use.
SUMMARY OF THE INVENTION
An object of the invention is to provide an implement working adapter in a convenient form.
According to the present invention, there is provided an adapter for releasable engagement with drive means, the adapter comprising a rotatable grinding wheel drivable from the drive means, in use, and defining a location at which part of an implement can be received, in use, to be worked by the grinding wheel.
Preferably two locations are defined, with one location being a slot for receiving a scissors blade and desirably the other location being a slot for receiving a knife blade. Conveniently, the slot for receiving the scissors blade is in an angularly movable member, so that the angle of sharpening of the scissors blade by one grinding wheel associated with the member can be varied by angularly moving the member. Advantageously, the other location defines two different slots for reception of different knife blades respectively, one for domestic knives and the other for finer edges, each type of blade being sharpened, in use, by another grinding wheel associated with the other location. The adapter can also have a further location in the form of a screwdriver slot for sharpening a screwdriver blade by one of the grinding wheels, preferably the one used for sharpening the knife blades.
The invention also relates to a powered grinding tool which incorporates the features of the adapter of the invention as an integral part thereof, rather than being provided by a removable adapter.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a front perspective view of an adapter of the invention, with means for removably fitting it to a powered grinding tool not being shown;
FIG. 2 is an exploded, schematic perspective view of the adapter of FIG. 1;
FIG. 3 is an enlarged, fragmentary front view of part of the adapter;
FIG. 4 is a front view of a knife blade and screwdriver blade sharpening part of the adapter;
FIG. 5 is a scrap section through a rear moulding of the adapter showing how a drive belt of the adapter receives drive, in use, from a driven pulley of the powered grinding tool;
FIG. 6 is a scrap view on arrow A of FIG. 5;
FIG. 7 is a rear view of the adapter showing means for releasably connecting it to the powered grinding tool;
FIG. 8 is a scrap view on arrow B of FIG. 7; and
FIG. 9 is a scrap view of an inside part of a guide of the adapter.
DETAILED DESCRIPTION
FIG. 1 shows an implement working adapter which is intended for use with the powered grinding tool generally of the form described and claimed in our UK Patent Application No 2263424B, but modified to provide power take-off to the adapter. This adapter differs from the prior art referred to in the introduction to this specification, in that it does not use the grinding wheel of the powered grinding tool to work an implement, but merely takes drive therefrom as will hereinafter be described, with particular reference to FIGS. 5 and 6.
As shown in FIGS. 1 and 2, the adapter 10 is formed with a casing 11 made up of a front molding 12 and a rear molding 13. The two halves of the casing formed by the moldings 12 an
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Eley Timothy V.
Michaelson Peter L.
Nguyen Dung Van
Turner Intellectual Property Limited
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