US2579360A - Tool - Google Patents

Description

W. D. BROWN Dec. 18, 1951 TOOL Filed April 12, 1950 Walter D. Brown IN V EN TOR. 40%.

Patented Dec. 18, 1951 UNITED STATES PATENT- OFFICE 2,579,36tl l TOOL Walter D. Brown, Jacksonville, Fla. w Application April 12, 1950, Serial No. 155,413

1 This invention relates to improvements in tools or devices of the type which are adapted to perform special jobs.

An object of this invention is to grind the confronting faces or surfaces of distributor points while they remain in the distributor by means of an abrading member or disk which is carried by a rotatable shank or spindle, the spindle being supported adjustably so that the angle of confrontation of the grinding element and the distributor point faces may be selectively regulated, the support being removably fixed to the distributor rotor shaft, said rotor shaft providing a true reference element for the grinding operations.

Ancillary objects and features will become apparent in following the description of the illustrated form of the invention.

In the drawings:

Figure l is a top view of the device showing its application to a typical distributor, only pertinent portions of the distributor being illustrated;

Figure 2is a sectional view taken substantially on the line 2-2 of Figure 1 and in the direction of the arrows, and;

Figure 3 is a perspective view of the device.

The instant invention provides a tool of the class adapted to face confronting surfaces of distributor points. Heretofore it has been well known in the art to grind these confronting surfaces by means of tools. However, the tools were usually held by hand so that the confronting surfaces of the distributor points would be faced properly only if the user of the device were highly skilled and even after a skillful operation of one of these tools, there was still doubt as to whether the confronting surfaces were absolutely planar or slightly rounded. In this invention I have employed the rotor shaft H] as a means of retaining the support 12, the support in turn carrying the spindle [4. It is of major importance that the support l2 be held firmly and the rotor shaft of a distributor in an ordinary and conventional vehicle engine is a true, substantially perfect element for this purpose.

A distributor case It is illustrated in Figure 1 and has the distributor points l8 and 20 disposed therein and carried by the usual distributor point holder 22.

Said support I2 is substantially L-shaped having a leg 24 and a leg 26. The leg 26 has a slot 28 opening outwardly at one end thereof and the longitudinal axis of the slot, when the support is in the operative position, is in a plane perpendicular to the longitudinal axis of the distributor rotor shaft [0, even though the planes are spaced from each other, as is apparent from Figure 1.

2 Claims. (01. sf-241 There is a fastening assembly 30 at one end of th e,leg 24 which forms a means of removably securing the support to the distributor rotor shaft.

The specific construction of this assembly is the bore 32 formed at said end of the leg 24 which is adapted to encompass the upper end of the rotor shaft I0. A set screw 34 is threadedly carried by the bore 32 and is adapted to engage clampingly the usual flat surface 36 of the upper end of the distributor rotor shaft [0. When the set screw 34 is tightened there can be no rotation of the support I2 with respect to the rotor shaft Ill.

The spindle 14 has an operating knob 40 or a suitable equivalent at one end thereof and an abrading member 42 carried by the other end thereof. This abrading member is preferably a small grinding disk having two spaced, planar surfaces 44 and 46 adapted to engage and face the confronting surfaces of the distributor points l8 and 20 simultaneously. The friction disk or abrading disk 42 may be held on the end of the spindle by any suitable means, as the two nuts 48 and 50 which are threaded on the appropriate end of the spindle and have the abrading member 42 held therebetween.

Means for adjustably securing the spindle l4 on the support I2 is supplied and consists of the bearing '52 which has an opening therein through which the spindle passes, together with a threaded shank 54 rising from one side of the bearing. This shank passes through the slot 28 and has a threaded element 56, as a wing nut, secured thereto which is adapted to press against the upper surface of the support in the region of the slot 28.

In operation, the support I2 is attached to the rotor shaft 10 of the distributor by the clamping or fastening assembly 30. Then, the proper angle of confrontation of the surfaces of the disk 42 with respect to the confronting surfaces of the points l8 and 20 is obtained by loosening the wing nut 56 and sliding the shank 54 in the slot 28 until the longitudinal axis of the spindle I4 is the proper axis for rotation. Then the wing nut 56 is tightened thereby allowing the spindle It to be rotated to cause the necessary facing of both points simultaneously. Inasmuch as the surfaces 44 and 46 are planar and parallel to each other, the two confronting faces of the points I8 and 20 are ground or otherwise faced similarly so that a substantially perfectly plane contact is made between the points during the operation of the distributor.

Having described the invention, what is claimed as new is:

1. A device to face the confronting surfaces of distributor points located adjacent a distributor rotor shaft, said device comprising a support having a, bore adapted to be clamped around the rotor shaft, a locking element for retaining the support on the rotor shaft, said support having a slot therein, a spindle, means mounting said spindle in a plane perpendicular to the axis of the bore for rotation on said support, an abrading member secured to said spindle and having parallel surfaces with cutting elements thereon to abrade the confronting Surfaces of both points at the same time, said means mounting said spindle including a bearing with a shank extending therefrom and disposed in said slot for adjustment therein, and a fastening element carried by said shank holding said shank fixed to said support in a selected position with respect to said slot.

2. The combination of claim 1 wherein said support is substantially L-shaped with said bore in one leg adjacent the free end thereof and said slot extending longitudinally of the other leg, said slot having its longitudinal axis arran ed in a plane perpendicular to the axis of the bore, whereby said spindle may be laterally displaced when said shank is moved in said slot to selected positions to thereby adjust the angle at which said surfaces of the abrading member contacts the confronting surfaces of the distributor points.

7 WALTER D. BROWN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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