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US 3,945,751 AGranted
Universal floating tool holder
AssigneeNone recorded
InventorAllan S. Johnson
Life of this patent
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AssigneeNone recorded
InventorAllan S. Johnson
Estimating the term…
A universal floating tool holder adapted for floatingly holding tools and particularly adapted for holding a tap for a tapping tool. The toolholder embodies telescoping bodies with a clutch in between the two bodies. Also between the telescoping bodies there are provided resilient means preferably in the form of O-rings. Provision is made for a limited amount of relative axial movement or displacement between the two bodies sufficient for clutch disengagemeent. The resilient means between the two bodies allows for relative radial or lateral float or displacement of one body relative to the other. The outer telescoping body holds the tool which may be attached in a chuck.
A tool holder adapted to being carried by a machine and to hold a tool, comprising in combination a first body having means for attachment to a machine;
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
No related US applications are recorded in the indexed filing history.
Chucks: holding tools yieldably
Cutting by use of rotating axially moving tool: resilient tool or tool-support
Socket type: self-centering of floating
Means to drive tool: universal or flexible drive connection to rotate Tool
Term ended 23 Mar 1993 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The field of the invention is that of tool holders, the invention being particularly adapted as a tap holder. A preferred exemplary form of the invention is described in detail herein adapted as a tap holder for use in tapping operations. The tap holder is driven by a typical type of machine which provides rotary drive combined with axial advance of the tool holder. The exemplary form of the invention is shown herein as a type embodying a releasable clutch.
2. Description of the Prior Art
Further objects and advantages of the invention will become apparent from the following detailed description and annexed drawings wherein:
FIG. 1 is partial schematic view of a machine carrying the tool holder and tap engaged in the tool holder;
FIG. 2 is a cross-sectional view of the tool holder of FIG. 1;
Referring to FIG. 1 of the drawings numeral 10 designates part of a machine adapted for driving a tapping tool. It has an extending stem 12 from which extends a spindle 14 which imparts rotary drive to the tap. The tap holder of the invention is designated generally at 16, the tap itself being designated at 18.
FIGS. 2 and 5 show the tap holder in cross-section. The tap holder comprises a first cylindrical body 22 and a second cylindrical body 24. The first body 22 has a threaded bore 30 adapted to have the end of the spindle 14 threaded into it. It has an extending neck part 31 in which is an annular groove 32.
Near the lower end of the body 22 it has an annular groove 34 and an extending flange 36 which will be referred to again presently. Its lower part as designated at 40 is of smaller diameter and it carries projections forming one part of a releasable clutch. Extending from the part 40 are the lug members 42a, 42b, 42c and 42d. See FIG. 4. As may be seen, the lug members have tapering sides and their inner and outer surfaces are arcuate. The spaces between adjacent lug members form radial slots. The clutch mechanism will be referred to more in detail presently.