US3679221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chuck jaw insert and assembly
Assignee: Individual
•
Filing: 1970-06-11
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Granted: 1972-07-25
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Expires: 1990-06-11
Abstract
Abstract A chuck for a turning machine or lathe, is disclosed having three jaws movable radially by a worm and scroll mechanism. The jaws illustrated are in the form of master and top jaws and an insert, formed of relatively soft material, is carried by each top jaw. Each insert is held in place by means disposed along its marginal edge portions. Wedge means are provided by an eccentrically mounted wheel so that a soft jaw insert is held without slack for machining of the surface to engage a work piece. Thus, the soft jaw insert surface is machined, while held in the same position it will be held during use, and prcision machining of soft jaw inserts may be obtained. Also, the use of inserts, selectively in more than one holder carried by a jaw, obtains by the mere cutting of the insert bar stock to desired lengths.
Inventors
- 👤 Alvin J Behrens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:28
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/16; B23B31/16004; B23B31/16008; B23B31/16012; Y; Y10; Y10T; Y10T279/00; Y10T279/19; Y10T279/1986; Y10T279/34; Y10T279/3462; Y10T279/3468
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
167 words
A jaw assembly comprising a jaw having a mounting surface and associated side walls; means for mounting said jaw on a chuck so that said mounting surface is parallel to the axis of the chuck; a jaw insert having its base and side walls abutting, respectively, said mounting surface and said associated side walls of said jaw; and attaching means for detachably securing said jaw insert to said jaw comprising spaced apart set screws threadedly carried by said side walls of said jaw and engaging said jaw insert at a plurality of locations spaced from each other in the direction of the axis of the chuck, and are movable into and out of engagement with the side walls of the jaw insert, said jaw insert having a groove extending longitudinally of said jaw insert and in a direction parallel to the axis of the chuck and said set screws are movable into and out of engagement with the side wall of the jaw insert forming said groove.
Claim 2
Dependent Claim
167 words
A jaw assembly comprising a jaw having a mounting surface and associated side walls; means for mounting said jaw on a chuck so that said mounting surface is parallel to the axis of the chuck; a jaw insert having its base and side walls abutting, respectively, said mounting surface and said associated side walls of said jaw; and attaching means for detachably securing said jaw insert to said jaw comprising spaced apart set screws threadedly carried by said side walls of said jaw and engaging said jaw insert at a plurality of locations spaced from each other in the direction of the axis of the chuck, and are movable into and out of engagement with the side walls of the jaw insert, said jaw insert having a groove extending longitudinally of said jaw insert and in a direction parallel to the axis of the chuck and said set screws are movable into and out of engagement with the side wall of the jaw insert forming said groove.
Claim 3
Dependent Claim
62 words
The combination of claim 1 wherein first and second mounting surfaces with associated side walls are provided, said mounting surfaces are parallel to each other and parallel to the axis of the chuck, and the same insert may be selectively mounted in either the first mounting surface and its associated side walls or the second mounting surface and its associated side walls.
Claim 4
Dependent Claim
69 words
The combination of claim 1 wherein said groove in said jaw insert is formed by two walls intersecting at substantially 90* and said walls intersect the side walls of the jaw insert at substantially 135*; and the set screws are threadedly supported by the side walls of the holder and at an angle of substAntially 45* thereto and alined to engage a wall of said groove at substantially 90*.
Claim 5
Dependent Claim
102 words
A lathe chuck comprising, a chuck base; jaws movably mounted on said base for axial movement toward and away from the work piece to be held in said chuck; a relatively soft, detachable insert carried by each of said jaws; and wedging means carried by each of said chuck jaws and with a surface portion thereof movable into and out of engagement with said chuck base, whereby slack between said base and said jaws may be eliminated and said insert may be cut while held in said jaw and in the absence of slack in the mounting thereof indirectly on said base.
Claim 6
Dependent Claim
102 words
A lathe chuck comprising, a chuck base; jaws movably mounted on said base for axial movement toward and away from the work piece to be held in said chuck; a relatively soft, detachable insert carried by each of said jaws; and wedging means carried by each of said chuck jaws and with a surface portion thereof movable into and out of engagement with said chuck base, whereby slack between said base and said jaws may be eliminated and said insert may be cut while held in said jaw and in the absence of slack in the mounting thereof indirectly on said base.
Claim 7
Dependent Claim
38 words
The combination of claim 4, wherein said wedging means comprises a wheel eccentrically carried by each of said chuck jaws and where the perimeter of said wheel is movable into and out of engagement with the chuck base.
Claim 8
Dependent Claim
16 words
The combination of claim 4, wherein a scroll movably mounts said jaws on said chuck base.
References Cited (Backward Citations)
US3190666A
Cited
US3322434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |