US3736819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parting-off box for automatic screw machines
Assignee: Individual
•
Filing: 1971-05-12
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Granted: 1973-06-05
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Expires: 1991-05-12
Abstract
Abstract The invention is particularly directed toward providing a device which can be used with a single-spindle, turret type, automatic screw machine to support the free end of the rotating article while the parting-off cut is being made. The device supports and rotates the article at the same speed as the machine for the entire parting-off cut so that the article will not separate from the rod when the cut is nearly completed.
Inventors
- 👤 J Gibbon
- 👤 S Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:10
CPC Classifications
B; B23; B23B; B23B7/00; B23B7/02; B23B7/04; B23Q; B23Q7/00; B23Q7/04; B23Q7/047; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2514; Y10T82/2521; Y10T82/2593
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
196 words
A device for use with a single-spindle turret-type, automatic screw machine, said device including means to support and rotate at the same speed as the machine and during the entire partingoff cut a finished article formed on the end of bar-stock projecting from the bar-stock holding member of the machine, said means comprising a support frame to be supported by the turret of the machine for movement towards and away from said bar-stock holding member and having a through-opening for free passage of bar-stock projecting from said member and a free space merging with said opening to provide an unobstructed working area for cutting off from said bar-stock, a finished article on the projecting end of said bar-stock, a collet located and supported by said support frame and adapted frictionally to engage said finished article on movement of said frame towards said bar-stock holding member, and frictional drive means carried by said frame to be engaged with said bar-stock holding member on movement of the frame theretowards, and gear means between said frictional drive means and said collet to rotate the latter at the same speed as said bar-stock when said frictional drive means is operative.
Claim 2
Independent Claim
196 words
A device for use with a single-spindle turret-type, automatic screw machine, said device including means to support and rotate at the same speed as the machine and during the entire partingoff cut a finished article formed on the end of bar-stock projecting from the bar-stock holding member of the machine, said means comprising a support frame to be supported by the turret of the machine for movement towards and away from said bar-stock holding member and having a through-opening for free passage of bar-stock projecting from said member and a free space merging with said opening to provide an unobstructed working area for cutting off from said bar-stock, a finished article on the projecting end of said bar-stock, a collet located and supported by said support frame and adapted frictionally to engage said finished article on movement of said frame towards said bar-stock holding member, and frictional drive means carried by said frame to be engaged with said bar-stock holding member on movement of the frame theretowards, and gear means between said frictional drive means and said collet to rotate the latter at the same speed as said bar-stock when said frictional drive means is operative.
Claim 3
Dependent Claim
73 words
A device as set Forth in claim 1, wherein a centering member is connected to said support frame and is engageable with the turret of the machine, a collar is attached to said centering member, said gear means includes a gear integral with a tubular support receivable in said collar, said collet is slidable into said tubular support, and means is provided to prevent relative rotation between said collet and said tubular support.
Claim 4
Independent Claim
198 words
A device for use with a single-spindle, turret-type, automatic screw machine to enable clean separation of a finished article on the end of bar-stock projecting from the rotating bar-stock holding member of the machine, said device comprising first and second mutually-spaced upright support members interconnected by a bottom member to form a U-shaped frame providing an unobstructed working area between said support members, frictional drive means carried by said first support member to confront said bar-stock holding member when said U-shaped frame is operatively positioned, said first support member having therein an opening for through extension of the projecting end of the bar-stock, said second support member being adapted to be supported by the turret of the machine, a collet located and held by said second support member and adapted frictionally to engage the finished article when said turret is moved toward the bar-stock holding member of the machine to force said frictional drive means into frictional engagement with said bar-stock holding member, and a gear train between said frictional drive means and said collet to rotate said collet at the same speed as said bar-stock when a parting-off cut is being made in said unobstructed working area.
Claim 5
Independent Claim
198 words
A device for use with a single-spindle, turret-type, automatic screw machine to enable clean separation of a finished article on the end of bar-stock projecting from the rotating bar-stock holding member of the machine, said device comprising first and second mutually-spaced upright support members interconnected by a bottom member to form a U-shaped frame providing an unobstructed working area between said support members, frictional drive means carried by said first support member to confront said bar-stock holding member when said U-shaped frame is operatively positioned, said first support member having therein an opening for through extension of the projecting end of the bar-stock, said second support member being adapted to be supported by the turret of the machine, a collet located and held by said second support member and adapted frictionally to engage the finished article when said turret is moved toward the bar-stock holding member of the machine to force said frictional drive means into frictional engagement with said bar-stock holding member, and a gear train between said frictional drive means and said collet to rotate said collet at the same speed as said bar-stock when a parting-off cut is being made in said unobstructed working area.
Claim 6
Dependent Claim
136 words
A device as set forth in claim 3, including a first sleeve integral with said second support member on the side of the latter remote from said working area, a centering member engageable with the turret of the machine and including a second sleeve within which said first sleeve is receivable and lockable, a collar attached to said centering member, a tubular member integral with a gear of said gear train and receivable within said collar, the bore of said tubular member being conically flared, bearing means permitting rotation of said tubular member relative to said collar, said collet being slidable within said tubular member and being lockable relative thereto, said second support member having therein a central tapped aperture, and a locking collar adapted to be screwed into said aperture to bear against said collet.
References Cited (Backward Citations)
US3176553A
Cited
US3541903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |