Patent US3686989A successfully refreshed from Google Patents.
US3686989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-return severing device for a moving continuous rod
Assignee: General Cigar Co Inc
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Filing: 1970-11-25
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Granted: 1972-08-29
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Expires: 1990-11-25
Abstract
Abstract In a high-speed machine for making a tobacco rod of the cigar or cigarette type, a quick-return, rotary severing device is mounted on a support plate having a longitudinal ledger guide for the tobacco rod. The support plate is transversely attached to a frame which reciprocates parallel to the tobacco rod passing through the ledger guide. In timed relation to the reciprocation of the frame and attached support plate, the blade of the rotary severing device cuts through the continually moving tobacco rod.
Inventors
- 👤 Hans C Dreher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:02
CPC Classifications
A; A24; A24C; A24C5/00; A24C5/14; A24C5/28; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4734; Y10T83/4757; Y10T83/4763
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
A rotary severing device for cutting a longitudinally moving continuous rod into rod segments which comprises: a. a frame reciprocally movable parallel to the axis of said rod; b. a support plate transversely mounted on said frame; c. a cylindrical ledger guide held by said plate near its free end, said guide being positioned with its bore so that said rod passes therethrough; d. a rotatable shaft supported by said plate with its axis parallel to the axis of said rod; e. a knife blade eccentrically mounted on said rotatable shaft and coacting with said guide to cut said rod when said blade passes transversely therethrough; f. drive transmission means on said plate extending to said rotatable shaft from a parallel drive shaft of a length to permit reciprocation of said frame therealong; and g. means to reciprocate said frame and simultaneously rotate said drive shaft so that said blade cuts one of said rod segments from said rod with each complete reciprocation of said frame.
Claim 2
Dependent Claim
166 words
A rotary severing device for cutting a longitudinally moving continuous rod into rod segments which comprises: a. a frame reciprocally movable parallel to the axis of said rod; b. a support plate transversely mounted on said frame; c. a cylindrical ledger guide held by said plate near its free end, said guide being positioned with its bore so that said rod passes therethrough; d. a rotatable shaft supported by said plate with its axis parallel to the axis of said rod; e. a knife blade eccentrically mounted on said rotatable shaft and coacting with said guide to cut said rod when said blade passes transversely therethrough; f. drive transmission means on said plate extending to said rotatable shaft from a parallel drive shaft of a length to permit reciprocation of said frame therealong; and g. means to reciprocate said frame and simultaneously rotate said drive shaft so that said blade cuts one of said rod segments from said rod with each complete reciprocation of said frame.
Claim 3
Dependent Claim
25 words
The severing device of claim 1 wherein the drive transmission is a timing belt engaging sprockets on the drive shaft and on the rotatable shaft.
Claim 4
Dependent Claim
24 words
The severing device of claim 1 wherein the drive shaft is rotated by a Whitworth drive connected to an end of said drive shaft.
Claim 5
Dependent Claim
25 words
The severing device of claim 1 wherein the cylindrical ledger guide has a transverse slot through which the knife blade passes to cut the rod.
Claim 6
Dependent Claim
19 words
The severing device of claim 1 wherein the knife blade has the form of a segment of a spiral.
Claim 7
Dependent Claim
56 words
The severing device of claim 5 wherein the cylindrical ledger guide has a transverse slot through which the knife blade passes to cut the rod, and the drive shaft is rotated by a Whitworth drive connected to an end of said drive shaft so that said blade passes through said slot at its highest rotational speed.
Claim 8
Dependent Claim
35 words
The severing device of claim 6 wherein the drive shaft is substantially square in cross-section, and the drive transmission means is a timing belt engaging sprockets on said drive shaft and on the rotatable shaft.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |