US2751949A - Knief advancing and latching means for a tobacco cutting machine - Google Patents
Knief advancing and latching means for a tobacco cutting machine Download PDFInfo
- Publication number
- US2751949A US2751949A US358926A US35892653A US2751949A US 2751949 A US2751949 A US 2751949A US 358926 A US358926 A US 358926A US 35892653 A US35892653 A US 35892653A US 2751949 A US2751949 A US 2751949A
- Authority
- US
- United States
- Prior art keywords
- advancing
- knives
- feed
- cutting machine
- knief
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B7/00—Cutting tobacco
- A24B7/04—Cutting tobacco by machines with revolving knives
- A24B7/08—Cutting tobacco by machines with revolving knives with several knives which act one after the other
- A24B7/12—Cutting tobacco by machines with revolving knives with several knives which act one after the other with cutter axes transverse to the feeding direction
Definitions
- the invention relates to improvements in tobacco cutting machines and is particularly concerned with a device for transmitting movement to the rotary cutter head of a rotary tobacco cutter.
- the drive of the knife head is effected continuously while the feed of the knives on the knife head is effected intermittently.
- the feed of the latter is effected in the known machines by devices in which for example the knives are fed forward during the rotation of the knife head by means of a cam drive through a ratchet and worm drive.
- the device is such that the automatic feed of each single knife can be disconnected by means of a special coupling in order that the feed of the knives can be effected for example more rapidly with suitable devices.
- the knife head is continuously driven in the usual manner for example by means of a motor.
- the knife feed is however eifected no longer intermittently but likewise continuously, whereby the movement is transmitted to the knives from the same driving shaft of the knife head by means of a hollow shaft.
- the hollow shaft is provided externally with a worm gear which engages a worm and operates through further reduction gears.
- the pitch of the wheels is such that only a definite small movement or feed is obtained.
- Fig. 1 is a section on the line CD of Fig. 2 through the knife head wherein for the sake of clearness the end plate of the knife roller is omitted.
- Fig. 2 is a section on the line AB of Fig. 1, and
- Fig. 3 shows the adjusting device of the hollow shaft in the disconnected condition.
- the driving shaft 1 is driven from a motor 6 through a chain wheel 2 by a chain 3 and a spur wheel drive 4, 5.
- the knife head 7 of a tobacco cutter is rigidly connected to the drive shaft 1.
- the drive shaft 1 with the knife head 7 is rotatably mounted in end bearings 1a, 1b (see Fig. 2).
- a hollow shaft 8 is disposed about the shaft 1 on one side of the knife head and said shaft 8 is provided externally for example with a worm ring 8.
- a worm Wheel 9 engages this worm ring which worm wheel is mounted on the shaft 10.
- the shaft 10 rotates in bearings 10" which are rigidly mounted on the side wall 7 of the knife head.
- Worms 11 are secured to the other ends of the shafts 10 which transmit their movement in each case to a worm wheel 12 mounted on the shafts 11'.
- Worms 13 are also mounted on the said shafts 11' which each cooperate with a worm Wheel 14 mounted on the corresponding spindles 15.
- the spindles 15 incorporate threads each engaging a half nut 16 of known construction which in turn engage between the knife 17 concerned and transmit the movement thereto.
- the worm ring 8' mounted on the hollow shaft 8 is held by a clamping device which comprises a housing secured to the machine frame in which a pin 18 is carried which is pressed in known manner by a spring 19 continuously towards a notch 20 in the hollow shaft 8.
- the pin 18 has a projection 18a at its inner end which is flattened at two sides (18d). If the knife head 7 rotates after engagement of the pin 18 in the hollow shaft 8, the worm wheel 9 rolls about the stationary worm ring 8, is driven thereby and transmits its rotation through the machine elements 11, 12, 13, 14 and 15 to the knives 17 so that these are continuously fed forward.
- a frame structure In a tobacco cutter, a frame structure, a rotary cutter head mounted in the frame structure, a plurality of knives adjustably mounted on said cutter head with their cutting edges adjacent the periphery thereof, individual feed screws operatively connected with each of said knives for advancing the same outwardly, a gear member connected to the feed screw, a gear element loosely mounted on the cutter head and arranged about the axis thereof, gearing drivingly connecting said gear element to said gear members, and a spring loaded detent carried by the frame structure adapted to engage the gear element and hold the same against rotation to cause said gearing to drive said feed screws.
Landscapes
- Manufacture Of Tobacco Products (AREA)
Description
June 25, 1%6' A. RITSCHER 2,753,949
KNIFE ADVANCING AND LATCHING MEANS FOR A TOBACCO CUTTING MACHINE Filed June 1, 1953 INVENTOR:
%% BY ,awf m United States Patent KNIFE ADVANCING AND LATCHING MEANS FOR A T OBACCO CUTTING MACHINE Arthur Ritscher, Hamburg-Bergedorf, Germany, assignor to Kurt Korber & Cu. K. G., Hamburg-Bergedorf, Germany Application June 1, 1953, Serial No. 358,926
Claims priority, application Germany June 16, 1952 1 Claim. (Cl. 146-117) The invention relates to improvements in tobacco cutting machines and is particularly concerned with a device for transmitting movement to the rotary cutter head of a rotary tobacco cutter. In known cutting machines the drive of the knife head is effected continuously while the feed of the knives on the knife head is effected intermittently. The feed of the latter is effected in the known machines by devices in which for example the knives are fed forward during the rotation of the knife head by means of a cam drive through a ratchet and worm drive. In this case the device is such that the automatic feed of each single knife can be disconnected by means of a special coupling in order that the feed of the knives can be effected for example more rapidly with suitable devices.
The use of a cam drive for the intermittent feed of the knives and further the individual couplings, the number of which depends on the number of knives present, for disconnecting the knives, are expensive and a constant source of faults. This disadvantage is avoided according to the invention which consequently provides improvements.
In the arrangement according to the invention the knife head is continuously driven in the usual manner for example by means of a motor. The knife feed is however eifected no longer intermittently but likewise continuously, whereby the movement is transmitted to the knives from the same driving shaft of the knife head by means of a hollow shaft. The hollow shaft is provided externally with a worm gear which engages a worm and operates through further reduction gears. The pitch of the wheels is such that only a definite small movement or feed is obtained.
Even with the continuous feed of the knives according to the feature of the invention it is advantageous to interrupt the feed for certain periods. This however is effected in such manner that only one coupling is provided for all the knives. Thus while for example the knife head operates continuously, the knife feed can be stopped. Thereby for example the knives can be ground during a certain period.
The features of the invention are shown as a constructional example in three figures on the accompanying drawings wherein:
Fig. 1 is a section on the line CD of Fig. 2 through the knife head wherein for the sake of clearness the end plate of the knife roller is omitted.
Fig. 2 is a section on the line AB of Fig. 1, and
Fig. 3 shows the adjusting device of the hollow shaft in the disconnected condition.
ice
The driving shaft 1 is driven from a motor 6 through a chain wheel 2 by a chain 3 and a spur wheel drive 4, 5. The knife head 7 of a tobacco cutter is rigidly connected to the drive shaft 1. The drive shaft 1 with the knife head 7 is rotatably mounted in end bearings 1a, 1b (see Fig. 2). A hollow shaft 8 is disposed about the shaft 1 on one side of the knife head and said shaft 8 is provided externally for example with a worm ring 8. A worm Wheel 9 engages this worm ring which worm wheel is mounted on the shaft 10.
The shaft 10 rotates in bearings 10" which are rigidly mounted on the side wall 7 of the knife head. Worms 11 are secured to the other ends of the shafts 10 which transmit their movement in each case to a worm wheel 12 mounted on the shafts 11'. Worms 13 are also mounted on the said shafts 11' which each cooperate with a worm Wheel 14 mounted on the corresponding spindles 15. The spindles 15 incorporate threads each engaging a half nut 16 of known construction which in turn engage between the knife 17 concerned and transmit the movement thereto.
The worm ring 8' mounted on the hollow shaft 8 is held by a clamping device which comprises a housing secured to the machine frame in which a pin 18 is carried which is pressed in known manner by a spring 19 continuously towards a notch 20 in the hollow shaft 8. The pin 18 has a projection 18a at its inner end which is flattened at two sides (18d). If the knife head 7 rotates after engagement of the pin 18 in the hollow shaft 8, the worm wheel 9 rolls about the stationary worm ring 8, is driven thereby and transmits its rotation through the machine elements 11, 12, 13, 14 and 15 to the knives 17 so that these are continuously fed forward.
If however the pin 18 is withdrawn so that the projection 18a disengages the notch 20 of the hollow shaft 8- for this purpose the pin 18 is rotated through -the hollow shaft is released from the worm ring 8 and rotates with the shaft 1 together with the gear wheels 9 which do not now rotate about their own axes. Thereby the worm wheels 9 always remain in the same contact position without rotating. The feed of the knives 17 is therefore stopped.
What I claim is:
In a tobacco cutter, a frame structure, a rotary cutter head mounted in the frame structure, a plurality of knives adjustably mounted on said cutter head with their cutting edges adjacent the periphery thereof, individual feed screws operatively connected with each of said knives for advancing the same outwardly, a gear member connected to the feed screw, a gear element loosely mounted on the cutter head and arranged about the axis thereof, gearing drivingly connecting said gear element to said gear members, and a spring loaded detent carried by the frame structure adapted to engage the gear element and hold the same against rotation to cause said gearing to drive said feed screws.
Dearsley Mar. 27, 1951 Schreiber Oct. 21, 1952
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2751949X | 1952-06-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2751949A true US2751949A (en) | 1956-06-26 |
Family
ID=7997688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US358926A Expired - Lifetime US2751949A (en) | 1952-06-16 | 1953-06-01 | Knief advancing and latching means for a tobacco cutting machine |
Country Status (1)
Country | Link |
---|---|
US (1) | US2751949A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3117602A (en) * | 1962-07-16 | 1964-01-14 | American Mach & Foundry | Tobacco cutter |
US3354921A (en) * | 1964-06-19 | 1967-11-28 | Hauni Werke Koerber & Co Kg | Apparatus for cutting tobacco |
EP0156700A2 (en) * | 1984-03-21 | 1985-10-02 | Japan Tobacco Inc. | Knife feed system in rotary drum cutter |
US20060097094A1 (en) * | 2002-12-12 | 2006-05-11 | International Tobacco Machinery Poland Ltd. | Cutting machine for organic plant materials, especially for tobacco |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2546727A (en) * | 1946-08-07 | 1951-03-27 | Molins Machine Co Ltd | Tobacco cutting machine |
US2614596A (en) * | 1949-04-05 | 1952-10-21 | Robert Legg Ltd | Machine for cutting tobacco and the like |
-
1953
- 1953-06-01 US US358926A patent/US2751949A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2546727A (en) * | 1946-08-07 | 1951-03-27 | Molins Machine Co Ltd | Tobacco cutting machine |
US2614596A (en) * | 1949-04-05 | 1952-10-21 | Robert Legg Ltd | Machine for cutting tobacco and the like |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3117602A (en) * | 1962-07-16 | 1964-01-14 | American Mach & Foundry | Tobacco cutter |
US3354921A (en) * | 1964-06-19 | 1967-11-28 | Hauni Werke Koerber & Co Kg | Apparatus for cutting tobacco |
EP0156700A2 (en) * | 1984-03-21 | 1985-10-02 | Japan Tobacco Inc. | Knife feed system in rotary drum cutter |
EP0156700A3 (en) * | 1984-03-21 | 1986-11-12 | Japan Tobacco Inc. | Knife feed system in rotary drum cutter |
US20060097094A1 (en) * | 2002-12-12 | 2006-05-11 | International Tobacco Machinery Poland Ltd. | Cutting machine for organic plant materials, especially for tobacco |
US7364104B2 (en) * | 2002-12-12 | 2008-04-29 | International Tobacco Machinery Poland Ltd. | Cutting machine for organic plant materials, especially for tobacco |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1440926A (en) | Device for cutting continuous webs | |
US2751949A (en) | Knief advancing and latching means for a tobacco cutting machine | |
US2030028A (en) | Shaft adjusting means | |
US2030027A (en) | Shaft adjusting means | |
GB1471258A (en) | Ledgers for the cutting device of cigarettes and like rod- making machines | |
GB1321761A (en) | Web feeding apparatus | |
GB1314825A (en) | Cigarette making machines | |
US3726047A (en) | Motor driven knife grinder for forage harvester cutters | |
US2501288A (en) | Apparatus for making helical shaped candies | |
US2585829A (en) | Conveyer mechanism for confectionery machines | |
GB935141A (en) | Improvements in or relating to machines for the manufacture of cigars | |
US2273602A (en) | Motion transmitting mechanism | |
US1732550A (en) | Change-speed gear for cotton cleaners | |
US1549222A (en) | Method of and apparatus for regulating the cutting places of severing mechanism with cigarette-rod machines | |
GB945841A (en) | Improvements in knife feeding arrangements for sickle-shaped knives in cigarette machine cut-offs | |
US2011913A (en) | Automatic cut-off knife adjuster | |
US1548007A (en) | Clutch | |
GB484333A (en) | Improvements in or relating to cutting machines having a rotary knife carrier | |
SU518291A1 (en) | Device for moving cutters of a multi-cut gas-cutting machine | |
US1926932A (en) | Cutting machine | |
GB982298A (en) | Improvements in cigarette-rod cutting devices | |
GB699377A (en) | A knife head in a cigarette making machine of the continuous rod type | |
US1313024A (en) | Wire straightening and cutting-off machine | |
GB950090A (en) | Improvements in knife-feeding arrangements for sickle-shaped knives in cut-offs of cigarette-making machines | |
GB885434A (en) | Improvements in machines for sharpening rotary cutters |