US2186884A - Web cutting mechanism - Google Patents
Web cutting mechanism Download PDFInfo
- Publication number
- US2186884A US2186884A US215255A US21525538A US2186884A US 2186884 A US2186884 A US 2186884A US 215255 A US215255 A US 215255A US 21525538 A US21525538 A US 21525538A US 2186884 A US2186884 A US 2186884A
- Authority
- US
- United States
- Prior art keywords
- knife
- web
- cam
- arms
- cutting mechanism
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
- B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
- B26D1/385—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/465—Cutting motion of tool has component in direction of moving work
- Y10T83/4766—Orbital motion of cutting blade
- Y10T83/4795—Rotary tool
- Y10T83/4847—With cooperating stationary tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8776—Constantly urged tool or tool support [e.g., spring biased]
- Y10T83/8785—Through return [noncutting] stroke
- Y10T83/8786—Oscillating tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8798—With simple oscillating motion only
- Y10T83/8804—Tool driver movable relative to tool support
- Y10T83/8805—Cam or eccentric revolving about fixed axis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8798—With simple oscillating motion only
- Y10T83/8817—Axially entending cutting edge
Definitions
- My invention consists in new and useful im-4 provements in a web cutting mechanism for use in continuous feed, power-operated machines, and is primarily directed kto a patch cutting device for severing from a web of transparent material, 'strips for application to' window-type envelopes. It is the object of my invention to provide a. stripl cutting mechanism of this type wherein a continuously fed web may be severed at intervals Without interrupting or obstructing the continuous feed of the web. j
- Another object of thepresent invention resides in the structure and operation of the knife Wherebythe latter, after severing a patch or strip, is automatically tilted in the direction of travel of advancing edge of the web, after which said knife is slowly returned to normal position.
- a further object of my invention is to provide a cutting knife and operating cam arrangement whereby the knife is subjected to a minimum of shock and strain, thus prolonging the life and utility of the knife.
- a still further object of my invention isto pro- Vide a web cutting mechanism including a horizontal stationary knife and a perpendicular mo-vable knife lmounted on arms adapted to swing in anarc, said movable knife lbeing provided with a secondary fulcrum and means co-acting therewith ,to compensate for the arcuate movement of said supporting arms, whereby the shearing action is maintained substantially perpendicular.
- Fig. 1 is a perspective view of my improved strip cutting mechanism, showing the knife and cams in non-cutting positions.
- Fig. 2 is a transverse section of the same, showing a continuous web being fed through the mechanism, with the parts in the positions shown in Fig. 1.
- Fig. 3 is a similar view showing the parts in cutting position
- Fig. 4 is a fragmentary view similar to those just referred to but showing the knife in tilted position which immediately follows the cutting position.
- I represents a base o-r block in lthe Webso as to prevent the curling up of the ⁇ 2 claims. (c1. 164-43) which is preferably inset a horizontal stationary knife 2 of any' suitablev metal.
- a reciprocating vknife 3 perpendicular to said stationary knife and adapted to cooperate therewith, is secured to a knife bar 4 by means of screws 5 or other suitable means, with its yfree cutting edge normally in line forshearing engagement with the 'cutting edge of the stationary' knife 2.
- the knife bar 4 is rotatable andfor this purpose may be mounted ,ony an axle or shaft ty which projects therefrom at both ends where it is supported by the free ends of pivoted ⁇ arms I and 8, the latter being in turn pivotallyrmounted on allongitudinally extending shaft or ⁇ v rod 9 carried by the'machine proper.
- the knife bar II On the knife bar II adjacent one end of the reciprocating knife 3, I provide astop plate Ill which extends a predetermined distance below the free edge of the knife ⁇ 3and is adapted to normally abutthe cutting edge of the stationary knife 2 to Iinsure proper shearing alignment of the two
- the knife bar I isA AspringsV llfwhichtend to maintain the abutment each endfof the shaft 6, one end of each spring 7 being lixedfto theshaft and the other end engaging the; knife ba'r 4 'to cause a rotary tension thereon.
- a rotary shaft ,I3 operatively connectedin any suitable manner to the motive power of the ma- ⁇ 'chir'1e"'proper extends longitudinally above thereciprocating knife bar 4 and carries a pair of cams I4 and I5, one adjacent each of the arms 'I and 8, said arms beingprovided with rollers 14a and I5a' arranged in line for engagement by the respec ⁇ tive cams.
- cams are so designed and positioned on the shaft that the raised portion of cam I5 is preferably slightly in advance of the raised portion of cam I4, whereby upon the rotation of the shaft I3, the end of the reciprocating knife 3 adjacent the cam I5 cuts slightly in ad- Vance of the other end, thereby affecting a shearing action on the web.
- a tilting cam I6 adapted to cooperate with a roller I'l carried by an upwardly extending rsis arm I8 on the knife bar 4. It will be noted that the tilting cam I6 is timed with respect to the cams I4 and I5 so as to operate immediately upon the completion ⁇ of the cutting action of the knife to instantly tilt the knife 3 outwardly by rocking the cutter bar 4 on its shaft in opposition to the action of the springs II.
- the forward edge Ia of the cam I6 is abrupt to insure immediate action in tilting the knife 3, but the rear or trailing edge I6b of said cam very gradually recedes so as to retard the return of the knife 3 to normal position by the springs I I and thus prevent a sudden shock which would otherwise occur when the stop plate I0 contacts the forward edge of the stationary knife 2.
- This patch cutting mechanism is installed adjacent the feed rolls (not shown) of the machine with which it is to be used, and the shaft I3 is operatively connected in any suitable manner to the motive power of the machine so as to operate in timed relation with the feed of the web W.
- the web W is 'fed past the stationary knife 2 at any predetermined speed and as the shaft I3 rotates in the direction of the arrow (Figs. 2 and 3), the cams I4 and I5 intermittently cause the knife 3 to shear patches from the web, the springs I2 on the shaft 9 causing the return of theknife 3 after each cuttingoperation.
- the ⁇ forward face Ia of the tilting cam I6 engages the roller I'I on the upwardly extending arm I8 which rotates the knife bar 4 vand tilts the knife 3 in a direction away from the stationary knife, 'thereby preventing the advancing edge of the lcontinuously fed web from curling up behind the knife 3.
- the contour of the trailing edge I'Gb of the ⁇ cam IB insures the gradual return of the knife 3 to normal position without'permitting a sudden shock when the stop plate I0 contacts the for- .insures a substantially perpendicular cutting action of the knife.
- the fact thatA the arms 'I and 8 are pivoted to the rod or shaft 9 would normally cause the knife bar and knife to describe an arc.
- Web cutting mechanism including a stationary knife, a pair of arms pivotally mounted above said stationaryknife, a cross bar rotatably supported at the free ends of said arms, a shearing Vknife carried by said cross bar, spring means tending to normally maintain said -arms in raised position, rotatable cam meansfor intermittently depressing said arms and shearing knife against the tension of said spring means, to effect a shearing action with said stationary knife, a stop and guide abutment carried by-said cross bar adjacent one end of said shearing knife and extending beyond the cutting edge of the latter, means cooperating with said-cross bar for yieldably maintaining said abutment in engagement with the cutting edgeof said stationary-knife, whereby the arcuate movement of said pivoted arms is compensated for to maintain said shearing knife substantially perpendicular to said stationary knife during its downward movement, a second rotatable cam arranged intimed relation with said'rst'named cam means and operatively associated with said cross
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Description
Jan. 9, 1,940. l w, PLSHMAKER A 2,186,884
WEB CUTTING MECHANISM Filed June 22, y1938 2 Sheets-Sheet 1 Jan. 9, 1940. w. P. SHOMAKER 2,186,884
Filed June 22, 1938 2 Sheets-Sheet 2 Patented Jan. 9, 1940 UNITED STATES PATENT OFFICE Wesley P. Shomaker, Richmond, Va. Application June 22, 1938, Serial No. 215,255
, My invention consists in new and useful im-4 provements in a web cutting mechanism for use in continuous feed, power-operated machines, and is primarily directed kto a patch cutting device for severing from a web of transparent material, 'strips for application to' window-type envelopes. It is the object of my invention to provide a. stripl cutting mechanism of this type wherein a continuously fed web may be severed at intervals Without interrupting or obstructing the continuous feed of the web. j
Another object of thepresent invention resides in the structure and operation of the knife Wherebythe latter, after severing a patch or strip, is automatically tilted in the direction of travel of advancing edge of the web, after which said knife is slowly returned to normal position.
l A further object of my invention is to provide a cutting knife and operating cam arrangement whereby the knife is subjected to a minimum of shock and strain, thus prolonging the life and utility of the knife.
A still further object of my invention isto pro- Vide a web cutting mechanism including a horizontal stationary knife and a perpendicular mo-vable knife lmounted on arms adapted to swing in anarc, said movable knife lbeing provided with a secondary fulcrum and means co-acting therewith ,to compensate for the arcuate movement of said supporting arms, whereby the shearing action is maintained substantially perpendicular.
. 'With the above and other objects in view which will appear as the description proceeds, my inven- Ition resides in the novel vfeatures herein set forth, illustratedhin the accompanyingv drawings and more particularly pointed out in the appended 4Referring tothe drawings in which numerals of like characterdesignate similar parts throughout the several views,
Fig. 1 is a perspective view of my improved strip cutting mechanism, showing the knife and cams in non-cutting positions.
Fig. 2 is a transverse section of the same, showing a continuous web being fed through the mechanism, with the parts in the positions shown in Fig. 1.
Fig. 3 is a similar view showing the parts in cutting position, and
Fig. 4 is a fragmentary view similar to those just referred to but showing the knife in tilted position which immediately follows the cutting position.
In the drawings, I represents a base o-r block in lthe Webso as to prevent the curling up of the` 2 claims. (c1. 164-43) which is preferably inset a horizontal stationary knife 2 of any' suitablev metal. A reciprocating vknife 3 perpendicular to said stationary knife and adapted to cooperate therewith, is secured to a knife bar 4 by means of screws 5 or other suitable means, with its yfree cutting edge normally in line forshearing engagement with the 'cutting edge of the stationary' knife 2. The knife bar 4 is rotatable andfor this purpose may be mounted ,ony an axle or shaft ty which projects therefrom at both ends where it is supported by the free ends of pivoted` arms I and 8, the latter being in turn pivotallyrmounted on allongitudinally extending shaft or`v rod 9 carried by the'machine proper.
l .f On the knife bar II adjacent one end of the reciprocating knife 3, I provide astop plate Ill which extends a predetermined distance below the free edge of the knife`3and is adapted to normally abutthe cutting edge of the stationary knife 2 to Iinsure proper shearing alignment of the two As heretofore pointed out, the knife bar I isA AspringsV llfwhichtend to maintain the abutment each endfof the shaft 6, one end of each spring 7 being lixedfto theshaft and the other end engaging the; knife ba'r 4 'to cause a rotary tension thereon.
`Similar springs I2 may be employed on the shaft l9 `for normally lifting the arms `I and 8, to
maintain the knives 2 and 3 outof engagement.
A rotary shaft ,I3 operatively connectedin any suitable manner to the motive power of the ma- `'chir'1e"'proper extends longitudinally above thereciprocating knife bar 4 and carries a pair of cams I4 and I5, one adjacent each of the arms 'I and 8, said arms beingprovided with rollers 14a and I5a' arranged in line for engagement by the respec` tive cams. These cams are so designed and positioned on the shaft that the raised portion of cam I5 is preferably slightly in advance of the raised portion of cam I4, whereby upon the rotation of the shaft I3, the end of the reciprocating knife 3 adjacent the cam I5 cuts slightly in ad- Vance of the other end, thereby affecting a shearing action on the web. 'A
Intermediate the cams I4 and I5 on the shaft I3 I provide a tilting cam I6 adapted to cooperate with a roller I'l carried by an upwardly extending rsis arm I8 on the knife bar 4. It will be noted that the tilting cam I6 is timed with respect to the cams I4 and I5 so as to operate immediately upon the completion` of the cutting action of the knife to instantly tilt the knife 3 outwardly by rocking the cutter bar 4 on its shaft in opposition to the action of the springs II. The forward edge Ia of the cam I6 is abrupt to insure immediate action in tilting the knife 3, but the rear or trailing edge I6b of said cam very gradually recedes so as to retard the return of the knife 3 to normal position by the springs I I and thus prevent a sudden shock which would otherwise occur when the stop plate I0 contacts the forward edge of the stationary knife 2.
This patch cutting mechanism is installed adjacent the feed rolls (not shown) of the machine with which it is to be used, and the shaft I3 is operatively connected in any suitable manner to the motive power of the machine so as to operate in timed relation with the feed of the web W.
In operation, the web W is 'fed past the stationary knife 2 at any predetermined speed and as the shaft I3 rotates in the direction of the arrow (Figs. 2 and 3), the cams I4 and I5 intermittently cause the knife 3 to shear patches from the web, the springs I2 on the shaft 9 causing the return of theknife 3 after each cuttingoperation. Immediately upon the conclusion of each down-stroke 'of the knife 3, the `forward face Ia of the tilting cam I6 engages the roller I'I on the upwardly extending arm I8 which rotates the knife bar 4 vand tilts the knife 3 in a direction away from the stationary knife, 'thereby preventing the advancing edge of the lcontinuously fed web from curling up behind the knife 3. This operation takes place simultaneously with the lifting of the arms 'I .and 8 by the springs I2, and by the time the knife 3 has assumed its uppermost position, the operation of the tilting cam I6 and springs II has begun to Aslowly return the knife 3 to its normalposition Aready for the next down-stroke.
I As before stated, the contour of the trailing edge I'Gb of the `cam IB insures the gradual return of the knife 3 to normal position without'permitting a sudden shock when the stop plate I0 contacts the for- .insures a substantially perpendicular cutting action of the knife. In other words, the fact thatA the arms 'I and 8 are pivoted to the rod or shaft 9 would normally cause the knife bar and knife to describe an arc. However, with the knife bar pivoted or rotary on the ends of the arms 1 and 8 and the normal engagement of the stop plate I0 with the forward edge of the stationary knife 2, the arc described by the arms 'I and 8 is compensated for and the substantially perpendicular cutting operation of the knife 3 is insured, and locking or jamming of the movable knife against the stationary knife is prevented.
yFrom the foregoing it is believed that the construction and advantages of my improved web cutting mechanism may be readily understood by those skilled in the art without further description, it being borne in mind that numerous changes may be made in the details disclosed without departing from the spirit of my invention as set out in the following claims.
What I claimand desire to secure by Letters Patent is:
l. Web cutting mechanism including a stationary knife, a pair of arms pivotally mounted above said stationaryknife, a cross bar rotatably supported at the free ends of said arms, a shearing Vknife carried by said cross bar, spring means tending to normally maintain said -arms in raised position, rotatable cam meansfor intermittently depressing said arms and shearing knife against the tension of said spring means, to effect a shearing action with said stationary knife, a stop and guide abutment carried by-said cross bar adjacent one end of said shearing knife and extending beyond the cutting edge of the latter, means cooperating with said-cross bar for yieldably maintaining said abutment in engagement with the cutting edgeof said stationary-knife, whereby the arcuate movement of said pivoted arms is compensated for to maintain said shearing knife substantially perpendicular to said stationary knife during its downward movement, a second rotatable cam arranged intimed relation with said'rst'named cam means and operatively associated with said cross bar, for rapidlyv rotating the latter in a direction to tilt said movable rknife away from said stationary knife upon the completionl of each down-stroke, and `means on said second cam for retarding the return movement of said shearing vknife to prevent suddene jecting into the path of rotation of said second cam, for tilting and retardingthe return movement of said shearing knife.
WESLEY P. SHOMAKER.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US215255A US2186884A (en) | 1938-06-22 | 1938-06-22 | Web cutting mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US215255A US2186884A (en) | 1938-06-22 | 1938-06-22 | Web cutting mechanism |
Publications (1)
Publication Number | Publication Date |
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US2186884A true US2186884A (en) | 1940-01-09 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US215255A Expired - Lifetime US2186884A (en) | 1938-06-22 | 1938-06-22 | Web cutting mechanism |
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Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2676657A (en) * | 1949-09-06 | 1954-04-27 | H G Weber & Company Inc | Cutting apparatus for paper bag machinery |
US2951534A (en) * | 1957-03-01 | 1960-09-06 | Ibm | High speed punch |
US3023656A (en) * | 1958-10-20 | 1962-03-06 | J F Scholten And Zonen N V | Cutting device |
US3088354A (en) * | 1958-05-09 | 1963-05-07 | Edward M Voorhees | Doughnut cutter and depositor |
US3148843A (en) * | 1959-10-09 | 1964-09-15 | Fmc Corp | Breaker bar for web rewinding machine |
US3248983A (en) * | 1963-09-05 | 1966-05-03 | Carroll Coyne W | Paper roll converter mechanism |
US3286568A (en) * | 1964-03-25 | 1966-11-22 | Powers Chemco Inc | Reciprocable cutting mechanism with stripper |
US3568556A (en) * | 1968-06-04 | 1971-03-09 | Hell Rudolf Dr Ing Kg | Shearing device for web strips |
US3738213A (en) * | 1971-09-23 | 1973-06-12 | Itek Corp | Cutting mechanism |
US3831478A (en) * | 1973-07-30 | 1974-08-27 | Eastman Kodak Co | Print cutting mechanism for bordered and borderless prints |
US4697488A (en) * | 1985-03-04 | 1987-10-06 | Cole Gregory B | Device for slicing and storing food such as cheese and the like |
US5379667A (en) * | 1991-10-28 | 1995-01-10 | General Tire | Pinch cutting method and apparatus |
EP1231035A1 (en) * | 2001-02-09 | 2002-08-14 | CAVANNA S.p.A. | A method and device for cutting film-like materials, for instance for automatic packaging installations |
US6681688B1 (en) | 2002-09-13 | 2004-01-27 | New Holland North America, Inc. | Round baler with self aligning knives for twine wrapper |
DE202008002459U1 (en) * | 2008-02-21 | 2009-07-02 | Metabowerke Gmbh | Hand-portable separator for thin material plates |
EP2447069A1 (en) * | 2010-11-02 | 2012-05-02 | Komori Corporation | Web cutting device |
DE102015016687A1 (en) * | 2015-12-22 | 2017-07-20 | Proverum Ag | Device for cutting coverings |
-
1938
- 1938-06-22 US US215255A patent/US2186884A/en not_active Expired - Lifetime
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2676657A (en) * | 1949-09-06 | 1954-04-27 | H G Weber & Company Inc | Cutting apparatus for paper bag machinery |
US2951534A (en) * | 1957-03-01 | 1960-09-06 | Ibm | High speed punch |
US3088354A (en) * | 1958-05-09 | 1963-05-07 | Edward M Voorhees | Doughnut cutter and depositor |
US3023656A (en) * | 1958-10-20 | 1962-03-06 | J F Scholten And Zonen N V | Cutting device |
US3148843A (en) * | 1959-10-09 | 1964-09-15 | Fmc Corp | Breaker bar for web rewinding machine |
US3248983A (en) * | 1963-09-05 | 1966-05-03 | Carroll Coyne W | Paper roll converter mechanism |
US3286568A (en) * | 1964-03-25 | 1966-11-22 | Powers Chemco Inc | Reciprocable cutting mechanism with stripper |
US3568556A (en) * | 1968-06-04 | 1971-03-09 | Hell Rudolf Dr Ing Kg | Shearing device for web strips |
US3738213A (en) * | 1971-09-23 | 1973-06-12 | Itek Corp | Cutting mechanism |
US3831478A (en) * | 1973-07-30 | 1974-08-27 | Eastman Kodak Co | Print cutting mechanism for bordered and borderless prints |
US4697488A (en) * | 1985-03-04 | 1987-10-06 | Cole Gregory B | Device for slicing and storing food such as cheese and the like |
US5379667A (en) * | 1991-10-28 | 1995-01-10 | General Tire | Pinch cutting method and apparatus |
EP1231035A1 (en) * | 2001-02-09 | 2002-08-14 | CAVANNA S.p.A. | A method and device for cutting film-like materials, for instance for automatic packaging installations |
US6655251B2 (en) | 2001-02-09 | 2003-12-02 | Cavanna Spa | Method and device for cutting film-like materials, for instance for automatic packaging installations |
US6681688B1 (en) | 2002-09-13 | 2004-01-27 | New Holland North America, Inc. | Round baler with self aligning knives for twine wrapper |
DE202008002459U1 (en) * | 2008-02-21 | 2009-07-02 | Metabowerke Gmbh | Hand-portable separator for thin material plates |
EP2447069A1 (en) * | 2010-11-02 | 2012-05-02 | Komori Corporation | Web cutting device |
CN102555426A (en) * | 2010-11-02 | 2012-07-11 | 小森公司 | Web cutting device |
DE102015016687A1 (en) * | 2015-12-22 | 2017-07-20 | Proverum Ag | Device for cutting coverings |
DE102015016687B4 (en) | 2015-12-22 | 2023-03-02 | Proverum Ag | Apparatus and method for cutting pavement |
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