US2785749A - Strip cutter - Google Patents

Strip cutter Download PDF

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Publication number
US2785749A
US2785749A US501543A US50154355A US2785749A US 2785749 A US2785749 A US 2785749A US 501543 A US501543 A US 501543A US 50154355 A US50154355 A US 50154355A US 2785749 A US2785749 A US 2785749A
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United States
Prior art keywords
cutting
wheels
cutter
shafts
wheel
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Expired - Lifetime
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US501543A
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Jack K Wilson
Norman E Wilson
Robert S Wilson
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Individual
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Priority to US501543A priority Critical patent/US2785749A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/3806—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface
    • B26F1/3813—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work
    • B26F1/3826—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work using a rotary circular cutting member
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/04—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials longitudinally
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0087—Details, accessories or auxiliary or special operations not otherwise provided for for use on a desktop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F2210/00—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products
    • B26F2210/12—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products of fabrics
    • B26F2210/14—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products of fabrics the cutting machine comprising a rotary knife
    • 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
    • Y10T83/483—With cooperating rotary cutter or backup
    • Y10T83/4836—With radial overlap of the cutting members
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6572—With additional mans to engage work and orient it relative to tool station
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6592—Interrelated work-conveying and tool-moving means
    • Y10T83/6598—Tool co-axial with work-conveying means

Definitions

  • This invention relates to shear devices, and more particularly to an improved strip cutter.
  • a main object of the invention is to provide a novel and improved implement for cutting flexible sheet material, such as cloth or the like, into strips, said implement being simple in construction, being easy to operate, and being easy to mount on a work surface.
  • a further object of the invention is to provide an improved strip cutting tool which is inexpensive to manufacture, which is durable in construction, which is substantially self-sharpening and which enables strips to be cut to close dimensional tolerances.
  • Figure 1 is a side elevational view of an improved strip cutting implement constructed in accordance with the present invention.
  • Figure 2 is a vertical cross sectional detail view taken substantially on the line 2-2 of Figure 1.
  • Figure 3 is a vertical cross sectional view taken substantially on the line 3-3 of Figure 2.
  • the improved strip cutting implement is designated generally at 11 and comprises a bracket member 12 having a bottom flange 13 in which is threadedly engaged a clamping screw 14, said bracket member comprising the top flange 15 which is engageable over the edge of a table, or other suitable work support, whereby the bracket 12 may be rigidly secured to the table or other support by tightening the clamping screw 14.
  • a housing 16 Secured on the top flange 15 of the bracket 12 in any suitable manner is a housing 16 containing conventional gearing operated by an external crank 17 secured on the end of shaft 19, shaft 19 being geared to shaft 18 so that the shafts 18 and 19 are driven in opopsite directions responsive to the rotation of the crank 17 by the coupling gearing contained in the housing 16.
  • the shaft 19 carrying the crank 17 may be provided with a gear which meshes with a gear carried on the inner end of the shaft 18, whereby the'shafts 18 and 19 will be rotated in opposite directions responsive to the rotation of the crank 17.
  • Designated generally at 21 and 22 are respective cutter wheels secured on the ends of the shafts 18 and 19 and being arranged perpendicular to the shafts 18 and 19 and substantially in the same plane.
  • the shafts 18 and 19 are parallel and extend horizontally, whereby the cutter wheels 21 and 22 are arranged in a common vertical plane perpendicular to the plane of the shafts 18 and 19.
  • the cutter wheel 21 is formed on the side thereof adjacent the housing 16 with the circular cutting disc element 23, whereas the cutter wheel 22 is formed on the outer side thereof with a similar cutting disc element 24, the disc elements 23 and 24 being thus disposed with their inside cutting faces substantially coplanar.
  • the wheel 21 is formed with the gripping wheel element 25 coplanar with the lower cutting wheel 24, and similarly, the wheel 22 is formed with the circular gripping wheel element 26 coplanar with the upper cutting
  • the peripheral edges of the gripping wheel elements 25 and 26 are serrated and are arranged closely adjacent to the peripheral edges of the respective cutter wheel elements 24 and 23, so that the severed edge portions of flexible sheet material, such as cloth, or the like, sheared by the action of the cutting wheels 23 and 24 will be gripped as the sheet material is passed through the wheels.
  • the inside faces of the respective cutting wheels 23 and 24 are formed with annular grooves 27 and 28 concentric with the shafts 18 and 19 to define respective annular relief areas included within the overlapping cutting edge portions of the cutter wheel elements 23 and 24, whereby the outer shearing surfaces 29 and 30 engage each other at the diamond-shaped overlapping portions 40, 40 of the wheel elements shown in Figure 2, to provide a self-sharpening action.
  • the contact area between the cutting discs is only at the two diamond-shaped areas 40, 40.
  • the discs are held in contact with each other by the spring pressure between the housing 16 and upper shaft 18 and the reaction of same by the lower shaft gear and the housing. The cutting action is produced because of this contact.
  • a horizontally extending table member 31 having a depending front flange 32 formed with the horizontal slot 33.
  • Supported on the table 31 is the upstanding, transversely extending guide bar 34 which is formed with the depending lug 35 overlying the flange 32 and adjustably secured thereto through the slot 33 by a clamping bolt 36.
  • the clamping bolt 36 is provided with a suitable clamping nut on its inner end portion, whereby the guide bar 34 may be secured in an adjusted position with respect to the plane of the rotary wheels 21 and 22.
  • a strip of material may be formed by feeding the material through the wheels with one edge of the material supported against the upstanding guide bar 34, the crank 17 being rotated to cause the cutting wheels to grip and sever the material and to feed said material to the wheels.
  • the severed portions of the material are gripped by the cooperation of the serrated wheel portions 25, 26 with the edges of the respective wheels 24 and 23, whereby the material is moved through the device responsive to the rotation of the crank 17.
  • the surfaces 29 and 30 are rubbed against each other at the overlapping portions of the wheels, providing a selfsharpening action which eliminates the necessity of sharpening or refinishing of the shearing surfaces of the wheels.
  • a strip cutter comprising a support, a pair of parallel shafts journaled on said support, means for simultaneously rotating said shafts in opposite directions, respective cutting discs arranged perpendicular to and secured on said shafts and having smooth peripheral portions and overlapping cutting edge portions, respective serrated eii'eular grippingfmembers-"concentrically secured t0 said -cutting discs, 'the serrated grippingmembers being smaller in diameter than said cutting 'discs, and the serrated gripping member of each cuttingdisc being substantially coplanar-with -and having-a peripheral pertion thereof located closely-adjacent to; a peripheral sportion of the other cutting disc, said cutting discs beingflfdrmed with se'spective concentric-annularreliefigfooves-oh the outer portions -of- 't-he'ir inside-faces andbeing included in said overlapping cutting edge -portions; said-cutting edge perlions-overlapping each othePa-ndbeing in" contact at two

Description

March 19, 1957 J. K. WILSON ETAL 2,785,749
STRIP CUTTER Filed April 15, 1955 INVENTORS Jack K. Wi/qorl, Norman E. Wilson 6 A 7 TOR/V5545 srrur CUTTER Jack K; Wilson, Norman E. Wilson, and Robert S. Wilson,
\ a 7 Springfield, Mo.
' Application Apr-i115, 1955, Serial No. 501,543
1 Claim. (Cl. 164-61) This invention relates to shear devices, and more particularly to an improved strip cutter.
A main object of the invention is to provide a novel and improved implement for cutting flexible sheet material, such as cloth or the like, into strips, said implement being simple in construction, being easy to operate, and being easy to mount on a work surface.
A further object of the invention is to provide an improved strip cutting tool which is inexpensive to manufacture, which is durable in construction, which is substantially self-sharpening and which enables strips to be cut to close dimensional tolerances.
Further objects and advantages of the invention will become apparent from the following description and claim, and from the accompanying drawings, wherein:
Figure 1 is a side elevational view of an improved strip cutting implement constructed in accordance with the present invention.
Figure 2 is a vertical cross sectional detail view taken substantially on the line 2-2 of Figure 1.
Figure 3 is a vertical cross sectional view taken substantially on the line 3-3 of Figure 2.
Referring to the drawings, the improved strip cutting implement is designated generally at 11 and comprises a bracket member 12 having a bottom flange 13 in which is threadedly engaged a clamping screw 14, said bracket member comprising the top flange 15 which is engageable over the edge of a table, or other suitable work support, whereby the bracket 12 may be rigidly secured to the table or other support by tightening the clamping screw 14. Secured on the top flange 15 of the bracket 12 in any suitable manner is a housing 16 containing conventional gearing operated by an external crank 17 secured on the end of shaft 19, shaft 19 being geared to shaft 18 so that the shafts 18 and 19 are driven in opopsite directions responsive to the rotation of the crank 17 by the coupling gearing contained in the housing 16. Thus, as will be readily apparent to anyone skilled in the art, the shaft 19 carrying the crank 17 may be provided with a gear which meshes with a gear carried on the inner end of the shaft 18, whereby the'shafts 18 and 19 will be rotated in opposite directions responsive to the rotation of the crank 17.
Designated generally at 21 and 22 are respective cutter wheels secured on the ends of the shafts 18 and 19 and being arranged perpendicular to the shafts 18 and 19 and substantially in the same plane. As will be apparent from Figure l, the shafts 18 and 19 are parallel and extend horizontally, whereby the cutter wheels 21 and 22 are arranged in a common vertical plane perpendicular to the plane of the shafts 18 and 19.
The cutter wheel 21 is formed on the side thereof adjacent the housing 16 with the circular cutting disc element 23, whereas the cutter wheel 22 is formed on the outer side thereof with a similar cutting disc element 24, the disc elements 23 and 24 being thus disposed with their inside cutting faces substantially coplanar. As
.wheel element 23.
2,785,749 Ice Patented Mar. '19, 1957 shown in Figure 2, the peripheral portion of the disc 23 overlaps the peripheral portion of the disc 24 and is in shearing cooperation therewith.
The wheel 21 is formed with the gripping wheel element 25 coplanar with the lower cutting wheel 24, and similarly, the wheel 22 is formed with the circular gripping wheel element 26 coplanar with the upper cutting As, shown in Figure 1, the peripheral edges of the gripping wheel elements 25 and 26 are serrated and are arranged closely adjacent to the peripheral edges of the respective cutter wheel elements 24 and 23, so that the severed edge portions of flexible sheet material, such as cloth, or the like, sheared by the action of the cutting wheels 23 and 24 will be gripped as the sheet material is passed through the wheels.
As shown in Figures 2 and 3, the inside faces of the respective cutting wheels 23 and 24 are formed with annular grooves 27 and 28 concentric with the shafts 18 and 19 to define respective annular relief areas included within the overlapping cutting edge portions of the cutter wheel elements 23 and 24, whereby the outer shearing surfaces 29 and 30 engage each other at the diamond-shaped overlapping portions 40, 40 of the wheel elements shown in Figure 2, to provide a self-sharpening action. Thus, the contact area between the cutting discs is only at the two diamond- shaped areas 40, 40. The discs are held in contact with each other by the spring pressure between the housing 16 and upper shaft 18 and the reaction of same by the lower shaft gear and the housing. The cutting action is produced because of this contact.
Rigidly secured to the intermediate portion of the main housing 16 is a horizontally extending table member 31 having a depending front flange 32 formed with the horizontal slot 33. Supported on the table 31 is the upstanding, transversely extending guide bar 34 which is formed with the depending lug 35 overlying the flange 32 and adjustably secured thereto through the slot 33 by a clamping bolt 36. The clamping bolt 36 is provided with a suitable clamping nut on its inner end portion, whereby the guide bar 34 may be secured in an adjusted position with respect to the plane of the rotary wheels 21 and 22.
In operation, a strip of material may be formed by feeding the material through the wheels with one edge of the material supported against the upstanding guide bar 34, the crank 17 being rotated to cause the cutting wheels to grip and sever the material and to feed said material to the wheels. The severed portions of the material are gripped by the cooperation of the serrated wheel portions 25, 26 with the edges of the respective wheels 24 and 23, whereby the material is moved through the device responsive to the rotation of the crank 17. Concurrently with the shearing or cutting action, the surfaces 29 and 30 are rubbed against each other at the overlapping portions of the wheels, providing a selfsharpening action which eliminates the necessity of sharpening or refinishing of the shearing surfaces of the wheels.
While a specific embodiment of an improved strip cutter has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention except as defined by the scope of the appended claim.
What is claimed is:
A strip cutter comprising a support, a pair of parallel shafts journaled on said support, means for simultaneously rotating said shafts in opposite directions, respective cutting discs arranged perpendicular to and secured on said shafts and having smooth peripheral portions and overlapping cutting edge portions, respective serrated eii'eular grippingfmembers-"concentrically secured t0 said -cutting discs, 'the serrated grippingmembers being smaller in diameter than said cutting 'discs, and the serrated gripping member of each cuttingdisc being substantially coplanar-with -and having-a peripheral pertion thereof located closely-adjacent to; a peripheral sportion of the other cutting disc, said cutting discs beingflfdrmed with se'spective concentric-annularreliefigfooves-oh the outer portions -of- 't-he'ir inside-faces andbeing included in said overlapping cutting edge -portions; said-cutting edge perlions-overlapping each othePa-ndbeing in" contact at two substantially diamond-shaped areas to --provide--a-selfsharpening acti0n,-= a table element secured --tos'aid st pf port -andhaving-amedge portion-extending adjacentssaid bverlapping disc edge porticins, said table element being parallel .to saidsshafts, and .an tupstandingtguide member on said table element and extending parallel to said cutting discs.
References Cited in the file of this patent UNITED STATES PATENTS
US501543A 1955-04-15 1955-04-15 Strip cutter Expired - Lifetime US2785749A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962943A (en) * 1958-02-28 1960-12-06 George J Mumper Manufacture and assembly of partitions
US3188780A (en) * 1961-12-19 1965-06-15 Butter Pak Inc Method of and apparatus for forming items of deformable material
US3964359A (en) * 1974-10-24 1976-06-22 Bell & Howell Company Apparatus for cutting sheet material
US4024782A (en) * 1974-04-01 1977-05-24 Eastman Kodak Company Apparatus for cutting the trailing end of an expiring web
US4501177A (en) * 1982-10-26 1985-02-26 Kennecott Corporation Edge trimming and scrap disposal system
CN112960454A (en) * 2021-02-23 2021-06-15 周晓琪 Cutting and winding device for melt-blown fabric

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US453380A (en) * 1891-06-02 tinchee
US473731A (en) * 1892-04-26 edwards
US724206A (en) * 1902-12-06 1903-03-31 Thomas M Robinson Shears for cutting corrugated sheet metal.
US1727796A (en) * 1928-10-20 1929-09-10 Continental Can Co Slitter cutter
US2004021A (en) * 1933-10-25 1935-06-04 Raymond M Tucker Feeding mechanism for cutting machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US453380A (en) * 1891-06-02 tinchee
US473731A (en) * 1892-04-26 edwards
US724206A (en) * 1902-12-06 1903-03-31 Thomas M Robinson Shears for cutting corrugated sheet metal.
US1727796A (en) * 1928-10-20 1929-09-10 Continental Can Co Slitter cutter
US2004021A (en) * 1933-10-25 1935-06-04 Raymond M Tucker Feeding mechanism for cutting machines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962943A (en) * 1958-02-28 1960-12-06 George J Mumper Manufacture and assembly of partitions
US3188780A (en) * 1961-12-19 1965-06-15 Butter Pak Inc Method of and apparatus for forming items of deformable material
US4024782A (en) * 1974-04-01 1977-05-24 Eastman Kodak Company Apparatus for cutting the trailing end of an expiring web
US3964359A (en) * 1974-10-24 1976-06-22 Bell & Howell Company Apparatus for cutting sheet material
US4501177A (en) * 1982-10-26 1985-02-26 Kennecott Corporation Edge trimming and scrap disposal system
CN112960454A (en) * 2021-02-23 2021-06-15 周晓琪 Cutting and winding device for melt-blown fabric

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