US3779123A - Knife holder and knife therefor - Google Patents

Knife holder and knife therefor Download PDF

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Publication number
US3779123A
US3779123A US3779123DA US3779123A US 3779123 A US3779123 A US 3779123A US 3779123D A US3779123D A US 3779123DA US 3779123 A US3779123 A US 3779123A
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Prior art keywords
knife
surface
holder
bottom
wall
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G Chafee
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CUMBERLAND ENG CO
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CUMBERLAND ENG CO
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting 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
    • B26D1/01Cutting 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
    • B26D1/12Cutting 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
    • B26D1/25Cutting 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
    • B26D1/34Cutting 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
    • B26D1/38Cutting 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614Means for mounting the cutting member
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/465Cutting motion of tool has component in direction of moving work
    • Y10T83/4766Orbital motion of cutting blade
    • Y10T83/4795Rotary tool
    • Y10T83/4847With cooperating stationary tool
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/485Cutter with timed stroke relative to moving work
    • Y10T83/494Uniform periodic tool actuation
    • Y10T83/501With plural tools on a single tool support
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/929Tool or tool with support
    • Y10T83/9457Joint or connection
    • Y10T83/9464For rotary tool
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/929Tool or tool with support
    • Y10T83/9493Stationary cutter

Abstract

A knife holder and knife therefor to be used on a machine for dicing or cutting plastics, the knife holder being an elongated body having a channel therein, the channel being shaped to hold an elongated insertable knife blade against the front wall of the channel, and an elongated wedge mounted between the knife and the back wall of the channel to clamp the knife securely in the knife holder. The walls of the channel are divergent from each other. The cooperation between the knife, wedge, and front and back walls of the channel is such that wedge-fastening screws or bolts have reduced forces acting on them. In a second embodiment, means are also provided whereby regound or replacement knives may be fitted into the knife holder with a minimum of adjustment necessary in respect to the fly knives of the machine.

Description

9' United States Patent Dec. 18, 1973 KNIFE HOLDER AND KNIFE THEREFOR [75] Inventor: George G. Chafee, Narrangansett,

Primary Examiner-Frank T. Yost: Att0rney-Burnett W. Norton [57] ABSTRACT A knife holder and knife therefor to be used on a ma chine for dicing or cutting plastics, the knife holder being an elongated body having a channel therein, the channel being shaped to hold an elongated insertable knife blade against the front wall of the channel, and an elongated wedge mounted between the knife and the back wall of the channel to clamp the knife securely in' the knife holder. The walls of the channel are divergent from each other. The cooperation between the knife, wedge, and front and back walls of the channel is such that wedge-fastening screws or bolts have reduced forces acting on them. In a second embodiment, means are also provided whereby regound or replacement knives may be fitted into the knife holder with a minimum of adjustment necessary in respect to the fly knives of the machine.

12 Claims, 7 Drawing Figures PMErHEM W FIG. 6

FIG. 3

1 KNIFE HOLDER AND KNIFE THEREFOR BACKGROUND OF THE INVENTION The art of fastening knives into holders is extensive. However, previous means for so doing, particularly where wedging means are used, have been deficient in certain aspects, as follows: One of the problems concerned with prior wedging means is that the force which needsto be exerted by the screws which retain the wedge in place and force it against the knife, is too great. Another disadvantage is that when wedging means are used to wedge down against the knife to hold it securely in place, it often becomes difficult to remove both the wedge and the knife.

A further difficulty with prior art devices is that when an assembly of a knife and holder is first made, the knife is generally inserted into the holder, and then the knife and the holder are ground together so that the dimensions necessary for use in the machine are accurately fixed. Thereafter, when the knife wears and needs to be re-ground, or a new knife is to be substituted for the worn one, it is necessary either to regrind the knife and holder, or to'make extensive adjustments, both of which mean down-time for the machine, that is, time when the machine is not doing productive work. Such down-time can be expensive to the user of the machine.

SUMMARY OF THE INVENTION Accordingly, one object of this invention is to provide a knife holder and a knife therefor, in which, when the knife is inserted in the machine, calibration of the knife with respect to the holder and other parts of the machine is automatic and accurate with a bare mini mum of adjustment necessary.

A second object of the invention is the provision of a knife holder and knife therefor characterized in that when a knife is to be resharpened, the width of the knife is so adjusted that when the user of the knife reinserts it into its holder on the machine, the position of the knife with respect to other parts will, as aforesaid, be positioned with only a bare minimum of adjustment necessary.

Yet another object in the invention is the provision of a knife'holder and knife therefor of either of the kinds above, in "which the forces needed to be exerted by the bolts or fastening means which hold the wedge (and thus the knife) in the holder, are minimized by the shape of the holder and wedge.

Other objects and advantages will be in part apparent and in part pointed out hereinafter.

Accordingly, the invention comprises the elements and combinations of elements, features of construction, and arrangements of parts which will be exemplified in the structures hereinafter described, and the scope of the application of which will be indicated in the appended claims.

In the accompanying drawings, in which two of the various possible embodiments of the invention are illustrated:

FIG. 1 illustrates schematically a typical plastic dicing machine, but in which the knife holder and knife combined therewith of this invention are shown mounted in position to cooperate with the rotary fly knives of the machine;

. FIG. 2 is an enlarged sectional view of a portion of the knife and its holder of the FIG. 1 embodimentj' FIG. 3 is an end elevation of the holder (without knife and wedge) of FIG. 2;

FIG. 4 is an enlarged cross-section taken in the direction of sight lines 4-4 on FIG. 2;

FIG. 5 is an end view of the holder and knife of FIGS. 1 and 2, given to illustrate certain angular relationships of surfaces within the holder, and dimensions of certain portions of the holder and the knife fastened therein;

FIG. 6 is a sectional view taken in the direction of sight lines 6--6 on FIG. 2; and

FIG. 7 is an end view of a second embodiment of the invention, the view illustrating another knife to be used in combination with the holder of FIG. 2.

Throughout the drawings, similar reference characters indicate corresponding parts, and dimensions of certain of the parts as shown in the drawings may have been modified and/or exaggerated for the purpose of clarity of illustration and understanding of the invention.

Referring now to FIG. 1, there is illustrated one embodiment of the invention shown in its operative relationship with a typical set of rotary knives of a standard dicing machine such as that manufactured by Cumberland Engineering Company Inc. of South Attleboro, Mass, and illustrated in their Bulletin No. 640. The dicing machine has a rotor 2 having mounted thereon the plurality of toothed dicing knives 4, the rotor being mounted on a shaft, a section 6 of which is shown. (The rotor is illustrated schematically since it is not part of this invention.) Cooperating with the rotary knives 4 is a bed knife assembly mounted on a bed 8 of which only a portion is shown, the assembly of the knife holder 10, knife 12 and wedge 14 which comprise this invention.

It will be understood that the remaining parts of the dicing machine which are not illustrated here, are conventional, and may be found in machines manufactured by the above referred to Cumberland Engineering Company Inc.

Referring now to FIG. 2, there is illustrated (in enlarged detail as compared to FIG. 1), a portion of the bed 8, and a portion of the knife holder 10, its knife 12, and wedge 14 which cooperate with the holder 10 to clamp the knife 12 in its desired position. The wedge 14 is provided with the'counter bores 16 and suitable holes 19 through 'which pass the bolts or machine screws 18 which draw the" wedge 14 down into its locking position, the bolts 18 threading into suitable holes in the holder 10. i

In the illustration, the holder 10 is fastened to bed 8 by means of bolts 20 in conventional manner, prior to the insertion of the knife 12 and the wedge 14 into the holder.

From an examination of the drawings (see FIGS. 2-3), it will be clear that the holder 10 is provided with a channel 22 having a bottom which has a portion 24 approximately parallel to the top surface 26 of the holder, and a remaining portion 28 which diverges downwardly and away from the portion 24 and toward the front surface 30 of the holder. The channel is provided with a back wall 32 and a front wall 34 as shown.

Referring now to FIG. 5, certain angular relationships of these walls is shown as follows: thewall 32 makes an acute angle with the plane of bottom portion 24 of the channel and is preferably at a 30 angle to the vertical, that is, a 60 angle to the bottom 24. The wall 34 makes an obtuse angle with the plane of the bottom portion 24 and is preferably at an angle of approximately 135 to the bottom 24, that is, an angle of 45 to the vertical. Thus, it will be observed that the walls 32 and 34 diverge from'each other, and the angular diversion is approximately 15. While this is the preferred relationship, other angles may be used, and the angles chosen will affect the clamping action of the wedge 14. For example, if the angular diversions between walls 32 and 34 is made less, for example, 5, then the clamping force exerted by the wedge against the inserted knife will be greater, but it will be more difficult to remove both the wedge when it is desired to remove the knife. correspondingly, if the divergence is made greater than then it will be found that while it is easier to move the wedge, nevertheless the wed'ging action is not as great and therefore the wedging screws 18 will have to exert a greater force.

Knife 12 extends the length of the holder 10 itself. The knife has parallel faces 38 and 40, and when the knife is positioned in the holder, face 38 rests against wall 34. Therefore, the knife itself assumes the angular tilt of the wall 34. The other face 40 is exposed to be engaged by the wedge 14. The latter is provided with sloping surfaces which match the angles of the walls 32 and the wall 34. Thus, when the clamping screws 18 are tightened down, the resultant forces exerted by the wedge will be to clamp the knife 12 securely in the holder. The bottom of the knife rests against portion 28 of the channel bottom.

In general, an initial knife is made greater in width than the distance of surface 28 from the top surface 26 of the holder, and the wedge 18 is then inserted and tightened down. Thereafter, the top surface 42 of the knife is ground down to be level with the top surface 26 of the holder, and by suitable forming means teeth 44 are cut in both the forward surface 30 of the holder and the upwardly forward edge portion 46 of the knife. As desired, cutting clearance is provided as to the combined forward walls of the knife and the holder.

Suitable threaded holes 51 are provided in the wedge 14, in order to assist in lifting the wedge from the holder when it is desired to change a knife. Threaded rods are temporarily threaded into these holes to act as handles to lift the wedge.

It will be thus observed that from the cutting points 50 'of the knife to the lower edge portion or bottom of the knife there will result a predetermined, distance illustrated by A in FIGS. 5 and 6. It will also be observed that the forward surface 30 of the holder terminates short of the plane of the top surface 26 of the holder, as illustrated by arrow B inFIG. 5.

As a result of this construction, forces being exerted against the forward edges of the knife 12 during use for dicing plastic materials will generally resolve into forces driving the knife directly down against its firm seating on portion 28 of the bottom channel; and forces causing a moment in the knife about a pivot point at the point B, which forces will be exerted against the face of the wedge which rests against the face 40 of the knife. These forces will then be opposed by angular wall 32 of the channel. As a result of this, it will be observed that in this invention the forces which need to be exerted by the clamping-screws 18 are minimized as compared to prior art machines in which the clamping screws must resist all of the forces.

It will be noted that the clearance holes 19 for the bolts 18 are made somewhat larger than usual. As indicated above, the forces required to be exerted by the screws 18 in this invention are less than is found in prior art devices, and laterally directed forces against the wedge will be resisted by the wall 32. Therefore, the bolts 18 do not and should not be subject to such forces. Consequently, the clearance holes are made larger than usual.

It will be realized that while in the above description knife holder 10 is shown and described as an element separate from bed 8, nevertheless, the bed 8 itself may be formed with the proper channel and wedge to receive a knife as described above.

Another advantage of the invention will now be described, and this will be in connection with a variation of the invention which is herein called the second embodiment. As has been pointed out above, knives used in such machines wear out and either need to be reground, or new knives need to be inserted to replace the worn out ones. Where the knife material is relatively inexpensive (such as, for example, types D2, A7, A8 and other tool steels), then it may be more economical to throw away the old knives, rather than regrind them. If this is done, new knives must be substituted for the old ones. On the other hand, where the knives are made of tungsten carbide or similar material, the knives are relatively expensive, and they will be returned to the knife manufacturer for regrinding.

When knives are returned for regrinding and then reused, or when a new knife is to be used, both either must be dimensioned substantially exactly the same as the dimension of the initial knife 12 shown in FIG. 2, or expensive adjustments of the knives need to be made with respect to the rotary knives 4. Such adjustments are time-consuming and therefore expensive. This invention provides a way of treating a knife that has been reground (or sizing a new knife) so that when such a knife is fitted into the holder, it will come into place in respect to the rotary knives 4 exactly as was the original knife 12 when the latter was new. The following description will first apply to the case where a carbide knife is to be reground and then returned to the user for insertion in the machine.

Such a carbide knife 52 isshown in FIG. 7. After the knife has been reground, to the bottom 53 of the knife there is added such as by way of arc deposition or metal spraying a layer 54 of additional metal (illustrated by dotted lines in FIG. 7). After this layer has solidified and cooled, it is then cut off in a predimensioned jig to the level indicated by numeral 56, so that the span from the. point 58 of the knife and the level so prepared is equal to the dimension A. It'will be recalled that dimension A is the dimension that was originally established between the points 58 of the initial knife and its bottom, when the first knife was placed in this holder and ground.

In FIG. 7, for clarity, the thickness of the residual added layer of metal has been exaggerated, and generally will be much less than shown.

It is thus to be seen that by this invention, a user can always have on hand a set of blades which will always be self-positioning in the holder so as to be in proper cutting engagement with the rotary knives 4. A further advantage of the invention is that the knife is strongly backed up by the forward surface 30 of the holder over almost the entire width of the knife. This permits the use of an insertable knife which is smaller than would otherwise be the case.

In view of the above it will be seen that the several objects of the invention are achieved and other advantageous results attained.

It is to be understood that the invention is not limited in its application to the details of construction and arrangement of parts illustrated in the accompanying drawings, since the invention is capable of other embodiments and of being practiced or carried out in various ways. Also, it is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation.

As many changes could be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings, shall be interpreted as illustrative and not in a limiting sense, and it is also intended that the appended claims shall cover all such equivalent variations as come within the true spirit and scope of the invention.

Having described the invention, what is claimed is:

1. In combination, an elongated knife holder and a knife therefor for a cutting machine having rotary cutters with which the knife is adapted to cooperate, the holder having a top surface and a front surface and being provided with a channel therein to receive the knife; the channel having a bottom surface, a front wall and a back wall contiguous with said bottom surface, the front wall and the back wall being inclined away from each other at a predetermined angle, the front wall being at an obtuse angle to the planeof the bottom surface, and the back wall being at an acute angle to the plane of the bottom surface; a first portion of the bottom surface being approximately parallel to the top surface; a second portion of the bottom surface lying at an angle to the first portion of the bottom surface and sloping downwardly and toward the front surface of the holder; a knife lying in said channel with one side thereof against the front wall thereof, the other side of the knife facing toward the back wall, and the bottom surface of the knife seated against the second portion of the bottom surface of the channel; and a wedge removably and adjustably fastened into the channel between the knife and the back wall by fastening means and engaging the back wall and said other side of the knife thereby to hold the knife in the channel.

2. The combination of claim 1 in which the front surface of the holder terminates short of its top surface, and saidknife is so formed that when the latter is clamped in the holder, an upper forward edge portion thereof is exposed and lies adjacent the cutting path of said rotary knives.

3. The combination of claim 1 in which the angle of slope of the second portion of the bottom surface of the channel is the same as the angle that the bottom surface of the knife makes with the sides of the knife.

4. The combination of claim 3 in which the angle the bottom surface of the knife makes with the walls thereof is approximately 5. The combination of claim 1 in which the angle that the back wall of the channel makes with the plane of the bottom surface of the latter is approximately 60, and the angle the front wall of the channel makes with the plane of the bottom of the latter is approximately 6. The combination of claim 2 in which the upper forward edge portion of said knife is provided with first teeth and the front surface of the holder is provided with second teeth in alignment with said first teeth.

7. The combination of claim '6 in which the total width of said knife from its forwardmost cutting point to its bottom surface is such that when the knife is seated against the second bottom portion of the channel, the teeth of the knife and of the front surface of the holder are in alignment.

8. The combination of claim 7 in which the knife comprises a body and a layer of additional spacer material of predetermined thickness attached to the bottom surface of the body, the total width of the knife including the width of the knife per se and said predetermined thickness.

9. An elongated knife holder for a knife, the holder having a top surface and a front surface and being provided with a channel therein to receive a knife longitudinally; the channel having a bottom surface, a front wall and a back wall contiguous with said bottom surface, the front wall and the back wall being inclined away from each other at a predetermined angle, the

front wall being at an obtuse angle to the plane of the bottom surface, and the back wall being at an acute angle to the plane of the bottom surface; a first portion of the bottom surface being approximately parallel to the top surface; a second portion of the bottom surface lying at an angle to the first portion of the bottom surface and sloping downwardly toward said front surface; and a wedge adapted to be removably and adjustably fastened into the channel by fastening means and adapted to engage said back wall and one side of the knife when the latter is in the channel thereby to force the knife against the front wall of the channel.

10. The holder of claim 9 in which the front surface of the holder terminates short of the top surface of the latter.

, 11. The combination of claim 9 in which the angle of slope of the second portion of the bottom surface of the channel is the same as the angle that the bottom surface of the knife makes with the sides of the knife.

12. The combination of claim 9 in which the angle the back wall makes with the plane of the bottom surface is approximately 60, and the angle the front wall of the channel makes with the plane of the bottom surface is approximately 135.

* =i l #l

Claims (12)

1. In combination, an elongated knife holder and a knife therefor for a cutting machine having rotary cutters with which the knife is adapted to cooperate, the holder having a top surface and a front surface and being provided with a channel therein to receive the knife; the channel having a bottom surface, a front wall and a back wall contiguous with said bottom surface, the front wall and the back wall being inclined away from each other at a predetermined angle, the front wall being at an obtuse angle to the plane of the bottom surface, and the back wall being at an acute angle to the plane of the bottom surface; a first portion of the bottom surface being approximately parallel to the top surface; a second portion of the bottom surface lying at an angle to the first portion of the bottom surface and sloping downwardly and toward the front surface of the holder; a knife lying in said channel with one side thereof against the front wall thereof, the other side of the knife facing toward the back wall, and the bottom surface of the knife seated against the second portion of the bottom surface of the channel; and a wedge removably and adjustably fastened into the channel between the knife and the back wall by fastening means and engaging the back wall and said other side of the knife thereby to hold the knife in the channel.
2. The combination of claim 1 in which the front surface of the holder terminates short of its top surface, and said knife is so formed that when the latter is clamped in the holder, an upper forward edge portion thereof is exposed and lies adjacent the cutting path of said rotary knives.
3. The combination of claim 1 in which the angle of slope of the second portion of the bottom surface of the channel is the same as the angle that the bottom surface of the knife makes with the sides of the knife.
4. The combination of claim 3 in which the angle the bottom surface of the knife makes with the walls thereof is approximately 90*.
5. The combination of claim 1 in which the angle that the back wall of the channel makes with the plane of the bottom surface of the latter is approximately 60*, and the angle the front wall of the channel makes with the plane of the bottom of the latter is approximately 135*.
6. The combination of claim 2 in which the upper forward edge portion of said knife is provided with first teeth and the front surface of the holder is provided with second teeth in alignment with said first teeth.
7. The combination of claim 6 in which the total width of said knife from its forwardmost cutting point to its bottom surface is such that when the knife is seated against the second bottom portion of the channel, the teeth of the knife and of the front surface of the holder are in alignment.
8. The combination of claim 7 in which the knife comprises a body and a layer of additional spacer material of predetermined thickness attached to the bottom surface of the body, the total width of the knife including the width of the knife per se and said predetermined thickness.
9. An elongated knife holder for a knife, the holder having a top surface and a front surface and being provided with a channel therein to receive a knife longitudinally; the channel having a bottom surface, a front wall and a back wall contiguous with said bottom surface, the front wall and the back wall being inclined away from each other at a predetermined angle, the front wall being at an obtuse angle to the plane of the bottom surface, and the back wall being at an acute angle to the plane of the bottom surface; a first portion of the bottom surface being approximately parallel to the top surface; a second portion of the bottom surface lying at an angle to the first portion of the bottom surface and sloping downwardly toward said front surface; and a wedge adapted to be removably and adjustably fastened into the channel by fastening means and adapted to engage said back wall and one side of tHe knife when the latter is in the channel thereby to force the knife against the front wall of the channel.
10. The holder of claim 9 in which the front surface of the holder terminates short of the top surface of the latter.
11. The combination of claim 9 in which the angle of slope of the second portion of the bottom surface of the channel is the same as the angle that the bottom surface of the knife makes with the sides of the knife.
12. The combination of claim 9 in which the angle the back wall makes with the plane of the bottom surface is approximately 60*, and the angle the front wall of the channel makes with the plane of the bottom surface is approximately 135*.
US3779123A 1972-10-16 1972-10-16 Knife holder and knife therefor Expired - Lifetime US3779123A (en)

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BE (1) BE806006A (en)
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WO1999025523A1 (en) * 1997-11-17 1999-05-27 Urschel Laboratories Incorporated Knife and cutting wheel for a food product slicing apparatus
FR2782465A1 (en) * 1998-08-20 2000-02-25 Stephane Badot Extruded plastic granule cutter comprises rotary disc with blades fixed to supports detachably e.g. by screws
US6032884A (en) * 1998-02-26 2000-03-07 Ahlstrom Services Inc. Replaceable shear edge for a star-type feeder
WO2000071308A1 (en) * 1999-05-26 2000-11-30 Sds Usa, Inc. A rotary die board and method for manufacturing same
US20040198207A1 (en) * 2000-08-03 2004-10-07 Joachim Schill Blade mounting device
US20050035234A1 (en) * 2000-02-25 2005-02-17 Vermeer Manufacturing Company Rotary grinder apparatus and method
US20050034581A1 (en) * 2003-08-12 2005-02-17 Eugenio Bortone Method and apparatus for cutting a curly puff extrudate
US20050081696A1 (en) * 2003-10-20 2005-04-21 Western Printing Machinery Company Knife assembly for rotary cutting system
US20060075865A1 (en) * 2004-10-07 2006-04-13 Floding Daniel L Film cutter
WO2006062547A1 (en) 2004-12-07 2006-06-15 Columbus Mckinnon Corporation Tire size reduction/wire separation system
EP1719420A1 (en) * 2005-05-04 2006-11-08 Hauni Maschinenbau AG Counter-blade for a or each knife of a cutting means as well as device for cutting smokable material, as e.g. tobacco, tobacco ribs, tobacco sheet and/or cloves from a compressed bale
US20090121058A1 (en) * 2006-04-25 2009-05-14 Johann Doppstadt Comminution device
US20100101470A1 (en) * 2008-10-29 2010-04-29 Groz-Beckert Kg Tool for the manufacture of flat textiles
US20100270410A1 (en) * 2009-04-27 2010-10-28 SSI Shredding Sytems, Inc. Material Shredder including reverse-facing, pass-by-interlocking, rotor-cutter/bed-knife cutting edges
US20100282888A1 (en) * 2009-05-11 2010-11-11 Hartmut Pallmann Device for the workup of input material with a rotor-stator system
CN102431056A (en) * 2010-07-23 2012-05-02 P·皮埃雷 Improvement in or relating to cutting machine
US20140366695A1 (en) * 2013-06-12 2014-12-18 The Procter & Gamble Company Method of perforating a nonlinear line of weakness
US20140366702A1 (en) * 2013-06-12 2014-12-18 The Procter & Gamble Company Perforating apparatus for manufacturing a nonlinear line of weakness
US20140373501A1 (en) * 2013-06-21 2014-12-25 Deere & Company Crop processing and/or conveying element for a forage chopper
US20150013297A1 (en) * 2013-06-21 2015-01-15 Joshua D. Bacon Apparatus for supporting and or directing crop in a harvesting machine
US20170020066A1 (en) * 2015-02-24 2017-01-26 Gebrueder Busatis Gesellschaft M.B.H. Cutter bar
USD791206S1 (en) * 2015-07-31 2017-07-04 Zenith Cutter, Inc. Serrated male slot knife
USD791205S1 (en) * 2015-04-06 2017-07-04 Zenith Cutter, Inc. Serrated male slot knife
WO2018099517A1 (en) * 2016-11-30 2018-06-07 TKM GmbH Multipart long knife

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DK311783D0 (en) * 1983-07-06 1983-07-06 Laursens Maskinfabrik E Skaereapparat, especially for cutting of cable waste
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DE19505636A1 (en) * 1995-02-18 1996-08-22 Reinhold Zahn cutter bar
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Cited By (51)

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US3937377A (en) * 1974-10-11 1976-02-10 American/Durein Company Chopper for margins of multi-folded paper
US4090674A (en) * 1977-01-21 1978-05-23 Dow Badische Canada Limited Fixed cutting element
US4355766A (en) * 1977-04-20 1982-10-26 Wigand G Device for the destruction of microfilm and similar data carriers
US4155318A (en) * 1977-06-02 1979-05-22 Yoshio Yamamoto Looper for tufting machines
US4301701A (en) * 1979-02-08 1981-11-24 Winkler & Dunnebier Maschinenfabrik Und Eisengiesserei Gmbh & Co. Kg Rotary punch having a helically clamped abutment
US4261523A (en) * 1979-08-02 1981-04-14 Wanskuck Company Granulator
WO1981003284A1 (en) * 1980-05-23 1981-11-26 N Midgley Hand grip
US4476742A (en) * 1980-05-23 1984-10-16 Midgley Noel H Hand grip
US4422358A (en) * 1981-04-06 1983-12-27 The Standard Register Company Apparatus for cutting a continuous narrow strip into short sections
US4514165A (en) * 1982-07-22 1985-04-30 Bussey Harry Jun Apparatus for making billowed filling elements for packaging
US5454523A (en) * 1993-02-12 1995-10-03 Yazaki Corporation Elongate object cutting apparatus
US5445054A (en) * 1993-09-21 1995-08-29 R. J. Reynolds Tobacco Company Sheet cutting apparatus and method
EP0744367A2 (en) * 1995-05-26 1996-11-27 Voith Sulzer Papiermaschinen Gesellschaft mbH Apparatus for producing a perforated track in travelling web, e.g. a paper web
EP0744367A3 (en) * 1995-05-26 1998-05-27 Voith Sulzer Papiermaschinen Gesellschaft mbH Apparatus for producing a perforated track in travelling web, e.g. a paper web
US5829700A (en) * 1995-09-01 1998-11-03 Pianca; Luciano Contrast cutter, particularly for forage shredding machines
US5893314A (en) * 1996-04-10 1999-04-13 Western Printing Machinery Company Knife assembly for rotary cutting system
WO1999025523A1 (en) * 1997-11-17 1999-05-27 Urschel Laboratories Incorporated Knife and cutting wheel for a food product slicing apparatus
US6148709A (en) * 1997-11-17 2000-11-21 Urschel Laboratories Incorporated Knife and knife holder for a cutting wheel
US6032884A (en) * 1998-02-26 2000-03-07 Ahlstrom Services Inc. Replaceable shear edge for a star-type feeder
FR2782465A1 (en) * 1998-08-20 2000-02-25 Stephane Badot Extruded plastic granule cutter comprises rotary disc with blades fixed to supports detachably e.g. by screws
WO2000071308A1 (en) * 1999-05-26 2000-11-30 Sds Usa, Inc. A rotary die board and method for manufacturing same
US20050035234A1 (en) * 2000-02-25 2005-02-17 Vermeer Manufacturing Company Rotary grinder apparatus and method
US7213779B2 (en) * 2000-02-25 2007-05-08 Vermeer Manufacturing Company Rotary grinder apparatus and method
US20040198207A1 (en) * 2000-08-03 2004-10-07 Joachim Schill Blade mounting device
US7169034B2 (en) * 2000-08-03 2007-01-30 Maja-Maschinenfabrik Hermann Schill Gmbh & Co Blade mounting device
US20050034581A1 (en) * 2003-08-12 2005-02-17 Eugenio Bortone Method and apparatus for cutting a curly puff extrudate
US20080054513A1 (en) * 2003-08-12 2008-03-06 Eugenio Bortone Method and Apparatus for Cutting a Curly Puff Extrudate
US20050081696A1 (en) * 2003-10-20 2005-04-21 Western Printing Machinery Company Knife assembly for rotary cutting system
US7900542B2 (en) 2003-10-20 2011-03-08 Western Printing Machinery Company Knife assembly for rotary cutting system
US7849770B2 (en) * 2004-10-07 2010-12-14 Douglas Machine, Inc. Film cutter
US20060075865A1 (en) * 2004-10-07 2006-04-13 Floding Daniel L Film cutter
WO2006062547A1 (en) 2004-12-07 2006-06-15 Columbus Mckinnon Corporation Tire size reduction/wire separation system
EP1719420A1 (en) * 2005-05-04 2006-11-08 Hauni Maschinenbau AG Counter-blade for a or each knife of a cutting means as well as device for cutting smokable material, as e.g. tobacco, tobacco ribs, tobacco sheet and/or cloves from a compressed bale
US7909277B2 (en) * 2006-04-25 2011-03-22 Doppstadt Calbe Gmbh Comminution device
US20090121058A1 (en) * 2006-04-25 2009-05-14 Johann Doppstadt Comminution device
EP2182103A1 (en) * 2008-10-29 2010-05-05 Groz-Beckert KG Tool for manufacturing textile surfaces
US20100101470A1 (en) * 2008-10-29 2010-04-29 Groz-Beckert Kg Tool for the manufacture of flat textiles
US20100270410A1 (en) * 2009-04-27 2010-10-28 SSI Shredding Sytems, Inc. Material Shredder including reverse-facing, pass-by-interlocking, rotor-cutter/bed-knife cutting edges
US8333339B2 (en) * 2009-05-11 2012-12-18 Pallmann Maschinenfabrik Gmbh & Co. Kg Device for the workup of input material with a rotor-stator system
US20100282888A1 (en) * 2009-05-11 2010-11-11 Hartmut Pallmann Device for the workup of input material with a rotor-stator system
CN102431056A (en) * 2010-07-23 2012-05-02 P·皮埃雷 Improvement in or relating to cutting machine
US20140366702A1 (en) * 2013-06-12 2014-12-18 The Procter & Gamble Company Perforating apparatus for manufacturing a nonlinear line of weakness
US20140366695A1 (en) * 2013-06-12 2014-12-18 The Procter & Gamble Company Method of perforating a nonlinear line of weakness
US20140373501A1 (en) * 2013-06-21 2014-12-25 Deere & Company Crop processing and/or conveying element for a forage chopper
US20150013297A1 (en) * 2013-06-21 2015-01-15 Joshua D. Bacon Apparatus for supporting and or directing crop in a harvesting machine
US9675010B2 (en) * 2013-06-21 2017-06-13 Deere & Company Crop processing and/or conveying element for a forage chopper
US20170020066A1 (en) * 2015-02-24 2017-01-26 Gebrueder Busatis Gesellschaft M.B.H. Cutter bar
US9894833B2 (en) * 2015-02-24 2018-02-20 Gebrueder Busatis Gesellschaft M.B.H. Cutter bar
USD791205S1 (en) * 2015-04-06 2017-07-04 Zenith Cutter, Inc. Serrated male slot knife
USD791206S1 (en) * 2015-07-31 2017-07-04 Zenith Cutter, Inc. Serrated male slot knife
WO2018099517A1 (en) * 2016-11-30 2018-06-07 TKM GmbH Multipart long knife

Also Published As

Publication number Publication date Type
DE2349697A1 (en) 1974-04-18 application
GB1403825A (en) 1975-08-28 application
JPS4986938A (en) 1974-08-20 application
FR2203308A5 (en) 1974-05-10 application
BE806006A (en) 1974-04-12 grant
BE806006A1 (en) grant
CA989299A (en) 1976-05-18 grant
CA989299A1 (en) grant

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