US2831514A - Machine for slitting the bark of logs - Google Patents
Machine for slitting the bark of logs Download PDFInfo
- Publication number
- US2831514A US2831514A US642257A US64225757A US2831514A US 2831514 A US2831514 A US 2831514A US 642257 A US642257 A US 642257A US 64225757 A US64225757 A US 64225757A US 2831514 A US2831514 A US 2831514A
- Authority
- US
- United States
- Prior art keywords
- bark
- logs
- machine
- log
- slitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002023 wood Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B17/00—Chain saws; Equipment therefor
- B27B17/0016—Devices to adapt the chain saw for other purposes, e.g. drilling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/02—Circular saw blades
- B23D61/025—Details of saw blade body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
- B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
- B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
- B23Q35/10—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only
- B23Q35/101—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only with a pattern composed of one or more lines used simultaneously for one tool
- B23Q35/102—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only with a pattern composed of one or more lines used simultaneously for one tool of one line
- B23Q35/104—Means for transforming movement of the feeler or the like into feed movement of tool or work mechanically only with a pattern composed of one or more lines used simultaneously for one tool of one line with coaxial tool and feeler
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
- B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
- B27B5/32—Devices for securing circular saw blades to the saw spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B9/00—Portable power-driven circular saws for manual operation
- B27B9/02—Arrangements for adjusting the cutting depth or the amount of tilting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L1/00—Debarking or removing vestiges of branches from trees or logs; Machines therefor
- B27L1/06—Manually- operated or portable devices for debarking or for removing vestiges of branches
-
- 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
- Y10T83/02—Other than completely through work thickness
- Y10T83/0304—Grooving
-
- 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
- Y10T83/6633—By work moving flexible chain or conveyor
Definitions
- the present invention relates to a machine for slitting the bark of logs and, more particularly, to a machine of the character described for carrying out the method of debarking logs disclosed in applicants co-pending application Serial No. 642,258 of even date.
- the method is applicable for debarking pulp wood logs as well as logs for lumber and logs from dead trees.
- the main object of the present invention is the provision of a machine for carrying out the slitting operation ofthe logs in accordance with the above noted method.
- Another important object of the present invention is the provision of a portable machine of the character described which may be carried in the woods so as to effect the slitting operation as soon as possible after the trees have been felled.
- Still another object of the present invention is the provision of a machine of the character described more particularly adapted to be used in conjunction with a log conveyor system.
- Another important object of the present invention is the provision in a machine of the character described of means to positively limit the depth of cut in the bark so as to prevent damaging the wood.
- Figure 1 is a perspective view of a first embodiment of the machine according to the present invention.
- Figure 2 is a perspective view of a log being slit by a machine in accordance with a second embodiment of the present invention
- Figure 3 is a perspective view of the second embodiment
- Figure 4 is a cross-section of the cutting head provided with an outer sleeve, taken along line 4-4 of Figure 3;
- Figure 5 is a cross-section of a similar cutting head but without the outer sleeve
- Figure 6 is an'exploded perspective view of the outer sleeve, ball bearing element and internal sleeve which,
- Figure 7 is a partial plan view of a preferred form of a circular saw used in the machine according to the present invention.
- Figure 1 shows part of a conventional conveyor system, generally indicated by reference numeral 1, and having a conveyor chain 2 provided at spaced'intervals therealong with means (not shown) for engaging the trailing end of the logs in order to positively movej the same along the conveyor in the direction of arrow 3.
- Two upright members 4, disposed on each side of the conveyor 1, supportthereover a cross member 5 which is at such a height as to clear the logs L passing thereon the transverse mernber 5 and is pivoted on a driving shaft 7 which passes under.
- a gear box 6 is arranged therethrough and is journ alled therein.
- the driving shaft is supported on member 5 by brackets 7 to the driving shaft 7 by means of suitable gearing (not in the gearbox 6.
- the outer end of the tubular arm 12 is secured to a casing 13 and the transmission shaft enters said casing and is provided with a bevelled pinion 14 in meshing engagement with a bevelled pinion 15, the latter being secured to a transverse shaft 16 which is journalled in bearings 17 and 18 supported within the casing 13.
- the transverse shaft 16 has an enlarged portion 19 proectmg outwardly of the housing 13 and which is terminated by -a screwed portion 20 of reduced diameter for receiving a nut 21 and washer 22. Intermediate the portions 19 and 20 there is formed a triangularly shaped portion 23 for engaging a triangular opening 24 of a circular saw 25 which is secured in position by nut 21.
- the enlarged portion 19 is adapted to tightly fit within an inner sleeve member 26 having at its outer end a radially, outwardly projecting fiange 27 adapted to abut the circular saw 25.
- the sleeve 26 is adapted in turn to engage the inner ring 28' of. a ball bearing 28, the outer ring 28 of which is adapted to tightly fit an outer metal sleeve 30.
- the relative external diameters of the outer sleeve 30 and of the circular saw 25 are chosen in relation to the thickness of the bark B of the log L to be slit.
- the outer sleeve 30 is adapted to roll in frictional engagement with the outside surface of the bark of the log to be slit and will follow all the irregularities of said outer surface of the log, thereby providing for uniform depth of cut of the circular saw 25.
- the depth of cut is regulated so as to completely slit the bark but to only make a very sha1- low cut in the wood. This is easily accomplished due to the fact that, generally speaking, the bark of logs of a given tree species is substantially uniform in thickness.
- the saw 25 is chosen with teeth T of the type shown in Figure 7.
- the teeth T have a front edge T rearwardly and is rotated in the direction of arrow 7" by a suitable motor, such inclined from tip to root with respect to a radius passing through the tip.
- the gauge of the outer sleeve 30 is selected in accordance with the diameter of the circular saw chosen and the thickness of the bark. If a small circular saw 25 is used, as shown in Figure 4, the outer sleeve 30 may not here quired, in which case the outer ring 28 of the ball bearing 28 contacts the bark Bof the log L.
- the driving shaft 7, while rotating the saw-25 also tends to press said saw against the log, while allowing for irregularities in the outer surface of said log.
- the saw 25 will preferably rotate at a high speed'and the log L is moved longitudinally by the conveyor. Therefore, a straight slit 31 will be made by the saw 25 in the bark of the log L rnoving underneath the transverse frame 5.
- the swinging movement of the arm 12 will allow for variations of the diameter of the various logs successively slit by the saw 25.
- the arm 12'and cutting head C may be directly connected to a portable gasoline engine M which is preferably ofthe type used for. chain saws.
- a portable unit of this type allows logs L to be slit at the site where the trees are felled.
- An apparatus for making longitudinal slits in the'bark of logs comprising, in combination, a conveyor system for moving said logs axially in a predetermined path, a frame structure straddling and extending over said conveyor system so that said logs will pass underneath said structure, a driving shaft journalled on said structure, power means connected to said driving shaft, a gear box pivoted on said driving shaft and supported thereby, a tubular arm secured to said gear box for swinging movement in a plane passing substantially through the centre line of said conveyor system, a casing secured to the outer end of said arm, a transverse shaft journalled within said casing, said transverse shaft projecting.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Automation & Control Theory (AREA)
- Debarking, Splitting, And Disintegration Of Timber (AREA)
Description
April 22, 1958" P. AVARD MACHINE FOR SLITTING THE BARK OF LOGS 2 Shets-Sheet 1 Filed Feb. 25, 1957 INVENTOR Paul AVA RD AT TORMEYS' April 22, 1958 P, AVARDQ MACHINE FOR SLITTING THE BARK 0F LOGS Filed Feb. 25, 1957 2 Sheets-Sheet 2 INVENTOR Paul AVARD ATTORNEYS United States Patent-.0
MACHINE FOR SLITTIN G THE BARK F LOGS Paul Avard, Cap Rouge, Quebec, Canada Application February 25, 1957, Serial No. 642,257
1 Claim. (Cl. 144-436) The present invention relates to a machine for slitting the bark of logs and, more particularly, to a machine of the character described for carrying out the method of debarking logs disclosed in applicants co-pending application Serial No. 642,258 of even date.
In accordance with the invention described in the above noted co-pending patent application, it has been found that debarking of logs is greatly facilitated if the logs are slit along their entire length down to the wood. When such slits are made, the peripheral tensional stress normally existent in the bark causes the bark to contract peripherally of the log, thereby starting destruction of the bond existing between the bark and wood. Thereafter, when the logs are subjected to the action of atmospheric elements such as air, rain, ice and bacteria, the bark becomes practically completely detached from the wood of the log. This may be explained by the fact that water can penetrate through the slits and saturate the cork-like part between the bark proper and the wood and activate the disintegration of said cork-like part; thereafter air easily penetrates and facilitates the action of bacteria for further destroying the bond between the bark and the wood and also promotes the drying of the bark.
As mentioned in said aforesaid co-pending application, the method is applicable for debarking pulp wood logs as well as logs for lumber and logs from dead trees.
The main object of the present invention is the provision of a machine for carrying out the slitting operation ofthe logs in accordance with the above noted method.
Another important object of the present invention is the provision of a portable machine of the character described which may be carried in the woods so as to effect the slitting operation as soon as possible after the trees have been felled.
Still another object of the present invention is the provision of a machine of the character described more particularly adapted to be used in conjunction with a log conveyor system. 1
Another important object of the present invention is the provision in a machine of the character described of means to positively limit the depth of cut in the bark so as to prevent damaging the wood.
The foregoing and other important objects of the present invention will become more apparent during the following disclosure and by referring to the drawings in which:
Figure 1 is a perspective view of a first embodiment of the machine according to the present invention;
Figure 2 is a perspective view of a log being slit by a machine in accordance with a second embodiment of the present invention;
Figure 3 is a perspective view of the second embodiment;
Figure 4 is a cross-section of the cutting head provided with an outer sleeve, taken along line 4-4 of Figure 3;
Figure 5 is a cross-section of a similar cutting head but without the outer sleeve;
Figure 6 is an'exploded perspective view of the outer sleeve, ball bearing element and internal sleeve which,
are parts of the cutting head of Figure 4; and
Figure 7 is a partial plan view of a preferred form of a circular saw used in the machine according to the present invention.
Referring now more particularlyto the'drawings in,
which like reference characters indicate like elements throughout, Figure 1 shows part of a conventional conveyor system, generally indicated by reference numeral 1, and having a conveyor chain 2 provided at spaced'intervals therealong with means (not shown) for engaging the trailing end of the logs in order to positively movej the same along the conveyor in the direction of arrow 3. Two upright members 4, disposed on each side of the conveyor 1, supportthereover a cross member 5 which is at such a height as to clear the logs L passing thereon the transverse mernber 5 and is pivoted on a driving shaft 7 which passes under. A gear box 6 is arranged therethrough and is journ alled therein. The driving shaft is supported on member 5 by brackets 7 to the driving shaft 7 by means of suitable gearing (not in the gearbox 6. ,Pivotal movement of 7 shown) housed the gear box 6 about the driving shaft 7 will cause swinging movement of the arm 12 in a substantially vertical plane passing through the centre line of the conveyor chain 2. The arm 12 supports at its outer end a cutting head C provided with a circular saw 25.
Referring to Figures 4 to 6, the outer end of the tubular arm 12 is secured to a casing 13 and the transmission shaft enters said casing and is provided with a bevelled pinion 14 in meshing engagement with a bevelled pinion 15, the latter being secured to a transverse shaft 16 which is journalled in bearings 17 and 18 supported within the casing 13.
I The transverse shaft 16 has an enlarged portion 19 proectmg outwardly of the housing 13 and which is terminated by -a screwed portion 20 of reduced diameter for receiving a nut 21 and washer 22. Intermediate the portions 19 and 20 there is formed a triangularly shaped portion 23 for engaging a triangular opening 24 of a circular saw 25 which is secured in position by nut 21.
The enlarged portion 19 is adapted to tightly fit within an inner sleeve member 26 having at its outer end a radially, outwardly projecting fiange 27 adapted to abut the circular saw 25. The sleeve 26 is adapted in turn to engage the inner ring 28' of. a ball bearing 28, the outer ring 28 of which is adapted to tightly fit an outer metal sleeve 30.
The relative external diameters of the outer sleeve 30 and of the circular saw 25 are chosen in relation to the thickness of the bark B of the log L to be slit. The outer sleeve 30 is adapted to roll in frictional engagement with the outside surface of the bark of the log to be slit and will follow all the irregularities of said outer surface of the log, thereby providing for uniform depth of cut of the circular saw 25. The depth of cut is regulated so as to completely slit the bark but to only make a very sha1- low cut in the wood. This is easily accomplished due to the fact that, generally speaking, the bark of logs of a given tree species is substantially uniform in thickness.
In order to keep the fibers of the wood as intact as possible, the saw 25 is chosen with teeth T of the type shown in Figure 7. The teeth T have a front edge T rearwardly and is rotated in the direction of arrow 7" by a suitable motor, such inclined from tip to root with respect to a radius passing through the tip.
The gauge of the outer sleeve 30 is selected in accordance with the diameter of the circular saw chosen and the thickness of the bark. If a small circular saw 25 is used, as shown in Figure 4, the outer sleeve 30 may not here quired, in which case the outer ring 28 of the ball bearing 28 contacts the bark Bof the log L.
Referring to Figure l, the driving shaft 7, while rotating the saw-25, also tends to press said saw against the log, while allowing for irregularities in the outer surface of said log. The saw 25 will preferably rotate at a high speed'and the log L is moved longitudinally by the conveyor. Therefore, a straight slit 31 will be made by the saw 25 in the bark of the log L rnoving underneath the transverse frame 5. The swinging movement of the arm 12 will allow for variations of the diameter of the various logs successively slit by the saw 25.
According to another embodiment of the present invention, the arm 12'and cutting head C may be directly connected to a portable gasoline engine M which is preferably ofthe type used for. chain saws. A portable unit of this type allows logs L to be slit at the site where the trees are felled.
While preferred embodiments according'to the present invention have beenillustrated and described, it is under-' stood that various modifications may be resorted to without departing from the spirit and scope of the appended claim.
I claim: a
An apparatus for making longitudinal slits in the'bark of logs comprising, in combination, a conveyor system for moving said logs axially in a predetermined path, a frame structure straddling and extending over said conveyor system so that said logs will pass underneath said structure, a driving shaft journalled on said structure, power means connected to said driving shaft, a gear box pivoted on said driving shaft and supported thereby, a tubular arm secured to said gear box for swinging movement in a plane passing substantially through the centre line of said conveyor system, a casing secured to the outer end of said arm, a transverse shaft journalled within said casing, said transverse shaft projecting. from one end of said casing, means to secure a circular saw to said projecting end of said transverse shaft spacedly from said casing, an inner sleeve fitted on said shaft intermediate said casing and said saw and having a. radial flange abutting said circular saw, a ball bearing mounted on said inner sleeve, an outer sleeve mounted on the external ring of said ball bearing, the external diameter of said outer sleeve being less than the effective diameter of said circular saw so as to provide guiding means to regulate the depth of cut of said circularsaw, and power transmission means between said driving shaft and said transverse shaft.
References Cited in the file of this patent UNITED STATES PATENTS 442,657 Woodside ec. 16, 1890 704,373 Rawson July 8, 1902 938,135 Fellows Oct. 26, 1909 1,797,646 Gardner Mar. 24, 1931 2,478,807 Critchfield Aug. 9, 194-9 2,697,457 Lawrence Dec. 21, 1954 FOREIGN PATENTS v 36,840 Norway Feb. 19, 1923
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US642257A US2831514A (en) | 1957-02-25 | 1957-02-25 | Machine for slitting the bark of logs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US642257A US2831514A (en) | 1957-02-25 | 1957-02-25 | Machine for slitting the bark of logs |
Publications (1)
Publication Number | Publication Date |
---|---|
US2831514A true US2831514A (en) | 1958-04-22 |
Family
ID=24575845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US642257A Expired - Lifetime US2831514A (en) | 1957-02-25 | 1957-02-25 | Machine for slitting the bark of logs |
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US (1) | US2831514A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0413150A2 (en) * | 1989-08-12 | 1991-02-20 | ABG-WERKE GmbH | Milling depth display for a road milling machine |
US5423361A (en) * | 1994-06-15 | 1995-06-13 | Richards; Bruce A. | Debarker bit with fiber cutter |
US5603310A (en) * | 1992-04-03 | 1997-02-18 | Chiuminatta; Edward R. | Mounting arbor for saw cutting blades |
WO1999006195A1 (en) * | 1997-07-31 | 1999-02-11 | Bruno Pianu | Portable bark stripping machine, especially for cork |
WO1999041051A1 (en) * | 1998-02-13 | 1999-08-19 | Bruno Pianu | Portable sawing machine with an electronically controlled electrically adjustable foot, for stripping off bark, especially cork |
US6230600B1 (en) * | 1996-07-12 | 2001-05-15 | Precision Arbor Systems, Inc. | Saw arbor and guided circular saw |
US20050183562A1 (en) * | 2004-02-25 | 2005-08-25 | The Boeing Company | Depth limiting safeguard for channel machining |
US20080017006A1 (en) * | 2006-07-24 | 2008-01-24 | Michael Patrick Burke | Rotating blade arbor hole |
US20100122617A1 (en) * | 2008-11-18 | 2010-05-20 | Nec Electronics Corporation | Dicing machine and adapter for dicing machine |
WO2018229563A1 (en) * | 2017-06-12 | 2018-12-20 | Brevetti Montolit S.P.A. | Improved handheld motorized cutting device and relative accessory |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US442657A (en) * | 1890-12-16 | George w | ||
US704373A (en) * | 1902-01-15 | 1902-07-08 | Edward Rawson | Wood-fluting machine. |
US938135A (en) * | 1909-02-11 | 1909-10-26 | George V Fellows | Shaper-head. |
US1797646A (en) * | 1929-09-27 | 1931-03-24 | Stonewall J Gardner | Log-grooving saw |
US2478807A (en) * | 1945-08-27 | 1949-08-09 | Robert A Critchfield | Sawmill with swinging work cleaning auxiliary cutter |
US2697457A (en) * | 1952-07-23 | 1954-12-21 | Brushmaster Saw Inc | Manually portable brush cutting power tool |
-
1957
- 1957-02-25 US US642257A patent/US2831514A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US442657A (en) * | 1890-12-16 | George w | ||
US704373A (en) * | 1902-01-15 | 1902-07-08 | Edward Rawson | Wood-fluting machine. |
US938135A (en) * | 1909-02-11 | 1909-10-26 | George V Fellows | Shaper-head. |
US1797646A (en) * | 1929-09-27 | 1931-03-24 | Stonewall J Gardner | Log-grooving saw |
US2478807A (en) * | 1945-08-27 | 1949-08-09 | Robert A Critchfield | Sawmill with swinging work cleaning auxiliary cutter |
US2697457A (en) * | 1952-07-23 | 1954-12-21 | Brushmaster Saw Inc | Manually portable brush cutting power tool |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0413150A2 (en) * | 1989-08-12 | 1991-02-20 | ABG-WERKE GmbH | Milling depth display for a road milling machine |
EP0413150A3 (en) * | 1989-08-12 | 1991-09-25 | Abg-Werke Gmbh | Milling depth display for a road milling machine |
US5603310A (en) * | 1992-04-03 | 1997-02-18 | Chiuminatta; Edward R. | Mounting arbor for saw cutting blades |
US5660161A (en) * | 1992-04-03 | 1997-08-26 | Chiuminatta; Edward R. | Mounting arbor for saw cutting blades |
US5423361A (en) * | 1994-06-15 | 1995-06-13 | Richards; Bruce A. | Debarker bit with fiber cutter |
US6230600B1 (en) * | 1996-07-12 | 2001-05-15 | Precision Arbor Systems, Inc. | Saw arbor and guided circular saw |
WO1999006195A1 (en) * | 1997-07-31 | 1999-02-11 | Bruno Pianu | Portable bark stripping machine, especially for cork |
WO1999041051A1 (en) * | 1998-02-13 | 1999-08-19 | Bruno Pianu | Portable sawing machine with an electronically controlled electrically adjustable foot, for stripping off bark, especially cork |
US20050183562A1 (en) * | 2004-02-25 | 2005-08-25 | The Boeing Company | Depth limiting safeguard for channel machining |
US7156011B2 (en) * | 2004-02-25 | 2007-01-02 | The Boeing Company | Depth limiting safeguard for channel machining |
US20080017006A1 (en) * | 2006-07-24 | 2008-01-24 | Michael Patrick Burke | Rotating blade arbor hole |
US8549973B2 (en) | 2006-07-24 | 2013-10-08 | Michael Patrick Burke | Rotating blade arbor hole |
US20100122617A1 (en) * | 2008-11-18 | 2010-05-20 | Nec Electronics Corporation | Dicing machine and adapter for dicing machine |
WO2018229563A1 (en) * | 2017-06-12 | 2018-12-20 | Brevetti Montolit S.P.A. | Improved handheld motorized cutting device and relative accessory |
CN111225775A (en) * | 2017-06-12 | 2020-06-02 | 布雷韦蒂蒙托里特公司 | Improved hand-held motorized cutting device and related accessories |
CN111225775B (en) * | 2017-06-12 | 2021-07-13 | 布雷韦蒂蒙托里特公司 | Improved hand-held motorized cutting device and related accessories |
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