The present disclosure generally relates to woodworking planes.
Woodworking planes have long been used to smooth the wood surface of a work piece. Such planes work when a woodworker pushes or pulls the plane across the wood surface. This allows a sharp blade of the plane to engage the wood surface and shear off a thin layer of wood, thereby smoothing the wood surface. The plane usually includes a plane body or blade holder, and a plane blade slightly protruding through an opening in the bottom surface of the plane body.
The plane blade may occasionally need to be adjusted, either longitudinally to control a cutting or planing depth, or angularly to adjust an angle of the blade relative to a bottom surface of the plane body (the cutting edge is typically maintained desirably along a line that is parallel to the bottom surface of the plane). The present disclosure provides a plane with an improved construction for enabling longitudinal and/or lateral adjustment of the plane blade.
One aspect of the present disclosure provides a plane that includes a plane body, an angled support structure carried by the plane body, a blade supported by the angled support structure, a blade adjuster operatively connected with the blade, and a lateral stabilizer. The plane body has an opening positioned in a bottom surface of the plane body and the blade has an edge positionable to protrude from the opening. The blade adjuster longitudinally moves the blade so as to control a distance that the edge of the blade protrudes through the opening and laterally moves the blade so as to control an angle of the edge of the blade relative to the bottom surface of the plane body. The lateral stabilizer is selectively adjustable to prevent or permit a lateral movement of the blade. The lateral stabilizer is configured to prevent lateral movement of the blade without preventing longitudinal adjustability of the blade. When the lateral stabilizer is configured to prevent lateral movement of the blade, the lateral stabilizer does not engage the blade.
Another aspect of the present disclosure provides a plane that includes a plane body, an angled support structure carried by the plane body, a blade supported by the angled support structure, a blade adjuster operatively connected with the blade and a lateral stabilizer. The plane body having an opening positioned in a bottom surface of the plane body and the blade having an edge positionable to protrude from the opening. The blade adjuster longitudinally moves the blade so as to control a distance that the edge of the blade protrudes through the opening; and laterally moves the blade so as to control an angle of the edge of the blade relative to the bottom surface of the plane body. The lateral stabilizer is selectively adjustable to prevent or permit a lateral movement of the blade. The lateral stabilizer is configured to prevent lateral movement of the blade without preventing longitudinal adjustability of the blade. The lateral stabilizer includes a single adjustment structure which can be adjusted to prevent lateral movement of the blade.
Yet another aspect of the present disclosure provides a plane that includes a plane body, an angled support structure carried by the plane body, a blade supported by the angled support structure, a blade adjuster operatively connected with the blade and a lateral stabilizer. The plane body having an opening positioned in a bottom surface of the plane body and the blade having an edge positionable to protrude from the opening. The blade adjuster longitudinally moves the blade so as to control a distance that the edge of the blade protrudes through the opening; and laterally moves the blade so as to control an angle of the edge of the blade relative to the bottom surface of the plane body. The lateral stabilizer is selectively adjustable to prevent or permit a lateral movement of the blade. The lateral stabilizer is configured to prevent lateral movement of the blade without preventing longitudinal adjustability of the blade. The lateral stabilizer is adjustable to prevent any lateral movement of the blade without impacting ease of blade movement in the longitudinal direction.
These and other aspects of the present disclosure, as well as the methods of operation and functions of the related elements of structure and the combination of parts and economies of manufacture, will become more apparent upon consideration of the following description and the appended claims with reference to the accompanying drawings, all of which form a part of this specification, wherein like reference numerals designate corresponding parts in the various figures. In one embodiment of the present disclosure, the structural components illustrated can be considered are drawn to scale. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the present disclosure. It shall also be appreciated that the features of one embodiment disclosed herein can be used in other embodiments disclosed herein. As used in the specification and in the claims, the singular form of “a”, “an”, and “the” include plural referents unless the context clearly dictates otherwise.
The present disclosure is illustrated with drawings which represent one of the embodiment in which the present disclosure may be practiced. It is to be understood that the principles and features of the present disclosure may be embodied in variant embodiments incorporating changes and adaptations by those skilled in the art. Accordingly the present disclosure is not deemed limited to the exact construction shown. All modifications and equivalents are intended to be within the scope of the present disclosure. In the accompanying drawings:
Reference is now made at
In one embodiment of the present disclosure, the angled support structure 220 or the frog is a wedge shaped casting integrally and permanently attached to the plane body 210. The plane 200 further comprises a blade securing mechanism 280 for securing the blade 230 to the angled support structure 220. The blade securing mechanism 280 comprises a chip breaker 282, a lever cap 284 and a thumb set screw 286. During the plane operation, the lower end 283 of chip breaker 282 generically functions to separate and remove the chips and shavings dislodged by the action of the plane blade 230 upon the work piece. The separation is performed by the action of an inclined surface 235 of the chip breaker 282 firmly secured at a position proximal to the edge 232 of the plane blade. The chip breaker 282 is firmly secured on top of the blade 230 via a blade screw 288. The blade screw 288 engages a thread 278 cut in the body of the chip breaker 282 such that the bottom surface of the chip breaker and the top surface of the plane blade 230 mutually engage in close surface contact exhibiting strong friction forces that effectively inhibit or prevent any relative movement between the blade 230 and the chip breaker 282 when the pressure caused by tightening of the blade screw 288 is applied. The lever cap 284 is positioned on top of the chip breaker 282 in such manner to provide additional support and tension to the chip breaker 282 and plane blade 230 assembly in the proximity of the edge 232 of the plane blade. The thumb set screw 286 has a threaded shaft 299 that is threadedly engaged in a threaded hole 279 bored through the lever cap 284 for sandwiching the chip breaker 282, and plane blade 230 assembly to the angled support structure 220. The thumb set screw 286 functions to adjust a friction force applied to the chip breaker 282 wherein a magnitude of the friction force determines how much rotational force must be applied to rotate knob 246 for making longitudinal depth adjustment to blade 230. Thus, set screw 286 is also referred to as a blade tensioner. The lever cap 284 is firmly attached to the angled support structure 220 and secured by tightening of a lever cap screw 244, which has a narrowed diameter threaded portion 450 received by a threaded bore 378 in the support structure 220. By tightening the thumb set screw 286, a tip end 289 of the thumb set screw 286 presses against the chip breaker 282 and, therefore, the blade 230 is additionally secured in its position by the frictional engagement between the bottom surface 233 of the plane blade 230 and the upper surface 231 of the angled support surface 220, as previously adjusted by the woodworker longitudinally and/or laterally.
The threaded adjustment rod 241 is generally positioned underneath the plane blade 230 (as shown in
In a different embodiment, the threaded adjustment rod 241 comprises only one threaded section threaded with a right-handed helicity thread disposed to engage the corresponding threaded bore 346 in the pivot bushing 242. The lateral adjustment bushing 243 is connected closer to the distal end of the adjustment rod 241 opposite from the adjustment knob 246, using a connector that allows for free rotation of the threaded adjustment rod 241 relative to the lateral adjustment bushing 243, but not any relative translation of the bushing 243 along the rod 241. In this embodiment, the translation of the rod 241 caused by the rotation of the knob 246 will transport the bushing 243 in the desired direction along the axis 347. For example, rotation of the adjustment knob 246 in a counter-clockwise direction (as observed from the adjustment knob end of the threaded adjustment rod 241) will cause the threaded adjustment rod 241 to travel in the longitudinal direction 262 through the pivot bushing 242 pulling the lateral adjustment bushing 243 away from the opening 212.
In yet another embodiment, the threaded adjustment rod 241 includes only one threaded section, threaded with a left-handed helicity thread, disposed to engage an appropriate threaded hole 348 in the lateral adjustment bushing 243, while the threaded adjustment rod is arranged to include a connector that allows for free rotation of the threaded adjustment rod 241 relative to the pivot bushing 242, but not any relative translation of the pivot bushing 242 along the rod 241. In such embodiment, the rotation of the knob 246 will transport the lateral adjustment bushing 243 in the desired direction along the axis 347. For example, rotation of the adjustment knob 246 in a clockwise direction (as observed from the adjustment knob end of the threaded adjustment rod 241) will cause the lateral adjustment bushing 243 to travel toward the opening 212 along the threaded adjustment rod 241, which does not translate relative to the pivot bushing 242.
It should be noted that embodiments employing different threads with helicities different from those disclosed above are also possible and considered to be different embodiments of the present disclosure.
To facilitate the longitudinal and/or lateral adjustment of the blade via the blade adjuster 240, the blade 230 also comprises the first engagement slot 234 and the second engagement slot 236 as shown in
When only longitudinal adjustments of the depth of protrusion of the plane blade edge 232 through the opening 212 is required or desired in some embodiments of the present disclosure, the woodworker who intends to use the plane 200 needs only to rotate the adjustment knob 246 of the threaded adjustment rod 241 around the axis 347. This rotation will cause controlled longitudinal motion of chip breaker 282—plane blade 230 assembly sufficient to achieve the desired longitudinal adjustments, while the tightened lateral stabilizer 250 prevents lateral blade edge movement. In other embodiments, the woodworker may want to release, at least in part, the pressure on the chip breaker 282—plane blade 230 assembly, most conveniently by appropriate relaxation of the tension applied to the thumb set screw 286, before the required or desired longitudinal adjustments of the depth of protrusion of the plane blade edge 232 through the opening 212, in order to allow for sufficiently smooth longitudinal motion of chip breaker 282—plane blade 230 assemblies driven by the rotation of the adjustment knob 246.
When the woodworker desires or requires adjustments that include modifications of the angle of the edge 232 of the plane blade 230 with respect to the bottom surface of the plane body 210, the woodworker releases tension on the lateral stabilizer 250 by loosening lock screw assembly 252 to allow for rotation of the pivot bushing 242 around the axis 266. Specifically, counter-clockwise movement of the knob 372 loosens the threaded engagement between shaft 371 and pivot bushing 242 to relieve fictional engagement between pivot bushing rear surface 391 and a butting surface of the support structure 220. Subsequent actuation of the adjustment knob 246 of the threaded adjustment rod 241 in the lateral direction 264 causes the plane blade to move laterally or “tilt” the angle with respect to the bottom surface 214 of the plane body 210. More specifically, when the woodworker laterally actuates the adjustment knob 246 in a direction 264, the pivot bushing 242 is pivoted around the axis 266. This causes the lateral adjustment bushing 243 and the engagement pin 247 thereon to move laterally in a direction 268. The engagement pin 247 further actuates the chip breaker 282, firmly attached to the plane blade 230, to move laterally in the direction 268 and pivot around the axis 370. Because the lever cap bushing 245 of the lever cap pivot assembly 249 is in sliding contact with the second engagement slot 236 and provides a well defined axis of rotation 272 for the plane blade 230, the plane blade 230 can pivot around the axis 272 of the lever cap screw 244. Consequently, a lower portion of the plane blade 230, carrying the edge 232, can simultaneously move laterally in a direction 274 and rotate with respect to the axis 272. In this way, the woodworker can adjust the angle or tilt of the edge 232 of the plane blade 230 relative to the bottom surface 214 of the plane body 210. When the desired or required angle of the edge 232 is achieved, the woodworker needs only to apply tension on the lock screw assembly 252 and lock the pivot bushing 242 preventing any further rotation or pivoting lateral motion. Any subsequent longitudinal adjustment can be performed, as disclosed above, without further need to repeat lateral adjustments iteratively.
It should also be appreciated that, if desired, the thumb set screw 286 and lateral stabilizer 250 can both be sufficiently loose to facilitate both longitudinal and lateral adjustment of the blade 230.
It should be appreciated that the terms lateral and arcuate movement of the blade (and lateral adjustment bushing 243) are used interchangeably herein, since the amount of movement is slight.
Although the present disclosure has been described in detail for the purpose of illustration, it is to be understood that such detail is solely for that purpose and that the present disclosure is not limited to the disclosed embodiments, but, on the contrary, is intended to cover modifications and equivalent arrangements that are within the spirit and scope of the appended claims. In addition, it is to be understood that the present disclosure contemplates that, to the extent possible, one or more features of any embodiment can be combined with one or more features of any other embodiment.
This application is a divisional application of U.S. patent application Ser. No. 11/984,061, filed Nov. 13, 2007, now U.S. Pat. No. 7,937,842, the entire content of which is incorporated herein by reference.
Number | Name | Date | Kind |
---|---|---|---|
306877 | Traut | Oct 1884 | A |
311136 | Mead | Jan 1885 | A |
421850 | Barker | Feb 1890 | A |
423424 | Frisbie | Mar 1890 | A |
516413 | Traut | Mar 1894 | A |
556835 | Smith | Mar 1896 | A |
680055 | Marks | Aug 1901 | A |
749827 | Sjolander | Jan 1904 | A |
763721 | Carleton et al. | Jun 1904 | A |
831153 | Glans | Sep 1906 | A |
1090225 | Page | Mar 1914 | A |
1417857 | Pfeiffer | May 1922 | A |
1439207 | Vaughan | Dec 1922 | A |
1459206 | Hardinge | Jun 1923 | A |
1510295 | Brander et al. | Sep 1924 | A |
1553937 | Fine | Sep 1925 | A |
1696584 | Schwer | Dec 1928 | A |
1726124 | Rodionoff | Aug 1929 | A |
1823383 | Weller et al. | Sep 1931 | A |
2423713 | Lavietes | Jul 1947 | A |
2839109 | Wilson et al. | Jun 1958 | A |
3028892 | Filia | Apr 1962 | A |
3120250 | Dakin | Feb 1964 | A |
4015649 | Gilbert | Apr 1977 | A |
4088165 | Andersson | May 1978 | A |
4498513 | Derivaz | Feb 1985 | A |
4589209 | Zarges et al. | May 1986 | A |
5694696 | Lee et al. | Dec 1997 | A |
6615497 | Saunders et al. | Sep 2003 | B1 |
7117602 | Saunders | Oct 2006 | B2 |
7377044 | Economaki | May 2008 | B2 |
7444750 | Saunders | Nov 2008 | B2 |
7530173 | Economaki | May 2009 | B2 |
7603783 | Lee et al. | Oct 2009 | B2 |
7937842 | Vanderbeek et al. | May 2011 | B2 |
20050060897 | Saunders | Mar 2005 | A1 |
20050188553 | Lee et al. | Sep 2005 | A1 |
20050229409 | Lee et al. | Oct 2005 | A1 |
20060101653 | Economaki | May 2006 | A1 |
20070044328 | Economaki | Mar 2007 | A1 |
20090119936 | Vanderbeek et al. | May 2009 | A1 |
Number | Date | Country |
---|---|---|
334740 | Dec 1958 | CH |
36 05 894 | Aug 1987 | DE |
191311526 | Jul 1913 | GB |
861363 | Feb 1961 | GB |
2 000 714 | Jan 1979 | GB |
Entry |
---|
Extended Search Report as issued for European Patent Application No. 08168808.7, dated Oct. 6, 2011. |
Number | Date | Country | |
---|---|---|---|
20110146088 A1 | Jun 2011 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 11984061 | Nov 2007 | US |
Child | 13041690 | US |