The present invention relates, generally, to a device for splitting logs and, more particularly, to log splitter having a removable wedge knife.
Conventional log splitters include a platform for receiving a log to be split, a cutting wedge, and a powered mechanism configured to urge the wedge against and into the log to thereby split the log. In presently known log splitters, the wedge is welded to a base plate or otherwise immovably secured to the log splitter chassis, rendering it impractical to remove the wedge for sharpening.
U.S. Patent Publication 2013/0000785 A1 published Jan. 3, 2013 describes a log splitter having a safety release member operable by a first hand of a user, and a splitter activation member operable by a second hand of the user, such that simultaneous operation of both the safety release member and the splitter activation member are required to enable operation of the log splitter. However, the safety release member and the splitter activation member are separated from each other by a significant distance to prevent one-handed operation of both the safety release member and the splitter activation member. This disadvantageous in that it can be cumbersome and physically taxing for the user.
Log splitters capable of operating in both a horizontal and vertical orientation are available from Iron & Oak located in Rogers, Minn. However, many presently known dual orientation log splitters are not well suited for bumpy or otherwise uneven terrain.
Finally, existing tractor drawn log splitters are subject to tipping when turning corners while being transported, in part due to weight shifting of the fluid within the tank which supplies the hydraulic actuator.
Systems and methods are thus needed which overcome the foregoing and other limitations of the prior art.
Various additional features and characteristics will also become apparent from the subsequent detailed description and the appended claims, taken in conjunction with the accompanying drawings and this background section.
Various embodiments of the present invention disclose a log splitter having a wedge mounting configuration which allows the wedge to be removed and replaced to facilitate re-sharpening ex situ. Various embodiments of the log splitter include a two factor safety system, which may be implemented as a two handed operation to reduce the likelihood of inadvertent operation, without unnecessarily taxing the operator. The log splitter may be configured for adjustable positioning of the main I-beam to accommodate differing ground levels when the splitter is used in the vertical orientation. Other embodiments contemplate a baffled hydraulic fluid tank to reduce instability while transporting the log splitter.
Various embodiments provide a wedge mounting bracket, which includes a mounting plate and a female slot into which a corresponding male adapter of the wedge is received. In particular, a replaceable wedge includes a knife edge/male adapter assembly configured to be slideably received within the female slot of the mounting bracket. A through hole in the wedge is configured to align with a corresponding through hole in the mounting bracket to releasably secure the wedge within the mounting bracket using a nut and bolt assembly during use. In this way, the wedge may be conveniently removed from the log splitter for sharpening, without having to remove the load bearing mounting hardware.
Various other embodiments, aspects, and features are described in greater detail below.
Exemplary embodiments will hereinafter be described in conjunction with the following drawing figures, wherein like numerals denote like elements, and:
The following detailed description of various embodiments of the invention is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the following detailed description.
Various embodiments of the present invention relate to a log splitter which overcomes many of the drawbacks of presently known log splitters. In accordance with various embodiments, a mobile chassis supports a log splitter having a wedge configured to be easily removed and replaced to allow the user to re-sharpen the wedge, as needed. The present invention also provides for two-handed operation to reduce the likelihood of inadvertent activation of the splitting mechanism, without requiring the user to reach across a large distance. The log splitter further provides a slotted pivot mechanism for manually adjusting the log splitter between vertical and horizontal operational modes. In accordance with a further aspect of the present invention, a baffled fluid (e.g., oil) tank reduces instability during transport.
Referring now to
A two factor safety system includes a primary actuator 128 and a secondary safety actuator 130. When the operator simultaneously actuates both levers, high pressure fluid is supplied through a first conduit (e.g., hose) 124 to cause an internal piston (not shown for clarity) to extend the wedge 121 into the log (e.g., from left-to-right in
Referring now to
The two factor safety feature of the invention will now be described in conjunction with
With reference to
Referring now to
After releasing the pin 1202, the operator rotates the log splitter about the pivot mechanism 115 along the direction of the arrow 1500, as shown in
More particularly and referring now to
It should be noted that the various inventions described herein, while illustrated in the context of a nine cylinder engine, are not so limited. Those skilled in the art will appreciate that the systems and methods described herein may contemplate any number of cylinders.
Various embodiments provide a log splitter comprising: a wedge mounting bracket comprising a mounting plate and a female slot; a removeable wedge comprising a knife edge and a male adapter configured to be slideably received within the female slot of the wedge mounting bracket; a mounting bracket through hole; a wedge through hole configured to align with the mounting bracket through hole when the male adapter is positioned in the female slot of the wedge mounting bracket; and a fastener configured to releasably extend through the wedge through hole and the mounting bracket through hole, and configured to releasably secure the removable wedge in the wedge mounting bracket.
In an embodiment the log splitter further includes: a chassis; an I-beam positioned along a central longitudinal axis of the chassis, and comprising the wedge mounting bracket on a top surface of the I-beam; a slotted pivot mechanism configured to couple a bottom surface of the I-beam to the chassis, and for rotation of the I-beam between a horizontal mode and a vertical mode; an end plate coupled orthogonally to the I-beam on an end distal to the wedge mounting bracket; and a hydraulic piston coupled to the wedge mounting bracket and configured to drive the wedge toward the end plate.
In an embodiment the log splitter includes: a pair of wheels coupled to the chassis; a trailer tongue coupled to the chassis on an end distal to the slotted pivot mechanism; and a stand coupled to the chassis and configured to support the chassis in a substantially horizontal position.
In an embodiment a slotted pivot mechanism can be configured to allow the I-beam to move up or down to maintain a stable position in the vertical mode on an uneven surface.
In an embodiment the log splitter further includes: a hydraulic fluid tank configured to hold hydraulic fluid; a power plant mounted to the chassis and configured to move a portion of the hydraulic fluid from the hydraulic fluid tank and to pressurize the portion of the hydraulic fluid in the hydraulic piston; and at least one baffle configured to reduce transverse movement of the hydraulic fluid in the hydraulic fluid tank.
In an embodiment the log splitter further includes: a release assembly comprising an assembly through hole in at least one flange coupled to the bottom surface of the I-beam; a chassis through hole configured to align with the assembly through hole when the I-beam is in the horizontal mode; and a pin configured to releasably extend through the chassis through hole and the assembly through hole, and to releasably secure the I-beam in the horizontal mode.
In an embodiment the log splitter includes a log platform coupled to the I-beam between the end plate and the wedge mounting bracket, and configured to accept a log when the I-beam is in the vertical position or in the horizontal position.
In an embodiment the I-beam is substantially parallel to the chassis in the horizontal mode and the I-beam is substantially orthogonal to the chassis in the vertical mode.
Various embodiments provide a log splitter comprising: a trailer comprising a chassis having a central longitudinal axis, at least one pair of wheels coupled to the chassis along a lateral axis, a hitch tongue mounted on an end of the chassis along the central longitudinal axis, and a stand coupled to the chassis; an I-beam pivotally coupled to the chassis on an end distal to the hitch tongue and along the central longitudinal axis; an end stop coupled to an end of the I-beam; a hydraulic system configured to move a wedge toward the end stop; and a two factor activation system comprising a primary actuator and a secondary actuator, and configured to activate the hydraulic system upon actuation of both the primary actuator and the secondary actuator.
In an embodiment the log splitter includes a wedge mounting bracket comprising a mounting plate and a female slot, the wedge mounting bracket mounted on a top surface of the beam; and the wedge comprises a knife edge and a male adapter configured to be slideably received within the female slot of the wedge mounting bracket.
In an embodiment the log splitter further includes: a mounting bracket through hole; a wedge through hole configured to align with the mounting bracket through hole when the male adapter is positioned in the female slot of the wedge mounting bracket; and a fastener configured to releasably extend through the wedge through hole and the mounting bracket through hole, and configured to releasably secure the removable wedge in the wedge mounting bracket.
In an embodiment the log splitter further includes a hard stop mounted on the wedge mounting bracket, and configured to remove a log from the wedge as the hydraulic system returns the wedge to a starting position.
In an embodiment the hydraulic system includes a hydraulic fluid tank having at least one internal baffle configured to reduce transverse movement of hydraulic fluid in the tank, for example, during a sharp turn while the log splitter is being transported.
In some embodiments, the primary actuator is configured to be actuated before the secondary actuator can be actuated.
In some embodiments, the primary actuator comprises a primary handle and the secondary actuator comprises a secondary handle; the primary actuator and the secondary actuator are positioned proximate the wedge mounting bracket; and the primary handle extends through a front portion of the wedge mounting bracket and the secondary extends through a side portion of the wedge mounting bracket.
Various embodiments provide a method of using a log splitter comprising the steps of: providing a log splitter comprising: a chassis; an I-beam positioned along a central longitudinal axis of the chassis; a slotted pivot mechanism configured to couple a bottom surface of the I-beam to the chassis, and to rotate of the I-beam between a horizontal mode and a vertical mode; a wedge mounting bracket mounted in a top surface of the I-beam and comprising a mounting plate and a female slot; a removeable wedge comprising a knife edge and a male adapter configured to be slideably received within the female slot of the wedge mounting bracket; a mounting bracket through hole; a wedge through hole configured to align with the mounting bracket through hole when the male adapter is positioned in the female slot of the wedge mounting bracket; a fastener configured to releasably extend through the wedge through hole and the mounting bracket through hole, and configured to releasably secure the removable wedge in the wedge mounting bracket; an end plate coupled orthogonally to the I-beam on an end distal to the wedge mounting bracket; and a hydraulic piston coupled to the wedge mounting bracket and configured to drive the wedge toward the end plate; positioning a log on the end plate; driving the wedge toward the end plate; and splitting the log with wedge.
In an embodiment the method further includes: removing the fastener from the wedge through hole and the mounting bracket through hole; and releasing the removable wedge from the wedge mounting bracket.
In an embodiment the method further includes: rotating the I-beam to a vertical mode; and positioning the end plate on a surface.
In an embodiment the method further includes: moving the I-beam up or down in the slotted pivot mechanism; and stabilizing the I-beam in the vertical mode on an uneven surface.
In an embodiment the method further includes: operating a two-handed safety system comprising a primary actuator and a secondary actuator; simultaneously actuating both the primary actuator and the secondary actuator; and activating the hydraulic piston.
As used herein, the word “exemplary” means “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other implementations, nor is it intended to be construed as a model that must be literally duplicated.
While the foregoing detailed description will provide those skilled in the art with a convenient road map for implementing various embodiments of the invention, it should be appreciated that the particular embodiments described above are only examples, and are not intended to limit the scope, applicability, or configuration of the invention in any way. To the contrary, various changes may be made in the function and arrangement of elements described without departing from the scope of the invention.
This application claims the benefit of and priority to U.S. Provisional Patent Application Ser. No. 62/573,884, filed Oct. 18, 2017, and entitled “Log Splitter”, the entire disclosure of which is hereby incorporated by reference.
Number | Date | Country | |
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62573884 | Oct 2017 | US |