JPS58151203A - Tool for splitting wood - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wood splitting tool and, more particularly, to a wood splitting tool that increases the efficiency of the wood splitting tool and allows the wood to be split at the throat of logs of various types and diameters with minimal force. The present invention relates to an improved wood splitting tool incorporating an improved wedge device that makes it possible. Various types of equipment have been provided for splitting wood.

The object of the present invention is to solve the problems of conventional wood splitting tools, which are adapted to engage the pieces of wood to be split one after the other and to split wood of various types and sizes with a minimum of force. An object of the present invention is to provide an improved wood splitting tool incorporating an improved multi-wedge device that makes it possible to do so.

Another object of the present invention is an improved wood splitting tool which can be used to split wood by applying manual force to the tool, such as a large mirror, or An improvement that can be incorporated as a splitting head in a hydraulic, pneumatic or mechanical device for applying force, or can be provided with handle means to facilitate the application of manual force to a wood splitting tool. The object of the present invention is to provide a tool for splitting wood.

Another object of the present invention is to provide an improved single-wood splitting tool that is relatively simple in construction, inexpensive to manufacture, and durable, efficient, and reliable in operation.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 5H of the drawings, a wood splitting tool according to a first embodiment of the present invention is indicated as a whole by the reference numeral 10, and the wood splitting tool 10 has a solid elongated body portion that is not hollow. 12, the body portion 12 is wedge-shaped and has a pair of substantially parallel end faces 14 and 16 spaced apart from each other, the end faces 14,
16 each has a generally isosceles triangular shape. The body portion 12 also has generally rectangular side surfaces 18 and 20 that are angled in opposite angular relation to each other and a generally rectangular top surface 22. The sides 18 and 20, which are angled in opposite angular relation to each other, are sloped toward each other and have relatively sharp edges 24 at the apexes of the isosceles triangular end faces 14 and 16 of the body portion 12. is formed.

Solid side portions 26 and 2 offset relative to each other in the longitudinal direction
8 may be formed separately from the main body portion 12 and fixed to the main body portion by welding or other means, or as in the case where the wood splitting tool 10 is formed from a piece of material by forging, It may be formed integrally with the main body portion 12. Each of the side portions 26 and 28 has generally obtuse triangular shaped end surfaces 30 and 32 that are generally parallel to each other and spaced apart.
have. Side portions 26 and 28 have side surfaces 34 and 36, respectively, which are inclined in opposite angular relation to each other;
It has rectangular top surfaces 38 and 40.

As shown, the side portions 26 and 28 are angled in opposite angular relation to each other of the body portion 12 midway between, or approximately equally spaced from, the end surfaces 14 and 16 of the body portion 12. are arranged on the curved sides 18 and 20, respectively. The side portions 26 are longitudinally offset on the body portion 12 with respect to the side portions 28 such that the apex 42 of the side portions 26 is located below the apex 44 of the side portions 28, as shown in FIG. It is now possible to do so.

In this first embodiment of the invention, sides 18 and 2 of body portion 12 are inclined in opposite angular relation to each other.
Each of the 0's is placed at an angle of approximately 4 degrees to the vertical. That is, the angle of inclination between sides 18 and 20 is approximately 8 degrees. In a first embodiment of the invention, the oppositely angled sides 1134 and 36 of side portions 26 and 28 are each disposed at an angle of about 18 degrees with respect to the vertical. has been done. Accordingly, the angle of inclination between the angled side surface 18 of the body portion 12 and the angled side surface 34 of the side portion 26 is approximately 14 degrees;
0 and the inclined side surface 36 of the side part 28 is also approximately 1
It is 4 degrees. Each inclined side surface 3 of side portions 26 and 2B
4 and 36 are the widths of the inclined sides 18 and 20 of the body portion 12.
It is about 115 of Nobata. For example, sloped sides 34 and 36
The width (distance between end surfaces 30 and 32) of the inclined side surfaces 18 and 20 (distance between end surfaces 14 and 16) is approximately 5.08.
For ugliness (2 inches), it may be about 1.905α ('', 74 inches).

Preferably, body portion 12 and side portions 26 and 28 are constructed of steel or other suitable material having sufficient strength to withstand the forces applied thereto, and as previously discussed. Main body part 12 and side part 2
6 and 28 may be formed as separate parts and the parts may be welded or otherwise secured together to form a unitary structure, or they may be formed integrally from a single piece of material by forging or other forming means. It's okay.

In use, the wood splitting tool 10 is initially positioned such that the edge 24 of the tool can be placed against one end of a piece of wood, such as a log 45, to be split.

Next, by applying a thick and thin impact to the end surface 22 of the main body portion 12, or by using a hydraulic, pneumatic or mechanical device to apply a force in the longitudinal direction of the wood splitting tool 10. By applying an appropriate force to the wood splitting tool 10, the wood splitting tool i&10
drive into the wood.

As the wood splitting tool 10 is gradually driven into the wood, the oppositely angled sides 18 and 20 of the body portion 12 make it relatively easy to cut into the wood. Split the wood at an 8 degree wedge angle. When the wood splitting tool 10 is further gradually driven into the wood, the side portion 2
The apex 42 of 6 bites into the wood, thereby increasing the wedge angle. At the same time, the area of the wedge surface of the tool that engages the wood is rapidly reduced. After that, the side part 28
The apex of the tool bites into the wood, causing the wedge angle to increase again, and at the same time, the area of the tool that engages with the wood rapidly decreases. This rapid reduction in the retention area is due to the fact that the areas of the sides 34 and 36 of the side portions 26 and 28 are smaller than the area of the side surfaces 34 and 36 of the side portions 26 and 28.
This is because it is much smaller than B and 20.

It has been found that the wood splitting tool 10 can be easily and quickly driven into wood of various types and diameters to split wood, such as logs, with minimal force. Furthermore, with a construction as described above, the tool 10 can be driven completely through the length of the log. The reason is that the side parts 26 and 28 cause the wood to
is forced outwardly beyond the upper portions of the sides 18 and 20 of the body portion 12 so that the head of a large mirror or other force applying device can engage the top surface 22 of the body portion 12.

In other words, the body portion 1 is
2, so that when the tool 10 is driven through the length of the log during the splitting operation, the tool 1
Even if the zero is completely within the log, the head of a large mirror or other force applying device can engage the top surface of the body portion 12. In addition, in the structure described above, the side portion 2
6 and 28 are made as separate units, and the separate units are then welded or otherwise secured to the body portion 12 in the manner described above, the side portions 26 and 28 may be made in the same piece. Tool 10
It is possible to reduce manufacturing costs.

6-9, a wood splitting tool according to a second embodiment of the present invention is shown generally at 110, and includes a generally wedge-shaped elongated solid body portion 112.
The body portion 112 has a pair of end surfaces 114 and 116 that are angled in opposite angular relationships and spaced apart from each other.
16 is generally in the shape of an isosceles triangle, and the end surfaces 114 and 116 are sloped downwardly and outwardly away from each other. The main body portion 112 also includes:
It has a pair of generally trapezoidal side surfaces 118 and 120 angled in opposite angular relation to each other and an integral generally cylindrical head portion 121, the head portion 121 having a convex shape. , that is, a circular top surface 1 with a crown
Ending at 22 and adjacent the top surface 122, the head portion 121 is preferably provided with a chamfer 123. The oppositely angled sides 11B and 120 are angled downwardly toward each other and have relatively sharp edges 124 at the vertices of the isosceles triangular end faces 114 and 116 of the body portion 112.
sharpened to form a

A pair of solid side portions 126 that are longitudinally offset from each other.
and 128, the side portions 126 and 128 may be made as separate pieces and secured to the body portion 112 by welding or other means, or the wood splitting tool 110 may be made from a single piece of material. It may be formed integrally with the main body portion 112, as in the case of forging. Each of the side portions 126 and 128 has generally parallel, spaced apart end surfaces 130 and 132 having a generally obtuse triangular shape. Side portions 126 and 128 also have oppositely angled sides 134 and 136 and generally rectangular top surfaces 138 and 140, respectively.

As shown in FIGS. 6 to 9, the side portion 12
6 and 128 are the ends ml 114 and 1 of the body portion 112.
16, at an intermediate point approximately equally spaced from body portion 11.
2, sides 1 inclined in opposite angular relation to each other;
The husband and wife are arranged on 18 and 120. Side part 12
6 is also longitudinally offset on the body portion 112 with respect to the side portion 128 such that the apex 142 of the side portion 126 is shown in the figure.
It is now placed above the .

Also in this preferred embodiment of the invention, the oppositely angled sides 118 and 120 of body portion 112 are each disposed at an angle of approximately 4 degrees with respect to the vertical. That is, the included angle between sides 118 and 120 is about 8 degrees. In this embodiment of the invention, the oppositely angled sides 134 and 136 of each of side portions 126 and 128 are each disposed at an angle of approximately 18 degrees with respect to the vertical. Accordingly, the included angle between the sloped side surface 118 of the body portion 112 and the sloped side surface 134 of the side portion 126 is approximately 14 degrees, and the included angle between the sloped side surface 120 of the body portion 112 and the sloped side surface 136 of the side portion 128 is approximately 14 degrees. The included angle of is also about 14 degrees. Side part 12
The convergence of the sloped sides 134 and 136 of the husbands 6 and 128 is approximately 1/a of the maximum width of the sloped sides 118 and 120 of the body portion 112. For example, sloped side 1i 134 and 136
The convergence (distance between sides 130 and 132) of inclined side 1
18 and 120 (edge 11 at edge 124)
If the distance between m7114 and 116 is approximately 5.08 countries (2 inches), then approximately 1.91 am (''/4 inch)
It is.

In this embodiment of the invention, the sloped sides 118 and 134 of the tool 110 are provided with elongated grooves 146, and the sloped sides 120 and 136 of the tool are provided with grooves 148.
These grooves 146 and 148 are generally V-shaped in cross section and have surfaces 118, 120, 1
34.136 centerline. Preferably, the upper portions of grooves 146 and 138 are
40, and preferably the lower ends of grooves 146 and 148 are located above edge 124 by a distance approximately equal to the length of edge 124. For example, the depth of figure 7 grooves 146 and 148 may be approximately 6.04-(8/31 inches). Such a structure allows the tool 110 to be driven into wood.
10 along a straight path.

Preferably, body portion 112 and side portions 126 and 1
28 is constructed of steel or other suitable material having sufficient strength to withstand the forces exerted on these portions and, as previously described, separates the body portion 112 and side portions 126 and 128, respectively. They may be formed in one piece and the separate pieces may be welded or otherwise secured together to form a unitary structure, or the body and side portions may be forged or otherwise formed from a single piece of material. It may also be molded.

In operation of this embodiment of the invention, the wood splitting tool 110 is first positioned such that the edge 124 is placed against one end of the wood to be split. Next, by applying an impact with a large mirror to the end surface 122 of the wood splitting tool 110, or by using a hydraulic, pneumatic or mechanical device that applies a force in one direction of the tool A11G, Appropriate force is applied to the tool 110 and the tool 110 is driven into the wood. As the wood-splitting tool 110 is gradually driven into the wood, the wood is split at a wedge angle of approximately 8 degrees by the oppositely angled sides 118 and 120 of the body portion 112; The wedge angle of 100 degrees makes it easy for the tool 110 to bite into the wood. As the wood splitting tool 110 is driven further into the wood, the apex 144 of the side portion 128 bites into the wood, thereby increasing the wedge angle. At the same time, the area of the lateral surface of the tool that engages the wood is rapidly reduced. Thereafter, the apex 142 of the side portion 126 bites into the wood, causing the wedge angle to increase again, and at the same time, the area of the tool engaging the wood is rapidly reduced. This rapid decrease in the retention area is due to side portions 126 and 128.
This is because the area of sides 134 and 136 of the body portion 112 is significantly smaller than the area of sides 118 and 120 of the body portion 112.

When the tool 110 is driven into the wood, the grooves 1461 and 148
The edges and surfaces forming the tool act to guide the tool through the wood along a straight path.

It has been found that the wood splitting tool 110 can be easily and quickly driven into wood of various types and diameters to split wood, such as logs, with minimal force. Furthermore,
When the structure is as described above, the side portion 126
and 128 are one side 118 and 120 of body portion 112
A large mirror or other force applying device forces the wood outwardly beyond the upper portion of the crowned surface 12 of the body portion 112.
2 so that the tool 110 can be driven completely through the length of the log. In other words, side portions 126 and 128 are adapted to provide clearance to body portion 112 so that tool 110 is driven through the length of the log during a splitting operation. Even when fully placed within the log, the head of a large mirror or other force-applying device is attached to the crowned end surface 12 of the body portion 112.
2 can be engaged.

Additionally, in the structure described above, side portions 126 and 1
28 are made as separate units and the separate fittings are then welded or otherwise secured to the body portion 112 in the manner described above, since the side portions 126 and 128 can be made as the same piece. Tool 11
10 to 13, a wood splitting tool according to a third embodiment of the present invention is generally designated by the reference numeral 210, and the tool 210 is an ax. Alternatively, it has a wedge-shaped solid body portion 212 in the shape of a hatchet spatula V. The body portion 212 has spaced apart end faces 214 and 216.

Body portion 212 also has side surfaces 218 and 220 and a generally rectangular top surface 222. The side surfaces 218 and 220 are inclined portions 2 that are inclined toward each other.
19 and 221, and the inclined portions 21B and 2
21 is smoothly joined to parallel portions 223 and 225 which extend in generally parallel and spaced relation to each other, with the parallel portions 223 and 225 terminating at a relatively sharp edge 224. ing.

A pair of longitudinally offset solid side portions 226 and 2
28, the side portions 226 and 228 are preferably formed integrally with the main body portion 212, such as by forging the wood splitting tool 210 from a single piece of material. Side portions 226 and 228 are spaced apart, generally parallel end surfaces 2 having a generally triangular shape.
30 and 232. Side portions 226 and 22
8 also has side surfaces 234 and 236, respectively, which are inclined in opposite angular relation to each other, and substantially square top surfaces 238 and 240, respectively, with the upper edges of the side portions preferably chamfered portions 239 and 241.
is provided.

As shown, side portions 226 and 23B are located midway through body portion 212, ie, approximately equally spaced from end surfaces 214 and 216.
2 protrudes outward from side surfaces 218 and 220, respectively. Side portion 22B is also longitudinally offset on body portion 212 with respect to side portion 228 such that apex 242 of side portion 226 is aligned with apex 24 of side portion 228 as seen.
It is arranged below 4.

As shown in FIGS. 10-13, in this embodiment of the invention, the relatively thin intrusion portion of the tool 21
0, the intrusion portion being formed by parallel portions 223 and 235 of the sides 218 and 220, which extend approximately parallel to the vertical and are mutually parallel. It is smoothly joined to sloped portions 219 and 221 which are sloped in opposite angular relationship, each sloped at an angle of about 12 degrees to the vertical.

In this embodiment of the invention, side portions 226 and 2
Each of the 28 oppositely angled inclined sides 234 and 236 are each disposed at an angle of approximately 18 degrees with respect to the vertical. Therefore, the main body portion 212
The included angle between the inclined portion 219 of the body portion 212 and the inclined side surface 234 of the side portion 226 is about 6 degrees, and the included angle between the inclined portion 221 of the main body portion 212 and the inclined side surface 236 of the side portion 228 is also about 6 degrees. It is 6 degrees. Side portions 226 and 228
The convexity of each inclined side surface 234 and 236 of the main body portion 21
The minimum distance between the two end faces 214 and 216 is approximately 1/s. For example, the width of the inclined side surfaces 234 and 236 (the width of the end surface 2
30 and 232) such that the minimum width of sides 218 and 220 (the minimum distance between end surfaces 214 and 216) is approximately 76
．． In the case of 2 countries (3 inches), it is approximately 15.9 Confucius (578
inches).

In this embodiment of the invention, the sloped side portions 219 and 234 of the tool 210 are provided with an elongated tapered groove 246, and the sloped side portions 221 and 23 of the tool are provided with an elongated tapered groove 246.
6 is provided with an elongated tapered groove 248, which grooves 246 and 248 are generally V-shaped in cross-section and aligned with the centerline of the surface 219.221.234.236. Preferably grooves 246 and 248
The upper ends intersect top surfaces 238 and 240, respectively.

Grooves 246 and 248 are tapered, i.e., grooves 238 and 240 become progressively narrower and shallower in the direction toward edge 224. Preferably, grooves 246 and 240
The lower end of 8 terminates above sharp edge 224 by a distance approximately equal to the minimum width of sides 218 and 220. For example, the maximum depth of the figure-7 grooves 246 and 248 may be approximately 2.34 crs (a/'am inches), and the groove 246 may have a minimum width of approximately 76 cm on sides 21B and 220.
．． 2omC5 inch), it is about 7
It ends at 6.2ts (3 inches) above. Groove 248
is approximately 12-7 is (l/l
r inch). Such a structure is
It serves to guide the tool 210 along a straight path as it is driven into the wood.

In this embodiment of the invention, body portion 212 is provided with a slotted passageway 250 for receiving a conventional ax or hatchet handle 252, which handle 252 has a conventional lateral 254
or is retained within the passageway 250 by other suitable means. Preferably, body portion 210 and side portions 226 and 228 are constructed of steel or other suitable material having sufficient strength to withstand the forces applied thereto, and as previously discussed, these portions 210 , 22
The 6°228 is preferably forged or otherwise formed as a unitary structure from a single piece of stock. However, it is understood that the body portion 210 and the side portions 226, 228 may be formed as separate pieces and the separate pieces may be welded or otherwise secured together to form a unitary structure. Good morning.

In use of this embodiment of the invention, tool 210 is used in the same manner as an ax or hatchet, and tool 210 includes a handle 25.
2, an appropriate manual force is applied. When the wood splitting tool 210 is slowly driven into the wood, the wood is initially split at a relatively small wedge angle which makes it relatively easy to cut into the wood due to the surface portions 223, 225, 219 and 221. It will be done. As the wood splitting tool 210 is driven further into the wood, the apex 242 of the side portion 226 bites into the wood, increasing the wedge angle. At the same time, the area of the wedge surface of the tool that engages the wood is rapidly reduced. Thereafter, the apex 224 of the side portion 228 bites into the wood, again increasing the wedge angle, and at the same time, the area of the tool that engages the wood is rapidly reduced. The rapid reduction in engagement area is due to the area of sides 234 and 236 of side portions 226 and 228 being smaller than that of surface 223 of body portion 212.
This is because the area is considerably smaller than the area of 225.219 and 221.

It has been found that the wood splitting tool 210 is easily and quickly driven into wood of various types and diameters and is capable of splitting wood, such as logs, without getting stuck in the wood.

Although preferred embodiments of the present invention have been described above,
It will be appreciated that a variety of waveforms may be applied to the present invention. For example, without departing from the scope of the invention,
The wedge angle and the convergence of the continuous wedge surface may be modified.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a wood splitting tool according to a first embodiment of the present invention, showing the tool starting to bite into a log, and FIG. 2 is a perspective view of the tool when viewed from the right side of FIG. FIG. 3 is an end view of the wood splitting tool shown in FIG. 2, and FIG. 4 is a top view of the wood splitting tool shown in FIG. 5 is a bottom view of the wood splitting tool shown in FIG. 2, FIG. 6 is a side view showing the second embodiment of the present invention, and FIG. 7 is a bottom view of the wood splitting tool shown in FIG. 6 is an end view of the wood splitting tool shown in FIG. 6, FIG. 8 is a top view of the wood splitting tool shown in FIG. 7, and FIG. 9 is a top view of the wood splitting tool shown in FIG.
10 is a side view showing a third embodiment of the present invention, and FIG. 11 is a bottom view of the wood splitting tool shown in FIG. is an end view;
12 is a top view of the wood splitting tool shown in FIG. 11, and FIG. 13 is a bottom view of the wood splitting tool shown in FIG. 11. 16... End surface, 18, 2θ... Side surface, 22-... Top surface, 24... Edge, 26.28... Side part, 30
゜32...End face, 34.36...Side 11ij\38
．． 40...Top surface, 42.44...Vertex, 45-...
Log, 110--Wood splitting tool, 112--Main part, 114.116--End surface, 118, 120-
...Side surface, 121--F part of spatula, 122--Top surface, 123--Chamfer, 124--Edge, 126
, 128-... Side part, 130° 132... End surface, 134.136... Side surface, 138° 140... Top surface, 142.144... Apex, 146° 148...
Groove, 210... Wood splitting tool, 212-... Main body part, 214, 216... End surface, 218.220...
Side surface, 219.221... Inclined portion, 222... Top surface, 223.225... Parallel portion, 224... Edge, 226.228... Side portion, 230.232...
... End surface, 234, 236 ... Side surface, '23B, 24
0... Top surface, 231241... Chamfered portion, 242.
244...Vertex, 246.248...Groove, 250.
...Aisle, 252...Handle, 254...Wedge.

Claims (1)

[Claims] (1) A wood splitting tool, which has a generally wedge-shaped main body portion, and the main body portion has a pair of end faces spaced apart from each other in an opposite angular relationship. a pair of angled sides, the oppositely angled sides of the body portion terminating in a relatively sharp edge; a pair of side portions disposed on the oppositely inclined side surfaces of the body portion between the end surfaces of the portion, each side portion having a generally obtuse triangular shape; spaced end surfaces that are substantially parallel to each other and inclined side surfaces that are inclined at an angle, the width of the inclined side surface of each of the side portions being greater than the width of the side surface of the body portion. A wood splitting tool characterized by its small size. (2. In the wood splitting tool according to claim 1, the included angle between the side surfaces of the main body portion adjacent to the side surface portion is between the side surface of the main body portion and the side surface of the side surface portion adjacent thereto. A wood splitting tool characterized by being smaller than the included angle between. The main body portion has a pair of parallel and spaced apart end faces that are approximately in the shape of an isosceles triangle, and a pair of side faces that are inclined at opposite angles to each other, and the body portion has a pair of side faces that are inclined at opposite angles to each other. The angled sides are angled toward each other and terminate in relatively sharp edges at the apexes of the end faces, and the tool also maintains the opposite angular relationship of the body portion between the end faces. It has a pair of side parts that are arranged on the sides that are tilted without
Each of the side portions has a top surface, a pair of substantially parallel spaced apart end surfaces forming a generally obtuse triangular shape, and an angled side surface, and the top surface of the af11 portion a wood splitting tool, wherein the wood splitting tool is disposed between the top surface of the body portion and the relatively sharp edge in a spaced relationship with the top surface of the body portion. . (4) An integrated wood splitting tool having a generally wedge-shaped main body, which is tilted at opposite angles to a pair of end faces spaced apart from each other. a pair of angled sides of the body portion, the oppositely angled sides of the body portion being angled toward each other and terminating in relatively sharp edges; Moreover, approximately equal −L < Im! from the end surface of the main body portion. a pair of side portions disposed on the oppositely inclined side surfaces of the main body portion midway between the spaced apart end surfaces, each of the side portions comprising: It has end faces that are generally obtuse triangular and spaced parallel to each other, and side faces that are inclined at an angle, and one side face of the pair of side face parts is attached to the other side face part. an integral piece of wood which is longitudinally offset on said main body portion, said apex of said one side portion being spaced longitudinally apart from said apex of said other side portion; Splitting tool. (5) The wood splitting tool according to claim 4, wherein the radius of each side surface of each of the side portions is smaller than the width of the side surface of the main body portion. (6) In the wood splitting tool according to any one of claims 1 to 4, elongated grooves are formed in each of the 1IrIf1 of the main body portion and the side surface of the side portion. A wood splitting tool characterized by: (7) The wood splitting tool according to any one of claims 1 to 6, characterized in that a handle is attached to the main body portion. . (8) In the wood splitting tool according to claim 7, an internal passage is formed in the main body, and a part of the handle means is electrically connected to the internal passage formed in the main body. A wood splitting tool characterized by: (9) A wood splitting tool, which has a generally wedge-shaped body portion, the body portion having a top surface, a pair of end surfaces,
and a pair of side surfaces inclined at opposite angles to each other, and the front side surfaces of the main body portion are inclined toward each other. terminating at a relatively sharp edge, the tool also has a pair of side portions disposed on the oppositely angled sides of the body portion between the end surfaces. each of the side portions has a top surface, a pair of substantially parallel and spaced apart end surfaces forming a generally obtuse triangular shape, and an angularly inclined side surface; The top surface of one of the side portions of the body portion is in a spaced relationship with the top surface of the body portion at a location between the top surface of the body portion and the relatively sharp edge. A wood splitting tool characterized in that it is arranged in a horizontal position.