Despite the “canned” patent office “claims” — “the Device with a lever, the fulcrum of which, moving forward and backward through a short arc of a circle, at the same time — through the support-rotating rack, does not lose permanent contact with the ground throughout each work cycle,” lever garden digger (ROCK) is quite simple, reliable, available for manufacture in a modest home workshop. In fact, it is modified gardening fork, equipped with swivel-locking knee, pedal Yes, lever-hinge mechanism with a rotation counter.
Most of the parts of the Rock is performed from a sheet of hard aluminum with a thickness of 3 mm. Although you can use steel 1,5 mm sheet, for example, “stainless steel”. The tool in this case will be heavier, weighing up to 3-3. 5 kg but more durable.
consisting of two parts of the cutting is best suited willow (segments of straight branches with a diameter slightly larger than specified in Fig. 1) wood which is light and elastic. After drying, the workpiece remains only to fillet a plane Yes, clean a rasp.
Both sections of the rotary locking of the knee, and the parts 17, 18 of the pedal run the scan with subsequent bending, crimping (on the discs of appropriate diameter) in a vise. When drilling elements of circular cross section conductor is used, which is a cut area with a number of holes most common diameters (sketches of such devices have been repeatedly published in the magazine under the heading “Tips from around the world”).
Fig. 1. Lever dig the digger:
1 — bayonet (upgraded garden forks), 2 — section of the cutting bottom (dried willow Ø 40, L875), 3 — base (2 PCs.), 4 — section rotary locking of the knee (2 piece), 5 — coupling (STZ, 2 piece, top is made of thread M10 hole Ø 10,2), 6 — M10 screw, 7 — the section of the upper stalk (dried willow 040, L700), 8 — bolt M6 countersunk slotted head screws (6 PCs.) 9 — nut M6 (11 PCs), 10 — small earring (4 PCs), 11 — strengthening of the top plate (2 PCs), 12 — earring-large (2 PCs), 13.— a bracket (2 PCs), 14 — pin-stop (recerntly the M8 screws), 15 — plate gain of the lower (2 PCs), 16 — stand swivel (2 PCs), 17 — foot, 18—the shaped bracket (2 pieces) 19 front support (dural or steel pipe 16×2,5), 20 — tip (dural or steel rod 013), 21 —Shoe replacement, 22 — spacer amplification, a 23 — axle pedals (bolt M10 with nut), 24— clutch-swage, 25 — stop spring (screw M8), 26 sleeve (dural or steel tube 12×2,2 PCs.), 27 — spring (steel wire Ø 2.5), 28 — bolt M8 with nut (3 PCs.), 29 — a rivet-drive shaft (4 PCs.). Material for the manufacture of parts 3, 4, 10-13,15-18,21,22 and 24 — duralumin (sheet s3) or the stainless steel (sheet s2).
Fig. 2. Excavation of the earth layer:
a — start, b — finish.
Design handmade is that on her transfer from the folded state to the working takes very little time. You need only by expanding the two halves of the castle node by 180° and securing the straightened so the handle clamping screw, pivot the support foot (with the Shoe will be located at a distance of 200 mm from the axis of the cutting) with subsequent fixation of parts 10-13 lingering nuts.
Now, how to treat the soil with Rock. Digging, holding right and pressing on the pedal with the left foot. The left hand placed on the handle in front of the right, closer to bayonet (for left-handers — all the way around). In this rotary-locking knee mechanism is given for the length of the outstretched right arm, which ensures easy entry of the tip into the ground (Fig. 2A). Then, smoothly pull the handle on itself, creating for the Archimedean lever, which becomes garden tools, point of support and carry the brunt of the detachable layer of the earth on a tubular stand with interchangeable Shoe. With further tilt the “top” movement embedded “bottom” (Fig. 26) becoming more similar to the work of the excavator bucket which is extended forward with the subsequent eruption of the dredged material.
Yuri MEDVEDEV
a veteran of war and labor,
g. Atkarsk,
The Saratov region.
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We are not talking about dancing on beds, and about the original garden tool with which time-consuming, running from time immemorial bayonet shovel (in the best case — the special fork) work on the “home” plots become even elderly people (author and tester this design is over seventy).