Public Design Bureau

A BAG OF FLOUR FOR A FEW MINUTES

30.05.201813.05.2018Small-scale mechanization

echnology the manufacture of major components of the mill are quite simple. From thick-walled pipe 60×10 mm should be cut on the machine supporting sleeve and “grab” it to gas or electric to advance cut a circle out of smooth steel sheet with a thickness of about 10 mm. Then, while holding the “oven MITT” in the Chuck of the lathe, the handle to the required size billet cap so that the socket diameter 332 mm coincided with the sizes of available drum. Likewise be made and a second drive.

BANK-ACTIVATOR

30.05.201813.05.2018Small-scale mechanization

Getting a series of experiments related to the breeding of cold-resistant varieties of corn, I remembered about the amazing properties of water, treated with a constant electric current. In particular, that formed in the zone of the cathode, the catholyte has reducing (alkaline) properties and behaves according to the truth as “living” water, in contrast to its antipode — anolyte, a kind of oxidizer, or “dead” water produced in the area of the anode.Relying on high biological activity of the catholyte, decided to treat a handful of seeds before sowing in progressiya the ground. “Living” water was required very little. But where is the “spring”, from which it can be obtained?

TRICYCLE WITH ROLL

30.05.201813.05.2018Design

The history of car industry it is known that the first car was three-wheeled crew K. Benz. In the future, with increasing speed, was replaced by four-wheeled machine, the more stable in the turns. However, the designers did not leave the desire to create a three-wheeled chassis of the same resistance. It is constructively easier and lighter with the same capacity, therefore more reliable and cheap to operate.

PENDULUM WITH ZAMOSTOTSKIY

30.05.201813.05.2018Small-scale mechanization

The proposed machine is designed primarily for disposal of dilapidated wooden buildings on the wood. Because of the many nails sticking out everywhere, this waste material can not afford a chainsaw “Friendship”, and therefore worth a few pennies. Cheapness, of course, attracts. Stops other: than and how to cut this here, bristling with “raviel” a conglomeration of old boards, beams, logs?

CATAMARAN FOR FOUR

30.05.201813.05.2018Design

For water hikes inflatable catamaran has a number of advantages over the kayak. It is high reliability, great stability, with satisfactory maneuverability, increased permeability of the rapids sections, low weight, comfort, and convenience for boarding and alighting. In the end, the benefits outweigh the known disadvantages of a catamaran — high windage hull with the crew and low speed when driving on the oars. Propose a simple design of a catamaran, which used available materials.

RECUMBENT: LET’S HIT THE ROAD!

30.05.201813.05.2018Design

In the late 70-ies in the press, especially in the journal “modelist-Konstruktor”, wrote a lot about velomobiles. Was presented designs of various authors. Some argued that a new form of transport, which in the future will press not only a bike but a car. However, nothing happened. Why? A simple answer to this question is difficult. Will only Express some thoughts.

CHANGE ROUND TO OVAL

30.05.201813.05.2018Design

A letter from our reader V. Zasyadko prompted the idea to go back to the old idea of replacing the round sprocket of the bike Ellipso, which leads to the alignment torque generated by the efforts of the cyclist when pedaling. According to cyclists, the idea deserves attention, and the embodiment of her life — not too time consuming even at home. The recommendations V. Zasyadko calculation ellipse-tion of stars and of its manufacturing technology.

TRACTOR-TRUCK: A SMALL, BUT VALIANT

30.05.201813.05.2018Small-scale mechanization

The first homemade motorized assistant appeared in our family almost 20 years ago. We made it V. Il’ichev development of the suburbs, published in the journal “modelist-Konstruktor”. And found how good it is to have the farm walk-behind tractor-wagon, which in any case will not fail, be it tillage or the cleaning and removal of crops from the field.

GROWERS PITCHER

30.05.201813.05.2018Small-scale mechanization

Ceramic jugs in the village are not uncommon. Apparently because of the cheapness and practicability of vessels of baked clay, in which water almost months remains prohladnenskiy, and dairy products long do not spoil. They say that in bolsaescola buried in the neck in the ground and tightly sealed jars, it is preferable to preserve even home “wedding” wine. But to use them as a vegetable store…

WITH A PROPELLER IN THE WATER…

30.05.201813.05.2018Design

The propeller, or, as at the dawn of aviation, the propeller is experiencing a rebirth. The reason is the emergence of daltelecom and motor paragliders with very advanced rotor settings. The pilots quickly learned that they can be used in ground form.

It should be noted that the power units deltalyo power, reliability and efficiency are ideal for creating aerovision, since the parameters of the motor with propeller is not worse than the traditional powertrain with the propeller. Moreover, the boat with aredigital not afraid of shallow water, reeds, sedges and algae. Besides the engine, the glider releases the exhaust is not in the water, like an outboard or stationary power unit for any boat (from the point of view of environmentalists, this method of muffling the exhaust note is not tenable!), and in the air.