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Rope-ladder

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I'll show you how I made such a funny toy. This principle of action (which is called in the American Internet sector Jacob's Ladder Jakob's ladder) is often found in toys made of wood, plastic, and paper.
I chose the history of Sevastopol as a topic, so I picked up and printed 6 retro photographs of the city and decorated 6 sayings about it in a beautiful font. In addition, 12 substrates (I have black 8x5 cm) and 12 rectangular pieces of thick cardboard (I have a width of 9x6 cm). You will also need glue and tape - preferably kapron transparent and narrow. I needed 3 pieces of 80 cm.

These are already glued workpieces prepared for work.

On 6 of them (I have on those where the statements) on the reverse side we draw lines for gluing the tape. The only fact that matters is that the lines run on all the workpieces at the same level, traditionally one in the middle, the other two at equal distance from the edge (I have 2 cm).

Glue two pieces of tape on the top and bottom lines, with free ends on the left, and one in the middle and its free end remains on the opposite side to the right.

Glue the blank with the picture on top. It is necessary to pay attention that the bottom layer is oriented by the picture in one direction (my text is turned with the vertex left to face down), and the top layer is always in the opposite direction (in my photo they look with the vertex to the right).

Now we transfer the tapes in the opposite direction, that is, the upper and lower right and the middle to the left. We make sure that they do not twist.

Overlay the blank (I have the text with the top left to face down), glue it along the lines and glue the ribbons again wrapping them in the opposite direction, that is, the upper and lower now look to the left, and the middle to the right.
The tapes cannot be too tightly tightened, but great freedom is also not needed. It is best that there is such freedom of tension so that the glued part can be moved a couple of mm to the right and left in relation to the underlying one.

From above, we again paste the blank with the picture with the top to the right. And so from step 7 to step 9 we repeat until the last 2 blanks remain.

We glue the tapes, cut off the excess ends that go beyond the edge.

We paste the last blank with a picture. Now we expand our work and check it. The video shows how this toy should work. Hold the upper part in the hand by the sides and slightly tilt it back and forth. The movement begins - parts of this toy fall from top to bottom.

In the fleet Edit

Used on ships, where they, depending on location, devices and destination, received different names:

  • guys - solid rope ladders that serve to strengthen the masts and their continuation, and ladders for climbing to Mars, salings and higher,
  • storm gangways - rope ladders with wooden steps along which they descend from the stern of a sailing vessel to a rowing boat.

Other Edit

Fire brigades were equipped with rope ladders.

In the West, silk, folding, pocket stairs were known in knightly times and served especially for love affairs, both in practice and in novels.

Often criminals used such a means of escape. Thieves and robbers used rope ladders, and to climb over the wall or climb into the window, they threw them at the same time on cats, - from four catfish hooks or “fatty”.

Jacob's simple do-it-yourself staircase

Jacob's staircase (or Jacob's staircase) is two bare wires located from each other at a small distance, between which an electric arc of a large discharge passes from bottom to top.

Jacob's staircase is an enchanting sight, as is Tesla’s reel. But unlike the Tesla coil, fewer components are needed to create the Jacob ladder, and it’s easier to assemble.

This article will show you how to assemble Jacob’s ladder yourself. But before starting work, you need to remember that this installation in operating mode poses a danger to a person who can touch both the conductors through which the high discharge passes and the electric arc, no matter how beautiful it is. Therefore, soldering and assembling should only be carried out with the voltage turned off. If you need to do something near the working Jacob’s staircase, use only one hand and tools with an insulated handle. It is also advisable that your shoes have rubberized soles to isolate you from the ground.

So, in addition to the conductors, you will need a power source (in this case, a 12 V source was used) and a horizontal transformer with a driver like that of Tesla coils. In this case, the “SainSmart Zero Voltage Switching Tesla Coil Flyback Driver for Sgtc / Marx Generator / jacob's Ladder + Ignition Coil” kit, supplied with the coil, was used. This is how this power module looks:

It supports an input voltage of 12 V to 36 V. At a voltage of 12 V, a power of 50-100 W is achieved.

To isolate the power module from the outside world, it is advisable to place it in some plastic box, and make a small hole in this box for the output of wires.

The images below show the connection of the power unit.

Power wires (black - ground, red - supply voltage) are connected to two pins of connector J1 and exit the box through the hole. Coil wires (blue) connect to J2, as shown in the image. Red wires exit the box from above to connect conductors to them, through which the arc will pass. On the lid of the box you need to make such bolt fasteners for fixing the wires:

The conductors in this example have a slightly curved shape, due to which they diverge to the top, which allows the discharge to be visually effective. At the very bottom of the lid of the plastic box, the conductors are approximately 1 cm apart, from above the distance between them is about 9 cm.

Such a Jacob staircase can be an excellent element of home decor or be a spectacular gift. But it is worth recalling once again that you must not touch the working staircase of Jacob, since the arc voltage can be very dangerous!

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