For this homemade the author took a piece of strip with such dimensions: length 190 mm., width 40 mm., thickness 4 mm.
Having made a marking on it 70 * 50 * 70 mm. He clamped it in a yew and gave it such a shape with a hammer.
According to the author, this part can be replaced with a piece of a conventional channel of a suitable size.
Then in these places the author will make holes, first with a small drill, and then with a larger drill.
Next, the author took a round with a face of 14, can be replaced with a bolt M 12.
Then the author took the gear, any important thing would be suitable for her to dress on the bolt.
On a lathe, he removed the excess from the gear, this can also be done using angle grinders.
Now the author grinds all the gear teeth in one direction.
On a round the author will make a cut.
Putting in place the sawn along the round he put on the gear.
The author began to manufacture a retainer. For this, the author needed not a large piece of steel square.
From one edge of this square he will carve a tooth, which will fix the gear in the future, and he will also make a hole in it for fastening.
Also, the author will make a hole for fixing the latch on the body.
The author will take the spring for the retainer from a regular clothespin and modify it a little. 36 37
Trying it on and making a couple of holes for mounting.
Then finalization and installation of the spring.
The author will weld the mounting screws on the reverse side.
After welding, the author decided to change the position of one edge of the spring. (According to him, this is how the spring works better and more efficiently. So, you can avoid making a hole for the spring in the lock.)
Further, the author will weld a hook made of a steel strip to the body, it can be replaced with a carbine.
Then the author will put on a fixing tape or, more simply, the old seat belt is cut on a bolt.
Put the gear in place and weld it to the bolt.
Here is a device turned out by the author.
Test.
Also according to the author, this device can be used as a mini winch for small loads.
Thank you all for your time. See you.
Homemade video: