Q:Who invented the first supermarket cart?

The inventor of the shopping barrow -- celwin Goldman (1937) Sylvain paillard, Goldman is the boss of a supermarket, Oklahoma city, one day, when he is gazing at the store a few folding chairs, suddenly produced inspiration, invented the shopping cart

Q:How do you install the ball bearings in the middle of the wheelbarrow?

If the stroke is very difficult, you don't have to force it to avoid damaging the axle or bearing. You can heat the bearings in an oil bath to make them swell, and then it will be easier. It is important to note that the oil temperature should not be too high to prevent the bearing from falling.

Q:Can babies sleep on a baby cart for a long time

In fact, it's not true that the baby's stroller is bad for the spine. The quality and the design pass the baby stroller, the baby lies down to sleep the feeling and in the bed is not different, just the space is smaller.

Q:How to remove the fold cart cart wheel

If you need to install it, just put the wheel back on the wheel shaft and press the inner pressure to the sound of the click, and the wheel is in place.

Q:What is the difference between LV1 and LV10?

Pushcart (Pushcart) [skill ID# 39] Series: the maximum passive level: Lv 10 Learning conditions: negative Weight limit Lv 5 Other skills required for this skill: open store (L3), cart acceleration (L5). Content: a cart with heavy loads can be used. Use the alt-w key to open the cart window at the carra service center. The items on the cart are not available directly

Q:What is the weight of the wheel on the cart

The 6305 bearing is a deep groove ball bearing, which is characterized by the ability to withstand large radial load, and the disadvantage is that the bearing capacity of the axial load is very small

Q:What is the etiquette of having a trolley in the form room

That is often take in the center of the rotation center of mass, or the form of geometric center, the center of mass (or geometric center) if there is movement is called a "translation", regardless of whether can be seen as an object around another little exercise. This is especially important due to the low level of people in high school.

Q:How to talk about supermarkets

Supermarket shopping cart ads are issued by advertising agencies. Advertising agencies are responsible for advertising, design, production, installation and maintenance.

Q:Is it a pushcart or a car?

Pulling a cart is more efficient than pushing a cart Wheelbarrows, easy to use, can be pushed and pulled. Push and pull force direction is same as the Angle of horizontal line, is it a pushcart or pull a car? The force is not so easy, it depends on the resistance of the wheel

Q:How do you know how to replace a tyre with a cart

Loading is slowly one layer, and then let the person next to help you set in place to hold, remember a principle, is to plug in, when is all in all, success.