In fact, every kind of car in our lives has an evolutionary process. It has an indelible history. Of course, the sanitation expert's cleaning car is no exception. When I browsed a foreign site recently, I discovered a few accidents. The old photographs of the street sweepers in Denver, USA, were specifically shared with other card members.

When it comes to Denver, what many people think of first is the NBA's Denver Nuggets, mentioning that Iverson and Anthony's gold double shot still came to mind, let's say that it's time to go straight to the topic of the article, let us Take a look at those cleaning cars on the streets of Denver.

The cleaning car is an important part of a special car. It can be called an expert on urban beauty and beautification; at the very beginning, the streets of Denver were horse-drawn sweepers. The rear of the carriage pulled a water tank, which contained purification. The road uses water, but the amount of water carried is not too much. We also saw the roller brush under the carriage. This should be used for sweeping.

Denver Mara Sweeper

The old photographs of the streets of Denver cleaning the car were generally pulled by two horses. Because the car was rebuilt, the driver could sit above the tank.

Glen Doefield, the head of Denver's street sweeping at the time, proposed the idea of ​​using a Fordson tractor as a sweeper instead of a horse-drawn car to clean the street. In the 1925 Denver street, there was a tractor-type washing machine. From the photos, it can be seen that the driver sits high on the water tank and controls the car through the steering wheel. Starting from this tractor, modern road sweepers entered a new era of rapid development.

● Postscript:

From the beginning of the horse-washer trucks to the later tractors, it was largely due to the promotion of the industrial revolution at that time; along with the historical changes, the progress of the era, the washing trucks have also developed step by step to the present day. It is the best witness for cleaning vehicles from scratch.

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