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Remember that the bottom screws are angled towards the dust canister (following the angled line of the handle).

are still around today, and are a cheaper alternative to vacuum cleaners.. What Did the First Vacuum Cleaner Look Like?.The first vacuum cleaner was a huge device.

In fact, it was the size of a small cart and needed to be pulled by horses to its destination!.Despite its size, the underlying technology was similar to the vacuums we use today.The main differences are in size, noise, and efficiency..

When Booth’s vacuum arrived at a building to be cleaned, the operators used long hoses to suck up dust.The air was passed through a filter, allowing dirt to be collected in the main body of the vacuum.. Cleverly, Booth had included a small window into the chamber, so people passing by could see how much dirt was being collected.

This, combined with the large machine, meant that the vacuum generated free marketing wherever it went..

While there was some controversy about the machine – including the noise when in operation – Booth’s vacuum became known as the only vacuum cleaner that really worked.These include an anti-hair wrap floorhead, pet hair tool, and Shark’s “Powered Lift-Away” mode.. Is the AZ910UKT a better vacuum than Shark’s other uprights though?

And is it worth the price?Keep reading our in-depth Shark AZ910UKT review to find out.. Overview of the Shark AZ910UKT’s Features.

Powerful bagless upright vacuum cleaner.Shark’s DuoClean floorhead with two brush rolls for multi-surface cleaning.