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VacHunter Gallery - Plunger
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These are among the most common of the non electric vacuum
cleaners. Some people believe this style of cleaner is from the
1800's. In actuality, the plunger vacuum made its appearance after
1900. There may be a few exceptions, but most of them were sold under a
patent license that dates from December 26, 1911. They are normally
long, slender cylinders that taper at the bottom of the machine with a nozzle
connected at the end which contacts the floor. A plunger handle at the
top of the cleaner is drawn upward with one hand, while the other hand
stabilizes the machine. This action develops suction as air is drawn
into the nozzle when the plunger seal moves up through the cleaner's
body. If you can visualize a hypodermic needle in action as a nurse
draws a blood sample, you will notice that these machines work on the same
principle. Dust was sucked into a small diameter tube where it entered
the center of the body. After the dust fell to the side of the
cleaner's interior, it was trapped in the funnel shaped part of the machine.
In addition, a cloth air filter, above the containment area, was incorporated
into the design.
They worked to a certain degree. Remember, they were designed to pick up dust and light dirt on very thin carpeting, oil cloth, or bare floors. Of course, they would not do an adaquate job on today's thick flooring. The main drawback of the early plunger machines was the fact that they only created suction on the upward stroke. The energy expended by the user to force the plunger down did not result in any cleaning action. As a result, the machines were effective only 50% of the operation time under optimum conditions.
An important improvement was made to later plunger vacuums. I like to call it the by-pass system. An extra tube was attached to the side of the machine containing little check valves. The placement of the valves allowed for vacuum to be produced during both the upward and downward movement of the plunger. The plunger style vacuum was the forerunner of the lightweight "stick-vacs" of today.
Some hybrids existed as well. They may have used bellows, exterior dust
collecting bags, or twin handles. None-the-less, they are still
exciting to watch in action.
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VacHunter's Bio Early Carpet Cleaning Non Electric Vacuums Pumper Early Electric Vacuums Upright Collectibles |
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VacHunter
Robert
Kautzman
Copyright
©2012
vachunter@vachunter.com