30 March : Your pencil with eraser is 165 years old
We all have used the pencil with eraser. This concept is quite unique and old. Almost 160 years ago someone thought of making such pencils which have erasers attached to it. Know the unknown here.
All of you must have used this kind of pencil. But today you would know that this style was found in 1858. In fact, it was patented by stationer Hymen Lipman of Philadelphia today in 1858.
Hymen Lipman
Nearly 60 years after LipmanтАЩs innovation, the rubber-tipped pencil became a hit.
An interesting feature of this design was that the eraser was actually installed within the wood of the pencil opposite from the writing core end. In this manner, the pencil could be sharpened on both ends to refresh either the graphite core or eraser.
In 1862, Lipman sold his patent to Joseph Reckendorfer for $100,000, who went to sue the pencil manufacturer Faber for infringement.
In 1875 the Supreme Court of the United States ruled against Reckendorfer declaring the patent invalid because his invention was actually a combination of two already known things with no new use.
All of you must have used this kind of pencil. But today you would know that this style was found in 1858. In fact, it was patented by stationer Hymen Lipman of Philadelphia today in 1858.
Nearly 60 years after LipmanтАЩs innovation, the rubber-tipped pencil became a hit.
An interesting feature of this design was that the eraser was actually installed within the wood of the pencil opposite from the writing core end. In this manner, the pencil could be sharpened on both ends to refresh either the graphite core or eraser.
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