Thermometer scale magnifier
OwnerJustin J. Shapiroinventor
Life of this patent
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Abstract
A magnifying indicator for a thermometer or similar columnar instrument, said indicator consisting of a one-piece body of transparent plastic formed with a cylindrical base block and an upstanding lens on the front portion of the base block. Opposite the lens the base block is formed with a rearwardly-facing vertical V-groove in which the columnar instrument is receivable. A U-shaped wire spring is anchored at one side of the groove and transversely overlies the groove. The spring is arranged to allow the columnar instrument to be slipped into the groove so as to engage against the flat sides thereof and thereafter to clamp the instrument in the groove to prevent angular disorientation of the lens relative to the columnar instrument, while permitting sliding adjustment of the magnifying indicator along the instrument scale.
Claims11
A magnifying indicator for an elongated tubular instrument of the type having a linearly extending scale, said indicator comprising a main body including a base block and an upstanding lens rigidly secured on the base block, the rear portion of the base block being formed with a vertical groove in which the elongated instrument is receivable, and a spring arm connected to the rear portion of the base block and transversely overlying said groove and being resiliently engageable with such instrument to retain the instrument in the groove and to limit angular displacement of the instrument relative to the lens, wherein said spring arm comprises a generally U-shaped wire spring member having anchoring elements, said base block having bores adjacent one side of the groove lockingly receiving said anchoring elements.
Dependencies are inferred from the claim text.