US Patent: 1,265,934
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| Gage
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Patentee:
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| Lewis A. Mapel (exact or similar names) - St. Louis, MO |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 29, 1917 |
| Granted: |
May 14, 1918 |
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Joel Havens
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Description: |
| Bakewell & Christy - patent attorneys
This invention relates to pressure and vacuum gages. One object of the invention is to provide a gage that is more accurate and sensitive than the pressure and vacuum gages now in general use.Another object is to provide a gage that will indicate only part of the pressure or vacuum in the system with which the gage is used. Another object is to provide a Bourdon spring gage, which is so constructed that its indicating hand will accurately register the quantity or depth of liquid in a tank or the pressure in a container, and will remain at zero when the tank becomes empty or the pressure in the container becomes exhausted, notwithstanding the fact that the Bourdon spring thereafter moves, due to a variation in the pressure or vacuum used in the system. Another object is to provide a Bourdon spring gage in which the spring and the indicator are connected together by a flexible element that permits the spring to move in one direction beyond a certain limit without affecting the hand or causing any parts of the gage to be subjected to undue strains. Another object is to provide a gage of the general type referred to which is so constructed that it is not necessary to remove the hands and the dial of the gage during the operation of setting or adjusting the hands, the adjustment of the hand controlled by the Bourdon spring being effect by simply turning a device that is normally concealed from view by a removable closure on the gage housing. And still another object of the invention is to provide a Bourdon spring gage which is so constructed that it can be adjusted easily to vary the relative degree of movement imparted to the indicating hand by the spring, thereby enabling the gage to be used with different kinds of devices or apparatus of different capacity, by simply substituting different dials or dials that are graduated differently, and changing the condition of the means that transmits movement from the spring to the indicating hand.
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