US31773A - black - Google Patents
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- Publication number
- US31773A US31773A US31773DA US31773A US 31773 A US31773 A US 31773A US 31773D A US31773D A US 31773DA US 31773 A US31773 A US 31773A
- Authority
- US
- United States
- Prior art keywords
- black
- index
- dial
- center
- awn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011521 glass Substances 0.000 description 6
- 240000000218 Cannabis sativa Species 0.000 description 2
- 241000746422 Stipa Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000576 supplementary Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/10—Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers
Definitions
- A is a board or case upon or within which is the dial a, from the center of which there lis a hole through the back of the board or box for the reception of a plug b, of wood 0r ⁇ other material in the center of which is inserted and secured one end of the twisted axis c, composed of a portion of the length of the awn represented in Fig. 4.
- the twisted axis has secured to it at or near its opposite end, which 4projects through. an opening in the center of the dial, the index CZ.
- e is a glass, covering the index and dial but having a hole in the center for the admission of the atmosphere around the axis o.
- f is a pointer, fitted to the hole in the center of the glass e, in such manner as not to obstruct the entrance of air through the said hole, and in such manner as to be capable of adjustment by hand outside the glass for the purpose of showing what may have been the position of the index d, at a certain time.
- the index is caused to turn in one direction or the other, and, by a proper' system of graduation of the dial, may be made to indicate the degree of moisture in the atmosphere.
- the twisted axis c be ofconsiderable length it will make more than a complete revolution between the extremes of ⁇ the hygrometric condition otl the atmosphere, and in fact it nearly the whole awn be used for the axis'it may make even three or four revolutions, and as these could not be traced upon the dial without very constant watching, we propose to use in some cases the supplementary index g, which is made in the form of the letter L, as shown in Figs. 2 and 3, and secured to the twisted axis at a suitable point between where it is secured in the plug I), and where the index el, is attached, and when this index A. H. BLACK. C. R. BLACK. witnesseses: Y
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Description
UNITED sTATEs PATENT oEEIoE.
A. H. BLACK AND C. R. BLACK, OF INDIANAPOLIS, INDIANA.
HYGROMETER.
Specification of Letters Patent No. 31,773, dated March 26, 1861.
To all whom tt may concern:
`Be it known that we, A. H. BLACK and C. R. BLACK, both of Indianapolis, in the county of Marion and State of Indiana, have invented a new and Improved Hygrometer, which we term The Natural 11V eat-her- Guideg and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specication, in which- Figure l is a face view of the instrument. Fig. 2 is a central vertical section of the same. Fig. 3 is a side view representing the operating portion of the instrument detached. Fig. 4c represents the seed and twisted awn of a grass of the order stipa such awn constituting the principal element of our instrument.
Similar letters of reference indicate corresponding parts in the several figures.
To enable others to make and use our invention we will proceed to describe its con struction and operation.
A is a board or case upon or within which is the dial a, from the center of which there lis a hole through the back of the board or box for the reception of a plug b, of wood 0r` other material in the center of which is inserted and secured one end of the twisted axis c, composed of a portion of the length of the awn represented in Fig. 4. The twisted axis has secured to it at or near its opposite end, which 4projects through. an opening in the center of the dial, the index CZ.
e, is a glass, covering the index and dial but having a hole in the center for the admission of the atmosphere around the axis o.
f, is a pointer, fitted to the hole in the center of the glass e, in such manner as not to obstruct the entrance of air through the said hole, and in such manner as to be capable of adjustment by hand outside the glass for the purpose of showing what may have been the position of the index d, at a certain time.
As the twisted axis c, t-wists and untwists itself with the changes in the hygrometric condition of the atmosphere, the index is caused to turn in one direction or the other, and, by a proper' system of graduation of the dial, may be made to indicate the degree of moisture in the atmosphere. If the twisted axis c, be ofconsiderable length it will make more than a complete revolution between the extremes of `the hygrometric condition otl the atmosphere, and in fact it nearly the whole awn be used for the axis'it may make even three or four revolutions, and as these could not be traced upon the dial without very constant watching, we propose to use in some cases the supplementary index g, which is made in the form of the letter L, as shown in Figs. 2 and 3, and secured to the twisted axis at a suitable point between where it is secured in the plug I), and where the index el, is attached, and when this index A. H. BLACK. C. R. BLACK. Witnesses: Y
ALEXANDER H. CAMER, J. H. SEYBOLD.
Publications (1)
Publication Number | Publication Date |
---|---|
US31773A true US31773A (en) | 1861-03-26 |
Family
ID=2101401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US31773D Expired - Lifetime US31773A (en) | black |
Country Status (1)
Country | Link |
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US (1) | US31773A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4633446A (en) * | 1979-04-13 | 1986-12-30 | Dresser Industries, Inc. | Scrolling well logging data display method and apparatus |
US20050256078A1 (en) * | 2003-04-25 | 2005-11-17 | Carina Cannizzaro | Inosine monophosphate dehydrogenase inhibitory phosphonate compounds |
US20070027113A1 (en) * | 2003-10-24 | 2007-02-01 | James Chen | Purine nucleoside phosphorylase inhibitory phosphonate compounds |
-
0
- US US31773D patent/US31773A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4633446A (en) * | 1979-04-13 | 1986-12-30 | Dresser Industries, Inc. | Scrolling well logging data display method and apparatus |
US20050256078A1 (en) * | 2003-04-25 | 2005-11-17 | Carina Cannizzaro | Inosine monophosphate dehydrogenase inhibitory phosphonate compounds |
US20070027113A1 (en) * | 2003-10-24 | 2007-02-01 | James Chen | Purine nucleoside phosphorylase inhibitory phosphonate compounds |
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