US129183A - Improvement in adjustable spirit-levels - Google Patents
Improvement in adjustable spirit-levels Download PDFInfo
- Publication number
- US129183A US129183A US129183DA US129183A US 129183 A US129183 A US 129183A US 129183D A US129183D A US 129183DA US 129183 A US129183 A US 129183A
- Authority
- US
- United States
- Prior art keywords
- levels
- improvement
- level
- spirit
- adjustable
- 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
- 239000012530 fluid Substances 0.000 description 2
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
- G01C9/26—Details
- G01C9/28—Mountings
Definitions
- Our invention relates to spirit-levels; and our improvement consists in so forming and arranging the parts that the level may be readilytrued up or adjusted when necessary.
- Figure 1 is a top-plan view of the level with the top plate 0 detached.
- Fig. 2 is avertical section of the same through the line 00 .00 of Fig. 1.
- Levels have heretofore been constructed in which the bulb containing the fluid was made adjustable, but these are liable to get out of order from various causes.
- the object of our invention is to produce a level which shall be simple and easily adjusted.
- the bulb B containing the fluid, is fastened permanently in the body A in the ordinary manner.
- an indicator or index, a in the form of a slide, provided at one end with a slot, through which a screw, 0, passes, to hold the slide in place and allow it to be adjusted when desired.
- a cross-bar or pointer, e which is set or adjusted at the center of the bubble when the level i is set in a perfectly horizontal position.
- the index may be constructed in a variety of ways, and it may be arranged to be adjusted without removing the top plate, the only requirement being that it shall be adjustable and be capable of being fastened'in place. Hence we do not limit our to any special form of device.
- the operation of adjusting the level is as follows: Place the level in an exact level position and remove the top plate 0; then loosen the screw- 0 move the indicator to the center of the bubble, tighten the screw 0, and replace the top plate 0. The level is then ready for use.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- External Artificial Organs (AREA)
Description
E. A. 80C. M. STRATTQN.
improvement in Adjustable'Spirit-Leveis.
Patented July 16, 1872.
AM. IIIIITO-LITHOGRAPIIIC W MX/0SBOKNE5 PROCESS] PATENT OEEIoE.
EDWIN A. STRATTON AND CHARLES STRATTON', OF GREENFIELD, MASS.
IMPROVEMENT IN ADJUSTABLE SPIRIT-LEVELS.
Specification forming part of Letters Patent No. 129,183, dated July 16, 1872.
SPECIFICATION.
To all whom it may concern:
Be it known that we, EDWIN A. STRATTON and CHARLES M. STRATTON, of Greenfield, in the county of Franklin and State of Massachusetts, have invented certain Improvements in Spirit-Levels, of which the following is a specification, referencebein g had to the accompanying drawing.
Our invention relates to spirit-levels; and our improvement consists in so forming and arranging the parts that the level may be readilytrued up or adjusted when necessary.
Figure 1 is a top-plan view of the level with the top plate 0 detached. Fig. 2 is avertical section of the same through the line 00 .00 of Fig. 1.
Levels have heretofore been constructed in which the bulb containing the fluid was made adjustable, but these are liable to get out of order from various causes. The object of our invention is to produce a level which shall be simple and easily adjusted.
In constructing our improved level the bulb B, containing the fluid, is fastened permanently in the body A in the ordinary manner. We then provide an indicator or index, a, in the form of a slide, provided at one end with a slot, through which a screw, 0, passes, to hold the slide in place and allow it to be adjusted when desired. At the opposite end of this slide is a cross-bar or pointer, e, which is set or adjusted at the center of the bubble when the level i is set in a perfectly horizontal position.
It is obvious that the index may be constructed in a variety of ways, and it may be arranged to be adjusted without removing the top plate, the only requirement being that it shall be adjustable and be capable of being fastened'in place. Hence we do not limit ourselves to any special form of device.
The operation of adjusting the level is as follows: Place the level in an exact level position and remove the top plate 0; then loosen the screw- 0 move the indicator to the center of the bubble, tighten the screw 0, and replace the top plate 0. The level is then ready for use.
Having thus described our invention, what we claim is- A spirit-level provided with an index or
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US129183A true US129183A (en) | 1872-07-16 |
Family
ID=2198601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US129183D Expired - Lifetime US129183A (en) | Improvement in adjustable spirit-levels |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US129183A (en) |
-
0
- US US129183D patent/US129183A/en not_active Expired - Lifetime
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