US154677A - Improvement in spirit-levels - Google Patents
Improvement in spirit-levels Download PDFInfo
- Publication number
- US154677A US154677A US154677DA US154677A US 154677 A US154677 A US 154677A US 154677D A US154677D A US 154677DA US 154677 A US154677 A US 154677A
- Authority
- US
- United States
- Prior art keywords
- spirit
- levels
- level
- improvement
- frame
- 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
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 101001135021 Homo sapiens Prostate and testis expressed protein 1 Proteins 0.000 description 1
- 102100033514 Prostate and testis expressed protein 1 Human genes 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- A represents a castmetal upright frame of a size and form adapted v to receive the level and plumb glasses of the instrument, the former being shown at B, and the latter at O, as disposed immediately under it.
- I attach, by means of screws, rivets, or in any suitable manner, a,
- I flat steel plate, which is the base or table of the level, and is composed, preferably, of steel, and the under side of this plate is to be planed to a true and straight surface. I furthermore truss the frame A and table I) by suitable chords or braces a wand b b, and posts 0 c, substantially as shown in the drawings, by which means the entire level-frame is rendered vvery strong, stiff, and light.
- the frames of spirit-levels have been composed of a solid bar of wood or castiron, in the former instance being comparatively frail and destructible, and liable to twist and change by changes of temperature and age, while the cast-iron frames are 'very heavy and unwieldy, and are easily broken.
- a level constructed as herein explained possesses, among others, the following advantages: First, I am enabled to employ a much longer plumb glass than is possible in a wooden beam level, thus producing a more perfect instrument 5 second, when once properly adjusted it will remain true and correct for any length of time, as its adjustment is unaffected by moisture or variations of temperature; third, it is not liable to become scarred orfractured, as in the case of a wooden frame, or cracked or broken like one of castiron, and it is in fact, with reasonable care, indestructible; fourth, it is very light and convenient to use, is ornamental in appearance, and its plumb-glass is more exposed, and consequently more easily read, than in levels heretofore made.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Rod-Shaped Construction Members (AREA)
- Joining Of Building Structures In Genera (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Description
A. F. HYDE.
Spirit Level-s.
N.0.]54,677. I Patnted Sept.1,18-74.
lie need.
g I I ITNESSES. Alt/( ,16.
THE sRAPmc coyuoro-urmasau PARK PLA'cmNX.
UNITED STATES PATE1\TT OFFIoE.
ALBE F. HYDE, OF BOSTON, MASSACHUSETTS.
IMPROVEMENT IN SPIRIT-LEVELS.
Specification forming part of Letters Patent No. 154,677, dated September 1, 1874; application filed July 14, 1874.
' .of a spirit-level containing my improvements.
In these drawings, A represents a castmetal upright frame of a size and form adapted v to receive the level and plumb glasses of the instrument, the former being shown at B, and the latter at O, as disposed immediately under it. To the under side of the central glasssupport A, I attach, by means of screws, rivets, or in any suitable manner, a,
flat steel plate, I), which is the base or table of the level, and is composed, preferably, of steel, and the under side of this plate is to be planed to a true and straight surface. I furthermore truss the frame A and table I) by suitable chords or braces a wand b b, and posts 0 c, substantially as shown in the drawings, by which means the entire level-frame is rendered vvery strong, stiff, and light.
Heretofore' the frames of spirit-levels have been composed of a solid bar of wood or castiron, in the former instance being comparatively frail and destructible, and liable to twist and change by changes of temperature and age, while the cast-iron frames are 'very heavy and unwieldy, and are easily broken.
A level constructed as herein explained possesses, among others, the following advantages: First, I am enabled to employ a much longer plumb glass than is possible in a wooden beam level, thus producing a more perfect instrument 5 second, when once properly adjusted it will remain true and correct for any length of time, as its adjustment is unaffected by moisture or variations of temperature; third, it is not liable to become scarred orfractured, as in the case of a wooden frame, or cracked or broken like one of castiron, and it is in fact, with reasonable care, indestructible; fourth, it is very light and convenient to use, is ornamental in appearance, and its plumb-glass is more exposed, and consequently more easily read, than in levels heretofore made.
I claim A spirit-level frame composed of a central glass-support, a base or table, and a truss frame or braces, substantially as and for purposes stated.
, ALBE F. HYDE.
Witnesses:
FRANCIS E. FAXON, W. E. BOARDMAN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US154677A true US154677A (en) | 1874-09-01 |
Family
ID=2224087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US154677D Expired - Lifetime US154677A (en) | Improvement in spirit-levels |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US154677A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD337279S (en) | 1991-01-28 | 1993-07-13 | Styles Charles C | Combination level and template |
| US6070336A (en) * | 1998-03-12 | 2000-06-06 | Rodgers; Ron D. | Framing tool |
-
0
- US US154677D patent/US154677A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD337279S (en) | 1991-01-28 | 1993-07-13 | Styles Charles C | Combination level and template |
| US6070336A (en) * | 1998-03-12 | 2000-06-06 | Rodgers; Ron D. | Framing tool |
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