US7689A - Spring-calipees - Google Patents
Spring-calipees Download PDFInfo
- Publication number
- US7689A US7689A US7689DA US7689A US 7689 A US7689 A US 7689A US 7689D A US7689D A US 7689DA US 7689 A US7689 A US 7689A
- Authority
- US
- United States
- Prior art keywords
- spring
- calipees
- smith
- calipers
- inclosed
- 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
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/22—Feeler-pin gauges, e.g. dial gauges
- G01B3/24—Feeler-pin gauges, e.g. dial gauges with open yoke, i.e. calipers
Definitions
- Letter A is the shank.
- 10 B is the cross bar and nut as usual in SMITH spring calipers and dividers.
- F C is the spring inclosed within the hollow JosHUA STEVENS,
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Woven Fabrics (AREA)
- Artificial Filaments (AREA)
Description
W. W. SMITH.
Calipers.
Patented Oct. 1, 1850.
i UNTTED STATES PATENT QFFTCE.
WM. W. SMITH, OE BOSTON, MASSACHUSETTS.
SPRING-CALIPERS.
Specification of Letters Patent No. 7,689, dated October 1, 1850.
To all whom it may concern: WVhat I claim as my improvement and Be it known that I, XVILLIAM V. SMITH, wish to secure by Letters Patent is. 15
of Boston, in the county of Sufiolk and State The circular spring inclosed within the of Massachusetts, have invented a new and hollow head resting on the pivot on which 5 useful Improvement in the Spring Caliper the two parts turn and acting on the two and Divider, of which the following is a parts (or shanks) throwing them outward full and exact description, reference being against the nut on the cross bar. made to the inclosed drawing.
Letter A is the shank. 10 B is the cross bar and nut as usual in SMITH spring calipers and dividers. Witnesses: F C is the spring inclosed within the hollow JosHUA STEVENS,
head. E. V. B. HOLCOMB-
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US7689A true US7689A (en) | 1850-10-01 |
Family
ID=2067999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US7689D Expired - Lifetime US7689A (en) | Spring-calipees |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US7689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100283547A1 (en) * | 2006-04-18 | 2010-11-11 | Dally William J | Signaling system with low-power automatic gain control |
-
0
- US US7689D patent/US7689A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100283547A1 (en) * | 2006-04-18 | 2010-11-11 | Dally William J | Signaling system with low-power automatic gain control |
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