US493683A - George a - Google Patents
George a Download PDFInfo
- Publication number
- US493683A US493683A US493683DA US493683A US 493683 A US493683 A US 493683A US 493683D A US493683D A US 493683DA US 493683 A US493683 A US 493683A
- Authority
- US
- United States
- Prior art keywords
- jaw
- rod
- george
- graduated
- magnifying glass
- 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
- 210000001847 Jaw Anatomy 0.000 description 22
- 239000011521 glass Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 206010022114 Injury Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
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
- G01B3/20—Slide gauges
Definitions
- GEORGE A COLNON, OF VASI-IINGTON, DISTRICT OF COLUMBIA.
- My invention relates to certain new and useful" improvements in beam calipers and has for its object to produce such a device that shall be extremely light and strong and capable of rapid and accurate adjustment and to provide means for enabling the graduations to be accurately and easily discerned.
- Figure l is a top plan View of myiinproved device.
- Fig. 2 is an end View thereof, and
- Fig. 3 a longitudinal section.
- the letter A indicates a rod which is longitudinally slotted and has aiixed to one end thereof a jaw B. Within said slotted rod A is set a graduated plate or metallic strip C and secured therein in any suitable manner.
- a movable jaw which is provided With a perforation adapting it to slide over the rod A and is split so as to straddle the graduated strip C and its ends provided with a clamping screw E whereby said jaw may be-locked upon the rod at any point to which it may be adjusted.
- a standard F carrying at its outer end a frame or casing G within which is pivoted a magnifying glass I'Iin such a manner that said glass may be swung upon its pivot over the graduations marked upon the strip C and thus enable the operator to quickly and accurately note the very smallest graduations necessary to effect a very close measurement.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Description
(No Model.)
G. A. COLNON.
` BEAM GALIPERS.
No. 493,683. Patented Mar. 2l, 1893.
UNITED STATES PATENT OFFICE.
GEORGE A. COLNON, OF VASI-IINGTON, DISTRICT OF COLUMBIA.
BEAM-CAL|PERS.`
SPECIFICATION forming part of Letters Patent N0. 493,683, dated March 21, 1893.
Application tiled May 27, 1892. Serial No. 434.533. (No model.)
T0 all whom t 11i/ay concern/.1
Be it known that I, GEORGE A. CoLNoN, a citizen of the United States, residing at Washington, in the District of Columbia, have iuvented certain new and useful Improvements in Beam-Cali pers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
My invention relates to certain new and useful" improvements in beam calipers and has for its object to produce such a device that shall be extremely light and strong and capable of rapid and accurate adjustment and to provide means for enabling the graduations to be accurately and easily discerned.
To these ends my inventionconsists in the novel construction and arrangement of parts hereinafter fully described and afterward definitely pointed out in the claims, due reference being had to the accompanying drawings forming a part of this specification; wherein:
Figure l is a top plan View of myiinproved device. Fig. 2 is an end View thereof, and Fig. 3 a longitudinal section.
Referring to the drawings the letter A indicates a rod which is longitudinally slotted and has aiixed to one end thereof a jaw B. Within said slotted rod A is set a graduated plate or metallic strip C and secured therein in any suitable manner.
D indicates a movable jaw which is provided With a perforation adapting it to slide over the rod A and is split so as to straddle the graduated strip C and its ends provided with a clamping screw E whereby said jaw may be-locked upon the rod at any point to which it may be adjusted. Secured to the movable jaw D is a standard F carrying at its outer end a frame or casing G within which is pivoted a magnifying glass I'Iin such a manner that said glass may be swung upon its pivot over the graduations marked upon the strip C and thus enable the operator to quickly and accurately note the very smallest graduations necessary to effect a very close measurement. By pivoting the magnifying glass in the casing G, the same is protected from injury, dust and dirt, and it can be readily swung about its pivot tobring it immediately over the graduations.
By the aid of the magnifying glass described I am enabled to effect a liner and more accurate measurement than heretofore has been possible with devices of this nature and am able to read the graduations with more certainty.
What I claim isl. In a caliper square, the combination with a straight rod having a graduated scale thereon and a fixed jaw at one end thereof, of a movable jaw mounted on said rod and provided With a magnifying glass located over the graduated scale, substantially as shown and described and for the purpose specified.
2. In a device of the character described, the combination with the graduated bar and lixed jaw, of the movable jaw and a magnifying glass pivoted to said jaw and adapted to be swung over the graduated bar, substantially as described `and for the purpose specitied.
3. In a device of the character described, the combination of the rod A, the graduated bar C, the fixed jaw B,`the movable jaw D carrying the standard F, the casing G secured to the outer end of said standard and a magnifying glass pivoted within said casing and adapted to be swung over said graduated bar, substantially as shown and described and for the purpose specified.
In testimony whereof I aflix my signature in presence of two witnesses.
GEORGE A. COLNON.
Witnesses:
C. BERNARD WERLE, FRANCK D. J oHNs.
Publications (1)
Publication Number | Publication Date |
---|---|
US493683A true US493683A (en) | 1893-03-21 |
Family
ID=2562523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US493683D Expired - Lifetime US493683A (en) | George a |
Country Status (1)
Country | Link |
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US (1) | US493683A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040062514A1 (en) * | 2002-09-26 | 2004-04-01 | Fitel Usa Corp. | Methods and apparatuses for correcting mechanical twist in optical fiber |
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0
- US US493683D patent/US493683A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040062514A1 (en) * | 2002-09-26 | 2004-04-01 | Fitel Usa Corp. | Methods and apparatuses for correcting mechanical twist in optical fiber |
US7035525B2 (en) | 2002-09-26 | 2006-04-25 | Fitel Usa Corp. | Methods and apparatuses for correcting mechanical twist in optical fiber |
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