US278225A - Calipers - Google Patents
Calipers Download PDFInfo
- Publication number
- US278225A US278225A US278225DA US278225A US 278225 A US278225 A US 278225A US 278225D A US278225D A US 278225DA US 278225 A US278225 A US 278225A
- Authority
- US
- United States
- Prior art keywords
- shaft
- bows
- calipers
- slotted
- shank
- 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
- 210000001699 lower leg Anatomy 0.000 description 16
- 210000003414 Extremities Anatomy 0.000 description 10
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
- B43L9/16—Features common to compasses, dividers, and callipers
- B43L9/20—Pivots
Definitions
- Our invention relates especially to that class of calipers employed in fine work, andhas for its object the production of a device which may be quickly and accurately adjusted,
- our invention consists, essentially, in bows of the usual shape pivoted in a.
- the bows are each provided with a short arm extending downward within the slotted 'head through a sliding shaft, which is operated by means of a nut at the extremity of the shank opposite to the slotted head.
- a slot is formed in the sliding shaft or bar, wherein is fitted a gib, held in place against the short arms by means of a spiral spring, said spring taking up all the back-slack as the arms are opened.
- Figure l is a View in side elevation of our improved calipers
- Fig. Fig. 3 is an enlarged cross-sectional view at line to aof Fig. 2.
- A are the bows of the calipers, pivoted upon a rivet, a, passing through the slotted head B of shank C.
- A' short arm, at, having rounded or curved edges extends from each bow A, as shown. These arms are about one-half the thickness of the bows and overlap each other.
- D is a slotted shaft, passing through shank C.
- Said shaft isvenlarged and provided with a slot at-d, within which the arms a play.
- a spiral spring, E is coiled around shaft D, and finds a hearing at one extremity against a gib, dgwhioh presses against the arms a. Theother extremity of the spring bears against a shoulder, 0, upon the interior of shank C. Shaft the bows open gradually, all back-slack being taken up by the spring as the shaft advances.
- a gage may be affixed to the calipers in order to facilitate setting toany predetermined width.
- the bows provided with short arms projecting into the slotted head of a shank wherein said bows are pivoted, the width between the points ofthe bows being regulated by means of a slotted shaft passing through the hollow shank of the instrument, said shaft having a slot therethrough at one extremity, wherein is located a gib engaging with the short arms of the bows and with a spring, the other extremity of the shaft bearing a screw-thread upon which a thumb-nut plays, substantially as shown and described.
- bows A having short arms a, hollow shank C, bearing slotted head 13, slotted shaft 1), gib of, spring E, and thumb-nut F, the whole combined and arranged to operate substantially as shown and described.
Description
(No Model.)
R. CRITTENDEN & G. HENRY.
OALIPERS.
No. 278,225. Patented May 221883.
INVENTORS lQd/M WW WITNESSES:
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'- ATTORNEY mwm n FEKERS. mummnwu. Wuhinglon. 0.1;
UNITED STATES PATENT OFFICE.
RALPH CRITTENDEN, OF HARTFORD, AND ROBERT Cr. HENRY, OF W'ATER- BURY, CONNECTICUT.
CALIPERS.
SPECIFICATION forming part of Letters Patent No. 278,225, dated May 22, 1883.
Application filed March 22, 1883. (No model.)
. ters of reference marked thereon.
Our invention relates especially to that class of calipers employed in fine work, andhas for its object the production of a device which may be quickly and accurately adjusted,
- and of such shape and construction as to be 2 is a vertical longitudinal section.
carried in the pocket with ease and safety.
To this end our invention consists, essentially, in bows of the usual shape pivoted in a.
slotted head upon a suitable shank. The bows are each provided with a short arm extending downward within the slotted 'head through a sliding shaft, which is operated by means of a nut at the extremity of the shank opposite to the slotted head. A slot is formed in the sliding shaft or bar, wherein is fitted a gib, held in place against the short arms by means of a spiral spring, said spring taking up all the back-slack as the arms are opened.
In the drawings, Figure l is a View in side elevation of our improved calipers, and Fig. Fig. 3 is an enlarged cross-sectional view at line to aof Fig. 2.
Like letters of reference, wherever they occur, indicate corresponding parts in all. the figures.
A are the bows of the calipers, pivoted upon a rivet, a, passing through the slotted head B of shank C. A' short arm, at, having rounded or curved edges extends from each bow A, as shown. These arms are about one-half the thickness of the bows and overlap each other.
D is a slotted shaft, passing through shank C. Said shaft isvenlarged and provided with a slot at-d, within which the arms a play. A spiral spring, E, is coiled around shaft D, and finds a hearing at one extremity against a gib, dgwhioh presses against the arms a. Theother extremity of the spring bears against a shoulder, 0, upon the interior of shank C. Shaft the bows open gradually, all back-slack being taken up by the spring as the shaft advances.
If desired, a gage may be affixed to the calipers in order to facilitate setting toany predetermined width.
Having now fully described our. invention, what we claim as new therein, and desire to secure by Letters Patent, is
1. In calipers, the bows provided with short arms projecting into the slotted head of a shank wherein said bows are pivoted, the width between the points ofthe bows being regulated by means of a slotted shaft passing through the hollow shank of the instrument, said shaft having a slot therethrough at one extremity, wherein is located a gib engaging with the short arms of the bows and with a spring, the other extremity of the shaft bearing a screw-thread upon which a thumb-nut plays, substantially as shown and described.
2. In calipers 0f the character herein specified, the combination, with the short arms of the bows, of the gib in the slotted shaft, and a spiral spring coiled around said shaft, substantially as and for the uses and purposes shown and described.
3. In an instrument of the character herein specified, bows A, having short arms a, hollow shank C, bearing slotted head 13, slotted shaft 1), gib of, spring E, and thumb-nut F, the whole combined and arranged to operate substantially as shown and described.
In testimony that we claim the foregoing
Publications (1)
Publication Number | Publication Date |
---|---|
US278225A true US278225A (en) | 1883-05-22 |
Family
ID=2347445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US278225D Expired - Lifetime US278225A (en) | Calipers |
Country Status (1)
Country | Link |
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US (1) | US278225A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2494287A (en) * | 1947-10-23 | 1950-01-10 | Thomas E Darnell | Center punch |
US6314654B1 (en) * | 1999-04-09 | 2001-11-13 | Simon Morissette | Livestock weight estimation device |
-
0
- US US278225D patent/US278225A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2494287A (en) * | 1947-10-23 | 1950-01-10 | Thomas E Darnell | Center punch |
US6314654B1 (en) * | 1999-04-09 | 2001-11-13 | Simon Morissette | Livestock weight estimation device |
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