US11420A - Compass and calipees - Google Patents
Compass and calipees Download PDFInfo
- Publication number
- US11420A US11420A US11420DA US11420A US 11420 A US11420 A US 11420A US 11420D A US11420D A US 11420DA US 11420 A US11420 A US 11420A
- Authority
- US
- United States
- Prior art keywords
- legs
- compass
- arms
- calipees
- instrument
- 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
- 210000003141 Lower Extremity Anatomy 0.000 description 2
- 210000003813 Thumb Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000630 rising 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
- the lower extremity of the legs A, A, of the instrument may be straight or curved, as may best suit the purpose to which they are to be applied.
- the toggle arms C, C are pivotedat D, by a pin common to both, and upon which they may work in the direction of the sweep of the legs of the instrument, while they should be prevented from yielding in any other direction.
- the other ends of the arms O, C are pivoted-one to each of the legs at a, athe legs at that point being suitably countersunk to receive the ends of said arms, or any other' suitable hinged joint maybe made.
- the arms at D are pivoted or hinged, to the lower end of a screw rod E, of suitable ⁇ length to allow for the full sweep of the legs of the instrument, said rod passing up through a bur or nut F, which has a female screw cut in it.
- the bur or nut F extends through the head or yoke Gr, to which the legs are pivoted or hinged at b, Z), and has upon its upper part which projects, above said head, a
- milled thumb piece by which it may be turned-said bur being so connected with the head as that it may turn'therein without rising or falling with the screw, by which means the legs may be operated either way and the screw or bur which operates fthein, hold them from moving in both direct-ions, when properly set.
Landscapes
- Tables And Desks Characterized By Structural Shape (AREA)
Description
UNITED sTATEs PATENT OFFICE.
JOHN E. EARLE, OF LEIOESTER, MASSACHUSETTS.
COMPASS AND CALIPERS.
Specification of Letters Patent No. 11,420, dated August 1, 1854.
To all whom 15 muy concern Be it known that I, JOHN E.` EARLE, of Leicester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Compasses, Dividers,'or Calipers; and I do hereby declare the following to be a full, clear,
. method of opening, closing, and holding the legs of compasses or calipers.
The lower extremity of the legs A, A, of the instrument, may be straight or curved, as may best suit the purpose to which they are to be applied. The upper parts B, B, being curved so as to receive the toggle arms O, O, by which the legs are operated. The toggle arms C, C, are pivotedat D, by a pin common to both, and upon which they may work in the direction of the sweep of the legs of the instrument, while they should be prevented from yielding in any other direction. The other ends of the arms O, C, are pivoted-one to each of the legs at a, athe legs at that point being suitably countersunk to receive the ends of said arms, or any other' suitable hinged joint maybe made. The arms at D, are pivoted or hinged, to the lower end of a screw rod E, of suitable `length to allow for the full sweep of the legs of the instrument, said rod passing up through a bur or nut F, which has a female screw cut in it.
The bur or nut F, extends through the head or yoke Gr, to which the legs are pivoted or hinged at b, Z), and has upon its upper part which projects, above said head, a
milled thumb piece by which it may be turned-said bur being so connected with the head as that it may turn'therein without rising or falling with the screw, by which means the legs may be operated either way and the screw or bur which operates fthein, hold them from moving in both direct-ions, when properly set.
The forms of these several parts may be modified or changed without changing the general principle of -the instrument, and I do not confine myself to thev precise arrangement represent-ed, reserving the right to modify so long as Ido not depart from the general construction of the instrument.
Having thus fully described the nature of m'y invention what I claim therein as new and desire to secure by Letters `Patent is- The combination of the hinged `arms O, screw rod E, and nut F, with the hinged legs of compasses or dividers, and calipers, for the purpose of moving or holding said legs in both directions anywhere within the line of their sweep, substantially as described. i
. JOHN E. EARLE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US11420A true US11420A (en) | 1854-08-01 |
Family
ID=2071756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11420D Expired - Lifetime US11420A (en) | Compass and calipees |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US11420A (en) |
-
0
- US US11420D patent/US11420A/en not_active Expired - Lifetime
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