US103926A - Improvement in calipeks - Google Patents
Improvement in calipeks Download PDFInfo
- Publication number
- US103926A US103926A US103926DA US103926A US 103926 A US103926 A US 103926A US 103926D A US103926D A US 103926DA US 103926 A US103926 A US 103926A
- Authority
- US
- United States
- Prior art keywords
- section
- calipers
- limb
- improvement
- screw
- 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
- 210000003414 Extremities Anatomy 0.000 description 16
- 230000000875 corresponding Effects 0.000 description 2
- 235000020004 porter Nutrition 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
-
- 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
- G01B3/16—Compasses, i.e. with a pair of pivoted arms
Definitions
- This invention relates to a newand useful improvement in calipers, by which they are more readily and delicately adjusted to demonstrate spaces, diameters, or dimensions;
- the invention consists in forming one limb of the calipers in two parts or sections, which are pivoted together near thecenter of one section andthe'end of the other, so that when the latter section is locked to the other limb, the centrally-pivoted section may, by a screw or other device, he vibrated upon its pivot, so as to be nicely adjusted and accurately indicate the space or dimension sought to be determined.
- Figure 1 is a side elevation
- Figure 2 is alongitudinal section
- Figure 3 is a perspective view of the calipers and mode of applying and adjusting them.
- A represents the rigid limb, constpncted in the usual manner
- ' B is the jointed limb.
- c is the section, which is pivoted, in conjunction with limb A, upon the screw-bolt a.
- the section [I is pivoted near its center to the end of section 0, bythe section 0, as is plainly shown.
- f is'a set-screw, which moves in a corresponding female screw, cut in stud 9, this stud being secured in section 0.
- h is a spring, one end of which is secured in stud g, passing thence around and at a short distance from thumb-nut b.
- the calipersare set at about'the diameter of the cylinder, and locked in that position, by actuating thumb-nut b upon bolt a; then, while holding the calipers in the right hand, 0, as shown in fig. 3,
Description
H. K. PORTER.
Calipers. I No. 103,926. Patented June 7, 1870.
new fishes agutrnt dtfiflirr.
Letters Patent No. 103,926, dated June 7, 1870.
W IMPROVEMENT IN CALIPERS.
The Schedule referred to in these Letters Patent and making part of the same.
To all whom it may cancer-n Be it known'that I, HENRY K. PORTER, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement;
in Calipers; and I do hereb declare that the following, taken in connection with the drawing which accompanies andforms part of this specification, is a description of my invention suflicient to enable those skilled in the art to practice it.
This invention relates to a newand useful improvement in calipers, by which they are more readily and delicately adjusted to demonstrate spaces, diameters, or dimensions; and
The invention consists in forming one limb of the calipers in two parts or sections, which are pivoted together near thecenter of one section andthe'end of the other, so that when the latter section is locked to the other limb, the centrally-pivoted section may, by a screw or other device, he vibrated upon its pivot, so as to be nicely adjusted and accurately indicate the space or dimension sought to be determined.
Figure 1 is a side elevation;
Figure 2 is alongitudinal section; and
Figure 3 is a perspective view of the calipers and mode of applying and adjusting them.
Similar letters of reference indicate like parts in the several figures.
In the drawing,-
A represents the rigid limb, constpncted in the usual manner, and
' B is the jointed limb.
c is the section, which is pivoted, in conjunction with limb A, upon the screw-bolt a.
The section [I is pivoted near its center to the end of section 0, bythe section 0, as is plainly shown.
f is'a set-screw, which moves in a corresponding female screw, cut in stud 9, this stud being secured in section 0.
h is a spring, one end of which is secured in stud g, passing thence around and at a short distance from thumb-nut b.
It is, at the apex of the curve, held under the lock 1', from-whence it passes to the upper end of section (1, bearing against the same, and constantly pressing it against screw f.
.The method of using and advantages of these calipers are as follows:
Suppose the inside diameter of cylinder'D is to be determined, the calipersare set at about'the diameter of the cylinder, and locked in that position, by actuating thumb-nut b upon bolt a; then, while holding the calipers in the right hand, 0, as shown in fig. 3,
and inserting the feet of the calipers in the cylinder, by actuating screw f, the diameter can be exactly determined, as section cl is pivoted at 0, near its. center; therefore, the movements of screw f are sufiiciently slow and delicate to allow of any desired accuraoyof adjustment. 7 L
I do not claim, in the abstract, constructing calipers or similar instruments with a jointed limb; but
What I do claim as new, and desire to secure by Letters Patent, is
The combination of rigid limb A and pivoted limb B, constructed with sections 6 and d, actuatingscrew 1, and spring 71, substantially as and forthe purposes specified. 1
H. K. PORTER. Witnesses: I
EBEn Huronnvsos, EDWARD F. HALL.
Publications (1)
Publication Number | Publication Date |
---|---|
US103926A true US103926A (en) | 1870-06-07 |
Family
ID=2173411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US103926D Expired - Lifetime US103926A (en) | Improvement in calipeks |
Country Status (1)
Country | Link |
---|---|
US (1) | US103926A (en) |
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0
- US US103926D patent/US103926A/en not_active Expired - Lifetime
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