US335853A - Plotter for drafting - Google Patents
Plotter for drafting Download PDFInfo
- Publication number
- US335853A US335853A US335853DA US335853A US 335853 A US335853 A US 335853A US 335853D A US335853D A US 335853DA US 335853 A US335853 A US 335853A
- Authority
- US
- United States
- Prior art keywords
- rules
- rods
- rule
- pivot
- pivots
- 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
- 210000003165 Abomasum Anatomy 0.000 description 2
- 235000014676 Phragmites communis Nutrition 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
- G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers
Definitions
- the object of my invention is to provide a new and improved drafting-instrument for making perspectives and like drawings,which instrument can also be used for drawing parallel lines, &c.
- the invention consists in a special combination of straight -edges, pivots, and connecting-rods, as will be fully set forth hereinafter, and then pointed out in the claims.
- A, B, and O are three straight-edges or rules, of which the latter-which is between the two former-is provided with a longitudinal slot, C.
- the right-hand ends of the rules A and B are connected with the right-hand end of the rule G by the connecting-rods D, pivoted by the pivots a Z) 0.
- Two rods, E, each having a longitudinal slot, E are pivoted to the left-hand ends of the rules A B O, and a pivot, F, is passed through the slot 0 and the slots E of the bars E.
- Rods G are pivoted to the right-hand end of the rule 0 by the pivot c, and pivots g on the left-hand ends of the rods G are passed through the slots E of the bars E.
- Bods H are pivoted on the ends of the rules A and B by the pi vots a b, and their left-hand ends are united by a pivot, 7L, passed through the slot 0 of the rule G.
- a rule, J is hinged to the upper edge of the rule A, and to the rule J a curved slotted arm, K, is secured, through the slot of which a binding-screw, L, is passed into the rule A.
- the several pivots are binding-screws for locking the several pieces in place in relation to each other.
- the top edges of the rules A B converge to the same point in whatever position they may be.
- the rule B is secured parallel with the edge of the drawingboard, and the rule A is moved toward or from the same to get the desired lines.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sheet Holders (AREA)
Description
(M00le].
M. E. THOMPSON.
PLOTTER FOR DRAFTING. No. 335,853. @Patented Feb. 9, 1886..
WITNESSES ATTORNEYS.
TTNTTJED STaTns PATENT @Trreia.
MILTON E. THOMPSON, OF BABTOYV, FLOR-IDA. r
PLQTTER FOR DRAFTING.
SPECIFICATION forming part of Letters Patent No. 335,853, dated February 9, 1886.
Application filed September 14, 1885. Serial No. 177,098. (Model) T ctZZ whom it may concern.-
Be it known that I, MILTON E. THOMPSON, of Bartow, in the county of Polk and State of Florida, have invented a new and Improved Drafting-Instrument, of which the following is a full, clear, and exact description.
The object of my invention is to provide a new and improved drafting-instrument for making perspectives and like drawings,which instrument can also be used for drawing parallel lines, &c.
Reference is to be had to the accompanying drawings, forming part of this specification, in which a plan View of my improved draft- 1 ing-instrnment is shown.
The invention consists in a special combination of straight -edges, pivots, and connecting-rods, as will be fully set forth hereinafter, and then pointed out in the claims.
A, B, and O are three straight-edges or rules, of which the latter-which is between the two former-is provided with a longitudinal slot, C. The right-hand ends of the rules A and B are connected with the right-hand end of the rule G by the connecting-rods D, pivoted by the pivots a Z) 0. Two rods, E, each having a longitudinal slot, E, are pivoted to the left-hand ends of the rules A B O, and a pivot, F, is passed through the slot 0 and the slots E of the bars E. Rods G are pivoted to the right-hand end of the rule 0 by the pivot c, and pivots g on the left-hand ends of the rods G are passed through the slots E of the bars E. Bods H are pivoted on the ends of the rules A and B by the pi vots a b, and their left-hand ends are united by a pivot, 7L, passed through the slot 0 of the rule G. A rule, J, is hinged to the upper edge of the rule A, and to the rule J a curved slotted arm, K, is secured, through the slot of which a binding-screw, L, is passed into the rule A. The several pivots are binding-screws for locking the several pieces in place in relation to each other. The top edges of the rules A B converge to the same point in whatever position they may be. The rule B is secured parallel with the edge of the drawingboard, and the rule A is moved toward or from the same to get the desired lines. The
5o distances from the pivot F to the pivots e 'pivots a b, a parallel rule is formed.
must always be greater than the distances from the pivot c to the pivots a b. When the distances from the pivot F to the pivots e are equal to the distances from the pivot c to the The edge of the rule A converges to the vanishing point, but not lines parallel with said edge. To remedy this, I have provided the additional rule J, which can be so adjusted that its continuation extends to vanishing point. The radius of the distance from the vanishing point to the pivot F can easily be adjusted by moving or adjusting the pivot F a greater or less distance from the left-hand end of the rule G.
Having thus described my invention, what I. claim as new, and desire to secure by Letters Patent, is
1. The combination, with the rules A B C, of the rods 1), connecting the rules A B 0, 7c and the adjustable rods E, connecting rules A B C at the opposite ends, substantially as shown and described.
2. The combination, with the rules A B (J, of the rods 1), pivoted to the rules A B G, and the slotted rods E, eonnectii'ig the rules A B O at the opposite ends, substantially as herein shown and described.
3. The combination, with the rules A B (l, the latter having the slot 0, of the rods 1), 3O connecting the rules A B O, the slotted rods E, pivoted to the rules A B, and the pivot F, passed through the slots C and E in the rule 0 and rods E, respectively, substantially as herein shown and described.
L. The combination, with the rules A B O. the latter having the longitudinal slot G, of the rods D, connecting the rules A B O, the slotted rods E, pivot F, the rods G, pivoted to the rule 0, and the pivots g on the ends of 0 the rods G, passed through the slots E, substantially as herein shown and described.
5. The combination, with the rules A B O, the latter having the slot 0, of the rods D, connecting the rules A B O, the slotted rods E, 9 5 pivoted to the rules A B, the pivot F, the rods H, pivoted to the ends of the rules A B, and the pivot h, passed through the ends of the rods 11 and the slot (3, substantially as herein shown and described.
6. The combination, with the rules A B G, the rule J, and the binding-screw L, substanthe latter having the slot 0, of the rods D, E,
tially as herein shown and described. G, and H, substantially as herein shown and MILTON F THOMPSON described. 5 7. The combination, with the rules AB 0, XVitnesses:
of the rods D E, connecting them, the rule J, C. E. REED, hinged on the rule A, the slotted arm K on 1 1). W. REED.
Publications (1)
Publication Number | Publication Date |
---|---|
US335853A true US335853A (en) | 1886-02-09 |
Family
ID=2404943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US335853D Expired - Lifetime US335853A (en) | Plotter for drafting |
Country Status (1)
Country | Link |
---|---|
US (1) | US335853A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2419725A (en) * | 1945-09-20 | 1947-04-29 | Gordon M Nosser | Perspective drawing instrument |
US2565724A (en) * | 1945-02-05 | 1951-08-28 | Boeing Co | Perspective drafting machine |
-
0
- US US335853D patent/US335853A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2565724A (en) * | 1945-02-05 | 1951-08-28 | Boeing Co | Perspective drafting machine |
US2419725A (en) * | 1945-09-20 | 1947-04-29 | Gordon M Nosser | Perspective drawing instrument |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US335853A (en) | Plotter for drafting | |
US1005661A (en) | Hand-shears. | |
US361243A (en) | Bevel | |
US1181388A (en) | Measuring instrument. | |
US296100A (en) | Ellipsograph | |
US625896A (en) | Pruning-shears | |
US205103A (en) | Improvement in wire-cutting tools | |
US310292A (en) | Calipers | |
US791251A (en) | Parallel-rule. | |
US349697A (en) | Adjustable head for t-squares | |
US985132A (en) | Try-square. | |
US177179A (en) | Improvement in bread-cutters | |
US1065046A (en) | Framing-square. | |
US219784A (en) | Improvement in tops for children s carriages | |
US541749A (en) | George harris | |
US418256A (en) | Bevel | |
US299856A (en) | Chalk-sharpener | |
US335796A (en) | Alexander cullon | |
US532001A (en) | Calipers or dividers | |
US353242A (en) | Oblando e | |
US1012289A (en) | Compound-lever shears. | |
US127210A (en) | Improvement in protractors and parallel rulers | |
US646238A (en) | Shears. | |
US749112A (en) | Carpenter s folding square | |
US500727A (en) | T-square |