GB191322117A - A Plotting Board for use in Manoeuvring Ships. - Google Patents

A Plotting Board for use in Manoeuvring Ships.

Info

Publication number
GB191322117A
GB191322117A GB191322117DA GB191322117A GB 191322117 A GB191322117 A GB 191322117A GB 191322117D A GB191322117D A GB 191322117DA GB 191322117 A GB191322117 A GB 191322117A
Authority
GB
United Kingdom
Prior art keywords
scale
ring
zero
graduated
plotting
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
Application number
Inventor
Herbert Charles John Grant
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB191322117A publication Critical patent/GB191322117A/en
Expired legal-status Critical Current

Links

Abstract

22,117. Grant, H. C. J. Oct. 1. Protractors.-Consists of a modified form of the plotting - board described in Specification 9145/07. The dial A, having a graduated rim a, is surrounded by a revoluble ring c to which is secured an arm acting as a guide for the graduated T-shaped cursor d, which can move along the diameter of the ring c passing through the zero of the vernier &c. e. On the cursor are the radial scale h and the transverse scale j, the units of these two scales being of the same length. The scale h is read against a mark h<1> on the ring c, and the scale j is graduated on each side of a zero, which is at the centre of the dial when the zero of the scale h is opposite the point h<1>. The ring c also carries the verniers &c. f, g, at 180 degrees apart. The instrument can be used for solving various problems in navigation by plotting.
GB191322117D 1913-10-01 1913-10-01 A Plotting Board for use in Manoeuvring Ships. Expired GB191322117A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191322117T 1913-10-01

Publications (1)

Publication Number Publication Date
GB191322117A true GB191322117A (en) 1914-07-30

Family

ID=32646591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191322117D Expired GB191322117A (en) 1913-10-01 1913-10-01 A Plotting Board for use in Manoeuvring Ships.

Country Status (1)

Country Link
GB (1) GB191322117A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534288A (en) * 1945-10-16 1950-12-19 Jr Charles W Merriam Maneuvering board attachment
US2548202A (en) * 1949-11-18 1951-04-10 Theron P Davenport Maneuvering machine
US3755904A (en) * 1971-01-29 1973-09-04 Gen Control Corp Marking instrument for dental castings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534288A (en) * 1945-10-16 1950-12-19 Jr Charles W Merriam Maneuvering board attachment
US2548202A (en) * 1949-11-18 1951-04-10 Theron P Davenport Maneuvering machine
US3755904A (en) * 1971-01-29 1973-09-04 Gen Control Corp Marking instrument for dental castings

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