GB190801331A - Improvements in Propellers. - Google Patents

Improvements in Propellers.

Info

Publication number
GB190801331A
GB190801331A GB190801331DA GB190801331A GB 190801331 A GB190801331 A GB 190801331A GB 190801331D A GB190801331D A GB 190801331DA GB 190801331 A GB190801331 A GB 190801331A
Authority
GB
United Kingdom
Prior art keywords
shaft
blades
boss
tooth
engages
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
Arthur Wyman Learnard
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 GB190801331A publication Critical patent/GB190801331A/en
Expired legal-status Critical Current

Links

Abstract

1331. Learnard, A. W. Feb. 23, 1907, [date applied for under Section 91 of Patents &c. Act, 1907]. Screw propellers. -Comprises improvements in the kind of propeller described in Specification No. 8470, A.D. 1903, in which the blades are capable of folding into the plane of the axis of the shaft. The shaft a is screwed into the boss b and provided with a disk y, which may engage the extensions g on the blades. A collar u is secured on the shaft inside the hub, and is provided with teeth v, w engaging similar teeth on the interior of the boss a. When the shaft is rotated to prope the vessel ahead, the tooth w engages the tooth t and rotates the boss, the pressure of the water on the blades maintaining them in their open position. When the shaft is reversed, it moves longitudinally until the tooth v engages the corresponding tooth on the interior of the boss, and the disk then prevents the blades from closing. If the vessel is propelled by means other than the shaft, the blades automatically fold down.
GB190801331D 1907-02-23 1908-01-20 Improvements in Propellers. Expired GB190801331A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US190801331XA 1907-02-23 1907-02-23

Publications (1)

Publication Number Publication Date
GB190801331A true GB190801331A (en) 1908-04-02

Family

ID=32656504

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190801331D Expired GB190801331A (en) 1907-02-23 1908-01-20 Improvements in Propellers.

Country Status (1)

Country Link
GB (1) GB190801331A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK178074B1 (en) * 2013-10-14 2015-05-04 Flexofold Aps Folding propeller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK178074B1 (en) * 2013-10-14 2015-05-04 Flexofold Aps Folding propeller
US10214269B2 (en) 2013-10-14 2019-02-26 Flexofold Aps Folding propeller

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