US1506847A - Boat-propelling mechanism - Google Patents

Description

Sept. 2, 1924.- 1,506,847

0. MAKI ET AL 30m PROPELLING MECHANISM Filed Oct. 8. 1921 2 8h0h8hoet 1 I N VEN TORS WITNESS:

Sept. 2, 1924. 1,506,847.?

0; MAKI ET AL BOAT PROPELLING MECHANISM Filed Oct. 8. 1921 2 ShoOtI-Sheet 2 Patented Sept. 2, 1924.

OTTO MAKI AND KARL ARLIN, 01" IAILMER, MASSACHUSETTS.

BOAT-PROPELLING MECHANISM.

Application filed October 8, 1921. Serial No. 506,482.

To all whom it may concern:

Be it known that we, O'r'ro MAKI and KARL ARLIN, citizens of Finland, residing at Palmer, in the county of Hampden and State of Massachusetts, have jointly invented cer tain new and useful Improvements in Boat- Propelling Mechanism, of which the following is a specification. I

This invention relates to improvements in boat propelling mechanism and more particularly to mechanism adapted for propelling small pleasure boats, fishing boats and the like. The mechanism is normally wind-actuated although provision is made whereby hand or foot power may be substituted therefor in emergency. With the foregoing and other objects in view the invention consists in the combination and arrangement of parts to be hereinafter fully described, pointed out in the appended claim and illustrated in the accompanying drawings which form a part of this application and in which Fig. 1 is a longitudinal sectional view through a boat provided with our propelling mechanism.

Fig. 2 is a fragmentary view of Fig. 1 illustrating the wind wheel and supports.

Fig. 3 is a plan view of Fig. 1 on line 3-3 thereof.

Figs. 4, 5 and 6 are details of the wing construction.

Fig. 7 is a section on line 7-7 of Fig. 1.

Fig. 8 is a detail of the foot propelled mechanism.

Fig. 9 is a section on line 99 of Fig. 1.

Like reference characters denote corresponding parts throughout the several views.

The reference numeral 1 denotes a small boat in the stern of which is placed the propelling mechanism comprising a frame formed of uprights and connecting bars 2, 3 and upon said frame the auxiliary frame composed of the long uprights 4 and the relatively short uprights 5 and connecting bars 6 is adjustably secured, the lower ends of the long uprights being connected by pivot bolts 7 to the aforesaid bars 3, said auxiliary frame in operative position being secured to one of the main frame bars 3 by a link and staple 8, 9 secured together by the lock 10.

In bearings 11 disposed on top of the auxiliary frame a crank shaft 12 is journaled and upon one end thereof the wind wheel disc 13 is made fast, said disc being formed with a plurality of radial face grooves 1& in which the ends of the wing bars 15 are secured, said bars 15 carrying the wings formed of the hinged sections 16 which sections are adapted to be opened and closed by the action of the wind. The wind blowing directly ahead or astern between the wing sections will open them and cause them to rotate the disc 13 and crank shaft, this rangement forming a wind motor.

A pitman 17 normally connects the crank portion of the crank shaft, by means of pin 18, to the longitudinally slotted portion 19 of the lever 20, said lever beingfulcrumed upon the pin 21, carried by one frame bar 3, and pivotally connected to the link 22 which is connected by the pin 22 and joint 23 to the double crank shaft 24 arranged upright in the casting 25 secured to the stern rail of the boat.

A propeller fork 26 is pivotally supported in the casting 27, secured to the boat, and in each prong of the fork a sectional winged propeller blade 28 is secured, the hinged sections of each blade opening and closing upon a pintle 29 extending longitudinally of the blade, operation of the blade sections being caused by water pressure as the blades are oscillated upon their pivotal supports 30 through the medium of the blade extensions 31 connected by joints 32 to the links 33 which are secured each to one of the cranks of the double crank shaft 2 1. As the disc 13 is rotated by wind action upon the wings 16 the pitman 17 is oscillated which, through the medium of the connections to the propeller blades oscillates the same in opposite directions thus causing them to open and close alternately and so to propel the boat through the water. As the lower or free ends of the propeller blades are moved away from the boat they are opened by water pressure, the resistance of the water to the blade movement in this direction propelling the boat forward; the reverse movement of the blade creates little water friction.

In the event the boat is becalmed at sea or the wind is at an angle to the wings it may be operated as follows: The pitman 17 is disconnected from the lever 20 and a pitman 34 eccentrically connected by pin 34 to the gear wheel 35 is connected to the pin 22 aforesaid, said pin being projected beyond the oint 23, said wheel 35 being operatively supported by the casting 36, carried by one frame bar 3, said wheel being in mesh with the large gear Wheel 37 theaxle 38 of Which is journaled in the bearings 39, the opposite ends of said axle 38 having fast thereupon the oppositely extendingarms 40' Whichare" connected by the links 41 to the slide arms 42, arranged in the slide bearings 43, and provided terminally With the pedals 44 adapted to be manipulated by theo'p'er'ato'r.

Should it be desired to operate the boat by hand-thepitman45 connected to the hand lever 46 fulcrumed to the bearing 43 is placed in engagement With-the pin 34 and the said lever oscillated to rotate the gear Wheel 37 and. actuate the connections thereof and so drive the propellers. The boat is steered by means of the lever 47 which extends through an elongated perforation 48 in the sternend' of the'boat-and is connected to or made integral with the propeller fork 26.

When the boat is not in use or When-it is propelled by man power the auxiliary frame may be folded down into the-position shown dottedin Fig. 1. This is done by 'disconnecting the staple and link 8, 9,-remoying three of the wings'a'n'd Wing bars,'a'n'd folding the Wings, when the several Wings Will be suspended from the disc 13 as shown in dotted lines, Fig. 1, and the auxiliary frame and connectionswillrest= upon the main frame as shown.

VVhatis claimed is The combination with a boat, of a frame, a'Wind motor carriedthereby, a'pair of cooperating propellers, poWer transmission mechanism releasably connecting said Wind motor and propellers, foot-controlled propelle'r actuating mechanism adapted for connection thereto interchangeably With-said wind motormechanism, said foot-controlled mechanism comprising a pair of slidearms, pedals carried by said arms, and steering means for said boat. I a i In testimony thatwe claim the foregoing a's'our own We have hereto affixed our signatures in the presence of a subscribingv vitnessl OTTO MAKI. I KARL ARLIN;

Witness":

- Z; J. BRANNICK. 1

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