US1267712A - Boat-propeller. - Google Patents

Description

H. A. W. THOMASSON.

BOAT PROPELLEB. APPLICATION FILED NOV. 1, 1917.

Patented May 28, 1918.

2 SHEETS-SHEET I.

R m m Her/12 1114: T homassdn B imdd aaxh'z/ A TTORNE Y H. A. W. THOMASSON.

BOAT PROPELLER APPLICATION FILED .NOV 1, I917.

Patented May 28, 1918.

2 SHEETS*SHEET 2.

INVENTOR. Henry JLW Thomasson A TTORNE Y HENRY A. W. THOMASSON, 0F BELLINGHAM, WASHINGTON.

BOAT-PBOPELLER.

Application filed November 1, 1917.

To all whom it may concern:

Be it known that I, HENRY A. W. THOMASSON, a citizen of the United States, and residing at Bellingham, W'hatcom county, Washington, have invented a new and useful Boat-Propeller, of which the following is a specification.

My invention relates to improvements in boat propellers in which paddlesare forced horizontally through the water and returned above the water, and the objects of my invention are to provide a propeller suited for use in shallow water, canals, and where high speed is desired.

I attain these objects by the mechanism illustrated in the accompanying two sheets of drawings, in which- Figure 1 is a plan view of the propelling mechanism, Fig. 2 is a side elevation of Fig. l partly in section on line c-d of Fig. 1, Fig. 3 is a side elevation of the stern end of a boat with my improved propeller attached drawn on a smaller scale, Fig. & and

Fig. 5 are separated elevation views of one of the paddle rollways.

Similar characters refer to similar. parts throughout. Certain parts are broken away in order to show other parts hidden thereby.

More particularly: The boat 1 has an outrig, stern extension comprising frame beams 1, 1, 1 and 1. gine shaft 2 extends rearward passing through the stern of the boat in gland bearing 2. The rear end of shaft 2 is mounted in a bearing on middle frame beam 1 and forward of said bearing worm 2 is rigidly mounted on said shaft. A crank shaft Sis mounted athwart in bearings 3, 3, etc. On the middle of the crank shaft is rigidly mounted worm wheel 3 engaged with worm 2. On the crank shaft are two pairs of diametrically related cranks 3, 3 and 3, 3. The front ends of connecting rods 4, 4 are connected to cranks 3, 3, and connecting rods 5, 5 have their front ends connected to cranks 3, 3. The stern ends of connecting rods 4, 4. are connected rigidly with paddle 6, and the stern ends of connecting rods 5, 5 are rigidly connected to paddle 7 Paddle 6 has threeparallel, vertical blades placed athwart and connected by extended end pieces 6, 6. To each end of paddle 6 is fastened angle plate 6, on each of which is a vertical lug 6. On each of lugs 6, 6 is mounted a roller placed to roll in one of two facing rollways 8, 9 and 8, 9. Each of said Specification of Letters Patent.

From engine 2 en-,

Patented May 28, 1918.

Serial No. 199,616.

rollways comprises a fixed rollway 8 and a pivoted rollway 9. Rollway 8 has a middle horizontal part 8 ending in upward inclines 8 and 8 which respectively terminate above in turn loops 8 and 8. Each of rollers 6 may also roll in one of two upper rollways 9, 9, pivoted at 9, 9 and each having downwardly inclined ends 9 and 9 so located that when rollway 9 turns on pivot 9 to cause its stern end to move to its lower limit inclined rollway end 9 registers with turn loop 8, and the forward inclined rollway end 9 is above and out of register with forward turn loop 8. Similarly, when the forward inclined rollway 9 is depressed to its lower limit it registers with turn loop 8 and 9 is out of register with turn loop 8 as shown in dotted lines in Fig. 2 and in full lines in Fig. 4:. A pair of standards 9, 9 project upward from the top of each of upper rollways 9 and to the upper end of each is attached slide rod 9 parallel to rollway 9. Slidable on each of rods 9, 9 is a counterweight 9. One set of upper and lower rollways 8 and 9 is attached to the inside of frame beam 1 and the other is fastened to the port side of middle frame beam 1, said rollways facing each other. The two counterweights 9, 9 are connected by a rod 9 to the middle of which is engaged the stern end of connecting rod 9. To the inside of frame beam 1 and the starboard side of middle frame beam 1 are fastened two facing lower rollways 10, 10 and two upper facing rollways 11, 11, similar in all respects to the facing lower and upper rollways 8, 8 and 9, 9; Oounterweights 11, 11 on upper rollways 11, 11 are connected by rod 11 to the middle of which is engaged the stern end of connecting rod 11. Paddle 7 and rollers 7, 7 are respectively similar in all respects to paddle 6 and rollers 6, 6. Athwart the stern of boat 1 is mounted rocker shaft 12 in bearings 12, 12 fastened to said boat. Master hand lever 12 is rigidly mounted on one end of shaft 12. It has a dog 12. engageable ineach of two notches 12 and 12 in ratchet 12 which is rigidly attached to said boat. Hand lever 13 is mounted for revolution onshaft 12 between set ring 12 and ratchet 13. Ratchet 13 is rigidly mounted on shaft 12 and has three notches 13, 13 and 13 in each of which a dog 13 pivoted to lever 13 may engage. The forward end of connecting rod 9 is connected to hand lever 13. Hand lever 14: is mounted for revolution on shaft 12 between set ring 12 and ratchet 14c. Ratchet 14: is rigidly mounted on shaft 12 and has three notches respectively registering with notches 13 13 and 13* in ratchet 13. Hand lever ll has a pivoted dog which may engage in each of said notches in ratchet 14. When 12, 13 and 1 l are in their position shown in full lines counterweights 9 9 and 11 11 are in their rear positions shown in full lines. But by moving hand lever 12 to its dotted position shown in Fig. 2, dog 12 engages in notch 12 and counterweights 9, 9 and 11 11 are moved to and retained in their forward positions shown in dotted lines in Fig. 2. But, since hand lever 13 is loose on shaft 12, it can be moved independently of master lever 12 and retained in either of three positions by dog 13 en gaging in either of notches 13 13 or 13; respectively retaining counterweights 9 9 in their rear positions, shown in full lines in Fig. 1 and Fig.2 and Fig. i, their forward positions, shown in dotted lines in Fig. 2, or

- in their middle positions, shown in full lines in Fig. 5. l i hen counterweights 9 9 are in their rear positions they cause the rear ends of upper rollways 9, 9 to incline downward. When said counterweights are in their forward positions, shown in dotted lines in Fig. 2, they cause the forward ends of said rollways to incline downward. But when said counterweights are in their central positions, shown in Fig. 5, said rol ways are free to remain with either end down. Similarly the inclination of upper rollways 11, 11 is controlled by the positions of weights 11 11 In operation: Assume that engine 2 re volves crank shaft 3 in a counterclockwise direction, Fig. 3 and Fig. 2, then paddle 6 is being driven rearward as indicated by the arrows. The continued revolution of cranks 3," 3* drives rollers 6 6 upward on inclines 8 8 until they strike the lower ends of rollways 9", causing them to move upward and permit said rollers to pass into loops 8 where their direction of motion reverses and they leave said loops and pass up in inclines 9 across rollways 9 down in rollways 9 where the weight of paddle 6 overbalances counterweight-s 9 and causes the forward ends of the upper rollways to tip down and make inclines 9 register with loop 8 where their direction of motion is reversed as referred to when they occupied loops 8. Meanwhile the forward ends '9 have returned to their former positions, Fig. 2, under pressure of weights S and when rollers 6 move rearward they pass down inclines 8 and across horizontals 8 to their former full-line positions in Fig. 2. Thus paddle 6 has been caused to pass through the full round of its course. The water surface is represented by line -6- When rollers 6 are in upper rollways 9- paddle 6 is entirely out of the water, and when said rollers are on lower rollway 8 the paddle is immersed. During the rearward travel of the rollers in rollway 8, therefore the boat is caused to move forward. The movement of master hand lever 12 forward to its dotted position causes weights 9 to occupy their forward position which tilts the forward end of rollways 9 downward to stand in their dotted position of Fig. 2. Then rollers 6 on leaving loop 8 can not enter incline 9 and they return to rollway 8 over which they move in a forward direction and paddle 6 forces the boat backward. @n leaving loops 8 the rollers enter inclines 9 and pass over rolle way 9 moving rearward while the paddle is above the water. Thus the reversal of the paddle movement is accomplished by moving the master lever. As noted, hand levers 13 and 1d are moved by lever 12, thus the direction of travel of both paddles 6 and 7 are simultaneously controlled by themaster lever. However, hand levers 13 and 14lcan each be moved independently and it is ohvious, from the foregoing description, that the direction of movement of both paddles in their cycles can be separately controlled by said levers and the boat can be turned in either direction as desired by causingpaddles6 and 7 to move in opposite directions in said ycles. Also by placing levers 13 and 14! in their middle positions both pad- 1 dles are prevented from entering the water and have no effect on moving the boat.

The illustrated construction of the paddles give them a good hold on the water, and the shape. of the rollways cause them to enter and leave the water with little waste efiort.

lhe distance separating the upper and, lower rollways can be suflicient inpractice to permit the paddles to be entirely out of the water when their rollers are in the upper rollway even in rough water.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is- 1. in combination, a paddle, a roller mounted on said paddle, a fixed lower rollway, a pivoted upper rollway, mounted to rock into and out of register with said lower rollway, and means to cause said roller. to traverse said rollways in opposite directions.

2. In combination, a paddle, a roller mounted on said paddle, a fined lower rollway, a pivot-ed upper rollway mounted to rock into and out of register with said lower rollway, and means to cause said roller to. move back and forth in said upper rollway.

3. In combination, a paddle, a roller mounted on said paddle, a fixed lower rollway, a pivoted upper rollway mounted to permit its ends to alternately rock into and out of register with the ends of said lower rollway, and means to cause either the forward or rearward end of said pivoted rollway to automatically register with either the forward or rearward end of said fixed rollway, respectively.

4. In combination, a paddle, a roller mounted on said paddle, a fixed lower rollway having upwardly inclined ends terminating in return loops, a pivoted upper rollway, having downwardly inclined ends, mounted to cause each of said ends to come into and depart from registering with one of the said return loops, as said upper rollway rocks on its pivot.

5. In combination, a paddle, a roller mounted on said paddle, a fixed lower rollway, a pivoted upper rollway mounted to alternately register with each end of said lower rollway, a longitudinal slide rod on said upper rollway, a counterweight movable on said slide rod, and means to move said weight to predetermined locations on said slide rod and maintain the same therein.

6. In combination, a boat; a prime mover in said boat; an outrig extension on the stern of said boat; a shaft mounted for rocking on the stern of said boat; one fixed hand lever, having a dog, mounted on said rocker shaft; a plurality of loose hand levers, each having a dog, mounted on said rocker shaft; a ratchet, having two'notches engageable with the dog of said fixed lever, mounted on said boat; a plurality of ratchets each having three notches, rigidly mounted on said rocker shaft, the said three notches on each ratchet being engageable with the dog on one of said loose levers; a shaft having a plurality of cranks mounted for turning on said extension; power-transmission connections between said prime mover and said crank shaft; a plurality of pairs of facing paddle rollways, the lower two of which are rigidly attached to said extension and the upper two are pivoted to said extension; a slide rod mounted on each of said upper rollways; a counterweight slidable on each of said slide rods, the weights on each pair of rollways being rigidly connected; a paddle for each pair of said rollways, each paddle mounting a pair of rollers mounted on a pair of said rollways; two connecting rods rigidly fastened to each of said paddles and connected to a registering pair of cranks on said crank shaft; and a connecting rod between each pair of connected counterweights and one of said loose hand levers.

Signed at Bellingham, in the county of Whatcom and State of Washington this 18th day of October, 1917.

HENRY A. w. THOMASON.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. 0.

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