US840944A

US840944A - Hand-power propeller.

Info

Publication number: US840944A
Application number: US32515406A
Authority: US
Inventors: Nels Johnson
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-07-07
Filing date: 1906-07-07
Publication date: 1907-01-08
Anticipated expiration: 1924-01-08

Description

No. 840,944. PATENTED JAN. 8,1907. l

N. JOHNSON.

HAND POWER PROPELLER.

APPLICATION IILIID JULY?, 190e.

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APPLICATION FILED JULY 7. 1906.

2 SHEETS-SHEET 2' x I l /NVENKTOH ela* fa/Z22 son 5y ATTORNEYS UNITED sTATEs PATENT oEEioE.

NELS JOHNSON, OF CHIOXOO, ILLINOIS. I i

HAND-POWER P-ROPELLER.

Specification `of Letters Patent.

Patented Jan. 8, 1907.

To all whom it mag/concern.-

Be it known that I, NELs JOHNSON, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Hand-Power Propeller, of which the following is a full, clear, and exact description.

My invention relates to hand-power propellers, and has for its object to provide means for propelling small boats upon parklakes and similar places without the use of oars, and thereby enable such boats to move about freely without interfering with each other. This I accomplish by the means illustrated in the accompanying drawings,in which drawings like characters of reference indicate like parts throughout the views, and i-n whichp Figure 1 is a side elevation of a device embodying my invention. Fig. 2 is a plan of the same. Fig. 3 is a vertical longitudinal section taken on the line 3 3 of Fig. 2. Fig. 4 is a horizontal section taken on the line 4 4 ofy Fig. 3, and Fig. 5 isa transverse section taken on the line 5 5 of Fig. 3.

As illustrated in the drawings, 1 represents a main shaft journaled upon standards 10 and provided on one end with a propeller 2. Pinions 3 are formed with sleeves 3'CL freely mounted upon the shaft 1 and provided on one end with teeth adapted to engage corresponding teeth formed on the end of a sleeve 4, having a reciprocating movement upon a spacing-sleeve 21, secured to theshaft 1, and

provided with a feather 21a, adapted to engage thesleeve 4 and permit such longitudidal movement of the sleeve on the spacingsleeve 21 The pinions 3 are held in place by means of collars 32, provided with set-screws 32a. The sleeve 4 is freely connected with a vertical lever 11, pivoted to a standard 12, the lower end of said lever 11 having a pivotal connection with a horizontal bar 13, which is pivoted at one end to a lever 14 and at its opposite end to a bell-crank lever 22. The lever 14 is provided on one end with a slot which engages a pin secured to a crank 15,

. which is mounted on a vertical standard 16,

having a crank 17 secured thereto and provided with a handle 18, the crank 17 being adapted to be turned on a table 33, provided wtih stops 33a. The bell-crank lever 22 is secured in place by the pivot 22a at the angle of said lever, the rearwardly-extending arm4 of said lever being provided with a slot which loosely engages a stud secured to a bar 23,

having a lateral notch 23a and secured to a plate 24, which has a reciprocating movement in guides or ways 25, secured to a baseplate. An upright lever 26 is pivotally secured to a supported bracket 27 and connected lat its lower end with a spiral spring 30, the other end of the spring being secured to a fixed bracket-arm31. The upper end of the lever 26 is preferably formed into a yoke provided with pins which engage a groove formed `in the hub of a clutch 28. This clutch is cupped, the circumferential flange thereon being flared., andy thus adapted to engage a correspondingly coniform iiange formed ona socket 29. The clutch 28 has a limited reciprocating movement on the shaft 1 by any suitable means. Laterally-toothed gears 5 a're mounted upon shafts 20, that are journaled on upright standards 19. The peripheries of these gears are provided with ratchetteeth 6, adapted to be engagedby pawls 8,

said pawls being pivotally attached oppositely to areciprocating lever 7, journaled on the inner end of the shafts 20. The pawls 8 may be held in engagement with the ratchetteeth of the periphery ofthe gear by means of springs 34.

Whenthedevice is in operation, a reciprocating movement of the lever 7 engages the pawls 8 with the ratchet-teeth 6 of the gears 5 and causes the gears to rotate in opposite directions, The ratchet-'teeth of one gear being oppositely disposed to those of the other gear, when the inner face of said gears are in engagement with one of the pinions 3, secured to the shaft 1, said shaft rotates' in its bearings, thereby rotating the propeller 2. The reciprocating sleeve 4 is shorter in length than the distance between the pinions 3 and is thereby adapted to be brought in engagement with either one of said pinions or separated from both of them. When one end of the sleeve 4 is brought in engagement with one of the vpinions 3 and the gears 6 rotated by means ofthe lever 7 ,the shaft 1 will rotate in one direction but when said sleeve is disengaged from that pinion and brought into engagement with the yopposite pinion the shaft and the propeller attached thereto will rotate in' the opposite direction, and when the ends of the sleeve 4 are released from both of said inions a rotary movement of the gears 6 wil cause no rotation of the shaft 1, for the reason that the pinions 3 are journaled freely on such shaft. When itis desired to rotate the propeller-blades in any IOO IIC

bring the opposite end of the sleeve 4 in en-y gagement with its adjacent pinion 3. At times, however, it is desired to stop the motion of the shaft 1 as quickly as possible. This is accomplished by releasing the reciprocating sleeve 4 from engagement with either of the pinions 3 by means of the leverv 11 and its connected mechanism. The lower end of said leverbeing connected with the var 13, which is pivoted to the bell-crank leber 22, a movement of the lower end of the lever 11 causes a transverse movement of the reciprocating bar 23. When the sleeve 4 is released from engagement with both of the pinions 3 the reciprocating bar 23 is ar# ranged with the notch or recess 23EL in line with the lower end of the lever 26. When in such position, the spring 30 draws such lower end of the lever 26 into engagement with the notch 23a and brings the head or clutch. 28 into frictional engagement with the socket 29, thereby operating as a brake and stopping further rotation of the shaft 1. When the end of the sleeve 4 is in engagement with either of the pinions 3, the lower end of the lever 26 is pressed backward by means of the ed ge of the plate 23, which thereby draws forwardly the upper end of the lever 26 and the head 28 secured thereto and releases such head from en agement with the socket 29. Hence when tY e shaft 1 is being rotated by the lever 7 the head /28 is always free from engagement with the socket 29, and when the sleeve is out of engagement with the pinions 3, so that the shaft cannot be rotated by means of the lever 7, the head 28 is brought into contact with the vsocket 29 by means of the spring 30 and instantly stops any further rotation of the shaft 1.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1.- The combination with a rotating shaft,

of a propeller secured thereto, pinions journaled freely on said shaft, a sleeve having a longitudinal movement on the shaft, adapted to. engage said pinions, laterally-toothed gears provided with ratchet-teeth on their peripheries, and a pivoted lever provided with a pawl adapted to engage the teeth of said gears, substantially as shown and described.

2. The combination with a rotating shaft, of a propeller secured thereto,l a frictionclutch secured to said shaft, a spring-actuated lever adapted to control said-clutch, and a bar provided with a notch adapted to bear against the lower end of the said lever and movable transversely of said lever, substantially as shown and described.

3. The combination with a rotating shaft, of a propeller mounted thereon, pinions journaled freely on said shaft, a sleeve having a longitudinal movement on the shaft and adapted to engage said pinions, laterally.

5. The combination with a rotating shaft,

of a propeller secured thereto, pinions journaled freely on said shaft -laterally-toothed gears engaging said pinions, a sleeve movable longitudinally on said shaft, a friction-clutch secured to the shaft, and mechanism connecting said sleeve and clutch adapted to release the clutch when said sleeve is in engagement with either of said pinions, substantially as shown and described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

NELs JOHNSON.

Witnesses:

MARTIN BERG, OLE BAKKE.

IOO