US1722182A - Propeller - Google Patents

Description

July 23, 1929.

J. R. TAYLOR I PROPELLER 'Filed Sept. 19, 192'! I Jnzwfifgla k ATTORNEY Patented July 23, 1929.

UNITED STATES 1,722,182 PAT'ENT' OFFICE.

JAMES R. TAYLOR, or SPEARMAN,.TEXAS.

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Application filed September 19, 1927. Serial No. 220,568.

of'this adjustment under the controlof the operator of the machine. I Further objects areto provide for themcrease and decrease of propulsion power without changing of motive speed or power, and to provide for the reversal'of the driving force under control of the operator, and to provide for thc'braking action incident-to the opera-' tion of the propeller. v

Still further objects are simplicity of construction, cheapness of manufacture, durability and effectiveness in use, and simplicity of operation.

In the drawings:

Figure l is a rear elevation of the propeller.

Figure 2 is a side. elevation showing. the same attached to the rear of an aeroplane.

l igure 3 is a section on the line 3 3 of Fighre 2 showing the relation of the slldlng block to its housing and to the sliding collar.

Figure 4 is a section on the line 4-4 of Figure 3, looking in the direction of the arrows and showing the relation of the ad justment disks to the sliding block'and to the shafts of the propeller blades.

Figure 5 is a perspective of the two adjust ment disks.

Referring to the drawings in detail, 10 designates the rear end of the body of an aeroplane, from which the propeller shaft 11 projects. The propeller shaft has mounted thereon at its rear end the housing 12'having a chamber 13 formedtherein to receivethe sliding block 14; movable rearwardly andiforwardly relativethereto. with said slidin screws 15 is asllding collar 16 having an an= nular move 17 on the periphery thereof, said collar ei-ng held against longitudinal movement'relative to the machine screws by shoulders 18 and the heads 19 of the machine screws between which the slidin collar is held. The sliding collar is mounted rectangular slideway 20 formed on the shaft lland constituting a part of the housing 12.

21 designates the propeller blades which are secured at their inner ends to shafts 22'. The inner ends 24 and 24 of said shafts are projected into an elongated slot 25- formed in the sliding block and extending parallel with Rigidly connected yoke block by means of machine against torque on a the longitudinal axis of the aeroplane or boat.

The end 24 is cupped to receive therein the other end 24, both of the ends being surrounded by a collar 24", the cupped end 24' forming a hearing for the end '24. Secured upon the shafts 22 and resting'between the sliding hlocksfand the side walls-of the housingare adjustment disks 26 having pins 27 extending froin'the adjacent faces thereof between the center and the periphery of the disks, said pins'being projected into slots 28 formed in the sliding block and extending at right angles to the slot 25.

The rear end of the housing is preferably closed by a cap-29 reinovably secured to the' rear face thereof to provide for access to the moving parts for purposes of repair or inspection. The cap is preferably held in place by means of screws 30 and the housing is preferably formed of two parts 12 and 12 held together by means of screws 31, the bearing chamber '13 being partially formed in both of the sections, whereby it will appearthat the propeller blades with their shafts may be readily removed from the housing without disassembling the blades from their shafts and from the adjustment disks. Collars 40 are formed on the housing continuous with the bearings and apart of each collar being formed on each section 12 and 12*".

Y .The sl-idable collar 16 is operable from the drivers seat by means of a bell crank lever 32 pivoted to the bracket 33 mounted on the rear of the aeroplane body and having a 34 on one arm thereof, said yoke having pins 35 projecting into and riding in the groove" 17 of the sliding block, the other arm '36 of the bell crank lever being connected to the link 37 of a suitable operating lever (not shown) and inthe reach .of' the driver of the machine.

It is believed that the operation of the device will be apparent from the above deseription which, however, is briefly as follows: when it is desired to turn the propeller blades to any given angle,- it is only necessary for-the operator; to move his hand lever to such a position. as will move the sliding block along its slideway, turning the blades 20 through the instrumentality of the sliding collar, sliding block connections and the rotation of the adjustment disks to such position as' will bring the blades \into "a proper angle to the housing. 'By this means the blades may be adjusted to any angle and any draught of air or water may be obtained accomplish the desired result, and the blades may be completely reversed, thus operating as a brake to slow down or stop the machine within a comparatively short distance. The device places the control of the speed and driving power of the propellers under the control of the operator and makes it possible for him to adjust the blades so as to make any degree of variation he may desire. By this arrangement not only may the speed and driving power of the machine be varied, but

as will be found desirable or necessary to a saving in fuel may be accomplished, and

the adjustment n'ia be made without varying the speed or power of the engine. The'above advantages have been accomplished in a simple and economical manner and one which will commend itself to operators in the simplicity oi operation and the durability of the mechanism.

Having described my invention, claim is:

1. A propeller comprising a housing havwhat I ing rotatable blades extending radially there-' .from, said blades being provided with shafts journaled in the walls of said housing, disks on said shafts and rotatably mounted in said housing, a sliding block in said housing havon said disks projecting into said radial slots, said axial slot receiving the adjacent ends of the shafts, and means for sliding said block in said housing for varying the blade angle.

2. A propeller comprising a sectional housing having a chamber therein, a block slidably mounted in said chamber, blades, shafts having one of their ends secured to said blades, disks secured to the opposite ends of said shafts and arranged in said chamber, a cupped inner end for one of said shafts and receiving the inner end of the other shai' t for interfitting relation therewith, said block having an axially arranged slot therein to receive said inner ends, pins extending from the disks and received in radially arranged slots in the block, and manually operated means to r n'ioving the block to vary the angles of the blades.

In testimony whereof I afiix my signature.

JAMES R. TAYLOR.

ing radial slots and an axial slot therein, pins ill)

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