US1149728A

US1149728A - Mechanical movement.

Info

Publication number: US1149728A
Application number: US71505112A
Authority: US
Inventors: Esteban Ciarlo
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-08-14
Filing date: 1912-08-14
Publication date: 1915-08-10
Anticipated expiration: 1932-08-10

Description

E. CIARLO.

MECHANICAL MOVEMENT. APPLlcATloN FILED Aue.14. 1912.

Patented Aug. 10, 1915. 1

E. CIARLO. MECHANICAL MOVEMENT. APPLICATION .111:0 AuG.14. 1912.

Patented Aug. 10, 1915.

2 SHEETS-SHEET 2- SMM M, fw

ED STATES PATENT OFFICE.

' ESTEBAN CIARLO, 0F FOUNTAIN HILL, PENNSYLVANIA.

MECHANICAL MOVEMENT.

Specication of Letters Patent.

Patented Angera, 1915.

Application led August 14, 1912. Serial No. 715,051.

To all whom 'it may concern Be it known that I, ESTEBAN CIARLo, a citizen of Argentina, and resident of Fountain. Hill, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improvements in Mechanical Movements, of which the following is a specification.

This invention relates to variable driving mechanisms for use in multiple cylinder pumps. or motors, whereby the stroke of the pistons may be varied to change the output of the pump or the speed of the motor, and 1s particularly applicable to variable speed fluid transmission devices.

In variable speed fluid vices 'a pump is used in connection with a hydraulic motor, the liquid passing directly from the pump cylinders intothe motor cylinders to operate the motor. In order to vary the speed of the motor it is customary in such devices to provide means for varying the stroke of the pump pistons, and in order to reverse the motor it is customary to reverse the action of thepump pistons.

When the invention is used in connection with a variable speed fluid pressure motor,

the motor receives a constant supply of the motive iuid and the piston displacement of the motor is also constant. It will therefore be obvious that the speed of the motor will be inversely proportional'to the stroke of the pistons.

The present invention has for its Object the provision of a mechanism which is simple in construction, is capable of transmitting considerable amounts of power, and which may be accurately and conveniently controlled.

The novel features of the invention will be apparent from the following description taken in connection with the accompanying drawings, in which the invention is shown as embodied in a multiple cylinder pum adapted for use in a variable speed iiui transmission device.

In the drawings: Figure 1 is a longitudinal section through a pump embodying the a frame which carries the pump cylinders 11, these cylinders beingpreferably arranged radially about the center of the driving shaft transmission de- 12. The shaft 12 may have arranged on the pro]ecting end 13 thereof a coupling, pulley or gear for the purposeof driving the same, and is hollow to receive the longitudinally movable wedge member 14. The shaft 12 is provided with an integral flange 15, a removable'flange 16 and a rectangular portion 12a, the removable liange being held in position by means of a shoulder at 12", the end of the rectangular portion 12a, and an eccentric sleeve 17 and suitablenuts 18 and `19, the latter having screwHthreaded engagement with the end of the shaft. The shaft 12 is carried in suitable bearings 20 and 21 and has arranged thereon a thrust collar 22 which is held in position by a suitable sleeve 23 having threaded engagement with the shaft. 0n the opposite sides of the thrust collar 22 are arranged the

thrust bearings

24 and 25, the thrust bearingJ 24 engaging a shoulder 26 on the bearing member 27 carried by the frame 10, and the bearing 25 being secured in position by a cap or bonnet 28 which may be secured to the bearing member 27 by means of screw threads 29, Orin any other suitable manner, and which `carries suitable packing means 28 surrounding the shaft.

Eachof the pump cylinders 11 hascooperating therewith a valve 30 arranged in a cylinder 31 connected with the cylinder 11 by a suitable conduit 32. The eccentric sleeve 17 may be rigidly secured to the shaft 12 and has arranged thereon a bearing sleeve 33` provided with an inturned concentric flange 34 which coperates with a similar flange 35 on the nut 36 to hold the eccentric strap 37 in position, the strap being provided with laterally projecting flanges 38 and 39 which coperate with the above-mentioned flanges 34 and 35. The eccentric strap 37 is provided with the radially extending arms 40.which are connected with the valves 30 by means of' pins or pivots 41.

means of screw threads 49 and being held in position by means of a suitable screw 50 which prevents the collar 48 from turning.

The rectangular portion 12a Yof the shaft l2 has arranged thereon a ring 51 having a rectangular opening, two faces of which may be arranged to engage opposite faces of the rectangular portion of the shaft. In order to provide for wear, these faces of the ring may be provided with cheek or bearing plates 51a which lit between the shaft and the ring and cause the ring to be turned by the shaft. The other-two facesl of the rectangular opening in the ring 51 are spaced apart asuflicient distance to permit the ring to 'be moved transversely of the shaft l2. Roller bearings 52 are arranged between the rings 51 and 46.

The wedge member 14 is provided with an oblique or wedge portion 53 and secured to this oblique or Wedge portion 53 are the laterally projecting keys 54 which engage suitable slots or keyways 55 on-the interior of the shaft 12. Wedge blocks 56 and 57 are arranged between the ring 51 and the oblique portion 53 of the wedge member and have their inner faces inclined to correspond with the wedge member, whereby the' Wedge blocks and the ring 51 may be shifted transversely of the shaft 12 by a longitudinal movement of the Wedge member 14. The wedge member 14 is also provided with the cylindrical end portions 58 and 59, the former of which `is arranged in a suitable cylindrical bore 60.in the shaft 12. The extension 59 of the wedge member projects beyond the end of the shaft 12 and is connected lwith suitable mechanism for moving the wedge member endwise.

The mechanism for moving the wedge member 14 preferably consists of an internally threaded sleeve or cam member 61 which engages an externally threaded or coperating cam member 62, the latter being connected with the extension 59 of the Wedge member by means of two ball thrust bearings 63 and 64. The end of the extension 59is preferably reduced in diameter as at 65, and beyond the portion 65 is a portion 66 of still smaller diameter forming a shoulder against which is clamped a thrustl ring 67 by means of a nut 68, the latter being preferably secured in position by means of a pin 69. The member 62 has an internal recess in whichv are arranged the thrust bearings 63 and 64, these bearings being held in position by the flange 70 and the threaded hub 71 on the rod 72, this rodbeing slidably arranged in a suitable bearin 73 supported by the frame 10.

gfhe construction just described, as will be readily understood, permits the wedge member 14 to rotate relative to the rod 72 and the member 62. The sleeve 61 has secured thereto in any suitable manner the vto the frame 10 in any suitable manner and has arranged on the opposite sides thereof the ball thrust bearings 81 and 82, the bearing 81 being preferably in engagement with the back of the -bevel gear 74 and both bearings being held in position by means of suitable nuts 83, which are threaded on the exterior of the sleeve 61. As will be readily seen from Fig. 1, the thrust bearings 81 and 82 and the member 62 support the sleeve 61 and hold the same against movement longitudinally of the shaft 12.

' The operation of the mechanism is as fol- Vlows: As shown in Fig. 1. the wedge blocks -56 and 57 and the ring 51 are in their central or neutral position so that the ring 46 is concentric with the shaft 12, and therefore when the shaft 12 is rotated the pistons 42 will remain stationary. By shifting the wedge 4member 14 in either direction from the position shown, it will be seen thatthe wedge blocks 56 and 57 and the rings 46 and 51 and the connecting rods 44 will be shifted laterally of the shaft and thereby cause the ring 46 to be arranged eccentric to the shaft 12 so that when `theshaft is rotated the pistons 42 will be reciprocated in their cylinders 11. It will also be seen that by shifting the wedge member 14 to the right from the positiqn shown in Fig. 1, the ring 46 will be moved downwardly, and by shifting the wedge member 14 toward the left the ring will be moved upwardly so that the direction of movement of the pistons 42 will be reversed in moving the wedge member from one side of the neutral position to the other. Since the eccentric 17, which actuates the valves 30, is lixedto the shaft 12, it will be understood that when the direction of movement of the pistons 42 is reversed the valves 30 will always coperate to reverse the direction of flow of the Water or other fluid which is pumped.

The shaft 12 will ordinarily be driven at a constant speed from any suitable source of power and it is therefore desirable to be able to shift the Wedge member 14 without stopping the shaft 12. This may be accomplished by the mechanism which I have disclosed and, as will be readily understood, the member 62 and the wedgel member 14, which is connected therewith, will be moved longitudinally of the sleeve 61 when the sleeve is rotated. The rotation of the sleeve 61 is effected by means of the hand wheel 79, and the member 62 may be moved in either direction by means of this hand Wheel.

It will be observed that all of the Working parts are thoroughly inclosed and are lso so arranged that in case of necessity they may be readily taken apart. By the provision of ball bearings throughout the mechanism very little e'ort is required on the part of the operator to adjust the mecha` nism, and the wear on the moving parts is reduced to a It will be obvious'to'those skilled in the art that vario's changes may be made in the minor details of the invention within the scope of the. appended claims and therefore I do not wish to be limited to the precise details of construction shown and described.

Having thus described the invention, what` is claimed is:

1. In apparatus of the class described, the

combination of a hollow shaft, having a shoulder, ak iange spaced therefrom and a through transverse slot between 'said shoul` der and flange, a removable flange arranged in abutting relation to said shoulder, a transverse? shiftable eccentric arranged between said anges and rotatable with said shaft, an axially movable wedge member arranged in said shaft, and means operatively connecting said wedge member with said eccentric.

2. In apparatus of the class described, the combination of a hollow shaft, havin a shoulder, a flange spaced therefrom an a through transverse slot between said shouly der and ange, anv axially removable fiange 1 ranged between sai arranged in abutting relation to said shoulder, a nut on said shaft coperating with said shoulder to secure said removable flange,- a transversel shiftable eccentric ard lianges and rotatable with said shaft, anaxially movable wedge member arranged in said shaft, and means operatively connecting with said eccentric,

3. In apparatus of the class described, the

said wedge `member combination of a hollow shaft having a rectangular portion anda through transverse slot in said rectangular portion, the shaft also having'one or more axially extending internal key-ways, a transversely shiftable eccentric arran ed on said rectangular portion of the shaigt, an axially movable wedge member in said shaft having one or morev keys fitting said keyways, and means operatively connecting said eccentric and wedge member.

14. In apparatus of the class described, the

combination of a hollow shaft, having a flange and a through transverse slot adjacent said iiange, a transversely shiftable onepiece eccentric ring alongside of said ange and arranged to rotate with said shaft, a-

removable flange coperating with the rst so mentioned flange to hold said eccentric against am'al displacement, means for securing said removable flange, and means@ within said shaft for shifting said eccentric.v

5. In apparatus of the class described, the

combination of a hollow shaft, having a ange and a through transverse slot adjacent said flange, a transversely shiftable one piece eccentric alongside of said flange and arranged to rotate with said shaft, an ax- `Il? ially removable ange coperatmg with the first vmentioned flange to hold said eccentric Iagainst axial displacement, a second one-v piece eccentric on said shaft, a nut threaded on the shaft and securing said second eccentric and removable flange in position, and

.means in said shaft for shifting the firstmentioned eccentric.

In testimony/whereof I aix my signature .in presence of two' witnesses.

ESTEBAN OIARLO. Witnesses: i

E. GRANT T161-, C. L. WRIGHT.