US2626504A - Hydraulic mechanism for imparting a rotary motion to a member - Google Patents

Description

Jan. 27, 11953 J. FRISONE HYDRAULIC MECHANISM FOR IMPARTING A ROTARY MOTION TO A MEMBER 4 Sheets-Sheet 1 Filed Jan. 10, 1947 Qw 3 MN Arm INVENTOR. Jaw? 719 0/76 ATI'D RN EYE J. F RISONE HYDRAULIC MECHANISM FOR IMPARTING Jan. 27, 1953 2,626,504

A ROTARY MOTION TO A MEMBER 4 Sheets-Sheet 2 Filed Jan. 10, 1947 Y mm Q m O AV Q: NMQ ini \W I N VEN TOR.

Jafin 219 0 77 e ATTE] RN EYB Jan. 27, 1953 J. FRISONE HYDRAULIC MECHANISM FOR IMPAR'I'ING A ROTARY MOTION TO A MEMBER 4 Sheets-Sheet 3 Filed Jan. 10, 1947 INVENTOR.

;Z'S077e A'ITD RN EYS Jan. 27, 1953 J. FRISONE 2,626,504

HYDRAULIC MECHANISM FOR IMPARTING A ROTARY MOTION TO A MEMBER Filed Jan; 10, 1947 4 Sheets-Sheet 4 INVENTOR. J06 5760/76 m M; 5m&

ATTORNEYS Patented Jan. 27, 1953 UNITED STATES PATENT OFFICE HYDRAULIC MECHANISM FOR IMPARTING A ROTARY MOTION TO A .lohn Frisone, Lynn, Mass.

Application January 10, 1947, Serial No. 721,205

3 Claims. (Cl. 60-53) IThis invention relates to a hydraulic hoist, and the principal object of the invention is to provide a hoist that, operated by a step by step motion, will efliciently hoist an article in the same manner as a hoist using a rotary motion.

Another object of the invention is to provide a device composed of a small number of working parts that is durable in use, inexpensive to manufacture, and will accomplish the purpose for which it has been designed.

With the above and other objects in view, the invention consists of the novel details of con struction, arrangement and combination of parts more fully hereinafter described, claimed and illustrated in the accompanying drawings in which:

Figure 1 is a top plan view of an embodiment of the invention;

Figure 2 is a sectional View on F gure 1;

Figure 3 is a sectional view on the line 3-3 of ure Figure 4 is an end view of the device;

Figure 5 is a sectional view on the line 5-5 of Figure 1;

Figure 6 is a sectional view on the line ii-6 of Figure 1;

Figure '7 is a sectional view on the line I-'| of; Figure 1 and Figure 8 is a perspective view of a control valve.

Referring more in detail to the drawing, the reference numeral I0 designates the horizontallydisposed base for mounting the component parts of the hoist which include the winch I2, hydraulically operated cylinders I4 and I6 respectively, and the bearing supports I8 for the drive shaft 28, all of which are secured to the base by bolts 22.

The winch I2 comprises the bearing supports 24 for mounting the axle 26 of the drum 28, and cranks 30 are secured to each end of the axle while a ratchet 32 is mounted on the drum for engagement with the pawl 34 pivotally mounted on one of the supports 24 and tensioned by a coil spring 36 secured at its free end at 38 to the base Ill. The pawl is provided with a treadle 40 for the operation thereof, v

Pivotally mounted at 42 on the base IQ is the brake lever 44 for operating the brake band 46 by means of the rod 48 and the band engages a brake drum 50 on the winch drumv 28 for the braking thereof.

Connected to the cranks by pins 52 are the links E l which are pivoted at their opposite ends in the forked coupling 56 on the ends of the piston rods 58 of the pistons 59.

Each of the cylinders I4 and I6 are similarly constructed, having the triangular shaped supports 69 for mounting the cylinder housings 62 of the cylinders I4 and I6. The housings have removable heads 64 at one end thereof, secured to the annular flanges 66- on the housings bybolts 68, and, the heads 64 are. provided with the line 2--2 of 2 stufiing boxes 79 medially thereoffor reception of the rods 58.

The housings 62 are provided with longitudinally extending spaced parallel tubular passageways 12, and 72' respectively, and said passageways are in communication with each other by means of a conduit M- in which is provided at the center thereof, a T-coupling 16 which is connected by a conduit 78 to the reservoir 80, which is provided with a removable cover 82 for the filling thereof with liquid, a check valve 84 to control the upward flow of the fluid into the reservoir being provided in the conduit '18.

The housings, at their opposite ends, are provided with piston or plunger housings or casings 86, and these housings communicate with the passageways l2, 12' by means of L-shaped passageways or conduits 83. The passageways are in communication with each other by means of the conduit 96 which is provided, at the center thereof, with a T-coupling 92 which is connected by a conduit 9 to the reservoir 83, and a check valve 95 for the downward flow of the fluid from the reservoir 89 is provided in the conduit 94.

Mounted for reciprocation in the housings 86 are the pistons or plunger-s 96 having a forked end 98 for mounting the axles I00 of the rollers I02, and these rollers engage the cams IM on the drive shaft 20, inwardly of the bearing supports It.

The forked end 98 of each plunger 96 is pro vided with the depending guide arm I06 having the coil springs I68 connected to the lower ends thereof, and the other end of the springs connected to the supports It, to urge the rollers I92 into engagement with the cams I04.

The drive shaft 29 is provided with the pulley wheel IIB for a belt connection to a source of power not shown.

The passageways l2 and 12" at their ends, are provided with valve housings H2 in which are mounted the rotary control valves H4, and each valve is provided with diametrically opposed semi-circular ports Hi; and a stem H8. Each stem is provided with a crank arm I28 which is interconnected by meansof a link I22 which is provided at its center with a pin I25. A crank 126 is mounted loosely on the shaft I28 whichis fixed in the boss 53d on each housing 62, and an elongated slot I32 is provided in the free end of the crank I26 to receive the pin I24 mounted on the shaft I28. Above the crank 12% is the sector or quadrant plate I34, which is provided with depending arms I36 at each outer end thereof, and the arms are of a length to engage the link use, which is mounted on the shaft I28 below the crank 52%. Each link I38 is pivoted at I48 to the rod H52, which is pivoted at M4 to the upstanding arm I45 which is provided on the upper side of each forked end 5% of each rod SSQ A rod I58 mounted in the support 53, on each boss E39 carries one endof a coil spring I52 which is cont d t he. o r d att pin I54 t rme a th e t rc the. urve of, the Pl te I34 As the links 54 are urged forward, the arms I46 carry the rods forward alternately due to the step by step action. As the rods move forward, the links I38 are likewise moved forward until they engage the arm I36. In its course of travel, arm I36 will move the quadrant I34 until the opposite arm I36 engages the crank I26 to move the crank forward until the action of the spring I50 will complete the movement of the crank in its full turn. The movement of the crank I26 will move the valve II 4 associated therewith, thereby obtaining the following result.

With the valves II4 positioned, as shown in Figure 3, fluid will flow from the passage 88 in the housing of cylinder I4, through passageway I2, through port H6 in the upper left hand valve II4, as viewed in Figure 3, and then through port I64 to move the piston 59 in cylinder I4 to the right, as viewed in Figure 3, port I 56 to the lower tubular passageway I2 being closed by the said valve H4, and the fluid in the rear of the piston will flow out of port I58 into said lower passageway 12', since port I63 which connects with the upper passageway I2 is closed by the upper right hand valve I I4, as viewed in Figure 3. This will continue until the previous operation of linkage described has operated, when the flow of fluid will be reversed by action of the rotation of the valves I I4, so that fluid will enter through port I63 and flow outwardly through port I56.

In the housing of cylinder I6, fluid is entering th port I63 to the rear of the piston 59 in cylinder I6, and fluid is being driven out of the housing through port I62, port I I6 in the lower left hand valve II4, as viewed in Figure 3, into the lower passageway I2, this flow being reversed as previously described at each stroke of the piston 59.

In use, excess or surplus oil from the housing alternately flows through ports I63 and I64 respectively in each housing to the passageways I2, 72' and then into the conduit I4, thence into the reservoir 80, to be returned through conduit 09 when further fluid is required for the operation previously described.

Thus while one piston is moving forward, the other is moving backward, so that at no time will a. dead center be reached by the moving pistons 59. Thus a step by step motion is obtained, which is similar in all respects to a rotary motion for the rotation of the drum 28.

In operation of the hoist, the cylinders I4 and I6 are filled with sufficient fluid to position the pistons 59 in neutral position. In this position, the housings 62 are full. As the shaft is rotated, the cams I04 will drive the plungers 96 forward, injecting into the cylinders the uncompressible fluid, thereby forcin the pistons 59 forward to provide a step by step motion on the links 54 and subsequent rotation of the shaft 26 of the drum 58.

The pawl and ratchet arrangement described prevents rearward motion of the drum during the hoisting operation, and the brake controls the unwinding of the drum during the lowering motion of the hoist.

In use, power is applied to the pulley wheel IIO to thereby rotate the shaft 20 which has mounted thereon a pair of cams I04. These cams I04 impart a pumping action to the apparatus by means of the rollers I02 and the rods 96, so that fluid will be pumped into the cylinders from the reservoir 80 through the ports H6. The fluid in the exhaust sides of the cylinders l4 and I6 is forced through valve passages I58 and I62 back into the reservoir through pipe I4 and valve 84.

The operation is reversed by the rotary valves which are turned to their opposite positions by means of the mechanism which includes the quadrant plate I34, rod I42, spring I52, arm I20 and link I22.

The actuating means for imparting rotary motion to the winch I2 includes the base I 0 upon which is mounted the bearing supports I8, there being a drive shaft 20 rotatably supported by the bearings I8 which is adapted to be connected to a source of power. Cams I04 are connected to the shaft 20, and arranged above the base I 0 and secured thereto are a pair of cylinders I4 and I6. A piston 59 is mounted for reciprocatory motion in each of the cylinders I4 and I6, and a piston rod 58 is secured to each of the cylinders.

A pair of superimposed tubular passageways 12 and 72' extend longitudinally along each of the cylinders and the ends of these passageways communicate with the interior of each of the cylinders. A valve means is provided for selectively causing opening and closing of the passageways, and plungers 96 are reciprocably mounted in casings 88, the casings communicating with the passageways. A roller I 02 is mounted on each of the plungers 96 for coacting with the cams I04.

Arranged above the cylinders and supported on the base I0 is a reservoir which is adapted to hold a quantity of hydraulic fluid therein and conduits I8 and 94 serve to connect the reservoir 80 to the passageways. In use, fluid passes from the tank 80 down through the conduit 94, then through the conduit into the casings 86, during left to right movement of the plungers 96, Figure 3. When the plungers 96 move in the opposite direction, that is from right to left in Figure 3, then the hydraulic fluid is forced into the uppermost passageway I2 of the previously mentioned tubular passageways. During this movement of the plunger 96 from right to left in Figure 3, the rotary valves are set or positioned so that the rotary valve H4 adjacent the gland end of the cylinder is open to permit flow of hydraulic fluid from the uppermost passageway 12 through the upper cut-out H6 in the valve, then through the port I64 into the cylinder I4 to thereby cause the piston 59 to be moved away from the gland end of the cylinder I4. At the same time, hydraulic fluid is being discharged from the opposite end of the cylinder I4 through port I58, through the lowermost cut-out I I6 in the rotary valve I I4 and into the lower of the pair of passageways 12. This discharging hydraulic fluid then passes to the conduit I4 and through the conduit I8 back to the reservoir 80. As the pistons 59 continue to reciprocate, a linkage mechanism causes the valves I I4 to rotate so that when the piston 59 is moving toward the gland end of the cylinder, hydraulic fluid enters the cylinder through port I63 and is discharged through port I56. It is to b understood that the other cylinder I6 operates in the same manner as the cylinder I4, and the piston 59 in the cylinder I4 operates degrees out of phase with respect to the piston 59 in the other cylinder I6.

There has thus been provided, a hoist which by a step by step motion, will hoist a load, and it is believed that from the foregoing description, the operation and construction of the invention will be apparent to those skilled in the art.

It is also to be understood that changes in the minor details of construction may be resorted to, provided they fall within the spirit of the invention and the scope of the appended claims.

Having thus described the invention, what is claimed as new and desired to be secured by Let ters Patent is:

1. In an actuating means for imparting rotary motion to an axle, a horizontally-disposed base, a plurality of bearing supports supported on said base, a rotatable drive shaft carried by said bearing supports for connection to a source of power, cam means carried by said drive shaft, a pair of spaced cylindrical housings arranged in spaced relation above said base and supported on the latter, a piston mounted for reciprocatory movement in each of said housings, a piston rod having one end secured to each of said pistons and its other end operatively connected to said axle for rotating the latter upon reciprocation of said pistons, there being a pair of superimposed tubular passageways extending longitudinally in each of said housings, the ends of each of said passageways communicating with the interior of each of said housings, valve means coacting with the ends of said passageways and operatively connected to said piston rods for selectively causing opening and closing of said passageways with respect to the interior of each of said housings, a plunger casing carried by each of said cylindrical housings, a conduit connecting certain of each of said passageways to the complemental plunger casing, a plunger mounted for reciprocatory movement in each of said casings, means carried by each of said plungers and coacting with said cam means for causing reciprocatory movement or said plunger in response to rotary movement of said drive shaft, a reservoir spaced above said housings and supported on said base for containing a hydraulic iiuid, conduit means operatively connecting said reservoir to said passageways and casing for conveying said hydraulic fluid to the latter, and a check valve interposed in said conduit means for controlling the now of fluid therethrougn, whereby rotary movement of said drive shait causes reciprocation of said.- piungers to selectively force hydraulic fluid into said housings to thereby reciprocate said pistons and rotate said axle.

2. In an actuating means for imparting rotary motion to an axle, a horizontally-disposed base, a plurality of bearing supports supported on said base, a rotatable drive shaft carried by said bearing supports for connection to a source of power, cam means carried by said drive shaft, a pair of spaced cylindrical housings arranged in spaced relation above said base and supported on the latter, a piston mounted for reciprocatory movement in each or said housings, a piston rod having one end secured to each of said pistons and its other end operatively connected to said axle for rotating the latter upon reciprocation or said pistons, there being a pair of superimposed tubular passageways extending longitudinally in each of said housings, the ends of each of said passageways communicating with the interior or each of said housings, valve means coacting with the ends of said passageways and operatively connected to said piston rods for selectively causing opening and closing oi said passageways with respect to the interior of each of said housings, a plunger casing carried by each or said cylindrical housings, a conduit connecting certain of each of said passageways to the coinplemental plunger casing, a plunger mounted I01 reciprocatory movement in each of said casings, a roller mounted on each end of said plunger and coacting with said cam means for causing reciprocatory movement of said plungers in response to rotary movement of said drive shaft, resilient means operatively connected to said bearing support and to each of said plungers for biasing the latter into engagement with said cam means, a reservoir spaced above said housings and supported on said base for containing a hydraulic fluid, and conduit means operatively connecting said reservoir to said passageways and casing for conveying said hydraulic fluid to the latter, whereby rotary movement of said drive shaft causes reciprocation of said plungers to selectively force hydraulic fluid into said housings to thereby reciprocate said pistons and rotate said axle.

3. In an acutating means for imparting rotary motion to an axle, a horizontally-disposed base, a plurality of bearing supports supported on said base, a rotatable drive shaft carried by said bearing supports for connection to a source of power, cam means carried by said drive shaft, a pair of spaced cylindrical housings arranged in spaced relation above said base and supported on the latter, a piston mounted for reciprocating movement in each of said housings, a piston rod having one end secured to each of said pistons and its other end operatively connected to said axle for rotating the latter upon reciprocation of said pistons, there being a pair of superimposed tubular passageways extending longitudinally in each of said housings, the ends of each of said passageways communicating with the interior of each of said housings, valve means coacting with the ends of said passageways and operatively connected to said piston rods for selectively causing opening and closing of said passageways with respect to the interior of each of said housings, a plunger casing carried by each of said cylindrical housings, a conduit connecting certain of each of said passageways to the complemental plunger casing, a plunger mounted for reciprocatory movement in each of said casings, a roller mounted on each end of said plungers and coacting With said cam means for causing reciprocatory movement of said plungers in response to rotary movement of said drive shaft, resilient means embodying a coil spring operatively connected to said bearing support and to each of said plunger for biasing the latter into engagement with said cam means, a reservoir spaced above said housings and supported on said base for containing a hydraulic nuid, conduit means operatively connecting said reservoir to said passageways and casing for conveying said hydraulic fluid to the latter and a check valve interposed in said conduit means for controlling the flow of fluid therethrough whereby rotary movement of said drive shaft causes reciprocation of said plungers to selectively force hydraulic fluid into said housings to thereby reciprocate said pistons and rotate said axle.

JOHN FRISONE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 259,458 Baird June 13, 1882 388,755 Bonicard Aug. 28, 1888 504,942 Reynolds Sept. 12, 1893 603,173 Clay Apr. 26, 1898 1,011,664 Sundh Dec. 12, 1911 1,455,443 Mayer May 15, 1923 1,787,737 Spies Jan. 6, 1931

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