Oscillating spraying apparatus

Claim 2

Oscillating spraying apparatus comprising a frame, a substantially L-shaped supporting casing having a substantially vertically extending portion rotatably mounted on said frame, a bevel gear member located within said supporting casing and having an input shaft concentrically located within said portion and an output shaft at right angles thereto, means for connecting said shaft to drive means for rotation thereof in a given direction, a spraying unit mounted on the supporting casing and including a fan element connected to said output shaft, an oscillating hydraulic motor carried by said frame, means connecting said hydraulic motor to said rotatably mounted supporting casing for oscillation thereof in two directions of which one is the given rotating direction of said input shaft, means to detect the latter direction, and means for controlling said hydraulic motor, said control means including a braking member connected to said detecting means and operated thereby, whereby said spraying unit including said fan and said supporting casing are oscillated at the same speed in both directions.

Claim 3

Oscillating spraying apparatus comprising a frame, a supporting casing mounted on said frame, a bevel gear member located within said supporting casing and having an input shaft, means for connecting said input shaft to a driving unit, a tubular member mounted on said supporting casing, a second casing rotably mounted on said tubular member, a bevel gear unit located within said second casing and having an output shaft and a bevel gear member, a shaft located in said tublar member and coaxially mounted therewith for connecting the output of the bevel gear member to the input of said bevel gear unit, whereby output shaft of said bevel gear unit is rotated by said driving unit while the shaft located in the tubular member rotates in a direction given by that of the driving unit, a hub rigidly connected to said second casing and having the axis thereof aligned with the output shaft of said bevel gear unit, a fan element connected to said latter output shaft, a tubular envelope provided with spray nozzles and supported by said hub to surround said fan element, a hydraulic motor incLuding an oscillating motor carried by said frame, means connecting said tubular member with said hydraulic motor for oscillating said second casing, and means for controlling said hydraulic motor, said control means including braking members operating in the same direction as that of the shaft located in the tubular member.

Claim 4

Oscillating spraying apparatus comprising a frame, a supporting casing mounted on said frame, a bevel gear member located within said supporting casing and having an input shaft, means for connecting said input shaft to a driving unit, a tubular member mounted on said supporting casing, a second casing rotably mounted on said tubular member, a bevel gear unit located within said second casing and having an output shaft and a bevel gear member, a shaft located in said tublar member and coaxially mounted therewith for connecting the output of the bevel gear member to the input of said bevel gear unit, whereby output shaft of said bevel gear unit is rotated by said driving unit while the shaft located in the tubular member rotates in a direction given by that of the driving unit, a hub rigidly connected to said second casing and having the axis thereof aligned with the output shaft of said bevel gear unit, a fan element connected to said latter output shaft, a tubular envelope provided with spray nozzles and supported by said hub to surround said fan element, a hydraulic motor incLuding an oscillating motor carried by said frame, means connecting said tubular member with said hydraulic motor for oscillating said second casing, and means for controlling said hydraulic motor, said control means including braking members operating in the same direction as that of the shaft located in the tubular member.

Claim 5

Apparatus as set forth in claim 1 comprising means for adjusting both the rotation angle and frequency of said hydraulic motor.

Claim 6

Apparatus as set forth in claim 1 comprising means for adjusting the inclination of the spray unit.

Claim 7

Apparatus as set forth in claim 1, wherein said L-shaped supporting casing is mounted on an inclinable support.

Claim 8

Apparatus as set forth in claim 1 wherein the driving unit comprises an engine having an output shaft connected to a bevel gear unit having an output shaft connected to the input shaft of said bevel gear member.

Claim 9

Apparatus as set forth in claim 6, comprising a cardan type coupling connecting the engine output shaft with the bevel gear unit.

Claim 10

Apparatus as set forth in claim 6, wherein the connection of bevel gear unit output shaft with the bevel gear member input shaft is adjustable in height.

Claim 11

Apparatus as set forth in claim 6, comprising a casing enclosing the bevel gear unit and mounted on a pivoting plate.

Claim 12

Apparatus as set forth in claim 9, wherein said casing comprises a pivotal sleeve concentric with the input shaft of the bevel gear member and connecting the casing of the bevel gear unit to a casing containing the bevel gear member.

Claim 13

Apparatus as set forth in claim 10, wherein each casing contains a shaft section connected to one pinion of the bevel gear contained in said casing, each shaft section having a splined end protruding from said casing and an intermediary shaft having ends constituting splined sleeves connecting said shaft sections of each casing, whereby the intermediary shaft is removable at the same time as the pivotal sleeve connecting the two casings.

Claim 14

Apparatus as set forth in claim 11, wherein both the intermediary shaft and the pivotal sleeve are constituted by telescopic elements.

Claim 15

Apparatus as set forth in claim 1, wherein the control means for said hydraulic motor comprises a three position distributor, two of the three positions of said distributor respectively corresponding to operation in both directions of the motor and the third position corresponding to stoppage of the motor whose inner circuit is then closed, whereby said motor forms a lock preventing oscillation of a pivoting section carrying the spraying unit.

Claim 16

Apparatus as set forth in claim 13, wherein a by-pass circuit is placed in a reversing circuit of a supply pump for the hydraulic motor, said by-pass circuit comprising a flow adjusting device whereby the speed of the motor is adjustable to vary the oscillations transmitted to the spraying unit.

Claim 17

Apparatus as set forth in claim 13, comprising a limiting device with unidirectional operation, in the motor circuit to retard in one direction circulation of the fluid circulating in said motor, whereby compensating the couple exerted on said motor by the spraying unit when it is driven in the given direction during operation of the fan element.

Claim 18

Apparatus as set forth in claim 13 wherein the distributor of the motor has an electromagnetic control and comprises a slide normally disposed in neutral position at which the circuit of the motor is closed, said slide being movable between two working positions by two windings having a supply controlled by two micro-switches in a circuit controlled by a main switch and at least one control means supported by the mobile element of a kinematic system connecting the motor to the sections of the pivotally mounted supporting casing.

Claim 19

Apparatus as set forth in claim 16 wherein one of the two micro-switches is normally closed and the other one is normally open, the normally closed micro switch supplying one of the windings of the distributor and the norMally open micro switch supplying the other winding of the distributor through a polarized and self energisable inverter relay interupting supplying of the winding of the distributor which is normally supplied by the normally closed micro-switch when a pulse applied to said normally open micro switch rocks the inverter relay which is again rocked upon a control means causing opening of the normally closed micro switch.

Claim 20

Apparatus according to claim 16, wherein the control means are of a cam type.

Claim 21

Apparatus according to claim 16, wherein the micro-switches as well as the control means are of a magnetic type.

Claim 22

Apparatus according to claim 16, wherein the micro-switches are connected to a logical memory device controlled by said control means and supplying the windings of the distributor in one of two directions and in other one of said two directions.

Claim 23

Apparatus according to claim 16 comprising two micro-switches, a first micro-switch being normally closed and a second micro-switch being normally open, the first micro-contact having a terminal connected to a first reference potential and other terminal connected to one input of an OR gate, the second micro-switch having a terminal connected to a second reference potential and an other terminal connected to said first reference potential as well as to one input of and AND gate of which an other input is connected to output of the OR gate, output of said AND gate being connected to an other input of the OR gate as well as to the windings of the distributor, whereby the normally closed first micro-contact supplies the windings of the distributor in one of two directions and the normally open second micro-switch suplies the windings of the distributor in other one of said two directions shifting of one direction to the other direction being provided from one of the control means acting on one of the micro-switches.

Claim 24

Apparatus according to claim 16 comprising two micro-switches, a first micro-switch being normally open and a second micro-switch being normally closed, the first micro-switch having two terminals thereof connected to inputs of a first NAND gate, output of said first NAND gate being connected to one input of a second NAND gate having an other input connected on one hand to one input of the first NAND gate and on the other hand to a reference potential, the second micro-switch having a terminal connected to output of the second NAND gate and an other terminal connected to the input of the first NAND gate which is not connected to the reference potential, output of the first NAND gate being moreover connected to a first of the windings of the distributor and output of the second NAND gate being connected to a second of the windings of the distributor, whereby the normally open micro-switch moves the distributor in a first direction and the normally closed micro-switch moves the distributor in a second direction shifting of the first direction to the second direction being provided from one of the control means acting on one of the micro-switches.

Claim 25

Apparatus according to claim 13, wherein the output shaft of the hydraulic motor is connected by a chain to a sprocket wheel carried by the pivoting section of the spraying unit, said section also supporting a crown for supporting two cams, said cams being adjustable in position and utilized to operate two micro-switches through which the distributor is brought in both working positions.