US1742180A - Hoisting mechanism - Google Patents

Description

Patented Dec. 3'1, 1929 UNITED STATES PATENT OFFICE CHARLES :F.VOSGOOD, 0F CLARENIYQNT, NEW HAMPSHIRE, ASSIG-NOR TO SULLIVAN IIA CHINEBY COMPANY, A CORPORATION -OF MASSACHUSETTS HOISTING MECHANISIII.

Application mea my 1, 1924. sum1 11o. 710,324.

.This invention relates to hoisting mechanisms.

It has'for its object to provide an improved hoisting mechanism. Afurther object is to provide improved control means therefor.

- Another .object is to provide an improved doubledrum hoist with improved means for alternatively connectin the drums to a driving motor. Another o ject is to provide in 'combination with a drum and driving motor therefor, improved means for connecting the drum in driving relation to the driving motor,

which means constitutes manually operable means adapted to simultaneously control both 15 elements.

In the accompanying drawings I have yshown for purposes of illustration three forms which my invention may assume. in practice.

Fig. 1 is a side elevation partly broken away to show details of construction.

Fig. 2 is an end elevation partly broken away to show details of construction.

Fig. 3 is a sectional view. of the control valve. L

Fig. 4 is a modified form of control valve.

Fig. 5 is an end elevation of a modified form of hoisting mechanism.

In the illustrative embodiments of my invention, I have shown the same applied to a double drum hoist, although it will be obvious that the same is applicable to a single drum hoist also. More s1 ,cifically, the same-comprises a base 1 having standards 2 'and 3 projecting upwardly from the opposite ends thereof, and a central stationary motor 4 disposed between the drums 5 and 6 which are rotatably supported by the motor casing and standards. This form of hoisting mechanism is well known, and further details, briey described, comprises a frictionally controlled internal gear 7 adapted to be held or allowed to freely rotate in a bearing 8 mounted within the standard 3. Inasmuch as the structure for each drum is identical, description of one end will suffice for "both, The dear 7 is held by a friction band 9 controlled y a suitable mechanism hereinafter dew scribed, and when the same is so held, power will flow from the motor throu h suitable reduction gearing 10 to drive the rum. The gearing 10 is carried by a head 11 formed on the outer end of the drum, this head having a stub shaft 12 also rotatably mounted within the hub of gear 7. y,

l Improved automatic means are herein' provided for controlling the operationof the friction bands so that the same is dependent upon the operation of the motor. This means comprises a cylinder 13 disposed within the frame 1 and transversely of the drum axis. A piston 14 reciprocably mounted therein has a piston rod 15 connected as by a pin and slot connection to a bell crank 16 pivotally mounted on an arm 17 carried at the forward side of the frame 1. The ends of the friction band -9 are connected tothe bell crank-as at 18 and 1 9 and so arranged that when the piston 14 is forced outwardly, the friction band9 will hold the internal gear 7, thereby acting asa cluteh mechanism for controlling rotation of the drum. A cylinder is provided for each of the internal gears 7,l but it will of course be understood that if desired, one cylinder and piston could be used for controlling the same inasmuch as they are alternatively operated.

In the preferred formV of my invention, I have shown an air type motor, the actuatingl fluid foi1 which is controlled by a valve 20 having an inlet 22 and outlet 21, the latter provided with suitable piping to deliver such actuating Huid to the motor. Communication between the pipes 21 and 22 is hadL by way of a peripheral passage 23 formed in the valve part 24 rotatably mounted within a bore 25. In vthep'osition of the valve shown in Fig. 3, the passage 23 will also alld'w How of Huid through a pipe 26, while a second pipe 27 diametrically opposed thereto is vented to the atmosphere by a passage 28. In order to obtain the dependent operation between the motor and theY respective drums, the pipes 26 Vand 27 will be connected to the cylinders k13 for controlling-the friction bands of the respective drums. j

In the operation, it will be seen that when pipe 26 to actuate the piston 14 for the right and friction band to hold the corresponding internal gear stationary and cause rotation of the drum 5. At the same time the cylinder for the left hand drum will be vented to the atmosphere as by the vent passage 28, thus allowing the left hand internal gear to be freely rotated; and consequently the drum 6 will not be driven. By turning the valve part 24 180, it will be seen that the pipe 27 will be placed in communication with the inlet pipe 22 and thereb pressure fluid to the left and cylinder 13, to cause operation of drum 6 while drum 5 is now free.

In Fig. 4 I have shown a modified form of the control valve comprising a casing 29 with a usual rotatable central member 30 having a central live pressure fluid inlet passage 31 adapted to communicate with the passage 21 leading to the motor as by a peripheral groove 32. When the member 30 is in the position shownin Fig. 4, the passage 26 leading to the cylinder for actuating the right hand friction control band will be in communication with the source of live pressure fluid through the passage 31, while the passage 27 leading to the cylinder for the left hand drum will be vented to the atmosphere as by a passage 33 and a peripheral groove 34. When the valve is turned 90 degrees from its present position, live fluid will continuously flow to the motor but the passage 26 will bel brought into communication with the passage 33 as by the groove 34 thus releasing the right hand drum and allowing fiow of live pressure fluid from the passage 31 to the cylinder for the left hand drum as through the peripheral groove 32 and passa e 27.

In the mo ified form shown in Fig. 5, the motive power comprises an electric motor and a suitable switch is used whereby when thrown in one direction, current will flow to energize a solenoid 35 corresponding to one of the cylinders 13. A usual plunger 36 cooperates with the solenoid to actuate the friction bands as in .the first ease. When the switch is thrown in the opposite direction,-a second-solenoid which is provided for the other friction band will of course be actuated.

While I have in this application specifically described three forms which my invention may assume in practice, it will be understood that these forms of the same are shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. A haulage mechanism comprising a motor, a plurality of winding drums rotatable independently of said motor, driving conallow the fiow of nections between the motor and said drums operative to effect rotation in the same direction of each drum without reversal of the motor, said driving connections comprising power transmission connections with the motor individual to each drum and each comprising means for selectively rendering it effective or interrupting power transmission thereby to its respective drum, controlling mechanism individual to each of said last mentioned means operative on supply of actuating medium thereto to actuate its controlled means to effect drum drive, and means for controlling said motor and said controlling mechanisms operative to supply actuating medium to the motor, and to one or another of said controlling mechanisms separately only when actuating medium is flowing to the motor, and having a single controlling member movable to different positions to effect control of said different controlling mechanisms.

2. In a haulage mechanism, a motor operative on supply of motive medium thereto, a plurality of rotatable Winding drums, means associated with each drum for transmitting power from said motor thereto separately to cause driving thereof, said means each including power transmission controlling devices controllable either to effect transmission of rotation from the motor to its respective drum or to release the drum from driving connection with the motor thereby to permit free rotation thereof, operating mechanisms for said power transmission controlling devices operable by the same kind of motive medium as said motor, and controlling means for said motor and for said operating mechanisms including an operator controlled element movable to different positions to effect the rotation of different drums and controlling means governed by said operating element and in each of said positions of the latter effecting motive medium supply to the motor and to one power transmission controlling device operating mechanism.

3. ln a haulage mechanism, a motor operative on supply of motive medium thereto, a plurality of rotatable winding drums, means associated with each drum for transmitting power from said motor thereto separately to cause driving thereof, said means each including power transmission controlling devices controllable either to effect transmission of rotation from the motor to its respective drum or to release the drum from driving connection with the motor, thereby to'permit free rotation thereof, operating mechanisms for said power transmission controlling devices operable by the same kind of motive niedium as said motor, and a common controlling mechanism for said motor and for said operating mechanisms including a control element movable to different positions in each of which it effects motive medium supply to th(l Isupply to another power transmissionicon.-

trolling device operating mechanism.

4. In a haulage mechanism, a motor operative on supply .of motive medium thereto, a plurality of rotatable-winding drums, means associated with each drum for transmitting power from said motor thereto separately to cause driving thereof, said means each including power transmission controllin devices controllable either to eiect transmission of rotation from the motor to its res ctive drum or to release the drum from iving connection with'the motor, thereby to permit free rotation thereof, operating mechanisms for said power transmission controlling devlces operable by thesame kind of motive -inedium as said motor, and a common controlling mechanism for said motor and for said o erating'mechanisms including a inem- 1 ber a apted to be placed in and between different positions in one of which it effects motive medium supply to one of said power transmission controlling.V device operatin f mechanisms and in the other of which it e fects motive medium supply to thel other of said power transmission controlling tor, a plurality of independently t winding drums, means provide device operating mechanisms, andin both of which, and also in intermediate positions, it eiects supply of motive medium to said motor.

5. A haulage mechanism comprising a morotatable for each drum adapted to constitute driving connections between the respective drum and the motor, said means each including a frictionally controlled reaction member, means for controllin ow of ener medium to said motor, an means` contro ed by said motor control meansfor Iselectively actuating said friction controls for said reaction members to elfect driving of one or another of said drums said motor and said actuatin means for sai friction controls being supphed from a common source with actuating medium, said a'ctuating means for said friction controls being connected to be energized only when ener medium is owing tothe motor.

(tgl haula e mechanism comprising a motor, a plura 'ty of `inde ndently rotatable winding drums, `means or electing drive of each drum without motor reversal including means individual to each drum adapted to constitute driving connections between the respective drum and the motor during rotation of the latter in the same direction, driving connections control means for bringing one of said driving connections into operation at a time when supplied-with power medium, and common control means for the supplies of actuating medium to the motor and to said connections control means, said common control means controlling'ithe supply of actuating medium to said 7. -In a hoist, a fluid actuated motor, a airl of relatively rotatable winding drums, riving connections between said motor and each of said drums, fluid actuated drive control means for each of said driving connections, l

and a common valve for controlling Huid llow to said motor and selectively to each of said' drive control means.

8. In a hoist, a fluid actuated motor, a pair of relatively rotatable winding drums, drivingv connections between said motor and each of said drums, iuid actuated drive control means for each of said driving connections, and a common valve for controlling fluid How to said motor and selectively to each of said drive controlmeans, said valve havin provision for connecting the source of ui with but one drive control means at a time.

9. In a hoist,.a unidirectional motor, a pair of relatively rotatable winding drums, driving connections between said motor and said dru`ms permittin the latter, control g means for said motor, and control means for said driving connections for permitting selective drive of either drum alone directl controlled by said motor control means, sai motor controlling means having one operative osition in which but one of said drums may said drums ma be driven.

`10. In a hoist, a fluid pressure operated" medium from a common source with sai motor, and a single manually operable member for controlling the supply of actuating 'medium to said motor and tosaid expansiblechambers, said manually operable member being movable to direct actuating medium to either of said expansible chamber selectivel 11. In a hoist, a motor, a pair of relative y rotatable winding drums, driving connections Vbetween said motor and said drums permittin independent driving of the latter, contro means for said motor includin a movab e member, and controlling means or slid driving connections for rmittin selective drive of either drum one, sai latter controlli means being directly connected to said mova le member so as to be directly controllnd thereby.

independent driving of driven and another operative position in which only the other of v 12. In a hoist, a motor, a pair of relatively rotatable winding drums, driving connections between said motor and said drums forselectively connecting the latter independently of each other for driving by said motor, controllin means for the motor, and means contro ed by the motor controlling means and actuated independently of the motion of the motor for controlling said drivin connec tions to effect selectively indepen ent drive olf]L one drum or of the other in accordance with t e trollmg means.

In testimony whereof I affix my si ature.

CHARLES F. OSG OD.

articular operation'of said motor con--

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