US1488341A - Interlocking means for controlling elevator mechanisms - Google Patents

Description

March 25 1924.

w. E. HALE INTERLOCKYLNG MEANS FOR CONTROLLING ELEVATOR MECHANISMS 2 Sheets-Sheet 1 'Filed April '7, 1922 Mm/ CONTROL SWITCH II II I" (/M/T SWITCH March 25,1924; 1,488,341

W. E. HALE "INTERLIOCKING MEANS FOR CONTROLLING ELEVATOR MECHANISMS Filed April 74 1922 2 Sheets-Sheet 2 Patented Mar. 25, 1924.

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@ STATES WILLIAM E. HALE OF FORT WASHINGTON, PENNSYLVANIA, ASSIG-NOR TO B. H. BEAUMONT COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

INTERLOCKING MEANS FOR CONTROLLING ELEVATOR MECHANISMS.

Application filed. April 7,

To all whom it may concern:

Be it known that I. WILLIAM E. HALE, a

citizen of the United States. residing in Fort Washington. Montgomery County, Pennsyla Vania, have invented certain Improvements in Interlocking Means for Controlling Elevator Mechanisms, of which the following is a specification.

My invention relates to certain improve ments in elevating mechanisms, especially of the skip hoist type, in which material is discharged into a bucket which is carried up to a certain elevation and discharged into a hopper of a bin or conveyor fromwlnch it it is distributed.

In certain types of skip hoists, coal and ashes are handled and it is desirable when coal is being handled that it Toe-discharged into the proper bin and likewise the ashes.

One object of the present invention is to construct an interlocking means which will prevent the accidental discharge of ashes into the hoisting bucket when coal is being elevated.

A further object of the invention is to provide means for, automatically shifting a valve so as to direct the'material into the proper bin. I

In the accompanying drawings:

Fig. 1 is a diagrammatic view in elevation and partly in section showing the interlocking mechanism arranged so as to prevent the discharge of an ash car into the hoisting bucket.

Fig. 2 is a view, similar to Fig. 1, showing the interlocking mechanism in posltion to allow the discharge of an ash oar;

Fig. 3 is a sectional view on the line 3-3, Fig. 1;

Fig. 4 is a sectional view on the l ne 44, Fig. 2, Fig; 5 1s a perspective view of the guard; and Fig. 6 is a diagram of the wiring of the to switch mechanism.

\ 1 is apit. 2'is a skip hoist track which extends from the pit to a point above a ho per 3. 4: is a skip hoist bucket of the ordinary type having wheels 5 which-travel,

1922. Serial No. 550,424. D

ing mechanism is used to elevate the bucket from the pit 1 to a point above the hopper 3 where it is discharged as shown 'by dotted lines, Fig. 1, by any of the well' known means.

6 is a bin for coal, or other like material. This bin can be located under railroad tracks so as to receive. material directly from a car, or it can be located close to a piling floor.

7 is a chute having a suitable valve 8 for controlling "the flow of material through the chute. This chute extends over the bucket 4 when in the loading position so asto allow coal to flow from the hopper through the chute into bucket. When the bucket is raised,'then it automatically moves the chute from the position shown in Fig. 1'to that shown in Fig. 2., preventing further flow of material through the chute. When the bucket is raised and discharged, as shown in Figs. 1 and 3, the" contents flow from the hopper through a chute 9 to a bin, or other receptacle, for the coal. A valve 10, which is pivoted at 11 and under the control of mechanism which will be hereinafter described, allows coal to flow into the chute 9 and cuts off the ash chute 12.

13 is an ash car, which is mounted on wheels, as shown, and is adapted to be pushed manually from the boiler room, or other point, tothe edge of the platform 14 above the pit 1, so that the ashes can be discharged from the ash car into the bucket of the skip hoist, as shown in Fig. 2.

15 is avertical shaft adapted to hearings in suitable stands 17 and 18, and havin at its upperend an operating arm 19. ear the lower'end of the shaft 15 is an arm 20 having a rectangular guard 21, which 1 is in the path of the ash car when in'the position illustrated in Fig. 1 so as to prevent the passage of the ash car beyond the guard, making it impossible for a laborer'to. discharge the ash car into the hoisting bucket ,4 when coal is being elevated.

V 22 is an arm on the shaft 15 to which is attached a rope 23 leading around sheaves 24 to the. lower end of the chute operating bar 25. Also attached to the arm 22 is a rope 26 which passes around sheaves 27 and 28 and up to a point near the hopper 3 and around sheaves 29. Between the sheaves 29 the rope 26 is attached at 30 to an .arm 31 of the valve 10. The rope passes down and around a sheave 32 to the arm so that, when the shaft is turned to the position shown in Fig. 1. the valve is turned in order to directmaterial through the chute 9, the guard preventing the ash car from being moved to the discharge point. The

pivoted section of the chute is in position to load the bucket 4 with coal.

When the shaft 15 is turned to the position shown in Fig. 2. then the valve 10 is moved to a position to close the coal chute 9 and open the ash chute 12. The guard is moved out of the path of the ash car, which is free to be moved to the edge "of he platform and its contents discharged into the skip hoist bucket. The pivoted section of the chute is raised on the upward movement of the bucket to cut off the flow of material from the bin (3. The chute remains in the raised position until the operating bar is released to allow it to move into the path of the bucket.

33 is a limit switch operated by a cam 33 on the shaft 15, and, as shown in the diagram, Fig. 6, this switch is in the circuit of the main magnetic control switch 34 which controls the motor 35. 36 is another limit switch which is at the rails of the skip hoist and a lever 37 of the switch is actuated by the bucket. When the skip hoist is used for coal, then the shaft 15 is moved to position to open the limit switch 33. The operation of the switch 36 by the bucket will have no effect upon the main control switch 34, and the skip bucket will move toits full extent so as to receive coal from the pivoted chute. If, however, the shaft 15 is moved so as to open the gangway and allow the ash car to be moved to a position to discharge its load into the skip hoist, then the switch 33 is in the closed position, and when the skip bucket is being lowered it will come in contact with the lever 37 of the switch 36 which will open the switch and prevent the further movement of the bucket. The bucket will then be in position to receive ashes from the ash car and will not operate the coal chute.

lVhile I have illustrated the ash car as a simple hand car, it will be understood that in some instances it may be of the power driven type.

It will be seen that when the skip hoist is used for handling coal, it will be impossible for the contents of the ash car to be discharged into the bucket. When the apparatus is used for handling ashes, it is impossible to load the bucket with coal or to discharge coal into the coal chute.

It will be understood that while the inve-ntion is described as used in connection with coal and ashes, it can be used in hanfrom the hopper; a valve controlling the flow of material to either of said chutes; and means for preventing movement of the hand operated car when material is being loaded into the skip hoist bucket'from the. chute, said means also controlling. the valve so that the material discharged from the car will be directed through one chute and the material discharged from the'loading chute will be directed to the other chute controlled by the valve. a

2. The combination in a skip hoist, of a hoisting bucket; rails on which the bucket travels; an elevated hopper over which the rails extend and into which the contents of the bucket are discharged; chutes leading from the hopper; a valvefor directing the flow of material to either chute; a hopper for coal; a chute leading from the hopper for loading the bucket; a platform; an ash car arranged to travel on the platform; a vertical shaft having a guard. which, when moved into one position, will interfere with the movement of the ash car, and,,when moved into another position, will allow the car to be moved to the edge of the latform to discharge its load; and mechanism connecting the shaft with the chute valve so that, when the bucket is carrying coal, the coal, when discharged, will flow through the coal chute, and, when carrying ashes, the ashes, when discharged, will flow through the ash chute.

3. The combination in a skip hoist, of a bucket; rails on which the bucket is adapted to travel; a chute in front of the rails for loading material into the bucket; a platform at the rear of the rails on which a car can be run and its contents discharged into the bucket; a hopper at the upper end of the skip hoist into which the bucket discharges its load; means for preventing the movement of the car beyond a certain point on the platform when the bucket is ,being loaded with material from the chute; a motor for operating the hoist; a main control switch for the motor; a switch operated by the above means, which prevents the movement of the car beyond a certain oint; and a switch arranged to be actuate by the skip hoist bucket, the mechanism being so arranged that, when the bucket is bein load ed from one oint, material cannot e dis charged into t" e bucket from another point.

4. The combination in a skip hoist, of a track: a bucket arranged to travel on said track: a chute in front of the track arranged to discharge material into the bucket; means for discharging material into the bucket arranged back of the track; a hopper at the 7 upper end of the track into which the bucket discharges its load ;'tWo chutes leading from the hopper; a valve for directing the material into eithen chute; and means for op- 10 from the means at the back of the track Will 15 be directed into the other hopper chute.

WILLIAM E. HALE.

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