US1163678A

US1163678A - Duplex weigher.

Info

Publication number: US1163678A
Application number: US81710914A
Authority: US
Inventors: Edwin H Messiter
Original assignee: ELECTRIC WEIGHING Co
Current assignee: ELECTRIC WEIGHING Co
Priority date: 1914-02-07
Filing date: 1914-02-07
Publication date: 1915-12-14
Anticipated expiration: 1932-12-14

Description

E. H. MESSITER.

DUPLEX WEIGHER.

APPLICATION FILED FEB. 7. 19m

1,163,678. Patented Dec.14, 1915.

2 SH EET l.

COAL

COLUMBIA PLANOHRAFH (50., WASHINGTO N. D. c.

E. H. MESSITER.

DUPLEX WEIGHER.

APPLICATION FILED FEB. 7. 1914.

Patented Dec. 14, 1915.

2 SHEETS-SHEET 2.

INVENTOR @WVL/Z M Esges 57% 6 ATTORNEY COLUMBIA I'LANOGRAPH CD .\VJ\SHINGTON, u. c.

UNITED STATES PATENT OFFICE.

EDWIN H. MESSITER, OF BROOKLYN, NEW YORK, ASSIGNOR T0 ELECTRIC WEIGHING COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

DUPLEX WEIGHER.

To all whom it may concern Be it known that I, EDWIN H. Mnssrrnn, a citizen of the United States, and a resident of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Duplex Veighers, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to weighers for traveling conveyers and its object is to provide a simple arrangement by means of which the weight of the load carried by such a conveyer may be measured accurately.

More specifically the invention relates to the provision of weighing apparatus at two parts of an endless conveyer with means for obtaining a common reading therefrom.

Other objects will appear in the following specification in which I will describe my invention and the novel features of which I will set forth in claims.

Referring to the drawings, Figure 1 is a diagrammatic representation of an endless traveling conveyer of the bucket type with my invention applied thereto. Figs. 2 and 3 are respectively a front elevation and a plan view of an electric magnetically actuated register which may be used in carrying out the invention. In Fig. 4 is shown in elevation, partly in section, a relay such as may be used for controlling the circuits of the registers. Fig. 5 shows a bucket tripping cam lever and circuit closer which may be used in such an installation as that shown in Fig. 1.

Like characters of reference designate corresponding parts in all the figures.

10 designates an endless conveyer of the bucket type which comprises a plurality of links 11 pivotally supporting the buckets 12, rollers 13, supporting rails 14: and pulleys 15, at least oneof which is power driven to move the conveyer.

On the sides of the buckets are cams 16 and at suitable intervals pivoted cam levers 17 are provided for the purpose of tilting the buckets by engagement with the cams thereon to cause the buckets to successively discharge their contents at desired points. These cam levers may be raised into active position by pulling down a pivoted arm 18,

Specification of Letters Patent.

Patented Dec. 14, 1915.

Serial No. 817,109.

a part 19 of which is adapted to raise the cam lever and to maintain it in its raised or actuating position.

A coal car is shown at 20 the contents of which may be dumped through a chute 21 into the conveyer buckets.

22 is a coal storage bin into which coal from the conveyer may be dumped through a chute .43 or from which coal may be discharged onto the conveyer through a chute 2%.

A bank of three boilers is shown in Fig. 1 at 30, 31 and 32 above which are

chutes

25, 26 and 27 through which coal from the conveyor may be discharged into their respective boilers. Below the boilers are ash chutes 33, 3 1, 35 through which ashes from the boilers may be discharged onto the conveyer.

36 is another chute through which ashes from the conveyer may be discharged into an ash receptacle 37. A discharge spout 38 is provided near the base of this receptacle through which ashes may be discharged into a car standing in the position of the car 20.

The foregoing brief description outlines such a conveyer arrangement as might be installed in a power plant. It has been selected as illustrative of an installation with which the present invention may be used advantageously.

According to the embodiment of my invention which is shown in the drawings, a part of the track 1% is removed and replaced by a track section 1'0 which is suspended from pivoted levers 4L1. The free ends of these levers are connected with a scale beam 12 which is fulcrumed at 43 and on one part of which is a balance weight 44. From the other end of the scale beam is suspended a plunger -.5 which is adapted to be depressed into a receptacle 16 by the weight of the buckets 12 and the material, if any, therein as they pass over the rail section 10. The movement of the plunger causes the height of a body of mercury to change to vary the amount of a resistance 47 in proportion to the load on the track section 40.

A dynamo 418 is arranged to be driven at s N Q i,166,61o

pulleys 15. This dynamo is so wound that the voltage it generates is proportional to the rate of speed of the conveyer. The re sistance l? and an electric meter 49 are in a circuit which is closed across the armature of the dynamo. This arrangement is such that the meter is act rated at a rate proportional to the weight of the buckets on the rail section 20, and in proportion to the rate at which the buckets more across the rail section. This tien gires a convenient and accurate means of weighing tae con *cyer at one part of its path of ravel.

So far as the present intention is concerned, any other desired term of continuous weigher mechanism may be used, but I have shown and described the kind or weigher which 1 actually use as 1 belieye it to be the most accurate and most convenient arra igement available for this purpose.

At another part of the path of travel of the conveyer, a part of its supporting track 1% is replaced by a track section 50 suspended from piroted levers 51 which are connected with a scale beam which is arranged in the manner already described to vary the amount of i 5'? in circuit with a d 1 and a meter 59. This meter is arranged as is the other one, to be actuated in proportion to the weight of the load which it measures and in proportion to the rate of movement of the load, which in this case is the weight of the bucket and the material, if any, in them, as they pass over the rail section 50.

The elect 'ic meters shown are 01" the retary type and each may if desired, be provided with a register. In the specific embodiment of my invention which is shown,

each meter is arri need moment: ril 1 to close.

two local circuits during each its revolut-ions. Associated with meter 49 is a batte y 60 one terminal of which is connected with the shaft 01" the meter and its other terminal is connected with tl e windings of two electromagnets (31. magnet windings are also connected with stationary con tacts within the meter and thrieter mechanism is such that during a revolution of its shaft a circuit is momentarily closed through winding of magnet 61 and another circuit is momentarily closed through wind ing of magnet 62 so that these magnets are alternately energized.

lVhen magnet 61 is energized it pulls its armature 65 to the left. This is connected as shown in Fig. at to tilt a Vacuum tube (llinto such a position as to can e a small body of mercury 65 to move to the right and to close a circuit between two terminals at 66. hen magnet 62 is energized the armature 63 is pulled over to the right. This tilts the mercury tu e the opposite way, breaks the connection between the terminals 66 and connection between terminals 67 end of the time. Similar con- 68 and (3%) are alternately connected .isconnected by a similar relay arrangectuated by the meter which is lllllStl'RtQCl in Fig. ere are siown in outted more in detail in o l these rcg strs comprises an elec $70 which irough its a rinature ant and ratchet mechanism 71 i adaptc a shaft in a clocln wise directiu an elcctrc-magnet 73 which through a pawl and ratchet mechai Kl i cording my actuate any on tions. Thus 1' section on, the two weighin opposite dit p; over he weight passr, of the regtwo wei ghs1 direcore. i that pass 'ercnce betw ed on the 1. witi the two A d, .7 1 K l: swn

ch pi'oiiucd at the chat "3) o er and others 82 8 3 and at the trips abore the coal bin and abc 'c boilers Joe. 3, Q and 1 respectirely. C'ne terminal 87 of a battery 86 is connected with out of the terminals of each 01 ie i minal of this battery is connected of the relay con'acts at t The other relay contacts at 35, G are connected by conductors 38 with tne lower left hand contact of eac f the switches 80, 81, S2, 83, and 55. e other relay contacts at (38, ('39 connccteu by conductors 89 with the lower right liaud contact of each of these switches.

It it is desired to measure the an cunt of coal delivered from the car 90, the switch 80 is closed. This switch comorises a contac a which is connected at a Hih one of the actuating magnets in register 90, and is adapted to coiiierate with the lower left hand contact of the switch; and another contact 7) which is conn 2cted at 7) with the other actuating magnet of the same register.

The loaded buckets passing over tracl: section will by mechanisms wnich have been described, cause intermittent encrgiza tion of the right hand actuating magnet of register 90 at a frequency proportional to t o uL v i the of the loaded buckets and to the rate of their movement over the track section 50. This magnet will actuate the register disks in a positive directionthat is in a direction to cause these disks to show an increasing figure.

Assuming that the coal has been dumped from the buckets before they reach the track section 40, which would always be the case in the normal operation of the conveyer plant,the Weight of the buckets and of any odd pieces of coal which may have remained in them will cause intermittent energization of the actuating magnet 73 of register 90 which is a negative direction or against the operation of magnet 70. The e ect of the magnet 70 will be to register the gross weight of the buckets and the coal in them, and the effect of the magnet 73 will be to deduct the actual tare, that is the weight of the buckets and their connected parts and the weight of any undelivered coal in them. Consequently, the register 90 will register accurately the total amount of coal taken into the plant.

WVhen the coal is discharged into the bin 22, the switch 82 is closed, and its contacts at c and (1, connected at 0 and d with the actuating magnets in register 91 and operating in the manner before described will cause this register to show the weight of coal delivered to the coal bin. In a similar manner, switch 83 which is connected with register 93 will cause the latter to register the weight of coal delivered to boiler No. 3; switch 84 and register 9st will cause the weight of coal delivered to boiler No. 2 to be shown, and switch 85 and register 95 will register the weight of coal delivered to boiler No. 1.

I have also shown a means for weighing the ashes as they are delivered through chutes 33, 34 or 35 into the conveyer buckets and dumped therefrom through chute 36 into the ash bin 37. In this case the switch 81 is closed and its contact 6 is connected at 6' with the left hand actuating magnet 73 of register 92 instead of to the right hand actuating magnet, as in the other cases, and its contact f is connected with the right hand actuating magnet. This is because in this case the weight passing over the track section 40 is the gross and that passing over track section 50 is the tare.

The plant illustrated to show the operation of my invention is selected only as an example of one of the uses to which it may be put and one in which its advantages are apparent. But it is illustrative only as the invention is limited only by the restrictions in the claims, and is obviously applicable to other kinds of plants and other uses.

What I claim is:

1. In combination with an endless conveyer, two mechanically independent weighers in different parts thereof, and means for obtaining a resultant reading from said weighers.

2. In combination with an endless convcyer, two mechanically independent weighers in different parts thereof, and a registering instrument connected with and actuated by both of said weighers.

3. In combination with an endless conveyer, two weighers in different parts thereof, and a registering instrument connected with both of the weighers and arranged to be actuated in one direction by one of the weighers and in the opposite direction by the other weigher. a

In combination with an endless conveyer, two weighers in different parts thereof, two meters each arranged to be actuated by oneof the weighers, and a registering instrument connected with both of said meters.

5. In combination with an endless conveyer, two weighers in different parts thereof, two meters each arranged to be actuated by one of the weighers and a plurality of registering instruments each arranged to be connected with both of said meters.

6. In combination with an endless conveyer, two weighers in different parts thereof, two meters each arranged to be actuated by one of the weighers, a plurality of registering instruments and means for connect- 'ing any of said instruments with both of the meters.

7 In comblnation with an endless conveyer, two weighers in different parts thereof, two meters each arranged to be actuated by one of the weighers, an electro-magnetically actuated registering instrument, circuits therefor and means actuated by the meters for controlling said circuits,

8. In combination with an endless conveyer, two weighers in different parts thereof, two meters each arranged to be actuated by one of the weighers, a plurality of electro-magnetically actuated registering instruments, circuits therefor, means actuatedby the meters for controlling said circuits and switches for connecting the circuits of any desired instrument with said meter actuated means.

9. In combination with an endless conveyer, two weighers in different parts thereof, two electric meters each arranged to be actuated by one of said weighers and each comprising means for intermittently closing an electric circuit, an electro-magnetically actuated registering instrument and circuits therefor connected with both of said meters.

10. In combination with an endless conveyer, two weighers in different parts thereof, two electric meters each arranged to be actuated by one of said weighers and each comprising means for intermittently closing an electric circuit, a plurality of electroinagnetica-lly actuated registering instruments, circuits therefor and switches in said circuits arranged to connect the circuits of any of said instruments with both of said meters.

11. In combination with an endless conveyer, two weighing mechanisms in different parts thereof, each comprising a dynamo connected to be driven by the conveyer, a dynamo circuit, and a resistance and an electric meter in the dynamo circuit, said meters being arranged to intermittently close the electric circuits, and electroanagnetically actuated registering instruments and circuits therefor connected with both of said meters.

12. In combination with an endless conveyer, two weighing mechanisms in different parts thereof each comprising a dynamo connected to be driven by the conveyer, a dynamo circuit, and a resistance and an electric meter in the dynamo circuit, said meters being arranged to intermittently close the electric circuits, a plurality of electro-magnetically actuated registering instrui'nents, circuits therefor, and switches in said circuits arranged to connect the circuits of any of said instruments with both of said meters.

13. In combination with an endless conveyer, a dumping device, two weighers in different parts of the conveyer, means for obtaining a resultant reading from said weighers and means connected with said dumping device for connecting said means for obtaining a reading with both of the weighers.

4C. In combination with an endless conveyer, a dumping device, two weighers in different parts of the conveyor, a registering instrument arranged to be actuated in one direction by one of the weighers and in the opposite direction by the other weigher and means for actuating the dumping device and connecting said instrument with both of the weighers.

15. In combination with an endless c0nveyer, a dumping device, two weighers in different parts of the conveyer, a registering instrument arranged to be actuated in one direction by one of the weighers and in the opposite direction by the other weigher, and means for actuating the dumping device and connecting said instrument with both of said weighers.

16. In combination with an endless conveyer, an adjustable dumping device adapt ed to discharge into the conveyer, two weighers in different parts of the conveyer, an electro-magnetically actuated registering instrument oppositely responsive to the respective weighers, circuits for the instrument and a switch in said circuits operatively associated with the dumping device arranged to connect said circuits with said instrument when the dumping device is adjusted to operative position.

17. In combination with an endless conveyer, a plurality of dumping devices adapted to discharge into diiferent parts thereof, two weighers in different parts of the con veyer, a plurality of registering instruments each arranged to be actuated by both of the weighers and means for actuating one of the dumping devices and connecting one of said instruments with both of the weighers.

18. In combination with an endless conveyer, a plurality of dumping devices adapted to discharge into different parts thereof, an actuating mechanism for each dumping device, two weighers in different parts of the conveyer, a plurality of registering instruments each arranged to be actuated by both of the weighers and means associated with said actuating mechanisms whereby when one of them is actuated, one of said instruments is connected with both of the weighers.

19. In combination with an endless conveyer, a plurality of dumping devices in different parts thereof, an actuating mechanism for each dumping device, two weighers in diiferent parts of the conveyer, a plurality of electro-magnetically actuated registering instruments, circuits therefor, means actuated by the weighers for controlling said circuits, and switches operatively associated with said actuating mechanisms each arranged to be closed when its respective mech anism is adjusted into operative position to thereby connect the circuits of one of said instruments with both of the weighers.

20. In combination with an endless conveyer, a plurality of dumping devices in different parts thereof, an actuating mechanism for each dumping device comprising an actuating arm, a switch associated with said arm, two weighers in different parts of the conveyer, two meters eacli arranged to be actuated by one of the weighers and comprising means for intern'iittently closing an electric circuit, a plurality of elcctro-magnetically actuated re :tering instruments and circuits therefor, each of said switches being arranged to connect the circuits of one of said instruments with both of the meters when the actuating arm with which it is associated, moved to bringits respective dumping device into operative posltion.

21. In combination with an endless convcyer, a plurality of dumping devices in different parts thereof, an actuating mechanism for each dumping device comprising an actuating arm, a switch associated with said arm, two wei her mechanisms in different parts of the conveyor each comprising a dynamo connected to be driven by the con veyer, a dynamo circuit, and a resistance and an electric meter in the dynamo circuit, said meters being arranged to intermittently close the electric circuits, a plurality of electro-magnetically actuated registering instruments and circuits therefor, each of said switches being arranged to connect the circuits of one of said instruments with both of the meters when the actuating arm with which it is associated, is moved to bring its respective dumping device into operative 10 position.

In witness whereof, I have hereunto set my hand this 2nd day of February, in the copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents, Washington, I). G.