US1270994A - Controller for power-operated mechanism. - Google Patents

Description

s. T. WALKUP. CONTROLLER FOR POWER OPERATED MECHANISM.

APPLICAHON FILED NOV. 29l91l.

1 270,994. Patented July 2, 1918.

3 SHEETSSHEET l.

El. X

Attest: Inventor:

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S. T. WALKUP.

CONTROLLER FOR POWER OPERATED MECHANiSM. APPLlCAT lON FILED NQV.29. 1911.

1 ,270,994:. Patented July 2, 1918.

3 SHEETS-SHEET 2.

aw M %M rm: Imsms FEYERS cc PNDTO-LITNO wAsmNGmN. n c.

s. T. WA LKUP.

CONTROLLER FOR POWER OPERATED MECHANISM.

- APPLICATION FILED NOV. 29. I911.

1,270,994. Patented Jnly2,1918,

3 SHEETSSHEET 3.

Inventor:

* AttyJ UNITED STATES PATENT OFFICE,

sAMUEnTHoMAswALK r,or NEW YORK, 1v.-"Y., ASSIGNOR To T n-oUT nn- MMER MFG. 00., 01 MILWAUKEE, WISCONSIN, VA CORPORATION or WISCONSIN.

. CONTROLLER FOR POWER-OPERATED MECHANISM.

specificationof Letters Patent.

PatentedJuly 2, 1918.

Application filed November 29, 1911. Serial No. 663,150.

To all whom it may concern:

Be itrknown that I,: SAMUnL;T1ioMAs iVALnUr, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Controllers for Power-0peratd Mechanism, of which the following is a specification.

This invention relates to controllers for power operated machines and. is particularly useful in connection-with power operated printingpresses or similar devices adapted to feed websot paper or other material.

In the. operation of printing presses and other machines adaptedtofeed rnnsorwebs of paper or other-material breakageof :the run erweb isapt to cause injury to the machhiery, due to the webibeing wound upon :the' feeding or operating rolls or guides,- and waslei'ot' material before manual control can be depended upon to stop the feed.

'Qne otthe objects of thisinvention is to provide improved mechanism whereby the condition of the web operated upon controls the feed and supply-thereof.

Another objectis to-provide an improved web operatedcontroller for controlling electro magnetically governed-1multiple speed web-feeding machines.

Other objects and advantages will appear from'the following specification and claims.

: in the drawings Figure l is a diagrammatic-illustration of the circuit connections and apparatus.

Fig-2 is a sidewtiew partly in section of he web controlled detector.

Figs. 3 and i are front and side elevations respectively of one of the switch members.

Fig. 5 is a-top Yiew -partly in section of this switch.

"Fig. 6 is a View of some ofits details, and

Fig. 7 is a manually controlled switch which may be used.

in the preferred embodiment two separatemeans are provided vfor running the press. one at relatively slow speeds, which mav be designated the threading speeds and one at relatively high speeds, which mar be designated the operating speeds. These means are controlled by an electromagnetically actuated master controller;

When breakage, interruptionor slackening of the web occurs while the machineis running atoperating. speeds the-web is cut and the machine :is stopped although breakage at threading speeds does not eiiect these results. The machine maybe run at -threading speeds, and threading speeds only,; after suchstoppageor atany time even though the web be broken in order to. provide'for rethreading or replating the web.

Theweb of paper or other-material upon which the machine is adapted to operate passes in the direction of the arrow beneath a pivoted arm ri. This. arm or break detector ma be located at anydesired position, the customary place in printing presses being between the printing and folding mech anism. If desired SGYGlill detectors may be employed, located in various positions where breakage is most aptflco occur. The arm Anormally rests upon the web and coo1 )erateswith a switch A' which is open when "the web is under tension but is adapted to .be closed when-the web The arm and-switch thus provide a web controlled detector governed by, the condition ofithe web.

B is a paper cutter or severingydei'ice operated by a solenoid B or other electromagnetwhenever the circuit .is completed at A and-said magnet is energized. C (Fig. l) is a solenoid or other electro-magnet for controlling the motor Y that operates the press at operating speeds. D is a solenoid or other electro-magnetfor controlling a motor Y for operating thepress at slower or threading speeds, when for example, it is desired to .Fplate and thread the press. A master solenoid-E is arranged to control the'speed of operation of'the machine and the eiiect of theweb detector as will be hereinafter described. Such a master-controller for regulating the speed of the machineis well known in the art being illustrated for .examplein C. A. Dresser patent, No. 744,178, issued November 17th, 1903. F is a solenoid or other electro-magne-t which controls the current to the solenoid E, and is itself controlled, indirectly, by the movements ofthe arm" A, and other devices hereinafter described. All the electro-magnets C, D, E and F, as well as certain contact devices abovethe same are supported uponan insulating board or plate G at an convenient'point. H is an nects the contacts D D electro-magnet mounted upon an insulating board 1. p

The upper extension E of the core E of solenoid E supports a contact bar E arranged to connect a stationary contact member J with stationary contact members or J according to its position. Above and alining with the extension E is a rod E which passes loosely through a sleeve E, said sleeve being mounted to slide in bearings E secured to an insulating late G supported by bars Cr extending mm the plate G. This rod E supports on its upper end an adjustable collar E and below the sleeve E a like collar E, which two collars force the sleeve to move downward or upward according to the direction of the movement of the rod E which, as hereinafter explained, is at times forced upward by the extension E the end of which enters a socket of a block Q secured to the rod E The sleeve E carries a conducting cross bar E having at its ends contact pointsfE in position to slide upon the contacts J and complete a circuit through them, all for purposes that will presently appear.

The core of the solenoid C supports a bar G, which when the solenoid is energized, connects contacts C 0 and completes a circuit to'a motor Y for running the press at operating speeds. Similarly upon the energizing of the solenoid D a bar D conand completes a circuit to motor Y adapted to run the press at threading speeds. In likemanner, the bar F when the solenoid F is energized, connects the contacts F F and completes a circuitfor the master solenoid E.

Normally, while the press is at operating speeds, the contacts J 3 (see Figs. 1, 3, 4, 5) are interconnected by the bar E the contacts J, J are connected by the bar E (Fig. 1) and a circuit is completed from the generator X through the coil C, contact J bar E contact J, wire K, one contact H bar H (upon the core of the relay solenoid H), the other contact H and wire K back to generator X, while circuits through solenoids D, F, and E are broken. The solenoids B .and H are in different circuits, from a common generator X both of said circuits being normally broken at A and when the machine is running at threading speeds, at E between the contacts J and E If the circuit at A and E be closed, current will pass from generator X through wirev L, contacts A wire L, solenoid B, wire L contacts J bar E, and wire L back to generator X. At the same time current passes through wire L,

7 contacts A wires L L rela H wire L movable conducting; arm I, contact H ,wire Licontacts J and E wire L and generator X. These clrcults are completed only when there is an undue slack in the web W Supporting the J scribed, cause the two contacts at A to meet,

and thus complete the circuits just traced. When the above mentioned circuits are completed, the consequent energization of solenoid H lifts its core, and downward extension H and bar or disk H from the con-1 tactsH and the circuit through solenoids C will be broken and solenoid C will be deenergized. The contacts H however, are now connected, thus completing the circuit from the generator X through the solenoid F, which causes the bar F to rise, and completes a circuit from the generator X through the master solenoid E and energize's. it. This raises the core E and all its attachments, including the contact bars E and E thereby breaking all the circuits except that through solenoid E, bar E being carried above J and J and E above J J as shown in Fig. 1. The, parts will then allagain be in initial position ready for starting the press.

The contact at A is shown in enlarged detail in Fig. 2, wherein is a movable contact member mounted on an insulating plate a, itself carried by an arm 6 rocking about the axis of a shaft 2 supported by an insulated plate 0 to the upper part of which is secured a contact d to co-act with the contact 1. 3 is a light spring interposed between the plates 0 and b, and normally keeping the contacts 1 and d apart. The arms A, normally rest upon and are supported by the web of paper Was it passes through the press. When the web W sagsmaterially or breaks,.the arms A fall by gravity and cause cam or arm a to move the arm 6 so that the contact 1 will meet the contact cl, against the tension of the spring 3, and the circuit be completed at A;

The arms A are small rods of suitable construction adjustably fixed to a rock shaft 5 upon which is fixed a cam 4 adapted to act against the arm 6.

Figs. 3, 4, 5, 6, show details of certain of the devices illustrated in Fig. 1. The sliding sleeve E forms a guide and bearing for the rod E and the adjustable collars E", E upon said rod push the sleeve upward and downward when the rod slides beyond certain limits. A friction member W pressed against the sleeve E by a spring W (Fig. 6), serves to support said sleeve and its contact arm E when the sleeve is not acted upon by either collar E or E The contacts E carried by the bar E are preferably spring contacts, springs E inclosed initubes E causing tension of the same upon the plate G and fixed contacts J spring S The contact plate H supported by the core of the solenoidH, is insulated from the core, and held between two springs Z carried by an extension of the core, to secure cushioning and automatic adustment of said plate. V

The core H is also provided with an upward extension H and if the current through this solenoid should be excessive.

-, this extension H breaks the circuit at H by raising the arm I and causes the current to pass through the resistance coil at H (Fig. l).

The core Eof the master solenoid E is provided near its lower end with a rack S with which is adapted to engage the beveled end ofa rod S (Fig. 1) extending from the core of a solenoid S, said rod being kept in engagement with said rack by a tension Initially, this rod S holds the core, its extension E and the rod E in raisedposition so that all circuits are broken. This master controller, besides controlling the completion of circuits through solenoids C and D, as hereinbefore explained, may also control the speed of the motors for operating the press as explained in the above mentioned patent to Dresser. Since the operation of the master controller, in varying the speeds of the motor, is well known the resistances, contacts, etc, are not shown in detail.

If, now, it be desired to operate the press, the circuit S through the solenoid S is closed, momentarily, asby a push button or similar circuit breaker. This will cause the pawl S to retract, and allows the parts supported therebyio descend, the pawl reengag'ing the rack and stopping the bar E in position to complete the circuit through solenoid D and contacts J, J, thus causing the press to operate at slow or threading speed as hereinbefore described. The descent, however, is not great enough to bring the collar E against the sleeve E and hence the two circuits from generator X remain broken at E and the solenoids B and H are not energized, and cannot be energized by any chance closing of the break at A in threading the'press. Even if the circuits from generator X were completed, the only effect would be to energize the solenoid E andrestore all parts to initial position where all circuits are broken.

Thepress being threaded and with a web W passing under and holding up the arms'A and the press otherwise ready for use, a second closing of the circuit through the solenoid'S again retracts-the rod S, and the arm E falls, thus causing thebar E todrop to J 2 and'close the circuit through the solenoid C, which instantly raises the bar C completing the circuit broken at C C and thus putting the press into operationat the higher'speed. The circuit for solenoid Dis broken and the threading speed motor Y is stopped. The same descent of the core E allows the rod E and its collar to fall, and carry the sleeveE and bar E down ward, closing the break at E from the generator X. The press will then run indefinitely so long as the web remains taut. But if at any time there is an undue deflection or sagging of the web ll that will permit the contact arms A to drop, both the circuits from X will beclosed, and the entering web will be instantly severed by the cutter B, the solenoid H is energized, breaking the high speed circuit as above described through the solenoid C, and completing the circuit through the solenoids F and E, thus energizing the same. The energizing of solenoid E' will draw up the core E", and its connected parts, so that they will assume their initial positions, as shown in Fig. 1, with all circuits broken, and the apparatus ready for again threading and operating. Thus the slackening of the web and the con sequent operation of the web detector will or will not effect automatic stoppage of the press depending upon the condition of the master controller. The severing oi the web is also dependent upon the condition of the master controller. If the plunger of the solenoid E is lowered sufliciently to interconnect contacts J and J the press is run ning at operating speeds and contacts and J are also closed. The slackening oi the web W to allow the closure of contact A then causes the operation of cutter B and solenoids H, C, F and E, the press is stopped and the parts are restored to normal nonrunning position. The supply of the web is also interrupted by the severing thereof by cutter B. If, on the other hand, the plunger of solenoid E is lowered only to the extent that contacts J and J are not interconnected and contacts J and J are interconnected the press will be running at thread ing speeds because only motor solenoid D canbe energized. Under such condition the slackening of the web and closure of contact A can cause no current to flow either through the cutter solenoid B or the solenoid H. The condition 'ofthe web can therefore exert no influence upon the running of the press and the machine can be run at threading speeds to rethread the web. If, how ever, an attempt is made to accelerate the press beyond threading speeds before the web is rethreaded and the contacts A. are open, circuit is immediately completed through cutter solenoid B and solenoid Li soon as the plunger ot'solenoid E causes the interconnection of contacts J Thereupon the press-will be stopped and the web again severed Thus the press can be operated at threading speeds regardless of the condition of the web, is automatically stopped and the Web severed when slackening of the web ocr; other branch 26 of that conductor.

curs while the press is running at operating speeds, and any inadvertent acceleration of the press beyond a certain point while the Web is being rethreaded is prevented.

It is sometimes desirable to be able to break the web cutter circuit, the press stop circuit and the controlling circuit for the slow-motion operating devices, independently of the devices herein before described, and hence I provide at any convenient point a manually operating controller (Fig. 7) consisting of a lever 21 for riding over a quadrant 22 which is provided with a contact segment 23 having the lever pivot 24 as a fulcrum. The lever 21' is provided with the usual contact projection 21 which moves along this segment 23 and leaves it, breaking contact, when the lever is swung to the position shown in dotted lines. The contact point on the lever is electrically connected with one branch 25 of a conductor forming part of each ofthe' controlling circuits having the generator X, while the segment 23 is similarly connected to the It follows that all the controller circuits may be opened at this point.

From the above it Willbe evident that by the use of my invention, a printing press can be run at any desired speed and with perfect safety and with as little delayas possible when the web is severed, and without danger of the web bunching or snowing up.

It will also be evident that my invention a is not limited to the precise construction described and shown, as many changes and variations may be made therein without cleparting therefrom. 7

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

1. In a control for a poweroperated machine through which a web passes of the class wherein an electromagnetically actuated master controller regulates the speeds at which the machine is driven, the combination of means dependent upon the condition of the web and cooperating with said master controller when the speed of the machine is above a predetermined value to control a the operation of the machine.

- of the class wherein an electromagnetically actuated master controller regulates the speeds of the machine, the combination with a web tension detector cooperating with said master controller to stop the machine when the tension of the web decreases while-the machine is operating above a predetermined speed, and means for allowing the machine to be driven below, but not above, a predetermined speed until the tension of the web is restored. r

4. In combination with a machine through which a web passes, means adapted to drive said machine, an electromagnetically operated master controller for controlling said means to drive said machine at different speeds, and means dependent upon the condition of the web for controlling said master controller. 7

5. The'combination of means adapted to drive at different speeds, a web feeding machine adapted to be driven'by said means, a web actuated circuit controller, and an electromagnetically actuated controller for con trolling said means to drive the machine at different speeds and rendering said circuit controller effective.

6. The combination with a machine through which a web passes, and means for severing the web, of driving means adapted to drive the machine at different speeds, an electromagnetically actuated controller for regulating the speeds of said driving means, and means dependent upon the condition of the web for controlling said controller and said web severing means.

7. The combination of a web feeding machine, a source of power for driving said machine at threading speed and operating speed, an electromagnetically actuated device for determining the speeds at which said machine shall be driven and means automatically acting to stop the machine upon breakage of the web when the machine V is running at operating speed but not when it is running at threading speed.

8. In'combination with a printing press of driving means therefor, a threading speed controller for said means, an operating speed controller for said means, a master switch for controlling the operation of both said controllers, and a web controlled switch for controlling said master switch.

9. The combination of a master relay, a; threading speed control relay, an operating speed control relay, driving means controlled by said relays, a web feeding machine adapted to be driven by said means at different speeds, and means controlled by the breakage of the web for causing said master relay to affect the other relays to stop the machine. V

10. A controller for power operated web feeding machines, comprising a threading speed motor, an operating speed motor, a relay for controlling said threading speed motor, a relay for controlling said operating speed motor, a master relay, circuit connections affected by said master relay for controlling a circuit for either of the other relays dependent upon the condition of said 130 master relay, and means affected by breakage of the Web for stopping the machine.

11. A controller for power operated machines adapted to be driven at different speeds and operate upon a Web, which has a pair of relays each controlling the operation of the machine at a certain speed, a Web condition detector, and a master relay con trolling the operation of the other two relays and rendering said detector effective or ineflective to stop the machine.

12. For a machine adapted to be driven at threading and at operating speeds and feed a web of material, a controller having a de tector afiected by the condition of Web, and a master relay controlling the threading and operating speed conditions of the machine and rendering said detector effective to stop the press at operating speeds but not at threading speeds.

13. In a control system for a machine adapted to be driven at threading and operating speeds and feed a Web of material, a Web severing device a Web condition detector, and a master relay controlling the threading and operating speed conditions of the machine and rendering said detector effective to cause the operation of said severing device to cut the Web and to stop the machine.

14. For a machine adapted to be driven at threading and at operating speeds and to operate upon a Web of material passing therethrough, a controller having a web condition detector, and a relay controlling the threading and operating speed conditions of the machine and rendering said detector ef fective to control the operation of the machine at operating speeds but not at thread ing speeds.

15. A control system for a machine adapted to operate upon a Web of material and to be run at threading and at operating speeds, having a relay for controlling both speed conditions, a Web condition detector, and means aifected by said relay when said relay is in position to affect operating speed but not When it is in position to affect threading speed to render said detector effective to stop the machine.

SAMUEL THOMAS VVALKUP.

Vitnesses PENNINGTON HALSTED, EDWIN SEGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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