US1757773A - Control mechanism - Google Patents

Description

May 6, 1930. c. J. KLEIN ,CONTROL MEcHANIsM Filed May 15, 1928 4 Sheets-Sheet lNvENToR May 6, 1930. c. J. KLEIN CONTROL MEGHANISM Filed May 15, 19284 4 Sheets-Sheet May 6, 1930. Q 1 K| E|N 1,757,773

CQNTROL MECHANISM Filed May 15. 1928 4-SheetsSheet 3 w N 1 W N u Q N N n d 'O NWS] l N t /l |i| i i 7.

el A N Q I l QA I I Q D q Q k INVENTOR I May 6, 1930. c. J. KLEIN 1,757,773

coNTRoL MECHANISM Filed May 15, 1928 4 Sheets-Sheet 4 INVENToR Patented May 6, 1930 [UNITED STATES vCLARENCE J'. KLEIN, OF IBI-ELI.EVII'IE,4 PENNSYLVANIA, ASSIGANOB '.'IO` 'UNITED ENGI- NEERING FOUNDRY COMPANY, OF PITTSBURGH, PENNSYLVANIA, A. COBPOBA-- TION 0F PENNSYLVANIA PATENT OFFICE coN'rnor. irncnamsu Appiieauon mei-nay 15,1928. serial mi. 277,976.

The present invention relates broadly toY ing operation. Most of the coils in use at thepresent time areof the well-known collapsible type having a limited rotational movement with respect to the driving shaft, as well 1111` derstool in the' art, the construction being such that the inertia of the coiled mass car ries the saine suiciently in advance of the driving mechanism upon stoppage of such mechanism as'to insure collapsing of the reel to facilitate stripping. Y

The present invention is not concerned with the .construction of the reel, it being adapted for use with any reel `of the general type referred to, as will be more apparent-as the operation of the control mechanism ,becomes better understood. In the accompanying drawings I have shown by way of illustration only, a; c'ertain preferred embodiment of my invention. Changes in the construction and arrangement of the parts, in the type' and construction of the reel, and vin the type and manner of operation ofthe various switches, circuits and control operation may be made'without fleparting from the spirit of the invention-or the scope of my broader claims y In the-drawings:-

Figure 1 1s a side elevation of a control mechanism constructed in accordance with the present invention.

Figure 2 1s a top plan view of the mechanism of Figure 1, the housing cover for the gears being removed for purposes ofillustration.

Figure 3 is a longitudinal sectional view through a portion of the driving mechanism.

Fi re 4 is a sectional view on the line IV V of Figure 1, looking in theA direction of the arrows.

Figure 5 is a detail elevational view, on an enlarged scale, of a portion of the adjustable driving mechanism. 'l

Figure 6 is a diagrammatic layout of the control mechanism, and

' Figure 7 is a side elevational view of a portion of such mechanism. l

The control mechanismherein illustrated comprises a suitable base 2, having mounted.

thereon a'driving motor 3, effective through the gear train y rounding a reel rivingsha t 6, and mountedA as clearly. indicated in Figure 3 of the ,drawf ings.r

Secured to the sleeve for rotation ,therewith is a cone clutch member 7 within which isK disposed a similarly shaped combined clutch and braking member 8. nThe combined clutch and braking member is splined to the reduced end 9 ofthe shaft 6, in such manner as to rotate `therewith while permitting movement axially thereof. The .member 8 is faced onl opposite sides thereof, ythe facing 10 being provided for engagement with the clutchv 7,

' while the facing'l]` is provided for engagement with a stationarily mounted brake mem-` ber 12,-carriedbyfthe frame 13, ofthe machine, which in turn is securedlto the base..

The shaft 6 is provided beyond the reduced portion 9fwith an extension A14, around which is positioned a compression s ring 15, guided at its inner end by the -re uced portion9 which it surrounds, asI clearly indicated in Figure 3, and abutting at this end against a collar` 16 on the member 8.; At its opposite end itv abuts against a follower.` 17, held in A adjusted position-by nuts 18. Itl will be ap.-

parent that this construction is such that the spring 15` is normally effective for urging' members -7 and 8 into driving relationship so that the motor 3 will effect rotation of the shaft 6. This shaft at its outer end carriesa suitable reel 19, indicated inv broken lines, and of any type having a 'relative movement with respect. to the shaft foraccomplishing collapsing thereof in the manner referred to when the shaft is stopped.

4 Also carried by the frame 13 is a pivot 20,

on which is mounted `a lever 21. At an intermediate point in its length, the lever is pro, A

l for drivin a sleeve 5, sur-y vided with projections 22, extending into a oove 23, in the collar 16. The lower end of the lever 21 has a pivotal connection 24, with a piston rod 25, in the cylinder 26. The cylinder 26 has communicating therewith a pressure supply line`27, leading to al cont-rol valve 28, as indicated in Figures 2 and 6. Upon the supply of fluid under pressure through the line 27, it will be apparent that the piston is -moved tothe right, as viewed in Figure 1 of the drawings, thereby rocking the lever 21 'in a counter-clockwise direction about the pivot 20. This moves the collar 16 to the right, as viewed 'in Figure 3 of the drawings, thereby compressing the spring 15 and moving the combined clutch and brake member 8 in such manner as to bring the surface 11 into contact with the brake 12, to

, stop rotation of the shaft 6. It will be apparent thatthis movement of the member 8 automatically eifectsv disengagement thereof from the clutch 7, so that theV driving in iuence of the motor 3 is no longer transmitted by thesleeve 5` tothe shaft 6. Upon Veither decreasing the eirective action of the spring 15, yor increasingY its eiciency. This ,enables the frictional drive to Vbe carefully and accurately adjusted.

When the ldriving mechanism is stop ed, it

is desirable for the reasons herein efore 'pointed out, to stop the same at al predeterminedpoint so as to insure positioning of the reel in a manner to'acilitate entry `of the leading end of the oncoming material to be coiled.. For obtaining the desired action in t this; respect, I provide theextension 14, as

indicated diagrammatically in Figure 6, with a spring arm`32 of generally U-shape.l One end of the U is secured to the extension 14,`

and the opposite end carries a' projection 33,

.ada ted to he engaged at will with any one of t e slots 34 in theperiphery of a driving .disk 35. The disk 35 is secured to a shaft 36, on which is mounted a rotating contactor 37 The main body of this contactor, as indicated Ain Figure7 of the drawings, is of non-conducting material, electrically, but is provided with a conducting segment 38 at one point in its periphery. This segment once in each revolution of the contactor passes under the free "ends of brushes 38. One of these brushes hasa connection 39, with a line wire L constituting one side of a source of electrical energy, the other brush having a con-V i nection 40 to the terminal 41 of a stop-switch 42. The terminal 43 of the stop-switch has a connection 44 to a terminal 45 of a solenoid 46. lThe other terminal 47 of this solenoid has a connection 48.to line'wire L constituting the other side of a source of-electrical energy.` With this construction, it will be apparent that upon closing the stop-switchA `42, a potential circuit will be completed with the solenoid 46, which circuit is energized,

how-even` only when the segment 38 of the contactor v37 passes under both of the brushes 38.

This is true`for the reason that the brushes 38 are in series in the circuit of thesolenoid 46 with the stop-switch, thereby requiring simultaneous closing both of the stop-switch andof thecircuit including the brushes 38 before the solenoid 46 will le'energized.`

Upon completion -of thesolenoid circuit, this solenoid, which may be designated the stop solenoid, will move the piston 49 in the control valve 28 to the left, as viewed in Fig-` ure'6, thereby bringing the pressure supply line 50 into communication around the is` ton with the line 27 to suppl actuating -uid to the brake cylinder 26. his will in turn disengage the members 7 and 8 as described, x

and causethe members 8 and 12 to engage. By-.properly adjusting the relationship between the disk 3 5 and the extension 14 through the medium of the projection 33 and the slots 34, the exact point 'of stoppage'of the driving mechanism may be controlled.`

In orde` to eiect an emergency stop 'of the apparatus instantly, `in case vsuch an opera- I tion is required, there is rovided an emergency stop-switch 51,` havingits terminal 52 provided with a connection 53 leading to the line wire L, and 4having-its--terminaL54 provided with a connection `5,5,le`ading to the connection'44. Itw'ill'be apparent that this switch when closed is eiective for short-circuiting the portion `of the circuit including =the limit switchbru'shes 38?, thereby enabling .the stop solenoid 46 to be energized instantly by themere act of closing the emergency stop-switch 51.

In order to effect such a movement of the piston "49 in the valve casing 28, as will exhaust the line 27, there is provided a rotating switch 56, having its terminal 57 provided 4with a connection 58, to the line wire L, and its terminal 59 provided with a connection 60 to one terminal 61 of the rotating solenoid 62. The other terminal 63 of this solenoid has a connection 64 to the wire 48 connected to the line wire L.

Thus, upon closing the rotating' switch 56, v

the solenoid 62 will be energized, and the piston 49 moved into the position indicated in dotted lines in Figure 6. In this position, the line 27 will be open to exhaust, and the line 50 will be cut. off from supplying any iiuid. With the parts in this position, the spring 15 will move the members 7 and 8 into engagement for effecting a driving operation of the shaft 6 and the reel carried thereby.

' It will be apparent'from the foregoing that I have provided a'combined control and driving mechanism, including a member movable in opposite directions, for effecting a driving engagement upon movement in one direction, and braking engagement upon movement in the opposite direction. I also provide an adjustment whereby the efficiency of the frictional drive connection may be Varied at will.

The character of the operation of the combined clutch and braking member is controlled normally by separate switches actuating a solenoid controlled valve, the system including means for eifectingan emergency stop at any time. Under normal conditions,

the circuit includes a limit switch insuring stoppage at a predetermined position. The limit switch and mechanism are adjust-ably interconnected whereby this relationship can be varied, as may be found necessary or desirable.

1. The combination with a reel` driving shaft, of means for driving said shaft, means for checking the rotation of said shaft, means operable at will for stopping said shaft at any time, and other means effective for stopping said shaft only in predetermined position.

2. A contri mechanism, including a shaft, shaft driving means, shaft braking means, a limit switch operable in timed relation with said shaft, and means for adjusting the relationship between said shaft and said limit switch.

3. A control mechanism, including a shaft, shaft driving means, shaft braking means, a limit switch operable in timed relation with said shaft, means for adjusting the relationship between said shaft and said limit switch, and means in circuit with said limit switch for manually closing the circuit thereto and effecting operation of said braking means.

4. In a control mechanism), a brake, a

A clutch, a limit switch rotatable in timed relation to said clutch, and solenoid operated control means for said clutch and brake.

5. The combination with a reel, of driving mechanism, braking mechanism, means for' rendering said braking mechanism effective at any time, and other means operative for rendering said braking. means effective only at predetermined times. n

In testimony whereof I have hereunto set my hand.

CLARENCE J. KLEIN.

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