US1217971A - Automatic press-trip. - Google Patents

Description

1. L. MCKINDLEY L s.y B. KLNDY.

- AUTOMATIC PRESS TRIP. APPLICATION FILED 1AN.21. 1915.

'Pm-,ema M11. La, 1917.

3 SHEETS-SHEET l.

/A/l/fA/TOPS.'

Jqim A TTOR E Y.

Jam/109515. Km

vl H l. L. McKINDLEY & S. B. KINDY.

AUTOMATIC PRESS TRIP. APPLICATION. FILED IAN. 21. IsIs.

Patented Mar. 6, 1917.

3 SHEETS-SHEET 2.

"UNITED STATES PATENT OFFICE.

JOHN L. MOKINDLEY A1\`I'ID` SAMUEL B. KN'DY, 0F TORONTO, CANADA.

Specification of Letters Patent.

' AUTOMATIC PRESS-TRIP.

Patented Mar. e, 1917.

Application sied Janaary 21, 15515. serial No. 3,603.

To all whom t may concern.'

Be it known that we, JOHN L. McKrND- yLEY and SAMUEL B. KINDY, subjects of the King of Great Britain, residing at Toronto,

Canada, have invented certain new anduseful Improvements in Automatic Press- Trips, of which the following is a specification.

This invention relates to improvements in automatic printing press trips and has to do more particularly ywith an improved attachment conm'sting of an actuating means for-operating press trip mechanism which is initially installed with the press. l

It is one of the objects'of this invention to provide an electrically operated actuating means for the trip mechanism, andthere isv involved in this improvement) a novel sheet controlled means, which constitutes, in prac- Y tice, a ,make and break device for opening and closing circuit, such make and break device beingcontrolled by the said sheet.

A further object ofthe invention is to incorporate in the circuit of the actuating means a timer make and break device which will serve Ato close circuit and render the v sheet controlled make and break operative,

only during sheet feeding periods, so 'as' thereby to greatly economize the batteries orlike source of current.

The invention also involves the novel feature of providing a sheet controlled make and break device, certain members of which are in the form ;of feelers, which are y arranged to coact lwith the feed board tongues in such a' manner as to dispense with the necessity of employing dropguides.

A' still further object of the invention is to provide feelers which are independently movable toward and away from the fed. board tongues, thereby rendering the feelers self adjustable as regardsdii'erent ,thicknesses of paper and always insuring contact -of'the feelers with the feed board tongue so as to complete circuit, when such parts are in the form of. circuit terminals, to energize and actuate the press trip'mechanism.

In accordance with the device of our invention, the usual foottrip mechanism may be used without regard as to whether or not our invention -is applied to the press, as

either can operate'to actuate the trip mechamsm wlthout interference from the-other. 4Numerous other objectsfand features of the inventionv will be more fully described in connection with the accompanying drawtion with one of the feed board tongues, ad-

jacent mechanism being also shown.

Fig. 3is a perspective 'view of a driving and operating cam and also of an improved timer make and .break device.

Fig. 4 is a sectional 'view of the shaft shown in Fig. 3 illustrating a ratchet thereon in elevation. l

Fig. 5 is a similar view illustrating the cam in elevation.

Fig. 6 is a side elevation of one of the drop blocks as shown in Fig. 2.

LlkeA `:Characters of reference designate similar lparts throughout the dierent figures of the drawings.

As illustrated, 1 ydesignates the frame of the press, as a whole, and 2 ldesignates the cam lshaft Vwith which the press is initially provided. controlling cam 3, which may preferably be split to facilitate ready attachment when the invention is in the form of an'attachment, the' cam. 3 being loosely mounted upon cain shaft 2. A split ratchet 4, having a hub 5, is keyed or otherwise fixed to cam shaft v2 and is provided With one tooth 6, when such parts are in registry.

The direction of rotatlon of the cam shaft 2, is contra-clockwise, viewed from'Fig. 1,'and therefore it will be seen that as the ratchet 4 rotates, the tooth will engage pawl 7 and 20 plied in 50 of circuit terminals.

55 described. The feelers advance or drive the cam 3 in prescribed relation with ratchet Furthermore, the pawl and ratchet device permits of backing up the press, for any of the usual purposes,

5 and insures connection of the cam with the cam shaft in proper timed relation by reason of the fact that there is only one tooth for engagement with the pawl, when the shaft 2, is driven in its normal direction of rotation.

That portion of the press trip mechanism which it is pertinent to describe to illustrate the application of the device of our invention thereto, includes a spring actuated member or arm 9, mounted on shaft 10, and havspring 14 while the roller 11 is in engageing a roller 11 ment with this retaining peripheral portion from to which l will designate as 15. rlhe cam 3 has a releasing portion 16, which is cut away and is of shorter radii than the retaining portion 15, and which permits of actuation of the press trip by the spring 14 on a mis-feed or for other conditions which may be imposed. To arm 9, at 17, is pivoted one end of feed detent link 18, the remaining end of which is pivoted at 19, to one arm of abell crank lever 20. The

remaining arm bell crank lever,

21, of said is pivoted at 22, toa raising link 23. Raising link 23 is connected to mechanism which will be designated as a whole at 24,

'40 and the operation of which serves to trip the press. A foot trip, designated as a whole at 25, also operates in connection with mechanism 24 to trip the press when the operator desires to perform this operation ^-independently ofthe device of our invenion.

The feed board is indicated as a whole at v26, and tongues 27 project therefrom and in the present invention, perform the function Feelers 28, having hook-shaped ends 29 and balled terminals, function as circuit terminals for coaction with the tongue terminals 27, to close circuit through apparatus which will presently be the place of and in substitution of the usual drop guides and act to steady the sheet before guides 31 raise, and until the sheet is engaged by the grippers ofthe cylinder.

novel form of mounting is providedfor the feelers 28, the Shanks thereof being pivoted to feeler blocks 32, at 33, for independent movement of the feelers with respect to each other irrespective of the thickness of the 28, also function in paper being fed. Upon downward movement of the feelers 28, the interposed sheet of paper will prevent contact between the feeler terminals 28 and the tongue terminals l27, thereby holding the circuit open and preventing electrical energization of the actuating mechanism. lf for any reason whatsoever, such as out of time feeding, the paper was not interposed between the feelers 28 and the tongues 27, then circuit will be closed and the device of our invention would be energized to trip the press.

Now referring more particularly to the mounting of the feelers 28, the blocks 32 are shown formed in two parts, more particularly in Fig. 6, indicated at 32 and 34. A block of insulation 35 is interposed between the block sections 32 and 34 and the parts are secured together by means such as rivets 36, which pass through extensions 37 with which the insulating block 35 is formed. Now the feeler blocks 32 are mounted upon a drop guide shaft 38, suitably journaled in the frame of the press, as indicated at 39. Actuating means for ,the shaft 38 is not shown as it may be of the usual type. Drop blocks, at the ends of the shaft 38, one only being shown, is indicated at 40, the portion 40 being insulated from the shaft portion 41 by an insulating block 42, in a manner similar to the feeler blocks 32. A conducting or live shaft or rod 43 is mounted in the drop and feeler blocks in such a manner as to lie at one side of the points of pivotal mounting 33 of the feeler blocks 32, and to also cross the feelers, preferably underneath the same, free upward movement of the feelers independently of each other and of the rod 43,y

but to prevent downward movement of the feelers 28 in case the mounting therefor, through actuation of shaft 38, is elevated. A rest 45, is mounted oneach end of the frame 1, only one being shown, so that the feelers and their mounting can be swung back into an inoperative position with the ends of the rod 43 seating in the rest 45.

rThe circuit, and the parts interposed therein for operation of the device of our invention, will neXt be described in detail. rThe source of current is indicated at 46, in the form of batteries, which are electrically connected with each other by conductors 47, 48 and 49. One limb of the circuit designated at 5 0, leads from one pple of the source of current to a magnet 51. rom magnet 51, a conductor of the circuit designated at 52, is connected with the conducting or live rod 43. From said rod 43, current is conveyed to the blocks 32 to feelers 28, and if the latter are in contact with tongue terminals 27, through the press frame to one member 53 of a timer make and break device. rlfhe member 53 of said as indicated at 44, so as to permit so as to reduce wear of timer 'make and break device is mounted upon cam 3, as 'will be more clearly seen by reference to Fig. 3, anda spring or like wiper 54 coactswith the timer contact 53 to4 close the circuit during feeding periods to maintain the circuit open at other times So as to effectthe greatest battery economy. Wiper 54 is mounted upon a stub shaft 55, suitably insulated from the frame 1 of the pre, and a conductor 56 connects wiper 54 with the remaining pole of the source of current. It will now be seen that the insulating blocks 35 and 42 prevent current from short circuiting through the press without taking its course through the feelers and feed vboard tongues, the latter constituting circuit terminals.

A detent device is provided forl holding the trip mechanism against operation even when the roller 11 is released for operation by the releasing portion 16 of the cam 3.

As illustrated, the detent link 18 is providedwith a detent notch for engagement by the pawl en'd 57 of a detent which is plvoted to the press frame 1 at 58. The detent is in the form of a bell crank lever having a magnet arm 59 which is within the field of the magnet 51 so as to be attracted thereby to release the trip mecha.- nism for actuation under the action of spring 14 when the circuit has been closed. The pawl end 57 is somewhat wider than the detent link 18 so as to slightly overlap the periphery of cam 3. Cam 3 has two actuatlng or raised portions 60 and 61 which serve to elevate the detent as the cam rotates, twice in each revolution f the latter, the working parts.

It will now be clear, that if the feelers 28 descend upon a sheet of paper which has been fed in timely manner, the paper will insulate feeler terminals from the tongue terminals and hold the circuit open. however a sheet has not been fed in'timely manner, then the feelers 28 will descend upon the tongues 27, and in direct contact therewith, so as to close clrcuit and effect operation of the press trip mechanism.` It will also be noted that it is not neceary for both of the feelers to contact with the tongues, as any imperfect or untimely feedlng of the sheet for making either feelers to contact with its respective tongue, will close circuit and effect trip operation.

It will also be seen that when the feelers have been thrown into neutral position,.or an inoperative position, with the rod 43 seated on the rest 45, it will be ossible to run the press tripped when the eed board is raised, it being not necessary to lower the feed board to draw an impression because of the fact the feelers can be thrown to a back limit out of contact position.

The use of our invention will insure more perfect register, since it will allow the feeders to devote all of their time to feeding sheets thus, preventing mis-tripping and avoiding wash-ups on the cylinder.

By means of the pawl 7 and the onetooth ratchet, the press maybe backed without injury to the machine, and when driven in a feeding direction, the parts will always bein timed relation.

It will also be-noted that the feelers 28 serve to lock out a sheet which has been fed too late, the sheet being left on the feed board until the guides drop so that it may be properly placed to the guides.

While we have herein shown one specific form of our invention, we do not wish to be limited thereto except for such limita tions as the claims may import.

We claim z- A 1.y In a printing press, a trip mechanism, electrical means for actuating said mechanism including tongue and feeler terminals for closing said circuit when in engagement and openlng said circuit when a sheet 1S fed therebetween, said feelers being independently movable with respect to each other toward and away from said tongues, substantially as described. l 2. In a printing press, trip mechanism actuating means includin a live rod movable toward andfrom ffeed positions, and feelers mounted for independent -movement with respect to each other and with respect to said rod and extending across the latter to beshifted thereby, substantially as described.'

3. In a printing press, trip mechanism actuating means including a circuit having tongue and feeler terminals for controlling said circuit by a fed sheet, and mounting means for said feelersy comprising a drop shaft, drop and feeler blocks on said shaft, said feelers being pivotally mounted in said feeler blocks, and a live rod journaled in vsaid blocks and disposed across said feelers and at one side of the points of pivotal mounting of the latter, substantially as described.

4.. In a printing press, trip mechanism actuating means including a circuit having tongue and feeler terminals for controlling said circuit by a fed sheet, and mounting means for said' feelers comprising pivotally mounted blocks pivotally connected with said feelers, and a live rod mounted in said blocks and disposed across said feelers and at `one side of the points of pivotal connection of the latter with said blocks, substanv tially as described.

5. In a printing press, tr1p mechanism including a spring actuated member, a cam` shaft, a c am looseon said shaft forcontrolling said member, a detent normally holding said trip mechanism against' operation,

10 from the press for engagement a ratchet fixed on said shaft, a ratchet pawl on said cam for engagement With said ratchet to drive said cam, a timer contact on said cam, a circuit grounded through the press and including sheet actuated terminals for opening and closing said circuit, a magnet in said circuit for operating said detent to release said mechanism, and a iXed timer contact in said circuit and with said insulated cam contact to close said circuit and render JOHN L. MoKlNDLEY. SAMUEL B. KNDY. Witnesses:

D. S. TOVELL, H. M. CHRISTMAN.

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