US586898A - Said alfred f - Google Patents

Description

(No Model.)

3 Sheets-Smet 1.- A. I'. 8v C. G. HARRIS 8v W. H. SMILEY.

PRINTlNG MACHINE.y

Patented July 20, 1897,

' Noi 588,898.

(No Model.) v 3 Sheetsf-Sheet. 2.

A. P. 8v C. G.A HARRIS 8u W.. H. SMILEY.

y `PRINTING MACHINE.

No. 586,898. 13a/sented July 20, 1897.

(No Model.) 3 Sheets- Sheet 3.v

. P. 8v C. G. HARRIS 8v W. H.'SMILEY.

' PRINTING MACHINE.

Patented July 207 189.7.l N21 da,

Wbb/mme@ of@ i'\ lv o -ALFRED F. HARRIS,SCHARLES trap or traps, the

UNITED STATESl PATENT OFFICE.

HARRIS, AND WILLIAM 11. SMILEY, or

N ILES, OHIO; SAID ALFRED F. HARRIS ANDSAID SMILEY ASSIGNOR-,S TO

SAID OHARLESG. HARRIS.

PRINTING- MACHINE.

l l SPECIFICATION forming part of Letters Patent No. 586,898, dated July 20, 1897.l

Appncstion fina April 27, 1895.

. `.The object of the invention is to provide improved means for automatically stopping the printing operation instantly'any break or interruption occurs in the feed-supply. This end may be'attainedby effecting the lowering of the axis lof the impression-cylinder sufficiently to avoid contact therewith of the type or impression plates of the plate-carrying cylinder or bed and also byautomatically shifting the driving-belt from the fast to a loose pulley, thereby entirely stopping the operation of the'press. The first mentioned is the result of throw-o5 mechanism and the last mentioned stop mechanism. means by which these objects may be accomplished comprises an electric circuit which is broken when the proper feed-supplyis maintained and closedinstantly any breakor interruption occurs in said supply, the closing of said circuit resulting iny the-lowering or shifting of the impression-cylinder and the shifting of the drivin g-belt, causing the printing to cease land bringing the press to a complete stop.- The means also comprises two contact-points in the velectric circuit and a latter being yconnected to mechanism for shifting the impression-cylinder and releasing'l the belt-shifter. The circuit is broken as long as `the supply of paper is regular and uniform, Abutpinstantly any break occurs therein, ora sheet of paper is not properly fed to the press, or. too many sheets are fed, the circuit is closed through two contact-points and the trap is operated, eecting the lowering of the impression-cylinder and the shifting of the driving-belt. The paper as' it is being fed to the press feed, there is The.

sensing. 547,365. (No man.)

at the contact-points, but if atthe time the circuit would otherwise be complete the paper should not be properly positioned, or, in the case of a continuous any break in the web, the circuit is closed and the press ceases to operate, thus preventing any impression being made on the blanket-sheet of the impression-cylinder. The electric circuit embraces two cir, cuit-closing devices, one lying in the pat-h of the sheet to be fed and designed to be open during the uniform passage ofthe sheets, the other circuit-closing device being at another point in the circuit and designed to be intermittently openedy and closed, the arrangement being such that if the proper feed is breaks the circuit maintained one of the circuit-@losers will be4 In the accompanying drawings, Figure l is A a view in perspective of a portion of a printing-press, showing the application of our in- 'ventioIL cylinder, showing portions of the supportingframe in section. Fig. 2 represents a series of details. ',liig. 3 isa diagrammatical view of the electrical appliance. Fig. 4' is an enlarged view in perspective of the belt-shifting mechanism. Fig.

tion of our invention4 to a continuous-web press, the electrical connections other thany the contact-points, aswell as. parts of the ma: chinery, being omitted. Fig. 6 is a view of the trap with parts broken away. Fig."7 is a detail-perspective view of the belt-shifter. Referring to the drawings, A designates the framework of a job-press, portions only of which are shown. 4

. a -is the type-carrying cylinder, anda is the impression-cylinder, whose journals a2 are eccentrically mounted in cylindrical portions as. of cams gt4, said cylindrical portions fitting in holes ax in the sides of frame A. The louter face of each cam'has an arm a5 and an adjustable extension a6,`which is united thereto by a nut a7 engaging threaded por- Fig. 2 is a view of the impression- 5 shows the applical tions a8 and a9. At its upper curved end this 'to a short arm am, fast -short projection b2.

extension of the cam is pivotally connected on a rock-shaft am, supported by frame A.

the illustration anddescription of the mechanism at one side being suflicient to enable the invention to be understood. On the outer end of each journal a2 is a disk B, on the periphery of` which is a shoulder b. On the end of shaft al2 is keyed a handle b', having a When this -handle is raised, as shown in full lines, Fig. l, the cam cutis so positioned that the impression-cylinder is in proper alinement to receive the impression o the type; but when said handle is lowered, as seen in dotted lines, the cam is turned suiiciently far to lower the said impression-cylinder to prevent contact of the type therewith, said-cylinder being lowered about one thirty-second of an inch, but not enough to cause the disengagement of the teeth of the gear-wheels b3 b4 on the journals of the two cylinders a and a.

To a cross-piece C of frame A is connected an uprightbar d, suitable insulation being placed between said cross-piece and bar. To this bar, near its upper end, is connected a block d', from which .extends a springtongue d2, the same being curved in the line of travel of the papel'. XVith this tongue is designed to engage (when no paper is in the way) an upper tongue d3, which is attached by a brass blockv 0lnl to a rock-shaft d5 of the press, suitable insulation being placed between said block and the rock-shaft. This shaft is broken away near its center in Fig. 1v to clearly show these upper and lower tongues.

To bar d is connected a lower auxiliary tongue d6, with which the tongue cl2 is designed to contact in the event of too many sheets of paper being fed at one time, said tongue d6 being of course insulated from said bar. The series of rollers and the feed mechanism by which the paperis fed tothe press will not be described. 1

It is sufficient in the present case to s'ay that the sheets of paper in being fed to the impression-cylinder pass between these two tongues d2 d3 and, as will hereinafter be-seen, serve to break the circuit established between said tongues, and in the event of more than one sheet being fed at a time the tongue d2 is forced into contact with the auxiliary tongue, as before stated. To one end of shaft d5 is Aconnected an arm di, the free end of which rests upon the periphery-of disk B. The rocking of this shaft is not sufficient to disengage the tongues d2 da, one of which, (preferably the lower tongue (12,) being made of light spring metal, constantly remains in contact with the other tongue cl3, save when separated by an interposed sheet of paper.

E is a battery from which leads a wire e, which is connected by a brass post e' to bar d, the charge of said bar extending to tongue The above construction is the same at both sides of the machine,

d2, which, if there beno paper in the Way, is communicated to tongue d3 and `from the latter through a wire e2 to a trap F through the magnets f therein, and thence through Wire e5, having a movable' arm e6, connected to a second post e, from e3 to a post e4 of a switch which leads a wire eB-to a second switch e9,

'from which leads a wire ew to battery E.

The switch e has a movable arm cl2, which is moved to break the circuit. when the press is not in operation, so as to save the battery. The movable arm e, however, of switch e5 is connected by a finger e13 to arm dl and is thereby caused to move with said latter arm,

the completion of the circuit at this point be ing possible only when arm e6 contacts with post e4. This occurs at the time when a sheet of paper is or should be between said tongues. The lower auxiliary tongue d6 is connected to wire e2 by a branch wire c,

The trapF may be of any struction. Ve have shown a box f', from which extends a spring-held rod f2, which is connected by a chain f3 to the projection 112 of handle b'. tended by a lever f4, fulcrumed at f5, which in turn is held by a second lever f6, fulcrumed at f7. This latter lever is extended into close proximity to magnets f and acts as an armature. 1t is normally held away from the magnets by aspringfs. are charged, the armature -lever is drawn thereto, lfreeing the trip-lever f4, which per mits the lowering of rod f2 under the action of its spring. This lowering ofnsaid'latter rod draws on chain f3, which effects the partial rotation of shaft am, causing the slight movement of cam a4 and allowing the impression-cylinder to be lowered. The conditions under which this may be brought about will now bedescribed. v

A sheet of paper'passing between the two tongues d2 and di breaks the circuit at that point. These two tongues are in direct contact during the interim between sheets, but no circuit is made, because at that time the switch-arm e6 is out of contact with post e, the arm d" being lowered at its outer end; but at the proper time-that is to say, just after a sheet has or should have started between the two tongues-the shoulder of disk B raises the router end of arm d?, causing switch-arm c6 to contact with post e4. If the paper has been properly fed, the otherwise complete circuit is broken between tongues d2 and d3, but should the paper be not in position or should rnmple or twist then the two tongues being in contact the entire circuit is completed and the magnet f of trap F- is charged and draws the armature-lever, allowing the spring-pressed rod to lower and hence draw on projection b2 and eiect the lowering of the im'pression-cylinder. When. the feed is properly adjusted, the circuit in the meantime being broken by switch c, the impression-cylinder is returned to its normal position by raising the handle b', the spring-held The rod f 2 is normally held ex' Vhen the magnetsv preferred con- IOO IXO

at one time,

cuit by contact of tongue d2 with auxiliary seesos y rod of the ltrap being again locked by thereturn of the levers of the trap totheir normal positions. The same result is obtained in the event of too many sheets being fed forward causing the closing of thecirftongue d6.

The invention here involved is not confined to job or single-sheet'presses, since it may be employed in connection with a web-press. In Fig. 5 we have outlined the cylinders of a webpressv and the paper-roll,

'shown at g, extended to said cylinder. When soy extended, it contacts with the lower-end o f an arm or tongue g', secured on a looselymounted sha ft g2 by a brass screw g3a to which one wire '(4 of the circuit ma be connected. J Y

-Thisarm or, tongue extends upwardly, so as -to engage a second tongue g5, held by a screw Q6, to which a second wire. g8 is connected.

Then the paper isbeing fed,'the tension thereof holds the lower arm o'r tongue away from tongue g5; but should any break occur in the-web the two tongues will instantly contact, causing the closing of the circuit and lthe lowering of the impression-cylinder lby the mechanism above described or other preferred means.

For the sake of perspicuity we have shown in Fig. l'the trap and the handle b'on the same side of the'press with the rest of the described mechanism, but when the press is also provided with'the belt-shifter we prefer to use but one trap, and in that event the latter and the handle (see dotted lines, Fig. 4) are located at the same side of the press as the driving-belt and pulleys; but, however,`

two separate traps maybe employed, and the belt-shifterwill be described in connection with n. second trap, it only being necessary in -that event to employ branch wires. By thev term trap we mean to include any suitable device or mechanism which will exert a decided pull or jerk on the part to which closing of the electric circuit.

The belt-shifter is shown in Figs. and 7. II designates a fast pulley, and H' a loose pulley, both mounted on a common shaft h, fromwhich power is transmitted to the press. The driving-belt is iudicatedby h'. "o that yside of the press adjoining the pulleys Il and II' is secured a tube or cylinder h2 open at its outer end and having a longitudinal slot h3 therein. WVithin this tube' fits a rod 7a4-and a coil-spring h5, the tension of the latter serving to force said rod outward. From this rod project two" parallel arms i, designed to receive the driving-belt between them, said the spring-pressedirod is held inward, the driving-belt is onf the fast pulley. Thesaid rod is so held by a locking-lever I, fulcrumed at i on tube h2,and having its angular rounded end 'i2 engaging a hole 723 in said rod. When this locking-lever is disengaged, the rod is forced outwardby its spring, causing the the paper lbeing connected whenl operated by the complete arms extending out through the slot h3. When arms lto shift the driving-belt to the loose pulley H. .This operation of the locking-lever is effected by the operation of the trap instantly the electric lcircuit is closed under any of the conditions hereiubefore specified. Thetrap may be the saine as that before described, but We have shown a counterpart J thereof, the spring-pressed rod j of which is connected by a chainj to the locking-lever I. Inshifting the driving-belt to the fastpulley the operator forces the rod inward, as against the action of its spring, and said rod is locked by the lever I and. so held until the trap effects the disengagement thereof. This trap has the same electrical connection as that before described. When but one trap is used, the chain for effecting the shifting of the cyl'- inder is connected to rod j at any suitable point, and the trap is located on the same side of the machine as the belt-shifter. v

The advantages of our invention are apparent. It will be seen that by means thereof we successfully throw the machine out of operation in the event of any break or interruption in the feed-supply, and thus prevent any imprint being made on the impression' cylinder when the paperis not properly positioned thereon.

It will be understood that we do not restrict ourselves to the employment of the4 mechanism herein described and that changes may be made, without departing from the scope of our invention. While it is preferable to conjunctively shifting the cylinder and driving-belt, yet either may be used without the other.

Bytheterrn "deed-supply we mean the paper fed or to be fed to the press-cylinders, either separate sheets from` a stack thereof or a continuous sheet from a web or roll.

.We claim as our invention- 1. In -a printing-press having a cylinder provided with eccentric bearings, an electric circuit, a circuit-closing device lying in the pathof the paper to befed and, designed to be held lopen by the passage of the paper, a second circuit-closing devicev designed to be intermittently opened and closed,the arrangement being such that if the paper is properly fed the first circuit-closer-will he open when the second is closed, and connections between said circuit and said said cylinder, as and for the purpose set forth.

2. In va printing-press having a cylinder provided with eccentric bearings and a beltshifter comprising a spring-impelled rod engaging the belt, an electric circuit, a circuitclosing device lying in the path of the paper to be fed and designed t be held open by the passage of the paper, a second circuit-closing device designed to be intermittently opened and closed, the arrangement being suchthat if the paper is properly' fed the first circuitcloser will be open =when the second is closed, 'and connections-between said circuit and said eccentric bearings and saidbelt-shifter, substantially as set forth.

employ the means forl IIO eccentric bearings of.

- at another point in 4 tric bearings,

3. In a printing-press having a cylinder provided with eccentric bearings, an electric circuit, a circuit-closing device having one of its members lying in the path ef the sheet to be fed and designed to be closed in the event of more than one sheet being fed at a time, a circuit-closin g device at another point in the circuit designed to be intermittently opened and closed, the arrangement being such that if the paper is properlyfed one circuit-closer will be open When the other is closed, and connections'between said circuit and said eccentric bearings, substantially as set forth.

4. In a printing-press having a belt-shifter comprising a spring-impelled rod engaging the belt`, an electric circuit, a circuit-closing device having one of its members lying in the path cf the sheet to be fed and designed to be closed in the event of more than one sheet being fed at a time, a circuit-closing device the circuit-designed to be intermittently opened and closed,the arrangement being such that if the paper is properly fed one circuit-closer will .be open when the other is closed, and connections between said circuit and said belt-shifter, substantially as set forth.

5. In a printing-press having a cylinder provided with eccentric bearings, an electric circuit, a circuit-closing device in the path of the paper to be fed and designed to be open during the uniform passage of the paper, a

circuit-closing device' at another point in the v circuit having a movable member, and a shaft operated by said cylinder and designed to effect the movement of said member, and 'connections between said circuit and said eccensubstantially as set forth.

6. In a printing-press having a shiftable impression-cylinder and a disk on the journal thereof, an electric circuit, a circuit-closing device at one point in the circuit in the path of the paper to be fed and designed to be held open during the uniform passage of the paper, a circuit-.closing device at another point in the circuit designed to be intermittently opened and closed, said latter circuit-closing device having a movable member, a periodically-operated rock-shaft to which said movable member is connected, said shaft being operated by said disk, and means for shifting said cylinder controlled by said circuit, substantially as set forth.

7. In a feeding apparatus for printing-maf chines, an electric circuit, a circuit-closing device at one point in the circuit lying in the path of the sheet to be fed and designed to be v held open by the passage of the sheet, a circuit-closing device at another point in the circuit designed to be intermittently .opened and closed, one of said circuit-closing devices having a movable member, a periodically-operated rock-shaft to which said movable member is connected, a shiftable impression-cylinder, a disk on the journal of said cylinder for operating said rock shaft, and means for shifting said cylinder controlled by said circuit, as set forth.

8. A printing-press having a shiftable impression-cylinder, a disk carried by said cylinder having a shoulder, means for shifting said cylinder, an electric circuit connected to said means and having contact-points and a switch provided with a movable arm, and an arm engaging said disk and by which said switch-arm is carried, whereby said latter arm is caused to close said circuit simultaneous with the contact of said contact-points in the event of any break or interruption in the feed-supply, as set forth. l v 9. The combination with a printing-press having fast and loose pulleys, comprising a tube or cylinder having a slot,

a spring-pressed rod in said tube or cylinder having lateral arms extending through said slot, a locking-lever fulcrumed on said tube and designed to hold said rod retracted, a

trap connected to said locking-lever, and anelectric circuit connected to said trap, said circuit having two contact-points which close said circuit in the event of anybreak or interruption inthe feed-supply, substantially as set forth.

In testimony whereof we have signed this specification in the presence of two subscribing witnesses.

ALFRED F. HARRIS. CHARLES G. HARRIS. WILLIAM 1I. SMILEY.

Witnesses:

GEO. W. UPToN, CHAs. E. NEIss.

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