US1460544A - Switch attachment for folding machines - Google Patents

Description

July 3, 1923.

L. A; GUTRIDGE ET AL SWITCH ATTACHMENT FOR FOLDING MACHINES Filed Jan. 20, 1921 VII/II 2 Sheets-Sheet 2 Patented July 3, 19235 LOAMMIE A. GUTRIDGE AND ll DIRECT AND IEESNE ASSIGNIEEIJZS. 63F 1.. THIRDS TO G. N. SLONAKEEL, COLUMBUS, DI-I113.

SW'ITCH .EIETAAS'EIBGIEDYE Application filed January T 0 all whom it may concern Be it known that Loimriure it. Guinness and FRANK M. Mosrun, ,itiaens oi the United States, residing at Columbus in the county of Franklin and State of Ohio, have invented certain new and useful Improve merits in Switch Attachments for Folding Machines, of which the following is a specification.

This invention relates to an improved switch attachment for paper folding machines of the type utilized in pi' tablishments tor the purpose of folding: printed sheets into pamphlets or book leaves, the object of the invention being to provide means in conjunction with a machine, whereby in the event of the paper becomin ClOS Fl'GQ or undulv stoo )ed in i to h 9&1 l

lpassageways or paper guides thereo'l, mains will be actuated to automatically stop e driving motor of the machin and to there by discontinue its operation until the clog;- ging materials have been removed from their obstructing; positions.

In the operation of paper told'ng; machines, considerable loss has heretofore been occasioned by the failure of the paper sheetz passing; therethrough to properly conimim and follow the guides of the machine lh-equently, these guides are formed to p ovide narrow restricted openings throuo'h which the paper sheets allowed to and therefore in the event o the tailure o sheet to properly pass through an open of this nature, the latter has become do by the paper disposed k red therein. with the result that following sheets are also prcrentcd from passing through the machine until the clogging sheets have been removed. Groinarily the operator of the machine is ot instantly aware of the stoppage, and is not until after a number of sheets have been passed through the machine that the detect therein is noted. This clogging; of the machine, therefore, results in considerable loss of paper and in the time of the operator which is used in overcoming the diliiculti presented. Inasmuch as this condition is present many times a day, during: the operation of the machine. it is patent that considerable loss from a standpoint of materials and also of time consumed in etecting repairs is present. l

In order to obviate the e diiliculties and others, the 1 it USLU MBUS, OHIO, ASSIGNORS, BY

eurnrnen AND rwo- ETC-R FOLDING HINES.

20, T Serial I10. 438,547.

tion consists in the provision of a switch anism, which is adapted to be positioned in one or mor of the paper guides ot a toldiuc' machine, said switch mechabeing normally out of the path of e? nt of the paper sheets through the uit us, but so positioned that when the guide iacent thereto has become clogged, the collection of paper therein will ellcct the closin or a circuit governed by the switch mechanism, which circuit results in controlling a motor circuit, in which the driving n'iotor ot the machine is located, v-rhereb said motor circuit will be opened to instantly arrest, in a purely automatic the operation of the machine, therethe operator of the clogged ion oil the machine and to permit the is operated.

a further understanding of the invention. reference is to be had to the tollowing; niption and to the accompanyiugr s, in which similar character's oi reference deno like and corresponding p throughout the several views thereot.

.u said drawii is plan view of a portion of e 0% paper folding machine, ti

r2. .nr; more particularly the application o' the pre Fiszjure 2 e liu 's the switch attachment comprissent invention thereto.

is a horizontal sectional view 0 2 of Figure 'l, and.

l a diagrammatic view discloscircuits connected with the switch the accompa j'lllg drawings, the numeral 1 designates the frame of an ordinary conventional form of a paper folding machine. As usual, ins nachine is formed to include a paper guiding structure, which in the pres ent instance consists of apair of vertically disposed folding; rolls between which pa per sheets nay be passed and suitably bent ii any desired Folded order. Also, in the present disclosure the frame 1 is provided with a pair of parallel vertically extending carrying guide rolls 4, which rolls act, to recei e the paper sheets after the lati. s iarts ter have been ejected from the folding rolls 2, and to conduct the paper forwardly through guide strips 5. These guide strips are of the usual nature and are disposed in pairs, the same having certain of their side edges disposed in adjacent relationship, so as to provide a restricted guide opening 6 therebetween. It will also be noted that the strips 5 are located in rearwardly diverging order, whereby the same will be in position to receive the paper discharged from the rolls 4 and to permit said paper to be guided forwardly through the properly positioned opening 6. The paper is then carried on past a guide member 7, and is engaged with vertically disposed rolls 8, which are mounted for rotation on horizontal shafts. These latter rolls serve to engage the paper received therebetween and to conduct the paper laterally to other cont-iguous and adjacent folding mechanism, From the foregoing it will be understood that the paper is initially delivered to the rolls 2 and is folded in any suitable manner by the latter. After passing from the rolls 2, the paper is delivered to the guide rolls 1-, which draws the paper cowardly through the guide opening 6. The diverging strips 5 serve to receive the paper irres 'iectivc of its position of discharge from the rolls 4t, and to direct said paper toward and through the opening 6. From this opening the paper is carried onwardly by the rotating rolls until the same engages with the vertical rollers S, which as above stated convey the paper toward the discharge end of the machine or to adjacent folding members.

It repeatedly happens in the operation of a machine of this character, that the paper passing from the rollers 4 will be caught or wedged into the space defined between the strips 5, and when so caught or wedged the paper clogs and can not pass through the outlet opening 6. Thus, an obstructing sheet of paper between the strips 5 will serve to arrest the onward movement of succeeding sheets. with the result that in a short time the space between the guide strips is completely filled with the clogged sheets, so that the operation of the machine is prevented. This clo ing results in considerable inconvenience in effecting the re moval of the clogging materials, in the complete loss of the sheets so caught, which become wrinkled and torn, in the stopping of the machine and in the loss of time required to effect suitable repairs.

To avoid this condition, the present invention consists in providing a switch attacl ment 9, which is preferably formed from an insulating material and comprises a U shaped body 10, having an inner wall 11 and a spaced outer wall 12. The outer wall. is equipped with a set screw 13, whereby the attachment may be positioned upon one of the strips 5 in the manner shown in Figure 2, and then securely held in such applied position by means of the friction exercised through the medium of the screw 13. The body is also formed to include a resilient contact l-it and a stationary contact 15, both of which being situatedv ad 'acent to the inner wall 11 of the body. Iiowever, the normal resiliency of the contact 14 maintains the latter spaced from the contact 15, so that a circuit connected with these contacts will normally remain open. These contacts are provided with spaced binding members 16, which are normally insulated from each other to prevent short circuiting through the attachment.

Leading from the binding member of the stationary contact is a wire 17, and leading from the binding member of the resilient contact is a companion wire 18. The wire 18 leads to a wire 19, which is situated so as to connect the windings of a rheostat 20 with a magnet 91. from which a return wire extends, the latter being connected as at 2%; with the wire 17. The motor 24 employed for operating the movable parts of the folding machine is conne ted with an incoming lead 2F and from the motor a wire 26 is extended to the movable circuit controlling handle 27 of the starting switch or rheostat. l t will be manifest that by rotating the handle 27 toward the rheostat windin I current will be permitted to enter the motor of the lead 25, and the circuit will be continued through the wire 26 to the handle 27. thron h the wire 19 and the magnet 21, causing the latter to be energized, and from the magnet 21 to the source of current supply by way of the return wire 21. It will of course be appreciated that by virturc of this construction, the position which the handle 27 will assume with relation to the rheostat windings will control the quantities of current passing through the motor 24-. and that by moving the handie 9/? to an extreme position. the motor circuit will be broken altogether.

As s usual in this class of devices. the handle 27 is provided with a ratchet face 98. with which a movable detent oi armature 529 is adapted to engage. The armature cooperates with the magnet 21, so that when the latter is energized. said armature will be revolved. about its pivot .into engagement with the ratchet teeth 28. thereby holding th handle 27 against movement, and preventing the operating spring 30 of said handle from revolving the latter to a circuit opening position. When the circuit through the magnet has been broken, it will be manifest that said armature will respond to the influence of its spring 31, so that the same will be released from engagement with the handle 27. Vhen this release is effected the spring 30 of the handle 27 Will return the latter to a neutral position, thereby opening the circuit. This form of starting switch is common in mechanisms of this character and hence no claim is made on the same by itself, the present invention resith ing in associating the attachment 9 with the starting switch circuits in such manner that the motor 24 will be stopped automatically.

In operation, the handle 27 is rotated. so that the motor circuit will be closed, thereby energizing the motor and effecting the consequent operation of the folding machine, which operation includes the rotation of the rolls 2, 4: and 8. During the operation ot the rolls, paper will be forced between the guide strips 5 without engaging normally the switch attachment. However, in the event that the opening 6 or its equivalent becomes clogged with twisted paper, pressure will be applied to the resilient contact 14 by the crowding of the paper between the strips 5, with the result that the contacts 14 and 15 will be engaged, thereby short circuiting the magnet 21, so that the latter will be de-energized. This results in releasing the engagement between the handle 2? ant the armature or detent 29, thereby causing the handle 27 to be rotated to a neutral position, by the influence of its spring 30, an operation which results in the opening of the motor circuit. Vhen the motor circuit is opened, the motor is thereby stopped causing discontinuance in operation of the tolding machine, thereby notifying the operator of the clogged condition of the machine and also enabling such condition to be eliminated. The strips 5 are readily removable from attachment with the frame 1, and hence access between the same may be read ily reached.

In view of the foregoing description. it will be apparent that the present invention provides a simple and e'thcient attachment for the purpose set forth, and one which may be quickly applied to present standard equipment and which will positively operate to the operation of the folding machine after the latter has become clogged in any manner by the passing of paper therethrough.

While the foregoing description specifically sets forth whatis now believed to be the best mode of applying the principles oi: the invention, yet it should be understood that such descdption does not necessarily measure tle invention except as the latter is defined by the following claims.

Ylhat is claimed is:

l. In paper folding machine, in combination. a guide structure for directing paper through said machine, a switch attachment conn irising inner and outer walls adapted to detachaoly ge therebetween a part of the guide structure, said attachment being positioned so that a circuit therethrough will be closed when paper is clogged vithin said .ide structure, a motor for operating said machine, starting switch for said mot ircuit connections between said erned by said switch attachment, said motor "est current flow nation. a guide structure operable to govern the path oi" paper travel through said machine, a switch cooperative with said guide structure and. positioned sons to be normally out of the path of paper travel through the guide structure, said switch comprising inner and outer walls for detachabl therebetween a part of the g .ucture, stationary and movable conta ts on the inner wall of the switch so that when said guide structure is clogged .uro wil be brought to bear upon one of said contacts to bring them into engaged relation. means arr ed by the outer wall of the t h tor clainpi an the switch to the en ide structure. a motor, and a circuit l'or said motor and switch. whereby upon the engag ing 01" said contact-s current tlow through said motor will be arrested.

tures.

LOAMMIE A. GUTRIDGE. FRANK M. MOSIEB.

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