US1899089A - Folding machine - Google Patents

Description

a if P. R. GLASS FOLDING MACHINE Feb. 28, 1933 Original Filed Sept. 28 1928 Cit Patented Feb; 28, 1933 UNITED STATES PERLEY R. GLASS, or SALEM, MASSACHUSETTS, ass enoa ro UNITED snon MACHINERY oonronarron, or PATERSON. new messy, A coaroanrron or. NEW

JERSEY Original application filed September 28, 1928, Serial No. 309,020. Divided and, this application filed February 9, 1932.

This invention relatesto folding machines and is herein illustrated as embodied in a machine for folding the margins of the covers of cases in which books are bound, the'present application being a division of application Serial No. 309,020, filed September 28, 1928.

In the manufacture of such cases it iscustomary to cement two boards to a cover of flexible material, such as leather 'or cloth, with the margins of the cover projecting beyond the edges of the boards, and then to fold these projecting margins over upon the adjacent margins of the boards to form the case. The corners of the cases may be round or 7 square, andthe manner in which the parts of a caseare cut andfoldeddifl'ers according to whether round corners or square corners are desired. Such cases, when finished, have four straight edges. and four round corners;'and two types of machines for folding such cases have been proposed. In one type the four straight edges and the four round corners are folded at a single operation. In the other type the straight edges are presented one at a time to a straight edge folding mechanism andthe round corners are presented similarly to a round corner folding mechanism, the present invention being illustrated as embodied in a machine of the latter type.

The straight edge folding mechanism. of machines of this type commonly comprises a work support and an edge guide so arranged that when the work is placed upon the support the margin of the cover is bent upright about the edge of the adjacent board. After the work has been so placed, a reciprocating folder moves over the support to fold the margin of the coverover upon the margin of the board, and then the work support is raised to press the fold against the'under side of the folder. I

According to one feature of the. present invention there is provided a pivoted folder adapted to be swung about its pivotal axis by an actuator to which it is connected by link mechanism. In the illustrated mach-inothe folder is a normally upright flatbar, and the actuator isea reciprocatingplate which swings the folder into a horizontal position and moves over the folder so as to form a firm FOLDING MACHINE 1 Seria1:No.5 91,871. I

work support is raised to press the fold 'against' the under side of the folder. Such a construction, While adapted for all sizesof work, is particularly advantageous when backing. uppq for the foldtrwhenthe large book cases having long tops, bottoms ant 'sidesare being operated u on The swinging folder bar folds the margin of the cover evenly over the board, the actuator combinations of parts will'be described as em- I bodied in an illustrativeinachineand pointed out the appended claims. j

Referring now to the accompanying draw- T ig. 1 is a perspective of a portion of amachine in which the present invention isem- 4 Fig. 2 is a perspective showing the mount-' ing of the straight-edge folder; and

Figs. 3 and 4 are details principally section showing the swing-i er in two positions.

Before describing what is new, a brief. description of what is old willbe given. The

g straight-edge fold machine, a's'has been explained, is" designedv to fold the margins of covers of cases for books over the edges of the'boards thereof and. comprises straight edge folding mechanism and roundcorner folding mechanism.

The work, which is the unfolded case of a. book, commonly comprises tWo boards, each of which. has two rounded corners. The cover is of flexible sheet material such as leather, imitation leather or cloth. I The boards maybe of a thick and stiff material such as cardboard or of a thin and comparatively flexible materialsuch as paper. The work, as it comes to the machine, consists of the boards beyond the edges of which the margin of the cover projects; and two alterative methods of folding such a piece ,of workare commonly employed. Eitherthe four straight edges. are folded first up to aoints .ad'acent to the round corners and the round corners are folded first and then the straight edges. Either method may be,

manner that the edge guide and the normally: upright folder bend up the margin of the cover substantially atri ht angles to thesur face of the support; and, when power is applied to the machine, the folder'folds'the upstanding marginover upon the. board or I boards up to points adjacent totwo of-the rounded .corners of the boards; The folder 25 of theTillust-rated machine isnew"; and

inasmuch as the purpose of the presentintroduc'tory description is principally to point outwhat is old, it will be suflicient at this time to explain with respect tothis folder 5 that it is a pivoted plate which swings'from the position shown in Fig. 3 to that shown in Fig. 4 to fold the upstanding margin" of the cover 200 over upon the board 100. \Vhen this has been done, the support 21 is raised to press the fold against the under face of the :folder. The table or support 21 is mounted upon a vertically reciprocable cross head, not

shown, which is raised at the propertime to press the fold( .The parts of the machine normally occupythe positions shown in Figs. 1' and 3 with the folder 25 upright and the support 21 in lowered'position- The work is placed-upon the support, as shown in 3', and then power is applied to the machine ,o whereupon the folder swings over into the i '4 7 position shown in Fig. 4, the support rises to press the fold,-aind then the'parts return to the positions shown in Fig. the presentatlon of'a second piece of work. a

0 ready. for

The round corner folding mechanism will be very briefly described, reference being made to: application Serial No. 309,020 referred to above, in which it is disclosedin detail-and claimed. This mechanismscomprises a generally triangular work support 37 havingarounded nose. The corner of the book case isplacedupon this support'with themargin of the cover extending overan edge guide 4l which fits'about two sides and the rounded end of the triangular work sup port 37. There is then brought down upon the work'a forming plate 43 and a forming block 51. The work support and the work upon it are thuspressed downa short dis tance whereby the margin of the cover is bent up into' the horizontal path of movemerit of a ,folder47 which has a. generally V-shaped forward edge provided with a iourvedj recess where would otherwise be the l sharp apex ofthe V. The forming plate 43 and the forming block 51'are moved forward other being idle at the time.

a about the forming block and, during the second part of its movement, folds this margin overthe forming plate 43, the forming block being pushed ahead by the folder.- .The forming plate 43 is withdrawn from beneath the folded over margin of the cover, and the work support 37 is pushedup to press-the rem against the under face of the folder.

The parts a of the round-corner folding mechanism then return to their normal posltlons 'ofrest ready to permit the unfolded "corner of another book case to-be presented tosaid mechanism. The folder 47 is, fast to'a folder. carrier (not shown) to which is also fast afplate 125 which reciprocates "with the.

"folder.

No further description of theround corner folding mechanism or of the mechanism forv operating the round corner folding mechanism and the work support 21 will be'given, reference being made to the parent application 'or to U. S. Letters Patent No.-1,776,390, grantedscptember 23, 1930, upon an appli-. cation filed in the names of Pe'rley R. Glass and JamesE. McIntire. With regard tothe. patent it may be noted that in the machine there vshown the plate, which bears thenumeral 65 iniFig. 2 of the patent andcorresponds to the plate 125 of the present application, is itself the reciprocating folder ofthe straight-edge folding mechanism, whereas, in the present machine, as will appear below, the plate 125 serves to actuate the swinging plate.

folding mechanism .of the present machine.

,Itw'ill be understood-that in the present machine, as inthe machine of the parent appli- {cation and the machine of the patent, the two folding mechanisms, the round corner and the straight edge, are ope-rated 'simultaneously 1 fence 'foreach cycle of the machine, but that work is being folded in any given cycle by onlyone of the two folding mechanisms, the

Turning now to thenew features, the swinginn; plate 25, which isthe folder, is provided with two portions 228, 230'which project from the face ofthe plate and are the effective portions of' the folder. It will be understood that the particular foldershown is adapted to and bottom edges being considerably longer thanthe side edges. In'the operation of the machine, the straight edges along the sides of the case are presented to the shorter eifectitveportionf 2280f the folder and the straight edges along the top and bottom of the case:

held stationary in "bores formed in-station- 'ary lugs 130, 131 by set screws, one of said screws being shown at 133 in Fig. 2. These lugs are rigidly connected by a bar 139, the forward edge of which forms the edge guide 23 for the work. The swinging folder has fast-to its ends arms 135, 137, the hubs of which are provided with bores to receive respectively the pins 128, 129. InFig. 2, the arm 135 with one end of the folder 25 and the stationary lug with part of the bar 139 are shown in spaced relation. In order to assemble theparts, the set screw 133 is loosened and the pin 128 pulled to'the left, as shown; then the hub of the arm is placed. at the right of the lug 130, the pin 128 is pushed to the right so as to extend into the bore in the hub of the arm 135, and the set screw 133 tightened once more.

In order to actuate the folder 25, the arms 135, 137, to which it is fast, are swung about the common axis of the pivots 128, 129; and this swinging movement is imparted to the arms by the reciprocation of the actuator plate 125 which hasbeendescribed above. Fast to opposite margins of the plate 125 are brack ets 141, 143 to which links 145, 11-7 are pivoted respectively at 1&9, 151. The forward ends of these links 145, 147 are pivoted respectively at 153, to' the rear endof'purved links 157, 159, the forward end of the curved link 157 being pivoted at. 161 to the outer end of the'arm 135, and the forward end of the curved link 159 being pivoted at 163to the outer end of the arm 137. lVith this construction it will be clear that,when the plate 125 is moved forward (toward the left as viewed in Figs. 3 and a) from the position shown in F 3 to the position shown in Fig. 4, the folder 25 will be swung from its'normal vertical position into the horizontal position shown in Fig. 4 and in this movement will fold the upstanding margin of the straight edge of the cover 200 (Fig. 3) down upon the board 100 (Fig. 4:).

Inasmuch as the difierent pieces of work which are of substantially the same thickness may vary somewhat in that dimension, it is desirable to provide means for permitting the folder actuating mechanism to yield when occasion arises. To this end the levers 14:5. 1&7 are mounted for yielding movement. Referring to Figs. 3 and 4, the right-hand end of the lever 145 is received between a stop screw 165 and a spring-pressed plunger 167 both of which are mounted in extensions which are part of the bracket 1611. Referring to Fig. 1, the right-hand end of the lever M7 is received between a stop screw 169 and a spring-pressed plunger like the springpressed plunger 167. The two levers 1 15,

147, mounted in this manner, are thusfca pag ble of being swung slightly-in a' 'cl ockwise di rection (Figs. 3and'4) about their pivots in opposition to the action of tlie-sbring'pressed 4 plungers, if a articularlylthick piece of work being'operated upon.

It should be particularly notedthat, when the plate 125 has been moved into the position shown'in Fig. 4:, the forward portion of the plate rests upon theupper surface of the swinging-folder. 25 and serves as a'firm backmg for the folder against the upward thrust of the table 21, when that tableis moved .up ,to press the folder. lt should'also be noted that the axis about which the folder 25 swings, (Fig-I 3) coincides substantially Witn the upper corner of the'edgegage23.

work shall be; evenly folded and the'fold-uniforinlylpressed irrespective of slight diflen. encesin thickness which may bepresent in r In order to ensure that the marginal the the worlnthe work support 211mm recess a to receive a plate 17 (Fig! 1) of spring metal, theoperative' portion of said plate comprising a plurality of tongues as shown;

and beneath this plate is a rubber pad 175.

Assumingthatf a folder 25, having'p'oh tions and 230 of the proper lengths for i "the book cases which are to be folded,"-has been mounted'in the machine, the operation of the machine isas follows upon the work supportin'proper relation" to the portion-228 of the folder, and themathe marginof the cover of the casealong this straight edge upto points spaced somewhat from the two corners at that side of the case.

This operation is then repeated on the other side edge, Next the two ended'ges are folded one after the-other, making'use of the por 'tion 230 of the folder. The sides of the cover.

of the book casehavenow been-folded: ex-

cept "for small portions-onboth sides of the four corners of the case, and theicorners of four separate operations, making use round corner folchng'mechamsm;

Althoughthe invention has been set'forth of the one of the side edges of the case isp-l-aced as embodied in a particular machine, it

should be understood that the invention is not limited in the scope of its application to the particular machine which has been shown and described.

' Having thus described my in'vei'itiomwhat I claim as new and desire to'secure by-Leb ters Patent of the United States is:

1. A machine ofthe class described hav- 7';

ing, in combination a work support, a pivot? ed folder plate, an actuator for the folder 7 7 plate, mechanism including a link ffoncon necting the actuatorwitlithe folder plate,

and means for operating the actuator.

chine is caused to operate, thereby folding i i the actuator with the folder plate, and means 2A machine of; the class described-having, in combination, a work supportya pivoted, folder plate, an actuator for the'folder plate, yielding mechanism including a link jfo'r connectingthe actuator with the folder plate, and means for operating the actuator. 1 1 3. A machine of the class described-having,

' in -combination, a work support, a pivoted folder plate, an actuatorforthe folder plate,

mechanism including a link for connecting for reciprocating the actuator.

, the f l ler, connections between the actuator oted f lder 1111' 4:. A machine of the class described ha"- ing, incon1bination,-.aworksupport, a pivhe form of an elongated plate,

11 the folder, an actuator for arms rigid vW1 andthe: arms, and means for operating the actuator. o

ing, in combinatioma work support, a piv- I ing, in-combination, a work support, an edgeguide tofacilitate bendlng the margin of'the' oted folder lnthe form of an elongated plate,

arms--rigid w ththe folder,an actuatorfor the fo1der,-connect ons between theactuator and the arms, and means for reciprocating theactuat'or, a 7 -T 6, A' machine of the class 'descrlbedhavwork upward, a pivoted, folder, an actuator for the folder, mechanism connecting the actuator .with the. folder whereby movement of the actuator swings the folder about its'pivot, means for -ator to cause the folder to bend the upstanding margin of the work over upon the body' portion of the work to moving the actuform the fold and to cause a portion of the actuatortobe positioned above ing the work support to press the foldagainst rocating the actuator. I b V 10. A machine of the class described haverate upon coverof a'case for a book and another upon 5. A machine of the class described hav- I the folder, and means for raisplate, an actuator for the folder plate, yieldlng mechanism for connecting the actuator with the folder vplate, and means for reciping, in combination, a work support. aswinging folderv provided with a plurality, of spaced effective portions, one adapted to 013- the top and bottom margin of the the side margins, and means for swinging the folder over upon the work. a 11. A: machine of the cl'ssdescribed hav- 11 1g, in combination,

er provided Wltll! spaced effective portions 2 in the path of movement of a selected one of which a selected portion of the cover of a book case may bepresented, and means for actu atmg said folder to fold the margin along oneedge 'oftliecase from a point adjacent to one corner of the caseto a point ad accnt to another corner, leaving the corner portions unfolded. t

12. ih'HlZLClIl-IIG of the occlass described having,lin combination, a work support, a pivotedfolder provided with spaced effective portions in the path .ofmovement of a selected one of which selected portion of the cover ofea book case may be presented, and

means for-swinging said folder to fold the margin along one edge of the case from a point adlaee'nt .tojonecorner of the case to a'pomt adjacent-to another corner, leaving the corner portions unfolded. 7 t

. In testimonylwhereof Ihave signed my name to this specification. V v 7 f i' PERLEY R. "GLASS.

.theunder'facefof, the folderwhil'e the folder I gislbacked'up, as described', by the actuator, V V

A machine of the class described hav- .ing, in, combination,

, the folder about its pivot, and means for mov- V ing the actuator upon the work and to causethe actuator to contact :with that faceof the folder oppo- Work. I i

, s. M cha ism for folding the want of to swing the folder over 7 site the one wh chis in contact with the I I the cover-of a book case over'the straight V '7 edges of the boards thereof having, in combination, a worksupport,a pivoted folder" an actuator for the folder plate, mech- 7 plate, anlsm includ ng itllnk for connecting the actuator with the folder plate, and means :forreciprocating the actuator} r 9 Mechan sm for folding the :margins I the cover of a bookcase over the straight edges of the boards thereof having, in com- 7 e niav rkSup o tari etedf ef a a work support, a fold: I Y

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