US1377305A - Seaming apparatus - Google Patents

Description

J. w. BROWN AND w. HESS.

SEAMING APPARATUS. APPLICATION FILED SEPT, 26, 1919.

Patented May 10, 1921.

3 SHEETSSHEET 1- J. W. BROWN AND W. HESS.

SEAMl-NG APPARATUS. APPLICATION FILED SEPT. 26. I919. 1, 3??) 305 Patented May 10, 1921.

3 SHEETS-SHEET 2.

I mvemcom; y?

I 11mm J. W. BROWN AND W. HESS.

S EAMING APPARATUS. APPLICATION FILED SEPT. 26, 1919;

Patented May10,1921.

3 SHEETS-SHEET 3 fitter 1112,1

, zronN w. ROWN AND nssize-Nons, EY

wrrtinia nnss, or PHILADELPHIA, EENNSYLVANIA, DIRECT AND MESNE ASSIGNMENTS, T0 BENJAMIN r. 03-.

VDYKE, INQ, or PHILADELPHIA, PENNSYLVANIA, A CORPORATION or DELAWARE.

T 0 all whom it may concern:

Be 1t known that we,JoHN W. BROWN and W'ILLIAM HEss, citlzens of the United States,

residing at Philadelphia, in thecounty of Philadelphia. and State of Pennsylvania, haveinvented certain new and useful Improvements in Seaming Apparatus; and we do hereby declare the followingtolbe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the.

seaming machines, and more particularly to suchas are adapted for producing lock-joint seams in sheet metal. 7 v

The object in view is the reduction in the number and complexity of parts and 'increase in eflieiency of machines of this type.

With this and further objects inview as will in part hereinafter become apparent and in part be stated, the invention comprises certain novel constructions, combinations and arrangements of parts as subsequently specified and claimed.

In the accompanying drawings Figure lis a View in side elevation of an apparitus embodying the features of the present invention, parts of the frame being broken away.

Fig. 2 1s a horlzontal section therethrough taken on the plane indicated by line 2-2 of Fig. l.

Fig. is a vertical section taken approximately on the planes indicated by line 3-3 of Fiig. 1, parts being seen in elevation, and the parts being in the position assumed at the beginning .of an operation. v Fig. l is a similar view of the same parts in the position assumed in'the course of the tucking. operation.

Fig. 5 is an enlarged, fragmentary elevation of the folder head and connected parts. Fig. 61 is transverse section taken on the piano indicated by line 66 ofFig. 5, the parts being in the initial position as, seen in Fig. 5.

Fig. 7

This invention relates to improvements in is a similar section taken on the SEAM-ING nr rnna'rus.

Specification of Letters Patent. Patented lwity 10, 19 21; (Application filed September 26,1919. Serial No. 326,511. r

' planeindicated. by line 7-7 of Fig.- 5, the

completing the cycle of operation just prior to return to the initial position.

Fig. 9 is a fragmentary, end v ew with the anvilplunger actu ating elements shown in the position corresponding with that of the parts in Fig. 8.

F ig. 10 is a detail, end view of the right-, hand tucker detached, one of the lifting rods therefor beingseen in fragmentary side elevation.

' Fig. 11 is a fragmentary section taken on the plane indicated by line ll1l of Fig. 10.

' Fig. 12 is an enlarged, detaihfragmentary section showing the parts in the second step of the operation or that immediately following the introduction of the sheets of metal which occurs while the parts are in the position seen in Fig. 3.

Fig. 13 is a similar view of the same parts in-the position of the next step of the operationi 7 Fig. 14: is a similar view of the same parts in the position of the fifth step of the operation, the fourth step not being shown and consisting of the withdrawal of the folder head to the position seen in Fig. 14Ev before the advance of the tuckers.

Fig. 15 is a similar viewof the same parts in the position of the seventh or final step of the operation, the sixth step not being illustrated'and consisting of thewitl di'awal of the tuckers before'the final descent of the folder head andthe final blow of the hammer plunger. I I

Referring tothe drawings by numerals, 1 indicates a bed or table sustained bylegs or other suitable supporting means 2,2. EX- tending longitudinally of and through the table '1 is a slot 3 in which plays the anvil plunger or former 4:, which consists of a flat plate arranged to move edgewise within slot 3 and having its lower edge resting upon a longitudinally extending cam 5. The came is j'ournaled in the end portionsof the table 1 and to an'eXtension of one of the journals is fixed a rocking lever 6 engaged near one end byan operating spring 7 and near the other by an actuating link 8. The link 8' pivotally engages lever 6 and extends on an incline upwardly therefrom and is pivotally connected with an elbow or bell crank lever 9, which-is pivoted'at10'to one of the'up- I standing side frames 11 of the machine. The sa d slde frames 11 are preferably connected across the top of the machine by-a longitudinally arranged arched plate 12 for affording stability and rigidity, of the parts. Jour-- I naled in the side frames 11 is a main drive shaft 13 toone end'portion of which is fixed an actuating cam la whosecam surface engages a roller journaled in the upper end portion of lever 9, so that as the cam14 re 'v'olves the lever 9 will at times permit the spring 7 to oscillate'the cam shaft 5 in one :direction'so that the cam surface thereof acts tothrust the anvil plunger 1 upward to the position seen in Figs. 12 and13, where Y the plungerwill rest and resist downwarc movement of itself not by virtue of the 'pressure of spring 7 but because thethrust on the plunger is delivered toward the-axis of' the cam which remains statlonary dur ng such thrust and 1s sustained against lateral bodily movement both by its journals in the endvportions of the table'l and by appro- 'priate intermediate supports 16," 16. The

earn 5 is given a contour for effecting the requisite thrust of plungerd and permitting 1ts "retraction, and the cam 14 1s timed to a permit the thrust by the action of'spring 7 and to allow the retraction by the downward movement of roller 15 and the resultant osclllatlon of cam shaft 5 in the opposite directlon from the action of spring 7, whereby I the cam assumes a position permitting the its lowermost position. i a i 11111116 with and above the anvil plunger 1 is arranged the hammer plunger 17 which is plunger 4: to descend by its own weight to carriedby a folder head 18resiliently sus tained and stressed upwardly by vertical supporting rods 19, 19 extending through eyes '20, 20 projecting laterally from head.

18, the said rods 19 extending upward from said eyes andpassing through lateral eyes I 21, 21, outstzinchngfrom theplate 12. Nuts orIheads'22," 22 are arranged at or near the upper ends of rods 19, spaced above the eyes 21, and each rod is surrounded by a coiled formed with a corresponding head or nut 24 beneath the respectivefeye'20, so thatthe folder: head 18'is resiliently sustained on the springs 23. 1 Upstandingfrom the folder head, 18 are brackets 25 in which are journaled rollers 26, each arranged to travel on a very short folder head a single cam 27 will be foundfadequate. The cams 27 are fixed to the drive-shaft 13 and are of such peripheral contour as to effect the requisite downward thrusts of the folderhead 18 in timedrelation to the other parts hereinafter v stated;

The folder head 18 is formed with a longitudinally downwardly opening slot or deep groovel28 and from the lower edge of the folder head 18 depends a pair of spaced folder lips 29, each consisting of a longitu dinally arranged plate detachably fixed within and-extending along the slot 28. The plates 29 maybe fixed'to the head 18 in various ways, as by being bolted thereto by screws 30, or may be otherwise appropriately fixed to the head. The plates 29 are preferably beveled at their outer portions but their inner walls are straight and parallel andtheir upper edges form offsets or v shoulders within the slot 28 and the ham- 'mer plunger 17 consists of a longitudinallyarranged plate snugly fitting and slidingly mounted between the faces of the plates 29,

the upper portion of the plunger being formed into a T-head 31 overhanging the shoulders formed by the upper edges of plates 29 so that the plunger 17 is free toplay up and down within the slot 28 for so much thereof as is represented by the distance from the upperedges of plates 29' to the-upper terminus of the slot. The head 18'is formed at spaced points with vertical bores or apertures 32', 32 in each of which is arranged a spring 33 whose upper end portion is confined by a detachable cap 34: threaded into the upper end of the respec- 33 rests upon the T-head 31 of plunger 17 and each spring is tensioned to press the head constantly downward. It will thus be seen that the hammer plunger 17 is capable of being retracted when sufiieient force is exerted on its lower end and the movement of the plunger 17 upward may continue until the T-head 31 strikes the upper terminus of slot 28, but at times, as will hereinafter appear, it is desirable to lock plunger 17 against retraction to that extent and to hold tive bore 32. The lower end of each spring it against further retraction than is indi-V cated in F 1g; 7. To thls end, laterally acting plungers 35, 35' are arranged to play into andout of the path of movement of the head 31 from opposite sides of the folder head18. To enable this action of the plungers35fthe head 18 is formed with lateral apertures 36 communicating with the upper portion of the slot 28, there being preferably three apertures 36 at one side of the apertures 36 at one side being spaced equ1- distant apart along the head 18 and the.

apertures 36 at the other side being equally spaced between the transverse planes of the head 18 occupied by the first-mentioned three apertures 36." Obviously, any other number of apertures and coiiperating parts may be utilized when preferred. A. bracket 37 outstands from and isdetachably fixed to the folder head 18 for each aperture 36 and extends across the aperture. Fixed to each plunger 35 and outstanding therefrom is a guiding and operating rod 38 which extends through an appropriate aperture in the respective bracket 37 and is guided thereby. Beyond the bracket 37 each rod 38 is surrounded by a spring 39 confined between the respective bracket 37 and a pin 40 at the outer end of the rod 38, so that the respective spring 39 is tensioned to press the rod 38 outward and thus tend constantly to withdraw the respective plunger 35 from within the path of travel of the head 31. By preference, the head 31 is slightly notched out'at 41, and the head 18' is corre spondingly notched out at 42 for each plunger 35 so that the plunger 35 in each instance may be slightly thicker than the distance represented by the space between the upper surface of the head 31 and the upper'terminus of slot 28 when the head 31 is in contact with the plunger 35. The springs 39 retain plungers 35 in their outermost position, that is, the position indicated in Fig. 3, so that the hammer plunger 17 is not interrupted in its upward movement except when the plungers 35 are pressed inwardly by the contact of inwardly moving brackets 43, 43 carried by tuckers 44 hereinafter described.

During the course of operation, as will hereinafter b pointed out, the hammer plunger delivers to the seam being formed a finishing pressure or blow, and to this end the plunger 17 must be pressed downwardly with irresistible force so far as the material being operated upon is concerned. To effect this operation, the drive shaft 13 is provided with eccentrics and eccentric straps 45, 45, preferably three in numberappropriately spaced apart along the shaft. Obviously a different number of eccentrics may be utilized. To each eccentric strap is connected a pitman or plunger rod 46, which projects downward through a boreor aperture 47 in the head 18, each rod 46 being guided by the walls of the aperture and the guide thus formed being elongated by the provision of sleeve-like bosses 48 surrounding the respective rods 46 and upstanding from the head 18. Each boss 48 is preferably form'ed' integral with the head 18, but

may be otherwise constructed when desired.

Each rod 46 is of a length and each actuating eccentriotherefor has a throw sufficient for causing 'the rod to press the hammer. plungerl't' down to the position indicated in Fig. 15, this operation being timed by the locati'on of the eccentrics to occur'atthe appropriate moment toward the conclusion of a cycle of operation as will be hereinafter stated.

The-tuckers 44 are arranged at the opposite. sides of the path of movement of anvil plunger 4, and each consists of .a'fiat plate extending along the table 1 fora distance "equal'substantially to the length of the head 18, that edge of each plate nearer the plunger 4 being beveled at 49 to provide a rounded entering edge. Upstanding from each of the plates comprising the respective tuckers 44 are eyes 50 to which are pivoted links 51 extending outwardly to and pivotally connected with operating levers 52. Each of the links 51 is preferably provided with a turn-buckle intermediate its ends for facilitating adjustment for controlling the exact distance of shifting of the tuckers'in their tucking operations. The number of links 51 and operating levers 52 maybe varied as found desirable, but by preference in a machine of the'size'illustrated in the accompanying drawings there are two links and levers for each tucker 44, one pair of levers being arranged at one sidelof the machin and the'other pair at the other side. The levers of one pair are fulcrumed ona shaft 53 and the other pair fulcrumed on a similar-shaft 54, the shafts 53 and 54 ex-v tending for the length of the machine and i being rigidly connected to the side frame itsrespective fulcrum shaft and engages an operating cam carried and actuated by the drive shaft 13'. These cams by preference consist of grooves or cam paths55'formed in the faces of the cams 27, the campath 55 in one face of one cam 27 being engaged by a lever 52 at on side of the machine and the cam path 55 in the opposite face ofthe same cam 27 being engaged by a lever 52 at the other side of the machine. Each 1ever 52, at its upper end, is provided with a lateral pin or laterally set'roller 56 riding within and actuated by" the respective cam path 55. Thus the tuckers 44 are adapted to be reciprocated across the table '1 toward and away from the path of movement of i sive sheets of metal means are provided for lifting one of the tuckers 44 at the conclusion of a cycle of operation so as to provide 1'35 erable form of anchorage of rods 58 is such as is illustrated in detail in Figs. 3.0 and 11,

a free path of access for the sheet of metal to be introduced. TOBfl GCt this lifting op eration, one of the tuckersi l is engaged by lifting rods 57, 57, one at each end of thetucker. Since the sheets of metal are to be fed in from the righthand. side of the machine as seen in Figs. 3, 4c and 8, the particular tucker 4:4 engaged by rods 57 may be referred to as the righthand tucker. Each rod 57 is confined a ainst ed ewise move ment by a guide consisting'of a pair of laterally' outstanding, beads 58 fixed to and and thus elevate the righthan d tucker 44 at the conclusionoii' each cycle of operation and to allow the said tucker to be owered to rest I upon the newly introduced sheet as the folding lips or folder head 18 descend to the position indicated in Fig. 13.

"rIt is obvious, of. course, that while each rod 57 must be so anchored to the tucker 44 asito cause the tucker to move up and down as described', the mannerof anchorage must besuch as to allow the tucker to be reciprocated by? levers 52. To this end, the pret- "in which rod 57 isshown as provided with a foot 64 having a slot 65; through which projects, an. extenslon 66 from. the tucker 4d,

the foot 64- being accommodated in a notched out portionor, recess 65 in the end of the tucker. Thus the righthand'- tucker a l mav in 5Y0 pulley 68 is also provided to receive the belt bereciprocated for a distance within the limits allowed by the'excess length of slot 65'beyond the width of extension 66.

Power may be, supplied from any source,

not illustrated, as, for example, by abeltnot shown engaging the fixed pulley 67 mount- I edonithe drive shaft 13. The usual loose when the machine is temporarily thrown out of operation.

In'-operation,- the: parts'being in the position indicated in "Fig. 3, a sheet of metal is introduced ac *oss the table 1 beneath the righthand-.tuckcrde, and the lefthand tucker 44 is tilted slightly by hand until the sheet "is slidjbeneath it and lies with its edge p'or tionplast introduced, across the slot 3. A second sheet is then passed beneath the righti hand tucker ll-and placed withits first introduced edge portion overlying-the edge portion of? the former sheet. Thereupon the spring 7, released by the dropping of the roller 15 oil of the greaterradius oi cam 14: oscillates am ant. projectsthe anvil plunger 4 to I rest position fes indicated in Fig. T ms the lapped p ,tions of the sheets brought into contact with the hammer i which presses down upon the under spring pressure and while re- Ii ning thus in engagement with the sheets, olding lips 29 descend to the position cated in Fig 13, the descent of the folder being accompanied by a corsespondiescent the righthand tucker l l. The assume a f at position on thetable & ons of the sheets i int 3 troughdike upstanding angular form in cross section. Cam 1% then depresses the roller 15 and thus oscillates cam 5 back to its initial position, and the anvil plunger 4ldrops to the position indicated in l-ii, and at the same time the folder-head l8 ascends under the action of springs 23, which action is limited by the contour the edge portions 01": cams Q'Zso that the folder lips 29 only ascend to the position indicated in Fig. ll. Thus the just-formed trough-like overlapping portions of the sheets of metal are internally unsupported. approach each other until the tapered edges thereof engage the lower portions 01 the t1ougl1like member and move said portions inward towaru each other, sliding the sheets of metal across thetable in. this inward movement. At or just before the moment of contact of the tapered edges of tuckers at with the folded portions to betucked, the upstanding brackets-d3 will have come in contact with the stems 38 of plungers 35, and

asthe tuclzers move inward the plungers correspondingly move inward so as to inter- .itere with and prevent any upward movement of the hammerplunger 17 beyondthat :seen in Fig. 14-, so that the overlapping portions ofthes'heets of material being tucked may not bow upward or otherwise become distorted or out of the desired shape. The tuclzers continue their movement inward to and past the position seen in Fig. 14L until the adjacent edges of the tucked portions of the sheet .are nearly in contact, the distance apart being taken up subsequently by thocollapsing oi? the metal until the parts Contact in the finished bead. Then the tucle 44 are retracted to the position indicated in Fig; 15, it being observed that as they more outward the plunger-s 35 also move outward and leave the hammer plunger 17 for actuation by. the rods 46. Thereupon the folder head 18 descends so that the lips 29' confine the tucked overlapped portions of the sheets and at the same time the hammer plunger 17 descends with its hammer blow under the action of the rods 46 until the parts assume the position shown in Fig. lo, whereat the seam is complete and so per- Then the tuckers 44 fect as to be both oil and water tight. To

avoid having the'ridge or bead produced in- C1Cl611tt0 the formation of the seam lie all at one face of the completed sheet, provision is made to have a portion of the thickness of such bead appear at the under face and the balance atthe upper face, this being accomplished by the descent of the anvll plunger 1 i; beneath the plane of the upper surface of the table a distance equal to the distance to whichtho thickness of the bead beneath thelinijshed sheet is to appear, while the hammer plunger 17 is proportioned to descend as much nearer to the plane of the table) 1 as is represented by the descent of the head into the slot 3. V i i Thereupon the folder head 18 ascends to the position seen in Fig. 3, and the parts are ready for another cycle of operation.

f The invention herein disclosed appertains tothe same type of machines covered by our co-pending applications, one filed July 10,

1918 Serial No. 244,202, and the otherfiled June 27, 1919, Serial No. 307,150, and this applloatlonmay be considered a continuation of those applications in so far as the subject matter herein disclosed corresponds with that disclosed in said applications.

What is claimed is:

1. In seaming apparatus, the combination of a reciprocally-mounted anvil plunger, a 7

folder having folding lips adapted to extend on opposite sides of the plunger and to fold sheets of material about the plunger to form an inverted, trough-shaped portion of the sheets, tuckers reciprocally mounted for approaching suchtrough-shaped portion laterally, a hammerplunger adapted to collapse the folds ofthe trough-shaped portion after the tucking operation thereon, and means for actuating all of said parts timed to cause the anvil plunger to retract after theforma- 'tion of the trough-shaped portion, the folder to retract, the tuckers to advance and tuck parts of the troughshaped portion under other parts thereof, tuokers to retract, the

folder lipstodescend and'inclose the thus tucked trough-shaped portion and the hammer plunger to deliver a collapsing blow on such trough-shaped portion while thus confined.

2. In seaming apparatus, thecombination of means for forming a trough shaped portion of overlapping parts of sheets of material, means for tucking parts of the troughshaped portion under dther parts thereof,

meansfor collapsing the parts of the troughshaped portion to a tightly folded condition forming a bead, means for supporting the sheets during such collapsing operation spaced between the levels of the collapsing means and that part of the trough-forming means against which the parts of the trough- V shaped portion are collapsed, the parts hemg so proportioned with respect to each partly at one face of the sheets operated p d partly at the other. Y p

3. In seaming apparatus, the COInlOlIlZLtlOIi other as to cause the bead thus formed to have its thickness divided and exposed with a slotted table adapted to support sheets'of material to be operated upon with overlapping portions of g the sheets lying across the slot, an anvilplunger reciprocally mounted inthe slot, means for moving the plunger from a position below the plane of the surface of the table to a posit onwlth its upper portion above said plane, means for forming sheets over the portion of the anvil plunger above the table, means for tucking the thus formed portions of the sheets, and

,means for collapsin'gthe foldedand tucked POltlOllS of the sheets andfor forclng the same into the slot into contact with the retracted anvilplunger.

4. In seaming apparatus, the combination wlth a table havlng a slot, of an anvll alun er reciorocall mounted in the slot means for moving the plunger to a position with a portion of the plunger extending above the table, a reciprocally mounted folder head, said-folder head being formed with a slot in line with the slot of the table,

plates detachably connected to the folder headand forming folder lips spaced apart plun 'er reciprocally mounted in the slot,

means for moving the plunger to a position with a portion of the plunger extending above the table, a reciprocally mounted folder head, said folder head being formed with a slot in line with the slot of the table, plates detachably connected to thefolder head and forming folder lips spaced ap rt in. position for folding sheets over the anvil plunger when the lips are moved past the are ectln portion of the plun er mezms for k; m I h 7 tucking a part of the folded portions of'the sheets to an underhanging position, and means movable within the slot of the folder head for collapsing tucked portions of sheets,

the detachable plates extending into the slot of the folderhead in position for limiting the'movement OfSllCl collapsing means.

6. In seaming apparatus, the combination with a table having a slot, of a reciprocally mounted anvil plunger therein adapted to be .moved to a position with a portionof the plunger extending above the plane of the surface of the table, a folder head movable toward and away. from the anvil plunger i V series of springs mounted in the folder head engaging the hammer plunger andstressing and having lips adapted to shape sheets over the anvil plunger, a hammer plunger reciprocally mounted between the lips and a spring-pressing the hammer the anvil plunger.

7. In seaming apparatus, the combination With a table having aslot', of areciprocally mounted anvil plunger therein adapted to be I ,c j: DIOVQCltO a position with a portion of the plunger extending above the plane of the surface "ofthe table, a folder head movable toward and away from the; anvil plunger and having lips adapted to shape sheets over the anvil plunger, a hammer plunger reciprocally mounted between the lips, and a the same toward the anvil plunger.

8 In seaming apparatus, the combination {with a table having a slot, of a reciprocally I mounted anvilplunger therein adapted to be moved to a position with a portion of the plunger extending above the plane of s theisurface of the table, a folder head mov-- cable 'f toward and away from the anvil I plunger aiidliaving' lips adapted tosliape sheets over the ,anvil' plunger, a hammer, 1 plunger reciprocally mounted between the lips, a series of springs mounted in the i folder head engaging the hammer plunger and stressing the same toward the anvil plunger, and screw caps having threaded en gagement with the folder head, for retaining said springs in position.

9. In seaming apparatus, the combination with a reciprocally mounted anvil plunger,

' a folder head having foldinglips adapted to fold sheets of materialabout the plunger,

means for operating the plunger and effecting withdrawal thereof after the formation of tlie sheets thereover, tucking means for pressing under portions of the formed sheets toward eachother, a hammer plunger reciprocally mounted between the lips of the folder head, and means controlled by the ytuckers for positively limiting the inove- IIIQDt Of the hammerplungerin a direction away'from, the folded sheets during the i tucking operation.

fjtion with a reciprocally mounted anvil 10. In seaming apparatus, the combinapluiiger, a folder head having folding lips adapted to fold sheets'of materialabout the eplungeryineans for operating the" plunger [55 c formation of the sheets thereover, tucking and effecting withdrawal thereof-after the means for pressing under portions of the plunger toward ing means for pressing the locking plunger against the tension of the spring into, the

path oftlie hammer plunger;

11. In seaming apparatus, the combination' with a reciarocall mounted anvil plunger,.a folder head having iolding lips adapted to fold sheets of material about the plunger, means for operating the plunger and effecting withdrawal thereof after the formation of the sheets thereover, laterally movable tuckers arranged at the opposite sides of the path, of movement of the folder head, levers for reciprocating the tuckers, links pivoted to the tuckers and pivoted to the levers for transmitting movement from the former to the latter, and means for collapsing formed and tucked portions of sheets.

12. In seaming apparatus, the combination with a reciprocally mounted anvil plunger, folder head havingfolding lips adapted tovfold sheets of material about the plunger, means for operatingthe plunger and effecting withdrawal thereof after the formation of the sheets thereover, laterally movable tuckei's arranged at the opposite sides of tlie path of movement of the folder head, levers for reciprocating the tuckers,

links pivoted to the t uclrers and pivoted to the levers for transmitting movement from the former to the latter, and means for collapsing formed and tucked portions of sheets, each of the links being adjustable in length.

1&111 seaming apparatus, the combina tion with folding and collapsing means for sheets of material, of a tucker reciprocally mounted icr tucking a portion of a formed heet priorto collapsing thereof, means for eciprocating said tucker toward and away from the point of tucking, rods anchored to .sa d tucker in position for leaving the same freefor such reciprocating movement while engaging the tucker to cause it to move'w'ith the rods laterally of the path of reciprocation of the tucker, means for thus moving the rods, and guides for therods.

14. In seaming apparatus, the combinatioirwith a table, of reciprocally mounted "plungers arranged one at one side and the other at'the other side of the face of the table, means for folding a'sheet of mate- 7 -rial about one of the plungers when projectlng beyond the face of the table toward the other plunger, reciprocating tuckers for tuckiiigportions of tliefolde d parts of the sheet to underlying pOSltlOllS, and means for moving the plungers in timed relation for causing retraction of the first plunger and thevother plungerto crush the folded andtucked sheet upon retraction of the first plunger and tuckers,

pausing 15. In seaming apparatus, the combinaj tion with a table. of reciprocally mounted plungersarranged one at one side and the gers in timed relationfor causing jother'at the other side of the face of the "table, means for folding a sheet of material tion to the operation of the plungerss'uch to effect saidm'oving of the sides or" the folded portion of the sheet between the retraction of the first plunger and the crushing-operation of the second. 1 1 16. In seaming apparatuathe combination" with a table, of reciprocally mounted plungei's alined and arranged one above and onebelow the horizontal plane of the upper surface of the table, means for "folding a sheet of material about the upper portion ofthe lower plunger when projected above one below the horizontalplane of the upper surface of the jt'ahle, means for folding a sheet of material about the upper portion H 605 thelowenplunger when at the extreme the table, reciprocating tuckers for tucking portions of the folded parts of the sheet to unilerlyingpositions, and means for moving the plungers and tuckers in timed relation for causing an upward projection of the lower plunger and a retraction thereof and for sing the upper nlu'nger to crush the folded and tucked sheet upon retraction of j the lower plunger and the tuckers.

17. In seaming apparatus, the combination with atahle', of rec procally mounted plungers ahned and arranged one above and of reciprocation in one direction reciprorat- 7 ing tuckers "for tucking portions of the folded parts of the sheet to underlying positions, I and means for moving the plungers and tu clrers in timed relation for causing the upper plunger to crush the folded sheet upon retraction of the lower plunger and he tuckers. .7

185111 seaming apparatus, the combina tion of reciprocally mount-ed tuckers movable toward andfaway from: each means for forming atrough-like told in a sheet of materialnith the. fold i upward between the tucker's, the fltuchers heing located with respect tothefold'forming means as to cause the tu ng edges '05 the ttuclrers when reciprocated twengage the fold along the lower edges or lines or junctnre thereof with'the main portions of the 1 sheet for moving such edges toward each other and causing portions of the "fold to underhang other portions thereof, and means for collapsing the fold subsequent to the action of the tuchers.

" v19, lnfseaming apparatus, the combination with a supgorting talole, of, an anvil i other,

plunger movable past the horizontal plane of the table, a hammer'plunger in line with the; anvil plunger and movable toward the same, a pair of folders arranged one at each ,side or the hammer plung r a pair of tuclrers arranged laterally outside of the vertical'planes 01" the folders,"and means for actuating the-anvil plunger,-hammer plunfolders and tuckersfor causing the anvil plunger tomove upward'a sheet ofmaterial lying on'the table; followed by a downward movement of portions of the sheet under action of the folders'converse to the movement or the anvil plunger forproducing an inverted 'trough shape er the sheet and a withqdrawalof'the' anvil plunger and folders followed by an'advan'ce of the tuckers for causing the side walls of the trough of the sheet to be inclinedg p'roducing an undercut or overhang to the trough,-and the Wlthdrawal of the tuclrers followed by' a movement of the hammer plunger toward the trough shape of the sheet for oollapsingthe m *5 20. IH SB HI11I1g" apparatus, the comb nation with a supporting table formed with a v longitudinal slot, of an anvil' plunger'movable in the slot and means for reciprocating he same therein to and from a point above the level otthe table and forsus'taining the anvil plunger elevated in "timed relation to the movement of other parts, a reciprocating 'haimnerplunger arranged above and 1n line "with the anvil plunger, a reciprocally mounted folder at each side" 'oi' 'the' hammer plunger, means for reciprocating the folders 'itoi moving the same downward pastthe plane of theupper end of theanvil plunger while the anvil plunger s sustained inits elevated position, whereby a sheet of material placed on the table across the anvil plunger will he first elevated by the anvil '1 lunger and then have portions depressed the folders for forming an inverted ugh, tuckers disposed at opposite sides of theresulting trough and eachihaving an inolined surface presented towardthe trough,

and means for reciprocating the tuokers upon the withdrawal of the folders for press ng the lower edge" portions of the V trough toward each other, and means for o o ectnig a uating the hammer plunger in timed-rele crushin down the trough upon the withdrawalof the tu'ckers. c

211111 seaming apparatus, the combinai n to the movement argue tuolrers' for tion with a tabl'ej irovided with a longitudi nal slot, of a plunger reciprocating in the 7 slot, means'for reciprocating the plunger for sustaining the plunger in -an elevatee position with its upper end above the plane hf the table for elevating a sheetof material lyin on the table, folders reciprocallv mounted to move at opposite sides of the plunger; means-- for reciproc ating' the sustained by, the plunger downward to form an inverted trough, and laterallyacting I withdrawalof the plunger.-

means for pressing the vertical walls of the inverted trough to inclinedposition upon I of'a table adapted to support sheets of ma- ,;22'. In seaming apparatus, the combination with a tableprovided with alongitudinal-slot, of a plunger reciprocating in the slot means for reciprocating the plunger and for sustaining the plunger in an elevated position with its upper end abovethe plane pfthe table for elevatinga sheet of material lying on the table, foldersfireciprocally vmounted wtomove at oppositesides of the plunger,means forreciprocating the folders I for pressing portions of the sheets sustained folders reciprocally mounted to move at I le s terial tojbe joined, an anvil plunger movable relative-to the table, folders movable in by the plunger downward to form an inverted trough, laterally-acting means for pressing the vertical walls of the inverted trough'to inclined position upon withdrawal I t of the plunger, and means for collapsing and flattening the walls of theresul'ting trough. 23; In seaming apparatus, the com-bina-. 'tion' with a tableprovided with a longitudinalslot, of an anvil plunger reciprocating in the slot, means for reciprocating the anvil plunger and for sustaining the same in an elevated position with its upper end above the plane of-the table for elevating portions of a sheet of material lying on the table,

opposite sides of the plunger,.means.for reciprocating the foldersfor'pressing portions of the sheet "sustained by the plunger downward to form an inverted trough, laterally- -acting meansfor pressing the verticalwalls ofthe inverted trough to inclinedposition upon withdrawal ofsthe anvil, plunger, a

hammer plunger" disposed between the folders, and means for reciprocating the hammer plun'ger'intimed relation to the "movement of the anvil plunger for crushing the trough upon the withdrawal of they plunger.

24:. In seaming apparatus,rthe combination of atable for supporting sheets of ma timed relation to the anvil plunger for folding sheets about the plunger, tuckers movable laterally with respectto the folded portions of sheets and in timed relation to the folder andanvil plunger, a hammer plunger movable in timed relation tothe tuckers and anvil plunger, a single power shaft, operating means between the shaft and, the anvil plunger, hammer plunger,

folders and tuckers for operating the same in sequence to form a seam.

25. In seaming apparatus, the combination of a-table for supporting-sheets of material, a formerarranged' above the table,

tuckers disposed at opposite sides of the former, a hammer-plunger supported in the former and movable relative thereto, and means for actuating said former, tuckers and hammer plunger in the sequence of the order named to form a seam.

' 26. In seaming apparatus, the combination terial with overlapping edge portions, an

anvil plunger reciprocally mounted and ar'- ranged to rise through the table beneath the overlapping portions of the sheets, a

former above the table in alinement with the plunger, tuckers arranged laterally of the "former, and a s ngleoperatlng means for actuating all of said partsto operate the same 1n sequence for forming a seam.

'27. In seamingapparatus, the combination of means for forming a trough-like portion liver, its crushing stroke.

28 In seaming apparatus, the combination with a table,:0f reciprocally mounted former I plates movable relative to the table, means cooperating therewith for forming a troughlike portion i i-material to be seamed, an

operatingshaft, and means actuated thereby for operating said former plates and said cooperating means, a hammer plunger reciprocally'mounted between said former plates and a reciprocally mounted rod actuated by said shaft and disposed for intermittently engaging and actuating said hammer plunger for moving the same to a position for crushing the trough-like portion.

' j, 29. In seaming apparatus, the combination with :a table adapted to support sheets of material, means for forming a hollow trough-like fold in material on the table, tuckers'movable laterally toward and away from the trough-like fold for shaping portions thereof to underhang other portions, oneof; said tuckers being movable toward and away'from the table in addition to its movement toward and away from the fold, and means for actuating the tuckers.

' 30. In seaming apparatus, thecombination of, a table adapted to support sheets of material, acam arranged beneath the table, an

anvil plunger restingon the cam and adapt-i ed to be shifted thereby to a position with a portion of the plunger extending above the table, a folder above the table movable relative to the anvil plunger for forming sheets ofmaterial over the projecting portion of the anvil plunger, a hammer plunger adapted to crush the thus-folded material when the anvil plunger is withdrawn,

tuckers arranged to engage the thus-folded material for causing portions thereof to underhang ether portions prior to the crush- In testimony whereof we afiix our signaing operation, a power shaft, a plurality of tures in presence of two Witnesses. V cams actuated thereby, and meansaetuated J OHN W. BROWN.

by the cams for operating the anvil plunger WILLIAM HESS. actuating cam, the folders, the tuckers and Witnesses: V the hammer plunger in timedrelation for HARRY C. BLASE,

- cenipleting a seam. 1 p HORACE C. OBDYKE.

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