US1239437A - Hoop-beading machine. - Google Patents

Description

Fl GLADER.

HOOP moms mcmwn APPLICATION FILED JULY 28. 1915- p; Patented ept. 4, 191! 5 SHEETS-SHEET l.

F.- GLADER. HOOP BEADING MACHINE. APPLICATION FILED JULY 23. I915.

192344? I I Patented Sept. 4,1917.

i 5 r V 65 FRANK GLADER,OF CHICAGO, ILLINOIS,

HOOP-READING MACHINE.

Specification of Letters Patent.

Patented Sept. a, I917.

Application filed July 28, 1915. Serial No. 42,319.

To all whom it may concern:

Be it known that I, FRANK GLADER, a citizen of the United States, residing at Chicago, in the county of Cool; and State of Illinois, have invented certain new and useful Improvements in Hoop-Beading Machines, of which the following is a specification.

This invention relates in general to machines for producing a curled rib or bead upon the edge of a metal strip and the em bodiment of the invention disclosed herein is designed more particularly for producing the beads on hoops which are to be used on barrels, kegs and the like.

Prior to my present invention these beads have been formed either by a rolling action of forming rolls or by a reciprocatory die which formed the head the full length of the hoop strip at one operation, the latter type of machine being disclosed in Patent No. 1,071,733 granted Sept. 2,1913.

Hoops beaded by a rolling action have not been commercially satisfactory for the rea son that the beading operation stretched the metal at the bead edge of the strip which caused the strip to twist, and furthermore, hoops formed from these strips would be larger in diameter at the bead edge than at the opposite edge when as a matter of fact they should be smallest in diameter at the bead edge.

In the type of machine disclosed in the patent above mentioned strips not exceeding a predetermined length only, for which the machine was designed, could be beaded in this machine. In other words, the strips of metal were required to be cut intolengths before they were fed into the beadingmachine and sincethe entire length of the strip was beaded at one operation it was necessary to deliver the beaded strip from the machine and introduce a complete new strip into the machine before the next operation of the beading mechanism could take place. The average length of a hoop is approximately eight feet, consequently, the act of feeding this length of material through the machine between successive beading operatious necessitated considerable delay between successive operations of the die, thereby limiting the speed and output of the machine. Furthermore, since the ad vancing rolls were continuously operated it frequently happened that if the rolls were set a little too close together or if the metal strip was a little too thick the rotation of the rolls, while the strip remained stationary during the operation of the die, would. because of the excessive friction between the metal strip and the rolls, cause the rolls to heat and burn the strip in addition to imposing excessive strains on the roller bearings which materially decreased their wearing life.

Bearing in mind the disadvantageous fea tures of the prior machines which I have briefly outlined I have designed the machine disclosed herein with a view of overcoming these ditliculties.

One of the primary objects of my invention therefore is to provide a machine which will form a perfect head of the required shape and dimensions on the edge of a metal strip without stretching the metal so as to increase the length of the strip or cause the beaded strip to twist or to elongate one edge of the strip relatively to the other.

Another object of my invention is to provide a machine which will form a bead on a strip of metal of any desired length. In other words, my present invention provides a machine which will bead a continuous strip of metal which can be fed from a roll and coiled again upon its delivery from the beading machine and which can subsequently be cut into any desired lengths.

A further object of my invention is the provision of a machine in which the feeding, advancingand delivering rolls will all remain idle duringthe actual beading operation of the die so that any possibility of buckling or wearing and burning the strip by the rubbing of the rolls is entirely elimi nated.

Still another object of my invention is to subject each portion of the metal strip during its passage through the machine to the action of successive portions of the die so that instead of forming the complete bead at one operation the head is produced by a succession of operations of the die, thereby minimizing the strain and wear upon the machine.

A further object is to feed the strip through the machine intern'iittently, that is, by a step by step motion so that the strip is held stationary during, the actual beading operation of the die but is moved forward at a high rate of speed between the successive operations of the die with the result that the machine may be run at a high rate of speed.

A further object is to hold the metal strip in proper position to be operated upon by the die without the use of clamps, the elimination of which not only relieves the inachine of one of the heretofore considered vital elements but also obviates any possibility of inaccuracy in the operation of the machine which might result from an improper timing of the clamps with respect to the die movements.

A further object is to provide a yielding driving mechanism for all the parts of the machine eZ-itcept the positively operated die so that the timing of the parts is taken care of automatically by the yielding drive, with the result that not only the possibility of inaccurate timing is eliminated but the speed of the machine is materially increased and the output of the beaded product is commensurately larger.

Other objects and many of the attendant advantages of this invention will be readily appreciated by those skilled in the art as the same becomes better understood by reference to the following description when considered in connection with the accompanying drawings illustrating a preferred embodiment thereof.

Referring to the drawings Figure 1 is a plan view of a hoop beading machine embodying my invention;

Fig. 2 is an end elevation looking at the right hand end of the machine shown in Fig. 1; v

Fig. 3 is a fragmentary sectional view taken on the line 33 of Fig. 2;

Fig. 1 is a longitudinal sectional view taken on the line 41 of Fig. 3;

Fig. 41 is a detail sectional view on a larger scale showing the pass formed between the combined feeding and crimping rolls illustrated in Fig. 4;

Fig. 5 is a side elevation looking toward the near side of the machine shown in Fig. 1;

Fig. 6 is a sectional view taken on the line 6-6 of Fig. 1;

Fig. 7 is a sectional view taken on the line 7-.7 of Fig. 6;

Fig. 8 is a sectional view taken on the line 88 of Fig. 6;

Fig. 9 is a horizontal sectional view through the bead-forming die showing the shape'of the forming groove;

Fig. 10 is a sectional view on the line 10-10 of Fig. 1 showing the interior of the spring gear;

Fig. 11 is a view taken on the line 11-11 of Fig. 10;

Figs. 12, 13 and 141 are sectional views through the die and adjacent cooperating elements taken substantially on the lines 1L-12, 1313 and 14-44 respectively, of Fig. 9;

Fig. 15 is an end view looking at the delivery end of the machine shown in Fig. 1;

Fig. 16 is a sectional view on the line 16-16 of Fig. 15; and,

Fig. 17 is a horizontal sectional view on the line 17-17 of Fig. 15.

By reference to the drawings it will be observed that the machine frame or bed des ignated generally by reference character 18, which may be of any suitable size and dimensions to accommodate the operating mechanisms hereinafter described, is supported upon legs or pedestals 19 or in any other convenient manner. A power shaft 21 journaled in suitable bearings 22 in the machine frame is equipped at its rear end with the ordinary fast and loose pulleys 23 and 2 1, through which power is transmitted to the shaft from any suitable source. The front end of shaft 21 is equipped with a bevel gear 25 which meshes with a 1 companion gear 26 fixed on an intermediate shaft 27 which is mounted in suitable bear ings 23 on themain frame and is equipped at its outer end with a pinion 29 (see Fig. 2).

A counter shaft 31 mounted in suitable bearings 32 extends transversely of the machine at its forward end and has loosely mounted thereon a gear wheel 33 meshing with and adapted to be driven by the pinion 29. This gear wheel 33 has a yielding driving connection with the shaft 31, as will best be understood by reference to Figs. 10 and 11.

Referring to these figures, it will be observed that the outer face of gear wheel 33 is provided with an annular groove or channel 34 which is provided at intervals with-integral partitions or vanes 35. A spider wheel 36 keyed to the shaft 31, as shown in Fig. 11, is equipped on its inner face with lugs or ears 37 which project into the groove 34 of the gear wheel. Between each vane of the gear wheel and its preceding car 37 on the wheel 36 there is interposed a compression coil spring 38 by which the shaft 31 is yieldingly driven from the gear wheel 33, which construction permits the shaft 31 to intermittently stop while the gear wheel 33 continuously rotates, and it will be obvious that after each stop of the shaft 31 said shaft when released will be immediately rotated at a supernormal speed by the compressed springs 38 until these springs have been elongated to their normal condition whereupon the shaft will be rotated at the same speed asthe gear wheel. To prevent the ears 37 from knocking against the preceding vanes 35 upon release of the shaft 31 I have interposed between each ear 37 and the preceding vane 35 a buffer spring 39 which takes up the shock and prevents knocking and chattering of the gear. With the exception of the bead-forming die which is operated directly from the main drive shaft 21, as will be later described, all of the mechanisms of the machine are operated from the yieldingly driven counter shaft 31.

The construction and operation of the feeding and crimping .rolls by which the metal strips are introduced in the machine and preliminarily bent or curved along one longitudinal edge to facilitate the forming operation of the die will now be described. Referring to Figs. 1 to 5 inclusive, it will be observed that at the forward end of the machine are mounted the feeding and crimping rolls 41 and 42. The roll 42 is provided with a peripheral groove slightly inclined at one side, as indicated by reference character 43 (Fig. 4 and the upper companion roll 41 is similarly shaped to lit in the groove of roll 42 so that a strip of metal 44 of suitable width to fit in the groove is clamped between the rolls, fed forward as the rolls rotate and during its passage between the rolls is slightly. bent upwardly at one edge as shown in Fig. 4*. Rolls 41 and 42 are fixedly se cured upon the shafts 45 and 46 respectively, which in turn are journaled in the bearings 47 and 48, suitable bushings being interposed between the shafts and the bearings and, as will be observed from Fig. 4, the bushings are spaced. apart at the center to provide oil pockets for lubrication purposes. The bearings 47 and 48 are mounted inside a housing 49 carried upon a bracket projecting forwardly from the main frame of the machine. The shafts are driven through intermeshing gear wheels 52 and 53, the gear wheel 52 being in turn driven from an idler 54 which meshes with a gear 55 mounted on the shaft 31.

In order to provide for adjustment of the .rolls 41 and 42 toward and from each other to accommodate strips of various thicknesses and in. orderthat either or both of these rollsmay be adjusted laterally, that is, longitudinally of their shafts if desired, the bearings 47 and 48 are mounted in the following manner. The lower bearing 48 is supported upon the bottom portion of the housing 49 and has laterally extending wings projecting inside the side members of the housing. These ears, which are the same on both the bearings 47 and 48, are shown in dotted lines in Fig. 4 and are indicated by reference character 56. Their structure, however, will be more clearly understood if at this point reference is had to Fig. 17, which shows a substantially identical construction employed in connection with the rear delivery rolls of the machine, the bearing 57, shown in Fig. 17, corresponding to the bearing 47 of Fig. 4, and the ears 58 being constructed like the ears 56 shown in dottedlines in Fig. 4. The housing 59,

Fig. 17, is like the housing 49 of Fig. 4; and from these two figures it should be manifest that the bearings 47 and 48 are capable of longitudinal adjustment relatively to the housing, which adjustment is el'li'ected by means of set screws 61, in Fig. 4, and (32, in Fig. 17. Since the rolls fit tightly against the bearing at one end and the driving gears fit tightly against the bearing at the other end it will be apparent that longitudinal adjustment of the bearings will effect the required adjustment of the rolls. The bearings 47 and 48 are adjusted toward and from each other and held in the required spaced relation by adjusting bolts 63, the heads oi which rest upon flat spaces upon the top of the bearing 48 and the ends of which project into sockets (34 formed in the bottom of the bearing 47, nuts being employed to raise or lower he bearing 47 relatively to the bearing 48. hen each end of the bearing 47 has been adjusted to the required height, and it should be observed at this point that the ends are capable of independent adjustment, then the bearings are locked together by set screws 66 threaded through the top of the housing 49 into engagement with the upper face of the bearing 47.

The metal strips or a continuous strip, as the case may be, are guided to and between the rolls 41 and 42 in a guideway 67 and the strip as it emerges from the rolls enters a. guide-slot 68 through which it is conducted to the advancing rolls, which will, now be described. Referring more particularly to Figs. 5 to 8 inclusive, it will be observed that in a housing comprising lower and upper members 69 and 71 extending longitudinally of the machine at one side thereof there is mounted a plurality of pairs of advancing rolls, the upper roll of each pair being indicated by reference character*72 and the lower roll by 73. In the present instance eight pairs of these rolls are shmvn, but it should be manifest that the number of pairs is dependent upon the length of the machine, and since these pairs are sub stantially duplicates of each other a detailed explanation of one pair will sutlico for an understanding of my invention.

Referring now to Fig. 6, it will be observed that each. roll 79 is lined upon a shaft 74 and each roll 73 is fixed upon a corre sponding shaft 75, the two shafts in each pair being geared together by intermeshing gear wheels 76 and 77. The rolls themselves are made preferably of hardened steel and are adjusted to tightly embrace and hold the metal strip between them so that when the rolls are revolving the metal strip will. be advanced at a speed equal to the peripheral speed of the rolls, and when the rolls are standing still the strip will be tightly held between them. In order that the rolls may be adjusted toward and from each other to accommodate strips of various thicknesses, and in order that they will exert the required pressure upon the strip, I have provided mechanism for vertically adjusting both of the shafts 74; and 75. From Fig. 6 it will be seen that the upper shaft 7% is carried in a bearing 78 which is suspended from the top 71 of the housing on a threaded bolt 7 9 and that each end of the bearing is engaged by an adjusting set screw 81. The manner of adjusting the hearing by manipulation of bolt 79 and the screws 81 should be obvious without further explanation. The lower bearing 82 is similarly adjustably supported by means of a bolt 83 and adjusting screws 84-, bushings 85 being preferably inserted in. the bearings around the shafts as shown.

As previously explained, the advancing rolls of each pair are connected to rotate together but in opposite directions by gear wheels 7 6 and 77. It is essential, however, that the various pairs of rolls be connected together so that they will be driven at one and the same speed, and with this end in view I have fixed upon the outer ends of alternate shafts 74, gear wheels 86 which mesh with companion gear wheels 87 fixed upon alternate shafts 75, all as best shown in Fig. 5. This construction provides a continuous driving connection between the pairs of rolls which causes the rolls to rotate in the proper direction and at the same speed or angular velocity. The gear wheel 86 at the right hand end of the train, viewing Fig. 5, is driven from the counter shaft 31 by means of a gear wheel 88 fixed thereon which transmits its motion to the nearest gear wheel 86 through the intermediary of the idler 89.

The metal strip, which has been preliminarily bent at one edge by its passage between the heading rolls 11 and 12, is delivered from the guide-slot 68 into a guide-slot 91 formed between two plates 92 and 93 respectively, which are clamped together by suitable bolts 9 1 or other means, and are machined or otherwise shaped to provide the guide-slot 91 and to fit between the pairs of advancing rolls as shown in Fig. 8, so that the slot 91 in conjunction with the various pairs of rolls provides a continuous guideway through the machine to the delivery slot 95 at the rear of the machine which is similar to the guide-slot 68 at the front. A removable insert or guide bar 96 is clamped between the plates 92 and 93 at the rear or bottom of the slot 91 which serves to guide the metal strip in its travel along the slot as well as to form an abutment to hold the strip against lateral movement when its edge, which projects beyond the rolls, 1s being subjected to the action of the die.

Referring now to Figs. 7, 9, and 12 to 1% inclusiveyit will bev observed that the die,

a longitudinally extending bead-forming groove or slot 98 which is of maximum depth at its receivlng or right hand end, viewing Figs. 7 and 9, and gradually diminishes in.

depth to a point approximately one-quarter of its length from its left hand end, the remainder of the groove from the end of its taper being of uniform depth. Fig. 12 shows the shape of the groove at the receiving end, Fig. 13 the shape approximately on the line 1313 of Fig. 9, and Fig. 1 1 the shape of the groove approximately on the line l t-14: of Fig. 9 and from that point to the left hand end of the die. The die, as shown on the drawings, has one groove; that is, a groove on one edge only, but in practice a similar groove may be provided on the other edge if preferred, thus providing a two-faced die which is capable of reversal so that either face may be used. The die is supported upon a bed 99 to which it is clamped by an overlying plate 101. The bed is guided so as to'reciprocate horizontally by guideways 102 at each end thereof and is reciprocated by a pair of connecting rods 103 disposed in guideways 104 formed on the mainframe, the connecting rods being attached at their outer ends to eccentric straps 105 embracing the eccentrics 106 fixed on the continuously operating main shaft 21. It will be obvious that at each rotation of the shaft 21 the die will be reciprocated in a horizontal plane toward and from the ends of the advancing rolls, and since the bead-forming groove in the die is disposed substantially in alinement with the guide slot 91 the projecting edge of the metal strip, which has been preliminarily bent by the feeding rolls, will be engaged by the die and the edge will be rolled or turned by successive operations of the die from the form shown in Fig. 12 to the form shown in Fig. 141, which represents the completed bead. The bead is not formed by one opera tion of the die, as has previously been done, but each portion of the metal strip is subjected to successive portions of the die, and by reason of the tapered formation of the bead-forming groove in the die it will be manifest that the completed bead is the result of a series of die operations, each operation bending the bead a little farther until the complete bead is produced. Between the successive die operations the strip is, of course, advanced a predetermined distance through the machine.

When the metal strip with the completed bead thereon leaves the rear guide groove 95 it is received betweentwo delivery rolls 107 and 108 respectively, the construction and operation of these rolls being best illustrated in Figs. 1, 5, 15, 16 and 17. The upper roll 107 is provided with a peripheral groove 109 adapted to receive the bead which has been formed on the strip, while the lower roll 108 has a substantially smooth periphery. Roll 107 is mounted on a shaft 111 which in turn is j ournaled in the bearing 57 adjustably mounted in the housing 59, as previously explained, and the shaft 112 upon which roll 108 is carried is mounted in a bearing substantially identical with bearing 48, previously described. Intermeshing gear wheels 113 and 11 1 fixed upon the inner ends of shafts 111 and 112 respectively, serve to drive the rolls at the same speed in opposite directions, the gear wheel 113 being driven from a gear 115 through the intermediary of an idler 116. The housing 59 in which the delivery rolls are mounted is carried upon a bracket 117 projecting rearwardly from the main frame of the machine and rearwardly of the rolls there may be mounteda downwardly curved block 118 which bends the issuing strip of metal downwardly and causes it to coil into a coil of the desired size.

The gear wheel 115 is fixed on one end of a shaft 119 which is mounted in suitable bearings 121 on the main frame and carries at its other end a bevel gear 122 meshing with and driven by a companion bevel gear 123 fixed on the rear end of a shaft 124 which in turn is driven from the counter shaft 31 by a pair of bevel gears 125. It will thus be obvious that the delivery rolls as well as the advancing rolls and also the feed rolls are all driven directly from the yieldingly driven counter shaft 31.

The operation of my invention is as follows: When power is applied to the main shaft 21 the die will be reciprocated at each revolution of this shaft and the feeding, advancing and delivering rolls will all be rotated at the same peripheralspeed from the yieldingly driven counter shaft 31. The end of a strip of metal is now fed to the feeding and crimping rolls 41 and 42 which preliminarily bend the inner longitudinal edge of the strip and deliver said strip into the guide slot 68 from which it is delivered into the guide slot 91 and is engaged and advanced through the machine by the successive pairs of advancing rolls 72 and 73. When the die is forced against the partially bent edge of the strip the strip is clamped between the rear wall of the bead-forming groove and the abutment strip 96 so that further advancing movement of the strip is prevented. The advancing rolls which grip the strip very tightly are accordingly held by the strip against rotation and through the gear train theserolls stop the rotation of the counter shaft 31, thereby stopping the rotation of the feed rolls and also the delivery rolls. The stopping of theshaft 31 is permitted by reason of the springs 38 interposed between the gear wheel 33 and the spider wheel 36 fixed 011 the shaft 31. The gear wheel 33, however, continues its movement by reason of the fact that it is geared directly to the continuously rotating main drive shaft 21. The stoppage of the shaft 31, however, is only momentary since the die only engages the strip during the last portion of its operative stroke and as soon as the die begins to retract sufficiently to relieve the friction on the metal strip the strip is immediatelyadvanced by the advancing rolls and the initial advancing movement will be super-normal, or, in other words, greater than the normal speed of the shaft 31 because of the accumulated energy in the springs 38 which causes the shaft 31 to start at high speed as soon as the clamping action of the die against the metal strip is released. In actual practice in the machine illustrated the strip will be advanced approximately eight inches before the die on its next stroke again clamps the strip and further forms the partially completed bead but the distance that the strip will advance between. successive die operations may be varied in different machines by varying the proportions of obvious co6perating mechanisms. This alternate clamping and forming of the strip by the die and the advancing of the strip by the feed advancing and delivery rolls is continued so long as material is fed to the machine. It will be manifest that since the strip is advanced only about eight inches between successive actions of the die that each portion of the strip is subjected to several successive operations of the die, each successive operation on any particular portion of the strip being performed by a shallower portion of the die groove so that the bead is actually producedby a series of successive die operations. lVhen it is consider'ed that a machine constructed in accordance with my present invention can be run at a speed between 300 and 4100 revolutions per minute it will be manifest that the periods during which the shaft 31 remains stationary are exceedingly short, particularly in view of the fact that the strip is clamped during only a small portion of the forward stroke of the die while the strip is free to advance during the complete rear ward stroke and the major portion of the forward stroke of the die. The operation of the machine is therefore very rapid and all of the objects and advantages set forth in the fore part of the specification can be attained and accomplished by that embodiment of my invention shown and described. herein, the construction and operation of which should be fully understood from the foregoing without further description.

I claim:

1. In a beading machine, the combination of a transversely moving reciprocatory die, shaped to form a bead on one edge of a fiat metal strip and arranged to reciprocate in a path parallel with the flat sides of the metal strip and means for feeding the strip lengthwise through the machine by a step by step movement to thereby progressively subject each portion of the edge upon which the bead is formed to the action of successively different portions of the die.

2. In a beading machine, the combination of a transversely moving reciprocatory die, shaped to form a head on one edge of a flat metal strip and arranged to reciprocate in a path parallel with the flat sides of the metal strip and intermittently operated means for feeding said strip by a step by step movement past said die.

8. In a beading machine, the combination of'a transversely moving reciprocatory die, said die varying longitudinally in cross sectional contour and being arranged to reciprocate in a path parallel with the fiat sides of the metal strip and means for presenting one edge of the strip of metal to the action of successive portions of said die.

4.. In a beading machine, the combination of a transversely moving reciprocatory die having a groove decreasing in depth from the receiving end of the die and means for feeding a flat metal strip lengthwise through the machine by a step by step movement, said die reciprocating in a path parallel with the flat sides of the metal strip and thereby progressively presenting the edge of said strip to the bead forming action of successively different portions of said reciprocating die. a 5. In a beading machine, the combination of a transversely moving reciprocatory die shaped to form a bead on one edge of a flat metal strip and arranged to reciprocate in a path parallel with the flat sides of the metal strip and intermittently operated means for alternately advancing and holding said metal strip to thereby progressively subject the edge of said strip to the beading action of successively different portions of said reciprocating die.

6. In a beading machine, the combination of a reciprocatory bead-forming die, means for feeding a strip of metal to move its edge across the path of movement of said die, and mechanism for driving said feeding means, said mechanism including a clutch mechanism constructed to permit the feeding means to stop when the pressure of the die upon the edge of the metal strip exceeds a predetermined degree.

7. In a beading machine, the combination of a guide through which a metal strip is fed, a bead-forming die reciprocable in proximity to said guide, feeding rollers for advancing the strip along the guide, and a yielding clutch mechanism for driving said rollers, said mechanism being constructed to permit the rollers to stop during the bead ing actions of the die and to advance the strip at a supernormal speed immediately after each action of the die. I

S. In a beading machine, the combination of a continuously operating shaft, a beadf-orming die operated thereby, means for feeding a strip of metal across the path of movement of said die, and a driving connection between said shaft and said feeding means, said connection including a yielding clutch permitting said feeding means .to stop during the operation of the die and causing a supernormal speed of the feeding means immediately following each operation of the die.

9. In a beading machine, the combination of a plurality of strip-advancin g rolls, a reciprocatory bead-forming die mounted to operate upon the edge of a strip engaged by said rolls, mechanism for yieldingly driving said rolls so as to permit the rolls to step during the operative stroke of the die and means for actuating said driving mechanism.

10. In a beading machine, the combina' tion of a continuously opera-ting shaft, a bead-forming die connected to said shaft so as to be reciprocated thereby, a plurality of strip advancing rolls disposed in proximity to said die so that a strip of metal engaged by said rolls will be disposed in the path of movement of said die, and driving connections between said continuously operating shaft and said rolls, said connections including a spring adapted to permit the rolls to stop when the die engages the metal strip and to operate the rolls at a supernormal speed upon the withdrawal of the die from said strip.

'11. In a beading machine, the combination of a continuously operating drive shaft, a die constructed to be reciprocated by said shaft, a plurality of advancing rolls adapted to advance a metal strip across the path of movement of said die, a gear connected to said shaft, operative connections between said gear and said advancing rolls including a yielding connection betweensaid gear and said rolls permitting the rolls to stop when the advance of the metal strip is checked by pressure of the die and causing the strip to be advanced at a supernormal speed upon withdrawal of the die from engagement with the strip.

12. In a beading machine, the combination of a continuously operating shaft, a beadforming die reciprocated thereby, a countershaft driven from said first mentioned shaft, a gear-wheel loosely mounted on said counter shaft, springs providing a yielding connection between said gear and said shaft, a plurality of advancing rolls mounted to continuously engage a strip of metal to be operated upon by the die, and connections between said gear and said rolls by which the rolls are operated to advance the metal strip past the die, said spring connection permitting said advancing rolls to remain stationary during each operation of the die upon said strip.

18. In a beading machine, the combination. of a plurality of pairs of advancing rolls adapted to frictionally engage and advance a strip of metal through the machine, a backing member positioned to prevent lateral movement of said strip, a reciprocatory die constructed to form a bead by successive operations upon each portion of one edge of the strip, means for adjusting said rolls to the thickness of the strip to be operated upon, and clutch forming yielding driving means for operating said rolls so as to permit the rolls to remain idle during the operative stroke of the die and thereby causing the strip to be advanced through the ma chine by a step by step movement. 7

l-el. In a heading machine, the combination of a plurality of pairs of advancing rolls constructed to advance a strip of metal through the machine, a bead forming die adapted to operate on said strip engaged by the rolls, gear-wheels connecting the rolls of each pair so as to cause said rolls to operate at the same speed, positive driving con nections between the upper and lower rolls of alternate pairs, and a clutch forming yielding driving means connected to one of said rolls from which the remainder of the rolls are driven.

15. In a beading machine, the combination of a pair of cooperative feeding and crimping rolls, a plurality of pairs of advancing rolls, a pair of delivery rolls, means for driving all of said rolls at the same speed from a common shaft, a reciprocatory CllBttClilPllOt to produce a bead upon the edge of a strip of metal engaged by said advancing rolls, means for continuously operating said die, and yielding means for driving said shaft, said yielding means including a clutch adapted to permit all of said rolls to momentarily stop during the operation of the die.

16. In a beading machine, the combination of a continuously operating driving shaft, a counter shaft, spring gear connections between said shafts, means for advancing and guiding a strip of metal through the machine, a die positively operated from said main, shaft, and positive driving connections between said advancing means and said counter shaft, said spring gear connections between the main and counter shafts permitting the advancing means to stop during each operative action of the die.

17. In a beading machine, the combination of a plurality of pairs of advancing rolls, each. pair comprising an upper roll and a lower roll, a bearing in which the horizontal shaft of each of said rolls is rotatably mounted, and means for adjusting each of said bearings axially and vertically independently of the others, each of said vertical adjusting means comprising a plurality of set screws affording adjustment for each end of the bearing.

18. In a beading machine, the combination of a pair of advancing rolls, a horizontal shaft upon which each of said rolls is mounted, a bearing for each of said shafts, and means for positively adjusting said bearings axially and vertically toward and from each other, said vertically adjusting means comprising a plurality of set screws permitting independent adjustment of each end of the bearing.

19 In a beading machine, the combination of a pair of advancing rolls, a bearing for each of said rolls, and adjusting means for reach bearing comprising a central set screw threaded into the bearing intermedi ate its ends, and an abutment screw at each end of the bearing whereby the ends of said hearing may be independently adjusted and held in adjusted position.

20. In a beading machine, the combina tion of a pair of substantially parallel shafts, strip feeding rolls mounted thereon in cooperative relation, hearings in which said shafts are mounted, and adjusting means whereby the distance between said shafts may be varied and means whereby the shafts may be adjusted relatively to each other longitudinally.

21. In a heading machine, the combina tion of a pair of shafts, co-acting strip feeding rolls mounted on said shafts, hearings in which said shafts are journaledi housings in which one of said bearings is mounted, means for adjusting said bearings longitudinally in said housings, and means whereby the distance between said shafts may be adjusted.

22. In a beading machine, the combination of a housing, a pair of bearings mounted therein, a shaft journaled in each hearing, cooperating strip feeding rolls mounted on said shafts, means whereby the ends of said bearings may be adjusted toward and from the other bearings, and means whereby said bearings may be independently adj usted longitudinally.

23. In a heading machine, the combination of a plurality of pairs of strip advancing rolls, stationary means disposed between each pair of rolls for guiding a strip of metal through the machine, a backing strip at one side of said guiding means to hold said strip against lateral movement, and a reciprocatory die constructed to engage an opposite edge of said strip and produce a bead thereon by successive operations of the die.

24. A beading machine comprising a transversely moving reciprocatory die, said ing in depth from the receiving end thereof and arranged to progresslvely brmg different portions of said groove into engagement 10 die reciprocating in a path parallel with the flat sides of a metal strip and an intermittently operating feeding mechanism said mechanism being arranged to deliver said with the edge of said metal strip in formmetal strip lengthwise into position for ening a hollow bead on said edge of the strip. gagenient by said die and said die having a bead forming groove in one side decreas- FRANK GLADER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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