US950754A - Positive feeding device for paper strips or the like. - Google Patents

Description

0v. OEHRING. POSITIVE FEEDING DEVICE FOR PAPER STRIPS OR THE LIKE.

APPLICATION FILED DEC. 22, 1908. 95Ufi5 Patented Mar. 1,1910.

2 SHEETS-SHEET 1.

, 0. OEHRING.

POSITIVE FEEDING DEVICE FOR PAPER STRIPS OR THE LIKE.

APPLICATION FILED 1330.22, 1908. 950,754. Patented Mar. 1,1910.

2 SHEETS-SHEET 2.

WAX/14.070129 2 xzw OSCAR OEHEING, F BERLIN, GE 6:1

T It? ANY, ASSIGNOE. .Tfl THE FIRM 0F HEINRICH WULLHEIM ANT) OSSENEACH, INDUSTEIEGESELLSCHAET M. 13. If, 0F BERLIN,

GERMANY.

951d, Td ll.

POSITIVE FEEDING DEVICE EOE PAPER STRIPS THE LIKE.

Patented lldar. niaia.

Application filed December 2%, 190a Serial No. $558,838.

subject of the German Emperor, and residing in Berlin, Germany, have invented certain new and useful Improvements in Positive Feedin Devices for Paper Strips or the- Like, 0 which the following is a full and clear specification, which is illustrated in the accompanying drawings and the nov-' elty of which is more clearly pointed out 111 the annexed claims.

Tn apparatus for printing and perforating paper strips of considerable length the feeding of the strip is usually obtained by intermittentlyo eratingfeeding rolls. This manner of feeding has the great disadvantage that the imprint,and more so the perforations, will not be made uniformly at equal distances, such as are necessary for producing tickets of any kind, stamps, or

the like, which, of course, should all be of perature, or also throng wear of the feedrolls. It is obvious that when a paper strip of great length is thus fed throu h the machine the small errors which mi t occur at each feeding stroke of the machine will accumulate during the passing of the paper strip through'the machine and cause considerable differences in the distances of th'e perforations or the print; moreover, in case it should be found in machines of the character desriribed above that the paper stri is not exactly fed at the distances desirec, it cannot be adjusted otherwise than by removing the feed rolls, and substituting rolls which will feed the exact distance desired, In the present invention all these disadvantages are overcome by providing, in addition to the feeding rolls, an independent needing device which, however, will be en'- actly timed and coiperate with the feeding rolls. This additional feeding device is adapted to recti" at each feeding stroke,

late.

made in the strip, or the printing on it, will be at .equal distances. This isof great importance in cases in which stamps or tickets of any kind are distributed in so-called vending machines, in which the paper strip is inserted in a huge roll, and which feed the strip at equal distances.

T have illustrated in the accompanying drawings, as an example, how, my invention may be reduced to practice. I ,v

In these drawin 's Figure 1 is a side view of a feeding and perforating apparatus. Fig. 2 is a plan View thereof, and Fig.;-3 is a transverse section on the line X-Xin tached to the machine, to be by means of feeding rolls table a.

printed) is fed a, c on ceding Feed rolls 0, 0, however, operate only with a part ofthe circumference; that is to say, only with theportions e, e, which, when the rolls revolve,'contact-with rolls f, 7", yleldingly dlSPOSGd abovethe table. Rolls toward rol s c, 0 only a certain distance, so that after the operative portions of rolls a are out of engagement with rolls 1 the paper strip which is fedbetween these will then be ree.

On a shaft h, journaled in the machine frame, are fixed-arms, g, g, one on either side of the paperstrip, which are connected at their upper ends through a cross rod 2' on which a suitable number of yieldingly movable fingersic are disposed, which bear yieldin 1 against the pa er. strip 7). Slots 'ar grovided in table iz, through which a ing g, g protrude and in which they may oscil- Un a shaft 91,, also journaled .in the machine frame, is fixed an arm Z, provided, at its upper end, with contact roll m, which -bears against snail cam, 9. This cam is mounted together with transport rolls 0 on the same shaft K. Arms 9, g are further connected with each other bya rod which serves as a ivot for a connecting, rod g, the other end 0 which is threaded and disposed in a hole provided at the upper end of arm Z.'

f, f are disposed so that they may bemoved By means of thumb nuts", provided on rod 9', the distance between arms g and Z may be regulated. Two springs a, suitably fastened-at one end to the machine frame and at the other end to arms gare provided' roll m, which rests on cross bar 3 to which reference will be made later .on.

Transverse to the longitudinal axis of feeding table a is disposed a. die plate 2, which is countersunk in the table so that its surface is flush with the latter. In die plate a is provided a row of holes A, running transverse to the paper strip, which holes cooperate with punches G fastened in punch head B. Head B is fixed to guide rods D disposed vertically to table a and connected at their corresponding ends with cross bars 3 y to form a rigid frame therewith. On table a are fixed, in vertical position,

supports F, which are connected at their upper ends by a cross bar E. This bar, together with die 2, forms a guide for rods D,

to which the punch head B is fastened. Be-

tween the upper ends of rods D and cross bar E are disposed, on each rod D, compression springs G, which tend to lift rods D, together with the punches fastened thereon and together with arm v, which rests with roll a: on the lower cross bar 3 as described before. Thus it will be seen contact rolls w will always be kept in contact with their snail cams u.

On shafts K and t are also mounted sprocket wheels H, H, which are connected by a chain J, indicated in dot and dash lines. The machine may be driven from shaft K by any suitable means, not shown in the drawing.

It is obvious that instead of using a punching device a. printing device of any suitable kind well known in the art may be operated by the vertical reciprocating frame, or, a separate printing device, operated in the same manner as described, may be used conjointly with the punching device. This,

however, does not pertain to the subject matter of m invention, and I have therefore omitte illustration and description thereof, and merely shown the punching device to illustrate means which require the feedin of paper strips intermittently and at uniform intervals.

- The operation of the device described above isas follows: The paper strip 6 to be perforated is, at the beginning, perforated twice, at the distance in which the following perforations should be made, in order to allow the fingers k, at the beginning of the operation, to engage in the perforations. If now the machine is operated from shaft K,

in the feeding direction.

in the direction indicated by the arrows in Fig. 1, the elevated portions 6, e of feed rolls 0 will ress the paper strip which has been placed between rolls f and 0 against rolls f, and will feed it in the directlon indicated by the arrow L until the elevated portions 0 have passed. In the meantime, owing to the action of. springs 8, contact roll m has dropped from the highest to the lowest point of the snail camp, and has thereby thrown arms 9, together with fingers is, back against the feeding direction. If now snail cam 12 continues to revolve it will gradually lift roll m and cause arms 9 to move forward Thereby fingers 7.: will engage in the perforations of paper strip band will shift it forward to a fixed point (the paper strip then being free between rolls f and c). If the machine continues to operate snail cams u now commence to depress arms 6, thereby depressing rods D, and with them punch head B. Punches C will thus perforate the paper strip (and in case a printing device is attached to the machine the printing is done at the same time). It will be seen that during the perforating period roll m is in contact with the concentric portion of snail cam p, and

.the elevated portions e of feed rolls 0 are out of engagement with feed rolls 7, so that at that time the paper strip will be at rest. On further rotation of snall cams a contact rolls w will drop from the highest to the lowest point of the snail cant through the tension of compression s rings G, which will, in turn, cause the li ting of the punches from the table, and the freeing of the paper strip from the punches. The timing of the devlce is so that now the elevated'portions of feed rolls 0 will come again into engagement with rolls f, and thus take hold of the paper strip and feed it forward, as described above. Subsequently the fingers 7: will be thrown back against the feed direction and engage in the next row of perforations and again adjust the feeding of the aper strip to the proper distance, indepen ent of the feed rolls, as described above.

It is obvious that (of course within certain limits at each stroke) no matter to which point the feeding rolls may have fed the strip, the following fingers is will engage the strip in the perforations during their forward stroke and carry the perforated line to a fixed point which is determined so that the portions of the strip which are next to be operated upon will be in proper line with the operating device, in this particular which the paper strip should be fed by fiu mmp i gers a may be exactly defined, so that thus the distances at which the perforations are made in the strip will always be equal."

I claimi l 1'. In a machine for feeding paper stri s or the like, having perforations at pre etermined intervals, the combination with a fixed feeding table, and feeding rolls adapt ed to intermlttently feed a paper strip for a portion of an interval; of reciprocating feeding arms having fingers adapted to yieldingly engagesaidstrlp at each perforation during the forward stroke of the arms in the feeding direction, subse uently. to the feed ing by said rolls to ositlvely feed said strip the remainder oft e interval between two perforations independently of said rolls. 2. In a machine for feeding paper stri s or the like, having perforations at pre etermined intervals, the combination with a' fixed feeding table 'and'feeding rolls adapted to intermittently feed a paper strip for a portion of an interval; of reciprocating feeding arms and a snail, cam for operating said arms, said arms having fingers adapted to yieldingly 'en age said strip at each perforation during t e forward stroke of the arms in the feeding direction subsequently to the feedin by said rolls, to positively feed said strip t e remainder of the interval between two perforations independently of said rolls.

3. In a machine for feeding paper strips or the like, having perforations at predetermined intervals, the combination with a fixed ing stroke of said arms.

'feedin g table, and feeding rolls adapted to intermittently feed a paper strip for a porforations independently of said rolls, and

means for adjusting the length the feed- 4. In a machine for feeding paper strips or the like, having perforations at predetermined intervals, the combination with a fixed feeding table and feeding rolls adapted to'intermittently feed a paper strip fora portion of an interval; of reciprocating feeding arms and a snail cam for operating said arms; said arms having fingers adapted to yieldin'gly engage said stri 1 at each perforation during the forwar stroke 'ofthe arms in the feeding direction. subsequently to the feeding by said rolls, to positively feed Said strip the remainder of the interval between two perforations independently ofsaid rolls, and means for adjusting the length of the feeding stroke of said arms;

- In testimony whereof I have set hereunto 1 my hand in the presence of two WitIlBSSGS? OSCAR OEHRING.

' Witnesses:

HENRY Ilasrnn, WOLDEMAR HAUPT.

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