US1218249A - Machine for bending and piercing fiber strips or similar material. - Google Patents

Description

C. ENGLERT- MACHINE FOR BENDING AND PIERCING FIBER STRIPS 0R SIMILAR MATERIAL.

APPLICATION FILED MAR. 31. I915. 1,218,249. Patented Mar. 6, 1917.

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C. ENGLERT.

MACHINE FOR BENDING AND PIERCING FIBER STRIPS 0R SIMILAR-MATERIAL.

APPLICATION FILED MAR. 31, 1915- 1,218,249. Patented Mar. 6, 1917.

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UNITED STATES PATENT OFFICE CHARLES anemia, or nocnnsrnn, NEW YORK.

" MACHINE FOR BENDING AND PIERGING FIBER STRIPS State of New York, have invented certain new and useful Improvements in Machines for Bending and Piercing Fiber Strips or Similar Material, of which the following is a specification.

The object of my invention is to provide a machine that will bend fiber strips and piercethem with nail holes so as to make 7 them suitable for use in the manufacture of trunks and similar products.

Fiber strips have heretofore been bent I into angular shapes, but if bent'cold there is a tendency of the stock to break at the apex of the angle. To avoid this it has been necessary to soften the fiber with steam before bending it, the machine used for bending the stock being of a design similar to that of the ordinary tinsmith bending machine which operates very slowly and unsatisfactorily. The cost of bending fiber with such a machine and under such conditions is very great and it is the, main object of my invention to reduce this cost to a minimum. While attempts have been made to use rolling machines for bending fiber into angular shapes they did not prove successful. In my present invention, however, I have designed a rolling machine which will overcome allgthese difiiculties, which machine will operate successfully to bend the stock while cold and without softening the stock.

.Another object of this invention is to provide this machine with a piercing mechanism that will perforate the strip while being bent into the desired shape.

These and other objects of the invention will be fully illustrated in the drawings, described in the specification and pointed out in the claims at the end thereof.

In the accompanying drawings,

Figure 1.is a side elevation of the machine showing the right hand side of the machine.

Fig. 2 is a front end elevation of the machine.

Fig. 3 is a top plan view of the machine.

Fig. 4 is a vertical section taken on the line 4 4 of Fig. 3, showing the train of gears for driving 'the machine.

Fig. 5 is a vertical section through some 55 of the rollers for bending the strips, the

Specification of Letters Patent.

on smrmn MATERIAL.

section being taken on the line 5 5" of Fig. 2.

I Fig. 6 is a vertical section taken on the l1ne 6"- of Fig. 5.

Fig. 7 is a vertical section through one of the yieldable journal boxes, the section belng taken on the line 7"- x of Fig. 2.

F g. 8 1s a transverse section through the gulde for gu dlng the fiber strips after they have been perforated, the section being taken on the line 8"'8 of Fig.3.

Fig. 9 is a detail view of ratlng rollers, in section. I

Fig. 10 is a vertical section through the perforating rollers, the section being taken on the line 10*10*- of Fig. 9.

Figs. 11, -12 and 13 are detail views of the fiber strips which have been perforated and bent into shape by the machine.

In the accompanying drawings like reference numerals-indicate like parts.

As shown in Figs. 1 and 2 the machine rests on the base plate 1 which may be supported by suitable legs (not shown) and to which are clamped, by means of the bolts 2, 2, the standards 3 and 4. These standards 3 and 4 are provided with the bearings for the shafts of I am now aboutto describe.

the roller being shown partly The shafts 5, 6 and 7 are stationary and.

. the. machine and rollers 20, 21 and 22 on the left hand side of the machine. In this wa three pairs of rollers are provided on eac side of the machine which are rotated simultaneously by means of the following gearing. I

Mounted in the standards 3 and 4 between the shafts 6 and 7 is the power shaft 7 which carries at the outer end thereof the driven pulley 23. Between the standards 3 and.'4 and keyed to the" shaft 7 is the pinion 24 which meshes with the gears 2* and 26 keyed to the shafts 6 and 7 respectively. The gears 25 and 26 in turn mesh Patented Mar. 6, 1917, Application filed March 31, 1915. Serial 17018388.

one of the perfothe bending rollers which 16 and 17 respectively. Mounted to rotate on a suitable stud provided in the standard 4 is the idle pinion 29 which meshes'with the gear 26 on one side thereof and the gear on the other side thereof. The gear 30 in turn meshes with the gear 31 keyed to the shaft 14. As shown in Figs. 2 and 3 all these gears are mounted between the standards 3 and 4 leaving the rollers mounted on the outside of the standards free and easily accessible to the operator of the machine. I i

It will be seen from the foregoing description of the train of gears that when power is applied to the pulley 23 the rollers mounted. on the end of the shafts 5, 6 and 7 will be driven in one direction and the rollers mounted on the end of the shafts 14, 15 and 16 will be driven in the other direction, the rotation of .the shaft 7 being such that the lower rollers on the right hand side of the machine revolve in a clockwise direction, while the upper rollers on the same side move in a counter clockwise direction, it being understood that the reverse is true of the rollers mounted on the left hand the standard 4 is a bracket 52, on top of which are mounted the vertical conical rollside of the machine.

Movable journal boxes 32 are provided in the standards 3 and 4 for the shafts 14, 15 and 16, which journal boxes are held in place by rubber buffers 33 mounted in the casings 34. These casings are bolted tothe top of the standards 3 and 4 by means of the bolts 35. Each of the casings 34 is provided with a set screw 36 which has threaded engagement therewith and passes through the top thereof. The end of this set screw engages a washer 37 provided on top of the rubber buffers 33. When it is desired to increase or decrease the pressure on the journal boxes the set screw 36 is turned to either increase or decrease the pressure previously put on the top of the rubber buffers 33. A lock nut 38 is provided on the set screw 37 to prevent the set screw from rotating after the desired pressure has been put on the rollers.

The roller 8 keyed, to the end of the shaft 5 is made up of a central portion 39, having the collars 40 and '41 on either side thereof. Each of these collars 40 and 41 is made up of the disks 42 and 43, each of which is provided with a number of radial grooves 44 and one concentric groove 45. Pins 46 are placed into the radial grooves in such a manner that the pointed ends thereof will project above the collar while the other end of the pins will rest against the inner side of the concentric groove 45 as shown in Figs. 9 and 10. The pins are clamped in place in these grooves between the disks 42 and 43 by means of suitable screws 47. The central portion 39 of the roller 8 is keyed to the shaft 5, but the collars 40 and 41 are loosely mounted thereon and are held in place-on the shaft-by means of the collars 48 and 49 fastened to the shaft 5 to prevent any lateral movement thereof. The roller 17 mounted above the roller'8 and key'edi to the shaft, 14 is provided with annular grooves 50 and 51 which are deep enough to nest the pins 46 projecting out of the collars.40 and 41.

The roller 9 mounted on the end of the shaft 6 is grooved, as shown in Figs. 1 and 3, while the roller 18, mounted on the end of the shaft 15 is aconvex roller and projects into the grooye of the roller 9, the

lower roller 9 being the female roller and the upper roller 18 being the male roller. The roller 10, mounted on the end of the shaft 7 is also a female roller, while the I roller 19, mounted to engage therewith and keyed to theend of the shaft 16, is a male roller. The groove in the roller 10 may be narrower and deeper than the groove in the roller 9 and the male rollers which engage with these grooves are correspondingly shaped to fit into tmesegrooves. This is for a purpose that will presently appear.

Between the rollers-8 and 9 fastened to lar space formed thereby. Provided on the bracket 52 below each of the conical rollers 53 and 54 are the anti-friction balls 61, on top of which the conical rollers rotate.

A guide 63 is mounted ona suitable bracket 64 in front of the rollers 8 and 17.

This guide consists of a table having a grooved plate fastened on the top thereof to receive the material. The opening of this guide is in line with the joint between the rollers 8 and 17.f The fiber stock passes through this guide 63 onto the joint between the rollers 8 and 17 and the pressure applied to the roller 17 clamps the stock between these two rollers and the rotation thereof pulls the stock through the guide and forces it between the. horizontal conical roller 62 and the stripper 69 fastened to the bracket 52. This conical roller 62 is mounted to rotate between suitable bearings in front of the vertical conical rollers 53 and 54 and the roller 60 is shown in Figs. 1, 3 and 5. After the stock has passed underneath the conical roller 62 it is forced between the vertical conical rollers 53. and 54 and the plain roller 60 mounted between said conical rollers. The conical roller 62 is provided to prevent the fiber strip, after leaving the rollers 8 and 17, from buckling up and to guide it onto the vertical conical rollers 53 and 54, which bend the strip slightly in the middle thereof. The roller (50, mounted between these two conical rollers, serves to hold the strip down on top of the bracket 52. The fiber strip when passing between the conical rollers 53 and 54 is bent to an angle of approximately 120 and as it passes on to the rollers 9 and 18, the sha )e, to which it has been bent, makes it possi le for the fiber strip to easily enter rollers 9 and 18, between which it is bent to an angle of about 90. From these rollers 9 and. 18 it passes onto the rollers 10 and 19 between which it is bent to a still sharper angle of probably 60. When the stock emerges from the rollers 10 and 19 it will spring back practically to 90, which shape it will retain, as shown in Figs. 12 and 13.

While the stock is passing between rollers 8 and 17 the pins 46 in the collars 40 and 41 will punch holes into the fiber strips through which nails can be driven afterward. The collars 40 and 41 are mounted loosely on the shaft 5 so that when the paper enters the roller the pins mounted on the collars 40 and 41 will line themselves with respect thereto so that the perforations made thereby will be symmetrical. The collars are also mounted loosely for the purpose of preventing the pins 46 to tear the fiber should it become stalled due to any irregularities in the thickness hereof. That is the collars 40 and 41 wit the pins 46 mounted therein are operated entirely by the paper passing through the rollers and receive their motion from the paper. When the paper stops these collars stop with it while the rest of the rollers may keep on rotating.

So far I have only described one side of the machine in which a fiber strip may be bent into a sharp angular shape. The other side of the machine is provided with similar rollers, the cross sections of, which are such that the stock passing through them will bend the angle with a radial corner shown in Fig. 13. For this purpose it is not necessary to mount a ty ical roller similar to the roller 62 in front of the conical rollers 53 and 54, because heavier stock-is used for rollers. The rollers 65 and 66 perforate the strip of fiber, shown in Fig. 11, after which it passes through the guide 67 to the end of the machine where it may be taken out, no bending rollers being provided to bend the strips. The guide 67 has the, cross section shown in Fig. 8 to prevent the fiber strips from buckling while passing therethrough. A strip of fiber perforated by these rollers is shown. in Fig. 11.

I claim:

1. In a machine for bending fiber the combination of a feed table, a pair of feeding rollers between which said feed table projects, a pair of bending rollers in line with said feeding rollers forming an angular space between them, idle rollers mounted to rotate between said feeding rollers and said bending rollers, said id'le rollers being adapted to bend the strips of fiber sufiiciently to allow the strips to enter said bending rollers.

2. In a machine for bending fiber the combination ofa pair of feeding rollers, a pair of bending rollers in line with said feeding rollers, a pair of vertical conical rollers loosely mounted between said bending rollers and said feeding rollers, a, horizontal roller mounted loosely between said vertical rollers, said vertical conical rollers and said horizontal roller being adapted to bend the strips of fiber sufficiently to allow the strips to enter said bending rollers.

3. In a machine for bending fiber the combination of a pair of feeding rollers, a guide roller mounted loosely and parallel thereto behind said feed rollers to prevent the strips from buckling after leaving said feeding rollers, a pair of bending rollers'in line with said feeding rollers, a pair of vertical conical rollers loosely mounted between said bending rollers and said feeding rollers, a horizontal roller mounted loosely between said vertical rollers, said vertical conical rollers and said horizontal roller being adapted to bend the strips of fiber sufficiently to allow the strips to enter said bending rollers.

4. In a machine for bending fiber the combination of a pair of feeding rollers, a

guide roller mounted loosely and parallel thereto behind said feed rollers to prevent the strips from buckling after leaving said feeding rollers, a stripper mounted below said guide rollers to guide the strips of fiber after leaving said feed'rollers, a pair of bending rollers in line with said feeding rollers, a pair of vertical conical rollers loosely mounted between said bending rollers and said feeding rollers, a horizontal roller mounted loosely between said vertical rollers, said vertical conical rollers and said horizontal roller being adapted to bend the ing rollers and said feeding rollers, a hori zontal roller mounted loosely between said vertical rollers, said vertical conical rollers and said horizontal roller being adapted to bend the strips of fiber sufficiently to allow the strips to entersaid bending rollers.

6. In a machine for bending fiber thecombination of a feed table, a pair of feeding rollers between which said feed table projects, said feed table having an inverted channel fastened to the top thereof to gage and guide the strips onto said feed rollers, a pair of bending rollers in line with said feeding rollers, idle rollers mounted to r0- tate between said feeding rollers and said bending rollers, said idle rollers being adapted to bend the strips of fiber sufficiently to allow the s rips to enter said bending rollers.

7 In a machine for bending fiber the combination of a pair of feeding rollers, a pair of bending rollers in line with said feeding rollers, a pair of vertical conical rollers loosely mounted between said bend ing'rollers and said feeding-rollers, a horizontal roller mounted loosely between said vertical rollers, said vertical conical rollers and said horizontal roller being adapted to bend the strips of fiber sufficiently to allow the strips to enter said bending rollers, yieldable bearings for one of each pair of said bending'rollers and means to adjust the pressure on said bearings.

8. In a machine for bending fiber the combination of a pair of feeding rollers, a air of bending rollers in line with said ceding rollers, apair of vertical conical rollers loosely mounted between said bending rollers and said feeding rollers, a horizontal roller mounted loosely between said vertical rollers, said vertical conical rollers and said horizontal roller being adapted to bend the strips of fiber-sufficiently to allow the strips to enter said bending rollers, yieldable bearings for one of each pair of said bending rollers, a casing mounted above said bearings, a rubber bufier mounted in said casing and resting against said yieldable bearings, means to increase or decrease the pressure on said rubber buffers.

In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES ENGLERT. Witnesses:

ERIC SCHINGER, EDNA K. BOOTH.

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