US2324668A - Machine for making twisted paper - Google Patents

Description

`uly 20, 1,943;

l L F. BARNUM MACHINE FOR MAKING TWISTED `PMER Filed Jan. 23, 1942 2 sheets-sheet 1 July 2o, 1943. L. BARNUM 2,324,668

MACHINE FOR MAKING TWISTED PAPER Filed Jan. 25. 1942 2 sheets-shex 2 i :Snnentor l Zes//e QT/uzy a single rotation of the 'loop around the Patented July 20, 1943 Application January 23. 1942, serial No. 427,852 11 claims. y misi- 31) -This invention relates to machines and methods of making cordage and in particular to such machines and methods for making twisted paper cordage or thelike.

One object of this invention is to provide a machine for making twisted cordage wherein the and around a power-driven winch and on to a take-up reel. In this manner the paper tape is ,l given two twists for a single rotation of the frame material receives two twists for every rotation of A `the apparatus.

Another object is to provide a machine and i method for making twisted cordage wherein material in tape or ribbon form is arranged in a loop l extendingaround the supply of material, the latter being kept substantially stationary while the former is rotated. y

Another object is tov provide `a machine and method for making twisted cordage as set forth in the preceding object wherein the supply of tape or ribbon material is stationarily mounted `on the axis of rotation and the loop follows a path from the supply first along the axis of rotation, then follows a path toone side ofthe supply and returns to the axis of rotation in apath e extending in the opposite direction from the first portion of its pathalong `the axisof rotation, thereby imparting two twists to the materialfor supply.

' In the drawings:

Figure 1 is a side elevation, partly in section,

Y of a preferred embodiment of the cordage making machine of this invention `and of one form of apparatus bywwhich the method of the invention may be performed.

Figure 2 is a horizontal section taken along the line 2-2 in Figure 1.

Figure 3 is a vertical cross-section taken along the line 3,-3 in Figure 1.

Figure 4 is a vertical cross-section taken along the line 4-4 in Figure 1.

Figure 5 is an enlarged perspective viewof the first twister of the machine; l

Figure 6 is a horizontal sectiontaken along the line 6 6 ofFigure l, showing the second twister.

In general, the cordage making machine of this invention consists of a rotatable frame having asup'ply of material stationarily supported at `its axis of rotation.` Thematerial is preferas well as smoothing the convolutions thereof upon emergence from the frame, thereby providing a superior cordage at a low cost. The method of making cordage consists broadly 'of leading the tape from a supply along the axis of rotation, then rearwardly in a loop around the supply and again along the axis of rotation inthe opposite direction, and rotating the loop around the supply. This causes two twists to be imparted tothe tape for every rotation ofthe loop.` i

Referring to the drawings in detail, Figures 1 and 2 show a preferred embodiment of the machine of this invention as including a; vframe I0 having uprights I I interconnected by lower hori- Vzontal members I2, upper horizontal members I3 and cross members I4. Mounted upon bracket members I5 and IB secured to one end of the frame I0 is an electricl motor Il` having a motor shaft I8 connected to a drive shaft I9 ,through a ablypaper in the form ofV a rollojf ribbon or tape. i

" "This tape is led from the rollthrough a die forming a twisterpoint and over `pulleysuto form a loop `passing beside the.rll"and returning to the axis of rotatiiiri around another pulley. The twisted tape passes from this last pulley along the axis of rotation in the opposite directionfrom its first path, proceeding through a forming and smoothing die member at another twisting point fr'ame 40 is a second longitudinal bore 4I which is threaded to receive the threaded end of the i die forming and smoothing member 42 having a coupling 20. The drive shaft I9 in turn is se` cured asat 2l within a bore 22 in a rotatable frame 23. "The shaft I9 isrotatably supported in anti-friction bearings 24 mounted upon one of the cross members I4 and held by the bearing bracket 25 secured thereto as at 26. The frame `23 consists of endportions 21 and side portions 28 forming a rectangle. It will be evident, however, that anytype of open frame may be used,

such as a circular or oval frame.

The bore 22 is formed in a boss 29 which projects axially toward/the motor I1, the boss 29 being integral with the frame 23. The opposite end of the frame 231s similarly provided with an integral boss 30` extending in the opposite direction and having a bore 3| with a tubular shaft 32 secured therein as at 33. The tubular shaft 32 is rotatably supported upon anti-friction bearings 34 mounted in the bearing bracket 35 secured as at 36 to the middle cross-member I4.

The tubular shaft 32 is provided with alongitudinalbore 31 having a bell-mouthed entrance 38. Mounted on the tubular shaft 32 is a drive sprocket 39* and `adjacent the sprocket 39 is mounted a rotatable frame 40 having a longitudinal bore 40a.for receiving the end of the tubular shaft 32. `Coaxial with the bore 40a in the bell-mouthed bore 43 (Figure 6). 'I'he sprocket 39 drives a sprocket chain 44 which in turn drives a sprocket 45 mounted upon the shaft 46 (Fig. 1) The latter is supported in brackets 41 and 48 at its opposite ends. Mounted on the shaft 46 is a bevel gear 49 meshing with a bevel gear 50 mounted upon a vertical shaft supported at its opposite ends in brackets 52 and 53. The upper end of the shaft 5| carries a winch 54 around which the cordage is passed on its way to a take-up reel 55.

The take-up reel 55 is secured as at 56 to a shaft 51 mounted in a bracket 58 on an arm 59 secured to one of the cross-members I4. The shaft 51 on its opposite end carries a pulley 60 engaged by a coil spring 6| seated against a nut 62 threaded upon one end 63 ofthe shaft 51. The pulley 60 is driven by a belt 64 from a pulley 65 mounted upon a shaft 66. The latter is rotatably mounted in a bracket 61 on an arm 68 secured to the frame I0 (Fig. 2) and at its opposite end carries a bevel gear 69 meshing with the bevel gear 50. (Fig. 4.) The brackets41, 48 and 61 are mounted upon lower cross-members 1 0 (Figs. 3 and 4).

The frame 23 is also provided with a pair of inwardly projecting integral bosses 1| and 12 (Figs. 1 and 2) having sockets 13 and 14 respectively accommodating anti-friction bearings and 16 (Fig. 1). The anti-friction bearings 15 and 16 support the hubs 11 and 18 of depending arms 19 and 80. The armsl 19 and 80-are provided with slots 8l which accommodate cap screws 82 entering threaded bores 83 in the downwardly projecting portions 85 `of the material holder 86. The portions 85 are provided with guide grooves 81 within which the arms 19 and 80 are slidable relatively to the material holder portions 85 for adjustment purposes.

The hub 11 of the arm 19 is further provided with an axial bore 88 which accommodates the die member 89 having a bell-mouthed bore 90 to facilitate passage of the tape or strand of cord 9|.

The material holder 86 isprovided with a central transverse bore 92 within which is mounted a shaft 93 having an upwardly extending enlarged portion 94 on one side thereof and a downwardly extending reduced portion 95. The latter carries a counter-weight 96 secured thereto by the v nut 91 threaded upon the lower end of the shaft portion 95 which passes through a bore 98 therein. The enlarged shaft portion 94 serves as a spindle to receive a collar 99 for retaining the roll of material |00 in position upon the material holder 86. The material holder 85 is also provided with a guide pin |0| for directing the tape 9| into the first twister 90.

Beyond the first twister 90 the now twisted `strand 9| passes over a pulley |02 mounted upon a'shaft |03 in a recess |04 within the boss 1|. 'I'he strand or cord 9| continues parallel to the frame end 23 and then passes over a pulley |05 mounted upon a shaft |06 held by the ear. |01, after which it continues parallel to and along one of the sides 28 over a third pulley |08 similarly mounted upon a shaft |09 supported by an ear |0 extending inwardly from the frame 23. Beyond the third pulley 08 the cord 9| passes around a fourth pulley mounted upon a shaft ||2 mounted within a recess |3 in the boss 12 of the frame 23. Beyond the fourth pulley the cord 9| passes through the bore 31 in the tubular member 32 and thence through the second twister 42, around the winch 54 and onto the take-up reel 55.

In the preparation of the machine for operation, a roll |00 of paper or other suitable material preferably in tape or ribbon form is mounted upon the shaft 94 of the material holder 88 and secured in place by means of the collar 89. ,The holder 96 is adjusted up or down until the center line of the material strip or cord 9| coincides ap- Y proximately with the axis of the bore 80. The strand or cord 9| is then twisted and threaded through the bore of the die member 89 by hand, passed around the pulleys |02, |05, |08 and thence throughy the bore 31 in the tubular shaft 32 and finally through the bore 43 of the forming and smoothing die member 42, passing several times around the winch 54 and onto the supply reel 55. With the machine thus adjusted, it is ready for operation.

In the operation of the machine and in the practice of the method the motor I1 is caused to rotate the frame 23 while the counter-weight .88 maintains the material holder 86 in a substan die member 89 and around the first pulley |82 it receives a first twist for every revolution of thel frame 23. After it has passed around the pulleys,A`v |05, |08 and and through the second twister 43 it receives a second twist for every revolution of the frame 23. 'I'he bell-mouthed portionsof the die members 89 and 42 facilitate passage of the cord 9| through the bores thereof. In this manner there has been provided a machine and method for making cordage from ribbons or tapes of paper or other suitable material wherein the cordage is twisted twice for every revolution of its loop. By this double twisting the cord is packed more tightly and given a greater strength at a lower cost of production.

While a specific embodiment of the invention has been described and illustrated, it will be understood that various modifications may be made within the scope of the appended claims without departing from the spirit of the invention.

What I claim is:

'1. In a machine for making twisted cordage, a rotatable frame, va holder for a supply of material in flat strip form, means for guiding the strip from said supply in a path forming a loop within the confines of said frame and including the axis of rotation of said frame, means for rotating said frame at one end thereof, means for feeding said material from` said supply through said loop and die forming means at the other end of the frame for frictionally engaging the strand and for smoothing the convolutions thereof to impart a ,further twist thereto between the frame and feeding means.

2. In a machine for making twisted cordage, a rotatable frame, a holder for a supply of material in a path forming a loop within the confines of said frame and including the axis of rotation of said frame, means for rotating said frame at one end thereof, means for feeding said material from said supply through said loop in a path emerging from said frame along said axis of rotation and die forming means at the other end of the frame for frictionally engaging the strand for smoothing and forming the convolutic-ns thereof and to impart a further twist thereto between the frame and feeding means.

g 3. In a machine for making twisted cordage, a rotatable frame, a holder for a supply of material in strip form, means for guiding the strip from said supply in a path forming a loop within the confines of said frame and including the axis ofrotation of said frame, means for rotating said frame at one end thereof, means for feeding said material from said supply through said loop,`

and die forming means at the opposite end of the frame for grasping said strand to facilitate smoothing of the twisted convolutions ofy said strand andfor twisting at a 'location along said axis of rotation between said die forming means i and feeding means.

4. In a machine for making twisted cordage, a rotatable frame, a holder for a supply of material in relatively flat strip form, means for guiding the `strip from said supply in a path forming a loop within the confines of said frame and including the axis of rotation of said frame, `means f for rotating said frame at one end thereof, means for feeding said material from` said supply through said loop in a path emerging from said frame along said axis of rotation, and die forming means at the opposite end of the frame for frictionally gripping said strand to facilitate i thereof,means for feeding said material from said supply through said loop ina path emerging from said frame along said axis of rotation, and means for. frlctionally gripping said vstrip at a location along said axis of rotation adjacent said supply and also along said axis of rotation be' tween the feeding means and frame in said emerging path at the opposite end of the frame whereby to facilitate twisting at two separate locations near the beginning and end of said path.

6. In a machine for making twisted cordage, a rotatable frame, a holder for a supply of material in relatively flat strip form, meansfor guiding the strip from said supply in a path Vforming a loop about and within the confines of lsaid frame and including the axis of rotation of said frame, means for rotating said frame at one end thereof, means for feeding and tensioning said material from said supply through said loop at the `point where the supply enters the loopA adjacent the rotating means, means for maintaining said supply substantially stationary during the rotation of said frame and an annular forming die between the feeding means and frame for smoothing and pressing the convolutions of said strip by ,drawingthe strip therethrough.

7. In a machine for makingtwisted cordage. a rotatable frame. a holder for a supply of material in strip form, means for guiding the strip from said supply in a path forming a loop about and within the confines of said frame and including the axis of rotation of said frame, means for rotating said frame at one end thereof, means for feeding said material from said supply through said loop, die forming means for gripping the strand as it emerges fromsaid loop said feeding means including a rotatable drum around which said strand is wound, means for driving said drum and said die forming gripping means including a rotatable head through which the,

strand passes before being wound on said drum whereby the convolutions of said strip will be tightly pressed together` 8. In a machine for making twisted cordage, a rotatable rectangular frame, a holder for a supply of material in relatively flat strip form in alignment with the axis of the frame, means `for guiding the flat strip from said supply in a path forming a loop about and within the confines of said frame and including the axis of rotation of said frame', `means `for rotating said frame at one end thereof to impart a twist thereto, means Vfor feeding said material from said supply through said loop in timed relation with the rotation of the frame, said feeding means including a rotatable drum around which said strand is wound, a rotatable twisted strand receiving forming die member located at the end of the frame in opposed relation with the frame rotating means and means for connecting the strand receiving member for rotating the feeding means whereby said twisted strand will be formed and pressed with its convolutions in closely compact relation.

9. In a machine for making stranded cordage from tape material, a rectangular frame rotatable about an axis, a material holder supported within said frame in alignment with said axis, means for impeding rotation of said holder, means for guiding said tape material from said holder in a loop about and within the confines of one side of said frame, and a forming vdie member arranged to press and smooth said tape material as it emerges from said frame said forming die member being rotated in unison with the framei l0. In a machine for making stranded cordage from tape material, a rectangular frame rotatable about an axis, a material holder supported VWithin said. frame in alignment with said'axis, means for impeding rotation of said holder, means for guiding said tape material from said holder along said axis in a loop about and within the confines of one sideof said frame and outward along the same axis but in-the opposite dixection and a die member positioned at the emergenceend of the frame along the axis of rotation thereof for tightly pressing the convolutions of said tape upon 'one another after the tape is twisted.

11. In a machine for making stranded cordage from tape material, a rectangular frame rotatable about an axis, a strip material holder supported within said frame in alignment with the axis thereof, means for impeding rotation of said holder, means for guiding said tape material from the frame along 'the axis of rotation thereof fortightly'pressing the convolutions of said tape the tape is twisted.

upon one another after IESLIE F. BARNUM.

Images