US1754335A - Cord machine - Google Patents

Description

A aril 15, 1930. HP. RUF 1,7 4,335

CORD MACHINE Filed Feb, 8, 1929 2 Sheets-Sheet 1 April 15, 1930. H. P. RUF 1,754,335

CORD MACHINE Filed Feb. 8, 1929 2 Sheets-Sheet 2 M &

Patented Apr. 15, 1930 HERMAN 1?. RUF, OF NEW YORK, N. Y.

CORD MACHINE Application filed February 8, 1929. Serial No. 338,425.

This invention relates to machines for making a twisted cord or bullion.

One object of the invention is to provide a device of the character described having improved means to assure a uniform feed of the several strands of which the cord is made.

Another object of the invention is the provision of a device of the nature set forth having improved combined drive features and strand guiding means.

Another object of the invention is to construct a device of the type mentioned which is reliable, rugged, and eflicient in use to a high degree particularly for making a cord having uniform and even characteristics.

Other objects and advantages of the invention will become apparent as the specification proceeds.

With the aforesaid objects in view, the 1n- 2 vention consists in the novel combinations and arrangements of parts hereinafter described in their preferred embodlments, pointed out in the subjoined clalms, and 1llustrated on the annexed drawing, wherein like parts are designated by the same reference characters throughout the several views.

In the drawing:

Figure 1 is a view in front elevation of a machine embodying the invention.

Fig. 2 is a view in side elevation of the same.

Fig; 3 is an enlarged top plan view of the unit for equalizing thefeed of the strands.

Fig. 4 is a vertical section taken on the line 4-4: of Fig. 3.

Fig. 5 is a top plan view of a drive pulley and guide.

Fig. 6 is a vertical sectional view taken on line 66 of Fig. 5.

The advantages of the invention as here outlined are best realized when all of its features and instrumentalities are combined in one and the same structure, but, useful devices may be produced embodying less than the whole.

It will be obvious to those skilled in the art to which this invention appertains, that the same may be incorporated in several different constructions. The accompanying drawing, therefore, is submitted merely as show stepped pulley 35 that is connected by a belt to manufacture an ornamental twisted cord.

The strands are individually twisted and then twisted together. Thus a plurality of spools may be used, which rotate about their own axes to twist the strands, after which the strands are twisted into a cord by a suitable fiyer. To maintain a uniform feed or tension on the individual strands so that the finished cord will be of wholly the same thickness throughout and entirely uniform in appearance, a plurality of friction rollers or idlers are provided separately engaging the strands and interconnected by a gear train or other rotative means to maintain a constant relative speed of the rollers so that the feed of the strands may be uniform. From the said rollers the'strands pass through a pulley, or the like, to the cord twisting eye, the said pulley being connected to actuate the fiyer.

Referring in detail to the drawing, 10 denotes a cord making machine embodying the invention. The machine includes a frame 11 having a main constant speed drive shaft 12 with loose and fixed pulleys 13 and 14. Mounted on the drive shaft is a fixed pulley 15, connected by a crossed belt 16 with a pulley 17 which is fixedly mounted on the vertical shaft 18. Thus the fiyer 19 is turned at a constant speed.

The fiyer 19 includes a support 20 carrying a plurality of inverted U brackets 21 separately rotatable about the stud shafts 22. In each bracket is rotatably mounted a spool 23, carrying strand 24, with which coacts a friction plate 25 pivotally mounted on the bracket at 26, and actuated by a coil spring 27, to retard the feed of the strand. To cause the spools to be rotated by their vertical shafts 22, the same are interengaged by a conventional gear train 28,which is operated by a central gear 29, driven by a shaft and pulley 30 and 31 respectively. The latter is connect- 'ed by a crossed belt 32 with a pulley 33 on a horizontal shaft 34. The shaft 34 carries a 36 with a coacting stepped pulley 37 on the 00 main shaft 12. By adjusting the belt 36 on the stepped pulleys, the speed of rotation of the spools about their shafts 22 can be varied to twist the individual strands to any required degree.

In practice, the plates 25 can not be relied upon to produce a uniform and even feed of the strands because the frictional engagement varies as the strands are fed from the spools, and the supply thereof on the latterdecreases or becomes uneven in diameter. Therefore, I provide an improved arrangement that will now be described.

On the shaft 18 is fixedly mounted a horizontal supporting member 38. On the latter are positioned a plurality of brackets 39 carrying each a friction feed member or rollor 40. This may assume various forms, but is preferably in the nature of a grooved idler having secured thereto a coaxial driver or gear 41 constituting a feed unit 42, one of which is supplied for each strand 24. The gears 41, which have horizontal axes, have teeth intermcshing with those of a gear 43 which is loosely journaled upon the shaft 18. After leaving the spools, the strands pass through eyelets 44 on the supporting plate 38, and thence to the rollers about which the strands are separately wound in the grooves thereof one or more times.

The pulley 17 has a plurality of holes 45 in the web thereof, through which the strands 24 from the rollers 40 se arately pass. The upper end portion 46 of t e shaft 18 is hollow at 47 and has a plurality of lateral holes 48 coacting with the holes 45 to receive the strands. The latter pass upward through the hollow 47 and are twisted at a conical point 48 in a well known manner. The cord 49 so made moves through a guide 50 that resiliently frictionally engages the cord to remove therefrom any loose fibers. Then the cord which is wound around a grooved roller 51, passes to an idler 52 on a shaft 52*, and thence between a pair of rollers 53, 54 between which the cord is frictionally engaged, to a can 55.

The roller 51 is fixedly mounted on a'shaft 56 that carries a worm wheel 57 which is rotated by a worm 58. The latter is positioned on a shaft 59 carrying a roller 60 that frictionally engages an adjustable disc drive 61, driven by the main shaft 12.

Mounted on the shaft 56 is a pulley 62 that is connected by a belt 63 with a pulley 64 that rotates the roller 54 and its frictionally engaging pulley 53.

By this construction tension is exerted on the cord and hence on the strands 24, causing the feed of the latter, which is rendered uniform by the units 42.

The can 55 may rotate very slowly to cause an even piling of the cord therein. For this purpose the said can is mounted on a rotatable support 65 that is driven by an ad ustable friction disc drive 66. The latter is operated by a pulley 67 on a shaft 67, connected by a belt 68 with a pulley 69 on the main shaft 12.

I claim:

1.. A cord making machine comprising a flier, a plurality of strand carrying spools rotatably mounted thereon, means to twist the strands into a cord, means to equalize the feed of the strands from the separate spools, the last mentioned means including separate friction rollers for the strands, and gears interengaging said rollers to cause them to rotate at constant ratio, a main drive for the flier, a gear train interconnecting the spools to rotate the same, a second drive connected to the main drive for operating the gear train, said second drive being adjustable to vary the speed of rotation of the spools, a can for receiving the finished cord, a rotary support for the can, and means to rotate said support.

2. A cord making machine comprising a flier, a plurality of strand carrying spools rotatably mounted thereon, means to twist the strands into a cord, means to equalize the feed of the strands from the separate spools, the last mentioned means including separate friction rollers for the strands, and gears interengaging said rollers to cause them to rotate at constant ratio, a main drive for the flier, a gear train interconnecting the spools to rotate the same, a second drive connected to the main drive for operating the gear train, said second drive being adjustable to vary the speed of rotation of the spools, means to pull the finished cord through the machine adjustably connected with the mam drive, a can for receiving the finshed cord, a rotary support for the can, and means to rotate said support.

In testimony whereof I aflix my signature.

HERMAN P. RUF.

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