US3026596A

US3026596A - Raising or napping machine

Info

Publication number: US3026596A
Application number: US688999A
Authority: US
Inventors: Kuppers Josef; Schultheiss Alfred
Original assignee: MUELLER FRANZ FA
Current assignee: FRANZ MULLER Firma; MUELLER FRANZ FA
Priority date: 1956-11-15
Filing date: 1957-10-08
Publication date: 1962-03-27
Anticipated expiration: 1979-03-27

Description

March 27, 1962 J- KUPPERS ETAL 3,026,596

RAISING 0R NAPPING MACHINE Filed Oct. 8, 195'? 3,026,596 Patented Mar. 27, 1962 hce 3,026,596 RAISING OR NAPPING MACHINE Josef Kappers and Alfred Schultheiss, Manchen-Giadbach, Germany, assignors to Firma Franz Muller, Mencken-Gladbach, Germany, a corporation of Germany Filed Oct. 8, 1957, Ser. No. 688,999 Claims priority, application Germany Nov. 15, 1956 1 Claim. (Cl. 26-35) The present invention relates to a raising or napping machine.

In order to achieve a good raising eifect in napping machines, a correct adjustment of the number of revolutions for the raising rollers is of greatest importance.

It is customary to drive the raising rollers with a constant number of revolutions in the known raising or napping machines, while the speed of the cloth is variable. lt is of importance herein that at each speed of the cloth the neutral number of revolutions for the raising rollers is exactly known or is announced, it being understood that the neutral number of revolutions is the speed at which the raising rollers pass the cloth at a predetermined speed of the cloth without, however, performing any work. Any work and a raising eiiect of the raising rollers sets in only then, when, for instance, in the machine the number of revolutions of the pile rollers is smaller and that of the counter-pile rollers is larger than the neutral number of revolutions. The greater the diiference between the number of revolutions of the raising rollers and the neutral number of revolutions, the greater is also the raising eifect. Since, however, a practical raising effect moves within narrow limits, it is possible to use for the adjustment of the number of revolutions of the raising rollers a control device having a small control range, if the neutral number of revolutions would be constant for all speeds of the cloth. This is, however, impossible for the reason that the neutral number of revolutions of the raising rollers changes with each change of speed of the cloth.

It is, thus, found, that upon increase of the speed of the cloth the elect of the pile rollers is diminished and the effect of the counter-pile rollers is increased, which requires an after-adjustment, in order to bring about again the same raising effect. In order to permit an exact and careful adjustment, indicating scales with corresponding correction is by all means required. An attempt has been made already, to control automatically the adjustment of the number of revolutions of the raising rollers by means of proper gear drives dependent upon the cloth speed, which expedient requires, however, rather complicated drive units. With all past attempts, the drawback remains, however, that a much too large control range of the control device is required, which turned out to be unfavorable, since the quality of the napped cloth depends substantially upon the small-step control, that means, the smaller the control range of a drive, the iiner the control which is possible and the better is the napped cloth.

It is, therefore, one object of the present invention to provide a raising or napping machine which overcomes the drawbacks of previously known machines.

It is another object of the present invention to provide a raising or napping machine, wherein the drum is driven by a control device having stepwise or endless speed control, whereby with each change of the number of revolutions of the drum, the speed of the cloth changes simultaneously in proper relation thereto. Upon changing the speed of the cloth, the basic number of revolutions of the raising rollers changes likewise in the same proportion, so that an additional adjustment of the neutral number of revolutions is no longer required.

It is still another object of the present invention to provide a raising or napping machine, wherein the control ranges of the control devices for the pile rollers and for the counter-pile rollers are held extremely small, whereby a very line adjustment of the raising effect is made possible. This adjustment remains unchanged, even it' the speed of the cloth changes.

With these and other objects in view, which will become apparent in the following detailed description, the present invention will be clearly understood in connection with the accompanying drawing, in which:

FIGURE 1 is a schematic cross-section of a raising or napping machine with a drum having pileand counterpile rollers; and i FIG. 2 is a top plan view thereof, together with a schematically shown drive.

Referring now to the drawing, the present machine comprises a drum 10 which is driven by a motor 11 over a control drive l2, 13 with a corresponding control range, the adjustment of which may be achieved by means of a manually operated wheel 14. A PIV-drive, an oil drive or the like may be used for the control drive 12, 13.

The drive of the feeding rollers 15, 16 for the fabric or cloth originateswith the axle of the drum 10 over a drive 17, 18 and 19, so that the speed of the fabric changes with each change of the number of revolutions of the drum l0. The tine differentiation of the number of revolutions between the rollers 15 and 16 is not shown in the drawing, because the present invention is not concerned with this matter.

A small gear or spur gear 20 is likewise driven by the axle of the drum 10 over a control drive 21, 22, which small gear 20 meshes with a large gear or ring gear 23 which is rotatably mounted on the bearing neck of the drum 10. This constitutes the drive for the pile rollers. The wedge belts which circularly surround the napping rollers 24, 25 are secured to the gears 23 in known manner by belt-tensioners, which wedge belts supply the required additional number of revolutions to the pile and counter-pile rollers 24, 25, respectively, due to the opposite direction of turning by the large gears 23. This is brought about for the counter-pile rollers 25 by means of a control drive 26, 27.

The raising energy once set by the hand wheels 28, 29 for the

drives

21, 22 and 26, 27 remains the same for both sets of rollers even upon change of the speed of the fabric, so that the known complicated and expensive indicating or balancing devices are eliminated. The set raising energy is rather visible on scales of the hand wheels 28 and 29.

As set forth above, the shown and described embodiment is merely an example for the application of the present invention and is not limited thereto, rather several other embodiments and applications are possible Within the scope of the present invention.

While we have disclosed one embodiment of the present invention, it is to be understood that this embodiment is given by example only and not in a limiting sense, the scope of the present invention being determined by the objects and the claim.

We claim;

In a napping machine,

a main shaft,

a drum mounted on said shaft and rotatable therewith,

a plurality of pile rollers and a plurality of counter-pile rollers being alternately disposed on said drum and rotating by a planet motion with the latter,

a pair of cloth feeding rollers disposed adjacent said drum,

means for driving said drum with adjustable speed,

means for driving said cloth feeding rollers, said pile rollers and said counter-pile rollers from said main shaft permitting a change of the speed of said cloth feeding rollers, of said pile rollers and of said counterpile rollers at the same ratio at which the speed of said main shaft is changed,

a first control means for adjusting the speed of said pile rollers and a second control means for adjusting the speed of said counter-pile rollers,

each said control means driving its respective rollers through a ring gear provided therefor and rotatably mounted on said main shaft, and

each ring gear engaging a spur gear driven from a corresponding one of said control means, whereby the napping etect may be adjusted.

References Cited in the le of this patent UNITED STATES PATENTS Scholaert June 14, Dourdeville Mar. 27,

FOREIGN PATENTS France Apr. 13, France Apr. 4, Great Britain Great Britain Great Britain Great Britain Sept. 24, Great Britain Sept. 2, Great Britain June 6.