US372771A - Carding-machine - Google Patents

Description

(No Model.)

2 Sheets-Sheet 2.

D. SENIOR & H. PITTON.

GARDING MACHINE;

No. 372,771. Patented Nov. 8, 1887.

WITNESSES= WM? By their Attorney,

N. PETERS. rnum-um m h r, Washingfumfl. c

V UNITED STATES PATENT tries.

DAVID SENIOR AND HOBSON FITTON, OF MADISON, INDIANA.

CARDlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 372,771, dated November 8, 1887.

Application filed October 8, 1886.

To all whom it may concern.-

Be it known that we, DAVID SENIOR and HOBSON FITTON, both citizens of the United States, and residents of Madison, in the county of Jefferson and State of Indiana, have invented certain new and useful Improvements in Carding-Machines, of which the following is a specification.

Our invention relates to improvements in machines for carding fibers-notably wool and cottonbeing applicable to .both breaker and finisher cards; and the object of our invention is in part to provide means for keeping the wire teeth of the doffers always clean and sharp, whereby the machine is enabled to pro duce uniformly good work from coarse or inferior stock and yield better results as to quantity, and in part to provide means for preventing the bottom doffer of the finisher-card from catching the long coarse fiber pendent from the sliver or roving above, and thus breaking it down, and for pressing and smoothing the sliver on the doffer.

Our invention consists, in part, in providing a carding-machine with a toothed stripper-roller set above the doffer and its teeth arranged to pass between the wire teeth of the doffer and to rub against the same, said teeth being bent so as to incline forward or in the direction of the rotation of said roller, and said roller being setquite close to the main carding-cylinder, but out ofcontact with same, or so that their respective teeth do not intersect.

Our invention also consists, in part, in providing a finisher-card with a smooth roller arranged under the top doft'er and close to the main cylinder, which roller prevents the bot tom doffer from catching fibers pendent from the sliver on the upper doffer and breaking it down. This roller also smooths and presses the fiber on the doffer close and straight, and thus aids in producing an even and smooth I sliver.

In the drawings, which serve to illustrate our invention, Figure 1 is an outline diagram of a finisher-card,,showing the position of the parts embodying our invention as applied thereto. Fig. 2 is a similar view of a breaker-card, showing the position therein of Serial No. 215,685. (No model.)

the part embodying our invention. Fig. 3 is a view, on a larger scale, of a part of a finisher-card provided with our improvements. Referring first to Figs. 1 and 3, wherein our improvements are shown applied to a finishercard with-top and bottom doffers of the ordinary construction, A represents the main cylinder; B, the fancy or raiser, G, the top doffer, and O the bottom doft'er, each doffer making a separate roving or sliver; These, as well as the other parts of the finisher seen in Fig. 1, but not referred to, may be constructed and driven in the usual way. It is well known by those who are accustomed to work carding-machines that the teeth of the doffer quickly become dirty and dull, especially when working coarse or. low stock, and require to be frequently cleaned and ground. They will also, when not kept in good working condition, produce an uneven and irregular roving, and consequently an uneven yarn. To obviate this defect, we mount over the top dofier, O, a stripper-roller, D, which hasteeth which pass between the wire teeth on the doifer, but do not interlock or engage the same.

We usually cover the roller D with ordinary card-clothing, in order to provideit with teeth; but metal teeth of a similar character of any kind will serve. These teeth are bent so as to incline forward in the direction in which the roller D rotates, as seen in Fig. 3; or, in other words, they are arranged in a manner similar to the teeth on the main cylinder A. ihese teeth do not intersect the teeth on the main cylinder, but only those on the dofi'er. The roller D revolves in the same direction as the doffer, and the teeth on said roller pass between the teeth on the doffer and in rubbingcontact therewith, whereby they serve to clean and sharpen the teeth of the doffer and keep the latter in a'uniformly good working condition.

We arrange the roller D close to the main cylinder A, as shown, in order that it may transfer the fiber taken trom the dofi'er to the cylinder. The roller D is driven positively, and it may be driven from the doffer-shaft by toothed gearingor by a belt.

In Fig. 3 the dotted circles a a represent the pitch circles of gear-wheels on the defferaxis and roller-axis, respectively, and the dotted circle I) represents the pitch circle of an intermediate gear-wheel. These gears will drive the roller D with a speed about twenty per cent. greater than the speed of the dofi'er.

The bottom dofl'er, G, is provided with a stripper-roller, D, which is constructed and operates in precisely the same way. as the roller D. Therefore it will need no further description.

Below the top doffer, O, is arranged a smooth roller, E, which we call a protector roller or smoother. This roller is so placed as to be in peripheral contact, or nearly so, with the tips of the teeth on the doffer, and it stands quite close up to the main cylinder. Its function is to prevent the long fibers from the sliver from hanging down and being caught in the teeth of the bottom doii'er, O, which would break down the sliver. Said roller also presses upon and smooths and evens the sliver taken off by the top doffer. \Ve have shown the machine provided with but one roller, E, and that arranged under the top doffer; but so far as the pressing and smoothing of the sliver is concerned, a similar roller might be placed under the bottom doffer also with like good results. \Ve prefer to give the roller E a little greater peripheral speed than that of the doffer.

The proportionate sizes of the strippcrrollers D D and the protector-roller E with respect to the size of the doffer is not very important. \Ve will say, however, that we usually make the stripper-rollers about three inches in diameter and the protector-roller the same,or a little less, according to the room or space in the machine.

Fig. 2 shows the application of our stripperroller D to a breaker-card. As the construction, arrangement, and operation are precisely the same as that already described with ref erence to the finisher-card, no further description of this application of it will be necessary.

The roller E may be used to advantage on the breakencard, as seen in Fig. 2, where it serves to prevent the fiber from flying off the cylinder and smooths down the sliver.

Having thus described our invention, we claim '1. In a earding'maehine, the combination, with the main cylinder and doffer arranged in the usual manner, of a stripper-roller mounted over the doffer and positivelydrir en in the same direction as the doffer, said roller having card-teeth bent or inclined forward in the direction of its rotation, and said teeth intersecting the teeth on the doffer, but not those on the main cylinder, substantially as described.

2. In a finisher-card, the con'ibination, with the main cylinder A and the top and bottom doffers arranged in the usual manner, of a smooth roller, E, arranged under the top doffer and in peripheral proximity thereto and close to the main cylinder A, substantially as and for the purposes set forth.

8. In a finisher-card, the combination, with the top doffer, C, and bottom doffer, C, of the toothed stripper-roller D, with its teeth in rubbing contact with the teeth on the dofier C, the stripper-roller D, with its teeth in rubbing contact with the teeth on the dofit'er G, and the smooth roller E, arranged under the top doffer and in peripheral proximity thereto, substantially as set forth.

In witness whereof we have hereunto signed our names in the presence of two subscribing witnesses.

DAVID SENIOR. HOBSON EITTON.

\Viincsses:

J urns J. Same, REUBEN Truce.

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