US718130A

US718130A - Feed mechanism for carding-machines.

Info

Publication number: US718130A
Application number: US11803602A
Authority: US
Inventors: Harry Kemp
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-08-02
Filing date: 1902-08-02
Publication date: 1903-01-13
Anticipated expiration: 1920-01-13

Description

h- 718,130? PATENTED JAN. 13, 1903.

H. KEMP. FEED MECHANISM FOR CARDIN-G MACHINES.

, APPLICATION FILED AUG. 2, 1902.

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No. 718,130. PATENTED JAN. 13, 1903.

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FEED MECHANISM FOR GARDING MACHINES.

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No. 718,130. ,PATENTBD JAN. 13, 1903. p H. KEMP.

FEED MECHANISM FOR GARDING MACHINES.

APPLICATION FILED AUG. 2, 1902.

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' NTTED STATES PATENT OFFICE.

HARRY KEMP, OF NEWTON, MASSACHUSETTS.

FEED MECHANISM FOR CARDlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 718,130, dated January 13, 1903. Application filed August 2,1902. Serial No. 118,036. (No modeL) To all whom it may concern:

Be it known that I, HARRY KEMP, a subject of the King of Great Britain, and a resident of Newton, in the county of MiddleseX and State of Massachusetts, have invented new and useful Improvements in Feed Mechanism for Carding-Machines, of which the following is a specification.

My invention relates to feed mechanisms for carding-machines of the general type illustrated and described in United States Letters Patent No. 667,708, granted to me February 12, 1901; and it consists in certain improvements which by an improved mode of mechanical application accomplish a result in part analogous to that whichis accomplished by and described in connection with my inventions and improvements illustrated and described in United States Letters Patent No. 701,487, granted to me June 3, 1902.

My present invention has for its object the provision of new and improved means whereby feed-rolls of graded diameters may be applied to the hubs of actuating-gears without necessitating change of the said gears and whereby also the separating movements of any of the said rolls, due to the passage between them of stock of different thicknesses or of varying thickness, is prevented from interfering with the proper interaction of the actuating-gears.

In carrying out this invention I employ a pair of roll-actuating gears and so proportion and modify the gears as to accomplish the foregoing objects without requiring the employment or intervention of any additional mechanism.

In the drawings hereto annexed and which illustrate my present invention, Figure 1 shows in plan view a feed mechanism containing my improvements. Fig. 2 shows in perspective two feed-rolls ofdifferent external diameters. Fig. 3 shows the feed mechanism in longitudinal elevation. Fig. 4 shows, on an enlarged scale, the details of the feed-rollactuatingmechanism; and Fig. 5 shows the said feed-roll-actuating mechanism in crosssection through line w a: of Fig. 4. Fig. 6 is a detail showing a form of gear suited for use in my feed mechanism.

A detailed description of the construction and operation of the principal parts of the substantially the same as the similarly-let tered parts in the two said patents.

The functions and operation of the feed mechanism as a whole are substantially the same as those of the mechanisms described in the said patents, and I therefore pass at once to a description. of the improvements which constitute my present invention.

It is highly desirable to provide a feed mechanism of the general character above recited with means whereby the rate of feed of the stock or sliver may be changed or graded to satisfy varying requisitions and conditions. Change in the feed-roll-actuatin g gears for thispurpose has been suggested, but in practice is inconvenient and ineffective, unless unusually complicated constructive provisions are made. In order to accomplish this result, I provide a number of change feed-rolls of graded external diameters in pairs, such as L L, Figs. 2 and 5. The hubs or spindles I I, which are secured to the actuating-gears S S, correspond in external diameter with the internal diameters of the rolls L L, which are invariable, no matter what may be the dimensions of their external diameters. Binding-screws s s serve to attach the feed-rolls to the hubs or spindles I. The variations in the diameters of the changerolls L L enable the operator to grade the rate of feed of stock to suit his varying purposes.

Referring to Figs. 4 and 5, the mechanical improvements and arrangements whereby I am enabled to utilize any one of a number of graded pairs of feed-rolls without altering the train relation of the actuating-gears are shown in detail. One or the other of the gears S S is in mesh with the rack K and derives movement therefrom by reason of' the traverse of the slotted carrier or traveler E and imparts movement to the other gear, which is removed from direct mesh with the said rack. The gears S S are mounted, respectively, upon studs C 0, provided with the shoulders F F, which in turn are mounted on the carrier and slide in guides H H, which are pivoted in the rocking plate G, and spiral springs f f, adjusted by screws h h, exert their pressure upon the shoulders F F, and thus urge the gears S S always toward their position of most intimate mesh. The springs ff are centered and properly held in operative position against the shoulders F F of the studs 0 O by the pinsjj, fitted within suitable pockets in said shoulders, and provided with mandrel-like projections and 70. Obviously, if desired, one or both of the springsff could be omitted and the sliding studs 0 0 could be adjusted in their guides at any desired degree of separation and held in adjustment by set-screws, or one of the studs could be stationary and the other adjustable. In Fig. 4 the gears S S are shown as pressed together about one-half the length of the teeth, as when a medium-sized pair of change-rolls L L is mounted on the mechanism and no stock or sliveris being fed thereby.

In Fig. 6 I have shown a detail of actuating-gears having teeth S and S adapted to permit a wide range of convergence and divergence of the gear-axes and still insuring a rolling rather than a frictional contact between the surfaces in contact. The circular spaces 8 between the teeth afford room for the teeth to move unrestrained when the gears are close together, and the curved sides of the teeth effect a rolling contact. While this or other special forms of gear-teeth may be desirable, 1 do not limit the scope of my invention to any particular form of gearteeth. Any form of elongated gear-teeth which will remain in mesh and operate whatever the distance between t-he gear-axes within predetermined limits is within the scope of my invention.

The axes of the studs 0 0 stand with relation to each other at or between two extremes of separation, being nearest to each other when the smallest pair of graded feed-rolls is applied and no sliver intervenes between the same and farthest from each other when the largest pair of feed-rolls is applied and when the heaviest stock or sliver is passing between the said rolls. When all the desirable rates of feed speed and all the usual graduations and variations in the weight of stock are taken into account in the design and proportion of the feeding attachment, these two extremes of separation are so far apart that a special modification of the gears S S is resorted to in order to insure the maintenance of mesh between the same at and between both of these extremes of separation. The ordinary gearsuch, for instance, as is shown in my two patents above mentioned-is incapable of fulfilling this condition, and I have heretofore adopted the coutrivances shown in my Patent No. 701,487 to insure the maintenance of train relation between the driving and driven feed-roll gear. My present improvement, however, is characterized by the direct application of gear modification to the feedroll gears themselves. I construct the feedroll gears S S with teeth of unusual length, modifying the usual shape even to a degree which may be regarded as distortion, and make them of such pitch or separation from each other that the intermeshing teeth of the gears will enter and leave the tooth-spaces when the two gears are in their most intimate mesh and so that also the widest extreme of separation between the gear-studs O C will be incapable of entirely withdrawing the two sets of interacting teeth from mesh with each other. The length of the teeth, and consequently the depth of the tooth-spaces of the gears which I employ in the construction of my improvements, is equal to or greater than the distance between the extremes of separation of the gear-axes, represented in this case by the studs 0 C. If this condition or rule is observed in the construction of the feed mechanism herein first employed, the operation thereof will be continuously satisfactory.

What I claim, and desire to secure by Letters Patent, is-

1. In a feed mechanism for carding-ma chines of the character described, the combination of a traveler, actuating mechanism therefor, a rack, a pair of gears in train mounted in yielding hearings on the traveler, and means whereby said gears will engage the rack one at a time, said gears being adapted to receive and carry feed-rolls of various dimensions, substantially as described.

2. In a feed mechanism for carding-machines of the character described, the combination of a traveler, actuating mechanism therefor, a rack, a pair of gears in train mounted on the traveler and capable of movement toward and from each other, and means whereby said gears will engage the rack one at a time, said gears being adapted to receive and carry feed-rolls of various dimensions and being provided with elongated teeth, whereby the gears are kept in train in any extreme position due to their movement toward or from each other, substantially as described.

3. In a feed mechanism for carding-machines of the character described, the combination of a traveler, actuating mechanism therefor, a rack, a pair of gears in train mounted upon the traveler and capable of movement toward and away from each other, and means whereby said gears will engage the rack one at a time, said gears being adapted to receive and carry feed-rolls of various dimensions and being provided with teeth of depth greater than the extreme range of separation of the gear-axes, substantially as described.

4. In a feed mechanism for carding-maarations of the gear-axes, substantially as dechines of the character described, the combiscribed. nation of a traveler, actuating mechanism Signed by me at Boston, county of Suffolk, therefor, a rack, a pair of gears in train and State of Massachusetts, this 19th day of 5 mounted in yielding bearings on the traveler, July, 1902.

and means whereby said gears will engage the rack one at a time, said gears being adapt- HARRY KEMP ed to receive and carry feed-rolls of various Witnesses: dimensions, and being provided with teeth of ROBERT OUSHMAN, 1o depth greater than the extreme range of sep- FRANK S. HARTNETT.