US2067399A - Eccentric for operating sliver rubbing devices - Google Patents

Description

J. HUGHES ECCENTRIC FOR OPERATING SLIVER RUBBING DEVICES Jan. 12, 1937.

Filed July 28, 1934 By Ms Fri-0mm:-

Patente Jan. 12, 1937 ECC'ENTREC FUR OPERATING SLIVER RUBBING DEVICES John Hughes, Rochdale, England Application July 28,

1934, Serial No. 737,368

in Great Britain July 29, 1933 1 Claim.

This invention of improvements in gilling machines and drawing machines for the treatment of fibrous material relates to gilling machines and worsted draw frames for preparing fibrous material for spinning or other treatment or use.

This invention consists in mechanism which is provided for use in imparting a reciprocating motion to and providing for adjustment of the extent of the reciprocation of reciprocating rubbing devices; namely, rubbing leathers or rollers or like devices in an intersecting gill box with upper and lower sets of falls-rs or a gill box with a single set of fallers or a worsted draw frame and comprises two sets of eccentrics provided respectively for working two eccentric or connecting rods and comprising in each set two eccentrics for co-operation, applied and made adjustable one around or upon another and secured to revolve together in diiferent positions of adjustment so that in effect in revolution the eccentricity or radius of one may be added to or made wholly or in part to counteract or to be subtracted from that or" the other in the transmission of motion to the corresponding eccentric rod or connecting rod. With this mechanism the reciprocatory movement imparted to a rubbing leather or roller or like device may be easily adjusted within any requisite limits between a maximum and a minimum or between a maximum and no movement.

This mechanism in comparison with cranks hitherto used for imparting reciprocating motion to rubbing leathers or rollers in a gill box or Worsted draw frame is advantageous in being more easily adjusted, in affording a greater range of adjustment of the extent of reciprocation, in being safer, in being neater in construction, in working more smoothly and with less noise in action, in presenting larger bearing surfaces and comprising fewer parts liable to wear and in being cheaper to manufacture.

Fig. l of the drawing is a vertical section partly in side elevation showing two sets of eccentrics and rods and other parts used in connection therewith for imparting a reciprocating motion to and providing for the adjustment of the extent of the reciprocation of rubbing leathers or like devices in a gill box or worsted draw frame. Fig. 2 is partly a plan of the parts shown in Fig. l and partly a section taken on the plane indicated by the line II-II of Fig. 1. Fig. 3 is mainly a horizontal section and partly a plan taken on the plane indicated by the line TIL-II of Fig. 1 and partly a plan showing parts in a position different from that in which they are shown in Figs. 1 and 2. Fig. e is mainly another horizontal section taken on the plane indicated by the line II-II of Fig. 1 and showing parts in a different position and is in part a plan.

The same characters of reference indicate corresponding parts in the different figures.

In mechanism provided according to the invention and shown in the drawing, a shaft I. provided to be revolved in a convenient part of the machine, portions of bearing parts 2, 3 for the shaft 1 being indicated, is provided with a block A adjustable around it and formed with oppositely directed eccentrics 5, 6 equal in eccentricity on the faces to be the upper and lower in use. Around the eccentrics 5, 6 formed on the block 6 are mounted other eccentrics I, 8 respectively disposed oppositely in relation to one another, equal to them ineccentricity, and the block 4 formed with two eccentrics 5, 6 is formed with holes 9 so that it may be easily turned about the shaft 5. In the case illustrated, the eccentrics 5, B are secured in position around the shaft I by means of set-screws I0, I I respectively which being provided with washers i2, I3 respectively are made to pass through radial slots hi, I5 in face plates IE, II respectively. The face plates I5, I? are applied adjacent to opposite ends of the block Q and the eccentrics l, 8 respectively and are disposed so that the radial slot I4 of the one is directed oppositely to that of the other and are secured against movement around the shaft I by means of keys or splines I8, I9 respectively and against movement lengthwise thereof by set-screws I6, ll respectively which are screwed into the face plates I6, I! respectively and made to engage the shaft. When the set-screws II], II are slackened, the block 1 can be turned around the shaft I and relatively to the eccentrics I, 8 so that the eccentricities of the eccentrics 5, 6 on the block 4 may be made to co-operate to the full with those of the external eccentrics l, 8 as shown in Figs. 1 and 2 or completely to neutralize them as shown in Fig. 4 or so that the resultant eccentricity may be made as is indicated in Fig. 3 of any extent within the limit of full co-operation or complete neutralization, the radial slots I4, I5 allowing for inward and outward movement of the set-screws I9, II. When the set-screws II], II are tightened after adjustment of the block 4 around the shaft I and within the eccentrics 1, 8, the eccentrics T, 8 being secured by the splines or keys I8, I9 and set-screws II), II against turning around the shaft I, serve to compel the block 4 to turn with them on the turning of the shaft 5. Around the outer eccentrics l, 8 respectively are applied eccentric straps or enclosing parts 20, 2| formed with parts 22, 23 of eccentric rods which are formed with right- hand screwthreads 24, 25. to be engaged with corresponding right-hand screw-threads in sleeves 26, 2? respectively also formed with left-hand screwthreads to be screwed upon other parts 28, 29 of the eccentric rods respectively which are formed with left-hand screw- threads 35, 3! and are connected in any appropriate manner with the shafts or other parts to be reciprocated, for example as in the case illustrated by gudgeon pins 32, 33 secured in forked attachment parts 34, 35 respectively, the gudgeon pin 32 being shown as employed with a bush 36, shown only in part, applied around one end. Lock nuts 24', 25, 28' and 29 on the parts 24, 25, 28 and 29 are provided for use in securing the sleeves 26 and 2! to which they are respectively adjacent.

What I do claim as my invention and desire to secure by Letters Patent is:

In an eccentric mechanism for operating sliver rubbing devices, a rotary shaft, an integral block mounted on said shaft and formed with a collar engageable by means for eifecting angular adjustment of said block on said shaft, and also formed with two equal and opposite inner eccen-,

trics extending from opposite faces of said collar, two outer eccentrics embracing said inner eccentrics, said outer eccentrics being of equal eccentricity to said inner eccentrics, two: eccentric straps surrounding said outer eccentrics respectively and integral with parts of eccentric rods for transmitting reciprocating movements to the rubbing devices, two plates applied to said shaft, one at each end of said block, said plates being splined to said shaft, and each formed with a radial slot, said slots extending oppositely from the axis of said shaft, means for securing said plates to said shaft for adjustment lengthwise of said shaft, and two headed set-screws penetrating said slots and threaded into said outer eccentrics, the heads of said set-screws bearing on said plates in the operative condition of said mechanism and being adapted to be freed from said plates by slackening said set-screws to permit angular adjustment of said block relatively to said shaft to any chosen point within an angular range of 360 and corresponding radial movement of said outer eccentrics relatively to said shaft to effect equal and simultaneous variation of the eccentricity of said outer eccentrics.

JOHN HUGHES.

Images