US3568724A

US3568724A - Heald frame control devices

Info

Publication number: US3568724A
Application number: US841486A
Authority: US
Inventors: Sergio S Xaus
Original assignee: Individual
Current assignee: Individual
Priority date: 1968-07-17
Filing date: 1969-07-14
Publication date: 1971-03-09
Anticipated expiration: 1988-03-09
Also published as: BE735916A; CH511958A; DE1936874A1; FR2014628A1

Abstract

Improvements in heald frame control devices wherein a toothed driving shaft is meshed with planetary pinions of similar diameter mounted on a disc. The pinions are meshed with an interiorly toothed eccentric which actuates by its smooth exterior a flange that carries a projecting appendice articulated to the corresponding oscillatory driving lever of the heald frame. The disc and eccentric are selectively retained by the respective extremities of a cranked control lever which is oscillatable about its vertex. The eccentric and flange cause a relative reciprocating movement that is transmitted to the driving lever of the heald frame whereby the control lever undergoes a movement of displacement from its articulation point that graduates the opening of the shed.

Description

United States Patent HEALD FRAME CONTROL DEVICES 10 Claims, 55 Drawing Figs.

US. Cl Int. Cl Field of Search References Cited UNITED STATES PATENTS 3,180,366 4/1965 Hoenig Primary Examiner-Henry S. .laudon Attorney-Woodhams, Blanchard and Flynn ABSTRACT: Improvements in heald frame control devices wherein a toothed driving shaft is meshed with planetary pinions of similar diameter mounted on a disc. The pinions are meshed with an interiorly toothed eccentric which actuates by its smooth exterior a flange that carries a projecting appendice articulated to the corresponding oscillatory driving lever of the heald frame. The disc and eccentric are selectively retained by the respective extremities of a cranked control lever which is oscillatable about its vertex. The eccentric and flange cause a relative reciprocating movement that is transmitted to the driving lever of the heald frame whereby the control lever undergoes a movement-of displacement from its articulation point that graduates the opening of the shed.

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HEALD FRAME CONTROL DEVICES This invention refers to improvements in heald frame control devices.

Said improvements essentially affect the form of action of the lever, or oscillator staves, from whose upper extremity effeet the control of the heald frames sending them upwards or downwards as also holding them at rest between both movements as the operation requires.

The driving element comprises a horizontal and longitudinally straight toothed shaft that passes through the central hole of two discs that are separated the one from the other by the thickness of the neck or rim of a connecting rod, whose projecting arm is prolonged in a flange that surrounds and articulates the aforementioned stave or lever, providing it with a reciprocating movement, which is changed in its upper resistant arm to an upward and downward movement of the heald frames, as also their period of rest.

Within the thickness of the connecting rod rim, an eccentrically toothed interior crown is situated in a plate provided with an exterior rim concentric with the crown and whose rim adjusts the central hole of the first disc, in whose interior face it is consolidated by points of welding or rivets to the eccentric plate with its interior toothed crown.

The satellite pinions gear with the toothed crown and are driven by their gearing with the horizontal shaft, each pinion being supported by smooth bolts inserted from the exterior base of the rear disc, allowing free gyration of the aforementioned satellite piflibhs.

Both discs are provided with two diametrically opposed slots for the operational engagement of the trigger of one or two cranked levers solidly fixed to one or two horizontal shafts which are oscillatory as the case requires, thus immovabilizing one of the discs by one or another of the peripheral slots, while the other disc remains free to turn.

For the functioning of the device in semiopen shed movement, a displacement of the cranked lever is required from its articulation point, which allows the opening and the closing of the shed to be graduated; and in order to obtain the upward and downward movements of the healds with closed shed, two opposing planetaries are provided on the same diameter, whose proper diameters differ compensating the number of their teeth.

In the attached drawings FIG. 1 represents a vertical side view of the heald control device in an open shed, double lift machine without resting point.

FIG. 2 shows the device of FIG. 1 in the top shed position.

FIG. 3 shows a cross section of the device in position of FIG. 2.

FIG. 4 represents the device of FIGS. 1 and 2 in the continued up and down movement position of the healds.

FIG. 5 shows a side elevation of a modified device for controlling the healds of an open shed, double lift machine with resting point, in the closed and open shed position.

FIG. 6 shows the device in FIG. 5 in the top shed position.

FIG. 7 shows a cross section of the device in the FIG. 6 position.

FIG. 8 shows the device in FIGS. 5 and 6 in the continued up and down movement position of the healds.

FIG. 9 shows another modified device in side elevation for the healds control in an open shed, double lift machine with resting point in the up and down shed position with the possibility of semiopen shed.

FIG. 10 shows the device in FIG. 9 in the up shed position.

FIG. 11 shows a cross section of the device in the FIG. 10

position. v

FIG. 12 shows the device in F IGS. 9 arid 10 in the continued up and down iiiovement position of the healds.

FIG. 13 shows a side elevation of still another heald control device of a closed shed, up and down machine, with or without resting point in the down shed and up shed position.

FIG. 14 represents the FIG. 13 device in the medium shed position, owing to the satellite pinion difference.

FIG. 15 shows a cfoss section of the device in FIG. 14 position.

FIG. 16 represents the device in FIGS. 13 and 14 in the continued movement of half shed at top shed position.

FIG. 17 shows a side view in elevation of a further modified device for the control of healds in a semiopen shed, double lift machine with or without resting point, in the down and up shed position.

FIG. 18 shows the device in FIG. 17 in the medium shed position due to the difference in the satellite pinions.

FIG. 19 shows the device in FIGS. 17 and 18 in the top shed position.

FIG. 20 represents the device in FIGS. 17, I8 and 19 in the medium top shed position due to the difference in the satellite pinions.

FIG. 21 shows a cross section of the device in the position FIG. 20.

FIG. 22 shows a side elevation of a further heald control device in an open shed, double lift machine with resting point, in the down and up shed stop position.

FIG. 23 shows the device in FIG. 22 in the top shed stop position.

FIG. 24 shows a cross section of the device in the position FIG. 23.

FIG. 25 shows a side view in elevation of the device in FIGS. 22 and 23 in which the machine realizes the continued up and down movement of the staves.

FIG. 26 represents a side view in elevation of still a further modified device in an open shed double lift machine with adjustable shed resting point, in the upper and lower shed stop position.

FIG. 27 shows a side view in elevation of the device in FIG. 26 in the top shed stopped position.

FIG. 28 shows a cross section of the device in FIG. 27 position.

FIG. 29 shows a side view in elevation of FIGS. 26 and 27 when the machine realizes the continued up and down shed movements.

FIG. 30 shows a plan view of the elements comprising the heald control mechanisms used in FIGS. 1 to 12, and 26 to 29 as seen in the successive order of colocation of each of the said devices.

FIG. 31 shows the elements of FIG. 30 dismantled in perspective in the same order of mounting one after the other.

FIG. 32 represents a plan view of the elements comprising the mechanisms employed in FIGS. 13 to 21.

FIG. 33 shows the elements of FIG. 32 dismantled in perspective in the same order of mounting one after the other.

FIG. 34 represents a plan view of the elements integrating the heald control mechanisms utilized in FIGS. 22 to 25, seen in successive mounting order in each of the devices described in FIGS. 22 to 25.

FIG. 35 a perspective view of the elements in FIG. 34 in the same mounting order, one after another applied in FIGS. 22 to 25.

FIG. 36 represents a side view in elevation of the exterior planetary shaft driving element, showing the rear disc in the upper part and the front disc in the lower part.

FIG. 37 shows a cross section of the planetary element of FIG. 36.

FIG. 38 is a graphical representation of the shed without resting point, of the embodiment of FIGS. 1 to 4.

FIG. 39 a graph of the shed with rest point, of the embodiment ofFIGS. 5 to 8.

FIG. 40 a graph of the hook retaining eccentric of embodiment of FIGS. 5 to 8.

FIG. 41 a graph of the shed with 30 rest point of embodiment of FIGS. 9 to 12.

FIG. 42 a graph of the hook retaining eccentric with 30 rest point of the embodiment of FIGS. 9 to 12.

FIG. 43 a graph of the shed with 60 rest point of embodiment ofFIGS. 9 to 12.

FIG. 44 a graph of the hook retaining eccentric with 60 rest point of the embodiment of FIGS. 9 to 12.

FIG. 45 a graph of the shed without rest point in the embodiment of FIGS. 13 to 116.

FIG. 46 a graph of the semiopen, double lift shed without rest point ofthe embodiment of FIGS. 17 to 21.

FIG. 47 a graph of the open shed, double lift shed with 6 rest point of the embodiment of FIGS. 22 to 25.

FIG. 48 a graph of the cranked lever eccentric of the embodiment of FIGS. 22 to 25.

FIG. 49 a graph of the open shed, double lift shed with 60 resting of the embodiment in FIGS. 26 to 29, with addition of the exterior differential of the FIGS. 36 and 37, and which provokes in the central shaft an alternating reciprocating movement of one turn to the right and another toward the left.

FIG. 50 shows the previous graph with a 90 resting point.

FIG. 51 shows the previous graph with a 120 resting point.

FIG. 52 shows the graph of the closed up and down shed with 60 rest point of the embodiment in FIGS. 13 to 16, with the addition of the exterior differential of the embodiment of FIGS. 36 and 37, and which provokes in the central shaft an alternating reciprocating movement of one turn to the right and another to the left.

FIG. 53 shows the previous graph with a 90 resting point.

FIG. 54 shows a graph of the semiopen, double lift shed with 30 rest point of the embodiment in FIGS. 17 to 21, with the addition of the exterior differential of the embodiment of FIGS. 36 and 37, and which provokes in the central shaft an alternating reciprocating movement of one turn to the right and another to the left.

FIG. 55 shows the previous graph with a 60 resting point.

Similar reference numbers are used to denote similar corresponding pieces in the different variations of realization.

Upon referring to the FIGS., and particularly FIGS. I4 and FIGS. 30 and 31, 1 represents the driving shaft of the device, the shaft being toothed horizontally; 2 represents the eccentric disc carrier; 3 the eccentric provided with an interiorly toothed crown, eccentric 3 being fixedly connected to the carrier disc 2; 4 shows a cage of bearing needles interposed between the external eccentric surface of eccentric 3 and the interior of the connecting rod ring 5; 6 shows each one of the four satellite pinions which engage with the interiorly toothed crown of the eccentric 3 and a toothed portion of the shaft 1, and which pinions are supported on the inside face of the satellite disc carrier 7, centered to the driving shaft 1 by means of the bolts 8 (FIGS. 30 and 31) situated from the exterior face of the disc 7, projecting from the interior face and constituting the free turning shafts of the pinions 6; where 9 (FIG. 31) represents a peripheral slot in the disc 2 for the rest position of the lower shed and 10 represents an opposite slot for the rest position of the upper shed; whereby 11 represents the peripheral slots in the satellite carrier disc 7, engagement of one of them simultaneously with the disengagement of slots 9 and 10 of the disc 2 causes the machine to enter the alternating rise and fall continued position; where 12 represents the upper cranked lever in front of the disc 2, which lever 12 engages one of slots 9 or 10, and 13 represents the twin lower lever in front of the disc 7 which engages in one of the slots 11 of said disc 7, both levers l2 and 13 being solidly fixed to the common control shaft 14; where 15 represents the flange with projecting appendice of the connecting rod 5 which provokes the oscillation of the lever or stave 16 that activates the healds to form the distinct phases of the shed.

In the variation of FIGS. 5 to 8, the lever 12 is mounted on the fixed shaft 17 and the lever 13 15 mounted on a movable shaft 18 which is supported by the radial lever 19, which lever has a follower member 19A received within a slot of the eccentric 20, whereby lever 19 oscillates due to the eccentric 20 oscillating with the shaft 21.

In the variation of FIGS. 9 to 12, two slotted

eccentrics

22 and 22 are mounted on shaft 21 for varying the position of the

shafts

23 and 24, which shafts are supported in the respective extremities of the

radial levers

25 and 26, with whose shafts the cranked levers 12 and 13 gyrate.

Levers

25 and 26 have followers engaged within the grooves of the

eccentrics

22 and 22 for movement thereby.

Further eccentrics

22 and 22 are angularly movable in opposite directions as is evident from inspection of FIGS. 9 and 10.

In the embodiment of FIGS. 13 to 16, the variation consists of a compensated change of the number of teeth in two of the satellite pinions 27 and 28 mounted in opposition on the same diameter. Due to

pinions

27 and 28, the lever 16 is displaced by half a stroke only by one complete turn of the central shaft 1, thus obliging this shaft 1 to make two complete turns per stroke.

The variation in FIGS. 17 to 21 consists of the provision of the compensated change in the number of teeth in two of the opposing satellite pinions 27 and 28 on the same diameter and in a determined number of teeth, so that in the opposing position of said pinions, the lever 16 shall not arrive at the medium shed, as much in the up as in the down position; by this means the semiopen double lift shed is attained.

The variation in FIGS. 22 to 25 comprises the addition of a radial lever 35 oscillated by the eccentric 34 driven by the shaft 36. The lever 35 again has a follower 35A engaged with a slot formed on eccentric 34 for causing angular displacement of lever 35. Shaft 14 is mounted on lever 35, which shaft 14 rotatably supports

levers

12 and 13. Also, pairs of pinions 6' and 6" are disposed between toothed shaft 1 and toothed eccentric 3.

The variation in FIGS. 26 to 29, consists of the addition of an interconnecting articulated tie rod 37 between the appendices 38 of the upper and lower cranked levers l2 and 13.

FIGS. 36 and 37 illustrate therein an actuating device useable with the embodiments of FIGS. 13 to 21 and 26 to 29 for causing relative rotation between the front and rear discs due to the planetary mechanism therebetween, wherein 29 represents each one of the satellite pinions; 30 represents the planetary toothed crown; 31 represents the front disc; 32 represents the rear disc; 33 represents each of the shaft bolts of the satellites 29 fixed in the rear disc 32; 41 represents the disc carrying sleeve on which the discs gyrate and which sleeve 41 is fixed by screws to the driving shaft 1; 42 represents the lug of the disc 41; 45 denotes the articulated connecting rod on the lug 43; 46 denotes the runner that activates both connecting rods displaced by the heart shaped eccentric 47 solidly fixed to the ingoing shaft of the machine 48 which gives one turn of 180 with a stop position and l more with another stop, and whose eccentric may offer distinct shed stops according to the type of loom and of the articles to be woven; where 49 represents each of the two rollers that provoke the displacement of the runner 46 upon gyration of the eccentric 47; where 50 represents the articulation shaft of the connecting

rods

44 and 45 at the extremity of the runner 46.

The control devices as described in detail above are individually used for controlling the movement of a heald (not shown) which is operatively interconnected to the lever or stave 16, which heald is moved due to rotational movement of the main shaft 1. The above-described control devices permit the heald to be fixedly locked in a selected position irrespective of the rotational movement of the shaft 1, or alternatively the control devices permit the heald to be moved in response to the rotational movement of the shaft 1.

Specifically, considering the operation of the embodiment of the control device illustrated in FIGS. 1-4, 30 and 31, when the control lever 12 is disposed so as to engage the slot 9 formed within the disc 2 as illustrated in FIG. I, this causes the disc 2 and the eccentric 3 carried thereon to be fixedly locked. However, since lever 13 cannot engage the slots 11 of the disc 7, the disc 7 is freely rotatable and accordingly any rotational movement of the central shaft 1 will be transmitted to the pinion 6, which pinion 6 will react with the internal ring gear teeth of the stationary eccentric 3 so as to cause the pinion 6 and carrier 7 to be rotated with a planetary gear-type of movement. With the control mechanism positioned as described above, as illustrated in FIG. 1, the rotational movement of the main shaft 1 thus causes a free wheeling of the disc 7, the eccentric 3 being nonrotatably locked in position so as to also maintain the stave 16 locked in one of its extreme end positions, which in turn results in the heald being maintained in a stationary position.

Claims

1. Improvements in heald frame control devices having positive countereffect movement and double lift with Open shed, comprising a toothed driving shaft, a plurality of planetary pinions disposed adjacent and in meshing interengagement with said toothed shaft, a disc disposed concentric with said shaft and having said planetary pinions rotatably mounted thereon, an eccentric member disposed for rotation concentric with said shaft and having a toothed surface disposed in meshing interengagement with said planetary pinions, said eccentric member having an actuating surface eccentrically disposed relative to the rotational axis of said shaft, a flange movably supported upon said eccentric actuating surface and having a projecting portion, an oscillatory driving lever articulated to the projecting portion of said flange, the driving lever being adapted to be connected to and cause oscillation of a heald frame, a control lever disposed adjacent the rotary shaft and angularly movable for causing a portion of said control lever to engage the disc or the eccentric member for selectively retaining same in a selected position and means for causing the control lever to undergo a movement of displacement from its articulation point for graduating the opening of the shed, whereby rotation of said eccentric member causes relative reciprocating movement of said flange relative to said eccentric member with said relative movement being transmitted through the driving lever to the heald frame.

2. Improvements in heald frame control devices according to claim 1, in which at least two planetary pinions are provided and disposed on diametric opposite sides of the rotational axis of said driving shaft, said two planetary pinions being of different diameters.

3. Improvements in heald frame control devices according to claim 1, in which the planetary pinions comprise a first set of planets disposed in meshing engagement with said two shafts and a second set of planets disposed in meshing engagement with said first set and with the toothed surface of said eccentric member, said first and second sets of planets being rotatably supported upon said disc.

4. Improvements in heald frame control devices according to claim 1, in which the eccentric member has an interior toothed surface disposed in substantially concentric relationship with the rotational axis of said toothed shaft, said eccentric member further having a substantially cylindrical smooth exterior surface thereon disposed eccentrically relative to the rotational axis of said toothed shaft, said flange comprising a cranklike member having one end thereof rotatably supported upon said smooth eccentric surface, the other end of said cranklike member being articulated to said driving lever.

5. Improvements in heald frame control devices according to claim 4, in which the disc and the eccentric member each have slots on the outer peripheries thereof, and there being provided a pair of pivotal control levers with the extremity of one of said control levers being adapted to extend into the slot formed in the eccentric member and the extremity of the other control lever being adapted to extend into the slot in the disc for permitting either the eccentric member or the disc to be selectively maintained in a selected position.

6. Improvements in heald frame control devices according to claim 5, in which the control levers are mounted for pivotal movement toward and away from the disc and the eccentric member about selected pivot points, and means mounting said control levers for permitting selected movement of said pivot points relative to the rotational axis of said shaft.

7. Improvements in heald frame control devices according to claim 6, in which the mounting means includes an arm member extending radially relative to said shaft and angularly displacable substantially about the rotational axis of said shaft, said control lever being pivotally mounted on said arm at a point displaced radially outwardly from the rotational axis of said shaft.

8. Improvements in heald frame control devices according to claim 7, further including ecceNtric cam means coacting with said arm member for causing swinging movement of said arm member about the rotational axis of said shaft.

9. Improvements in heald frame control devices according to claim 1, in which a pair of control levers are provided adjacent the control device with one of said control levers being disposed for coaction with the eccentric member and the other of the control levers being disposed for coaction with the disc, one end of said control levers being disposed for coaction with said eccentric member and said disc, and the other end of said control levers being united by a linking rod provided with self-reciprocating movement, said control levers each being pivotally mounted at a point disposed between the opposite ends thereof.

10. Improvements in heald frame control devices according to claim 1, in which first and second connecting rods are pivotally interconnected to the disc and the eccentric member, respectively, said first and second connecting rods in turn being pivotally interconnected to a slideable control member and a rotational rotatable cam member disposed in driving engagement with said slideable control member for causing slideable movement thereof with the slideable movement of the control member causing a corresponding oscillation of the disc and the eccentric member due to the connecting rods disposed therebetween, said connecting rods being interconnected to said disc and said connecting member for causing oscillation thereof in opposite directions in response to reciprocation of said slideable control member.