US3109605A

US3109605A - Spool support for textile machines

Info

Publication number: US3109605A
Application number: US51392A
Authority: US
Inventors: Ostermann Max
Original assignee: W&M Ostermann GmbH and Co KG
Current assignee: W&M Ostermann GmbH and Co KG
Priority date: 1959-08-29
Filing date: 1960-08-23
Publication date: 1963-11-05
Anticipated expiration: 1980-11-05

Description

Nov. 5, 1963 M. CDSTERMANN SPOOL SUPPORT FOR TEXTILE MACHINES Filed Aug. 23, 1960 39 1.0 2? $293031 3267696670 F/Gl 1811 m Him! \\\\\\\\\\\\5 INVENTOR 1% 0mm WS QJQD United States Patent "ce 3,169,605 SPOOL SUPPORT FOR TEXTILE MACHINES Max Ostermann, Wuppertal-Barmen, Germany, assignor to W. & M. Ostermann, Wuppertal-Barmen, Germany,

Filed Aug. 23, 1960, Ser. No. 51,392 Claims priority, application Germany Aug. 29, 1959 2 Claims. (Cl. 242-129.S)

The invention relates to a spool support intended for covering, twisting, stranding machines or the like, having several spools rotatably mounted upon a common axis, and one adjustable braking mechanism regulating the run-off speed of the spools. Spool supports of this type hitherto known exhibit the disadvantage that the threads running off from the spools have varying tension, as the supply of thread cannot be sutficiently accurately spooled up on to the individual spools for uniform tension of all the threads to be ensured when the supply of thread is drawn off.

In order to avoid this disadvantage it is proposed according to the invention, that the spools adjacent in each case rotate in opposite directions during the period when the thread is drawn oif, and are subject, via a friction coupling interposed in each case, to the action of a torque applied in the wind-up direction of the thread. The en nular brake lining in contact with the end faces of the outer spools in each case is then secured to a disc which is mounted on the side cheeks of the spool support swivelably about an axis running perpendicular to the spool axis. A specially favourable mounting is obtained if the discs are connected each via two mounting eyes arranged level with the spool axis and positively overlapping the side cheeks of the spool support to guide rods running parallel to one another and coupled to the side cheeks at a pivot point arranged at a distance from the spool axis, while the bearing pressure of the brake discs is generated via a tension lever swivelably mounted on the cheek of the support, which coacts with eccentric rollers against the free end of the guide rod projecting beyond the anchorage point of the mounting eyes. The brake disc which can be swivelled by the tension lever is conveniently mounted by the interposition of pressure springs so as to be shiftable towards the spool axis on a plate connected to the guide rods, while the opposite brake disc acting as a counter-pressure disc is supported by adjustable stop bolts against the one cheek of the spool support.

The accompanying drawings merely show a practical embodiment of the invention. The latter is not limited thereto. Further possible embodiments exist, without involving a departure from the idea of the invention. The drawings show:

FIGURE 1 a sectional elevation of the spool support,

FIGURE 2 a plan according to FIGURE 1,

FIGURE 3 a left-hand elevation of the spool support according to FIGURE 1, and

FIGURE 4 a right-hand elevation of the spool support according to FIGURE 1.

To the base plate of the spool support are secured in each case the

side cheeks

11 and 12 by bolts 13, which accommodate the spool axis 14 in suitable holes. The spool axis 14 is held by the

cheeks

11 and 12 unshiftably in an axial direction in the manner that the axis 14 exhibits a shouldered end 15 and thereby makes contact by an annular contact surface in the one direction against the cheek 12, whereas at the other end machined surfaces 16 are provided which are positively overlapped by the parallel walls of the upper portion of the hole 17 formed in a bayonet locking plate 20 mounted shiftably on the cheek 11 by the

bolt

18, 19, so that the axis 14 is thereby retained securely against twisting and shift- 3,109,605 Patented Nov. 5, 1963 ing in the

cheeks

11, 12 of the spool support. The bolts 18 secured in the cheek 11 overlap the

slots

21, 22 of the plate 20, on which is arranged a hand grip 23 which serves simultaneously as suspension for a traction spring 24, the other end of which is secured to a pin 25 of the cheek 11.

Onto the spool axis 14 is pushed .a bushing 26, which accommodates the spools 27-32, while between each two of the spools 27-32 are provided the brake discs 33-37, which act as a friction coupling. Each of the individual spools 27-32 is mounted freely rotatable on the bushing 26. Adjacent to the outside flange 38 of the spool 27 is provided a brake disc 39 with interposed brake lining 40. Two mounting

eyes

41, 42, are fixed to brake disc 39 straddling the cheek 11 and which are connected via screws 43 with

guide rods

44, 45, running mutually parallel, which are mounted swivelably on the check 11 at their lower ends via a screw bolt 46.

A tension lever 50 is swivelably mounted via the bolt 49 in the

mounting eyes

47, 48 on the cheek 12, whilst at the end of the bolt 49 eccentric journals 51 are provided on each of which is mounted a roller 52 respectively 53, which coacts with the free end 54, respectively 55 of the

guide rods

56, 57, which are swivelably mounted via screw bolts 58 on the check 12. Level with the spool axis 14 are located the

mounting eyes

59, 60 of the plate 61, which are likewise connected to the

guide rods

56, 57. The hub-like continuation 62 of the plate 61 serves to accommodate in the manner of a bearing the brake disc 63 to which is secured the brake lining 64 which coacts with the end face of the flange 65 of the spool 32. Further provided on the plate 61 are threaded bolts 66, which engage with pins 67 into the hole 68 of the brake disc 63 and accommodate in each case a spring 69 which is supported at one end against the brake disc 63 and at the other end against the annular surface of the bolt 66, which may be rotated for the purpose of adjusting the spring tension via a square head 70.

The spools 27-32 are introduced into the spool support in the manner that they are first pushed once on to the bushing 26 with the brake discs 33-37 interposed. After the tension lever 56 seen in FIGURE 1 has been swivelled counter clockwise into its inoperative upward pointing position and space has thereby been created for the introduction of the bushing 26 which carries the spools 27-32 between the two

brake discs

39 and 63, the plate 20 is raised by means of the hand grip 23 against the action of the spring 24 far enough for the axis 14 to be pushed through the hole 17 into the bushing 26 such a distance that the shouldered end 15 of the axis 14 is accommodated by the hole in the check 12 and that after the hand grip 23 has been released the plate 20 is able to move into its operative position represented in FIG. 1 and 3, in which the axis 14 is firmly held against twisting and shifting by the plate 20. The tension lever 15 is subsequently swivelled out of its upward pointing inoperative position, not shown, into the position according to FIGURE 1, while the

tension rollers

52 and 53 coact with the free ends 54 and 55 of the

guide rods

56 and 57, so that the latter are swivelled counter-clockwise about the point 58, whereby the plate 61 and the brake disc 63 with the brake lining 64 press upon the flange 65 of the outer spool 32, and after the adjustable stops 71, 72 on the brake disc 39 have made contact with the cheek 11, the spools 27-32 are compressed in an axial direction. The spools 27-32 are so arranged on the bushing 26, that upon the threads 73 being drawn oif, the spools 27, 29 and 31 rotate in the direction of the arrow 74, whilst when the threads 75 are drawn ofi, the spools 28, 30 and 32 rotate in the opposite direction according to the arrow 76 indicated. By the interposed brake disc 33-37 a counter-directed torque is thereby exerted upon each pair of adjacent spools 27,

28 respectively 29, 30 etc. when the threads are drawn off, which has the effect that the required uniform thread tension of every thread is guaranteed even independently of the winding diameter of the spool concerned. The spool support is secured by the securing plate 10 to the rotating table of the rotary plate of a covering machine, stranding machine or twisting machine via bolts engaging through the holes 77.

I claim:

1. Spool support for a braiding machine or the like comprising, in combination, a support bracket having a pair of side plates extending spaced from and substantially parallel to each other, each of said side plates being formed with a bore therethrough aligned along a common axis substantially normal to said side plates; a shaft extending through said bores; locking means mounted on one of said side plates movable between a locking position engaging said shaft for holding the same in fixed position on said bracket and a releasing position permitting withdrawal of said shaft from said bracket; a plurality of spools mounted on said shaft adjacent each otherfor rotation about said common axis, each of said spools having a pair of end faces substantially normal to said common axis; a friction disk located between adjacent end faces of any two adjacent spools and frictionally engaging said end faces so as to transmit a moment imparted to one spool to the spools adjacent thereto, whereby when filaments, wound on adjacent spools in opposite directions, are pulled off, said spools will be respectively turned in opposite directions and a braking moment will be imparted to each spool by the spool adjacent thereto, a pair of braking disk means arranged coaxial with said spools about said shaft and respectively frictionally engaging the outer end faces of the outermost of said plurality of spools; a pair of arms respectively arranged on opposite sides 4 of each of said side plates and each connected at one end thereof to the respective side plate for pivotal movement about a pivot axis substantially normal to said common axis; means pivotally connecting each of said brake disk means to the pair of arms adjacent thereto substantially at the region of said common axis for pivotal movement about an axis substantially normal to said common axis; pressure means mounted on one of said side plates and engaging the pair of arms mounted thereon at free ends thereof distant from said turning axis for turning the free ends of said one pair of arms towards the other of said side plates for moving thereby the brake disk means connected to said one pair of arms toward the other of said brake disk means; and adjustable stop means coordinated with the other of said brake disk means for limiting the movement thereof toward the other of said side plates.

2. An arrangement as defined in claim 1 in which said one brake disk means comprises a first disk connected to said arms and having a hub portion surrounding said shaft with clearance and directed away from said one side plate towards the spool adjacent thereto; a second disk slidably mounted on said hub; an annular friction liner mounted on said second disk and facing the adjacent end face of the spool adjacent thereto; and spring means operatively connected to said disks for pressing sa'id friction liner in engagement with said end face.

References Cited in the file of this patent UNITED STATES PATENTS 127,722 W'hitaker et a1. June 11, 1872 778,494 Kreeger Dec. 27, 1904 958,062 Adkins May 17, 1910 1,379,164 Bullis May 24, 1921 2,911,875 Ostermann et a1 Nov. 10, 1959 mm u

Claims

1. SPOOL SUPPORT FOR A BRAIDING MACHINE OR THE LIKE COMPRISING, IN COMBINATION, A SUPPORT BRACKET HAVING A PAIR OF SIDE PLATES EXTENDING SPACED FROM AND SUBSTANTIALLY PARALLEL TO EACH OTHER, EACH OF SAID SIDE PLATES BEING FORMED WITH A BORE THERETHROUGH ALIGNED ALONG A COMMON AXIS SUBSTANTIALLY NORMAL TO SAID SIDE PLATES; A SHAFT EXTENDING THROUGH SAID BORES; LOCKING MEANS MOUNTED ON ONE OF SAID SIDE PLATES MOVABLE BETWEEN A LOCKING POSITION ENGAGING SAID SHAFT FOR HOLDING THE SAME IN FIXED POSITION ON SAID BRACKET AND A RELEASING POSITION PERMITTING WITHDRAWAL OF SAID SHAFT FROM SAID BRACKET; A PLURALITY OF SPOOLS MOUNTED ON SAID SHAFT ADJACENT EACH OTHER FOR ROTATION ABOUT SAID COMMON AXIS, EACH OF SAID SPOOLS HAVING A PAIR OF END FACES SUBSTANTIALLY NORMAL TO SAID COMMON AXIS; A FRICTION DISK LOCATED BETWEEN ADJACENT END FACES OF ANY TWO ADJACENT SPOOLS AND FRICTIONALLY ENGAGING SAID END FACES SO AS TO TRANSMIT A MOMENT IMPARTED TO ONE SPOOL TO THE SPOOLS ADJACENT THERETO, WHEREBY WHEN FILAMENTS, WOUND ON ADJACENT SPOOLS IN OPPOSITE DIRECTIONS, ARE PULLED OFF, SAID SPOOLS WILL BE RESPECTIVELY TURNED IN OPPOSITE DIRECTIONS AND A BRAKING MOMENT WILL BE IMPARTED TO EACH SPOOL BY THE SPOOL ADJACENT THERETO, A PAIR OF BRAKING DISK MEANS ARRANGED COAXIAL WITH SAID SPOOLS ABOUT SAID SHAFT AND RESPECTIVELY FRICTIONALLY ENGAGING THE OUTER END FACES OF THE OUTERMOST OF SAID PLURALITY OF SPOOLS; A PAIR OF ARMS RESPECTIVELY ARRANGED ON OPPOSITE SIDES OF EACH OF SAID SIDE PLATES AND EACH CONNECTED AT ONE END THEREOF TO THE RESPECTIVE SIDE PLATE FOR PIVOTAL MOVEMENT ABOUT A PIVOT AXIS SUBSTANTIALLY NORMAL TO SAID COMMON AXIS; MEANS PIVOTALLY CONNECTING EACH OF SAID BRAKE DISK MEANS TO THE PAIR OF ARMS ADJACENT THERETO SUBSTANTIALLY AT THE REGION OF SAID COMMON AXIS FOR PIVOTAL MOVEMENT ABOUT AN AXIS SUBSTANTIALLY NORMAL TO SAID COMMON AXIS; PRESSURE MEANS MOUNTED ON ONE OF SAID SIDE PLATES AND ENGAGING THE PAIR OF ARMS MOUNTED THEREON AT FREE ENDS THEREOF DISTANT FROM SAID TURNING AXIS FOR TURNING THE FREE ENDS OF SAID ONE PAIR OF ARMS TOWARDS THE OTHER OF SAID SIDE PLATES FOR MOVING THEREBY THE BRAKE DISK MEANS CONNECTED TO SAID ONE PAIR OF ARMS TOWARD THE OTHER OF SAID BRAKE DISK MEANS; AND ADJUSTABLE STOP MEANS COORDINATED WITH THE OTHER OF SAID BRAKE DISK MEANS FOR LIMITING THE MOVEMENT THEREOF TOWARD THE OTHER OF SAID SIDE PLATES.