US2931594A - Creel bobbin holder for spinning or preparing machines - Google Patents

Description

J. NOGUERA April 5, 1960 CREEL BOBBIN HOLDER FOR SPINNING OR PREPARING MACHINES Filed Dec. 2. 1957 2 Sheets-Sheet 1 April 5, 1960 J NOGUERA 2,931,594

CREEL BOBBIN HOLDER FOR SPINNING OR PREPARING MACHINES Filed Dec. 2, 1957 2 Sheets-Sheet 2 IN v45 NTo R "Joseph NoeueRA mm i-m q mwem ATTORNE S CREEL BOBBIN HOLDER FOR SPINNING OR PREPARING MACHINES Joseph Noguera, London, England, assignor to Casablancas High Draft Company Limited, Manchester, England, a British company Application December 2, 1957, Serial No. 700,161 Claims priority, application Great Britain April 12, 1957 1 Claim. (Cl. 242-130.2)

This invention relates to creel bobbin holders for spinning or preparing machines, the holders being of the rotary suspension type having a spindle-like body which can be arranged in a'dependent position for engagement in a bobbin core, a collar which slidably surrounds the body to abut an engaged core end under spring influence and a body catch which can be rotated into or out of a transverse bobbin retaining position by causing the collar to slide along the body against the spring infiuence.

Such a bobbin holder has already been proposed employing a hollow body with an elongated internal catch having ends which project through opposed body openings in the transverse bobbin retaining position. For operating this catch, an elongated resilient U-member is arranged to straddle a key which is extended across the inside of the body and projects through opposed axial body slots to engage registering axial apertures opening through the collar. The catch is then embraced by the dependent U-member arms, one of which has a hooked extremity for rotating the catch on upward movement of the member, and is operable against the action of a coil spring which bears down on the key and on the looped end of the U-member.

This known arrangement has proved very effective in practice but it does have the disadvantage of relying wholly on the functioning of the spring to return the enclosed U-member after a catch operating stroke and such a spring can fail to function in exceptional circumstances as, for instance, when some obstruction jams the catch inside a bobbin. Also the key is liable to slip longitudinally if the spring pressure thereon is removed through mishandling or otherwise.

A main object of the present invention is to obviate the foregoing disadvantage in these known holders and accordingly the invention provides a creel bobbin holder of the type specified wherein the body catch is arranged for rotation by catch operating means which are positively located both axially and transversely in relation to the collar whereby said means are constrained to move with the collar in both axial directions along the body.

In order that the invention may be clearly understood and readily carried into-etiect, an embodiment thereof will now be described in detail with reference to the accompanying drawings in which:

Figure l is a part-sectional side elevation showing one form of bobbin holder constructed in accordance with the invention,

Figure 2 is a sectional side elevation of the bobbin holder taken at right angles to Figure 1,

Figure 3 is a side elevational view showing a detail of the holder according to Figures 1 and 2, and

Figure 4 is a cross-section on the line IV--IV of Figure 3.

Referring now to the drawings, the illustrated bobbin holder has a substantially cylindrical elongated hollowed body casing 1 which is axially divided into two substannited States Patent tially similar parts to permit assembly of the operating members in the holder as later described. The ends of these casing parts are shaped to provide, when assembled, an upper transverse casing wall 2 and a lower rounded transverse casing wall 3. To ensure accurate assembly of the casing parts, the facing surfaces of the two halves of the transverse lower wall 3 are provided each with a locating pin 4 which is arranged to enter a complementary aperture 5 formed in the other half of the wall. The casing parts are also secured together at the lower end by a circlip 6 which seats in an annular groove 7.

At the upper end, the casing 1 is rotatably attached to the head So of a bolt 8 through the intermediary of a ball race 9 having an outer skirted race member 9a which embraces the upper casing end and is secured thereto by a transverse rivet 10. The bolt 8 is provided with a co-operating nut 8b whereby the casing can be suspended from an appropriate support member. The bolt 8 also carries an outer skirt-like casing 11 which overlies and protects the ball race mechanism.

In the lower part of the body casing 1 is mounted a catch in the form of a pair of aligned elongated hexagonal plates 12 spaced apart by two parallel ribs 13 mounted for rotation about a pin 14 which is secured transversely across the body 1 as shown. The casing parts are shaped to provide diametrically opposed axial openings 15 opposite the respective plate ends so that these plate ends can protrude beyond the casing body 1 in a transverse body retaining position of the catch as shown in full lines in Figure 1. The plates 12 can alternatively be rotated to a withdrawn position in relation to the body casing as shown in chain-dotted lines in Figure l.

A resilient member 16 of elongated inverted U-shape is supported in the body casing by engagement of the upper looped end 16a of the U-member in a closed slot 17 formed centrally in a key 18. This key 18 spans the body casing above the catch to project at each end through diametrically opposed elongated axial slots 19 formed in the body casing. The outer ends 18a of the key, 18 are arranged to seat in diametrically opposed slots which open through the top of a collar 20 which surrounds the casing body 1 and is axially slidable therealong. These diametrically opposed collar slots for receiving the key are partially closed at the ends so that the key is held thereby against radial or transverse movement in relation to the collar. To hold the key 18 against axial movement in relation to the collar, an annular peripheral groove 21 is formed around the collar near the top thereof to receive a circlip 22 which also enters end recesses formed in the key. This collar groove 21 is interrupted at a selected position 21a and the circlip 22 is appropriately foreshortened to ensure that the clip ends cannot move into register with an end of the key. The top of the'key 18 is provided with V-slots 18b to provide a lower seating for a coil spring 23 the upper end of which bears against the transverse wall part 2 of the body casing.

The lower peripheral wall part of the collar 20 is bevelled at 20a so that the core end of a bobbin engaged over the body casing can readily be centered on the collar 20 in bearing relationship therewith.

A resilient depending arm of the U-member 16 is spring urged against a rib 13 of the catch and is provided with a lateral hook or shoulder 16b for engaging the aforesaid rib and thereby rotating the catch through when the U-member 16 is moved in the appropriate direction, i.e. upwardly in the embodiment illustrated. This 90 movement of the catch is ensured by the pressure on rib 13 of the resilient U-member arm and will 3 take place irrespective of whether the catch is initially located in the transverse or the withdrawn position.

In the operation of the arrangement as described, the holder is rotatably suspended from a creel frame or other fixed part as aforesaid so that the core opening at the top of a bobbin can be pushed over the lower end of the body casing. For purposes of such engagement, the catch will normally be located in the withdrawn position. The bobbin is then pushed upwardly in the holder until the core end centres itself on and bears against the collar 20 whereupon further upward pressure of the bobbin causes the collar to slide axially along the body casing against the action of the spring 23. This upward movement of the collar carries along the key 18 and also lifts the resilient U-member '16 so that the hook 16b thereon engages a catch rib 13 and rotates the catch, which is now located within the bobbin core, into a transverse core retaining position as shown in full lines in Figure 1. In this transverse position of the catch, the projecting ends of the latter will underlie the usual internal shoulder provided within the bobbin core. Upward pressure on the bobbin can then be released so that the latter settles back on the holder with the catch ends seated under the aforesaid shoulder and the collar bearing under spring influence against the bobbin core end to hold the bobbin steady. To remove a bobbin core, the reverse procedure is adopted, the core being first lifted on the holder away from the catch to raise the collar and rotate the catch into the withdrawn position, whereupon the core can be readily withdrawn from the holder, the holder parts automatically being returned to the position for receiving a fresh bobbin core.

In the described construction it will be observed that the collar 20, key 18 and U-member 16 are constrained to move together in both axial directions of the body casing so that it is always possible to manipulate the catch either into or out of the retaining position by manually sliding the collar along the body casing in the appropriate direction. This is clearly of major importance if the spring actuation were to fail due to rough handling, internal obstruction or for any other reason.

I claim:

A holder device, for suspending a bobbin from the creel of a textile machine, having a spindle-like hollow body dimensioned to enter axially into the bobbin core, a catch mounted to pivot in the lower body end into and out of a transverse bobbin retaining position, a spring influenced collar slidably surrounding said body above said catch and movable along said body by an engaging bobbin and having a peripheral groove, a key having ends projecting through opposed axial 'slots in the body to seat in opposed slots which open through the top of said collar and have partially closed ends, circlip means engagingin the peripheral groove of said collar and in registering end recesses in said key, and an inverted resilient U-memb'er looped through a closed slot in said key whereby said U-mernber is constrained to move with said key and collar in both axial directions along said body and means on said U-member for actuating said catch as 'a result o'fvsaid axial movement, part of the collar groove being blocked and the circlip being appropriately foreshortened to ensure that the joint in the clip cannot be located opposite a key end.

References Cited in the file of this patent UNITED STATES PATENTS 2,095,518 Casablancas 'Oct. 12, 1937 2,408,674 Noguera ..t Oct. 1, 1946 2,833,490 Quint May 6, 1958

Images