US1558039A - Braiding machine - Google Patents

Description

G. PERRON BRAIDING MACHINE Filed June so, 1922 s sgeets-sheet 1 V// a N Oct. 20,1925. 1,558,039

G. PERRON BRAIDING MACHINE Filed June 30. 1922 5 Sheets-Sheet 2 Oct. 20, 1925.

G. PERRON BRAIDING MACHINE Filed June 30, 1922 5 Sheets-Sheet 3 G. PERRON BRAIDING MACHINE Filed June 30, 1922 5 Sheets-Sheet 4 ()ct-v 20, 1925- G. PERRON BRAIDING MACHINE Filed June 30, 1922 5 Sheets-Sheet 5 Patented Oct. 20, 1925.

UNITED STATES PATENT 0 F F [C GUSTAVE rnnnon, or" rears, FRANCE.

BRAIDING MACHINE.

T 0 all whom it may G07tff6772-l Be it known that I, Gnsrnvn Patron, a citizen of the Republic of France, residing at 9 Avenue Taillade, Paris, Seine, France, have invented certain new and useful. Improvements in Braiding Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in the construction of braiding machines used in the manufacture of laces of various kinds. It makes it possible to build a machine, which unlike the existing machines of the same kind, works at a high speed and gives a great output, without affecting the quality of the goods, even when using materials of small strength such as very fine silk or artificial silk.

The increase in the speed of the machine is obtained owing to the system of spindles used and to the arrangement of the latter in the machine, which arrangement makes possible a large number of passages of spin dles per minute, owing to the facility of placing the spools and of threading the end; of threads to the system of regulating the tension of each thread and finally to the provision of an electrically-operated automatic throwing out of gear mechanism.

In a machine designed according to the present invention, the spindle does not circulate by sliding on the table, but. on the contrary, is constantly supported by movable parts called horn gears which drive it in their movement. The switching or shunting of each spindle at the points of passage between the horn gears is produced automatically owing to parts secured either to the table or to the spindle of the said horn gears.

The spindle is moreover held in a perfect manner so that even under the action of the traction or pull exercised by the thread, there is no risk of its jamming during its movement, a drawback which is very frequent in the existing machines.

The said spindles are finally mounted in such a manner that, whatever be the point of the machine Where one of the spindles is stopped, it can be taken off and put on again very easily and very quickly.

The spool holder mounted on each of the spindles, is built so as to enable each spool to be put in place extremely quickly, and it Serial No, 571,922.

comprises a lever device for stretching the thread and regulating the tension, which acts in a reliable manner at high speeds.

The accompanying drawings given by way of example show a machine built according to the present invention, which ma chine has 25 spindles but could of course have a diiferent number of them, according to the kind of goods to be manufactured.

Figure l is a plan of the said machine,

Figure 2 is an elevation,

Fig. 3 is a vertical sectional view showing more particularly the automatic clutch control of the machine and the construction and mounting of the horn gears.

Figures 4 and 4 are detail views showing on a larger scale the mounting of a spindle on a nut.

Figures 5 and 6 show the two methods in which a spindle is switched or shunted.

Figures 'T9 are views in plan of the parts .used for switching.

Figures 10 and 11 show on an enlarged scale in front elevation the mounting of the spool holder and of the tension lever, the various parts being shown in two different positions.

Figure 12 is a side elevation of the latter device.

Figure 13 shows in perspective the part of the same device called a locking pawl.

The machine comprises a frame 1 in the shape of a cup, provided with feet or liX- ing lugs 2 and supporting the whole of the parts. 011 the said frame are mounted vertical pins 3 on which rotate the horn gears intended to operate the spindles. These gears comprise a body at to which is secured a toothed wheel 5 by means of studs 6. Each body is provided with two flanges-an upper flange '7 and a lower one 8, in the edge of which, opposite each other, are provided recesses or notches 9 and 10 having the shape of an arc of a circle. The number of these notches is determined by the kind of work to be done. In any case, the said number is such that when two adjoining gears rotate, the respective notches of the said two gears are successively brought opposite each other so as to form a perfect circle, in the interior of which is placed the rod 11 of the foot of the spindle.

The foot of the spindle comprises a shuttle 12, a rod 11 and a guide plate 13. The shape of the shuttle 12 is such that it can circulate in the track 20 (Figures and The sides of the shuttles are formed on the arcs of circles, having respectively the same centers as the above mentioned pins 3 of two adjacent horn gears (Figures 5 and 6). The said shuttle 12 rests on the upper flange 7 of the horn gear.

The rod 11, as already stated. is mounted in the recesses 9 and 10. The guide plate 13 is secured to the shuttle 12 and is used for switching the spindle. During the operation of the machine. the foot of the spindle is held in place by a washer 1t and a spring 15 which rests on the one hand on the above washer 1st and on the other hand on a pin 16 with a notch. The latter pin has the shape shown in Figure at, which shape prevents any accidental detachment under the action of vibrations of the machine. In Fig. 1 only two spindles. or carriers, are indicated in order not to com plicate the drawing any more than is necessary. In practice the number oi these spindles will be determined by the character of the work to be performed.

A plate 17 suitably cut away around the lower flanges 8 of the horn gears is secured to the frame, and is adapted to hold and guide the lower part of the foot of the spindle, whilst a table 18, cut out in a suit able manner and supported by columns 19. forms round the upper flanges 7 of the horn gears the track 20 for the passage of the shuttles 12.

To the table 18 are secured. opposite the switching points of the spindles. parts 21 of a suitable shape which act on the guide plates of the spindle in order to guide or direct them (Figures 1 and 5). In this case, he spindle passes. during its travel. from one gear to another. In the event of its being necessary to cause the spindle to rest on the same gear. the proper direction is imparted to the spindle by a. fixed or stationary part 2 secured to the spindle 3 01 the gear. which part acts on the guide plate 13 ot the foot of the spindle. The correspondingpart 21 is then taken oii' or raised to an inoperative position.

The spool-holder comprises a bracket (Figures 10- 12) secured to the spindle foot by means of two screws which also hold the guide plate 13.

On the said bracket is secured a pin 24 on which is placed the spool 28. This spool is held in place by a spring blade 25 which can swing at in a vertical plane at right angles to the spindle 24. The said spring rests on a shoulder 27 provided at the end of the pin 24:, so that the spool 28 is held between the bracket 23 and the spring 25, without however the latter being able to rub against the disc 29 of the spool.

To the bracket 23 is pivoted at 30 a of of stretching or tension lever 31, the shape which can vary according to the kind raw material to he used, and which acts the thread owing to the helical spring secured at to the said lever; and at to the bracket.

The hooking to the bracket 23 of the end of the said spring could be effected. at one of the different orifices 3 provided on the projection of the bracket The lever 31 is guided in its movements by the walls of a groove 23 of the bracket A locking pawl 36. shown in perspective in Figure 1 5. is also pivoted at 3'7 to the bracket 23. This pawl is controlled by the action of a spring 38 secured, on the one hand, to the pawl at 31). and hooked on the other hand into one of the orifices 4-0 of the projection +21 of the bracket 23.

This locking pawl has an extension or tail 42 which enga es with notches 43 provided in the flange of the spool 28 which is a metal spool.

The bracket 23. the tension lever 31 and the locking pawl 36 are provided respectively with an eyelet 45, 4E6 and at? for the passage of the thread coming from the spool.

The driving of the various parts of the machine is eti'ected in the following manner:

The gear wheels 5 rotating about the fixed pins 3 are in engagement in couples. The last of the series is in engagement with a pinion 48 keyed to a vertical spindle Gn the latter mounted one of the elements of a claw clutch 50. the other element of which is car ied by the devicewhich transmits the driving power to the machine.

In the drawings. the said device comprises two bevel pinions 51 and the latter being secured to a short spindle to which is secured the driving puller These elements are su 'iported by a suitable part 55 secured to the trruie. The claw coupling 50 is conil'tiilOil by r. 4 oi a lever 56 pivoted at 57. he above -ntioued spindle 4-9 operates also the driving apparatus mounted on the bracket secured to the table.

This apparatus. of any desired type, comprises for instance a worm 59 and a set of wheels 6O. 61. G2 transmitting the movement of the spindle -19 to the sleeve 63. The lace which is formed in the operatlon or the machine passes over the rotating sleeve 6? and is delivered thereby to any suitable winding device.

The bracket 58 comprises an arm 64, at the end of which is mounted the central roller on which is eiiected the braiding of the lace.

The electrically operated device for throwing out of gear comprises the following parts (Figure 3) The lever 56 has a tenon 66 which acts IOU on a rack or cam 67 of a small lever 68 pivoted at (if) to a part secured to the frame of the machine. A spring 71 has the tendency always to bring back the lever (58 and to keep i: in contact with the tenon 66. To the said lever (38 is pivoted at 72 a plate 'T-l, one end T3 of which can come within range of a linger T-t provided on the fixed element of the coupling 50, and the other end 73 oil" which strikes the part ot' a lever in pivoted at "IT to the part 70.

This lever 6 carries a soft iron plate 78 arranged opposite an elcctro-niagnet '79 and is cont-rolled by a spring 80. The lever 66 is always pulled upwards into the disenga ed position by a spring 81. In the engaged position ot' the lever 56, the latter is in contact with a spring blade 82 carried by the frame but insulated from the latter. The conductors of the electro-magnet terminate, one at the spring 82, and the other at one of the poles of any desired source of electricity.

A metal ring 83 is mounted above the table 18 concentrically with the latter, so that the tension levers 31 come into contact with the same when the threads break.

This ring is insulated from the mass or body ot the machine and connected to the other pole of the source of electricity.

The working of the loom is as Qtollows:

The lever 56 being in the engaged position, the movement of the driving pulley 54-. is transmitted to the pinion 48, and the gear wheels 5 cause the horn gears to rotate in a uniform manner. The spindles locked in the notches 9 and 10 of said gears move in the track 20. When a spindle reaches a switching point. it must either pass from one gear to the next one (Figure 5), or remain on the. same gear (Figure 6).

In the former case (Figure 5), the spindle being driven by the right hand gear, passes to the left hand nut. owing to the action exercised by the part 21 on the pointed rear part o1 the guide plate 13. which results in the spindle being slightly turned about itself. and in the point 12 of the shuttle 12 being switched or turned in the direction of the portion 20 of the passage or track 20.

In the second case (Figure 6), the part 21 being removed. the part 22 secured to the pin 3. will act on the corresponding part of the plate 13. so that the spindle will turn about itself and the point 12 will engage with the part 20" of the passage 20.

Instead of taking off the part 21, it can be raised above the table 18 by means of a stay so that the plate 13 can "freely pass under it.

It will be understood that by giving the plate 13 a suitable shape such as 13' or 13" (Figures 8 and 9), and by combining these various models of plate with the parts 21 and 2;, it would be possible to vary at will the travel of the spindles, according to the work to be done.

The spool 28 on being put in place, is held by the part 12 of the locking pawl 36. The thread is carried successively through the eyelets 4 16, 45 and the said eyelets could be moreover split eyelets facilitating the threading of the ends of the threads.

ll hen the thread is pulled, the lever 31 is brought nearer to the centre of the spindle, and on coming into contact with the locking pawl 36, acts on the latter (Figure 11), swings it, which results in disengaging the part 42 from the notches 43 of the disc or flange etaot the spool, and in releasing the latter. The thread is then unwound, but it is at once stretched again by the lever 31 which, under the action of its spring 82, is moved away from the pawl 36. The latter, under the action of the spring 38, resumes its position and locks the spool. After which, the withdrawal of the thread continues, the tension being exercised by the lever 31: the said tension could be regulated by modifying the spring 32.

It the thread breaks. the spring 32 pulls violently back the lever 81 and presses it against the circular riin 83. The electric circuit containing the electro-niagnct 79 is then closed through the mass of the machine.

When the circuit through electromagnet '79 is thus closed lever 76 is attracted against the tension of spring withdrawing its lower end from the ta l 73 0t lever 73 which rotates bringing ii V end 73 into the path of cam finger 74. Cam finger '74 will then push lever 73 to the right. looking at Fig. 3, rotating lever 68 connected therewith about the axis 69 and withdrawing latch 67 from tenon 66 on lever 56. Lever 56 being thus released will rotate under the action oi spring 81 the cross pin 8-"! sup 'iorted thereby operating to reset lever 72 with its tail e11- gaging under the end or" armature lever 76. magnet 79 being simultaneously deenergized because ot the breaking of its circuit at contact spring 82. When the thread has been repaired lever 56 is moved manually to clutch spindle 4-9 to gear 51. tenon 66 in this movement snapping under latch 67, thus holding lever 56 in clutch engaging position.

In addition to the advantage of being able to work at a high speed, this machine has other advantages, the chief among which are as follows:

Any spindle. whatever be the place at which it is at the moment. can be quickly dismantled owing to the facility of access to the pin 16, access provided between the table 18 and plate 17.

The gear wheels are completely concealed which eliminates all risk of accidents.

Furthermore it is possible to vary the travel of the spindles with respect to the horn gears not only by means of switching parts or points, but also by modifying to a certain extent the proportion between the diameters oi the gear wheels driving the nuts, without changing the position of their axes. in that way, two adjoining nuts can rotate at a ditierent speed, and in such a case they comprise a diilerent number of notches. which numbers are however fairly close and generally (litter only by one.

The safety oi working oi iinally ensured owing to the electric throwing out of gear. The looln is much more noiseless than the existing looms. and its wear is very small. as ample lubrication can be easily obtained. I do not claim herein the means tor auto matically throwing the machine out oii' operation and the spool holder and associated devices. The 11 cans for throwing the machine out of operation is claimed in my divisional application, Serial No. 676.81%, filed Nov. 2%. 19:23; and the spool holder and associated devices are claimed in my divisional application, Serial No. 676.813, filed Nov. 2%, 1923.

What I claim is:

1. In a braiding machine, a table, a series of horn gears rotatable thereon. means for rotating sad gears in unison, spindles driven by said gears. a guiding piece secured to each spindle. stationary guides adapted to coact with said guiding pieces and direct said spindles "from one horn gear to the adacent horn gear, and other stationary guides adapted to coact with said guiding pieces and maintain the spindles on the horn gears with the machine is which they are associated when such coaction takes place.

2. In a braiding machine. a table, a series oi horn gears rotatably mounted thereon. means for rotating said gears in unison. spindles driven by said gears. a guiding piece secured to each spindle, stationary guides adapted to coact with said guiding pieces to direct said spindles from one horn gear to the adjacent horn gear. and alternative stationary guides adapted to coact with said guiding pieces to maintain the spindles on the horn gears with which they are associated when rich coaciion takes place. said guides being movable to inoperative positions, whereby the paths of the spindles may be changed at will.

3. In a l. 'aiding machine. a table. a series of vertical pins lined thereon, a horn gear rotatable on each ot said pins. means for rotating said horn gears in unison, a plate secured over said table and cut away around said horn gears to form circular tracks having a common p rtion between said gears spindles driven by said horn gears having shuttles travelling in said tracks, a guiding piece secured to each spindle above said table, guides secured on said table adapted to coact with said guiding pieces to rotate said spindles and direct said shuttles into adjacent tracks. and other guides secured on said pins adapted to coact with said guiding pieces to rotate said spindles and direct said shuttles into the same tracks in which they are travellin in testimony whereof I atiix my signature.

GUSTA i' E lliltlit) X.

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