US1315265A

US1315265A - Erwin walter

Info

Publication number: US1315265A
Authority: US
Publication date: 1919-09-09
Anticipated expiration: 1936-09-09

Description

` i. WALTER. GUIDE PLATE FOR THE BOBBINS 0F BRAIDING MACHINES.

APPLICATION FILED DEC. 3 1. |918. 1,315,265. Patentedsept. 9,1919.

tuuTED N sTATEs PATENT oEEioE.

ERWIN WALTER, OF MELLINGEN, AARGAU, SWITZERLAND, ASSIGN'OR T0 THE FIRM 0F ARGOVIA A.Gr., OF MELLINGEN, AARGAU, SWITZERLAND.

GUIDE-PLATE FOR THE BOBBINS OF RAIDINGr-MAGI-IINES.

Specification of Letters Patent.

Patented. sept. 9, 191e.

Application led December 31, 1918. Serial No. 269,042.

To all 'whom t may concern:

Be it known that 1, ERWIN WALTER, a citizen of the Republic of Switzerland, residing at Mellingen, Aargau, Switzerland, have invented certain new and useful Improvements in Guide-Plates for the Bobbins of Braiding-Machines; and I do hereby declare the following to be a clear, ull, and exact description of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being had to the accompanying drawing, and to letters or figures of reference marked thereon, which form a part of this specification.

The present invention relates to improvements in guide plates for the bobbins of braiding machines provided with shuttles traveling in grooves of the guide late. Ac cording to the present invention t e grooves .of the guide plate comprise two stages, the

one of which is designed in the conventional manner and Jforming a groove provided with an outer wall having the shape of an arc of a circle serves for receiving a shuttle having also arc-shaped walls, while the other stage serves for receiving a projection 'of -the shuttle.` This projection acts as a support for the shuttle when the bobbin passes from a groove into fthe succeeding one and prevents thereby any disturbing rotation of'the shuttle, and consequently of the bobbin, about the vertical axis passing through the center of gravity of the bobbin.

The invention will now benmore particularly described with vreference to the accompanying drawing illustrating by way of example a construction according to the invention. In this drawing:

Figure 1 is a vertical cross-section through a guide plate onthe lineI-I of Fig. 2, illustrating adjacent parts of the braiding machine in elevation.

Fig. 2 isa horizontal section on the line II-II of Fig. 1 looking downward in the direction of the arrows;

Fig. 3 illustrates a top view of a portion of the guide plate having grooves comprising two stages and a section `through a shuttle;

Fig. 1 shows partly a front view and partly a section on theline IVMIV ofFig. 3 of a bobbin and its shuttle and of. the ad-i jacent parte of the braiding machine;

Fig. 5 is a bottom view and j Flg. 6 1s a side view of the shuttle; Fig. 7 isa view correspondmg substantially to Fig. 3, but illustrating the bobbin in another position, and

Fig. 8 is a section on theline VIII-VIII of Fig. 7.

Referring to the drawings, 1 denotes the guide plate of the braiding machine having two circular grooves 2, 2. Each of the grooves 2, 2 comprises two stages. The lower stage 3 of these grooves is of convenv tional design and has an outer wall hav- `approximately equal to the height of the shuttle 6.

The outer wall 10 of the upper stage 5 has also the shape of an arc of a circle up to a point 11 where it passes into a straight wall portion 12, while the outer wall 1 of the lower stage 3 is of circular shape up to the point 17, where the groove ceases. The line of the wall portion 12 forms at the point 17 a tangent touching the arc of a circle of the wall 11, and the point 11 is the point of intersection of this tangent with the line of the outer wall 10.

The wall `12 constitutes the side face of a guide member 13 of angular shape. The arrangement is such thatn each of the two adjacent grooves 2, 2 is provided at its end with such a straight wall 12. The guide member 13 is preferably stamped out of a metallic plate, and it is inserted into a corresponding milled notch provided in the guide plate 1. The thickness of the metallic plate corresponds at least approximately to the height ofthe projection 7.`

The inner walls of the grooves 2, 2 pass at thepoints of transition of a groove into the neXt one overinto straight walls 14. 18 (Figs. 1, 2) designates drivers tree to rotate on a stud or bolt 19 rigidly secured in the guideplate 1. The greater portion of the periphery of each driver 18 hasteeth and all the drivers are in mutual engage-f ment..

The. remaining portion 'of each driver 18 has notches 22 which serve to receive and advance the spindles 20 for the bobbins 21. One of the drivers, for instance A in Fig. 2, is positively driven from the spur wheel 23 of the main machine drive by means of the

intermediate gears

24 and 25, the latter being fast on the shaft of the wheel A, and drives the two adjacent meshing drivers 18, Which. actuate in turn the drivers 18 meshing therewith, and so on.

The described construction works as follows:

When a spindle 2.0 passes with. its bobbin 2-1 from. one driver 18 into the next one, c.,

at the point where the groove ceases andV the. shuttle is no longer supported by walls (chiefiy the outer Walls) of the groove, the

.bobbin is, subjected to a kinetic energy due toa rotation. about the center of the driver or groove respectively.. Owing to. this kinetic energy to which the. bobbin is subj,ectyed.thel latter, andV therefore also the shuttle, has the tendency-in consequence of its; inertia. tending to keep. up said rotary ymovement-to, rotate further about its verv tical axis passing through the center of .gravity of said bobbin in the direction in which it would be causedtov rotate by the wallof` the circular groove when such a groove would be present.l At the same time, the. bobbin: has'l at,v theV point where the groove ceases the. tendency to. wander .farther in: the direction of the tangent touching the circle described by the vertical axis, passing through the center of gravity of thebobbin. When the guide plate admits a. rotation of the, bobbin about the vertical axis passing through its center of gravity,

Vsuch, a rotation prevents the. longitudinal axis` of theY shuttle from. coinciding with the longitudinal axis of the continuation of the grooves. and causes on the contraryv the front pointed end of theshuttle. to strike violently against, the oirter wall of the next groove. As a rule, thev shuttle rebounds. from said wall. and strikes against, thea inner wall of thegroove.. Owingy to this continued bounding, causing a. violent throwing about of the shuttle, the. walls. of' the; groove are. not

When thev bobbin, and consequentlyv the shuttle,..l`11as beenmoved trom the position illustrated 1n Fig, 3, in which-'the shuttle wanders 1n the:` lower stage, of vthe groove,

while the projection. Z shdeswithsmall friction along the outer wall of the upper stage 5 of the groove, into the position shown in Fig. 7, the bobbin starts to travel into the succeeding groove. The straight wall 8- of the projection 7 comes at this moment in contact with the straight wall 12 of the guide member 13 of angular shape. The shuttle guided at this moment also b y the straight walls 14 is then supported on both sides, so that it is prevented from rotating in the sense above mentioned, as the kinetic energy having` the tendency to bring about a rotary movement is taken up by the straight wall 12: of the guide member 13 and destroyed, so that the bobbin travels over a longer distance in a. straight direction in the direction of the tangent touching the outer wall 4 at the point 17, the projectionv of its shuttle being guided by the wall 12. coinciding with said tangent. Then the bobbin. has been moved past the point 17, where the wall 12 ceases, the shuttle is guided by the wall 9 of the projection 7 along the straight wall 14:; the front pointedv end of the shuttle has then been moved past point 16 of the next grofwe and the shuttle is guided into 4the next groove without its pointed front end striking against the wall of the last mentioned groove. j

Owing to the insertion. of the guide member 13 into.y the guide plate, the shape of an arc. of a circle may beY given to the outer wallsk of the two stages off the grooves resulting in a considerable advantage, as such a groove canbe easily milled, which is not the case with regard tothe groove of conventional shape having a straight. portion of the poi-nt where the bobbin wanders from one driver tov the next one..

that I claim now as my invention is.:

1.` In a braiding machine, in combination with a guide plate provided with grooves, of bobbin spindles, shuttles connected to said spindles and eachprovidedwitha projection, and. means` causing said bobbin spindles. to travel in the grooves of the guide plate, the grooves of said guide plate comprising twoy stages, the one of which lmving arc shaped lateral walls serves for receiving the shuttles having also, arc shapedI walls, while the other stage servesfor receiving the projection `provided onl the shuttle and acting as a support for the latter when the bobbin. spindle passes from one groove into the succeeding one, said projection preventing thereby any disturbing rotation of the shuttle and the bobbinv about the verticz-.l axis passing through the center ofv gi-avity of the bobbi.

2. In a braiding machine, in combination with a guide plate provided with grooves. of bobbiir spindles, shuttles connected to said spindles andprovided near their upper portion with a projection, and means tor causing said bobbin spindles to travel in the grooves of the guide plate, the grooves of said guide plate comprising two stages, the lower one of which having arc shaped lateral walls serves for receiving the shuttles having also anc shaped walls, while the upper stage serves ior receiving the projection provided on the shuttle acting as a support for the latter when the bobbin spindle passes from one groove into the succeeding one and preventing thereby a disturbing rotation ot the shuttle and the bobbin about the vertical axis passing through the center of gravity of the bobbin.

3. In a braiding machine, in combination with a guide plate provided with grooves, of bobbin spindles, shuttles connected to said spindles and provided near their upper portion with a projection, and means for causing said bobbin spindles to travel in the grooves of the guide plate, the grooves of said guide plate comprising two stages, the lower one of which having arc shaped lateral walls serves for receiving the shuttles having also are shaped walls, while the upper stage serves for receiving the projection provided on the shuttle acting as a. support for the latter when the bobbin spindle passes from one groove into the succeeding one, the height of the upper stage of the grooves corresponding` to the height of the projection and the total height of both stages corresponding approximately to the height of the shuttle.

4. In a braiding machine, in combination with a guide plate provided with grooves, of bobbin spindles, shuttles connected to said spindles and provided near their upper portion with a projection, and means for causing said bobbin spindles to travel in the grooves of the guide plate, the grooves of said guide plate comprising two stages, the lower one of which having arc shaped lateral walls'serves for receiving the shuttles having also arc shaped walls,while the up per stage having at the end of the grooves a straight portion serves for receiving the projection provided on the shuttle acting as a support for the latter when the bobbin spindle passes from one groove into the succeeding one, said projection having straight lateral walls being guided by said straight wall portion at the end of the stages so as to direct the shuttle passing out of a groove into the next one.

5. In a braiding machine, in combination with a guide plate provided with grooves, of an angular guide member inserted into the guide plate at the end of two adjacent grooves of said plate and having two4 straight lateral walls, bobbin spindles, shuttles connected to said spindles and provided near their upper portion with a projection having straight lateral walls, and means for causing said bobbin spindles to travel in the grooves of the guide plate, the grooves of said guide plate comprising two stages` the lower one of which having are shaped lateral walls serves for receiving the shuttles having also arc shaped walls, while the upper stage having at the end of the grooves a straight portion serves for receiving the projection provided on the shuttle acting as a support for the latter when the bobbin spindle passes from one groove into the succeeding one, said projection being guided when passing with its straight lateral walls past said straight wall portion at the end of the stages so as to direct the shuttle passing out of a groove into the next one, and the height of said angular guide member 4 being at least equal to the height of the projection and said straight lateral walls of the guide member constituting the rectilinear ends of the outer wall of the upper stage of the grooves.

6. In a braiding machine, in combination with a guide plate provided with grooves, of an angular guide member inserted into the guide plate at the end of twoadjacent grooves of said plate and having two straight lateral walls, bobbin spindles, shuttles connected to said spindles and provided near their upper portion with a projection having straight lateral walls, and means for causing said bobbin spindles to travel in the grooves of the guide plate, the grooves of said guide plate comprising two stages, the lower one of which having arc shaped lateral walls serves for receiving the shuttles having also arc shaped walls, while the upper stage having at the end of the grooves a straight portion serves for receiving the projection provided on the shuttle acting as a support for the latter when the bobbin vspindles pass from one groove into the following one, said projection being guided when passing with its straight lateral walls past said straight wall portion at the end of the stages so as to direct the shuttle passing out of a groove into the next one, said straight lateral walls of the guide member constituting the rectilinear ends of the outer walls of the upper stage of the grooves and having the same direc-tion as the tangent touching the are of a circle of the outer wall oi"` the lower stage of the appertaining groove at the point where said groove ceases.

In testimonv that I claim the foregoing as my invention, I have signed my name.

ERWIN IALTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, JJ. G.