US2533606A - Wire gauge - Google Patents

Description

A. G. NATZKE Dec. 12, 1950 WIRE GAUGE 2 Sheets-Sheet ,1

Filed Aug. 7, 1946 INVENTOR.

A. G. NATZKE Dec. 12, 1950 WIRE GAUGE 2 Sheec-Sheet 2 Filed Aug. 7, 1946 INVENTOR.

Patented Dec. 12, 1950 WIRE GAUGE Alfred G. Natzke, New York, N. Y., assignor to Lamar Slide Fastener Corp., New York, N. Y., a corporation of New York Application August 7,1946, Serial No. 689,065

10 Claims. (Cl. 33174) This invention relates to a device to be employed in connection with a step in the manufacture of slide fasteners.

In the following description, reference will be made to one particular method for the manufactlre of scoops or slide fastener elements for slide fasteners, but it is to be clearly understood that this is done solely for the sake of perspicuity, and that my invention and any apparatus embodying my invention can be applied to the manufacture of fastener elements by other methods. Likewise, a person skilled in the art, exercising mechanical ingenuity, could modify the details of my invention and adapt it to applications somewhat different from the one herein disclosed.

I preferably contemplate to apply my invention to a method for the manufacture of fastener elements which comprises forming on a wire or strip stock a series of embryo fastener elements, by passing the original wire or strip through a machine which will be designated, followin a practice common in the art, as the wire rolling mill. Likewise, the word wire will be used to designate any and all stock materials used in the manufacture of fastener elements, it being understood that this is done for the sake of brevity and implies no limitation, and especially does not imply that the cross section of the stock material must be circular.

As is well known in the art, a fastener element comprises a head and a pair of spaced jaws, which jaws are to be closed by clamping them on the edge of a tape to form a fastener stringer. The head comprises a projection and a mating recess on the opposite side.

As the wire is passed through the rolling mill, it is deformed to acquire the shape illustrated in Figs. 2 and 3, that is, it is flattened and a series of head projections and mating recesses are coined therein, which recesses and projections constitute the embryo elements. Said embryo elements closely follow each other, so that there is no waste involved in cutting the rolled wire into individual fastener elements.-

It is well known that the finished fastener elements must conform to certain requirements of uniformity in their shapes and dimensions, in

, order to assure a smooth and even operation of in extreme cases may render this latter inoperative.

Therefore, in order that satisfactory fastener wire.

elements may be produced by a shearing operation from a rolled wire which has defined thereon the embryo elements, said rolled wire also must conform to certain requirements. My invention is directed to a control device to be applied to the wire rolling mill, which device constantly gages the rolled wire, to see that it is properly formed, and if it is not properly formed, that is, if the irregularities appearin therein after the rolling operation exceed certain predetermined narrow tolerances, automatically stops the wire rolling mill and also signals to the operator which of the properties of the rolled wire is unsatisfactory, to permit prompt correction of the defect without any further investigation.

The device to which this invention relates is concerned with three propertie of the rolled The first is the overall width of the wire, identified as a in Fig. 2. The second is the overall height of the head projections, identified as b in Fig; 2. The third is the relative centering of the head projections and recesses. These latter, if the rolling operation is properly carried out, will be inexactly superimposed relationship, so that the heads of the finished fastener elements may engage each other smoothly and precisely, as required. However, if the rolling mill does not function well, projections and recesses will be laterally shifted with respect to each other, and the finished elements will be defective. In such a case, production must be stopped, and the defect repaired, so that head projections and recesses may occupy the same centered position on the rolled wire, and be truly mating.

Inasmuch as the device to which this invention relates gages the three properties aforementioned, and also stops the wire rolling mill or like machine if the same are not satisfactory, the device will be designated as a combined gage control mechanism, but the single word "gage will be often used alone for the sake of brevity.

It is the general object of this invention to provide a combined gage control mechanism for a wire rolling mill used in the manufacture of slide fastener elements, which gage constantly checks the overall width of the rolled wire, the height of the headsan'd the registering of the head pro- 'jections and head recesses, and automatically stops the rolling mill if anyone of these three factors does not conform topredetermined re quirements. I

Another object is to provide such a combined gage control mechanism which, while stopping the rolling mill as hereinbefore indicated, will l o signal to the operator and identify which of the three factors hereinbefore set forth is defective, thus enabling the operator to know at once where the trouble lies,

A further object is to provide a gage control mechanism of the character indicated which is endowed with a high sensitivity, and which is absolutely foolproof in its operation.

A still "further. object is to provide-a, gage control -mechanism of the character indicated :Fig. i5 1is zancross-section .of the mechanism of fF-ig."1, taken on the ,line -5-,5"of Fig.4, looking :in the directionzof the arrows.

Figzfids :azbottomgplansview -of the mechanism ofFig. 1.

Fig. '7 is :an elevational :view at an'enlarged scaleao'f adetail of Fig. 1.

*Referring. nowzin detailtothe-drawings, In indicates .a support or ibasecforthe gage control mechanism, which .can be-imountedaon or many .suitable way. attached to the wire rolling :mill or Tlike :machine to whichtthis invention is to be apaplied. 'The wire, indicated at' l l, enters-thez-gage between two superimposed rollers .l 2 and 1.3 :with the head-projections l4 thereof on'the top. The top -roller I2 is =-provided "with indentations 16 to --receive the projections t4, iwhereasythe ibottom-roller l3 ispprovided withprotuberances I! to engage the mating recesses .15. 'The engage- *ment of the protuberances and indentations :of .1,

itherollers with the recesses and projections respectivelyof the rolled wire maintains the rollers in alined relationship with these latter.

'Rigidly'attached to the base there iis-a stud or-pin t8 upon which is pivotally mounted a forked support l9 embodying two arms' 120. "The -arms* are rig-id witha shaft orpin 2l on:which thetoproller I2 is rotatably-mounted. Alternatively, the roller l2 could'be keyed' to the shaft'ZI and-this latter be rotatably supported in the'arms 20. A lever '22 is inserted into a seat 23 in one of the armsZ-B. A tension spring 24 is attached to the *endof lever 22'and also to the base I0, and :constantly urges the 'whole forked support l9 with" its; attachments downwardly. 'Thus the top roller 12 is resiliently urged towards the bottom roller 13 firmly to engage the wire H passing ,therebetween. Asupport 25 is attached to the bottom of thebase l0 and has a shaft or*pin:26 secured in invariable positioned relationship "thereto. 'The'pin ZG has the bottom roller l3 *fre'ely mounted thereon, but said bottom-roller, inadditionto being rotatableon the -shaft 26, is also 'slidably axiallythereon by a'limited amount. Alternatively, as :inthe case of-the toproller, the bottom roller 13 could be keyed to the shaft 26, andthis latter rotatably supported in thesupport 4'5, or any 'other equivalent arrangement could be employed. :At-any rate, the tworollers firmly :gr'ip the wire and rotate as it advanceseintorthe placed with respect to the top roller.

3| .to-each lever 21.

there is a bridge'32 fixed to the base Land-elecgage. The lateral position of the wire is determined by the engagement of its head projections with corresponding indentations of the top roller. As long as the embryo elements are properly formed, that is the head projections and recesses are relatively centered, the bottom roller remains in exact underlying relationship to the top roller,

inasmuchas it,,has protuberances which engage the head recesses of the wire. 7 projections are laterally displaced with respect to the head recesses, due to faulty operation of the .wire rolling mill, the bottom roller is forced to But if the head follow the head recesses and becomes axially dis- It is to be understood that the roles of the two rollers could be reversed, and that the details of the assembly could bemodifiedwithin the scope of the invention, as long as means are provided equivalent to those described for producing a lateral displacement of one roller with respect to the other in response to :any defective conformation of the embryo'fastener elements.

Two levers 21, pivoted at .28 to the'bottomof' the'base. l0 :have points'=29 engaging the bottom roller l3 at eachside thereof. The levers 21-=are connected to one another at the end opposite'the points 29, by a bridge 3!] pivotally connected at Between the two levers 21 tricallyconnected to -a wire schematically indicated at 33. Each lever 21 carries a contact 34 connected to a wireschematically indicated at 35. The'wires'33 and 35 form part of a circuit including a'signal light or other signal, which circuit is closed whenever either one of the contacts 34 touches the bridge 32. As long as the bottom roller l3 is exactly underlying the top roller [2,

neither contact 34 touches the bridge -32,-butas soon as the-roller l3 ceases to'be centered and shifts slightly, torone or the other side, one of th-e points 29 is urged away fromits normal position, causes the corresponding lever 21 to swing about its pivot ,28, making contact and lighting thelight.

The bridge .30 has a 'V -shaped recess 36 in the center thereof, against which bears aero'ller3l connected to a spring 38 of a micro-switch 39. When the levers, 21 are intheir normal position, that is in the position they assume when the roller 13 underlies the roller I2, said roller 31 engages said recess 3612.1 its central or deepest por- ..tion, and the micro-switch 39 does notmake con- .tact. However, if either lever 21 is caused to swing as explained above, the roller 3'! will ride up one of the two inclined planes which makeup the recess 36 .of the bridge 3!) and will move to the left, as viewed in Fig. 6, thus making contact in the micro-switch 39 and shutting ofi the motor which operates the rolling mill.

,.As s00n:as the rolled wire has passed between the rollers l2 and I3 and under the forked support L9, it passes under a rounded point40 carried on or, forming part of a lever 4| pivoted at 42 to a support block 43 suitably attached to the to top. as viewed in Fig. 1. A ,roller 41 bears against the; inclined plane 4.6,and is carried byan arm 48 attached to a spring 49 of a micro-switch 7 :150. iiIfhe armzfljsx-bearsiagainst an inclinfldgnlane engaged from each other.

position, illustrated in Fig. 7, the lever 52 touches,

screw 65.

5| of a lever 52 pivoted at 53 to the support 54 of the micro-switch 50. The arm 48 is provided at its left bottom edge with a hook projection 55. The lever 52 has a corresponding hook projection 56, best shown in Fig. 7.

' The rounded point 40 of the lever 4| rides over the head projections M of the rolled wire II. The weight of the lever itself keeps the point 40 in engagement with the head projections; it is to be understood however that independent means could be provided, were the device so constructed as to make this desirable, to assure said engagement, and said means could comprise a spring or springs. If the height of one of said head projections is less than the predetermined desired height, the point 40 drops, and its motion is transmitted with considerable amplification to the free end of the lever 4!. As a result, the inclined plane 46 urges the roller 41 to the left, as viewed in Fig. 1, to make contact in the micro-switch 50 shutting off the motor which operates the rolling mill. In general,.however, if only one or very few heads are defective, the lever 4| would not remain in its depressed position and the arm 48 in its leftwardly position, wherein it closes the switch, for a long enough time properly to actuate the switch. For this reason a lock is provided to hold the arm 48 in said leftwardly position, once it has assumed it, and this lock consists of the hook projection 55 of the arm 48, the hook projection 56 of the lever 52, and the spring 51 which constantly urges the lever 52 upwards. Once the arm 48 has moved far enough to the left for the two hook projections to engage each other, it

cannot return to the right unless it is unlocked by depressing the lever 52, against the action of the spring 51, until the hooks 55 and 55 are dis- When in its locked a contact 58 attached to a bridge 59. The bridge 59 is electrically connected to a wire schematically indicated at 60, while the lever 52 is electrically connected to a wire schematically indicated at 6 I Both wires 65 and GI are part of an electric circuit which includes a signal light, or other signal, different from the signal connected to the wires 33 and 35.

Normally the arm 48, by hearing against the inclined plane 5|, maintains the lever 52 in a position sufficiently depressed to prevent this latter from touching the contact 58. But when the dropping of the lever 4|, due to insuificient .height of a head projection, causes engagement of the two hook projections 55 and 56, as hereinbefore set forth, the lever 52 is allowed to rise enough to touch the contact 58, and the signal is energized.

After contacting the point 40, the rolled wire passes under a bridge 62. Said bridge 62 is adjustably mounted on the base l0 by means of pivot screws 63 attached to bracket 64 and adjusting The pivot screws 53 define alined centers about which the bridge 62 is pivotable to raise it or lower it by turning the adjusting screw 65. Said bridge 62 is provided internally with a shoulder 56 which forms a guide for one edge of the rolled wire, and is suitably positioned relatively toithe top roller so that the'wire is caused to follow a substantially straight line. Slidably mounted internally of the bridge 62 there The end of the block 61 wire is in contact with a plate 68 and this latter 1| to the frame If). "Said lever 10 has mounted thereon a fork 12 the two fingers of which straddle a pin 13 attached to a bridge 14.

The fork 12 is electrically connected to a wire schematically indicated at 15, while the bridge 14 and the pin 13 are electrically connected to a wire schematically indicated at 16. Wires "I5 and I6 form part of an electric circuit which includes a signal light or other signal, different both from the signal connected to wires 33 and 35 and from the signal connected to wires Bland 5|. A tension spring 11 operatively connects the lever 10 to the base l0, and constantly urges-the point 69 of the lever 10 against the plate 68, said plate against the block 61, and this last against the edge of the wire I I that is not in contact with the shoulder 66. The normal position of the lever it, that is the position it assumes under the urging of the spring 11, when the width of the rolled wire is within predetermined tolerance limits, is such that there is a slight clearance between the pin i3 and the two fingers of the fork 12, so that the circuit including the signal light remains open.

The end of the lever 10 opposite the rounded point 69 has a V-shaped recess 78 defined by two inclined planes. A roller 19 mounted on a spring 236) of a micro-switch 8| engages the recess 18. In the normal position of the lever 10, said roller is is situated in the central or deepest portion of the recess 18, and the micro-switch does not make contact. However, if the width of the rolled wire does not conform to specifications, that is, if it exceeds the aforementioned tolerance limits by being too large or too small, the block 61 will be forced away or allowed to move towards the shoulder 55 under the urging of the spring "11, as the case may be. The point 69 of the "lever Ill will follow the motion of the block, and consequently the lever Iii will swing away from its normal position in one or the other direction. Then the roller 19 will ride up one of the two inclined planes which define the recess 18, will be forced to the left, as viewed in Fig. 6, and will cause the micro-switch 8| to make contact, shutting off the motor which operates the ,wire rolling mill. Concurrently one of the two fingers of the fork '52 will contact the pin 13, closin'g'the circuit of the wires 15 and 15, and energizing the signal. It is obvious that arrangements other than the one described could be used to swing the lever 10 in response to any departure of the width of wire from the predetermined permissible limits.

It is seen therefore, that the present invention provides in one unit a gage control, device for the three properties of the 'Wire' discussed "at the beginning of this specification, namely, the width of the Wire, the height of the heads, and the registering of the recesses and projections which form the heads. A defect in any one of these three properties will result in automatically stopping the wire rolling mill, and also in signalling to the operator which of the three properties is defective, since a different signal isprovided for each one of them.

While I have taken-into account defects in'the width of the wire or iii-the registration of the head projections and recesses in either of the two possible directions, that is, while I contemplate that the wire may be eithertoo wide or too narrow and that the head projections may be shifted either to the right or to the left of their centered positionwith respect tothehead recesses,

with a rounded point 69 of a lever 10 pivoted at I consider that the only defect in the height "of aminothe :headsto be takeniinto account is an insuffition-and bearing the teachings of this specification in mind, could so modify the device. as to render it-sensitive .also to any excess in the height of the heads, .and such .a modification -could be accomplished by the exercise of .no more than mechanical skill.

In the preferred embodiment described, the partiof thegage whichresponds to defects in the height oflthe heads hasbeenprovided with alock arrangement to allow it to operate effectively no matter how short the defective portion of the wirewmay be. Theremaining parts of the gage ,ihave not been ,provided with any such lock arrangement, for the reason that .in practice Ilfind rangements-could be introduced in the parts of lthe .gage which respond to defects in the width o'f the wire or in theregistration of the head projections and. recesses, and such lock arrangementsimig'htbe similar in structure to the. lock arrangement described or might consist of equiv- .alent mechanical devices, such as may be contrived by a person skilled'in the art being in p05- :sessionof teachings of this specification.

,ltfis -to be understood that, for any of the propertiesof the Wire to which this invention is r lated, thereare certain predetermined tolerances within which the wire is acceptable.

ywillbe designed correspondingly to said prede- The gage termined tolerances, and variations in said toierances will result in variations in the, particular proportions and dimensions -of the various parts of the device, such as thevarious levers and associatedmeans. These variations are a matter of .judicious design and can be provided by a gitndinall-y moving said deformed wire, a ,first roller .means engaging -th'el head {projections .of said embryo slide fastener elements, .a second roller means engaging the head .recessesof said embryo slide fastener elements, said respective roller means normally being in lateral alignment and one of said roller means being axially movable with respect 'to the other, said first and sec- -.ond roller means maintaining a normal positioned relationship as long as said head projections and the corresponding .head recessesare centered with respect to one another and becompersonskilled in the art. It is not-thought neces-" :saryv therefore to discuss them at length here. 'Itis noted, however, that a device according to this invention can be rendered as sensitive as may be desirable inpractice under any possible conditions, by properly dimensioning and arranging the various component parts thereof.

It .is understood that Whenever the wire rolling mi'll stops as a result of the operation of this gage, the defective part of the roiled wire can'be will be'finally produced, and, knowing what the defect is, proper steps can be taken to correct the same. As to such steps, they are not material in discussing this invention and need not be gone into 'here.

adaptations .may be .made therein by persons skilled in the art, without departing. .from the "spirit :of-the invention or exceeding the :scope of the appended claims.

-,-. :1. Inca mechanism of the character described for gauging the alinement of the headprojection's Land the head recesses of connected embryo .scoops, which projections and recesses are profduce'dion opposite sidesof a continuous length nf enre by deformation -thereof,means .for lonfeliminate'd so that no defective fastener elements ing relatively displaced by an embryo slide fastener element when said head projections and the corresponding headrecesses thereof 'are not so centered, and lever means operatively associatedwith .at least one of said roller means, said lever, means .being displaceable from .a, normal positionin response to a relative displacementgof said roller means.

2. In ,a mechanism of the character described for gauging the alignment of the headprojections and the head recesses of connected embryo scoops, which projections and 'recessesiare produced on oppositesides of a continuous length of Wire by deformation thereof, means for longitudinally moving said deformed wire, :a first roller means engaging the head projections of said embryo slide 'fastenerelements, a secondroller means engaging thehead recesses of said enibryo slide fastener elements, said respective roll er means normally being in lateral alignment and one of said roller means being axially movable'with respect to the other, resilient means for 'urgirrg said'first and second roller means towards one another firmly to grip the wire therebetw'e en, said first and second roller means maintaining a normal positioned relationship as long as said headprojectionsand the corresponding head recesses are centered with respect to one another and becoming relatively 'displaced by an embryo slide fastener element when said head projections and the corresponding head recesses thereof are not so centered, and lever means operatively associated with at least one of said roller means, "said lever means bein displaceable from a normal position in response to a relative displacement of said roller means. t

3. In a mechanism of the character described for gauging the alignment of the head projections and the head recesses of connected embryo scoops, which projections and recesses are produced on opposite sides of a continuous length of wire by deformation thereof, means for longitudinally moving'said deformed wire, at least one roller having projections along the periphery thereof engaging the head recesses of said embryo slide fastener elements, at least one'second 'roll'er having recesses along the periphery there- "of engaging'the head projections of'said embryo slide'fastener elements, said first and'second rollrespe'ctto one another by an embryo slide fastenerelement when said head projections and the corresponding headrecesses thereof "are not so centered,-'and'1ever means operatively associated with at least oneof said rollers, said lever means being displaceable from'a normal position in response to relative displacement of saidtrollers.

'4. Ina mechanism of the character described for augingthe alignment of the headlplfo'jections "and'the head recesses of 'connectedembr'yo scoops, which projections and recesses are produced on opposite sides of a continuous length of wire by deformation thereof, means for longitudinally moving said deformed wire, a base, a first roller rotatably attached to said base and having projections along the periphery thereof engaging the head recesses of said embryo slide fastener elements, a second roller rotatably attached to said base and having recesses along the periphery thereof engaging the head projections of said embryo slide fastener elements, one of said rollers being axially slidable with respect to said base, said first and second rollers maintaining a normal aligned position relationship as long as said head projections and corresponding head recesses of an embryo slide fastener element are centered with respect to one another, and said axially slidable roller being displaced away from a normal position by an embryo slide fastener element when said head projections of said embryo slide fastener elements and the corresponding head recesses thereof are not relatively centered, means for urging at least one of said rollers towards the other firmly to grip the wire therebetween, and lever means associated with said axially slidable roller, said levermeans being swingable from a normal position in response to sliding of said axially slidable roller.

5. In a mechanism of the character described for gauging the alignment of the head projections and the head recesses of connected embryo scoops, which projections and recesses are produced on opposite sides of a continuous length of wire by deformation thereof, means for longitudinally moving said deformed wire,a base, a first roller rotatably attached to said base and having projections along the periphery thereof engaging the head recesses of said embryo slide fastener elements, a second roller rotatably attached to said base and having recesses along the periphery thereof engaging the head projections of said embryo slide fastener elements, one of said rollers being axially slidable with respect to said base, said first and second rollers maintaining a normal aligned position relationship as lon as said head projections and correspondin head recesses of an embryo slide fastener element are centered with respect to one another, and said axially slidable roller being displaced away from a normal position by an embryo slide fastener element when the head projections and the corresponding head recesses thereof are not relatively centered, resilient means for urging at least one of said rollers towards the other firmly to grip the wire therebetween, and lever means pivoted in said base and having portions laterally en- 4 gaging said axially slidable roller, whereby said lever means are swingable in response to axial motion of said axially slidable roller.

6. In a mechanism of the character described for gauging the alignment of the head projections and the head recesses of connected embryo scoops, which projections and recesses are produced on opposite sides of a continuous length of Wire by deformation thereof, means for longitudinally moving said deformed wire, first roller means engaging the head projections of said embryo slide fastener elements, second roller means engaging the head recesses of said embryo slide fastener elements, said first and second roller means maintaining a normal positioned relationship as long as said head projections and the corresponding head recesses are centered with respect to one another and becoming relatively displaced by an embryo slide fastener element when said head projections and the corresponding head recesses thereof are not so centered, lever means operatively associated with at least one of said roller means, said lever means being displaceable from a normal position in response to relative displacement of said roller means, a cam surface operatively connected to said lever means, a. follower operatively associated with said switch means and engaging said cam surface, said lever mean when they become displaced by a predetermined amount from their normal position actuating said cam surface to displace said follower.

7. In a mechanism of the character described for gauging the alignment of the head projections and the head recesses of connected embryo scoops, which projections and recesses are produced on opposite sides of a continuous length of wire by deformation thereof, means for longitudinally moving said deformed wire, a first roller means engaging the head projections of said embryo slide fastener elements, a second roller means engaging the head recesses of said embryo slide fastener elements, said respective roller means normally being in lateral alignment and oneof said roller means being axially movable with respect to the other, said first and second roller means maintaining a normal positioned relationship as long as said head projections and the corresponding head recesses are centered with respect to one another and becoming relatively displaced by an embryo slide fastener element when said head projections and the corresponding head recesses thereof are not so centered, and lever means operatively associated with at least one of said roller means, said lever means being displaceable from a normal position in response r to a relative displacement of said roller means,

and means operatively connected with and actuated upon the displacement of said lever from normal position for signalling such movement.

8. In a mechanism of the character described for gauging the alignment of the head projections and the head recesses of connected embryo scoops, which projections and recesses are produced on opposite sides of a continuous length of wire by deformation thereof, means for longitudinally moving said deformed wire, at least one roller having projections along the periphery thereof engaging the head recesses of said embryo slide fastener elements, at least one second roller having recesses along the periphery thereof engaging the head projections of said embryo slide fastener elements, said first and second roller maintaining a normal positioned relationship as long as said head projections and the corresponding head recesses are centered with respect to one another and being axially displaceable with respect to one another by an embryo slide fastener element when said head projections and the corresponding head recesses thereof are not so centered, and lever means operatively associated with at least one of said rollers, said lever means being displaceable from a normal position in response to relative displacement of said rollers, and means operatively connected with and actuated upon the displacement of said lever from normal position for signalling such movement.

9. In a mechanism of the character described for gauging the alignment of the head projections and the head recesses of connected embryo scoops, which projections and recesses are produced on opposite sides of a continuous length of wire by deformation thereof, means for longitudinally moving said deformed wire, a base, a first roller rotatably attached to said base and having projections along the periphery thereof engaging the ersgbeingvaxially slidaple with r sg cytqsgiq g said: first and secondrqlleys maigtajrfipg; 2 mal l e DQSiQ Q QIaFiQIi P lbng as aid s p j c s 1 cprresnqndi j 29W; 93" 8 ct anembryo slidq fgsjen@1 glemegnt ayg ce v with rgspect to one. a q he a 5. a j liy l abl'e roller being displa qeq ayqay from normal position by an embryo slide fasteng'er 'qlmiit when the head pr ojeptions of said embryo slid f s e re mfints and he. q rrvsp d n d e esses hereoflare n t lg iv ly. en e ean for urging at 1 e ast, qne q f; sgiql IQllejts towards the" other finml o r hev ir l th b w and levgr mea s sspqia ed with ai Xiflll im le o ler, aidg qv n m vaxzshein win' abl ma a n m osit o llesnql l ev 1.7 -s -ri xially l d e pllex, m ansqp v l c91 nected W jman tua c 4119 he; ipl q fi ifif of sai leve mm 9mm VP Siti nY 9 S gn i uch mov m t r a mec an sm t-. hg, h ia nen descrihgd for au in hg a i nmfinfi Q. 1 d rpi q m pdith headx ce gofi qnn q d em ty vscq s wh m pr i. n and r cqsfiqs are pr uc d on o pqsitgslclfi of; a umin 1 gfl fi of e by d io m i r hQ QQfi; m zli r" sit n moy n aid 9rn2Qd W fir z 9l Q in ens eng in gthg head ojgc iq'ns of id: nh yb ide fa tenext elements. 99 1, 11 m ans enga in the. he d-z ne 01 d embr p. i e e emi nti aii rstandfifiwlld r l r 'm a n glg jaion hinas 1mg R ERENCES ITE The following. reffirences am. of lieqord; in, the

file Of this, patent:

UNITED STA'EEQBATEN'IIS Nam?- Niqolgt Rpm n N mber. M 4

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