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Publication numberUS1988219 A
Publication typeGrant
Publication dateJan 15, 1935
Filing dateJan 4, 1933
Priority dateJan 4, 1933
Publication numberUS 1988219 A, US 1988219A, US-A-1988219, US1988219 A, US1988219A
InventorsSamuel Segal
Original AssigneeSamuel Segal
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tweezer
US 1988219 A
Images(3)
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Description  (OCR text may contain errors)

Jan. 15, 1935. SEGAL 1,988,219

TWEEZER Filed Jan. 4; 1953 s Sheets-Sheet 1 A TTORNEY.

Jan. 15, 1935.

S. S EGAL TWEEZER 3 Sheets-Sheet 2 Filed Jan. 4, 1955 ATTORNEY.

S. SEGAL Jan. 15, v193s.

TWEEZER Filed Jan. 4, 1935 3 Sheets-Sheet 3 4 INVENTOR.

ATTORNEY.

Patented Jan. 15, 1935 UNITED stares ATEN FFICE The subject matter of this inventionis generally concerned with gripping and extracting instruments and more particularly. is directed to a manuallycontrolled double wing self releasing tweezer for extracting hair.

. In the performance of tweezers of ,thecharacter referred to, it is very desirable to maintain sufficient pressure on the hair gripping and extracting jaws during their rearward extracting stroke upon the manipulation of ,the arms or wings of the tweezers. In practice howeverit has been found that the pressure of the gripping jaws-on a hair to be extracted was practically at a maximum only at the beginning "of their rearward stroke. After the beginning or during therearward stroke of the jaws; the holding pressure on the hair gripping surfaces thereof lessened with the result that the initial'grip on the hair to be extracted became-correspondingly less as the extracting stroke progressed such that although the jaws were movingrearwardly jtoextract the hair, the jaws failed to effectively hold and'grip the hair. With this difiiculty experienced, the hair to which the tweezer was applied would not be extracted dueto the ineffective gripping as a result of slippageof the tweezer jaws over the hair. It is therefore a particular object of the invention to provide an improved tweezer or manually actuated instru 'ment'in which the jaws are maintained-at an efiective gripping pressure throughout their rearward and complete extracting stroke 'to prevent slippage of jaws over the hair to which the tweezer is applied." I x Otherobjects, advantages andfeatures of invention and'discovery; appear from 'the"accom paying drawings, the ,subjoined: description and the appended claims. i

In the drawings which'iilustrate several embodiments of theinvention. 1 i

Fig. 1 is a front elevational'view of the tweezer according to the invention-illustrated partly *in section and expandedy'Fig. 2 isia 'view" closely similar to Fig. 1 showing the: tweez'er collapsed; Fig. 3 is a section across the line=3=-3 of 'Figxl; Fig. 4 is a section on the line 4 i. of Fig. 2'; Fig. 5 is a sectionjon line 5+5-of Fig. 1; 6 is a fragmentary View in perspective of an upper portion of a manipulating wing or arm of the twe'ezer. 1

Fig. 7 is an elevational view of a tweezershowing the retainer disposed within the cylindrical guide for the jaws depressed preparatory to the insertion and lockingof the upper portion of the Wings within openings or sockets at the upper end of the guide; Fig. 8 is a fragmentary view in elevation of a tweezer according to the earlier illustrations, but including an adjustablememher for regulating,the'tension of the pressure spring disposed between the upper portion of the #5 jaws and thewings.

Fig. 9 shows an elevational View and in part in section of a tweezer having thepressure springs disposed obliquely with respect to the jaws and wings; 10 is-a fragmentary view of a tweezer i 10 showing a modified construction in which pres:- sure is applied to the sides of the jaws by the assistance of a U shaped spring; Fig. 11 shows a, fragmentary portionof a tweezerin which the companion jaws are provided with disc shaped 15 members to aid the gripping 0f thehair and to facilitatethe discharge after extraction; Fig. 12 is a fragmentary enlarged view, partly in" section, of the lower portion of the jaws shown-in Fig--11; Fig. 13 is a view taken on the line 13-43 20 in Fig. 1-2; Fig. l lis a viewsimi-larjto Fig. 12 but illustrating a modified form of hair grippingdisc; Fig. 1 5 .is a View taken on the li-ne15*-15 in Fig.14'.

Fig. 16 illustrates a' vertical elevation, partly in section, of 32. :modified tweezershowing the adjustable stud within the guide in an extreme lowered-position topermit the maximum retraction of the'jaws; Fig. 17 is a;,view similar to Fig.

16' but with the stud adjusted to an opposite 0 extreme position to prevent retraction of 'the jaws; Fig l 8-is a 'section across the line 18-48 of Fig. 16;Fig. l9-is a section on the line l9l9 ofFig. l6 and; Fig- 20 is avertical e'levation of a tweezer according to the form illustrated in Fig. '35

16 but includingsprings interposed between the, jaws-and wings to provide automaticsidepressure to the jaws'on the extracting-stroke.

The gripping and extracting. deviceor tweezer instrument according to a' specific embodiment of the invention includes a pair of elongated jaws, the lower operating faces at one-end thereof may be'iiattened'and/or corrugated to form gripping faces to effectively hold the hair to be extracted; and the other end. of the jawsare so provided with correlated recesses, projections and shoulders and positioned inside of :a cylindrical guide that an, effective pivotal connection is formed therebetween. symmetrically attached to the sides of the jaws by pivoted links and in slotser sockets in the upper part of the cylindrical guide by elongated recessed and grooved respective spring.

lindrical guideis positioned a helicoidal spring on which is seated a cylindrical plug or retainer which cooperates with the recesses of the lateral disposed flanges for locking them in position and with the jaws to normally hold them spread apart.

In one embodiment, side pressure is normally exerted on the jaws of the tweezer by a pair of laterally extending springs having their inner ends passing through a perforation in the cylindrical guide and bearing against adjacent upper portion of the jaws while the outer portions of the spring are suitably mounted on the inner faces of the wings of the tweezer.

In another embodiment of the invention provision has been made for regulating the pressure with the arms of the tweezer for either adjustably increasing or lessening the tension of a i In carrying the invention into effect the pressure springs interconnecting the arms and jaws of the tweezers, provide a certainforce against the sides of the jaws to effectively hold the hair gripping faces against the hair to be extracted on the extracting stroke of the jaws and the pressure springs may be interconnected between the arms and jaws of the tweezer-as to be subtracting stroke of the'jaws in utilizing an adjustable and rotatable guide sleeve in which the pivotal joint of the jaws are housed, which sleeve upon rotation controls the elevation of an adjustable member connected to one of the jaws to limit their rearward movement and the adjustable member cooperates with suitable spring means whereby varying degrees ofpressure may be transmitted to the jaws for their separation.

Referring now to the drawings, the tweezer instrument as shown in the-several views is provided with a pair of elongated substantially semi cylindrical jaws 10 and 11 having hair gripping and extracting faces 12 and 13 whichqmay be suitably roughened, smoothed orcorrugated and extend beyond thev respective rectilinear inner faces 14 and 15. The other ends of the jaws are retained inside of the cylindrical sleeve or guide 16 and their contracting faces are so constituted as to form a pivotal connection therebetween. In forming this pivotal connection, jaw 10 is provided with a channel 17 to receive the elongated boss or ridge 18 of the jaw 11.

Sides 19 of the channell? project beyond the rectilinear face 14 to form a shoulder 20 which cooperates with the shoulder 21 formed by the depression 22 above face 15. The bottom face 23 of the cylindrical end 24 of jaw 11 serves as a stop for the sloping end 25 of jaw 10.

drical plug 29 and the latter locks the wings 3'3 .in position in the sockets 31 and prevents disengagement of the flanges 32 from the squared portion of the guide or sleeve.

The overhanging lips or edges 36 of the sockets 31 cooperate with the transversely disposed grooves 37 on the upper part of the flanges 32 whereby the upper portion of the arms or wings are retained in the sockets and consequently lateral slippage of the arms 33 is prevented.

The outer faces of the wings33 are desirably embellished or decorated as is also the outside of the guide 16 and the lower portions of the wings are suitably flattened or ridged to form grips in any appropriate manner. i

The inner faces of wings 33 and the outer faces of jaws 10 and 11 are provided with ears 38 and 39 respectively in which (see also Fig. 4) are press fitted the pivotfpins 40, the ends 41' of which are of reduced diameter and receive the sides of the U shaped channellink 42, the channel portion facing downwardly and forwardly.

According to the invention, the upper closed face of the link 42 upon collapsing of the tweezer instrument is stopped by the extension 44 of the projecting ears 38 (see Fig. 2).

In expanded position of the tweezer the terminal 45 of the links 4.2 will be stopped by the ears 39 of the jaws as shown in Fig. 1. In assembling, the sides of the channel link 42' may be pressed into the reduced ends 41 of the pivot pins 40'and if desired the free terminals'of the reduced ends may be upset although in actual practice it has been found that upsetting is not necessary.

With the present arrangement, there is no possibility of injuring the hand orface of the operator due to pinching when using the tweezer. Heretofore. the link members 42 were reversed and had their channels facing upwardly and rearwardly. In Fig. 2, the gap portions shown between the ear 39 andterminal 45, formerly appeared between the ear 38 and the adjacent wardly, the gap which formerly appeared between the ear 38 and the adjacent terminal of the link formed in effect a miniature tweezer which tended at times to catch the flesh of the user. It has been found that by reversing and inverting the channel links to face downwardly and forwardly the miniature tweezer is formed by the terminals 45 and ear 39 where it can. do no harm'or injury.

In assembling the tweezer instrument,- the jaws and arms are first interconnectedby the channel shaped links. 10 and 11 are placed together so that the boss 18 will fit into recess 17 and the shoulders 20 and'21 contact. The cylindrical plug; orretainer 29 is placed within the bore of the guide 16. The helicoidal spring then inserted in the guide. Following this, the upper portions of the Subsequently the jaws.

part of the tubular guide.

jaws 10 and 11 are arranged within the lower With the cylindrical plug 29 against the top inner face of the squared portion and the springs 30 disposed between the plug and the jaw 11 in such fashion as to be under no compression, the upper portions of the arms are below the sockets of the guide.

In order that the upper portions of the arms maybe raised to the elevation of the sockets,

spring 30 must be compressed or made shorter.

- the 'tweezer instrument.

With the rod 45 againstthe cylindricalretainer 29the wings of the tweezer are bodily m'ove'd rearwardly against the energy of spring 30. This causes the retainer to move awayfrom the top inner face of the squared-portion and also aids'to'comp'ress the spring. If the spring be compressed the upper portions of the tweezer arms may be extended to interlock with the guide. Thus the flanges of the jaws may be brought to the elevation of the sockets 3-1 in which they are slipped. The tweezer instrument is then removed from the fixed extension 45 and thus the'spring 30'automatically.expands. Consequently the cylindrical plug passes into the curved recesses 34 of the flanges 32 and locks the' latter against transverse slippage. Down- Ward pressure by the spring on cylindricalpart 24 :of jaw 11 causes the hair gripping and extractingportions Hand 13 of the jaws to be normallyv spread apart.

To dismantle the instrument, if assembled, rod 451s. inserted in the bore of the knob 27 to press down the locking plug below the recesses .34 whereupon the'flanges .32 may be slipped outof the sockets31. Then the wings slwith linked jaws maybe removed from' the guide, as may also be helicoidal spring 30 and the 'iockingplug.

In operation, the wings 22 of the'tweezer may be gripped at 47 between the fingers, preferably the thumb and index finger of thexright'or left' hand'at substantially any angle. Upon compression; that is'upo'n the movement of. the jaws toward each'other, the first step of the movementzof the arms will bring the gripping extracting faces 12 and 1301? the jaws together. This position may; be considered as the initial clampinghor gripping position of the tweezer. In this position the gripping and extracting faces are against a hair to be extracted, To extract a. hair to" whichv the tweezerhas been applied, it isneces'sary that the jaws be ,moved rearwardly: This stroke is caused on the-second step of the-movement of the wings in th'e'directikinttowardsv-each other. However, it is also essentialthat the initial grip on the hair by faces 12 and -13'bemaintaine'd or increased during the extracting stroke or" the jaws. For this purpose and to insure that the faces 12 and 13 hold the hair without slippage, supplementary pressure is provided on the sides of the tweezer jaws; Inthe preferred form of the invention, the 'side pressure 'is supplied by'interconnecting the wings and the upper portion of the jaws with suitable helicoidal springs 50. For example,

:in'the'form shown'in Figs. 1 and 2, springs 50 are substantially horizontal that is approximately atnine'tydegrees with respect to the axis of the tubular guide. In the form according to -Fig.=9, pressure springs i) connected to the jaws andxarms OfltlIGtWEGZEI .are approximately at spring 30'.

an angle of forty five degrees with the tweezer expanded. In the case of the form illustrated Figs. 1 and 2 the outer ends of the springs-50 are removably mounted on a stud '51 on the inside of the arms or wings and the inner ends are disconnectably mounted on the shank 52 underneath the head of a button 53 which bears against the sides of the jaws and is removably part of the tubular'guide. I

With regard to the springs 50 shown' in Fig. 9 their outer ends areremovably mounted on posts 51 carried by the arms and their inner ends are appropriately, in similar fashion, disconnectab'ly disposed within an opening as 54 at the lower arranged on studs or posts 55 c'arriedby-the jaws.

With the tweeze'r jaws brought merelyto gether such that the gripping and extracting 'faces 12 and 13 initially clamp a hair to be extracted, no effective side pressure is created by the laterally disposed springs 50; Upon further manipulation of the-wings efifectiveside pressure is brought about due to the compression of the springs 50 as the rearward stroke of the jaws commences and progressively increases until the rearward strokeconcludes. It is thus apparent that the grip on the hair by the faces 12 and 13 is intensified due to the gradual inereas'e'" of compression of the lateral springs 50 during the extracting stroke of the jaws. Hence the grip on a hair by the jaws will be sustained and "consequently preclude slippage of the jaws overthe hair. With the hair firmly clamped on the rearward stroke, thehair pulls away from the flesh and at the completion of this stroke and the 'tweezer takes the form shown in Fig. 2, namely collapsed. i If the side pressure applied by the operator be now removed from the actuating surfaces 4'7, the jaws move forwardly by reason of theactien of spring 30 and consequently separate withfthe result that the hair forn'i'erlywithdrawnfrom the flesh'is discarded. Onthereturn of the jaws to normal the latera1'springs'5i) expand as is the case also of the more powerful helicoidal It has been discovered 3 that with the lateral springs "disposed between the jaws and wings, the tweezer'operates in a relatively silent'iash ion doing practically away withthe objection able 'clicking between the links, the extensions 44, and -.ears 39. The clicking -ac'tionformerly developed with tweezers of the character referred to which did not utilize side springs is now substantially absorbed or cushioned by the compensating springs 50.

In the form of the invention accordingito Fig. 8, provision has been made for adjusting or regulating the tension of the side springs '50. To this end, stud 51 is threaded. and cooperates with a knurled threaded disc wheel and the latter may be shifted along'the stud to "regulate the spring to the desired pressure;

According to the farm illustrated in Fig. 10, the pressure is applied to the jaws by the aidof an inverted U shaped flat spring 61 disposed in a correspondingly shaped groove formedat the upper part of the jaws, thespring 61 having perforated terminals threadably engaging a shank of a set screw 62. Pressure ofthe sides of the jaws may be-reglil2ttdb adjusting set screws 62.

If desired, the gripping and extracting faces Cir of the jaws. More specifically however extending from each disc is a shank '71 which is freely ping and extracting jaw after a full cycle of the tweezer has been completed, namely after a rearward extracting stroke, the disc to which the hair is sustained may be rotated and this action separates and discards the hair therefrom. Y

In the case of the preferred embodiments illustrated in Figs. 16 to 20 inclusive, the cylindrical sleeve or guide and the squared head or member 81 are made invtwo separate parts. Head 81 includes a longitudinal'channel or bore 82 which receives the helicoidal spring 83, the terminals of which overhang opposite sides of the head and normally abut the upper portions of the arms or wings 33 of the tweezer, which arms are appropriately pivotally connected to the upper portion of the head by suitable pivots 84. Head 81 is provided with an integral and spheroidal shaped terminal 85. From the lower horizontal face 86 of the head integrally depends the axially arranged cylindrical post 8'7 having a bottom flat face 88. The lower face 86 of the head 81 is also provided with opposed detents or small projections 89 for a purpose hereinafter described. The cylindrical, sleeve or guide 80 in which the pivotal connection formed at the upper end of the jaws l0 and 11 is housed comprises a shell or casing having a top wall 90 including a concentric opening 91in which the depending post 8'? of the head81 is removably received. The inner face of the sleeve is provided with the opposed and alined guide slots 92 and 93 extending substantially the entire heightv thereof, which-slots guide the reduced terminals ofa pin 94 loosely carried by and at the. lower part of the head 95 of an adjustable stud generally designated96, the threaded shank 97 of which is threadably interconnected in. the threaded bore 98 of the boss or lug 18 at the upper part of jawll, the boss being disposed in a suitable elongated recess 17, which in association with cooperating shoulders as'20 and 21 of the type described in connection with Figs. 5 provide the pivotal joint between the jaws 10 and 11. I

A helicoidal vertically disposed spring 99 has its lower end seated on the overhangingportions of the pin 94 and surrounds'a major portion of the head of the stud 96., The upper end of spring 99 surrounds the depending post or extension 8'7 and abuts the inside face of the top wall 90 of the sleeve. Hence, spring 90 has a double function, to wit, first in urging the top wall of the guide sleeve against the lower face of the head 81 and secondly in imparting a downward force against the lateral flange 100 overhanging the upper part of the jaw 11 for normally separating the lower gripping faces of the jaws.

Since the spring supporting pin 94 is non rotatably guided in the vertical sleeve 80, rotation of the sleeve will accordingly bodily carry the pin 94 with it. Consequently, if the sleeve be rotated relative to the post 87 and the pivotally connected jaws, the threaded shank will be rotated and thus, either increase or decrease the distance between head of adjustable stud 96 and the bottom part of the post 87,depending upon the direction of rotation of the sleeve.

As illustrated in Fig. 16, the shank 98 occu pies substantially the entire length of the internally threaded bore 89 of boss '18 and the pin 100 which acts as a stop and limits-the downward movement of the head 95. In such, position of shank 9B, the vertical spring 99,1 'as1con- Y :15

fined within the sleeve is under leastjcompression. Hence less downward pressure is transmitted for the separation of the jaws- Itfollows therefore that less pressure need be 'applied to the jaws for their separation. Correspondingly less pressure is necessary .On the part of the operator in the manipulating 1 of the wings for retraction of the jaws. In the position of the shank 98 as illustrated in Fig. 16, the distance between the head 96 thereof and the post 8'? is the equivalent to their largest distance of separation, or equivalent to the longest rearward stroke of the jaws under the least opposing spring pressure by the helicoidal spring According to the forms of the invention shown in Figs. 16 and 20, links 101 have their ends pivotally connected to the inside of the bottom parts of wings 33 and to suitable lugs 102 carried by the jaws. If therefore the wings be brought in a direction towards each other,-the links operate to simultaneously retract both of the jaws. On the completion of the rearward stroke, spring 99 automatically operates when finger pressure is removed from the wings to move the jaws forwardly and apart.

The wings are also normally urged outwardly by reason of spring 83 which became contracted on the movement of the wings towards each other and automatically expands upon release of finger pressure from the wings. I

With the sleeve and studadjusted'for the longest, rearward stroke of the tweezer, as in Fig. 16, hairs offering little resistance to extracthreaded shank 9'7 with respect to its boss'such that the distance between the head of fstud 96 and post 87 is decreased and thus compressing the helicoidal spring 99. Consequently, added finger pressure on the wings is necessary on the part of the operator to overcome the increased spring pressure on the jaws. This'extra pressure applied to the wings overcomes the added resistance to extraction offered by the hairs and also prevents slippage of the hair between the clamping and extracting faces of the jaws during the latters retraction. In a similar fashion the sleeve and jaws may be adjusted and'set for hairs offering various degrees of resistance for their extraction.

As illustrated in Fig.17, the sleeve has. been rotated as to arrange a major portion of the 1 0 v 94 is disposed adjacent the overhangingflange' threaded shank 97 above the overhangingv flange pressed. Therefore there. isv no gap between the head and the. projection 87. .It follows that although the wings 33 may bemanipulated as to.

bring. the lower portions of the jaws. towards each other to gripa hair. nevertheless it will be impossible to'slidably shift the jaws rearwardly relative to the guide sleeve. In .this case, to extract .a hair it is necessary tohold the jaws together, by finger pressure on the wingsxand manually move the entire construction of the tweezer bodily rearwardly .in a. direction away from the. hair. In this operation, the tweezer,

if adjusted for no rearward stroke of'the jaws,-

isv similar in operation to the simple plain tweezer of the type well known in the art, which consists merely of two. hinged jaws adapted-to extracta hair provided itis bodily. moved away from the hair. I

-;When the wings of the. tweezer according to the forms shown in Figs. 16.and.20 inclusive are rapidly manipulated after the stroke.. andpres-f sure. on, the .jaws thereof have ,been adjusted,- .as desired, it has been foundthat this adjustment becomes disturbed unless appropriate means is provided to, prevent partial and accumulative: rotation of. the ,guide sleeve which otherwise would take;place. =-..'Io ,overcome this ;difiicu-lty,;

namely to prevent partial. rotation ortcreepage of the sleeve during the manipulation of the wings, t e top wall-.90 of .thesleeveis provided In this case of the embodiment illustrated in,

Fig. 20,;the latter inconstruction; is similar to the-tweezer in accordancexwith Figs. 16 to 19 inclusive except that the wings and jaws thereof are interconnected by suitable oblique springs as 106 to provide automatic gradually increasing side pressure tothe jaws .astheir extracting stroke progresses rearwardly.

- In the broader aspects of my, invention, I do not desire to, be understood; as limiting its. embodiments to details hereinshown illustratively asawide variety of modifications .may be made within the scope of the appendedclaims without departing from the spirit of the invention.

- I- claim:

1. In atweezer, the combination of, a pair of'hair gripping and extracting jaws, a. pair of pivotalwings; links pivotally connected to the jaws and wings, a rotatable guide for slidably housing the upper portion of said jaws, means within the guide for holding the gripping and extracting faces of said jaws apart, and laterally extending springmeans interconnecting the jaws;and wings to provide side pressure tosaid faces during retraction, thereof..

' 2. In a tweezer, the combination of, a guide, a pair of .hair gripping and extracting jaws having their upper portions slidably disposed in said guide, a member disconnectably seated on said. guide, a a pair of wings .pivoted to said member, links pivotallyconnect'ed tothe jaws and wings, ,means imovable with .said jaws and cooperating with said guidefor limiting rearward movement of the jaws, means for normally hold-. ing said. jaws apart, and means carried by said member for urging said wings laterally.

. 3. In a tweezer, the combination of, a rotatable guide, a pair of hair gripping, and extracting jaws having theirupper portions slidably disposed in said guide, a member disconnectably seatedon said guide, a pair of wingspivoted to said member, links pivotally connected to the jaws and wings, means controlled by said guide and adjustable relative to saidv jaws for regulating rearwardmovement thereof, spring means for holding said jaws apart and the guide against said member and means for normally urging saidwings laterally.

4. In a tweezer, the combination of, a rotatable. guide, a pair of hair gripping and extracting jaws having their upper'portions pivotally and slidably, disposed in said guide, a pair of pivotal.

wings, links pivotally connected to the wings and jaws, spring means within said; guide :and

means-adjustable with respect to said jawsand controll'ed'by said guide for regulating the pressureon saidspring means.

5. In a tweezer, the combination of, a rotatable;

guide, a .pair of hair gripping and extracting jaws having their upper portions pivotally con-' nected. and slidably arranged in said guide, a.

pair of pivotal wings, links pivoted to the wings. and jaws, :me'ans cooperating with said guide for,

adjusting the rearward stroke ofsaid jaws, and means to, prevent the disturbance of said adjustment upon the manipulation of said wings.

6. In a tweezer, the combination of, a rotata-.

means carried by said member for urging said wings laterally, links pivoted to said jaws and wings, an adjustable stud. mounted on one. of

said jaws and bodily movable with said sleeve,

and. means acting on said. stud to force the gripping faces of .said jaws apart and the sleeve against said member. I

"7. In a tweezer, the combination of, a rotataotally connected and slidably arranged in said sleeve, a member disconnectably seated on said.

guide'sleeve and having an extension'projecting therein, wings pivoted to said member, links piV-j. oted to the jaws and wings, spring means for normally urging the wingslaterally, an'adjustable stud mounted on one of said jaws and:

bodily movable with said sleeve, spring meansv acting on said stud to force the lower parts of the jaws apart and the sleeve against said memotally and disconnectably associatedand slidably.

arranged in said sleeve and spaced from the top wall thereof, a member disconnectably seated on said guide sleeve and having a post extending into an opening of said wall, means pivotally associated with said memberand jaws for reciprocating said jaws, spring means normally resisting reciprocation of said jaws and abutting said wall and encircling said post and adjustable means connected to one of said jaws andto said sleeve to control the rearward stroke of said jaws relative to said post. a

- 9. In a tweezer, the combination of, a guide including opposed sockets, a pair of jaws having the upper portions slidably disposed within said guide, a pair of wings having pivotal-connections with said sockets, means within the guide tolock said connections in position and to maintain-the gripping and extracting portions of the jaws normally separated, and means interconnecting thejaws and wings for effectively holding the jaws'together during the extracting stroke thereof.

10. The device a 51mm 9 in which the guide takes the form of a hollow cylinderwith an external squared end in which endsaid socketsare provided on opposite sidesithereof, the squared end beingof such size and shape and the sockets being ofsuch depth that their central por-"' tions open within the inside of the cylinder, the lock means comprising a cylindrical slide -linsaid guide, and the pivotal connections include knob shaped projections adapted to be' re'ceived in said sockets for interlocking with said slide;

11. In a tweezer, the combination of, a pair of side wings, a pair of jaws, a 'tube within which.

the upper ends of said jaws slidably extend having transverse sockets adjacent one end thereof;

a plug Within thetube, said wings having, inwardly extending flanges adapted to fit within said sockets, the flanges having portions adapted to straddlesaid plug and a terminal of said tube,

having an opening to. permit theinsertionof a tool to disconnect the plug from the flanges and spring means to create side pressure on said jaws on the rearward stroke of the latter, and means'within the'tube to hold plug interlocked with said flanges and the gripping and extract plug, links pivotally connecting the. jaws and wings and spring means acting against the jaws to apply side pressure thereto. 3

13. In a tweezer, the combination of, a pair of jaws, a casingwithin which the inner ends of said jaws slidably extend having opposed sockets adjacent one end thereof, a pair of wings pivoted to said casing a plug within the casing, said wings having flanges to fit withinjsaid sockets, the flanges including means for removably interlocking with said plug, a spring withinthe casing acting against the jaws and plug, links pivotally connecting the jaws and wings and spring means interconnecting the jaws and wings for applying a progressively increasing side pressure to saidjaws upon their retraction.

14. In a tweezer, the combination of, a guide,

7 a pair of jaws having portions slidablydisposed in said guide and other portions projecting therefrom, means for reciprocating said jaws,

adjustable means movablewith said jaws and controlled by said guide for regulating the rearward stroke of said jaws, and spring means adapted to be compressed or expanded relative to a wall of said guide by said adjustable means. 15. In a tweezer, the combination of, a rotata' ble guidefapa'ir of jaws having a pivotal 0011-.

necti'on and slidably disposed in said guide and hair extracting portions extending therefrom,

. meansfonreciprocatingsaid jaws, adjustable means movable with said jaws and controlled and guarded by said guide for regulating therearward st roke of said jaws, and spring means normally exerting a force to separate said extracting portions and adapted to be compressed orexpanded'relative to a' wall'of said guide by said adjustable means." i a 16. In a'tweezer, the combination of, a pair of hair gripping and extracting jawsja'rotata ble guide for slidably housing the upper p'ortions of said jaws, means for reciprocating saidjaws; spring means within said guide normally exerting a force to separatethe gripping and extracting portions of said jaws and' means actuated by said guide 'and cooperating with said spring. means tolpermit or prevent retraction:ofisaid jawsr .1

i 1 P 17. Inatweezer, thecombination of,a rotatableiguide, a pair-of hair gripping and extracting jaws movably disposed in said guide, spring means within said guide .to norm'ally separate thegripping and extracting 1 portions or -saidjaws, actuating means to reciprocate: said jaws, means 7 movablecwith said" guide and adjustable relative to said jaws for adjusting therearward stroke" of said jaws and means to prevent the disturbance of said adjustment upon manipulation of said actuating means. i

- :18. In a tweezer, thecombination of, a rotatable guide sleeve,.a pair of gripping and extracting jawsjhavingqtheir upper portions -pivotally and disconnectably associated and slidablyarranged in said sleeve and spaced from the top wall thereof,a' member disconnectably -seated on said guide sleeve and havinga post extending into an opening of said wall-j" means connected tosaid member and jaws to reciprocate the latter, adjustable means slidably guidedwby and movablewith said sleeve and having" a portion threadably associated with one of said jaws and springmeans mounted on said adjustable-means normally resisting.re'ciprocation'of said jaws; andabutting said wall and encircling'saidpost',

said spring means normally exerting 'a force to hold said' guide :against said 'm'ember and adapted to be'compressed' or rotation of said guide. a

'19. The .tweezer "according acterized in that said member and"'guide"com-' expanded upon the prise locking means to prevent disturbance of'a" set position'of said adjustable means during reciprocation of said jaws,

to claim 25' char" 20. In a tweez'er, the combination of]; hollow rotatable guide, a pair of jaws having portions slidably disposediinsaid guide and gripping and extracting portions extendingtherefrom, means for reciprocating said jaws,i' adjustable 'controlled means mounted" on one of said jaws adapted upon the selective rotation of said guide to increase? or decrease' thei distance between a terminal thereof anda wallof said guide, and a spring interposed between said walland terminal adapted to be'c'ompressed or expanded upon the rotation of said guide. '6 1 21. 'In a tweezer,.the combinationof, a hollow sleeve, :a pair of jaws. having portions slidably disposed in said sleeve and gripping and extracting portions extending therefrom, means,

for reciprocating said. jaws, adjustablemeans having a portion thereof slidably guided by said sleeveand another part :threadably connected to one of said jaws and spring means mounted on said portion and abutting a wall of said sleeve, said spring being adapted to be compressed or expanded upon selective rotation of said sleeve to change the force applied to said jaws in accordance with a settable position of said adjustable means.

22. In a tweezer, the combination of, a memher, a pair of wings pivotally carried by said member, a hollow guide sleeve rotatably associated with and removably connected to said 'member, a pair of jaws having portions slidably arranged in said guide sleeve and gripping and extracting portions extending therefrom, links pivotally connected to said jaws and wings, ad-

justable means having a terminal portion thereof slidably guided by said sleeve and another part threadably connected to one of said jaws, spring means mounted on said terminal portion and abutting a wall of said sleeve to removably retain the latter against said member, said spring means being adapted to be comstroke.

pressed or expanded upon selective rotation of said sleeve to change the force applied to said jaws in accordance with a settable position of said adjustable means, and other spring means carried by said member and abutting said wings for normally urging the latter outwardly.

23. The tweezer according to claim 29 in which said member includes detent means cooperating with indent means of said wall to prevent displacement of said adjustable means after a set position thereof during the reciprocation of said jaws upon the manipulation of said wings.

24. In a tweezer, a guide, a pair of jaws slidable relative to said guide, means for reciprocating said jaws, means controlled by said guide to vary the rearward stroke of said jaws or to prevent retraction thereof, and locking means effective upon the reciprocation to said jaws to prevent changing of said rearward 20 SAMUEL SEGAL.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2584547 *Feb 12, 1948Feb 5, 1952Benjamin CahnHair tweezers with automatic traction
US5454819 *Mar 17, 1994Oct 3, 1995Nusurg Medical, Inc.Spring biased laparoscopic surgical needle holder
EP0744918A1 *Feb 9, 1995Dec 4, 1996Heartport, Inc.Endoscopic microsurgical instruments and methods
Classifications
U.S. Classification606/210
International ClassificationA61B17/30
Cooperative ClassificationA61B17/30
European ClassificationA61B17/30