US2594789A - Scoop removal pliers - Google Patents

Description

Patented Apr. 29, 1952 UNITED STATES PATENT OFFICE.

SCOOP REMOVAL PLIER'S Louis. IL Morin, BroninrN. Y.'

Application May}, 1945, SerialNo. 591,512 1 This invention relates topliers designed'for'the removal of scoops from the stringers of'separable fasteners. More particularlythe invention deals with a hand'operated tool of the type defined wherein individual scoops maybe engaged and simultaneously severed from the stringer tape and'moved into -position spaced from the beaded edge of'thetape for displacement from the tool preparatory to a second removal operation. The novel features of theinventionwill be best une derstood from the following description when taken'togetherwith the accompanying drawing, in'which certain embodiments of the invention are disclosed, and in which the separate parts are designated by suitable reference characters in each'of'the views; and in which:

Fig. l is a side ,view'of a pair of pliers made according tomy invention, indicating the first position in the use thereof for removing a scoop.

Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. 3.is a longitudinal sectional view through the 'pliers'showing the jaw members thereof in ,a different position from that shown in Fig. 1; and

Figs. 4 and are other detailed views of the jaw end of 'the'plier showin the next successive .operations thereof in the stripping'or severing and removal of a scoop.

In the drawing, H3 represents a main body portion'of a pair of pliers having a handle member, II and a jaw stop or body l2 from whichextend two outwardly and upwardly directed wall portions [3 and M. Thewall portions l3 and [4 form what maybe termed a U-shaped, end. on the .body' l0, and on the stopv i2, isan upwardly extending rear wall portion 55, noteFig. 3..

Secured between the upper-outer cornerportlons of the walls l3 and i4 is a stationary jaw i5 being held in'place by two rivets, screwsor other fastenings H, the jaw having an outer inwardly curved hook-shaped end, 18 terminating ,in a prong-like member l9. Pivotally supported between the walls 13 and It, as seen at 26, is a movabl jaw 2|. The jaw 2! has an outer end which is substantially similar to the jaw It. In other words, ishook-shaped in form, as seen at 22, and terminate's'in a prong as at 23. The jawv 2l has an inwardly extending arm 2d having at its inner end a raised portion 25.

Slidably mounted within the walls l2 and I3. andbetweenadjacent surfaces of the jaws .l 6 and 2|, is a plunger 26, in the lower surface 21 of which is a recess 28 adapted to receive the pro jection 25, to allow the jaw member 2i to drop by gravity into the position shown in Fig. 1 of the drawing. The jaw member is moved into the gripper position shown drawing by engagement'of the projection 25-?with thesurface 27 of the plunger. of the plunger 28 is fashioned-to form aashort rack 29 adapted to be=engaged by a gear seg-.

ment'3il at the inner end 3| of a handle member, 32, pivoted within and between the'wallsl3iand M, as seen at 33. The handle member 32-l-has an offset portion 34 therein to clear the free-end of the reducedportion 35 of the plunger:26, as well as a sleeve 35enveloping a' coil spring-37' arranged on the-end 35'. A washer-38 isheld seated upon the spring 3! by a nut 39. The other or forward end of theplunger 26 has a substantially V-shaped socket portion. 40, the walls of which terminat in inwardly extend-.: ing retaining lugs 4i.

It will be understood that the hock-shaped ends I8 and 22 of the jaws i6 and 2 are-reduced in thickness in comparison with the remainder of the jaw members, asindicated by the bevelled wall portions 42 and 43, in order to adapt .the prongs Is and 3 to the width of the scoops employed, it being understood in this connection that a few diife'rent sized tools will be used for scoops of widely varying widths; particularly when it is desirable to remove asingle scoop are ranged between two adjacent scoops. However,- when scoops are disposed at the ends of stringers, the relative Width of the jaws and scoops isimmaterial, providing the jaws are reasonably wide to engage at least the greater width of the scoops employed.

In Figs. 1,3, 4 and 5,1Ihave shown at 44a stringer tape upon :the beaded edge 45 of which is arranged a scooped. The scooplifiincludes side wall portions 4? audit arranged upon op? posite sides of the tape and the head 45 thereof.

In. use, the. tool is applied to the fastener stringer as shown in:Fig.:1;. that is, with theprong l9. resting. on the tape and abuttin the. rear;.:of

the .scoop 46 to be removed. In this, position of the tool; the jaw Zi'is open. Thehandle ll; 32 are then squeezed togetheras; in using-an ordl nary'pair; of. pliers, inwhich operation the-rotation of the gear segment 30' advances the plunger 25 relatively to the jaws IG'and'ZI- and into the successive positions illustrated-in Figs 3' and 4. The sequence is such that the plunger first cams the lower jaw 2| into position-to engage the tape and scoop, and then the base of the socket 40 strikes the free end of the scoop. As the plunger movement is completed, the scoop is driven bodily onto the inclined diverging surfaces 49 and 50 of the prongs I9 and 23, thereby in Figs. 3, 4 and 5 of the.

The upper surface 3 spreading the tape-engaging portions of the scoop in a manner similar to that shown in Fig. 4, in other words, in cutting or stripping the side portions 41 and 48 from the sides of the tape. It will be observed that in this process the side portions or walls 41 and 48 of the scoop are spread apart to such an extent as to engage them beneath the lugs M which overhang the mouth of the socket 40. In the result, when pressure on the handle member 32 is released, the spring 3'1 will withdraw the plunger from the jaws, carrying with it the scoop 46, as illustrated in Fig. 5. The removed scoop may now drop through the openings between the jaws or be manually forced therefrom. Upon completion of the above operation, the jaw 2| will drop into the position shown in Fig. l, or may be moved into this position by hand. It will be understood that the wall l5 checks the movement of the plunger in one direction, as will appear from a consideration of Fig. 1. of the drawing.

The plunger 26 may be descriptively referred to as a movable anvil engaging the scoop end in forcing the scoop in the direction of the stripper tools, comprising the pronged ends l9 and 23, and the lugs 4| may also be said to comprise hook portions for engaging a stripped scoop in moving the stripped scoop away from the tape edge.

It will be understood that the gripping engagement of the jaw members or the curved ends l8 and 22 thereof with the tape is more or less of a supporting engagement simply to maintain the tape in position between the jaws and permit the movement of the prongs l9 and 22 from the position shown in Fig. 3 to that shown in Fig. 4, while at the same time, supporting the tape when the scoop is withdrawn, as illustrated in Fig. 5,

in which operation the tape might slip to a slight extent between the jaws.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A tool for stripping scoops from a separable fastener stringer tape comprising a member having a handle and a fixed jaw, a second jaw movably supported in said member, a plunger mounted in said member and arranged between said jaws, said plunger having a scoop engaging end which comprises a socket that is larger than said scoop, a spring normally supporting the plunger in spaced relation to said jaws, interengaging means on the movable jaw and on the plunger for .;maintaining said jaws open when the plunger is in said normal spaced relation to the jaws, means comprising a supplemental handle pivotally supported in said member and operatively engaging the plunger for manually moving the latter in the direction of said jaws and against the action of said spring, means on the plunger for moving the movable jaw to a closed position with respect to the fixed jaw when the plunger is moved against the action of said spring, and means on said jaws for expanding the scoop into said socket as the plunger moves the scoop toward said jaws, said spring being adapted to retract the plunger and engaged scoop upon release of said supplemental handle.

2. A tool for stripping scoops from separable fastener stringers, said tool comprising a body 4 portion having relatively movable jaws for engaging opposed surfaces of a stringer tape adjacent a scoop thereon, said jaws having reversely curved pronged ends terminating in diverging surfaces for spreading side portions of the scoop when the latter is forced against said pronged ends, a plunger arranged in said body portion between and movable toward and from said jaws, said plunger having a scoop engaging anvil adapted to force the scoop against said pronged ends during movement of the plunger toward said jaws, means on the plunger for closing said jaws during said last named movement thereof, means for moving the plunger in the direction of said jaws, said anvil having hook portions for engaging the spread side portions of the scoop, means for moving the plunger and the engaged scoop away from said jaws so as to move the scoop out of contact with the tape, and a stationary wall portion on said tool for limiting said last named movement of the plunger.

3. A hand tool for removing scoops from a separable fastener stringer tape, said tool comprising a member having a handle and a fixed jaw, a second jaw movably supported in said member and adapted to clamp said tape against said fixed jaw adjacent a scoop, a plunger mounted in said member and movable toward and from said jaws, said plunger having a scoop engaging socket for pressing a scoop against the clamped jaws during movement of the plunger toward said jaws, means on said jaws cooperative with said socket for coincidently splitting said scoop and transferring the scoop from the tape to the socket, means on the socket for retaining the scoop therein during movement of the plunger away from the jaws, and interengaging means on the plunger and said second jaw for clamping and unclamping the jaws during said movement of the plunger toward and from the jaws respectively.

4. A tool for removing scoops from separable fastener stringer tapes comprising a member having a handle and a pair of reversely curved jaws terminating in prongs having inclined diverging surfaces, said jaws being adapted to grasp a stringer tape adjacent a scoop thereon, a plunger mounted in said member and movable toward and from said jaws, said plunger having a scoop engaging socket adjacent said jaws adapted to force said scoop onto said prongs to split the scoop, spring tension means adjacent the other end of said plunger for normally supporting the plunger in spaced relation to said jaws, means comprising a supplemental handle pivotally supported in said member and operatively engaginging the plunger for moving the plunger in the direction of said jaws and against the action of said spring, and said socket having hook portions for gripping and removing said scoop from said prongs and said tape during movement of the plunger away from the jaws,

LOUIS H. MORIN.

REFERENCES CITED UNITED STATES PATENTS Name Date Johannesmeyer Nov. 24, 1942 Number

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