US1560606A - Gripper - Google Patents

Description

. C. F. PYM

GRIPPER Original Filed Aug. 15, 1917 Patented Nov. 1 0, 1 925.

I NITE 5 onannns rain, or ynn 1y:As' s-i mi11%i':iuur'rs, A-sSIGiTdR To UNITED SHOE M lton I'm sarcomas-Arman, or'fir rn'RsoN', NEW JERSEY, .t eoaronamo-fi or NEW JERSEY;

" serum.

original applicamn i1 i 5;;191 7, seam. sgim. Divided ai dthis-ap ndatimi filed m hs,

' 1922. Serial No. 577,377.

Be it known that 15 QHaRLEs F. Pym, a subject of-the King of vlflngland residing at L nn, in the county of Essex, and state of l assachusetts, have invented certain In provements in Grippers, of which the following description, in connection with .the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts inthe several figures.-

This invention relates to grippers for use in machines folpulling uppers, over lasts, the present application beinga divisionof 1ny -earlier application Serial No; ;1 ;86,'3 l:4

filed on Augustl 5, 1917, upon which Letters Patent No, 1,436,194 were fgrantedonzNov 21, 1922.

I An objectof the invention is provide i an improved gripper adapted for use to pull-the toes ot1uppers; Ee atuj:es of the invention are to be'recogni-zed in a novel construction affording provision for relative {adjustment-of different pairsof gripper jaws to conform tot-different sha-peszot toes, a novel arrangement affording, an' equalizing connection between different pairs of igripper jaws which are relatively v Inovable to conform to different shapes; whereby the different pairs of jaws in any positionwhich they assume are closed with substantially equal pressures and a novel gcoinbination oi gripper tripping means. with pairs oiivjaws that are relatively movableYas above set forth v i I The above and other features of their]!- lvention including certain etai s of con vstruction and vcombinations of parts; will 'nowbe more particularly describednbyrefierenceto the accompanyingdrawings and pointed. out iii-the claims.

, the drawings, I

Fig; 11s aivlew in side elevation of the novel toe gripjper. and associated parts {of themachine shown inmy prior application, and-pr i Fig.2 ,is a perspective. view of thegripper with portions: of the structure'broken .awayvto show parts that liebeneath. V

' -gripperherein: -shown, in. common withlgrippers in useheretoforefin machines of the well known typejillu'strated in my prior-application, comprises a ibar 2.;co1inected at its upper end .to an updraw lever i which is operated androntrolled in the extension 20,

insu-ch mana es ant nna usual "manner, the bar 2 at its lower end belngsl dably movable 111 a. gripper casin 6 which has-on its opposite sides lugs 8 -or engagement with the frame-ofthe machine a to llmit downward movement of the casing in the return of the parts to startingposivtion after the upper has been pulled. It

will he understood that (when the lugs "8 engage the frame the ,bar 2 continues its downward noyement againsdthe resistance. of a spring 10 which ispositionedein a re- ,cess in the bar and acts opposite. y against the bar and a hloek 12 secured the easing. ThebarfQ is provic edingitgsjlower i I end with a slot to emb race t,e block and permitthe bar .tolextend ownwar below the block.

The.g,r1pper is provided withtwo; airs of jaws, each :comprisinga fixed jawi fand a pivoted jaw 16, and each pair Of jiLWSlS mounted :on a holder 18 which has aleylindrical extension 2 (linounted to turnwin the casing 'ti to adjust the jaws to different shapes iof toes. :In the construction shown l each holder '18 maybe adjustedflindependently of the other and :i ssecured in justed position bya, set screw '22which i s threaded: in the casing'efi and en ages, the

Each or the with a" curved. shank portion engaged'by .a roll Q loii a jaw closingmeniberQG, theilatter comprising a stem having a bearing pivoted jaws .16 is w the extension 20' and movable lengthwiseiof said extension Each of thecylindiicailextensions 20 is provided with a peripheral slot to expose portion of the closing meniher 26, and in Ltheflocat ion ofzsa'idslot each closing mem er is provide a eralgroove-281to l-f eciveail endpfaiigqiializ'er tar 30 thr ugh which the merits Theequa 1izerj30 lis pivotedlat -e pemea; 0 .close ma am aria to an the upper. 1

. casing; 6, ,and by" reason o'ffli'ts l freedom lltlo lindrical 5 extens ons 2( are it o ,suflielent dimensions to permit theequa z-erto maintll-n itS O'P6I2ItlVG connection w ththe difv e 3 gripped by h fie ntp s or we It a will be understood that .the slots 411 v a} ferent closing members in all positions of adjustment of the different pairs of jaws and also to permit movements of the equalizerand the closing members lengthwise of the; extensions as far as may be required for a the jaws firmly upon the upper, and that by further movement of the bar the casing 6 is lifted with the jaws to pull the upper.

At a predetermined time'in the cycle of the machine, after the pulling of the upper,

the gripper is tripped to cause it to release the upper by disconnecting the latch 36 from the block '34. Different meansmay be employed'within the scope of the present inventic-n for'thus operating the latch to break the connection between the gripper bar and the jaws, the construction shown comprising mechanism described in detail in my prior application. Generally speaking, this mechanism comprises a member 40'which is pivoted on the block 34 and is arranged to force the latch 36 rearwardly to trip or release the block, the member 40 being connected by a link 42 to an, arm 44 which is pivoted on the bar 2 and is engaged by amember 46 on the wiper carrying arm 48 of the machine. It will be understood that the downward movement of the bar 2 relatively to the casing 6 in the return of the parts to starting position serves to carry the latch 36 into position to connect the bar again to the block 34 ready for the operation of the grip-per upon the next shoe.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

i 1. A toe gripper having, in combination, a

plurality of pairs of'gripper jaws mounted for relative movements to conform to different shapes of toes, and means for closing the upper.

said jaws upon an upper in any position of the jaws comprising a member arranged 'to be tripped afterthe-upper has been pulled to cause the different pairs of j awsto release 32'. A toe gripper having, in combination,

a plurality of pairs of gripper jaws mounted for relative turning movements to conform to different shapes of toes, a member having operative connection with the different pairs of jaws in all positions which they assume in conformity'to different shapes, and means for imparting jaw closing and pulling movement-to said member comprising a latch movable after the upper has been pulled to release said member and permit the opening of thejaws.

3. A toe gripper having, in combination, a gripper casing, a plurality of pairs of gripper jaws carried by said casing and relatively movable to conform to diflerent shapes of toes, a gripper bar, and means comp-rising a latch for connecting said gripper bar to the jaws in any position of the jaws to close them and to operate themtopull an upper, said latch being movable after the upper has been pulled todisconnect the bar from the jaws to cause the jaws to release the upper.

4. A toe gripper having, in combination, a gripper casing, a plurality of pairs of gripper jaws carried by said casing and mounted for relative turning movements to conform to different shapes of toes, a closing member for each pair of jaws, an intermediatemember connected to the difi'erent closing members in all positions which the different pairs of jaws assume in conformity to different shapes oftoes, a gripper'bana pairs of jaws being mounted for turning movement in said casing to adjust the gripper to different shapes of toes, and means for securing the different pairs of jaws in adjusted position.

6. A toe gripper having, in combination,

a gripper casing, a plurality of pairs of gripper jaws carried by saidcasing, a holder for each pair of jaws having a cylindrical portion extending within said casing to permit turning of the holder to adjust the jaws for different shapes of toes, and means for securing each holder in adjusted position in the casing. v

7. A toe gripper having, in combination, a gripper casing, a plurality of pairs of gr pper jaws carried by said casing, each of said pairs of jaws being adjustableindependently of the other pairto'conform to different shapes of'toes, meansfor securing the jaws in adjusted position, and jaw closing mechanism arranged to maintain an operative connection with the different pairs of jaws in all positions of their adjustment. 8. A toe gripper having, in combination, a gripper casing, a plurality of pairs of gripper jaws carried by said casing, a holder for each pair of jaws havinga cylindrical extension mounted in said casing for turning movement to adjust the jaws for different shapes of toes, means for securing said holders in adjusted position, a closing member for each pair of jaws movable lengthwise of said cylindrical extension and having a peripheral groove therein, an intermediate member extending into the grooves in said closing members to maintain an operative connection with said members in all positions of adjustment of the jaws, and means for imparting jaw closing and pulling movement to said intermediate member comprising a latch movable after the upper has been pulled to release said member and permitthe opening of the jaws.

9. A toe gripper having, in combination, a plurality of pairs of gripper jaws mounted for relative movements to conform to different shapes of toes, and means for closing said jaws on an upper comprising an equalizing connection between the different pairs of jaws for substantially equalizing the pressures under which the upper is gripped by the difierent pairs in any position of the jaws.

10. A toe gripper having, in combination, a plurality of pairs of gripper jaws mounted for relative turning movements to conform to different shapes of toes, a closing member for each pair of jaws, an equalizer having operative connection with said closing members in all positions which the diflerent pairs of jaws assume in adjustment to different shapes of toes, and means for imparting through said equalizer jaw closing movements to said closing members, said equalizer being movable in the closing of the jaws to equalize substantially the pressures under which the upper is gripped by the diflerent pairs of jaws.

11. A toe gripper having, in combination, a gripper casing, a plurality of pairs of gripper jaws carried by said casing, a holder for each pair of jaws having a cylindrical portion extending within said casing to permit turning movement of the jaws to conform to different shapes of toes, a closing member for each pair of jaws movable lengthwise of said cylindrical extension and having a peripheral groove therein, and means for imparting jaw closing movement to said closing members comprising an equalizer extending into said grooves and movable to'effect a substantial equalization of the pressures under which the upper is gripped by the different pairs of jaws.

12. A toe gripper having, in combination, a plurality of pairs of jaws mounted for relative turning movements to conform to different shapes of toes, closing members for the different respective pairs of-jaws, an equalizer connected to said closing members and movable to efi'ect substantial equalization of the pressures under which the upper is gripped by. the different pairs, of jaws while maintaining its operative relation to said different pairs in any positions to which they are turned, and means for imparting jaw closing and pulling movement to said equalizer comprising a latch movable after the upper has been pulled to release said equalizer and permit the opening of the jaws.

a gripper casing, a plurality of pairs of gripper jaws carried by said casing and relatively adjustable to conform to different shapes of toes, an equalizer connected to the different pairs of jaws in all positions of their adjustment for substantially equalizing the closing pressures of the different pairs of jaws upon the upper, a gripper bar, a latch connecting said gripper bar 13. A toe grip-per having, in combination, A

to the equalizer for closing the jaws and for operating them to pull the upper, and means for moving said latch after the upper has been pulled to release said equalizer and permit the opening of the jaws.

In testimony whereof I have signed my name to this specification.

CHARLES F. PYM.

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