US2404497A - Lasting machine - Google Patents

Description

7 July 23, 1946. H. A. IMHQF LASTING MACHINE Filed July 18, 1945" 2 Sheets-Sheet 1 Inventor I Herman A. [mhof ,illllllll! H. A. IMHQF LASTIN-G MACHINE Filed Jul 18, 1945 62 July 23, 1946.

2 Sheets-Sheet 2 m M 0 6 4 z,

Patented July 23,1946

UNITED STATES LASTING MACHINE Herman A. Imhof, Beverly, Mass;-, assignor to United ShoeMachinery Corporation, Flemington, N. 1., a corporation of New Jersey Application July 18, 1945, Serial No. 605,697

12 Claims.

. This invention relates to lasting machines and particularly to side-lasting machines of the type disclosed in United States Letters Patent No. 2,201,866, issued May 21, 1940, on an application filed in the name of R. H. Lawson, certain parts of which ar shown and described in more detail in United States Letters Patent No. 1,854,204 and No. 1,963,170, issued April 19, 1932, and June 19, 1934, respectively, on applications also filed in the name of R. H. Lawson. It is to be understood, however, that the invention is not limited to machine organizations of the character exemplified by such prior disclosures.

Machines of the type disclosed in the abovementioned patents comprise lasting units arranged to operate progressively along the opposite sides of a shoe supported on a jack as the jack is moved, automatically, to shift the shoe in a lengthwise direction relative to the lasting units. These lasting units include upper-tensioning grippers and upper-securing devices which, during the intervals between movement of the shoe by the jack, seize and tension the upper simultaneously at opposite sides of the shoe, and then lay the tensioned upper inwardly, over the feather of the insole, and press it firmly against a rib on the insole to which the tensioned upper is secured by means of fastenings driven through the upper and the rib. Also associated with each lasting unit, is a guidin presser-foot having a rib-engaging face provided with cavities in which the driven fastenings are clinched and, when the jack is being operated to move the shoe, the, lasting units are urged apart by a spring to press these guidin presser-feet yieldingly against the opposite inside faces of the insole rib, while the shoe is supported with its bottom pressed yieldingly up against these presser-feet by a spring associated with the jack. Subsequently, however, when movement of the shoe has ceased, and during the operation of the lasting units, these units are locked in the positions to which they had been previously moved, with their guiding presser-feet held against the ribs, and the tension of the jack spring is increased, or the jack locked, to hold the shoe bottom up firmly against the guiding presser-feet.

As the operation of each lasting unit proceeds, the upper, after it has'been tensioned, is laid in over the feather of the insole and pressed against the outside face of the rib by an overlaying member, through which the fastening is subsequently driven. These overlaying members are moved positively inward from beyond the edge of the shoe and toward opposite inside 'faces of the-in;-

sole rib, at a slight angle to the bottom of the shoe, and, before the fastening is driven, press the upper materials firmly against the rib. Since age which might result therefrom, it has been proposed to mount the guiding presser-feet on their respective lasting units withthe capability of yielding, to accommodate suchvariations in thickness of the upper materials before undue strain could be imposed on the parts, and an arrangement of this kind is shown in Patents Nos. 1,963,170 and 2,201,866, mentioned-above.

While the arrangement just referred; to has proved to be wholly satisfactory, in accommodating such variations in the thickness of the upper materials as are present in the usual types of shoes, the extent of such inward yielding movement of the guiding presser-feet may, where abnormally wide variations in the thickness of the upper materials are encountered, as may be the case at different points along the sides of certain types of shoes or between shoes of different kinds, become excessively largeand so great as to be 30 detrimental to the lasting operation inasmuch as it may cause deflection of thelinsole rib, under the pressure of the overlaying member as transmitted to the rib by the interposed layers of the upper material, far enough awayirom the correct position in which it should be held by the ribengaging face of the guiding presser-foot to prevent the proper insertion of thefastenings. Also, since the fasteningsare clinched in cavities formed on the rib-engaging faces of the guiding presserfeet, such excessive inward yielding movement may so displace these cavities, relative to the line of drive of the fastenings, that the fastenings will not be clinched properly, if at all. This inward yielding movement of the guiding presserfeet will also be accompanied by a downward movement of the shoe, which is not free to move in a: widthwise direction, due to the fact that the overlaying members mov inwardly at a slight angle to the bottom of the shoe. As a result, where thicker upper materials are encountered, the fastenings may be driven considerably higher up in the insole rib than is desirable.

It is, therefore, an object of this invention to provide, in a lasting machine of the typemen- .55 tionecl, novel and improved means for operating prevent undue wear and the danger of part breakthe overlaying members 3 V which are adapted automatically to compensate for variation in the I thickness of the upper materials, from point to point along the opposite sides of a shoe, asthe I lasting operation proceeds, without altering the position of the guiding presser-feet or depressing the shoe.

To this end, and in accordance with my invention, in the herein illustrated machine in position, as above explained, and the overlaying members are operated by novel mechanism I including means, individual to each overlaying member, adapted to yield when the tensioned upper has been pressed, by the overlaying members, against the rib with a predetermined amount of pressure. More specifically, these yieldable means comprise springs which are associated with a power-operated actuating member that is common to both of the overlaying members and these springs are independently adjustable for varying the pressure applied to the tensioned upper by the associated overlaying member.

The above and other objects and features of this invention will be obvious to those skilled in j the art from the following detailed description of a preferred embodiment thereof, illustrated in the accompanying drawings, and will be pointed out in the claims.

shown in Fig.1, drawn at an enlarged scale and showing the operating mechanism of one of the 1 lasting units.

Referring to the drawings, the machine therein illustrated is in general the same as that dis- 4 mechanism is provided for imparting such movements to the lasting units during the operation of the machine which is similar to that disclosed in these patents, and more particularly described in Patents Nos. 1,854,204 and 1,963,170.

Referring to Fig. 2 of the drawings of this application, the supporting member 2 of eachof the lasting .units hasa cylindrical upper portion 2%) which is rotatably mounted in a sleeve-like mem- ,ber 22 and each of these sleeve-like members is pivotally supported on the overhanging portion I4 closed in the prior Patent No. 2,201,866 and comprises a pair of lasting units each including a 3 supporting member 2 on which is mounted a guid- :ing presser-foot 4, an upper-tensioning gripper 5, and an overlaying and upper-securing memher 8, a shoe-supporting jack I0 and a main frame structure I2. The jack I0 is exactly similar to,

and operates in the manner of, the shoe-supporting jack which is describedin detail in the prior patent, just referred to, and, during the operation of the machine, is adapted to support a shoe,

including an upper U, assembled on a last L to the bottom of which is securedan insole I, and

to move it lengthwise, relative to the lasting unit in the manner explained in that patent.

The lasting units are likewise similar to those 5 disclosed in the patent just mentioned, the uppertensioning grippers 6 of the machine shown in the accompanying drawings corresponding to wise of a shoe supported on the jack and also for turning movement about vertical axes, normal to the bottom of the shoe, in the same manner as ineach of the above-mentioned patents, and

of the main framestructure I2 in the same manner as the corresponding elements of the lasting units disclosed in the two patents last mentioned. The lasting units are swung, in unison, about their pivotal mountings by operating mechanism whichis'similar to that disclosed in Patent No. 1,963,170 and which includes the links 24, 25,

a lever 28 and a shaft 30. As is the case in the arrangement of the machine disclosed in the patent just mentioned, during the operation of the jack to move the shoe lengthwise relative to the lasting units, these units are swung away from each other, through mechanism including a spring means, so that the guidingLpresser-feet are yieldingly held against the opposite inside faces of the rib R on the insole, and, during this feeding movement of the shoe, these'units are also rotated, Within the sleeve-like members 22, by operating means which is similar to the mechanism provided for this purpose in the machines disclosed in Patents Nos. 1,854,204 and 1,963,170. In the herein illustrated machine these mechanisms include operating links 32. At the conclusion of the feeding movement of the shoe, and during the operation of the units to tension the upper materials and to secure it to the rib R, the lasting units are locked against swinging movement so that their guiding presser-feet are rigidly held against the opposite inside faces of the rib, by locking mechanism, not here shown, associated with the shaft 30, and similar to that disclosed in the two last-mentioned patents.

' The means for laying the tensioned upper materials in over the feather of the insole and for securing it to the insole rib at opposite sides of the shoe simultaneously, comprises the overlaying and upper-securing members 8 which correspond to the Wiper portions (I62) of the so-called carriers I50) of the fastening, forming, and driving mechanism disclosed and described in detail in Patent No. 1,963,170. As is explained in that patent, during the operation of the machine, these carriers are reciprocated, by mechanism including bell-crank levers (I provided with gear se ments (I18) that mesh with rack teeth (I75) formed on operating slides (I'M), and, during these reciprocating movements, the fastening is formed, the upper laid in over'the feather of the'insole and pressed against the insole rib, and

the fastening is driven through the upper mateof the machine of Patent No. 1,963,170 just mentioned; That is, the bell-crank lever 40, see Fig.

2 of the drawings of this application, is provided witha gear segment 42 which meshes With rack teeth 44 formed integrally in an operating slide member 46. Each of the lasting units of the presentmachine also has-a spring-actuated driving lever 48 which by movement of the operating slide outwardly, to the right inFig.'2, is moved into a'position to engage a latch member 50 which corresponds to the latch (200) in the machine of Patent No. 1,963,170. In these previous machines, as shown in the last-mentioned patent and also in Patent No. 2,201,866, these operating slides are positively actuated by mechanism including an operating crosshead, common to both of the lasting units, and a cam mounted on a main drive shaft of the machine and the guiding presser-feet of each lastingunit are yieldingly mounted on their corresponding supporting members.

In the herein illustrated machine, see Fig. 2, each of the guiding presser-feet is secured rigidly to its supporting member 2, by means of screws 5| and is provided with a recess 53 which, as will appear below, serves as a clinching cavity. The bell-crank lever 40 of each lasting unit is operatively connected by means of a link 52, slide 54 and link 56, to a bell-crank lever 58 carried by an operating crosshead 80, common to both units. This crosshead is supported by an arm 62,

pivoted to the frame portion 14, see Fig. 1, and

also by one end of a lever 64, also pivoted to the frame member. The opposite end of the lever 64 carries a cam roll 65 which engages a cam groove 88 of a cam 10 which is carried by a main drive shaft 12 of the machine. The arrangement so far described is similar to that in the prior patents mentioned above, and when the main drive shaft is rotated the crosshead 60 is moved up and down with a parallel motion eflect, produced by the arm .62 and lever B4,,which keeps the crosshead substantially level.

Each of the bell cranks 58 is pivoted to the crosshead on a stud 8D and has an upwardly extending portion that is provided with a recess 82 in which is seated one end of a compression spring 84. The opposite end of each of these springs engages a plug 86 which is screwed into a threaded bore 88 in a portion 90 of the crosshead. Adjacent to the upper ends of these bell-crank levers the crosshead 60 is provided with oppositely facing abutment surfaces 92 which serve as stops for limiting the swinging movement of the bell crank 58, about their supporting studs 80, in one direction.

The herein illustrated machine operates in the same general manner as the machines of the prior patents mentioned above, and while the shoe is being fed along, the lasting units are urged apart so as to hold the guiding presser-feet yieldingly against the opposite inside faces of the rib R of the insole I and the unitsare rotated about vertical axes, so as to position the units properly with respect to the curving rib. After the upper materials U have been tensioned at opposite sides of the shoe the crosshead 60 is moved upwardly, by the cam 10, and the overlaying members 8 are moved inwardly, through the action of their operating slides 46, to lay the tensioned upper in over the feather of the insole and to press it firmly excessive pressure can be applied orfundue strain be imposedon the operating connections-" Dur ingv downward movement of thecrosshea'd lillthe operating: slides 46 and overlaying. members 8 will: be moved outwardly from the'shoe, to the right in Fig. 2, and the driving levers 48 will be latched by thelatches 50, see Fig. 1. These out- Ward'movements are positive since the bell cranks 58 will now bear against the stop surfaces 92 of thecrosshead.

The upward movement of the crosshead 60 is such that, with no work in the machine, each overlaying member will move in toward and almost into contact with its associated guiding presserefootd. Thus, when operating on a shoe, as these members move inwardly, the springs 84 will always be compressed somewhaiuand, regardless of wide variations in the thickness of the upper. materials at different locations spaced along the shoe, or between shoes of different kinds, asubstantially uniform pressure will be applied by' thes overlaying members and the intensity of this pressure may be readily varied to suitdifferentoperating conditions by adjustment of the screwxp-lugs .85 which, are provided with 'screwedriver'slots 88 for this purpose. Moreover, since variations in the thickness of the upper materials are accommodated by compression'of the springs 84, the overlaying members will move inwardly toward theshoe only the distance determined by the upper materials and, therefore, the shoe will not be depressed. It will also bev observed that, regardless of where either of the overlaying members stop in their inward movement, the relationship of the clinchingrecesses 53 in the guiding presser-feet -4-;to their: associated overlaying members will always remain the same since these overlaying members move in straight paths and the guiding presser-feet cannot shift their positions with respect to these paths. Thus fastening devices driven through these overlaying members, as

. through the driving passageways I00 formed against the outside faces of the rib at opposite sides of the shoe simultaneously. When the upper materials havethus been brought into contact with the rib and as the upward movement of the crosshead continues, the springs 84 will yield and apply a measured pressdraadjustably variable by means of the screw plugs 86, to the upper materials. The springs 84 are. of a strength sufficient to insure that the tensioned upper materials will certainly be moved into engagement with the insole rib and into the position shown in Fig. 2 by each overlaying member but are also arranged to yieldas shown inFig. 2, before an therein. by a driver I02, see Fig. 2, will always strike the clinching recesses 53 of the guiding presser-feet squarely and :will, therefore, be clinched properly. As has been noted above, the guiding presser-feet 4 are secured unyieldingly, to their supporting members. Hence, with the units locked against movement, the insole rib is held firmlyinproper position and the pressure of the overlaying members, regardless of the setting of the springs 84, cannot deflect or move the insole .rib out of this position; all inequalities in the thickness of the upper materials .beingcompensated for by the overlaying members and not by inward movement of the guiding presser-feet. Also, since the operating means for the overlaying member of each lasting unit is yieldable independently of, the other unit, any differences in the thickness of the upper materials at opposite sides of a shoe, will be accommodated.

Having described my invention, what I 0mm shoe at the opposite sides thereof to lay the OPPO'P.

site marginal portions of the upper over themsole and againstfithe outside faces of said rib, and

mechanism for thus moving said overlaying mem 1 bers inwardly and toward the rib comprising a power-operated member, common to-both over- 1 laying members, and yieldable means opera tively connecting each of said overlaying members for movement by the power-operated member.

2. A lasting machine having, in combination, a work support arranged to carry a shoe having a ribbed insole and an upper assembled on a last, a pair of units for lasting the upper at the opposite sides of the shoe, each unit including a guid ing 'presser-foot rigidly secured thereto for engaging an inside face of the rib on the insole, a

gripper for tensioning the upper and anoverlay ing member, movable inwardly from beyond the edge of the shoe and toward the'rib on the insole,

,member common to both units and yieldab'le means-operatively connecting each of said overlaying members for movement by thez'iower-v operated member. 7

V 3.v A lasting machine having, in combination, a pair of units for lasting the opposite sides of a shoe, having a ribbed insole and upper materials assembled on a last, in different locations spaced lengthwise of theshoe, progressively as the position of the shoe is shifted relatively to said units, eachunit including a guiding presser-fo'ot rigidly secured thereto for engaging an; inside face of the rib on the insole and an overlaying member, movable inwardly from beyond the edge of the shoe and toward the rib on the insole,'for laying the upper materials in over-the feather of the insole [and for pressing the materials against the rib,

means for separating the units so as to urge their guiding presser-feet yieldingly against the inside faces of the insole rib as the position of the shoe is being shifted, means for locking the units in position to hold the guiding presser-ieet unyieldingly' against the rib during the operation of said units and the inward movement of the overlaying members, and mechanism for so moving the overlaying members inwardly toward: the

insole: ribcomprising a power-operated member,

common" to both units and means for yieldingly connecting said overlaying members for movement by the power-operated member.

4. A lasting machine having, in combination,

a worksupport. arranged to carry a shoe having a ribbed insole and an; upper assembled one; last and movable to shift the position of the shoe relatively to lasting instrumentalities, a pair of units for lasting the upper and for securing it in lasted position to the insole rib at: opposite sides: of the shoe, in different locations spaced lengthwise of' the shoe, progressively as the position. of the shoe is shifted, each unit including a guioing presser-footrigidly secured thereto for engaging an inside face ofithe rib? on the insole, a: gripper for tensionirfg the upper, and an overlaying member, movable inwardly beyond: the edge ofithe shoe and toward the rib on the insole for laying the-tensioned upper, in over the feather of the" insole and'forpressing it against the outside" face of the rib, means for, separating said units to hold' their guiding presser=feet yield-' ingly' against the inside faces of the insole rib while the position of the shoe is being shifted, means for locking the units against separating movement so that the guiding -pre'sser feet are held unyield'ingly' against the inside faces of the rib on the insole during the operation of the lasting units and the inward movement ofsaid overlaying members, and mechanism for so moving said overlaying members inwardly and toward the rib on the insole, comprising a power--operated member common to both units and yieldable means operatively connecting each of said overlaying members for movement by the poweroperated member.

5. A lasting machine having, in combination, means for operating at opposite sides of a shoe to Work the opposite marginal portions of a shoe upper over a last having a ribbed insole positioned thereon, said means including a pair of presser feet arranged to engage the inner faces of said rib at opposite sides of the shoe and overlaying members movable inwardly, over the bottom of the shoe at the opposite sides thereof to lay the opposite marginal portions of the upper over the insole and against the outside faces of said rib, and means for thus moving Said overlaying members inwardly and toward the insole rib comprising operating mechanism associated with each overlaying member, a power-operated member common to both overlaying members, and means for connecting said power operatedl membar to the operating mechanism of each overlaying member including a spring adapted to yield when the pressure exerted, by the overlay ing member, on the upper as it is pressedag'ainst the insole rib by said overlaying member, exceeds a predetermined va1ue.

6. A lasting machine having, in combination, a work support arranged to carry a shoe having a ribbed insole and an upper assembled on a last, a pair of units for lasting the upper atthe opposite sides of the shoe, each unit including a guiding presser-foot rigidly secured thereto for engaging an inside face of the rib on the insole, a gripper for tensioning the upper and an overlayingmember, movable inwardly from beyond the edge of the shoe and toward-the rib on the insole, for laying the tension'ed' upper in over the feather of the insole and for pressing it against the rib, means for separating the units so as to urge their guiding presser-feet against the inside faces of the insole rib and for locking the units in position to hold the guiding prfesser-f eet unyieldingly against the rib during the operation of said units and the inward movement .of the overlaying members, and means for so moving said overlaying members inwardly and toward the insole rib comprising operating mechanism associated with each unit, a power-operated member common to both units, and means for connecting said power-operated member to the operating mechanism of each unit including a spring adapted to yield: when the pressure exerted, by the overlaying member of the particular unit, on the'upper as it is pressed against the insole rib by said overlaying member, exc'ee'd's a predetermined value.

7. A lasting machine having, in combination, a pair of units for lasting the opposite sides of a shoe, having a ribbed insole and upper materials assembled on a last, in different locations spaced lengthwise of the shoe, progressively as the position Of the S1106 is shifted relatively to said units, each unit including a guiding presserfoot rigidly secured thereto for engaging an inside face of the rib on the insole and an overlaying member movable, inwardly from beyond the edge of the shoe and toward the rib on the insole, 'for laying the upper materials in over the feather of the insole and for pressing the materials against the rib, means for separating the units so as to urge their guiding presser-feet yieldingly against the inside faces of the insole rib as the position of the shoe is being shifted, means for locking the units in positionto hold the guiding presser-feet unyieldingly against the rib during the operation of'said units and the inward movement of the overlaying members, and means for so moving said overlaying members inwardly and toward the insole rib comprising operating fmechanism associated with each unit, a power-operated member common to both units, and means for connecting said power-operated member to the operating mechanism of each unit including a spring adapted to yield when the pressure exerted, by the overlaying member of the particular unit, on the upper as it is pressed against the insole irib by said overlaying member, exceeds a predetermined value.

8. A lasting machine having, in combination, a work support arranged to carry a, shoe having a ribbed insole and an upper assembled'on a last and movable to shift the position of the shoe relatively to lasting instrumentalities, a pair of units for lasting the upper and for securing it in lasted position to the insole ribs at opposite sides of the shoe, in different locations spaced lengthwise of the shoe, progressively as the position of the shoe is shifted, each unit including a guiding presser-foot rigidly secured thereto for engaging an inside face of the rib on the insole, a gripper for tensioning the upper, and an overlaying member, movable inwardly beyond the edge of the shoe and toward the rib on the insole for laying the tensioned upper in over the feather of the insole and for pressing it against the outside face of the rib, means for separating said units to hold their *guiding presser-feet yieldingly against the inside faces of the insole rib while the position of the shoe is being shifted, means for locking the units against separating movement so that the guiding presser-feet are held unyieldingly against the inside faces of the rib on the insole'during the operation of the lasting units and the inward movement of said overlaying members, and means for so moving said overlaying members inwardly and toward the insole rib comprising operating mechanism assoc ated with each unit, a power-operated member common to both units, and means for connecting said power-operated member to the operating mechanism of each unit including a spring adapted to yield when the pressure exerted, by the overlaying members of the particular unit, on the upper as it is pressed against the insole rib by said overlaying member, exceeds a lay the opposite marginal portions of the upper over the insole and against the outside faces of said rib, and means for thus moving said overlaying members inwardly and toward the insole rib comprising operating mechanism associated with each overlaying member,a crosshead movable to operate the overlaying members, a pair of bellcrank levers pivotally mounted on said crosshead, links connecting one arm of each of said bell-crank levers with the operating'mechanism of one of said overlaying members, abutment means on said crosshead engaging the opposite arms of said bell-crank levers for limiting and swinging movement in one direction, and spring means for normally holding said bell-crankarms against the abutment surfaces, said spring means each being "adapted to yield and'thereby arrest the inward movement of the, associated overlaying member after the upper materials have been pressed'against the insole rib with a predetermined force. I V Y 10. A lasting machine having, in combination, a work support arranged to carry a shoe having a ribbed insole and an upper assembled on a last, a pair of units for lasting the upper at the opposite sides of the shoe, each unit including a guiding presser-foot rigidly secured thereto for en'- gaging an inside face of the rib on the insole, a gripper for tensioning the upper and anoverlayin member, movable inwardly from beyond the edge of the shoe and toward the ribon the insole, for laying the tensioned upper in over the feather of the insole and for pressing it 'against the rib, means for; separatingthe units so as tourge their guiding-presser-feet against the inside faces of the insole rib and for locking the units in position to hold the guiding presser-feet unyielding against the rib during the operation of said units and the inward movement of the overlaying members, and means for so moving said overlaying members inwardly and toward the insole rib, comprising. operating mechanism associated with each unit, a crosshead common to both of the lasting units and movable to operate the overlaying members, a pair of bell-crank levers pivotally mounted on said crosshead, links connecting one arm of each of said bell-crank levers with the operating mechanism of one of the lasting units, abutment means on said crosshead engaging the opposite arms of said bell-crank levers for limiting their swinging movement in one direction, and spring means for normally holdv ing said bell-crank arms against the abutment surfaces, said spring means each being adapted to yield and thereby arrest the inward movement of the assoc ated overlaying member after the upper materials have been pressed against the insole rib with a predetermined force.

11. A lastin machine having. in combination, a pair of units for lasting the op osite si es of a shoe, having a ribbed inso e and u per materials assembled on a last, in diiferent locations spaced lengthwise of the shoe. progressively as the position of the shoe is shifted relatively to said units. each unit including a guiding presser-foot ri idly secured thereto for engaging an inside face of the rib on the insole and an overlaying member movable, inwardly from beyond the edge of the shoe and toward the rib on the insole, for laying the upper materials in over the feather of the insole and for pressing the materials against the rib, means for separating the units so as to urge their guiding presser-feet yieldlngly against the 7 inside faces of the insole rib as the position of the III shoe is being shifted, means for locking the units in position to hold the guiding presser-feet unyieldingly against the rib during the operation of saidlunits andvthe inward movement of the overlaying. members, and means for so moving said overlayingmembers inwardly and toward the insole rib,vcomprising operatingmechanism associated with each unit, a crosshead common to both of the lasting units, and movable to operate the overlaying members, a pair of bell-crank levers pivotally mounted on said crosshead, links connectingone arm of each of said bell-crank levers with the operating mechanism of one of the lasting units, abutment means on said crosshead engaging the'opposite arms of said bellcrank levers for limiting their swinging movement in one direction, and spring means 'for normally holding said bell-crank arms against the abutment surfaces, said spring -means ;each being 12 A lasting machine having, in combination,

1 a worksupport arranged to carry a shoe having a ribbed insole and an upper assembled on a last i and movable to shift the position of the shoerelatively to lasting instrumentalities, a'pair of units for lasting the upper and forsecuring it in lasted position to the insole ribat opposite sides of the 1 she, in difierentlocations spaced lengthwise of the shoe,'progressively as the position of the shoe is shifted, each-unit including a guiding presser- 1 foot rigidly secured thereto for engaging an'inside face of the rib on the insole, a gripper for tensioning theupper, and an overlayingmember,

12 movable inwardly beyond the edge of the shoe and toward the rib on the insole for laying. the tensioned upper in over the feather of the insole and for pressing it against the outside face of the rib, means for separating said units to hold their guiding presser-feet yieldingly against the inside faces of the insole rib while the position of the shoe is being shifted, means for locking the units against separating movement so that the guiding presser-feet are held unyieldingly against the inside faces of the rib on the insole during the operation of the lasting units and the inward movement of said overlaying members, and means for so moving said overlaying members inwardly and toward. the insole rib, comprising operating mechanism associated witheach unit, a crosshead'common to both of the lasting units and movable to operate the overlaying members, a pair of bell-crank levers pivotally mounted on said crosshead, links connecting one arm of :each of said bell-crank levers with the operating mechanism of one of the lasting units, abutment means on said crosshead engaging the opposite arms of said bell-crank levers for limiting their. swinging movement inone direction, and spring means for normally holding said bell-crank arms against the abutment surfaces, said spring means each being adapted to yield and thereby arrest the inward movement of. the associated overlaying member after the upper materials have been pressed against the insole rib with a predeter-

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