US3061854A - Gaging mechanisms - Google Patents

Description

Nov. 6, 1962 K. v. BECKER ETAL 3,061,854

@AGING MECHANIsMs Filed April 1e, 1961 4 sheets-sheet 1 fo f2 Inventors /(0/^/ l( Bec/fel" Ifo/m 6. Lyness Nov. 6, 1962 K. v. BECKER ETAL 3,061,354

GAGING MECHANISMS Filed April 18. 1961 4 Sheets-Sheet 2 Nov. 6, 1962 K. v. BECKER ETAL 3,061,854

GAGING MECHANISMS 4 Sheets-Sheet 3 Filed April 18, 1961 K. v. BECKER ETAL 3,061,854

Nov. 6, 1962 GAGING MECHANISMS 4 speets-snet 4 Filed April 18. 1961 ilnite This invention relates to shoemaking machines of the sole rounding type and, more particularly, is concerned with improvements in gaging mechanism similar to that disclosed in United States Letters Patent No. 2,869,157, granted January 20, 1959, upon an application of John S. Lyness.

In United States Letters Patent No. 2,825,076, granted March 4, l958 upon an application of Gerald W. Cleversey, there is disclosed an automatic sole rounding machine for which the above-mentioned Lyness structure is suited and to which the illustrated embodiment of the present invention is applicable. In the use of this machine, a shoe and a tool head move relatively to each other to cause a round cut to be made progressively about the periphery of the sole of the shoe whereby the sole edge is formed with the desired contour. The sole edge extension may be variable and is under the control of gaging mechanism which relatively positions the tool head and the shoe throughout the rounding cut. The gaging mechanism is associated with the tool head and includes a gage and a crease guide which are effective selectively during different stages of the rounding operation, the former being employed While vthe forepart and heel part portions of the shoe are operated upon and the latter while the shank portion of the shoe is operated upon.

The above-mentioned Lyness gaging mechanism embodies an invention of Lloyd L. Curtin, disclosed in United States Letters Patent No. 2,799,031, granted July 16, 1957, which pertains to a gage having gaging members constituted by pivoted wings which are swung, under the control of a cam, between an extended relationship in which the Wings present a concave gaging surface to the shoe and a collapsed relationship in which the eifective gaging surface of the Wings is convex. The cam is so designed that the shape of the gaging surface of the gage is automatically changed to accommodate the contour of the part of the shoe which is presented to ythe gage.

The gaging mechanism of the Lyness 4patent also embodies an invention of Gerald W. Cleversey et al. which is disclosed in United States Letters Patent No. 2,820,976, granted January 28, 1958, and provides `for automatic setting of the above-mentioned crease guide in an operative position, just before it is to become effective as a guide, by locking the crease guide against retractive movement from this position throughout its period of use.

lt is one object of the present invention to increase the eti'icacy of gaging mechanism including the abovementioned features, in respect to the avoidance of any irregularity in the contour of the sole edge corresponding to the ridge or shoulder, for example, at the tip line of any shoe having an ordinary toe cap in its upper or at a seam joining parts of a shoe upper together.

To this end and in accordance with one feature of States tinten Cine the invention, the gaging members of the gaging device disclosed herein, instead of being held in a predetermined variable relationship as before, are normally biased into engagement with the shoe, whereby the relationship of the gaging members in respect to each other is determined by the contour of the portion of the shoe which is presented to the gaging members, but are locked against movement relatively to each other during a certain period in which the tip line of the shoe is traversed. More specitically, as Ithe rounding cut traverses the vicinity of the tip line of the shoe with the gage members biased against the shoe and positio-ned relatively to each other by the shoe, the leading gage member will have first reached the tip line the gage members are locked against movement with respect to each other and are held locked until just before the trailing gaging member leaves the tip line. The change in curvature of the portion of the shoe which is presented to the gaging members while they are locked causes the trailing gaging member to be gradually brought to the side of the shoe beyond the tip line. Thus, no sudden displacement of the tool head and shoe occurs which corresponds to the ridge or shoulder on the shoe upper at the tip line and, accordingly, no abrupt irregularity occurs in the co-ntour of the sole edge corresponding to the shoulder on the shoe upper at the tip line. In brief, invention is to be recognized in applicants gage device in respect to the biasing of the gaging member against the shoe and their locking at selected periods during the rounding operation and also in means for elfecting such operation and control of the gaging members.

To aord selective control of the sole edge extension of the shoe at its forepart and heel part, provision has been made in the illustrated gaging mechanism, in accordance with a further feature of the invention, for variably positioning the above-mentioned gage in such a manner that the relative position of the shoe and the tool head can be varied individually for either the forepart or heel part stage of the rounding operation. To this end and in accordance with a yfurther feature of the invention, the illustrated gaging device includes means for operating the gage comprising a pair of cams, one of which is effective during the forepart stage of the operation and the other of which is etective during the heel part stage, together with individually adjustable cam followers, one for each of the cams. Hence, the position of the gage for either the forepart or the heel part stage of the rounding operation can be adjusted without affecting its position for the other stage of operation. Moreover, the above-mentioned cams are readily detachable from the machine so that a substitute cam, as the style requirements of the Work may demand, may readily be installed upon the machine vfor either of the abovementioned stages of the operation.

In respect to the aspect of the invention involving the crease guide, the crease guide as disclosed herein is to be set in a position determined by its engagement with the shoe and is to be locked in this position as contemplated under the above-mentioned Lyness patent and for the same purposes, namely, for insuring a smooth interchange in the usage of the gage and guide and that the sole edge extension in the shank portion of the shoe will not be less than a predetermined minimum.

The crease guide in the prior Lyness construction is used for gaging purposes only while the inside shank portion of the shoe is operated upon. The present invention contemplates the use of the illustrated crease guide not only at ythis time but also while the outside shank portion of the shoe is operated upon. With this fact in view, the illustrated embodiment of the invention includes, with provision for locking the crease guide against retractive movement, means for advancing the crease guide toward the shoe at each side thereof, if the position of the guide as locked would result in an excessively narrow sole extension in either case. More particularly, this operating means for the crease guide includes two cams, one for the outside of the shoe and the other for the inside of the shoe, which selectively operate the crease guide through cam followers, one for each of the cams; and each follower is individually adjustable so that the position of the crease guide at either the inside or the outside f the shoe can be adjusted Without affecting its position at the other side of the shoe. Similarly, either of the above-mentioned cams may be readily replaced by another, in accordance with the style requirements of the work being operated upon, without requiring a change in the other cam if Ithat cam is satisfactory.

The above and other objects of the invention, as well as various more specific aspects of its above-mentioned features, will next be described in the following detailed description of an illustrative embodiment of the invention and will be defined in the appended claims.

In the drawings,

FIG. 1 is a sectional side elevation of a gaging device embodying the invention, as viewed from the left;

FIG. 2 is a plan view of the device;

FIG. 3 is a sectional plan view, the section being taken along the line III- III of FIG. 1;

FIG. 4 is a sectional plan view illustrating the locked state of the gage, the section being taken along the line IV-IV in FIG. l;

FIG. 5 is an inverted plan view illustrating a shoe engaged at different locations by the gaging device;

FIG. 6 is 'a sectional view, the section being taken along the line VI-VI in FIG. 5, showing the relationship between the device and at the inside shank portion thereof, the shoe being bottom up; and

FIG. 7 is a sectional view similar to FIG. 6, the section being taken near the outside tip line of the shoe along the line VII- VII in FIG. 5.

The illustrated gaging device is adapted for use in a shoemaking machine, adapted for performing a peripheral operation upon a shoe, such as the machine of the above-noted Cleversey Patent No. 2,825,076 which has gaging mechanism for which the present gaging device may be substituted. Counterparts of the tool head 10 and Vvertically reciprocating chopping knife 14 of the Cleversey machine are found in a tool head 10 and knife 12 (FIG. 1) of the structure `disclosed herein. A shoe to be rounded is supported upon an automatically operated jack (not shown but such as the jack 12 of the Cleversey machine) having a gyratory movement which causes the periphery of the shoe to be presented progressively to the knife in a direction which is always tangent to the periphery of the shoe at the point of operation of the knife thereupon.

YA shoe to be rounded is held on the jack bottom up and is presented to the knife with the upper surface of its Welt, or the corresponding surface of the shoe if it is not a welt shoe, seated upon an anvil 14 (FIG. 1) and a crease guide 16, the upper surface of the 'anvil and crease guide being flush with each other. The margin of the sole is yieldingly held iagainst the anvil and crease guide by a bottom rest (not shown) which presses against the bottom of the sole.

The amount of the sole edge extension formed by the rounding cut is controlled at the shank portion of the shoe by the crease guide 16 which engages the side of the shoe close to the welt crease and at other times by a gage 18 which engages the side of the shoe at a somewhat higher level.

The gage comprises leading and trailing gage members 20, 22 (FIGS. 4 and y1) which are hinged upon a stud 24 and are held thereon by a screw 2-6 Which is threaded into the stud. The stud is fixed upon a slide 28 which is mounted to slide freely lengthwise thereof in a frame 30 of the device. In the rear portion of the slide there is mounted a pair of cam followers 32, 34 which are rotatably mounted upon carriers 36, 38, respectively, having cylindrical shanks which slide freely axially thereof within the slide 28. The cam followers 32, 34 engage a heel part cam 40 and a forepart cam 42, respectively, these cams being detachably mounted upon a drive shaft 44 which is rotated in synchronism with the movement of the jack like the corresponding cam shaft tin the above-mentioned Cleversey patent. The slide 28 is biased rearwardly by a spring 46 which is compressed between a member 48 which abuts the slide and another member 50 Vwhich slides freely within a recess 52 in the frame 30. A screw 54, threaded in the frame, is provided for adjusting the compression in the spring 46. Each of the cams 40, 42 has an operative sector and la relieved sector Which are so arranged that the operative sector of the cam 40 is effective while the heel part of the shoe is being operated upon and the operative sector of the cam 42' is effective while the forepart portion of the shoe is being operated upon. The degree of advance of the gage 18 under the control of the cams 40, 42 is selectively adjustable on account of a provision for individual adjustment of the cam followers 32, 34 with the slide 18. For this purpose, there project from the carriers 36, 38- lugs 56, 58, respectively, which are engaged by a pair of adjusting screws 60, 62. 'Ihe screws are threaded into a lug 64 which is integral with the slide 28 and are frictionally held in their settings by a clip 66 which spans the screws and is held thereagainst by a pair of cotter pins 68, the pins being clinched against a plate 70 which is fixed to the lug 64. The setting of the cam followers 32, 34 may be indicated by graduations on the plate 70 and indices marked on the lugs 56, 5S. It will now be evident that adjustment of the gage 18 made by use of the screw 60 does not affect the adjustment of the gage which is determined by the screw 62, land vice versa. Hence, the gage may be positioned for the forepart and heel part portions of the operation individually and different sole edge extensions can be obtained at will along these different portions of the shoe.

The gage members 20, 22 are mounted to swing both bodily and with respect to each other about the stud 24 under the control of a linkage which causes the movement of the members with respect to each other to occur equally in opposite directions. This linkage comprises links 72, 74 which at their forward ends are pivoted to the members 20, 22, respectively, and at their rear end are pivoted upon a cross bar 76. This bar is pivoted at 78 upon a support 80 which is mounted to slide longitudinally thereof in the frame 30 under the guidance of a roll 82 which runs freely in a slot 84 formed in the slide 28. The support also slides freely within a lug 86 which is xed upon the slide 28 and carries, near its rear end, a snap ring 88 which forms a seat for a compression spring 90. This spring biases the support 80 forwardly whereby the gage members 20, 22 and a stop for limiting forward movement of the support are normally held `in their extended relationship, ywhereiny the gaging surface afforded by the members is concave. Except at the ends of the shoe, where the curvature of its contour is more pronounced than the concave form of the gage members 20, 22, the members engage the shoe over a considerable length, as illustrated in the lower portion of FIG. 5, because of their curved shape and the fact that they areV constantly biased against the shoe by a spring 90. Similarly, when the concave shank portions of the shoe are operated upon, the gage members 20, 22

assume a collapsed relationship and present a convex work engaging surface to the shoe at such times. Thus, for the most part, the gaging members 20, 22 are positioned relatively to each other in accordance with and by the shape of the shoe and swing both bodily and relatively to each other -about the pivot 24- as the contour of the portion of the shoe presented to the gage members changes.

The -rear end of the spring 90 seats upon a slide 92 having iixed therein a guide rod 94 -which projects forwardly within the spring, the slide being mounted to move freely lengthwise thereof within slideways formed in the frame 30. A roll 96 mounted upon the rear end of the slide 92 is adapted to engage a cam 98 which is mounted upon the shaft 44.

At those times when the rounding cut passes the tip line of the shoe at each side thereof, the gaging membes 20, 22 are locked for a short period against swinging movement relatively to each other, for a purpose to be described later. This locking of the gaging members is effected by a wedge pin 100 which is mounted to slide axially thereof within the lug 86 and is provided with a wedge surface 102 which, when the pin 100 is moved upwardly, as viewed in FIG. 4, wedges the support 80 lixedly within the lug 86. Although the gage members 20, 22 are thus locked against movement relatively to each other about the stud 24 they may, nevertheless, swing bodily about the stud under the control of the links 72 and cross bar 76, whereby the gage members remain continuously seated against the side of the shoe regardless of changes in contour or attitude of the portion of the shoe which is presented to the gage members while they are locked. The locking action of the pin 100 occurs in response to forward movement of the slide 92 `and is effected by structure comprising a cam 164 fixed to the slide and a lever 106 which is pivoted at 19S and carries a roll 110 adapted to engage the cam on the frame 30. Upon the lforward end of the lever 106 is xed a plate 112 carrying a screw 114 which passes freely through the lever. Other screws 116, 118 which are threaded in the lever 106 are adapted to be tightened against the inner side of the plate 112, whereby the position of the plate on the lever can be adjusted both widthwise and angularly thereof as required for the proper operation of the pin 100. The plate 112 bears against a roll 12,1 mounted upon the left-hand end of the pin 100 and is adjusted, as described above, so that when the cam 104 is fully advanced the pin 100 is held in firm wedging engagement with the support 80. At the end of each period during which the gaging members 20, 22 are locked, the Pin 100 is moved downwardly (FIG. 4), to release the support, by a lever 122 having upon its left-hand end a shoulder 124 which is struck by one of two pins 126 carried 4by the cam 98. The lever 122 is pivoted at 12S upon the frame 30 and is biased by a spring 130 so that its forward end is normally held against the end of the pin 190. After each pin 126 strikes the shoulder 124 of the lever 122, the lever is swung counterclockwise (FIG. 4) whereby the forward end of the lever is removed from the wedge pin 100 and the spring 130 is compressed. As each pin 126 passes off the end of the shoulder 124, the lever 122, driven -by the spring 1343, imparts a sharp blow to the wedge pin whereby the latter is moved out of locking engagement with the support S0 and the gage members 20, 22 are again biased against the shoe upper by the spring 90. The inoperative position of the pin 100, the lever 122 and the lever 106 is determined by a stop screw 132 which is threaded in the lever 108 and is adapted to engage the frame 30.

The crease guide 16 has a circular work engaging portion connecting a pair of rearwardly extending legs which are mounted to slide lengthwise thereof in slots in the frame 30 and terminate in abutting relation to a pin 134 (FIGS. l and 3), the pin being iixed upon a lug 136 which is integral with a brake slide 138. The pin 134 passes through slots 140 in the frame 30 which permit limited free movement of the brake slide lengthwise thereof wtihin a slideway 142 formed in the frame 30.

The normal inoperative position of the crease guide 16, that is, a position somewhat in advance of any position it will occupy when in use, is determined by an adjusting screw 144 which is threaded into the frame 30* and acts as a stop for the lug 136 which is constantly biased toward the stop by a spring 146. Rearward movement of the brake slide and crease guide is adjustably limited by a screw 148 which is threaded in the lug 136 and is adapted to become seated against the frame 30 at the b-ottom of a recess therein.

The spring 146 is compressed between the lug 136' and a collar on a stud 150 having a semicylindrical rear end which seats upon a pin 152. This pin is fixed in the forward forked end of a slide 154 (FIGS. l and 2) which is mounted to slide lengthwise thereof in the frame 30 and houses a spring 156 which is somewhat stiier than the spring 146. The spring 156 seats at its forward end upon a member 158 which abuts a cam lever 160, the latter being pivoted upon a pin 162 which is xed in the frame 30. lust below and operated by the cam lever is a brake shoe 164 which is freely movable vertically within the frame 30 and normally rests gravitationally upon the brake slide 138 without having any braking effect upon the slide. The upper end of the cam lever 160 has the form of a hook facing the pin 152 which, under the impulse of the spring 146, urges the cam lever counterclockwise toward its inoperative position, as illustrated in FIG. 1; and under this condition, no force is applied to the brake shoe 164 by the cam lever. Locking of the slide 138 to the frame 30 by the lbrake shoe 164 is eifected under the control of a cam 166 which is carried by the drive shaft 44 and is engaged -by a roll 16S on the rear end of the slide 154. While the forepart and heel part portions of the shoe are being operated upon, the crease guide 16 is yieldingly held against the shoe by the spring 146 which allows the crease guide to move back and forth upon the frame 30 according to the action of the shoe upon the crease guide.

Vfhen the rounding cut passes into the inside shank portion of the shoe, the cam 166 advances the side 154, and through the spring 156 swings the cam lever 160 clockwise, the rst result of which is to cause some additional compression in the spring 146' and an increase in the bearing pressure of the crease guide 16 against the shoe. As the swinging movement of the cam lever 160 continues, its lower surface, which is eccentric with respect to the pin 162 `and engages the top of the brake shoe 164, presses the latter rmly enough against the brake slide 13S to lock it against retractive movement in the frame 30. Thus, the crease guide 16', the rear ends of which abut the pin 134 in the brake slide 133, also is prevented from having any retractive movement while the brake slide is locked. lf the above-mentioned setting of the crease guide could result in -a sole edge extension in the inner shank of the shoe less than a predetermined desired minimum, the crease guide will be advanced as will next be described.

For operating the crease guide 116 in this manner, there is provided a `lJ-shaped slide 170 (FIGS. l and 3) having a pair of arms, the forward ends of which are adapted to engage the rear ends of the crease guide 16. Each of the arms of the slide 170 is recessed at 172 freely to receive the pin 134 so as to avoid any interference by the pin 134 to forward movement of the slide 170. For selectively positioning or advancing the slide 170 at both the inside and outside shank portions of the shoe there are provided cams 174, 176 which are mounted upon the drive shaft 44. The cam 174 is engaged by a cam roll 178 which is mounted in a carrier 180 having a shank which is mounted to slide axially thereof in the rear end of the slide 170. Similarly, the cam 176 is engaged by a cam roll 184 which is mounted upon a carrier 186 7 having a shank which is mounted for movement axially thereof in the rear end of the slide 170.

The degree of advance of the crease guide 16 under the control of the cams 174, 176 is selectively adjustable because of provision for individual adjustment of the carriers 180, 1%6 in the slide 170. For this purpose, there project from the carriers 180, 186 lugs 190, 192, respectively, which are engaged by a pair of adjusting screws 194, 196. These screws are threaded into a lug :193 which is integral with the slide 170* and are frictionally held in their settings by a clip 200 which spans the screws and is held thereagainst by a pair of cotter pins 202, the pins being clinched against a plate 204 which is fixed to the lug 198. The setting of each of the carriers 180', 186 may be indicated by gradations on the plate 204 and indices marked on the lugs 190, 192.

The illustrated gaging device, because of its mounting upon the tool head 10, may readily be removed therefrom for purposes of servicing it or to permit the substitution of a different gaging device for it. With these objects in View, the frame 30 is provided with two lugs 206 (FIGS. 1 and 2), each of which has two holes therein for receiving pins 208 which are fixed in lugs which project downwardly from the tool head 10. A detent 210 is mounted to slide vertically in the tool head in front of the rear lug 266 so as to hold the lugs 206 assembled upon the pins 208.

The cams 166, 174, 176, 98 and 40l are assembled upon the shaft 44 from above before the shaft is assembled in the tool head 10, the cams being separated by a plurality of spacers 212. The cams are all held in the desired orientation by a key 214 which is received in keyways formed in the cams, the spacers and the shaft 44. The abovementioned assembly of cams and spacers is supported heightwise by a head 216 on the shaft 44 upon which the heel cam 40 rests.

Because of the variety of styles of shoes which call for widely different sole edge extensions, several forepart cams 42 may be used with the gaging device and provision has been made for the interchangeability of the forepart cams. Each cam v42 is provided with the center hole in the form of an isosceles triangle having a base at 218. Tne cam, at the other two equal sides of the triangle, is adapted to be seated within grooves 220 formed in the head 216 at the same angle to each other as that between the sides of the said triangle. A segmental notch is formed in one side of the head 216 at 222 which permits assembly of the cam 42 'within the grooves 220 and the cam is held seated upon the shaft 44 by a lever 224 which is pivoted at 226 within a vertical slot in the shaft and is held by a spring 22S against the cam at 218.

The use of the illustrated gaging device and its mode of operation throughout a complete sole rounding operation as performed by the above-mentioned Cle-versey machine will now be described. The tool head of the machine is brought into operative relation to the shoe in the vicinity of its heel breast line at the outer side of the shoe. In so doing, the gage members 20, 22 are swung rearwardly about the stud 24 against the resistance of the spring 90 until the mid point of the gage, at the junction of the gage members, becomes seated against the side of the shoe upper. The setting of the gage 18 at this time is determined by the heel cam 40, such setting of the gage also being adjustable by use of the adjusting screw 6h. The crease guide 16 will have been moved rearwardly somewhat by the shoe, against the pressure of the spring 146, from its initial position as determined by the screw 144 and the brake slide 138 is also moved rearwardly by the crease guide to the same extent, the brake shoe 164 being inoperative at this time. The slide 170 also may be moved rearwardly at this time by the crease guide 16 because relieved portions of the cams 174, 176 are now opposite to the rolls 178, 184.

The shoe is moved by the jack so that the rounding cut progresses continuously from the outer heel breast line forwardly of the shoe around the toe, along the inner side of the shoe and around the heel end of the shoe to the starting point. Soon after the rounding cut starts and enters the outside shank portion of the shoe, a rising slope on the cam 176 leading to its operative sector is presented to the roll 164, whereby the slide 17? is caused gradually to advance the crease guide 16 toy take over the guidance of the tool head. At the same time, a falling slope on the cam 40 leading to a relieved sector of it is presented to the roll 32 so that interference by the gage 18 with the gaging action' of the guide 16 is prevented. As the rounding cut closely approaches the outside tip line, a rising slope on the forepart cam 42 leading to its operative sector acts upon the roll 34 gradually to advance the guide 18 into firm engagement with the shoe and, as this occurs, a falling slope on the cam 176 leading to a relieved sector of it is presented to the roll 134, whereby the crease guide 16 is no longer supported against rearward movement and its guiding action temporarily ceases.

As the outer tip line of the shoe is brought within the field of action of the gage 18, the leading gage member 26 yields rearwardly as it rides onto the cap of the shoe upper, the gage then having the condition represented in its lower showing in FIG. 5. At this time, a rising slope on the cam 98 is presented to the roll 96 causing a forward movement to be imparted to the slide 92, an increase in the biasing force applied by the gage members 2t?, 22 to the shoe and the wedge pin 11N) to be operated by the lever 106 and cam 1114 so as to lock the support Si) against movement. The gage members 20, 22 are thus locked against movement relatively to each other but may swing freely bodily about the stud 24, under the control of the links 72, 74 and the cross bar 76, to permit the gage 1S to remain fully seated upon the side of the shoe regardless of changes in its contour. As the rounding cut progresses from a position represented by the section line VlI-VII in FIG. 5 to the tip line of the shoe, the shoe is engaged by the gage 18 at spaced points at each side of the junction of the gage members and as the contour of the shoe now spanned by the gage becomes progressively fiatter the portion of the gage 13 at the junction of the members 20, 22 moves onto the cap of the shoe upper tangentially thereof along a path conforming substantially to the contour of the leading gaging member 2t) shown in FIG. 5 between the section line Vil-VH and the tip line of the shoe. Accordingly, the rounding cut is made along a regular curved contour which does not at all reflect the jog in the shoe upper at the tip line. .At a Vpredetermined time after the part of the gage 18 at the junction of the members 2G, 22 passes fully onto the toe cap, a falling slope on the cam 9S is presented to the roll 96, permitting the cam 104 and slide 92 to move rearwardly and pressure of the lever 106 upon the wedge pin to be removed. Now, the pin 126 on the cam 98 which will have engaged the shoulder 124 on the lever 122 and moved it away from the wedge pin 1%, passes o the end of the lever. Driven by the spring 13G, the lever imparts a blow to the wedge pin 160, driving it out of locking engagement with the support Si? whereby the gage members 2i), 22 are again free to swing relatively to each other about the stud 24 and to be biased against the shoe upper under the inliuence of the spring $6.

As the rounding cut proceeds around the toe end of the shoe the gaging action remains under the control of the gage 18 and the sole edge extension formed upon the shoe will be determined by the shape of the cam 42 and the adjustment of the screw 62.

When the rounding cut closely approaches the inside tip line of the shoe and just before the junction of the gage members 2i), 22 reaches the tip line, another rising slope and operative sector of the cam 93 are presented to the roll 96 and the gage members 2d, 22 are again locked against movement relatively to each other and are held locked until the portion of the gage 1S at the junction of the gaging members is brought gradually into engagement with the side of the shoe upper, somewhat to the rear of the tip line, along a smooth contour which bridges the jog in the upper at the tip line in the same manner as described above with reference to the gaging action at the outside tip line. Now, another falling slope on the cam 98 is presented to the roll 96 and, following the action of the second pin 126 upon the lever 106, the gage members 2t), 22 are again unlocked and again become biased against the side of the shoe under the impulse of the spring 9i); the gaging action of the gage 13 being effected by the portion of it at the junction of the gage members.

As the rounding cut reaches the inner ball line, the crease guide 16 is set in the position it then occupies to insure that the sole edge extension to be formed upon the sole in the inner shank of the shoe will not be less than it is where the crease guide is set. The crease guide is thus set upon the presentation of a rising slope on the cam 166 to the roll 168 which results, first, in some increased pressure being applied by the crease guide to the shoe and then the operation of the cam lever 16d, whereby the brake slide 133 is locked to the frame 30. Accordingly, rearward movement of the crease guide is now prevented because its rear ends are in engagement with the pin 134 carried by the locked brake slide 13S.

If the sole edge extension is so narrow, near the inner ball line where the crease guide 16 is set in the abovedescribed manner, that the corresponding sole edge eX- tension to be formed in the inner shank will be less than the permissible minimum, the crease guide 16 will be advanced by the cam 174 to provide a sole edge extension of at least the permissible minimum. In such a case, a rising slope on the cam 17dis presented to the roll `178 whereby the slide 17% is advanced and, by its engagement with the rear ends of the crease guide 16, causes the necessary advance of the latter to secure the result mentioned above.

=If the crease guide 16 is locked in such a position as to provide a sole edge extension in the inner shank which is satisfactory and equal to or greater than the extension for which the cam 174 is designed, then the high portion of the cam will pass the roll 173 without striking it or at least without advancing the slide 170 enough to impart any advancing movement to the crease guide 16.

It is evident that for any given cam 176 the advanced position of the crease guide 16 can be varied by making an appropriate adjustment of the screw 196.

As the rounding cut emerges from the inside shank portion of the shoe, a rising slope on the heel cam et? is presented to the roll 32 and the gage 13 is advanced into gaging contact with the side of the shoe. At this time, falling slopes on the cams 166 and 174 are presented to the rolls 163 and 178, respectively. Accordingly, as soon as the gaging action is taken over by the gage 18 from the crease guide 16, the brake slide 138 is unlocked as a result of the irnpingement of the pin 152 upon the lever 16d; and the slide 17u is permitted to move freely rearwardly in response to any rearward shoe following movement of the crease guide 16. The rounding cut proceeds under the control of the gage 18 around the heel end of the shoe up to the starting point at the heel breast line; and here the cut stops with the completion of a cycle of operation of the jack.

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

l. In a shoemaking machine in which a tool head and a shoe are relatively moved to effect a transfer of the point of operation of the tool head upon the shoe about its periphery, a gaging device on said tool head for relatively positioning said tool head and shoe, said device comprising gaging members mounted upon said device for movement forwardly and rearwardly thereof, connections between said members for causing them to move equally in opposite directions relatively to each other in responsive to changes in the contour of the portion of the shoe presented to said members, said connections cornprising a plunger, means for biasing said plunger so as to cause said gaging members to be held against the shoe, and means for locking said plunger at a predetermined stage of said cycle whereby said members areprevented from moving with respect to each other.

2. In a shoemaking machine in which a tool head and a shoe are relatively moved to effect a transfer of the point of operation of the tool head upon the shoe about its periphery, a gaging device on said tool head for relatively positioning said tool head and shoe, said gaging device comprising gaging members mounted upon said device for movement bodily and with respect to each other in response to changes in the contour of the portion of the shoe presented to said members, means comprising a spring biased plunger for moving said members relatively to each other toward the shoe whereby said members are continuously held against the shoe, and means for locking and unlocking said plunger before and after, respectively, the point of operation of the tool head upon the shoe passes the tip line of the shoe at each side thereof.

3. In a shoemaking machine in which a tool head and a shoe are relatively moved to transfer the point of operation of the tool head upon the shoe about its periphery during a cycle of operation of the machine, a gaging device on said tool head for relatively positioning said tool head and shoe, said gaging device comprising gaging members mounted on said device to swing bodily and also with respect to each other about a common axis in response to changes in the contour of the shoe, means for biasing said members relatively to each other toward and into engagement with the shoe, and means for locking said members against movement with respect to each other during a portion of said cycle.

4. In a shoemaking machine 'in which a tool 'head and a shoe are relatively moved to effect a transfer of the point of operation of the tool head upon the shoe about its periphery, a gaging device on said tool head for relatively lpositioning said tool head and shoe, said device comprising gaging members mounted upon said device for movement forwardly and rearwardly thereof, connections between said members for causing them to move equally in opposite directions relatively to each other in response to changes in the contour of the portion of the shoe presented to said members, biasing means acting upon said connections yieldingly to hold said members against the shoe, said biasing means comprising a slide and a spring disposed between said slide `and said connections, a lock cooperating with said connections to ylock said members against movement with respect to each other, Vand means operated by said slide for setting said lock at -a predetermined stage of said cycle.

5. In a shoemaking machine in which a tool head and a shoe Iare relatively moved to effect a transfer of the point of operation `of the tool head upon the shoe about its periphery during a cycle of operation of the machine, a rgaging device on said tool head for relatively positioning said tool head and shoe, said device comprising `gaging members mounted for movement .both with respect to each other and also bodily with respect to said device lforwardly and rearwardly thereof, means for biasing said members relatively to each other `against the shoe, connections between said gaging members for causing their movement with respect to each other to occur equally in opposite directions in accordance with changes in the contour `of the portion of the shoe presented thereto, means for locking said members against movement with respect t0 each other during a portion of said cycle, land means for bodily moving said members forwardly and rearwardly of said device to vary the relative position of said tool head and shoe.

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6. In a shoemaking machine in 'which Ia tool head and a shoe are relatively moved to effect a transfer of the point of operation of the tool head upon the shoe about its periphery during a cycle of operation of the machine, a gaging device `on said tool head for relatively positioning said tool head and shoe, said device comprising a slide movable forwardly and rearwardly of said device, gaging members mounted upon said slide for movement forwardly and rearwardly of said device, means for biasing said members against the shoe, connections between said memlbers for causing them to move equally in opposite directions relatively to each other in response to changes in the contour of the portion -of the shoe presented to said members, means for llocking said members lagainst movement with respect to each other during Ia portion of said cycle, and means 4for variably positioning said slide to cont-rol the relative position of said tool head and shoe.

7. In a shoemaking machine in which a tool head and a shoe are relatively moved to transfer the point of operation of the tool head upon the shoe about its periphery once in each cycle of operation of the machine, a gage on said tool head for |relatively positioning said tool head and the shoe, said lgage comprising -a slide mounted for movement forwardly and rearwardly thereof, -gaging members adapted for engagement with the -shoe at spaced points along its periphery, said gaging members being mounted upon said slide for equal and opposite movements toward and away from the shoe, means for biasing said members into `engagement with the shoe, means for locking said members against movement with respect to each other during a portion of said cycle, and means for variably positioning said slide whereby said gaging members are simultaneously set to control the relative position of said tool head and shoe.

8. In a shoemaking machine `in which a tool head and a shoe are relatively moved to transfer the point of operation of the tool head upon the shoe about its periphery once in each cycle of operation of the machine, ra gage on said tool head for relatively positioning said tool head and the shoe, said gage comprising a slide mounted for movement forwardly and rearwardly thereof, gaging members adapted for engagement with the shoe at spaced points along its periphery, said gaging members 4being mounted upon said slide for equal and opposite movements toward and away from the shoe, means for biasing said members into engagement with the shoe, means for locking said members against movement with respect to each other during a portion ofV said cycle, and means for variably positioning said slide to control the relative position of said tool head and shoe, said last-mentioned means y comprising separate cams. and `a cam lfollower for each of said cams, each of said followers being mounted for adjustment upon said slide.

9. In 'a shoernaking machine in which a tool head and a shoe are relatively moved to effect a transfer of the point of operation of the tool head upon the shoe about its periphery during `a cycle of operation of the machine, a gaging device on said tool head for relatively positioning said tool head and shoe, said gaging device comprising a slide carrying gaging members adapted to engage the side of the shoe at a level above its welt crease, a crease guide adapted for engagement with the side `of the shoe at the welt crease, operating mechanism for said iga-ging device comprising a pair of cams for selectively moving said slide `at different stages of said cycle, and a pair of cam followers engageable with said cams and mounted upon Said slide for individual adjustment thereon whereby the movement imparted to the slide by each of said cams is individually adjustable.

Y l0. In a shoernaking machine in which a tool head and a shoe are relatively moved to effect a transfer of the point of `operation of the tool head upon the shoe about its periphery, a `gaging device on Said tool head for relatively positioning said tool head and shoe, said gaging device comprising -a gage and a crease `guide adapted to engage the side of the shoe upper above and within the welt crease of the shoe respectively, said crease guide being mounted to slide freely in said device forwardly and rearwardly thereof, a brake slide yand an operating slide mounted in said device for movement forwardly and rearwardly thereof in abutting relation to said crease guide, brake means cooperating with said brake slide t0 lock it Aagainst movement in said device, and means for setting said brake means and advancing said operating slide in succession whereby said crease guide is first prevented by said brake slide from moving rearwardly and then is advanced toward the shoe by said operating slide.

ll. In a shoemaking machine in which `a tool head and a shoe are relatively moved to cause a transfer of the point -of operation of the tool head upon the shoe about its periphery, -a `gaging device on said tool head Afor relatively positioning said tool head and shoe, said gaging device comprising ya gage and a crease guide adapted t0 engage the side of the shoe upper above and within the welt crease lof the shoe respectively, said crease guide being mounted to slide freely in said device forwardly and rearwardly thereof, a brake slide and an operating slide mounted for movement in said device in abutting relation to said c-rease guide, brake means for locking said brake slide against movement, means yacting upon said brake means in one direction for holding it in its iiioperative position and acting in the opposite direction upon said brake slide to cause said crease guide to be pressed against the shoe, means acting upon said brake means in opposition to said last-mentioned means for setting said brake means whereby the pressure of said crease guide `against the shoe is increased yand said 'brake slide is locked against movement, and means for operating said operating slide to advance said crease guide toward the shoe.

l2. In a shoemaking machinein which a tool head and a shoe are relatively moved to effect a transfer of the point of operation of the tool head upon the shoe about its periphery, a gaging device on said tool head for relatively positioning said tool head and shoe, said gaging device comprising a gage and a crease guide adapted to engage the side of the shoe upper above and within the welt crease of the shoe respectively, said crease guide being mounted to slide freely in said device forwardly `and rearwardly thereof, a brake slide and an operating slide mounted in said device for movement independently of each other into engagement with said crease guide, means for biasing said brake slide forwardly of said device whereby said crease guide is urged against the shoe, stops acting upon saidY Slide to limit its forward and rearward movement, brake means cooperating with said brake slide to lock said lbrake slide against movement in said device, and means for successively operating said brake means land Said operating slide whereby rearward movement of said crease guide is prevented and van advancing movement is imparted to said crease guide.

13. In a shoemaking machine -in which a tool head 'and a shoe lare relatively moved to effect a transfer of the point of loperation of the tool head upon the shoe about its periphery, a gaging device on said tool head for relatively positioning said tool head and shoe, said gaging device comprising a gage and a crease guide adapted to engage the side of the shoe upper above and within the welt crease of the shoe respectively, said crease guide being mounted for movement in said device toward Iand away from the shoe, `a brake slide andan operating slide mounted in said device for movement independently of each other and said crease guide into abutting relation to said crease guide, brake means cooperating with said brake slide to lock it against movement whereby movement of said crease guide away from the shoe is prevented, a spring disposed between said brake means and said slidefor simultaneously holding said brake means in its inoperative position and urging said brake slide Iagainst said crease guide whereby the latter is pressed against the shoe, means acting in opposition to said spring lfor setting said brake means whereby said brake slide is locked against movement, means for driving said operating slide comprising a pair of cams, and a cam follower for each of said cams, each of said followers being mounted upon said operating slide for adjustment independently of the other toward yand away lfrom said cams.

14. In a shoemaking machine in which a tool head and a shoe are relatively moved to transfer the point of operation of the tool head upon the shoe about its periphery `during `a cycle of operation of the machine, a gaging device on said tool head for relatively positioning said tool head and shoe, said gaging device comprising gaging members mounted `for movement bodily with respect to said device and also individually with respect to each other in response to changes in the :contour of the portion of the shoe presented to said members, means for biasing said members relatively t0 each other toward and into engagement with the shoe, and means for locking said members against movement with respect to each other during Ia portion of said cycle.

References Cited in the le of this patent UNITED STATES PATENTS 2,869,157 Lyness Jan. 20, 1959

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