US1576748A - Stock-fitting machine - Google Patents

Description

March 16 1926. 1,576,748

A. E. JOHNSON STOCK FITTING MACHINE led August 4. 1920 2 Sheets-Sheet 1 b .u ..n 1 8N I! -txi--- w QW HHHHF un. *N

March 16,1926. 1,576,748

A. E. JOHNSON STOCK FITTING MACHINE Filed August 4, 1920 2 Sheets-Sheet 2 girmw V w 7 it Patented Mar. 16, 1926.

UNITED STATES PATENT OFFICE.

ALBERT E. JOHNSON, OF BEVERLY, MASSACHUSETTS, ABSIGNOR 1'0 UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

STOCK-FITTING MACHINE.

Application filed August 4, 1920. Serial No. 401,127.

To all whom it may concern:

Be it known that I, ALBERT E. JOHNSON, a citizen of the United States, residin at Beverly, in the county of Essex and tate of Massachusetts, have invented certain new and useful Improvements in Stock-F1tting Machines; and I do hereby declare the following to be a full, clear, and exact descrlption of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

a This invention relates to stock fitting machines and more particularly to such machines for performing some of the operations re uired to fit the marginal portion of boot and shoe soles.

In fitting a sole for assembly with an upper, it is necessary that the marginal 11p which is to form the sewing-rib shall be turned back from its position a ainst the face of the sole; and when the so e is to be reinforced, the lip is raised and set in a position substantially normal to the plane of the sole to permit a proper appllcation of the reinforcing material in the an Is between the lip and the face of the so e. In performing the operations of turn in back the lip and thereafter applying rem orcmg material, it has been foun to be advanta- 80 geous to employ machines of the eneral type shown and described in prior tters Patent of the United States Nos. 1,213 770, Jan. 23, 1917; 1,217,455 and 1,217,456, Feb. 27, 1917; 1,218,561, Mar. e, 1918; and 1,483,-

093, Feb. 12, 1924, all granted on the up 11- cation of the present ap licant, since it as been demonstrated that t is type of machine handles the sole rapidly, accurately and economically.

The object of the present invention 1s to provide certain im rovements in machines of the above name general character'tending to simplify the construction and render the machines more eflicient and reliable in operation.

To the accomplishment of this object and such others as ma hereinafter appear, as will be readily understood by those skilled in the art, the invention comprises the features and combinations of parts hereinafter described and particularly pointed out in the appended c aims.

The invention will be best understood from the description of the preferred embodiment thereof illustrated in the accompanying drawings, in which:

Figure 1 is a view, in front elevation, of the head of the machine; Fig. 2 is a view, in end elevation, of the head of the machine looking from the left in Fig. 1; Fig. 3 is a plan view of the operatin instrumentalities; Fig. 4 is a sectional vlew taken on the line 4-4 of Fig. 3; Fig. 5 is a sectional view taken on the line 5-5 of Fig. 1; and Fig. 6 is a detail perspective view of one of the parts shown in Figs. 1 and 3.

In its illustrated embodiment, the present machine performs a li raising and setting operation upon a don J18 lipped sole. like the machine disclosed in Letters Patent N 0. 1,213,770, dated January 23, 1917, above mentioned. The present machine is provided with two feeding and lip- setting rolls 10 and 12 that respectively enga e the inner and outer lips of a sole. These eed rolls 10 and 12 are r-iven at the same surface s eed and the roll 12 is carried by the main sliaft 14 of the machine. The roll 10 is yieldmgly pressed toward the roll 12 by means of a coil spring 16 that acts on the free end of an arm or carrier 18 which supports the roll 10, and which is pivoted upon a stud 20 carried by the machlne frame. The li s of the sole are raised in advance of their engagement with the feed rolls 10 and 12 by means of lip turnin tools or plows 22 and 24 which respective y act upon the inner and outer lips of a double lipped sole. The sole is held in lposition with its 11 s between the feed rolls y means of a wor -positionmg roll 26 which engages the unlipped face of the sole, as shown in Fig. 4. This roll 26 is mounted onthe free upper end of an arm 28 which is pivoted at 30 to a portion of the frame of the machine, and is urged in a direction to maintain the roll 26 in yielding engagement with the unlipped face of the sole y a torsion spring. 32 (Figs. 1 and 2) connected to the arm 28 by a link 34. The

workositioning roll 26 and the feedroll 10 are a apted to be swung out of operative enga ement with the sole by means of foot trea le mechanism (not shown) at the base of the machine, which is connected to a rock-shaft 36 Fig. 1) journaled in the ma, chine frame, t rough a treadle rod 38 and an arm 40 secured to said rock-shaft. The rock-shaft 36 is operatively connected to the arm 28 to move the roll 26 away from the sole, against the action of the sprin 32, by means of an arm 42 that is secure to the rock-shaft 36 and is provided at its free end with a pivoted block 44 which is engaged by a yoke 46 on the end of an arm 48 integral with the arm 28 which carries the workpositioning roll. The rock-shaft 36 is operatively connected with the supporting arm or carrier 18, upon which the feed roll 10 is mounted, by means of an arm 50 secured.

to the rock-shaft, the end of said arm engaging the lower end of a foot 52 secured to said carrier 18.

The parts above described have the same general construction and mode of operation, exce t as hereinafter described, as in the mac ine disclosed in Letters Patent No. 1,213,770, above mentioned, to which reference may be had for a more detailed description.

In the illustrated machine, the feed or ressure roll 10 which engages the inner ip is cylindrical and of relatively small dlameter so as to enable it to engage the hp at its extreme tip on the most pointed toe sole desired to be operated upon. In order that the feed rolls 10 and 12 may operate to feed the work steadily, it is necessary that they shall rotate in opposite directions at the same peripheral speed. To this end the upper roll 10, which is the smaller of the two, is carried by a counter-shaft 56 (Fig. 1) that is journaled in bearings 58 on the sup orting arm or carrier 18, and the countersliaft is driven from the main shaft 14 through multiplying gearing whereby the rotational speed of the latter shaft is increased the requisite amount to cause the peri heral speed of the roll 10 to equal that of tl ie roll 12. The gearing for drivin the countershaft 56 comprises a pinion 60 Fig. 5), formed at the inner end of the countershaft, and a pair of gears 62 and 64 which are secured upon a short shaft 66 that is suitably journaled in the carrier 18, the

ear 62 meshing with and rotating the pin- 1on 60 and the gear 6'; being driven through an idler pinion 68, that rotates on a stud in the carrier 18, and a gear which is secured to the main shaft 14.

In order to permit the supporting arm 18 to be swung upward to raise the upper feed roll 10, without interfering with the driving connections for the countershaft 56, the idler pinion 68 and the gear 70 are located directly beneath the pivot stud 20 about which said supporting arm is swung. With this arran ement, as the supporting arm 18 is raised, tire upward movement of the idler pinion 68 away from the gear 70 is negligible and consequentl said pinion and gear will be maintained in driven engagement Whatever the angular position of the supporting arm 18.

The upper roll 10, as shown, is removably secured to the countershaft, the inner end of said roll bein for this purpose enlarged in diameter an provided with a socket which is screw-threaded to receive the correspondingly threaded forward end of the countershaft. To assist in assembling the roll 10 upon the countershaft or removing it therefrom, the enlarged portion of said roll is provided with a plurality of radial holes 72 which permit the use of a spanner wrench for turning the roll upon the shaft, The longitudinal location of the roll 10 upon the countershaft is positively determined by means of an annular shoulder 74 (Fig. i on said shaft which is adapted to bev engaged by the large end of a roll. Longitudinal movement of the countcrshaft 56 in its bearings upon its supporting arm 18 is prevented by means of a collar 76 which is secured to the shaft b means of a set-screw 78, the opposite en s of the collar engaging respectively with the ad'acent side of one of the bearings 58 and with a shoulder 80 on said supporting arm. This construction permits adjustment of the countershaft 56 longitudinally in its hearings to correctly position the upper roll 10 relatively to the lower roll 12, the face or width of the pinion 60 being such as to permit it to slide relatively to pinion 62.

In order to prevent the lip setting rolls from engaging each other when the machine is running idle, the upper roll 10 is normally maintained at a definite limit of approach with respect to the lower roll 12 by means of the engagement of the lower end of a stop screw 84 (Fig. 1) with a fixed portion 86 of the machine frame. To better adapt the rolls to operate upon lips of varying thicknesses, the limit of approach of the upper roll may be varied in accordance with the thickness of the lip to be operated upon by turning the adjusting screw 84.

The upper lip setting-roll illustrated in Fig; 1 is of a diameter which has been found to be best adapted for extreme pointed toe soles such as are often employed in womens shoes. In order to adapt the machine for use in connection with soles having somewhat less sharply pointed toes such as are more often used in mens shoes, it is desirableto employ an upper roll of somewhat greater diameter although still considerably smaller than the lower roll. Obviously a change in the diameter of the upper roll requires a corresponding change in the driving mechanism in order that the peri heral speed of the two feed and pressure rol may be maintained equal. In order to provide for a convenient and rapid substitution of the upper rolls in accordance with the style of work being operated upon, the present invention contemplates the provision of two or more interchangeable supporting arms or carriers 18, each carrying a countershaft 56 havin attached thereto a li setting roll 10 of a different diameter. en a li setting roll of larger diameter than that s own in Fig. 1 is em loyed, the countershaft on which said roil is secured must necessarily be supported at a higher elevation in the machine than that of the countershaft shown in Fig. 1. Accordin ly the carrier for an upper lip setting rol which is of reater diameter than the rolls shown in ig. 1, will have the countershaft bearin s 58 so modified as to support said shaft at t e requisite elevation, the countershaft being extended and provided with gear teet adapted to be engaged directly by the teeth of t e gear on the main shaft 14 forming a driving connection like that disclosed in said Letters Patent No. 1,213,770. In order to permit the convenient interchange of the carriers 18, the portion 88 of the machine frame which extends transversely above the free end of the carrier has been spaced a greater distance above said carrier than shown in the patented machines hereinbefore referred to, thus affording ample clearance for said end of the carrier with either typehof lip setting roll mounted thereon.

e plow 22 is mounted on a bracket 90 which is secured to the free end of the su porting arm or carrier 18. This plow is adapted to be adjusted in correct relation to the upper lip setting roll 10 by means of a cap screw 92 which extends through an elongated slot 94 in a horizontal portion of the shank of the plow and is threaded into a horizontal portion of the bracket 90. The plow is prevented from an ular displacement by means of a in 96 w ich rises from the bracket and pro ects into the slot .94 in the shank of the plow. The low 24 is carried by a bracket 98 which is secured to a fixed part of the machine frame. The plow 24 is adjustable relative to the roll 12 in a manner similar to that of the plow 22, it bei mounted for this purpose on the brac et 98 in the same manner in which the plow 22 is mounted in the bracket 90. The shank of the plow 22 is laterally oflset in a direction away from the work to ive s ace for the passage of the raised portion 0 the lip when operating upon the last half of the lip after the o eration on the first half has been complete and after the sole has been swung at the toe as disclosed and claimed in Letters Patent No. 1,483,093, above men tioned. The machine is provided with a lost motion connection between the treadle lever arm 42 and the positioning roll lever arm 48 formed by making the block 44 of less width than the space between the arms of the yoke 46, as shown in Fig. 1, permitting a lifting of the upper lip setting roll 10 and its plow 22 without retracting the positioning roll 26, for a purpose which is explained in the atent just referred to where the said constr" etien is claimed.

To assist in feeding the sole the positioning roll 26, in the construction shown, is driven positively at all times during the operation of the machine. To this end the roll is secured to a vertical shaft 100 (Fig. 4) which is journaled in a bearing 102 at the free end of the arm 28, and has secured thereto, below the bearing 102, a bevel gear 104 which meshes with and is rotated by a bevel gear 106. The shaft 100 is maintained against longitudinal movement in the bearing 102 by means of the ear 104 and an annular shoulder 108 whic engage respectively the lower and upper ends of the bearing. The bevel gear 106 is secured to one end of a horizontal shaft 110 which is journaled in a bearing 112 in the arm 28 and has formed upon its opposite end a spur car 114. The shaft 110 is driven from t e main shaft 14 through an idle spur gear 116 which is rotatably mounted upon the arm 28 and meshes wlth the gear 114 and with gear teeth 118 formed on the hub of the lower feed roll 12. To permit the teeth of the idle gear 116 to remain in mesh with the teeth 118 on the hub of the feed roll 12, when the arm 28 is swung outwardly to retract the work-positioning roll from engagement with the sole, the pivot 30 upon which said arm is mounted, instead of being located as in the patented machines hereinbefore referred to, is in the present machine located nearly beneath the idle gear 116, as shown in Fig. 1, and the teeth 118 are horizontally elongated. This construction permits the idle gear to move in a substantially horizontal path as the arm 28 swings outwardly, inasmuch as the pitch line of the spur gears 116 and 12, 118 is approximately tangent to the arc in which the arm swings and consequently the teeth of said gear 116 remain in mesh with the teeth 118 whatever the position of the work-positioning roll. It will be seen that the above de scribed drivin connections for the workpositioning ro are rugged in construction and serve to insure a positive drive of said roll at all times. The inward movement of the arm 28 under the influence of the spring 32 is limited by means of a sto screw 120 (Fig. 1) carried by said arm and arranged to engage a fixed part of the frame. The stop screw 120 may be secured in adjusted position by means of a lock-nut 122 which is pivoted with radial holes to rmit it to be engaged by a spanner wrench or the purpose 0 turning it. Both lip setting rolls 10 and 12 are knurled on their peripheral faces, as indicated in Figs. 1. and 4, said faces being thereby roughened sufliciently to effectively feed the work under ordinary conditions. Care is taken,

however, to avoid roughening said faces sufficiently to render them liable to tear the stock in case the feed of the sole is for any reason temporarily arrested. It has been found that when the stock is soft and spongy these rolls may have a tendency to slip and it is therefore desirable to design the feed mechanism so that all kinds of stock may successfully be fed through the machine. Consequently the feather engaging end face of the lower roll 12 is provided with short radial teeth 126 (Fig. 4) which bite into the feather of the insole and obtain a feeding grip thereon whatever the nature of the stock, as disclosed and claimed in Letters Patent No. 1,483,093 hereinbefore referred to.

In order to compensate for slight inaccuracies in manufacture result-in in slight variations in the vertical position of the work positioning roll as mounted in the machines of the patents hereinbefore referred to, and to properly position the roll for use in performing different operations, provision is made for adjusting said roll yer tically with respect to its supporting arm 28. To this end the vertical shaft 100 is split at its upper end, as indicated at 130 in Fig. 4, and is screw-threaded internally at 132 for receiving a clamping screw 134. The s lit end of the shaft is beveled in ternal y to form a conical recess which is adapted to be engaged by a conical head 136 formed on the clamping screw 134. As the clamping screw 134 is tightened, the split upper ends of the shaft 100' are spread by the movement of the conical head 136 and the work-positioning roll 26 is thus held immovable on said shaft. By loosening the clamping screw 134 the work-positioning roll may be adjusted vertically across the bite of the feed rolls to obtain the requisite relation between said roll and the work. This construction forms a valuable feature for any machine which employs a workpositioning roll of the character illustrated. having a bulging, peripheral face, regardless of the particular operation to be performed on the sole by the machine, for by reason of the adjustment the bulge, or pressure ap plying portion, of the roll can be located to apply the pressure where required for the operation under way thus avoiding an interchange of rolls.

A feather guide 140 is mounted upon the arm 28 which carries the work-positioning roll 26 and this guide cooperates with the plows 22 and 24 to properly guide the feather as the lip is fed between the feed rolls. The guide 140 is provided with a sole engaging face which is shaped as best shown in Fig. 6, having a portion 142 which is disposed in a vertical plane and is inclined outwardly from the work toward the front of the machine, and a portion 144 which is disposed in a vertical plane parallel to the plane of the work and which serves to en- 'age and guide the feather as the work is ed. The corner portion 146, above the guidin portion 144, is bent backwardly away from the work, as shown in Figs. 3 and 4, to avoid the ossibility of the sole being cut or marred that portion of the feather guide as the sole is swung around the toe. The guide 140 is adjustable horizontally toward and from the pressure rolls to accommodate stock of varying thicknesses. To this end the guide 140 is provided with a shank terminating in a horizontal portion 148 which is secured to the arm 28 by means of a cap screw 150, Figs. 1 and 3, which extends through a slot 152 in the horizontal portion of the shank and is threaded into the arm 28.

The nature and scope of the invention having been indicated and a machine embod ing the several features of the invention in t eir preferred form having been specifically described, what is claimed as new, 1s:

1. A machine for operating on lipped soles having, in combination, a shaft, a feed roll mounted thereon to bear against one face of the lip, a second feed roll for engaging the opposite face of the lip, a work positioning roll to bear against the unlipped side of the sole, a support therefor, means for moving said support and work-positioning roll toward and from said feed rolls, and gearing including a driving gear rigidly secured to said shaft and a driven gear carried by said support and movable bodily therewith for positively driving the Workpositioning roll, one of said gears having elongated teeth so that said gears will remain in mesh whatever the position of said support and its roll.

2. A machine for operating on lipped soles having, in combination, a shaft, a feed roll mounted thereon to bear on one side of the lip, an oscillatory arm, a work-positioning roll carried by said arm to bear on the unlipped side of the sole, means for oscillating said arm to move the work-positioning roll about an axis toward or from said feed roll, and means for driving the workpositioning roll comprising a pair of spur gears, one of said gears being carried by said arm and the other by said shaft and the pitch line of said gears being approximately tangent to the arc in which said arm oscillates whereby the gears remain in mesh in substantially different positions of the arm.

3. A machine for operating upon lipped soles having, in combination, a frame, a main shaft rotatable in hearings in said frame, a feed roll on said shaft to bear on one face of the lip, a driving gear rigidly secured to said shaft adjacent to said feed roll and both the gear and the roll being outside of said bearings an oscillatory arm, a second shaft journaled in said arm, a Workpositioning roll carried bv the second shaft to bear on the unlipped side of the sole, means for oscillating said arm to move the work-positioning roll toward or from the feed roll, and means for driving the work positioning roll comprising a third shaft journaled in said arm and a driven gear on said shaft meshing directly with said driving gear.

4. A stock fitting machine having, in combination, means for supporting and feeding a lipped sole comprising a pair of roles for engaging the opposite faces of the lip, means for pressing one of the rolls yieldingly toward the other, and a work-positioning roll having a bulging, peripheral face for engaging the unlipped side of the sole opposite the bite of said pair of rolls, driving mechanism for said work-positioning roll .noluding a shaft to which said roll is ad- ,ustably secured and gearing connected therewith, and means whereby said roll may be adjusted along its shaft and across the bite of said pair of rolls without afiiecting said driving mechanism.

5. A stock fitting machine having, in com bination, means for supporting and feeding a lipped sole comprising a pair of rolls for engaging the opposite faces of the lip, one of said rolls having an end face for engaging and feeding the feather, and a work-positioning roll having a peripheral face for engaging the unlipped side of the sole; and an expansible shaft to which the work-positioning roll may be rigidly secured with provision for adjustment of the roll along the shaft and diametrically of and substantially parallel to the end face of said feather feeding roll.

6. A stock fitting machine having, in combination, means for supporting and feeding a lipped sole comprising a pair of rolls rotatable about parallel axes and engaging the opposite sides of the lip, mechanism for retating said rolls at the same peripheral speed, and a work-positioning roll at the unlipped side of the sole having a bulging peripheral face opposite the bite of said pair of rolls; a shaft for said work-positioning roll the axis of which extends diametrically across the end faces of said lip engaging rolls; driving gearing for said shaft; and means across the bite of said pair of rolls whereby the position of said roll on its shaft may be shifted to cause its bulge to bear on the sole at a predetermined point relative to the end faces of said pair of rolls.

7. A machine for operating upon li ped soles having, in combination a pair of lip raising tools, a pair of feed rolls for engaging the opposite faces of the lip to feed the sole and set the lip, and a feather guide (140) in advance of the feed rolls and bearing against the unlipped face of the sole for assisting the operator in guiding the Work, said guide having its upper rear portion (146) offset laterally away from the path of feed of the sole to prevent it from injuring the sole as the latter is swung around the toe.

ALBERT E. JOHNSON.

outside of said bearings an oscillatory arm, a second shaft journaled in said arm, a work positioning roll carried by the second shaft to bear on the unlipped side of the sole, means for oscillating said arm to move the work-positioning roll toward or from the feed roll, and means for driving the workpositioning roll comprising a third shaft journaled in said. arm and a driven gear on said shaft meshing directly with said driving gear.

4. A stock fitting machine having, in combination, means for supporting and feeding a lipped sole comprising a pair of roles for engaging the opposite faces of the lip, means for pressing one of the rolls yieldingly toward the other, and a work-positioning roll having a bulging, peripheral face for en gaging the unlipped side of the sole opposite the bite of said pair of rolls, driving mechanism for said work-positioning roll including a shaft to which said roll is ad- ,ustably secured and gearing connected therewith, and means whereby said roll may be adjusted along its shaft and across the bite of said pair of rolls without affecting said driving mechanism.

5. A stock fitting machine having, in combination, means for supporting and feeding a lipped sole comprising a pair of rolls for engaging the opposite faces of the lip, one of said rolls having an end face for engaging and feeding the feather, and a work-positioning roll having a peripheral face for engaging the unlipped side of the sole; and an expansible shaft to which the work-position- Certificate of Correction.

ing roll may be rigidly secured with pro vision for adjustment of the roll along the shaft and diametrically of and substantially parallel to the end face of said feather feed ing roll.

6. A stock fitting machine having, in combination, means for supporting and feeding a lipped sole comprising a pair of rolls rotatable about parallel axes and engaging the opposite sides of the lip, mechanism for rotating said rolls at the same peripheral speed, and a work-positioning roll at the unlipped side of the sole having a bulging peripheral face opposite the bite of said pair of rolls; a shaft for said work-positioning roll the axis of which extends diametrically across the end faces of said lip engaging rolls; driving gearing for said shaft; and means across the bite of said pair of rolls whereby the position of said roll on its shaft may be shifted to cause its bulge to bear on the sole at a predetermined point relative to the end faces of said pair of rolls.

7. A machine for operating upon li ped soles having, in combination a pair of lip raising tools, a pair of feed rolls for engaging the opposite faces of the lip to feed the sole and set the lip, and a feather guide (140) in advance of the feed rolls and bearing against the unlipped face of the sole for assisting the operator in guiding the work, said guide having its upper rear portion (146) offset laterally away from the path of feed of the sole to prevent it from injuring the sole as the latter is swung around the toe.

ALBERT E. JOHNSON.

It is hereby certified that in Letters Patent No. 1,576,1748, granted March 16, 1926, upon the application of Albert E. Johnson, of Beverly, Massachusetts, for an improvement in Stock-Fitting Machines, an error app ears in the printed specification requiring correction as follows: Page 5, line 55, c-llaim 6, strike out the words across the bite of said pair of rolls and insert the'sa me to follow after the word shifted in line 57, same claim; and that the said Letters Patent should be read With this correction therein that the same may conform to the record of the case in the Patent Ofiioe.

Signed and sealed this 22d day of June, A. D. 1926.

[SEAL] M. J. MOORE, Acting Commissioner of Patents.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,576,748, granted lMarch 16, 1926, upon the application of Albert E. J ohnson, of Beverly, Massachusetts, for an improvement in Stock-Fitting Machines, an error appears in the printed specification requirin correction as follows: Page 5, line 55, claim 6, strike out the Words across the bite of said. pair of rolls and insert the same to follow after the word shifted in line 57, same claim; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiioe.

Signed and sealed this 22d day of June, A. D. 1926.

[SEAL] M. J. MOORE,

Acting Coflwm'ssioner of Patents.

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