US1139025A - Heel-seat rounding and randing mechanism. - Google Patents

Description

L. G. FREEMAN.

HEEL SEAT ROUNDING AND RANUING MECHANISM.

APPLICATION EILED AUG. 5 191|.

Patented May 1l, 1915.

2 SHEETS-SHEET l.

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frv7/7v0v: Z 0207,29 e mand THE MORRIS PETERS C0.. PHOTULITHO., WASHINGTON. D. C.

L. G. FREEMAN.

HEEL SEAT ROUNDING AND RANDING MEcHANlsM.

APPLICATION FILED MIG. 5| 19H.

Patented May 11, 1915.

2 SHEETS-SHEET 2.

l 1---1 l l THE NORRIS PETERS C0., FHOTo-LITHO.. WASHINGIDN. D. C.

LOUIS Gr. FREEMAN, OF CINCINNATI, OHIO.

VI-IEllL-SILA'.1 ROUNDING AND .RANDING MECHANISM.

Application filed August 5, 1911.

T0 all whom t may concern Be it known that I, LOUIS G. FREEMAN, a 'citizen of the United States, anda resident of Cincinnati, county of Hamilton, and State of Ohio, have invented an Improvement in Heel-Seat Rounding and Randing Mechanisms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to a mechanism for randing or skiving the peripheral top portion of shoe soles around the heel seat, this mechanism being preferably arrcnged in cooperative relation with mechanism for rounding the heel seats of shoe soles of the type shown in the patent to Krewson, #933,651, September 7, 1909. A

The invention further relates to certain improvements in such heel seat rounding mechanism.

In the manufacture of shoes, one of the principal items of 'expense is sole leather, and one of the ways of saving in many factories is to avoid skiving the sole so as to keep the same as heavy as possible. It therefore frequently happens that the heel seat end of the sole, which is usually rounded off after it has been nailed to the inner sole, has a rough surface, with a fleshy, shreddy appearance, and as this is to lie next the upper of the shoe and be somewhat exposed, it is often necessary that the peripheral portion of this `upper surface be randed or skived off, in order that the shoe may present a finished appearance. This, as heretofore carried out before the heel A trimming and after the heel is attached, has

required a special operation which it is not always easy to carry out eectually.

The present invention in the preferred embodiment to be set forth, provides a randing attachment adapted to rand off the peripheral top portion of the heel seat in any. desired manner at the same time that this portion of the sole is rounded and cut down to shape by the heel seat rounding cutter, thus doing away with an .extra operation for the randing, and enabling this to be effected without additional labor and in definite relation to the heel seat periphery as rounded off by the rounding cutter.

Specification of Letters Patent.

Patented May 11, 1915.

serial No. 642,520.

The invention further provides means for adjusting the randing knife or cutter in the various directions required for different varieties of work, and also has to do with certain improvements more particularly connected with the heel seat rounding mechanism. Y

The invention will be more fully understood from the following detailed description, taken in connection with the accompanying drawings, andwill be thereafter pointed out in the appended claims. y

Referring to the drawings, Figure 1 is a side elevation, partly broken away in section, of one form of the improved apparatus with the support therefor broken away: Fig. 2 is a plan view thereof; Fig. 3 is a detail front end view of the operative parts, the support for the work 'rest' being shown in section; Fig. 4 is a fragmentary longitud? nal vertical section through the operative parts, the work operated on being shown in dotted lines; Fig. 5 is a detail cross section through the randing tool support; and Fig. 6 is a side elevation, and Fig. 7 is a plan view, of a modified form of the invention, the support and the driving gearing being broken away, and with certain details omitted so that the distinctive featuresr appear more clearly.

10 indicates a suitable support for thc mechanism which may be the top of an upstanding column. This support has fixed thereon a rigid main frame designated 11 inA which is journaled a shaft 12 driven from any suitable source, such as a countershaft at the base of the column (not shown). This shaft 12 has fixed thereon a 'worm 13 in driving engagement with a worm wheel 14 fixed on a shaft 15. The shaft 15 is journaled in the main frame 11 for a limited swinging movement, by having its rear end fitted in a bearing sleeve 16 pivoted at 17 just to the rear of the worm wheel 14, and having its forward end fitted in a box sleeve 18 which is controlled as hereinafter eX- plained. The front end of shaft 15 has fixed thereon a feed wheel 19, composed of two spaced apart portions with a guiding groove.

or slot 2() for the rounding knife therebetween. This feed wheel preferably has its periphery serrated, as shown, and coperates ing a smooth periphery and provided with a stem 24 fitting in a socket at the end of a shaft to which the inner portion of wheel 21 is fixed. This shaft is suitably j ournaled in bearings in an arm 26 pivoted at 27 to the main frame. The shaft 25, is driven by spur gear connections 28 from shaft 15, these gears being soproportioned that the peripheral speed of feed' wheels 19 and 21 will be the same, z'. e., the upper feed wheel 21 being shown as smaller than the lower feed wheel 19 the shaft 25 isv geared up to be driven at a correspondingly higher rate than shaft 15.

The heel seat rounding knife. consists in a thin blade 29 vertically upst-anding from a horizontal plate or bar 30 integral therewith fixedly supported at the front of the main frame 11 and having an adjustable backing at one end against the head of a screw bolt 3.1 threaded onto the frame, and at its other end adjustably held by a plate 32 having a bent-in rear extremity 33y to press againstthe frame, and a forward projection 34 held in engagement with a shouldered off end 35 of thev bar 30, as shown, by a screw bolt 36 passing therethrough and threaded onto the mainframe. The cutting edge 0f the rounding knife 29 is at the right in Fig. 3, and as seen at 37, is substantially in vertical alinement with the axes of the upper and lower feed wheels, this. arrangement being especially advantageous. for conveniently turning the shoe around to the different angles as required for rounding off the sole at the heel seat portion. Thek swinging arm 26 is made relatively long as compared with that shownk in the above referred to patent, and the pivot 27', thereof is located as near as practicable to the worm wheel 14. Like-r wise the pivot 17 of the rear bearing sleeve of the shaft 15 is located just at the rear of the worm wheel drive, this arrangement permitting the necessary swinging vertical adjustments of the upper and lower feed wheels to accommodate different thicknesses of leather without any material angular displacement thereof, owing to the relatively long radii about which they swing'. Thus the guiding slots 20 and 22 for the rounding knife can be quite closely fitted to said knife without danger of any binding action upon the sides of the slots, as would be the case if, in the normal adjustments of these feed wheels, they were moved angularly to any considerable degree.

Suitable means is provided for yield'ingly drawing or pressing the upper vand lower feed wheels towardl each other to grip the i leather between them, and, as shown, this means consists in a stout coil spring 38 housed in a protecting cup casing 39 which has straps 40 projecting upward at either side, these straps being pivotally secured at 41 to the swinging arm 2G. The spring 38 presses at its upper end against the forward sleeve box bearing 18 of the shaft 15, being fitted over a lateral projection 42 thereon. The tension of spring 38 may be regulated as desired by an adjusting screw bolt 43, threaded through the bottom of the cup backing 39 which presses upward a follower 44 constituting an immediate backing for the bottom of' a spring. Usually, and as shown. in Fig. 3, the lower feed wheel 19 extends about 3/16 above the work rest as seen at 45, this being its highest position to feed light stock, and the upper feed wheel is 1/16A above at its lowest position. The position of these two feed wheels relative to the top of the work rest, and as these are drawn together by the spring 38, is determined by a screw bolt 46 threaded through the swinging arm 26 and which rests upon a portion of the main frame, along with a threaded stud 47 fixed to the bearingV block 18, and having a wing nut 48 threaded thereon to engage with a transverse plate 49v xed to the main frame. Thus the adjustment of screw bolt determines the extent to which the arm 26 withv the upper feed wheel 21 can be drawn downward by the spring 38, while the adjustment of the wing nut 48 determines the extent to which bearing box 18 of the lower shaft 15, and hence the lower feed wheel 19 can be pressed upward by the spring. The work support preferably has a downwardly sloping angularly adjustable portion projecting outward in front of the feed wheels as seen at 50 in like manner as in the patent mentioned.

They means for effecting the randing of the upper peripheral surface of the heel seat in the preferred embodiment shown consists in a knife 51 mounted so as to act upon the top surface of the leather at the same time that the. knife 29 is rounding off the heel to shape. As shown, this knife 51 is of arcuate form and is adjustably mounted in a holder 52 securedto a lateral lug 53 of arm 28. The arcuate knife 51 is gripped in its holder 52 as shown, by means of a bolt 54, and by loosening this bolt the knife may be slid through its circular clamping slot to bring it to the lateral cutting position required. As a means for vertically adjusting the cutting end of the knife, its holderarm 55, which is socketed inthe lateral off-set 53, is generally circular in forni but has a flat top as seen at 56 andthis top is engageable at either side by screw bolts 57j, 58 whichmay be relatively adjusted to turn the knife holder as required soV that the forward operative edge of the knife 51 will be in the desired position of vertical adjustment.

To avoid scuifing and marring of the shoe uppers in the operation of the machine, it is necessary that means be provided to protect the upper leather from the end of the Lipper feed roll and from the knife. Further, especially in the case of patent leather uppers, the rubbingeof the finished surface against even a stationary metallic guard would be apt to mar or scuff the finish to an injurious extent. To avoid such injury, the invention provides a pad 59 of soft, absorbent material, as felt, mounted in a holder 60 pivoted at 61 to the swinging arm 26, and havinga lateral lug 62 adapted to rest upon the top of said arm when this device is swung down into operative position, as seen in full lines in Fig. l and in Fig. 2. In practice the pad 59 is filled with oil and swung from the dotted line inoperative position of Fig. l down into operative position alongside of the feed wheel at the side from which the shoe is moved up thereto, as shown in Fig. 3, so that as the shoe is moved along past the end of the feed wheel in the heel rounding operation, it is iirst oiled by the felt pad so as to slide easily past the end of the feed wheel guard without injurious rubbing or scuffing.

In order to properly rand or skive off the top of the heel seat the proper distance back of the edge as trimmed off by the heel trimmer, it is necessary for the randing knife to be extended out beyond the end ofv the feed roll some little distance, as indicated at G3, see Fig. 4. A guard '64 of disk form over the end of the upper feed roll has a securing portion extending laterally backward with an elongated slot through which is passed a screw 65 to clamp the guard to the swinging arm 26. This guard has its disk end cut away at the bottom as seen at 66 to leave room for the operative edge of the randing knife 51, and a rounded lateral projection 67 extends outward from the bottom of the guard to further protect the adjacent upper leather from the outwardly projected randing knife in the manner clearly indicated in Fig. 4c. The guard 64 may be adjusted outward to the particular extent required in any given case by the elongated slot through which the screw 65 passes, and then securely clamped by setting up this screw. The oiling pad 59 is especially useful in working on patent vleather shoes, and when not required may be instantly swung up to inoperative position and out of the way, as indicated in dotted lines in Fig. 5. Any desired form of randing knife can be substituted for the particular knife 5l which, as illustrated, is adapted to produce a straight skive. By the selection of a proper knife, the randing can be either a straight skive, as shown, or at any angle, and by the vertical adjustment of the knife through the screws 57, 58, it can be made as deep as required. The arcuate adjustment of the knife in its holder enables its operative edge to be securely held in the best position for cooperation with the heel rounding knife for various kinds of leather, while the endwise adjustment outward beyond the feed wheels enables the randing to be carried as far in from the edge as desired.

By means of the nut 4S and the screw bolt 4G the positions and relation of the two feed wheels can be regulated with precision for best results with different thicknesses of soles, and the randing knife, being carried at the forward end of arm 26 along with the upper feed roll, is always properly positioned for action on the top of the sole without regard to the thickness thereof. Thus, in rounding extra heavy stock the nut 4:8 is operated to draw the lower feed roll to its lower limit of adjustment so that it projects only enough above the table to engage the stock for feeding. In this case the upper feed roll has a considerable yield upward to permit the ready feeding in of the stock, the screw bolt i6 being set to regulate the extent to which the upper feed roll can be drawn down by the spring, so that the serrated peripheries of the feed rolls bite into the material just enough for an effective feed. The tension of spring 38, which determines the pressure of the feed rolls upon the work, can be instantly regulated to a nicety by an adjustment of the screw bolt 43, this screw bolt, as well as the separate adjustments for controlling the limiting positions of the top and bottom feed rolls, being conveniently located near the front of the machine so as to be easily accessible.

The randing of the peripheral top surface of the heel seat can thus be accomplished along with the rounding operation and the extent and character of this randing can be varied and determined with exactness for any particular'nature of work and always in definite relation to the edge as trimmed off by the rounding tool. Since the randing attachment is carried by the swinging arm in which the top feed roll is mounted, the randing knife partakes of any self-adjusting movements of the upper feed roll, and hence maintains its unvarying relation to the top surface of the material, always taking off the same amount of stock when once set in adjusted position, while the vertical and longitudinal adjustments of the randing knife enable the depth and width of the cut made by it to be varied as required. Since both the upper and lower feed wheels are at the ends of shafts which swing on a long radius, the adjustments of the wheels for varying thicknesses of leather will cant them but little angularly, and hence slots 20, 22 for the rounding knife can be made narrow enough so as to constitute an effective guide for steadying and supporting this knife, and

in these swinging movements of the feed rolls the driving gear connections are but slightly varied for the same reason. The guard 6st over the outer end of the upper feed roll protects the upper leather from scufling and marring, while the oiler pad 59 when filled with a suitable oil may instantly be swung down so as to effect a preliminary oiling of the surface of highly finished leathers, as patent leather, so as to further aid in preventing any injurious effect from contact of the leather with the metallic parts.

In the form shown in Figs. 6 and 7, the randing knife 51, instead of being mounted on the lateral lug 53 integral with the swinging arm 26, is carried at the end of a separate swinging arm 68 mounted alongside the swinging arm 26 which carries the upper feed roll, these two arms being both mounted to swing about a common pivot 27. When desired, this arm 68 can be rigidly connected with the arm 26 by means of a bolt pin 69 fitted to a hole through the arm and adapted to thread into the arm 26, as seen at 70. lVhen so connected, the two arms swing as one, and the randing knife has a vertically controlled self-adjusting` movement along with the upper feeding roll as determined by variations in thickness of the seats being operated on. Vhen so connected, the device operates in substantially the same way in all respects as the first form described. Upon removal of the bolt pin 69, however, the arm 68 carrying the randing knife may be adjustably held in fixed relation to the main frame by means of a screw bolt 7l having an eye 72 at its lower end through which a bolt 73 fitted in the main frame may be passed.y This screw bolt 7l has suitable means forholding the arm 68 in the desired position of vertical adjustment relative to the main frame and the feeding aperture, this means being shown as consisting in a knurled nut 74 threaded 011 said screw bolt andy fitted to operate in ar recess 75 formed in the top of arm 68 and in. a block 76 xed thereto and extending over said nut. lVashers 77 with concave seats are provided so that the adjustment effected by this nut is not affected by the small c ngular tilting of the arm. The parts may be rigidly clamped in adjusted position by a wing nut 78 threaded on the bolt 71 and engaging the top of block 7 6. By this construction, the randing knife 51 may be exactly adjusted as required so as to leave the periphery of all seats of a lot to be operated on of a uniform thickness which may be quickly adjusted for different lots as desired. All that is necessary to change the device so as to operate in the manner first described is to remove the bolt 73 passing through the eye 72 and insert the bolt pin 69,V so that for practical purposes the apparatus is instantly available for use in either manner as found preferable in any particular case.

Ihile the improved randing device is especially adapted for coperation with the heel seat rounding mechanism, as shown, it is also useful in various relations other than those shown, and I therefore do not desire to be limited to the particular organizations of parts as shown, or in any other way except as set forth in the kappended claims. The particular structural embodiment of the various elements shown is likewise susceptible of considerable variation in practice, and is hence to be understood as illustrative and not restrictive, except as limited in the claims..

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

1. An apparatus of the kind described, comprising a swinging yieldably mounted feedroll for feeding the stock, and a randing knife adjustably mounted laterally adjacent said feed roll for reducing the top surface of the stock adjacent its periphery and substantially parallel with the bottom surface, said knife being movably mounted and connected to be controlled by said yieldable feed roll.

2. An apparatus of the kind described, comprising a pair of upper and a pair of lower feeding rolls for gripping and feeding the stock, means for yieldingly pressing said pairs of rolls toward each other, and a randing knife mounted adjacent said feeding and gripping rolls, said knife being adapted to act on the top surface of the stock in the same horizontal plane with said gripping and feeding rolls, substantially parallel with the bottom surface of the stock and mounted for lateral adjustment transverse of the direction of feed, and for longitudinal adjustment along the line of feed.

3. An apparatus of the kind described, comprising a pair of feed rolls with means for yieldably drawing the same toward each other to grip the work between them, a heel seat rounding cutter having its operative edge extending substantially in the line of the axes of said rolls, and a randing tool adjustably mounted so that its operative edge may be brought adjacent the work engaging portion of the feed rolls.

4L. An apparatus of the kind described, comprising a pair of coacting feeding rolls, a heel seat rounding knife, and a randing knife mounted in operative relation thereto, the randing knife extending outward beyond the rolls, and a guard having a por` tion extending outward and arranged to` protect the upper leather from scufling and Contact with said randing knife.

5. An apparatus of the kind described, comprising means for feeding the work, a

randing knife having its operative edge eX- tending adjacent the work gripping portion of said feeding means, a guard for the upper leather, and means for oiling the upper leather as it is fed to the machine.

6. An apparatus of the kind described, comprising a pair of coacting feed rolls, a heel seat rounding knife, and a randing knife mounted in operative position adjacent thereto, an adjustable guard arranged to prevent scuffing of the upper leather, and an oiling device arranged to be moved into position to oil the upper leather in advance of the guard as the shoe is fed to the machine. Y j j 7. An apparatus of the kind described,

comprising a pair of coacting feed rolls, heel seat rounding and randing mechanism mounted in operative position `relative thereto, a guard for the upper, and a swingingly mounted oiling pad mounted in position to oil the uppers as the shoe is fed to operative position, said oiling pad being arranged to be swung to inoperative position at will.

' 8. An apparatus of the kind described, comprising means for feeding the stock, means for rounding olf the periphery thereof, and means for simultaneously randing oif the peripheral top surface of the material, said randing-olf means having a mounting separate from and a detachable connection with said feeding means whereby it may be controlled therefrom or have an independent adjustment at will.

9. An apparatus of the kind described, comprising a swingingly mounted yielding feed roll for feeding the stock, and a randing cutter having a mounting separate from said feed roll with a detachable connection thereto and a separate adjusting means whereby it may be connected to move with said feed roll or be separately adjusted at will.

10. An apparatus of the kind described, comprising a swingingly mounted yielding feed roll for feeding the stock, a randing cutter swingingly mounted adjacent said feed roll and having a disconnectible adjusting device, and means for detachably connecting said randing cutter with said feed roll for swinging movement therewith.

11. An apparatus of the kind described, comprising a pair of coacting feed rolls, one thereof having a yielding swinging mounting, a heel-seat rounding knife mounted in operative relation thereto, and a randing knife sivingingly mounted adjacent said upper feed roll with a detachable separate adjusting means, and means for .detachably connecting said randing knife with said upper feed roll to be controlled thereby at will.

12. An apparatus of the kind described, comprising a swingingly mounted yielding feed roll, a randing knife swingingly mounted adjacent thereto and having a detachable connection therewith, and disconnectible means for separately adjusting said randing knife, said means consisting of an eye-bolt having a threaded adjusting connection with the randing cutter, and a bolt insertible through the eye thereof arranged to hold the same in rigid relation to a fixed support.

13. A machine for trimming the soles of boots and shoes having, in combination, a trimming knife, a pair of feed wheels arranged to engage the sole on opposite sides of the line of cut above and below the trimming knife, and a stationary crease guide supported adjacent to the trimming knife and arranged to determine the line of cut made by the knife, substantially as described.

111. A machine for trimming the soles of boots and shoes having, in combination, means for feeding the shoe, a crease guide, and a randing knife supported in close proximity to the crease guide and having provision for adjustment to and from the guide both in the line of feed and transversely of the line of feed, substantially as described.

15. A machine for trimming the soles of boots and shoes having, in combination, means for feeding the shoe, a crease guide, and a randing knife supported in close proximity to the crease guide and having provision for a vertical adjustment and horizontal adjustments to and from the guide both in the line of feed and transversely of lthe line of feed,fsubstantially as described.

16. An apparatus ofk the kind described, comprising a swinging yieldably mounted feed roll for feeding the stock, said roll being peripherally grooved, and a randing knife adjustably mounted laterally adjacent said feed roll for reducing the top surface of the stock adjacent its periphery, and substantially parallel with the bottom surface, said knife being movably mounted and connelclted to be controlled by said'yieldable feed ro 17. An apparatus of the kind described, comprising a pair of spaced apart feed wheels for gripping and feeding the stock, a rounding knife held in position between said gripping wheels, and a randing knife mounted adjacent said gripping means, and adapted to act on the top surface of the stock in the same horizontal plane with said gripping means, said lmife being mounted for lateral adjustment transverse of the direction of the feed, and also having provision for longitudinal adjustment along the line of feed.

18. An apparatus of the kind described, comprising a pair of spaced apart feed rolls, each roll being peripherally grooved in substantially the same vertical plane, a rounding knife adjustably held with its cutting edge in the groove of each roll, adjacent the work feeding portion of said rolls, and means lfor yieldably drawing said pair toward each other to grip the work between them, a heel seat rounding cutter having its operative edge extending Substantially in the line of the axes of said rolls, and a randing tool adjustably mounted so that its operative edge may be brought adjacent the work engaging portion of the feed rolls.

19. An apparatus of the kind described, comprising a pair of coacting feeding rolls, a heel seat rounding knife, and a randing knife mounted in operative relation thereto, each feeding roll having a 'peripheral groove therein of suiiicient extent and depth to receive said rounding knife, the rounding knife extending from one groove to the other, and being fitted within both grooves, the randing knifeV extending outward beyond the rolls, and a guard having a portion extending outward and arranged to protect the upper leather from scuiing and Contact with said randing knife. p

`20. An apparatus of the kinddescribed, comprising a pair of oppositely coacting feed rolls, each roll comprising two wheels adj ustably held on the same axle, a heel seat rounding knife adjustably secured in position between the spaced wheels of each feed roll, and randing mechanism mounted in operative position relative thereto, a guard for the upper, and a swingingly mounted oiling pad mounted in position to oil the upper as the shoe is fed to operative posi-y tion, said oiling pad being arranged to be swung to inoperative position at will.

21. An apparatus "of the kind described, comprising four 'feeding' wheels arranged in coacting pairs, the upper pair spaced apart and rotatable in the same axial line, and the mesme lower pair rotatable in the same axial line, a vrounding knife positioned in the space between each pair and extending across the line `of feed, adjacent thel point where said rolls 'engage the stock, and means for simulta'i'ieously r-a'nding of the peripheral top surface of `the material, said randing-off `n-earrs having a moiuiting separate lfrom and a detachable connection with said feeding mea-'ns whereby it may be controlled therefrrpi or have an independent adjustment at wr.

22. An apparatus of the kind described, eomprising upper and lower feed rolls having alined grooves in each roll, a rounding knife fitted within the two grooves of said feed lrolls, a guard for the shoe upper having a crease guide `projecting substantially per-- pendicular thereto, and a swingingly mounted oiling pad to oil the shoe as it is fed longitudinally of said guide and said guard, said oiling vpad being arranged to be swung int) operative or inoperative position at w1 28. An apparatus of the kind described, comprising 'upper and lower feed rolls having alined grooves in each roll, a heel seat rounding knife mounted to lit within said grooves, and a guard extending outwardly beyond said rolls and knife to protect the shoe, said guard having an outwardly projecting crease guide on its lower portion.

ln testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

LOUIS Gr. FREEMAN.

Witnesses:

BENMJ. W. FREEMAN, A. lV. HAGEMANN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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