US1109842A - Sole-rounding machine. - Google Patents

Description

E. L. HURD.

SOLE ROUNDING MACHINE.

APPLICATION FILED MAR. 2, 1:112.

Patented Sept. 8, 1914.

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SOLE ROUNDING MACHINE.

I APPLICATION FILED MAR. 2, 1912. 1,109,842. a ented Sept. 8, 1914.

3 SHEETS-SHEET 2,

E. L. HURD.

SOLE ROUNDING MACHINE.

APPLICATION FILED MAR. 2, 1912.

Patented Sept. 8, 1914.

3 SEEETSSHEET 3.

UN-trap. sirnrng;

EDWARD L. HUBID, or MILTON, ivrnssnennsnr'rs nssrenon gro umrnn SHOE MACHINERY COMPANY, or PATERSON', NEW anns ny, A conzeonatrronor NEW JERSEY.

Specification of Letters Patent. a A ncatm neamx pa ia a suing teenage.

soLE-noUNnIN-e menmia Patented-$111258, 1914.

and useful Improvements in Sole-Rounding- Machines; and I do hereby declare the fol lowing to be a full,.clear,.and.exact description of the invention, .such as willflenable others skilled in the art to which it appen tains to make and use the same.

This invenion relates to sole rounding,

machines of that general type employing. .a

pattern of the shape or. the sole .to/ be rounded, a knife carrier, and, means for relatively moving. the pattern and knife carrier to transfer the point. of. operation. of?

a the completion of; the rounding operation.

the a knife around. the sole.

When operating upon McKay soles, it is; usual to p'rovide. a machine of this character with a channeling and .a grooving klllfe.

The channelis cut from alpointjustahack of the breast line around-the vshanl z ..an'd fore.- part to a point opposite the start ngpomt.

It is usual to commence the roundingoperation near the heel and round thesheelendjof the sole first. When the. opposite side of; the

heel is reached, the channel knives are throwninto operation. @n the'co npletionof the operation the channel "knives are" Withdrawn at about the point where the rounding out was commenced. It. is com;

monto allow therounding knifeftotranel more than a complete revolution of the. sole; that is, to overnuni the commencement. ofthe cut. in order to insurethecomplete severance of the-wastematerial from the sole.

In the operation of the rounding .ma:-

chines now in -use, the lmife comes to rest;

after the sole is rounded, with its blade pressed against the pattern. The sole blank, is then placed upon the pattern with one point on its edge coincident with the edge of the pattern and against the knife. .Whensor placed, every other part-of. the. periphery'of the sole should project. beyondthe pattern;

If the contour ofthe sole blank'issuchthat another point than that. at the knife. does not project beyond the pattern, the stopping position of the knife isadjnstedaalongzthe pattern until the margin ofithe. soleblank: projects beyond the; pattern-at levenyr point.

except where it engages the knife gsple mundingmaohinefor moving the =rounding knife away from the pattern after In the. illustrated; embodiment of. the inven tron. such. movement occurs. during. the travel of thezknife its stopping: pointback to. ,the P0111171 where theouhon" the succeeding sale will be commenced. Broadly consid- .ered, however, this feature oit he invention.

, is not limited to use aimaohine in. which the knife: is; causedtto overrun. the starting 130191? of theeut.

Another objection which. has been .ob

served-inv the\ usual: manner of positioning [the sole on the pattern' is thatthe blade of.

Lthe: knife; when imposition to start .a. cut,. is

,parellel. toor sometirneaso turnedl'that the:

cutting edge of. the I knife is inclined". away fnom; the. sole-edge; It;is oftennecessary, in orderto cause, the. 0 -.-pr0perly. stai' the out, .fnrthe'. operative to cut a slight notch. in the. sole by .forcing it. against the knife by hand..and-,thus cause an engage ment offith'eyhife edge with the sole edge before it isclampedl upon thepattern. j

Another objectzof -this invention is to overcome-t his-. difiiculty providing; in a;

.sole rounding machine,meanssfor position ingthe roundingknife withwitscuttmgedge round ng operation: ,is-cQmmenced.-

{13o this-end; ta -further feature of. the: ventiom comprises means f-on; bringing. the

' inclinedotoward the .sole edge beforethe at the same time that it is removed from contact with the pattern as heretofore described, although this feature of the invention is not limited in its use to ,a sole'rounding machine which the knife overruns the point of completion of the cut.

Another object of the invention is to provide means in a sole rounding machinefor opleration upon McKay or other soles in w ich the channel is'cut during. the rounding operation, for varying the distance of the channel cut from the edge of the sole while using the same patterns which are employed for soles without a channel.

In accordance with this object a further feature of the invention comprises the provision of an auxiliary pattern, cooperating with the usual pattern, conforming in shape to the contour of the channel to be formed. Means is provided for guiding the rounded knife 'inthe usual manner by its'pattern while the channel knife is positioned by the auxiliary pattern which would, ordinarily, be narrower in the shank.

Another object of the invention isto provide improved means in a sole rounding machine for automatically withdrawing the channeling knife from the sole at the end of the cut.

In accordance with this object, a further feature of the invention comprises the provision in a sole rounding machine, of a lever carried by the channeling knife block, and

means for actuating the lever at the end of the out, to engage the sole and lift the channeling knife therefrom. v

To the accomplishment of these objects, and such others as may hereinafter appear, the invention comprises the general features and combinations of parts hereinafter described and more particularly pointed out in the appended claims.

The invention is illustrated as embodied in a machine of the general type disclosed in LettersPatent of the United States, No. 911,511, dated. February 2, 1909 and grant ed to United-Shoe Machinery Company on the application ofMayo & Buckminster. It

. is to be understood, however, that the inven' tionis not limited in'itsapplication to the, particular type of sole rounding machinetherein described and illustrated.

The preferred embodiment of the' invention is illustrated in the accompanying drawings, lllWhlCllZ-- I .Figure 1 is a front elevation of the upper portion of a sole'roundmg machine of the type referred to; Fig. 2 15 a section on an'enlarged scale on the iine 22 of Fig. 1 showing the position of the. rounding knife and associated parts in their normalposition of rest at the completion of an operation upon asole; Fig. 3'is a plan of the rounding knife and knife block; Fig. 4 is an elevation of the parts shown in 3 ioo'mngfrom the left; Fig. 5 is an enlarged section on the line 55 of Fig. 1 showing the parts in the position occupied when operating upon the shank of a sole; Fig. 6 is an elevation showing particularly the channeling and grooving knives. and the means for withdrawing them from the sole at the completion of the cut; Fig. 7 is adetail view showing particularly the channel knife and its retaining means; Fig. 8 is a detail of the tripping arm by which the mechanism for lifting the -channeling and grooving knives is actuated. I,

The general mode of operation of the illustrated sole rounding machine is identical with that of the'Mayo & Buckrninster patent to which reference has been made and from which a full description of its actuating mechanism may be had. The mechanism for imparting the overrun or excess travel of the rounding knife beyond its starting point may be such. as is described in the Letters Patent of the United States, No. 540,062, granted upon the application of Gideon Julian and dated May 28, 1895 to which reference maybe had for a complete description. The general mode of operation of machines constructed in accordance with the aforementioned patents is well known in the art and therefore there is illustrated and, particularly described herein only those parts. of the machine closely associated with the knives and rimbodying'thenovel features of the invention. There is indicated in Fig. 1- the arm 1 carrying the usual .clamping devices for securing the sole upon the rounding pattern R which is mounted upon the table 2. The knife holder arm 3 is of'the usual construction and adapted to hold thecutting tools yieldingly toward thepattern. All of these parts may be,,and preferably are, in accordance with the patents hereinbefore referred to.v

- A knife carrier :or yoke 4 issecured by trunnions 5- to theend of the arm 3. The lower arm of the ypke.,(Fig.5)1has fixed thereon a block 6 w 'ch'isyieldingly pressed bythe arm?) against an auxiliary or channelingpattern (3.. The rounding knife block ,8 is mounted upon the .block 6 so as to slide toward and from'the pattern lts for-. warrLmotion is limitedflby-a pin 9 toward which the blockis pressed by a spring 10 (Figs. 3 and:.5). The rounding knife 11 is clamped in ,aslot-zin thelk inifezblock by a screw 12. Theffrontor inner end of the rounding lmife'block'is adapted to engage the rounding pattern R as is usual in machines of' this character. it is apparent fromFig'. 5 that theblock 6 will cause the lmife carrier e to move in and out in accordance with the contour of the channeling pattern C, but the knife block 8, being spring pressed against the rounding pat- 40 I is slotted to receive a screw 28 threaded into i by hand.

tern R by a spring of considerably lessstrength than the spring which holds the knife carrier toward the patterns, will move in and out inaccdrdance with the contour of the pattern R.

The yoke or'knife carrier 4 carries a block 14 igs. 5 and 7) adjustably secured there-v ward and from the work. The front end'of the block 16, has an adjustably mounted 'presser foot 18 (Fig. 6) which, during the channeling operation, bears upon the sole and determines the depth of the channel .made therein. A grooving tool 19 is .adjustably secured to the block 16 by a screw 20 passing through aslot in a strap 21 (see Fig.

of the grooving tool and its upper end is slotted to receive a collar on av screw 22 threaded into the block 16. By loosening the screw 20, the knife may be adjusted vertically by the screw 22 and longitudinally The block 16 also carries the channel knife 23 (Figs. 6 and 7) mounted thereon in such a manner that it may be replaced after grinding in its original position. The channel knife is secured to the block by means'of a strap 24 which may be clamped in adjusted position by the screw 25. The lower end of the strap 24 is round: ed and engages a groove in the-shank of the channel knife and its upper end engages a groove 26 in the block 16 which is on an arc struck from the center of the screw 25. The strap 24 is connected by a pin 26 with one end of a link 27, the other end of which the block 16. \(Vhen the screw. 25 is loosened, thechannel knife 23 may be withdrawn for sharpening and replaced at its meansof the handle 30 pivoted on the block originalfangle. If it is desired to adjust the angle of the channel knife, the screw 28 must be loosened as well as the screw 25 to permit the strap 24 to be swung about the screw .25 as a center. If the screw 28.is then made tight, the angle of the strap 24 will be fixed so that the knife may be with-' drawn and replaced'as often as desired without losing its angular location. Astop screw 29 is threaded into the block 16 to 16 and having a cam surface 31' incontact with the block 14. A spring 32,-1s interposed between the lug 33 .on. the block 16 and a set screw 34 mounted ,intheblock. 14

g The lower end of the strap is rounded and engages a groove in the shank to yieldingly hold the block 16 and its knivestoward the sole. K

Referring now more particularly to Fig. 6, the feature of the invention which relates to theautomatic lifting of the channeling and grooving knives at the completion of the cutting operation comprises two levers 36 and 37 pivoted one above the other on a part of the presser foot 18. The lower lever 37 is adapted to be actuated upon a movement of the upper lever by means of a lug' 38 engaging a corresponding slot in the lever 37. This is, in effect, a single toothed gear. The position of these levers'during the channeling and grooving operations is shown in full lines in Fig. 6, at which time the lower end of the lever 37 is swung'about its pivot into a position above the sole and above the sole engaging portion of the presser foot 18. At this time the lug 38 forms a lock to prevent accidental movement of the lever'37. The lever 36 is normally held in the position showh in Fig. 6 by atorsion spring 39 (Fig. 5)-which holds itsfing'er 40 against a portion 'of the lever 37. At the time when the channeling and grooving knives are to be withdrawn from the sole, the upper end of the lever 36 engages a yielding abutment formed by an arm 41 projecting from the standard 42 which is of a construction common to machines of this character. Fig. 5 illustrates the knife lifting mechanism at the point in the channeling operation when it is about to be actuated by the arm 41 and be turned into the position shown in dotted lines in 4 Fig. 6. The lever 37 at this time acts, by reason of'its engagement with the sole, to pry the tools from the sole and to hold them in their raised position so long as the lever 37 continues to bear upon the sole.

The mounting of the arm 41 is shown particularly in Figs. 5 and 8. The arm 41 is pivoted at 43 in a stud 44 which is adjust ably secured in the head of a bolt 45. The

and channeling operation the lever 36 en- I gages the arm 41 and is thereby moved backwardly (to the right in Fig. 6) withoutordinarily changing the position, of the stud 44 in its notch 47because the spring 46, holding the pin in the, notch, is stronger than the spring 39 acting on the lever. The spring 46, however, permits the stud 44 to yield, if

occasion requires. This turns the lever 37 down into engagement with the ,sole and 110 bolt 45 is held yiel'dingly downward by a lifts the channeling and grooving knives. Continued pressure on the arm 41, caused by the continued forward movement of the knife carrier for the over-run after the channeling and grooving knives have been lifted from the sole, lifts it upward, the arm turning about its pivot 43, and, if the over-run is sufiiciently long, permits the lever 36 to pass beneath it. The arm 41 thus offers no obstruction to the over-run movement of the roundinv knife. Similarly on the return of the knife carrier, after over-running, the lever 36 which has dropped to the full line position of Fig. 6"again lifts the arm 41 about'its pivot 43 and passes beneath it to the position shown in Fig. 2.

After the machine has come to rest and preferably before the removal of the rounded sole, the operative will lift the lever into a horizontal position (see Fig. 1) to raise the block 16 and thus to remove the channeling and grooving knives, presser foot and the automatic means for lifting these parts, from engagement with the sole. The parts remain in this position when the operation upon the next sole is commenced and continue in this inoperative position until the tools reach the point at which it is desired to commence the channeling operation. This point is designatedby a. on Fig. 2. Mechanism (see Figs. 1 and 2) is provided for automatically depressing the handle 30 and rendering the channeling tools operative at this time. The arm 3 carries a bell crank lever 49 pivoted on a stud 50 and normally held with the arm 51 in a substantially vertical position by means of a spring 52. \Vhen the lever'30 is in a horizontal po sition, that is, when the channeling tools are inoperative, the handle lies below the arm 53 of the bell crank. The other arm51 will strike an adjustable finger 54 at'the time the channeling is to be commenced, thus turning the bell crank and depressing the handle 30,

which will lower the channeling and grooving knives into their operative positions.

The finger 54 is adjustably mounted in a bracket 55 pivoted at 56 on a projection from the standard 42. The bracket 55 is held in its normal position by a spring pressed plunger 57 in engagement with a flat boss on the bearing projecting from the standard 42. If it is desired to render the finger inoperative, it may be lifted and will .be held in the raised position by the flattened boss 58 (Fig. 2). Such slight variation as may be desired in the position of the stop and start of the channel and groove may be obtained by moving the standard 42 in the bracket 59 and adjusting the finger 54. This standard and the similar standard for the toe end of the sole are secured by winged nuts 60 in the bracket 59 in the usual manner.

I The mechanism provided for moving the at the same time turning it so that its cutting edge pointsdiagonally toward-the pattern, is shown particularly in Figs. 1 and 2. The backward motion of the cutting tools on the return after the over-run or excess travel in rounding the sole .is shown in Fig. 2 as being from the point indicated approximately by b to the position of the tools inthat figure. The knife carrier 4 has a vertical pin 62 which, during the backward movement of the tools, will engage a latch 63. The location of the pin is such that contact with the latch will turn the knife carrier 4 and, therefore, all the tools carried thereby, about the trunnions 5. The form of the rounding knife block is such that the rounded forward end acts as a lever to pry the rounding knife away from the pattern (see Fig. 3),. The turning of the rounding knife block about its corner will leave the round.- ing knife with its cutting edge directed diagonally toward the pattern when the machine comes to rest, as indicated in dotted lines in Fig. 2.

The latch 63 is pivoted on the lower end of a hinged bracket 64 which is adjustably secured to the arm lby a screw 65. A lug 66 on the bracket engages a lug 67 on the latch to limit the downward motion of the latch and hold it normallyin theposition shown in Fig. 1. Thus when the pin 62, during the forward'movement of the tools, passes beneath the latch, it will be lifted to allow the pin 62 to pass and then drop and rotate the knife carrier 4 upon movement of the carrier and cutting tools in the reverse direction. By loosening the screw 65, the bracket 64 may be adjusted to give the rounding knife the desired angle and amount of withdrawal from the pattern. The bracket 64 is hinged and adapted to be held eitherin its depress the treadle, which will clamp the sole upon the pattern and start the operation of the machine in the usual manner. The rounding knife at this time is in such a position that its cutting edge is directed at an angle toward the sole and, therefore, it cannot fail to immediately take a chip and it will rapidly run in toward the pattern, under. the influence of the knife holder arm spring, until the knife block contacts therewith. The knife block will then follow the contour of the rounding pattern around the heel in the direction of the arrow of Fig. 2, and as the bell crank 49 passes below the finger 54:, it will be actuated in the manner grooving knives into operation at a (Fig. 2). The channeling tool will follow the contour of the channeling pattern '6, as indicated in dotted lines in Fig.2, thus producing a wider margin outside the channel at the shank of the sole than, at the commencement of the cut at the heel or around the forepart. After passing around the fore part and the other side of the shank, the tools operate to a point indicated on the pattern in Fig. 2 at b, which is somewhat beyond the starting point, at which time the forward movement of the tools is stopped and a slight movement in the reverse direction takes place. Just before the tools stop their forward motion, the arm 41 engages the trip lever 36 which actuates the lever 37 to pry the channeling and grooving knives from the sole in the manner described. The reverse movement turns the rounding knife in the manner which has been described and the machine is brought to rest. The operator will then lift the handle 3O toremove the lever 37 from contact with the sole and remove the sole which has been rounded. It is evident that if it is desired to vary the width of the margin or feather at the shank, this can be done by inserting a channeling pat: tern of different configuration. y

While the specific construction and arrangement of parts shown and described in the drawing isthe best form at present known to the inventor, it should be understood that this construction and arrangement is not essential except in so far as specified in the claims.

What is claimed as new, is

1. A sole rounding machine, having, in combination, a pattern, a rounding knife guided by the pattern, means for imparting a relative movement to the pattern and the rounding knife to round the sole, and means operating at the end of the rounding operation for swingin the knife away from the pattern to a position with its cutting edge directed diagonally toward the pattern, substantially as described.

2. A sole rounding machine, having, in combination, a pattern, a. rounding knife guided by the pattern, means for imparting a relative movement to the pattern and the rounding knife to round thesole, and means operating automatically at the end of the rounding operation for moving the knife out of contact with the pattern, substantially as described.

3. A sole rounding machine, having, in combination, a'pattern smaller than the sole blank to be operated upon, a rounding knife guided by the pattern, means for imparting arelative movement tothe pattern and the described to throw the channeling and rounding knife to round the sole, and means for initially holding the rounding knife in such a position that the cut on the sole is commenced at the edge of the margin projecting from the pattern and continues diagonally toward the pattern untilthe pattern is reached, substantially as described.

4. A sole rounding machine, having, in combination, a rounding knife guided by the pattern, means to cause the knife to traverse the outline of the pattern, overrun and return to its starting point, and means operating during the return movement to swing the rounding knife to a position with its cutting edge pointing toward the sole and its blade directed at an acute angle to the outline of the pattern, substantially as described.

5. A sole rounding machine, having, in combination, a rounding knife and a channeling knife, a pattern for guiding the rounding knife, ablock for supporting the channeling knife, means to cause the round ing knife to traverse the outline of the pattern, a pair of geared levers pivotally mounted on the channeling knife block, one of. said levers being arranged to engage the sole and means for automatically actuating the other lever to pry the channeling knife out of operative engagement with the sole at the end of the traversing movement of the rounding knife, substantially as described. j

6. A sole rounding machine, having, in combination, a rounding knifeand a channeling knife, a pattern for guiding the rounding knife, a block for supporting the channeling knife, means to cause the round-' ing'knife to traverse the outline of the pattern, a lever pivoted on the knife block and movable to engage the sole and pry the channeling knife out of operative engagement therewith and means for automatically actuating said lever at a predetermined point in the rounding operation, substantially as described.

7. A sole rounding machine, having, in combination, a rounding knife, a patternfor guiding the rounding knife, channehng devices, a separable pattern of different outline for guiding the channeling devrces, and means for imparting movement to the tools to cause them to traverse the outlines of their respective patterns, substantially as described.

movement of the rounding knife to raise the channeling knife out of engagement with thesole, substantially as described.

' clamping a'sole blank on=theupper surface of the pattern, a knife-carrier movable about the periphery of the pattern, a rounding knife carried :by the knife-carrier and guided by the edge of thepattern means for moving the knife-carrier about ithe pattern to cause the rounding :knife to traverse the periphery of :the pattern and overrun its starting point, a channeling knife carried by the knife-carrier and normally-yieldingly engaging the sole, a "lever carried by the knife-carrier and adapted-to engage the upper surface of the Work and hold the channeling knife out of engagement there- Witllfllld a yielding tripdevice located in position eto operate the lever and raise sthe channeling knife from the sole during the overrun movement of ;the rounding knife, substantially as l described.

'11. A sole rounding -machine, having, in combination, a :knife block, a channeling knife provided with a ilongitudinally grooved shank, .a strap pivoted to the knife block and having a tongue engaging the groove .in said shank, and a dink pivoted to theistrap at one ienda-nd adjusta'bly secured at the iother'end to athe knife block, whereby the strap is maintained \in adjusted angular position when the channeling knife is removed from the knife block, substantially as described.

'12. A sole rounding machine, :having, in

combination, a zlm-ife carrier, a rounding knifeand a channeling dmife mounted :upon the knife-oanrier with provision for independent mov ement and two superposed separately removable patterns having different peripheral outline for guiding the two knives respectively whereby the relation of the outline of the channel out, to'the edge of the-sole, may be varied on soles having the same outline, substantially as described.

13. A sole rounding machine, having, in

substantially as described.

14. A .machine for rounding soles the edges of'which project at all'points beyond the desired contour line, having, in combination, a knife "for trimming the sole to the desired contour and automatic means for preliminarily positioning said lmife with its cutting edge inclined to the. sole-edge Whereby to effect an initial cut .'from the edge of the. sole :to the contour line, substantially asvdescribed.

15. A machine'for rounding soles,.having in combination, an edge-trimming knife arranged to move along the line of out, and means for operating said knife constructed to automatically. position it so;as tomake its initial cut at an angle to the path vin=which it travels in continuing. the cut, substantially as described.

16. A machine for rounding soles, having in combination, .a :tnimming knife, a knife carrier therefor, and means forimparting a relative movement of translation to the sole and lmife for trimming the sole along such line of movement, said means "having zprovision for automatically swingingtheknife carrier atethe end of the rounding-operation to a position-in which rthe cutting edge of the knife is directeddia onally toward the sole edge whereby -to efi ect :the initial out of the succeeding rounding :Qperation at an angle to the main line-of the cut, substantially as descni-bed.

EDWARD ,L. HU'RD. Witnesses:

Anson B. Wnnewoon,

WILLIAM B. :KI-No.

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