US1331613A - Shoe-shaping machine - Google Patents

Description

c. M. BRADFORD AN,D,R. cfsmMoNs.

SHOE SHAPING MACHINE.

APPLICATION FILED Aue.24. 19l6.

Patented Feb. 24, 1920.

C. M. BRADFORD AND R. C. SIMMONS.

'SHOESHAPING MACHINE.

APPLICATION FILED AUG.24| I916.

1 ,33 1 ,6 1 3 Patented Feb. 24, 1920.

' 2 SHEETS-SHEET z.

UNlTED STATES PAZLBEN'I OFFICE. v

CHUSETTS,

i CHARLES M. BRADFORD, OF BOSTON, AND RALPH C. SIMMQNS, OF BEVERLY, MASSA- ASSIGNORS, BY MESNE ASSIGNME'DTTS, TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SHOE-SHAPING MACHINE.

Specification of Letters Patent.

Patented Feb. 24, 1920.

Application filed August 24, 1916. Serial No. 116,676.

To all whom. it may concern.

Be it known that we, CHARLES M. BRAD- roan and RALPH C. SIMMONS, citizens of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, and Beverly, in the county of Essex and $tate of Massachusetts, respectively, have invented certain Improvements in Shoe- Shaping Machines, of which the following description, in connection with the accompanying drawings, is a specification, like has been inserted, it is the usual practice to subject portions of the upper on the last to a beating operation in order to eliminate wrinkles and cause the upper to conform closely to the last. It is particularly desirable to treat in this manner the sides of the upper, including the portions in and adj acent to thecrease between the upper and the sole, and also the top of the forepart of the upper. A practically unavoidable effect of the beating tool in the crease adjacent to the sole, however, is the opening or widening of the crease through the downward bendin of the projecting edge portion of the sole. For this as well as other reasons, therefore, it is desirable, for the best results, to sub ect the sole as well as the upper to treatment, particularly the man ginal portion of the sole, in order to insure a shapely appearance in the finished shoe.

Important objects of this invention are to provide in a single machine improved shoe shaping means in the use of which the shoe ma 'he readily manipulated to secure the precise results required, and to provide improved means for use in shaping both the upper and the sole of the shoe.

To the above and other ends, an important feature of the invention consists in a novel combination and arrangement of mechanism designed to facilitate the presentation of a shoe to different tools in succession to cause the upper to be shaped in conformity to the last and to cause the sole to be operated upon to insure a close relation between the upper and the projecting edge portion of the sole and a shapely appearance of the sole in the finished shoe.

ther features of the invention reside in novel means for operating upon the upper of a shoe, including tools of a novel shape, and also a novel arrangement of the tool with reference to its operating means to facilitate the effective treatment of the shoe.

We do not, however, claim in this application the sole shaping tool and its operating means per se, since that is claimed in the application for Letters Patent for an The above and other features of the invention, including certain details of .con-

struction and combinations of parts, will now be described with reference to the accompanying drawings and pointed out in the claims.

In the drawings:

Figure l is a view in front elevation of a machine in which the invention is embodied,

Fig. 2 is a view of the machine in side elevation,

Fig. 3 is a plan view of a portion of the machine with the frame shown in section on the line 3-3 of Fig. 2,

Fig. l is a detail, in front elevation, of the means for operating the upper beating tool,

Fig. 5 is a view in vertical sect on through a grease dispenser with which the machine is provided,

Fig. 6 shows a portion of the grease dispenser valve detached,

Fig. 7 shows an alternative construction of upper beating tool in which a portion is detachable.

M 8 shows an upper beating tool different construction from that shown the other figures, and

Fig. 9 a section on the line 9-9 Fin". 8.

The operative parts of the machine are mounted upon a frame 2 and include a main use of either tool at will without the necessity for any material change of position on the part'of the operator. ii

nmeans such as that disclosed The tool 6 is arranged to be operated by in United {States Patent No. 768,560, granted upon the application of L. A. Casgrain on Aug. 23, 1190a, comprising an annular series of rolls ll carried by a drum 16 on the shaft 4 and arranged to impart downward impulses in rapid succession to a bar 18 which is slid- .ingly mounted for vertical reciprocatory movement and to the lower end of which the tool 6 is secured. The bar 13 is arranged to 'be'pushed upwardly into the path of the "rolls 16 by upward pressure of the work against the tool 6, and is normally maintained by gravity in its idle pos1t1on in I'which it is supported by the head of a stop -screw 20 in engagement with a lug 22 on the side of the bar. Upward'pressure of a shoe against the tool 6 thus causes the tool to rece ve percusslonal impulses in rapid SLICCGSSIOIIIHS long as the shoe is pressed against it. the tool having substantially a beating effect upon the shoe, wherefore the tool 6 is termed herein a beating tool.

By reference to Figs. 1 and 2 it will be seen that the tool 6, as herein shown, comprises two portons or members 23 and 25, of which the member 23 is shaped to operate upon the upper at the sides .of a shoe and the member 25 to treat the upper at the toe.- The side engaging member 23 of the tool is arranged to extend horizontally from side to side at the front of tlie'machine and has opposite end portions substantially identical in shape to permit opposite sides of a ment in the crease.

shoe to be presented alternately to the tool without the necessity of reversing the shoe end for end.

In order that the member 23 may efi'ertively engage different portions of an upper upon a last, its shoe engaging face presents a transverse convex curvature, and

for the same purpose, as well as to facilitate engagement in the crease between the upper and the sole. the member 23 is also convexly curved transversely across each end, that is to say, the ends of member 23 are so shaped as to appear convex in a plan view. The member, moreover, tapers toward each end to a comparatively thin edge for engaget I In order that the tool may be used also for shaping the upper ence to Fig. 2 it will be seen that the member 23 is inclined downwardly from front to rear at an angle toits path of reciprocatory movement, thus causing its shoe engaging surface to face somewhat toward the front. One purpose and efiect of this arrangement is to render the manipulation of the shoe easier for the operator, since, the

shoe be more conveniently presented to the tool and more easily held against it with the necessary pressure if somewhat inclined from the front downwardly than if held in a horizontal position while pressed upwardly and moved to bring different portions into engagement'with the tool. 7

The member 25 comprises a projection of the tool 6 somewhat above and at the front of the member 23, and is shaped for engagement with the upper at the toe while the shoe. is held with the top of the forepart facing the operator, the position of this member at the front of the tool being such that the shoe may be more conveniently presented for treatment of its toe portion, when required, than if the portion 23 were depended upon to treat the toe as well as the sides of the shoe. In the construction shown in Figs. 1 and 2 the member 25 constitutes an integral part of the tool 6, while' in the construction shown in Fig. 7 which may be used as an alternative 7 construction, the member 25 is detachable from other portions of the tool in order to permit it. to be replaced or to be removed Where its use is not desired.

On most classes of work it is desirable to subject the upper to the influence of heat as well as to percussional impulses in order to facilitate the shaping ofth'e upper to the last through the shrinking action of heat upon the leather. To this end the machine shown includes means for heating the tool 6 comprising a gas flame directed against the tool 3 from a burner'24l which is supplied with gas from a conduit 26, the flame being directed into a hollowed out portion on the rear side of the tool 6, shown by Fig. 2. The flow of gas and consequently the, degree of heat in the tool is regulated by a valve 27. The reciprocatory movements of the tool, it. will be understood, are sufficiently shortfto insure that the flame shall not be projected beyond the edges of thetool into engagement with the work. It will likewise be understood that the disclosure of this particular heating means is merely illustrative and that various means may be employed for heating the tool.

In order that the tool 6 may be maintained at such a temperature as to insure effective results without becoming over-heated in such manner as to injure the work, it is desirable that means he provided for indicating con tinuously the temperature of the tool. To this end the tool is projected somewhat toward the front from the bar 18and is bored vertically at :28 to receive the bulb of a then mometer 30 which is mounted upon the front of the frame. VVhil-e the bore 28 is made somewhat larger than the bulb in order to avoid breaking the bulb during the operation of the tool, and consequently the thermometer will not register precisely the degree of heat in the tool, this difference will be recognized as substantially constant, and with proper allowance for the difference the temperature of the tool may be determined .w1th sufficient accuracy for practical purposes.

In connection particularly with the means for heating the tool, a further important advantage attaches to the manner in which the tool is mounted, as hereinbefore described, with its upper engaging surface directed generally in inclined relation to its path of reciprocatory movement. It will be evident that with the surface of the work presented to the tool thus inclined to the direction of the beating impulse of the tool a slight relative slip between the tool and the shoe will take place at each impulse, the tool thus having an ironing efi'ect in addition to its beating effect. Among other advantages this serves as insurance against burning the leather by a dwell of the heated tool too long in contact with the same portion of the surface.

Figs. 8 and 9 show an alternative form of upper beating tool 6 which is secured to a vertically reciprocatory bar 18 similar to the bar 18 of Figs. 2 and 4:. The tool 6, when used, should preferably extend in sub stantially the same relation to the machine as the tool 6 in Figs. 1 and 2, and as shown in Fig. 9 this tool has a lower surface curved transversely for engagement with the shoe, the tool being extended, as shown in Fig. 8, to permit it to be used for shaping portions such as the top of the forepart of the upper and having an end portion tapering toward its outer extremity and presenting a lower surface convexly curved in different directions in order to facilitate ei'igagenient of the tool with the upper in the shank and close to the sole. The tool 6, moreover, has at its inner end a portion 31 shaped especially for engagement with the upper in the crease adjacent to the sole. The tool in the construction shown is arranged to be heated by a gas flame issuing from a stationary burner 24, thetoolbein g bored longitudinally to receive the flame and having openings 33 for the escape of the products of combustion. In order to facilitate the heating of the outer end portion of the tool, the tool is inclined upwardly as shown in Fig. 8.

The sole shaping tool 10 is carried by one arm 32 of a bell crank lever which is mounted on a rock shaft 34, the other arm 36 of the bell crank extending rearwardly toward the end of the shaft 8. The arm 36 is forked at its rear end, and clamped to the forked portion is a rod 38 upon which a block 40 is slidingly mounted. The shaft 8 is provided at its front end with a crank disk 42 which carries a crank pin 4 L, the projecting end of the pin n being j ournaled 1n the block 40. The pin L4 is mounted on an eccentric 456 which is adjustable in the disk 42 to vary the eccentricity or throw of the crank pin and is secured in adjusted po sition by means of a bolt 48. Through these connections the bell crank 32, 36 and the tool 10 will be rapidly oscillated in a continuous manner toward and from the operator during the operation of the machine.

It will be observed that the arm 32 is normally inclined forwardly from the vertical and consequently determines a path of movement of the tool 10 which is inclined downwardly from front to rear, this incline being substantially or approximately the same as the inclination of the portion 2-3 of the tool 6. The purpose and effect of this arrangement is to facilitate the presentation of the shoe to the tool 10 in substantially the same manner as previously explained with reference to the tool 6, it being much easier for the operator to press the shoe diagonally upward and backward than directly upward against the tool. Since the tool 10 extends transversely at the front of the machine, in substantially the same relation to the machine as. the member 23, the shoe may be presented to this member and to the tool 10 successively without any substantial change in the lengthwise inclination of the shoe. In the construction shown the tool 10 is shaped to rub the sole, but it should be understood that in its broader aspects the invention is not limited to a rubbing tool. The longitudinal concave curvature of the shoe engaging surface of the tool 10, as well as its transverse convex curvature, as shown, facilitates the engagement of the tool with all portions of the sole which it may be de sired to treat and renders the tool particularly effective for shaping the marginal portion of the sole.

In the operation of the machine on some classes of work, such, for example, as shoes made of patent or enameled leather, it is desirable, in order additionally to insure against burning the leather by contact with the heated tool 6,.to apply a small quantity of oil orgrease to the surface under treatment. The machine 7 is accordingly provided with grease dispensing means comprising a. receptacle 50 mounted upon a bracket 52 on the frame in convenient position for use and having an outlet opening .in its bottom portion normally closed by a valve 54 which rests upon a beveled seat on the receptacle and is maintained norwardly from this recess on opposite sides of the stem are fluid conducting grooves which terminate at the lower end of the stem. hen the valve is momentarily lifted, therefore, a small quantity of the fluid will be admitted to the recess 58 whence it will run down the grooves 60 to the lower end of the valve and hang suspended in drops for application to the work when the-work is presented inengagement with the end of the stem. It will be evident that the flow of the fluid down the grooves 60 will continue after the valve has closed. In order to localize and hold the drops of fluid for application to the work, the end of the stem 56 is provided with depending projections 62 in line with the grooves 60.

.The grease in the receptacle 50 is maintained in a fluid condition to cause it to flow readily by means of heat applied to the receptacle by a gas burner 64.

In the operation of the machine the heated tool 6 will first be used, the shoe being pressed upwardly against the tool to cause the tool to receive percussional impulses.

from its operating means. For the treatment of the side of the shoe close to the sole the shoe will be positioned to cause an end of the portion 23 of the tool to project into the crease between the upper and the sole and will be moved longitudinally to cause the tool to engage different portions of the upper. If application of grease to the work is desirable, this may be effected by engagement of the shoe with the stem 56 of the valve 541. Afterjone side of the shoe has been'treated the shoe will usually be turned about its longitudi- 'nal and the other side 1 resented to the opposite end of the tool, although the shoe may, if preferred, be turned end for end and the other side presented to the-same end of the tool. If desired also other portions of the upper, such as the top of the forepart, may be shaped by engagement with the tool 6, preferably on the concave intermediate portion of the member 23; and if .the condition of the shoe requires the shaping of portions of the upper about the toe the ShOe may be presented to the member as shown in Fig. although this op,-

of the sole and press the edges toward the upper in such manner as to insure a' close crease in case the edges may have been bent away from. the upper in the preceding upper shaping operation. Y

In the use of the alternativeform of tool shown in Fig. 8 both sides of the shoe are presented to the same end portion of the tool, the shoe being turned end for end, and the member 31 is also used for shaping theupper in the crease at both sides of the shoe as Well as around the toe. The top of the forepart of the upper also may be shaped by engagement with the extended intermediate por'ion of the tool,

It will be evident from aconsideration of the foregoing disclosure that this'i'nvention provides a. machine which is especially useful in the production of a high grade and maximum quantity of Work, particularly by reason of its adaptability to the varying shapes of different styles and sizes of shoes, the facility with Whichthe work jmay be manipulated to cause the tool to engage all portions which require treatment and in presenting the work to different tools in succession, and the ease with which the operation of the machine upon the work may be observed,

It will be, apparent also that the rapid reciprocating movement of the tool, as well as the relative slip between the tool and the shoe, will tend to obviate any burning of the leather by itscontact with the heated upper engaging tool, since a dwell of the tool upon any portion of the surface for such alength of time as to burn the material is thus avoided.

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

1. A machine of the. class'descrlbed having, in combination, a tool mounted for rec-iprocator i beating movement in angular relation tothe surface of the upper of shoe presented for treatment, a second tool mounted for reciprocatory movement along the surface of thesole of the shoe to shape the sole, said tools being arranged in such relation as to permit portions of the upper and the sole to be operated upon in suc ession without substantial changein'the length wise inclination of the shoe, and means for operating the tools.

2. A machine of the class described having, in combination, a tool mounted for re ciprocatory beating movement in angular relation to the surface of the upper of a ShOe presented for treatment, a second tool mounted for reciprocatory movement along the surface of the sole of the shoe to shape the sole following the operation of said first named tool, both tools being arranged to permit the shoe to be pressed upwardly against them with the portion under treatment in view of the operator, and means for operating said tools.

3. A machine of the class described having, in combination, a shoe beating tool shaped for engagement with the upper of shoe, means for imparting downwardly di- ,rected shoe beating movements to the tool,

the tool having its upper engaging portion inclined downwardly from front to rear at an acute angle to its direction of movement, and a second tool mounted for reciprocatory movement in a path downwardly inclined from front. to rear to shape the sole of the shoe by movement along the surface of the sole following the operation of said first named tool.

4. A machine of the class described having,in combination, a tool mounted for reciprocatory movement to beat the upper of a shoe and shaped for engagement with the upper in the crease adjacent to the margin of the sole, a second tool shaped and mounted to reciprocate along the bottom of the sole at the margin to press the margin toward the upper following the operation of said first tool, the tools being so constructed and arranged as to operate upon the shoe in succession without substantial change in the lengthwise inclination of the shoe, and means for operating said tools.

5. A machine of the class described haw ing, in combination, an upper beating tool and a sole rubbing tool mounted for reciprocatory movement in transverse paths to per mit a shoe to be presented to the tools in succe'ssion with its-longitudinal axis in substantially the same angular relation to the machine, and means for operating said tools.

6. A machine of the class described having, in combination, 'a reciprocatory shoe beating tool having a surface presenting a concave curvature longitudinally of the tool and in transverse relation to its direction of movement for engagement with the upper of a shoe, and a second reciprocatory tool concavely curved longitudinally for rubbing engagement with the sole of the shoe, said tools being disposed with their longitudinal dimensions extending laterally with respect to the operators working position to facilitate the presentation of a shoe to'the different toolsin succession. v

7. In a machine of the class described, a reciprocatory shoe beating tool having an end portion shaped for engagement with a shoe upper in the crease between the upper and the sole and another portion convexly curved for engagement with the to of the forepart of the upper, and means for imparting shoe beating movements to the tool.

8. In a machine of the class described, a reciprocatory shoe beating tool having opposite endportions shaped respectively for treating diiferent portions of the upper of a shoe and an intermediate portion shaped for engagement with the top of the forepart of the upper, and means for imparting shoe beating movements to the tool. v

9. In a machine of the class described, a shoe beating tool having opposite end portionsshaped respectively for engagement with the upper at opposite sides of a shoe to permit the operator to presentthe opposite sides of the upper alternately to the tool without reversing the shoe end for end, the tool having also a portion shaped for engagement with the upper at the toe end, and means for operating the tool.

10. In a machine of the class described, a reciprocatory shoe beating tool having 0pposite end portions for engagement with the upper of a shoe in the crease between the upper and the sole and an intermediate portion shaped for engagement with the top of the forepart of the upper, the tool having also a portion above said intermediate portion shaped for engagement with the upper adjacent to the sole at the toe end of the shoe, and means for operating the tool.

, 11. In a machine of the class described, a reciprocatory shoe beating tool having a member shaped for engagement with the side of a shoe in the crease between the upper and the sole and also with the top of the forepart of the upper, and means for imparting downwardly directed shoe beating movements to the tool in a substantially vertical path, said member being inclined downwardly from front to rear at an angle to its direction of movement to facilitate the presentation of the shoe to the tool, and the tool having also at. the front a portion shaped for engagement with the upper at the toe end of the shoe.

12. A machine of the class described having, in combination, upper beating means comprising a beating tool constructed and arranged to operate upon a shoe presented thereto in an inclined position, and means for shaping the sole of the shoe comprising a second tool mounted for reciprocatory movement in a path substantially parallel to the incline of the shoe as presented to said first-named tool.

13. A machine of the class described hav ing, in combination. upper beating means comprising a tool constructed and arranged to engage the upper at the side of a shoe with the shoe presented in a position downwardly inclined lengthwise from the front of the machine toward the rear, and means for shaping the sole of the shoe comprising a second tool mounted for reciprocatory movement in apath inclined similarly to the position of the shoe as presented to said first-named tool.

' 14.,A machine of the class described having, in combination, upper beating means comprising a tool mounted for reciprocatory beating movement in engagement with the upper at the side of a shoe, and means for shaping the sole of the shoe comprising a second tool mounted for reciprocato'ry movement lengthwise of the sole in transverse relation to the path of movement of said firstnamed tool.

15. A machine of the class described having, in combination, a reciprocatory shoe beating tool having opposite end portions shaped respectively for engagement with the upper at opposite sides of a shoe, and

means for shaping the sole of the shoe comprising a second tool mounted for reciprocatory movement lengthwise of the sole and arranged to extend transversely of the shoe in substantially the same angular relation to a vertical plane'a's said first-named tool.

16. In a machine of the class described,

a reciprocatory shoe beating tool having opposite end portions shaped respectively for engagement withthe upper at opposite sides of a shoe to permit the operator to present the opposite sides of the upper alternately to the tool without reversing the shoe end for end, the tool having also an intermediate portion shaped for engagement with the top of the forepart of the upper,

' and means for imparting downwardly directed beating impulses to the tool.

17. In a machine of theclass described,

fa. reciprocator'y shoe beating tool having opposite end portions shaped respectively for engagement with the upper at opposite sides of 'a shoein the crease between the upper and the sole, said tool extending substantially horizontally in front of the machine with its opposite end portions directed respectively toward the opposite sides of the machine, and means for imparting shoe beating impulses to the tool.

'18. In a machine-of the class describe'd,

a reciprocatory shoe beating tool having 'an end portion shaped for engagement with thefupp'er at the side ofa shoe, said tool extending transversely of the'machine with said end portion directed toward one side 'of'the machine, and mea'nsfor imparting downwardly directed shoe beating'impulse's to the tool. 7

19'. In a machine of the class described, 'a "reciprecatoryshoe beating tool having opposite end portions shaped respectively sides of a shoe and an intermediate portion V shaped for engagement with the top of the forepart of the upper, said tool extending substantially horizontally and having its shoe engaging surface directed diagonally downward and toward the operators position in front of the machine, and means for imparting shoe beating impulses to the tool.

20. In a machine of the class described, a reciprocatory shoe beating tool convexly curved transversely and also convexly curved across its opposite'ends to facilitate engagement of the opposite ends of the tool in the crease between the upper and the sole of a shoe, the shoe engaging surfaceof the tool presenting also a concave curvature lengthwise of the tool to adapt the intermediate portion of the'tool for engagement with the upper over the top of the forepart.

-21. In a machine of the classdescribed, a reciprocatory shoe beating tool having opposite ends shaped to engage in the crease between the upper and the sole of a shoe at the sides of the shoe,"-the' tool having also a portion shaped to engage in the crease at the toe end ofthe shoe, said'toe end engaging portion-being so arranged as to permit the shoe to be presented thereto with the top of the forep'art facing the operator. 1 V r I v 22. Ina machinevo'f the class-described, an upper shaping tool having a longitudinal concavecurvature and a lateral convex curvature, the opposite ends of said tool being shaped to engage a shoe in the crease between the upper and the'sole, and'means for imparting shoe beating impulses to said tool in the direction of the shoe. 7

23. In a machine of the class described, an upper shaping tool having its opposite end portions shaped to engage the sides of a shoe in the crease between the upper and the sole, and means for imparting to said tool shoe beating impulses in a direction substantially perpendicular to the lengthwis dimension of'the tool. I y

24, In a machine of the class described, an upper shaping tool, means for imparting shoe beating impulses to said tool, and means for heating the tool, the tool having its upper engaging face generally inclined to the path of its beating movement to cause a relative slip between the tool and the surface of the upper at each heating impulse of the tool.

25. In'a machine of the class described, an upper shaping tool constructed for engagement in the crease between the upper and the sole at the side of ashoe, means for imparting shoe beating impulses to said tool, and means for heating the tool, said tool b ein constructedto operate upon a shoe presented with its longitudinal axis inclined to the direction of the beating movement'ofthe tool to cause theimpulse of the tool to be directed at an acute angle to the surface of the upper.

26. In a machine of the class described, an upper shaping tool, means for imparting to said tool shoe beating impulses directed downward substantially vertically, and means for heating the tool, said tool having its upper engaging surface facing diagonally forward relatively to its path of movement to cause the beating impulse of the tool to be directed at an acute angle to the surface of a shoe presented for treatment.

27. In a machine of the class described, an upper shaping tool having opposite end portions constructed to engage in the crease between the upper and the sole at the sides of a shoe and a portion between its ends constructed for engagement with the upper over the top of the forepart, means for imparting shoe beating impulses to the tool, and means for heating the tool, the tool being arranged to operate upon a shoe presented thereto in the hands of the operator with the longitudinal axis of the shoe inclined to the direction of movement of the tool.

In testimony whereof I, the said CHARLES M. BRADFORD, have signed my name to this specification.

CHARLES M. BRADFORD.

In testimony whereof I, the said RALPH C. SIMMoNs, have signed my name to this specification.

RALPH G. SIMMONS.

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