US1690198A - Trimming machine - Google Patents

Description

Nov. 6, 1928.

G. J. JULIAN,

TRIMMING MACHINE Filed Aug. 31. 1925 Patented Nov. 6,l 1928. l

UNITED STATES PATENT OFFICE. Y

GIDEON' J.' JULIAN, BEVERLY, MASSACHUSETTS, ASSIGNOB '10 UNITED SHOE'MA- i CHINEBY OORPRATION, .OF PATEBSON, NEW JERSEY, A` CORPORATION 0F NEW JERSEY.

mammina MACHINE.

Appliaation med August 31,1925.` serial No. 53,642.

Y This invention relates to trimming maf chines andtheiinvention is illustrated as embodied ina sole trimming machine of the type known'as a Planet sole rounder in the use of which a sole isclamped yupon a stationary pattern and a roundingknife is caused to travel around the pattern to trim the sole. It will be understood, however, that in various aspects the inventionis not limited to embodiment in machines of this type, being also applicable, for example, to machines in which the relative travel of'a knife and a pattern is secured byrotation of the pattern.

In machines of the Planet sole rounder type the sole is supported vin a horizontalplane and the rounding o r trimming knife is pivoted to swing about a vertical axis so that its cutting edge may be kept in contact with the pattern throughout the travel of the knife. The chip or `stringproduced by the knife however, by hugging closely the edge of the work immediately behind the knife, may in terfere more' or less with the free swinging of the knife about its vertical pivot, particularly at lthe toeV and heel of the sole,"and therefore may tend to prevent t-he rcutting edge fromfollowing accurately the outline of the pattern. f v y One ob`ect ofthe present invention is to prevent t e chip or string from interfering with the free" swinging movement of the the trimming knife. y

With this object `in View, and in accordance with one feature of the present invention, means is provided for deflecting the chip so as to provide ample clearance for the knife during the trimming operation. In the construction herein shown this means vcomprises a chip deflector which is carried by the knife arm and is arranged to follow the knife so as progressively to deect the clip outwardly on theplaneof the work, and at a substantially constant angle from. the trimming knife. V

Another feature of the invention consists inthe provision of a safety device in the nature of `a knife guard for preventingfinjury to the operatorisha'nds by cuts from the `trin'nning knife. As shown, the knife guard `is carried bythe chip deflector and is arranged to overliel the yupper end of the knife so as to prevent the opcrators hands from inadvertently coming in contact with the knife edge.

The invention will be more fully explained wi th reference to the accompanying drawingsY in which one embodiment of the invention is illustrated as applied to a sole rounding machine of the same general type as that, disclosed in Letters Patent of the United States No. 1,506,839, granted September 2,

l 1924, onmy application.

vcertain portions of the rounding machine shown in Fig. l, the deflector and associated movable parts being shown in a different position with respect to the work; and y Fig. 3 is a perspective view of the parts shown in Fig.

- As in theV machine set forth in the Letters Patent referred to, the illustrated machine isprovided with a fixed pattern 6 and a rotating knife carrier 8, the latter being supported upon the usual rotating circular table a small portion of which is indicated at 10. The rounding knife l2 is carried by a yoke member pivotally vmounted in the usual manner upon the inner end ofi an arm 14 secured to a segmental plate 16 which is pivoted at 18 to the table 10. The plate 16 is provided with a gear segment 20 engaged by a pinion 22 which is acted `upon by a spring (not shown) tending to turn thepinion in a direction to press thefknife against the pattern. The knife carrier 8 is moved in and out and is oscillated to change its angular position'by two cranks 24 and 26 which are mounted upon the rotating table 10 and are connected with the knife carrier. The cranks 24 and 26 make two revolutions during the rounding 'of a sole, the result of this action beine' such that Vthere will be a rapid swinging movement of the knife car- (ttl rier to keep the direction of pull upon the knife approximately tangent to the pattern at the point of operation and also to vary the travel of the knife so that the carrier will be swung through an angle While the knife is operating about the comparatively sharp curve at the heel or about the sharper curve at the toe.

The chip detlector, which is indicated at 30, is arranged to follow immediately behind the trimming knife as the latter travels around the pattern. To this, end, the de tleetor 30 is carried at one extremity of an arm 32 the opposite forked end of which is pivotally connected by means of a vertical stud 34 with the knife-carrying arm lulllo hold the deflector yieldingly agr-.inst the pattern a spring-pressed plunger 3G carried by the arm 14 bears against a shoulder formed on the detlector-carrying arm 32 and tends to swing the arm 32 inwardly tovcrrd the pattern. An adjustable stop screw 38, provided with a suitable locking nut it), extends through the forked end portion of the arm 3Q and bears at its inner end against ay lug stl on the lmife-carrying` arm 1t to limit the swinging movement of the arm 32 under the influence of the plunger Sti vvhen the chip` deflector is out of engagement with the pattern.

As shown, the chip defiector 3() is made in the form of an elongated Wedge and if; supported in a vertical position with its point or thin edge portion located immediately behind the heel of the trimming knife. The chip deflector extends vertically from the horizontal plane of the upper end of the trimming knife to the bottom of the plane of the lower face of t-he pattern and the smooth inner face of the deflector is arranged to bear against the edge of the pattern and the trimmed edge of the sole. To enable the Wedge to swing in the horizontal plane of the pattern so as to adapt itself to the curves of the pattern the Wedge is carried at the upper end of a stem 'lil (Fig. 3) which is mounted in a vertical bearing in the arm 32, As shown. the stem 42 depends from the rear end of the deflector, which, being free to rotate in conformity to its guiding surface, is tilted in passing a corner or an undulation to the extent that its apex? Which detlects the trimmed strip, is maintained substantially in the plane of the outer surface of the trimming knife notwithstanding the latters independent rotation. ln this manner the deflector compensates for the contour of the sole, and provides substantially the same relief for the knife irrespective of its position on the sole, since in passinaV a corner ofthe sole the deflector is rotated oppositely to but commensurately with the cutter. Normally the detlector is main tained in a position substantially parallel to the plane of the trimming knife by the action of a spring-pressed plunger Atft which is confined within a recess Lit-G in the arm 32 and is arranged to bear against a flattened surface 48 on the detlector stem 4Q. The plunger -fl-ft yields to'permit the detlector to ad]- ust itself readily so that the forward ex tremity of the deflector will be directed toward the trimming knife.

In operation, as the knife travels around the pattern, the chip deflcctor is constrained to follow immediately behind the knife and by reason of its wedge shape the deflector func tions to displace the-string or chip produced b v the knife sutlirtfiently to relieve the pressure of the chip against the face of the knife and thus to permit the knife to swing as much as is nece, .ary to insure that its cutting edge will. be continually maintained in engagement `with the edge of the pattern. By thus causing the knife edge accurately to follow the contour of the pattern the sole will be trimmed accurately to a corresponding contour, there being no deviation of the knife from the contour of the pattern even at the sharply cu rvcd portions at the heel and toe.

The knife guard, indicated at 5t) in Fig. 2l, carried by the detleetor 30. As shown, the guard 5t) comprises a plate which extends forwardly beyond the leading portion of the delector sm'iciently to overlie the upper end o l the knife l2. The guard 5t) is removably secured to the delleetor 3() by means of a screw and is held against edgcwise displacement by meansof a dou'el pin Liet. rlhe forward extremity of the guard 50 is curved downwardly. as shown at 5G, the better to guard the cutting edge of the knife. The width of the guard 50 is sutlicient to insure that the swinging of the chip defiector will not remove the guard from operative position above the, trinr ming knife, the knife being protected by the guard irrespective of the angular position of the dcflector with respect to the knife. Since the jj iard 50 at all times completely covers the upper end portion of the trimminff knife it functions to prevent the operators lingers from being caught and cnt by the knife should hc inadvertently bring his hand down upon or in advance of the knife as, he might do for the purpose of picking up the chip which is being trimmed from the sole. Upon removal of the screw 52 the knife guard 5t) may be readily detached from the chip detlector for the purpose of facilitating the removal and replacement of the trimming knife.

Having thus described my inventiont what I claim as new and desire to secure by Letters; Patent of the United States is:

1. In a sole trimming machine, means for trimming material from a solo, and means adapted for guidance by the sole and com pensativo therefor for detlecting said material from said trimming means. i

2. In a sole trin'nning machine, the combination with a pattern and a knife relatively Uil movable to trim a sole clamped to the pattern, of means for deilecting the material trimmed from the sole by the knife to relieve the pressure ofsaid material upon the knife during the trimming operation.

3. In a sole trimming machine, the combination with a pattern and a knife relatively movable to trim a sole clamped to the pattern, of a'chip deflector arranged behind the knife to deliect the chip as it is being trimmed from the sole.

4. In a sole trimming machine, the combination with a pattern and a knife arranged to travel around the pattern to trim a' sole clamped toV the pattern, of a chip deflector arranged to follow the knife.

5. In a sole trimming machine, the combination with a pattern, a trimming knife and a knife carrier movable to cause the knife to travel around the pattern, of a chip deflector carried by the knife carrie-r and arranged progressively to deflect the chip trimmed from the y sole by the knife.

6. In a sole trimming. machine, the combination with a pattern and a trimming knife relatively movable to trim a sole clamped to the pattern, of a chip dellector arranged behind the knife, and means for yieldingly. holding the chip 'deflector against the pattern.

7. In a sole trimming machine, the combination with a attern and a trimming knife relatively mova le to trim a sole clamped to the pattern, of a chip deilector arranged behind the knife and yieldingly held in engagement with the pattern and being capable of tilting to vary its angular relation to the pattern at its point of Contact therewith.

8. In a sole trimmingrmachine, the combination with a. pattern and a trimming knife `relatively movable to trim a sole clamped on the pattern, of a. chip deiiector having a wedge formation adapting it to deflect the chip trimmed from the sole by the knife.

9. In a sole trimming machine, the combination with a pattern, a trimming knife and a knife carrier movable to cause the knife to travel around the pattern, of an arm pivoted to the knife kcarrier for swinging movements toward and from the pattern, and a chip ldeflector carried by the arm andv arranged behind the trimming knife.,

10. In a sole trimming machine, the combination with a pattern, a trimming knife and a knife carrier movable to cause the knife to travel around the pattern, of an arm pivoted to the knife carrier for swinging movements toward and from the pattern, a chip deflectcr, and yielding means for acting upon the arm to hold the dei-lector against the pattern.

11. In a sole trimming machine, the combination with a pattern, a trimming knife and a knife carrier movable to cause the knife to travel around the pattern, of a chip deflecing adjustment relatively to the arm in the d knife around the pattern, an arm pivoted to theknife carrier for swinging movement toward and from the pattern, means for limiting the swinging movement of said arm, and a chip deflector carrie-d by the arm arranged to follow the knife.

p 13. In a sole'trimming machine, in combination, a pattern, a trimming knife, a knife carrier movable to transfer the knife around the pattern, a chip deflectork carried by the knife carrier and arranged to follow the knife, and Vyielding means for holding the chip deflector in a normal position substantially parallel to the knife.

14. In al sole trimming machine, the combination with a pattern and a knife arranged to travel around the pattern to trim a sole clamped to the pattern, of means arranged' of a chip deiiector, and means carried by the chip deflector for guarding the knife.

16. In aA sole trimming machine, the combination with a pattern anda knife relatively movable to trim a sole clamped to the pattern, of a chip deflector arranged behind the knife,

and a guard plate carried by the chip deiiector and arranged to overlie the upper end of the knife to guard the cutting edge of the knife.

17. In a sole trimming machine, the combination with a pattern and a knife arranged to travel aroundthe pattern to trim a sole clamped to the pattern, of a knife carrier, a chip defiector carried by the knife carrier and arranged to follow the knife, and a knife guard secured to the chip deilector.

1S'. In a sole trimming machine, the conibination with means for trimming material from a sole, and means for deflecting said material while being trimmed, of means for guarding said trimming means.

19. In a sole trimming machine, means for trimming material from a sole, and means for deflecting said material Iduring the trimming operation, said deflecting means being pivoted rearwardly of the trimming means, and-arranged to engage along one side the material of the sole and toengage along the other side the material trimmed from the sole. Y

In testimony whereof I have signed my name to this specification.

GiDEoN J. JULIAN.

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