US1030710A - Channeling-machine. - Google Patents

Description

F. E. BERTRAND.

CHANNELING MACHINE.

APPLIOATION FILED JULY 24, 1911.

1,030,710, Patented June 25,1912.

'W W @AQ T tmurnn STATES PATENT OFFICE. 5

FBEDERIO E. BERTRAND, 0F SWAIVIPSCOTT, MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, OF PATTERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

CHANNELING-IVIACHINE.

77) all whom it may concern:

Be it known that I, FnEDERIo E. BER

TRAND, a citizen of the United States, re-

siding at Swampscott, in the county of Es- This invention relates to channeling ma chines for turn work adapted particularly to making soles having the characteristics of those employed inthe manufacture of un derwedge childrens turn shoes, such as illustrated and described in United States Letters Patent, issued to A. H. Prenzel, No. 967,053,.dated Aug. 9, 1910.

In making turn shoes the sole is prepared by providing a marginal channel as in the making of a welt insole and by providing outside of said channel a parallel shoulder. the channel and the shoulder extend completely around the sole while in another type one or both of said cuts may extend only to the shank. In making the underwedge shoe illustrated in the patent herein before referred to by the method described in United States Letters Patent, issued to A. H. Prenzel, No. 960,234, dated May 31, 1910, a continuous channel is formed in the margin of the sole on its flesh side, but the shoulder runs only to a point at each side of the shoe about opposite the breast line, the margin of the heel seat of the sole being beveled instead of shouldered. In performing the channeling and shouldering operations, which usually occur simultaneously by means of two knives fitted in one machine, the sole is laid with its grain side upon a suitable support and is advanced through the machineby suitable means. As is well known to those skilled in the art, in a turn shoe the thickness of the edge of the sole, which is exposed in the finished shoe, should be uniform and, therefore, the shoulder knife is adjusted and fitted in the machine to make its out by measuring the desired thickness of edge from the grain side of the sole. To this end the edge presser foot, ordinarily provided for the edge or shoulder knife, is yieldingly mounted independently Specification of Letters Patent.

Application filed July 24, 1911.

marginal j In one type of turn shoe soles,

Patented June 25, 1912. Serial No. 640,240.

of the block which carries the shoulder knife so that it will yield to any unevenness of the flesh side of the sole upon which it bears and thus while performing its function does not disturb the position of the shoulder knife relative to the grain side of the sole. On the other hand, the channel presser foot for the channel knife is mounted on the channel block in fixed relation to the channel knife so that if it is raised by an unevenness on the flesh side of the sole, it will raise the channel knife with it and thus preserve an eypn thickness of channel flap as is desira) e.

Means has heretofore been provided in turn channeling machines for lifting the edge or shoulder knife from its operative position at the will of the operator during the feed of the sole through the machine so that the shoulder cut will not extendentirely around the periphery of the sole. In the underwedge type of sole, as will be seen by reference to the patents hereinbefore referred to, the heel thicker than the forepart. If, when the shoulder knife is lifted from operative position at the breast line, the edge presser foot is allowed to remain in contact with the thickened heel end of the sole, its increased pressure upon the sole acts to retard the feed. It is desirable, therefore, that the edge presser foot be lifted from operative position at the same time that the edge or shoulder knife is lifted so that the channel ing around the heel seat may proceed properly. To this end means has been provided in one prior machine, having provision for lifting the edge knife, for simultaneously lifting the edge knife presser foot, so that during the operation on the heel seat both of these devices are in inoperative position.

portion is considerably provide a turn channeling machine which will be eflicient in operating upon soles having the characteristics above described.

In accordance with this object, the invention comprises the provision of improved means in a turn channeling machine for lifting both the edge knife and edge presser foot out of operating position at the will of the operator. In the best form of the invention at present known to the inventor, improved means has been provided, in a ma chine already having provislon for llftlng the edge knife out of operating position, for connecting the independently mounted spring pressededge presser foot to the edge knife lifting means at the will of the operator.

With the above object in view and such others as may hereinafter appear, the invention comprises the features and combinations of parts hereinafter described and particularly pointed out in the appended claims.

This invention, as applied to a turn channeling machine of the type illustrated and described in British Letters Patent No. 3986, dated Feb. 17, 1910, to Alfred J. Boult, is illustrated in the accompanying drawings, in which:

Figure 1 is a rear elevation of the machine; and Fig. 2 is a sectional plan view at line 2-2 Fig. 1.

The machine head having the operating parts for forming the shoulder and channel cuts in the sole comprises, as illustrated in the drawings, a U-frame 1 mounted upon a suitable base of convenient height. The lower arm of the frame carries a sole supporting table 2 mounted upon a vertically movable support ft which slides in a guideway 6 and which may be lowered by means of suitable connections from a treadle (not shown) attached to a treadle rod .7. The upper arm of the frame supports a carrier 8 mounted upon a pair of cone bearings which permit a swinging movement of the carrier in the line of feed. Within the carrier are a pair of Vertical slides 12 and 14 (Fig. 2). The slide 12 carries at its lower end an edge knife block 15 having mounted therein an edge knife, as illustrated a shoulder knife, 16, the distance of said knife above the surface of the sole supporting table 2 being determined by the usual adjusting means at the upper end of the slide bearing upon the carrier. By an adjustment of this means the edge thickness of the sole being operated upon is determined, as such an adjustment varies the distance of the knife 16 from the surface of the table, or, in other words, from the grain side of the sole which rests upon the table. The slide 14 carries at its lower end a channel knife block 19 carrying a channel knife 20. Both of the slides 12 and 14 are spring pressed toward the sole, the slide 12 by means of a comparatively heavy spring, (not shown) and the slide 1 1 by means of a light spring 22. In advance of the channel and edge knives, there is provided a foot retainer,.or hold-down 24 which, by suitable mechanism mounted on the forward end of the driving shaft 25, is given a vertical reciprocatory movement in timed relation to the oscillations of the carrier 8. The carrier 8 is oscillated by means of suitable connections to a cam groove in one face of the cam disk 26 mounted on, and rotated by, the shaft 25. The channel knife 20 is provided with an adjustable channel presser oot 28 which is mounted on. the channel knife block 19 in the usual manner and is preliminarily adjusted so as to determine the depth of cut to be made by the channel knife. The edge knife is provided with an edge presser foot 30 which is adjustably mounted upon a toe 32 projecting from the lower end of a vertically movable slide 34 parallel to the edge knife slide and guided by ways beneath a plate 35 secured to the outer face of the face plate 9 which retains the slides 12 and'l i within the carrier 8. The slide 34 is provided with a lug 36 recessed, as shown in dotted lines Fig. 1, to form a support for a coiled spring 37. The upper end of the spring bears against a plate 38 on the end of a bolt 39 carried by a lug 40 on the face plate 9. The bolt 39 is threaded for adjustment in the lug 40 so that the strength of the coiled spring 37 may be Varied. This adjustment is retained by a lock nut 11. The

edge presser foot 30 is thus carried by a vertically moving slide which is yieldingly supported and which is also mounted independently of the slide 13 which carries the shoulder knife. WVith such a construction the coiled spring 37 will permit the edge presser foot to yield vertically independently of the shoulder knife although the presser foot and knife are both mounted on the oscillating carrier 8. In the operation of the machine the feeding of the sole is accomplished by means of the presser foot gripping the sole and carrying it forward during one stroke of the oscillating carrier 8, the foot retainer 24, at this time being raised from the sole thus leaving it free to be moved. The channel and shoulder cuts are made on the return stroke of the carrier, the foot retainer at this time being down clamping the sole against the work table and holding it from movement, the presser foot at this time merely dragging over the surface of the sole.

All of the parts just described may be, and preferably are, except in one important particular which will presently be pointed out, the same as those illustrated and clescribed in British patent to Alfred J. Boult, hereinbefore referred to, to which patent reference may be had for a full disclosure of the construction and operation of the machine. In that machine the channel knife slide, the edge knife slide, and the edge knife presser foot slide are arranged to slide parallel to each other on the oscilliating carrier with their medial lines in the same vertical plane. Furthermore the edge knife presser foot slide is arranged to slide on the cover plate for the other two slides beneath dove-tail ways in a plate secured to the cover plate. In the machine referred to the spring which bears on the presser foot slide to force the presser foot down on the work is also arranged substantially in the same vertical plane above referred to. It is evident that when the pressure is applied by the work to the presser foot on the end of the long bracket 32 projecting from the bottom of the slide 34: this arrangement of parts produces a lever of the first order so that the slide is tipped about the outside dove-tail way as a fulcrum. This tipping action prevents the desired free vertical movement of the presser foot slide and often results in the slide sticking in the dove-tail ways.

In the illustrated embodiment of the present invention while the edge knife presser foot slide is arranged to slide parallel to the other two slides as in the construction referred to, its position on the cover plate is advanced toward the right of the machine, viewing Fig. 1, so that it overlaps the other two slides. (Fig. 13y so arranging the edge knife presser slide the length of the bracket projecting from the bottom of the slide is reduced and consequently the leverage of the presser foot under the pressure of the work is greatly diminished. Furthermore square ways are provided beneath the plate 35 within which the slide works and this construction materially reduces the sticking tendency above noted. In order to completely overcome any remaining sticking tendency of the presser foot slide as it is raised vertically under the pressure of the work the spring 37 is arranged, as shown in Fig. 1, to bear upon the presser foot slide at a point directly over the outside way be neath the plate which point lies substantially in a vertical plane passing, from front to rear of the machine, through the point of operation of the presser foot.

fulcrum and thus insures its free vertical movement.

As illustrated, but not described in said British patent, the slide 12 has projecting rearwardly from its upper end and passing through a suitable elongated opening in the channel knife slide 14, a pin 15 the underside of which is engaged by the free end of a crank arm 46 mounted upon a horizontal rock shaft at? journaled in the upper arm of the frame 1. The rock shaft also carries a second arm 18 (see dotted lines) from which depends a treadle rod 49 having connected thereto a suitable treadle (not shown).

With the construction hereinbefore de scribed, it is possible to stop the shouldering operation at the will of the operator by pressing the treadle connected to the rod 49 which, by rocking the arm 46, lifts the pin 45 and with it the slide 12 which carries the knife. Owing to the construction and This arrangement effectively counteracts the pressure mounting of the edge presser foot, this part is unaffected by the lifting of the edge knife and will remain in contact with the sole unless means is provided for connecting it to the knife lifting mechanism. Such means will now be described.

In the embodiment of the invention illustrated in the drawings the upper end of the presser foot slide is extended upwardly in the form of an arm 50 terminating in a lug 51 projecting over the pin The lug is split, as shown, and carries a connecting pin 52. The position of the connecting pin 52 in the lug 51 may be adjusted as desired and the adjustment is retained by-the clamping bolt 53. When the connecting pin 52 has been adjusted to the position shown in Fig. 1, it is obvious that an upward pressure upon the pin 45, by means of the crank arm 46 to lift the shoulder knife, will act through the connecting pin to lift the edge presser foot slide and with it the edge presser foot. Thus if the work being operated upon is such that it is desirable to lift the shoulder knife and edge presser foot simultaneously from the work, it is merely necessary to adjust the connecting pin 52 into the position shown in Fig. 1. If, however, the work being operated on is such that it is unnecessary or not desired, to lift the edge presser foot when the shoulder knife is lifted, the connecting pin 52 may be adjusted to a position out of contact with the pin 45 and while in this position, obviously the edge presser foot will be unaffected by an upward move mo ment of the pin 45 in lifting the slmulder knife slide. It should be noted that in the construction described the location of the connecting pin at the upper side of the pin 455, permits the edge presser foot to yield at all times relatively to the shoulder knife and thus properly perform its function while the shoulder cut is being made.

The position of the edge presser foot at the forward side of the shoulder knife is such that it is difficult, when first placing the work in the machine, to properly adjust the two knives for thickness of between substance, by means of the adjustment for this purpose described in said British patent, unless the edge presser foot is lifted from the sole so as to permit the operator to see the relative position of the two knives. To provide means for lifting the edge presser foot at this time without lifting the shoulder knife, the face plate 35 is provided with a bracket 54 and the presser foot slide 34 is provided with a cylindrical nut 55 which projects through an opening 56 in the plate 35 and carries a handle 57 having a screw 58 cotiperating with the steep threads in the cylindrical nut 55. By turning the handle 57 to the left (Fig. 1), the bottom of the screw operates on the bracket 54: and causes the nut to travel on the screw to raise the slide and lift the edge presser foot from the sole while the channel and edge knives remain in cutting position.

In order that both hands of the operative may be free for use in the adjustment of the knives when the presser foot is elevated the machine of the drawings is provided with a friction device which operates to hold the screw and nut from relative rotation under the influence of the spring 37 when the handle 57 is released. This friction device consists of a block 59 provided with a concaved portion 60 of the same radius as the outside of the threads on the screw 58. A portion of one side of the cylindrical nut is cut away and the block 59 is inserted therein as shown in dotted lines, Fig. 2. In order to bind the block 59 on the threads of the screw 58 a clamping nut 62 and a lock nut 63 are threaded on a portion of the block 59. It is desirable that the block 59 yield sufficiently to permit the screw 58 to revolve when the handle 57 is turned and to this end a felt washer 64 is interposed between the clamping nut 62 and the cylindrical nut.

Broadly considered the invention herein set forth is not limited 'to use with the particular type of turn channeling machine hereinbefore described and it should be distinctly understood that, except as specifically defined in the claims, the invention is not limited in scope to use in that particular type of turn channeling machines nor, in fact, to any particular type of turn channeling machine. Furthermore the feature of the invention relating to the novel means for mounting the presser foot, as will readily be understood by those skilled in the art, is not limited in its application solely to use in a machine for channeling turn soles.

The nature and scope of the present invention having been indicated and its preferred embodiment having been specifically de-.

scribed, what is claimed as new, is

1. A channeling machine, having, in com bination, means for supporting and feeding a sole, an edge knife movable toward and from the sole, an edge presser foot movable toward and from the sole independently of the edge knife, means operatively connected to one of said parts for lifting it out of operating position, and a pin for operatively connecting said other part to the lifting means at the will of the operator, substantially as described. V

2. A channeling machine, having, in combination, means for supporting and feeding a sole, two parallel, independently 'mounted spring pressed slides carrying an edge knife and an edge presser foot respectively, means for lifting one of said slides away from the sole, and an adjustable pin carried by the other slide for connecting and disconnecting said slide from said lifting means, substantially as described.

3. A channeling machine, having, in combination, means for supporting and feeding a sole, a slide carrying an edge knife, an edge presser foot carried by an independent, yieldingly supported slide, means for lifting the knife slide to withdraw the knife from the sole, and a pin operatively connecting the presser foot slide to the knife slide to be lifted simultaneously therewith while permitting the presser foot to yield at all times relatively to the knife, substantially as described.

4. A channeling machine, having, in combination, means for supporting and feeding a solo, a slide having an edge knife mounted at its lower end, a second, independently mounted slide carrying an edge presser foot, a pin projecting horizontally from the first slide, means for engaging the under side of said pin and movable to lift the edge knife from the sole, and a vertically arranged pin carried by the second slide adjustable to engage the upper side of the first pin at the will of the operator, thereby causing the foot to be lifted with the knife, substantially'as described.

5. A channeling machine, having, in combination, an edge knife slide, a retaining a plate therefor a presser foot slide mounted to overlap the edge knife slide and slide parallel thereto, upon the retaining plate and a spring arranged to bear upon the presser foo-t slide, the point of application of said spring lying substantially in the vertical plane extending from front to rear of the machine and passing through the point of operation of the presser foot, substantially as described.

6. A channeling machine, having in combination, a channel knife, an edge knife, an independently mounted yielding edge presser foot normally held in contact with the sole,

and a coeperating screw and nut'device for lifting said foot from the sole while the knives remain in cutting position, substantia'lly as described.

' 7. A sole machine, having, in comblnation,

an independently mounted yielding slide, a V presser foot carried thereby normally held in contact with the sole, a screw and nut carried by the slide, means permltting a relative movement of the nut and screw to raise theslide and thus lift the presser foot from g,

the sole, and a friction device tohold the screw and nutfrom relative movement at any desired point of elevation of the presser foot, substantially as'described.

' FREDERIC E. BERTRAND. Witnesses:

J OHN W. CoseRovn, JOHN H. RIGBY.

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

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