US2151498A - Edge-setting machine - Google Patents

Description

March 21, 1939. R. IBOYSON ET AL 2,151,498

EDGE-SETTING MAC HINE1 Filed July 23, 1936 2 Sheets-Sheet l Z8 ,Iwvewiomr 3 31 W 6. W

Patented Mar. 21, 1939 UNITED STATES EDGE- SETTING MACHINE E. Richard Boyson, Lynn, and B. Herbert Boyson, West Boylston, Mass.

Application July 23, 1936, Serial No. 92,120

2 Claims.

Our present invention relates to machinery for use in the manufacture of boots and shoes, and more particularly to a novel and improved edge setting machine adapted to set or burnish edge portions of the soles of boots and shoes.

Heretofore, it has been customary to provide edge setting machines having rapidly rotating, or oscillating, edge setting tools which moved in a fixed path, against which tool the operator holding the shoe must press the sole edge and move the shoe around from one side of the heel breast thru the forepart, toe portion, and back to the opposite edge of the heel breast, thus completing the edge setting operation.

As the sole edge is of uneven contour, particularly where the shank portion of the shoe is concerned and particularly, also, in womens highheeled shoes where a high arch is designed on the shoe, considerable skill and a high degree of pressure is necessary on the part of the operator to hold the sole edge into contact with the rapidly oscillating or rotating edge-setting tool during this entire operation. -Furthermore, great difficulty has been experienced heretofore in so holding and conforming the uneven sole edge of the shoe itself to the fixed path of movement of the setting tool as the operator is forcing the sole edge with great pressure against the tool and is operating under tension at all times, and a slight false movement or displacement will mar and injure the shoe upper and even ruin the shoe, as. well as involve danger to the operator. Our present invention is directed to overcome the difficulties above noted, and instead of having the operator force the uneven and varying contour of the shoe into the fixed path of the edge tool, we provide a construction wherein the edging tool will automatically vary its path to follow the uneven contour of the sole edge, at least to such a considerable extent as to eliminate the difficulties above noted where a fixed path of movement of the edge tool is involved.

In carrying out our present invention we provide means automatically actuated, whereby the edge setting tool, preferably of the oscillating type, is freely movable to vary the path of movement of the oscillations and, hence, to follow the uneven contour of the sole edge held against it. This improved method not only insures a more even setting of the edge but simplifies the strain and Work on the operator, as instead of being compelled to follow the fixed path of movement of the edge setting tool and while holding the shoe under great strain and pressure against it, the tool follows the more-or-less wavy path of the shoe sole and much less pressure is needed by the operator in completing the edge setting operation.

It will be appreciated by those skilled in the art that the edge setting tool is necessarily guided by a very small flange only slightly overlapping the sole edge and, therefore, the importance of our improvement which eliminates the danger of the flange and tool slipping into its guiding contact with the sole, resulting in injury to the shoe, or operator, or both, is obvious.

A still further feature of our invention and which is advantageously applicable either to our present improved type of edge setting machine, or to any of the present Well-known standard types of oscillating edge setting machines, consists in our novel provision of means for moving the edge setter in an eccentric are relatively with the work. This feature enables us toperform the edge-setting action in a much smoother and less bumpy, jumpy, or hammerlike action, whereas in former machines the edge setter was moved in an arc at an equal distance right and left of the point of contact of the sole edge with the edge setting tool.

In such prior machines, with the operator holding the sole edge with more strain and force against the edge setting tool, the oscillating action of the tool caused more vibration to the operator. By means of our eccentric movement this vibration is largely and almost entirely eliminated, the edge burnisher moving almost entirely in an are from the point of contact with the work to one side instead of right and left of the point of contact, as formerly.

This feature is of the greatest importance as it enables the burnishing to be effected with relatively slight strain on the operator, eliminating the vibration and pressure heretofore required, and also permitting the edge setter to run at a lower speed with equal eificiency, thus still further eliminating vibration and strain on the operator.

We accomplish this desirable result by an eccentric mounting of the oscillating tool-carrier, as will be further explained, and we believe this feature to be distinctly new in this art and, therefore, wish to claim same herein broadly as applied to any oscillating edge setting machine.

Also our improvements which facilitates the edge setting operation with less strain and fatigue on the part of the operator is of the greatest importance in this art.

In carrying out our invention we provide means automatically for the free-following action of the edge setting tool during the continuous highspeed oscillations of the same so that it will readily follow the uneven contours presented by a shoe sole. We may utilize either spring tension permitting this free-following movement, or gravity, as may be desired, both forms being herein illustrated.

Referring to the drawings wherein we have illustrated preferred embodiments of our improved edge-setting machine,

Fig. 1 is a front view of the machine embodying our improvements;

Fig. 2 is a cross-sectional view on the line 2-2 of Fig. 1;

Fig. 3 is a fragmentary view illustrating the free-following movement of the edge setting tool during the edge setting operation, and

Fig. 4 is a front View and Fig. 5 is a side view of a modification illustrating the spring tension means.

Fig. 6 is a detailed side view of the tool carrier, looking from the left of Fig. 1.

Referring to the drawings wherein we have illustrated our present improved machine as an apparatus suitable for attachment to a bench or other support 2-2 comprises leg's secured by bolts 33 to the bench I, which legs have forwardly extending fianges 5--5 supporting a front plate l0 and a rearwardly extending plate |2 in which bearings M for a shaft l5, carrying a pulley l8, are arranged, said plates l9 and I2 being set at an angle, as shown in Figs. 2 and 3, to secure the benefit of gravity on the sole edging tool 29, which is mounted on a carrier 25, as will be explained.

Secured to the plate In is a projecting stud 2| which constitutes a pivot for the oscillating tool carrier 25, and which stud is also utilized to secure the finger-gripping member 22 by a pin 23, combining with a bolt 26 to hold the member 22 rigidly on the front plate IE1. A finger grip 28 attached by a threaded screw 29 to the lower part of the member 22 is also provided,

as is usual, the operator grasping the grip 28 with the finger, or fingers, of one hand to steady his grip upon the shoe 39 as it is held with the sole edge 3| in contact against the edge setting tool 20.

The edge setting tool is arranged for quick attachment and detachment by fitting the same to a shouldered portion 24 of the lower part of the carrier and loosening or tightening a socket screw 33, as clearly shown in Figs. 1, 2, and 3.

In order to oscillate the carrier 25 on the stud 2| we provide a forked portion in the upper part to engage a stud 36, which latter extends thru a recess 31 in the plate l0 and is fitted on an oscillating lever 38, which lever is adapted to oscillate on a pivot pin 40, and with the upper part also forked as shown at 6| to engage an eccentric 44 on the shaft l5. The pivot is conveniently secured to the plate 45 by having its inner end threaded and shouldered to receive a retaining nut 42.

In order to hold the pivot pin 48 in rigid and adjusted position and also affording a further bearing for the shaft I5, we provide an inner plate 45 secured by brackets 58 to the rear frame i2, with a spacing collar 5? encircling the pivot member iii to appropriately space these parts and hold the same with the eccentric 44, which latter has a hub receiving a pin 48 thru the same to key it with the shaft l5.

As thus described it will be seen that the tool carrier 25 rests at an angle against the plate H) but is freely slidable laterally of its line of oscillation on the stud 2|, thus enabling it to lift from the plate In and freely follow any unevenness or part of the contour of the sole edge 3| as the operator moves the forepart around and in contact with the edge setting tool 20, and particularly when it comes to the shank and arch portions, the edge setter and its carrier continually following the sole edge during its oscillating in the operation.

Thus, we have provided novel, efficient, and simple means to enable an edge setter to follow the contour of the shoe sole edge while held in the operators hands instead of as previously, requiring the operator to make the shoe follow the fixed path of the edge setter, thus greatly improving the edge setting operation, decreasing the strain and labor of the operator, insuring longer and continuous uniformity of the operators work, and eliminating the principal danger of having the sole edge forced off the edge setting tool, to the consequent injury to both the shoe and the operators hands.

In the modification shown in Figs. 4 and 5, identical construction is utilized so far as the supporting member and oscillating means are concerned, but in this form we show the face plate vertically positioned and consequently with the oscillating carrier 25 vertically positioned, to which a different form of edge setting tool, viz., a shank iron 50 is attached. In this modified form we may utilize the pivotal stud corresponding to 2| in the previous form, and shown as 5| in Fig. 5, as the means to carry a spring normally pressing against the carrier 25 but permitting free following and yielding of the carrier to allow the tool to follow the shoe sole edge contour.

For this purpose we form the pivotal stud 5| for the tool carrier 25 of suflicient length to have a threaded portion on the outer end and to receive thereon a threaded nut 52 with a flange or washer 53 on the inner side of said nut bearing against an encircling spring 55, which spring has the opposite end bearing against the carrier 25, as clearly shown in Fig. 5.

The spring 55 is of relatively light tension to permit the carrier 25 to compress the same as it follows the sole edge and gives the free following capacity desired, to the extent as shown in the dotted lines as 60.

It will thus be seen that in both forms of our present invention we have provided means enabling the edge setting tool to follow automatically any unevenness in the sole edge of the shoe being operated upon as well as facilitating the edge setting operation in the shank portion, particularly where high arches are involved.

We find that by our novel method of having the edge setting tool mounted for movement transversely of the direction of feed of the sole edge that less strength is required by the operator to hold the sole edge in guiding contact with the said tool and, if desired, a lower speed of operation of the tool can be utilized advantageously,

Also, our eccentric mounting of the edge carrier 25 on the stud 2| gives the oscillations of the edge setter substantially from the lowest point of contact on the sole edge 3| entirely to one side, viz., to the left, viewed in Fig. 1, thus providing a smooth and continuous arc in contact with the sole edge, producing an even rocking action from the extreme point of contact off to one side and then back instead of formerly where the sole edge rocked to one side up to a high point and then down and reverse, producing the hammering or jumpy effect, as well as the objectionable vibration which we have eliminated.

This is a most important feature and, preferably, we also form the surface of the edge setting tool itself in an appropriate arc to cooperate with the eccentric mounting of the carrier.

We claim:

1. An edge-setting tool of the kind described, including a carrier for said tool mounted on a pivot, said carrier normally resting by gravity on said pivot, means to oscillate said carrier about said pivot with provision for said carrier to lift against its Weight lengthwise of said pivot during the oscillations, whereby said tool can follow an undulating contour of the sole edge during the edge-setting operation.

2. In a device of the kind described, a mounting for an edge-setting tool, comprising a car rier for said tool mounted to oscillate on a pivot at an angle relatively with the vertical plane, said pivot being positioned perpendicular to the line of oscillations of the carrier, and constructed and arranged whereby the carrier will rest by gravity at the lower end of the pivot and allowing the carrier to lift against its weight during the edge-setting operation.

B. RICHARD BOYSON. B. HERBERT BOYSON.

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