US2375217A - Welt beating machine - Google Patents

Description

y 1945- J. P. FREDERICKSENY 2,3

WELT BEATING MACHINE Filed April 4, 1944 James PFreder/bksen- Patented May 8, 1945 UNITED STATES WELT BEATIN G MACHINE James P. Frcdericksen, Braintree, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. J a corporation of New Jersey Application April 4, 1944, Serial No. 529,461

12 Claims. (01. 12-672) This invention relates to welt beating machines, and is herein illustrated as embodied in a machine of the type disclosed in United States Letters Patent No. 875,171, granted December 31, 1907, upon application filed in the name of J. B. Hadaway, and adapted for beating out welts of lasted shoes.

Welt beating machines of the type aforementioned which have gone into extensive commer cial use commonly employ slashing mechanism in the form of a knife,- which is used to slash the welt as the machine operates upon the welt along the toe portion of the shoe, the purpose being to cut the material of the welt in order that the welt may be flattened out more readily at the places where it is sharply bent to conform to the curvature of the shoe bottom. It is an object of the present invention to provide an improved welt beating machine, which is adapted to beat out welts along sharply curved portions thereof without the necessity for slashing the welts.

To this end and as shown, the invention provides, in a machine of the type referred to, a work support and'an oscillatory hammer for beating out a welt positioned upon the support, the support having a recess therein, and there being an auxiliary hammer arranged progressively to force marginal portions of the welt into the recess. Preferably and as shown, the first-mentioned hammer has portions adapted to engage and to grip portions of the welt upon opposite sides of the recess and hold such portions in fixed position while the hammer is down upon the work, so that the auxiliary hammer will be effective to stretch the welt between the gripped portions. Preferably also, the recess is of increasing depth and width inwardly of the work support, so that the outer portion of the welt is stretched more than the inner portion thereof with the result that it can readily be flattened out into the plane of the shoe bottom.

These and other features of the invention are illustrated in the accompanying drawing. are described in the following specification, and are pointed out in the claims.

In the drawing,

Fig. 1 is a side view of a portion of a welt beating machine embodying my invention;

Fig. 2 is a front elevation of the work support Fig. 4 is a view in side elevation on an enlarged 55 I scale showing a shoe As shown in Fig. 1, the machine comprises a frame Hl carrying a work support l2 in the form of an anvil arranged to support the welt M of a lastedshoe 16, Figs. 3 and-4, to be operated upon, and an oscillating arm l8 carrying a hammer 2! for beating out the welt, there being an auxiliary hammer '22 carried by the arm for progressively stretching marginal portions of the welt by forcing thematerial of the welt into a recess 24 in the anvil. I

The anvil It has a shank 26 and a raised portion 28 having a flat horizontal work supporting sur face 30 and terminating in a nose portion 32 adapted to enter the welt crease of a shoe to guide it along the support while the welt of the shoe rests upon the supporting surface. The shank 26 is mounted upon. a bracket 34 on the frame If) for adjustment laterally of the hammer and is arranged to be secured in fixed position by a bolt 35 extending through an elongated slot 38 in the bracket and threaded into the shank. As best shown in Figs. 2 and 3, the recess 24 is in the form of a \i-shaped notch, which extends inwardly from a point slightly spaced from the end of the nose portion 32 and increases in width and depth in a direction away from the nose portion.

The arm I8 is mounted upon a pivot 38 and is arranged to be oscillated toward and away from 1e anvil i2 by a power driven eccentric 42. The

nut 56 carried by the reduced upper end of the rod andarranged to engage a washer 53 resting upon the upper end of the collar, thereby to limit downward movement of the hammer under the action of the spring. The lower end of the harm mer is slotted, as shown at 58, Figs. 2 and 3, forming two work-engaging portions 60, which are disposed upon opposite sides of the recess 24 in the anviland operate, upon successive downward movementsof the hammer, to beat down the inseam materials and to flatten the welt on the anvil. During each cycle the portions 6! momentarily clamp the welt down upon the .anvil. The portions 60 of the striking face of the hammer are serrated, as shown at 62, for the into the recess.

hammer for progressively forcing the material of the welt into the recess.

2. A machine for operating upon shoes comprising a work support, a hammer mounted for oscillation relatively to the work support for beating the welt of a shoe, the work support having a recess, projections on the hammer arranged to engage the welt upon opposite sides of the recess to press it against the work support during operation of the hammer, and a second hammer mounted for movement relatively to the tom of the central portion f the recess 24 with which it is alined. Fig. 2 shows the positions of the two hammers when in lowermost position with no work in the machine. Figs. 3 and 4 illustrate how the welt along the toe of a shoe being operated upon isgripped between themain hammer and the anvil with a portion of the Walt forced into the recess. As shown in these figures, the downward movement ofv the hammer 20 has been arrested by engagement with the I work andthe auxiliary hammer 22 has moved below the hammer 28- forcing portions of the welt Preferably,,the position of the auxiliary hammer is adjusted so that it will engage the welt at points adjacent the seam of the shoe to be operated onand outwardly to the edge of the welt, so that the welt will be beaten down to closethe feather on the welt and at the same time so that the marginal portions of the welt are forced into the recess to stretch the same.

In the operation of the machine, when the arm [.8' isv oscillated in a direction toward the anvil, the main hammer 20- flrst engages the welt and inseam materials delivering a blow thereto which tends to flatten them, out, and, while the hammer is down on the work and under the pressure of the spring 48, the auxiliary hammer 22 forces the material of the welt between the portions gripped by the main hammer into the recess to stretch the welt. As the shoe is advanced along the anvil, successive operations of the hammers. serve. progressively to stretch out small marginal portions of the welt, and then to flatten them. Since the face of the auxiliary hammer converges with the bottom of the recess inwardly, of the nose portion of the anvil, progressively greater pressure is applied to the welt outwardly of the seam where, more stretching is required. Furthermore, since the outwardly disposed portions of the welt are forced into the deeper part of the recess 24, such portions are stretched more than those portions which lie closer to the seam of the shoe. The result of this is to stretch the welt so that it will conform closely to the shape of the shoe bottom, and the beating action of the main hammer progressively applied along the stretched portions of the welt results in flattening it until it lies substantially in the plane of the shoe bottom.

The pounding of the auxiliary hammer upon I the material along the seam tends to remove first-mentioned hammer for engaging material positioned upon the anvil over the recess to force the same into the recess thereby to stretch it.

3. A machine for operating upon shoes comprising an anvil having an upwardly disposed work supporting surface and a recess in the surface, a hammer mounted for oscillation relatively to the anvil and having portions for engaging the work upon opposite sides of the recess, and a second hammer mounted for oscillation with the first-mentioned hammer and located between said portions for engaging the work thereby to stretch it.

4. A welt beating machine comprising an anvil having an upwardly disposed work supporting surface terminating in a nose portion adapted to enter the welt crease of a shoe to be operated upon, a V-shaped recess in the work supporting.

of the welt of the shoe positioned upon the anvil,

and an auxiliary hammer fixedly secured to the arm for forcing marginal portions of the welt into the recess to stretch the same while the first-mentioned hammer is down upon the work.

5. A welt beating machine comprising an oscillatory arm, a hammer yieldably mounted upon the arm, .the hammer having a slot therein extending heightwise thereof, an auxiliary hammer extendinginto the slot and fixedly secured to the arm, and an anvil having a work supporting surface extending adjacent to the first-mentioned hammer and having arecess therein in alinement with the auxiliary hammer, the first-mentioned hammer having portions for gripping the work to be operated upon on opposite sides of the recess and the auxiliary hammer having a work engaging portion for forcing into the recess material between the portions gripped by the firstmentioned hammer.

6. A welt beating machine comprising an anvil having an upwardly disposed work supporting surface, a recess in the surface, an arm arranged in the arm and having work engaging portions extending on opposite. sides of the recess, and an auxiliary hammer mounted upon the arm and extending in alinement with the recess for forcing portions of the work being operated upon into the recess.

7. A welt beating machine comprising an anvil having a work supporting surface, a recess in the surface, an arm mounted for oscillationtoward and away from the anvil, a hammer yieldably mounted in the arm forengaging work positioned upon the anvil, the hammer having a slot extending heightwise thereof and in alinement with the recess, and an auxiliary hammer fixedly secured to the arm and located in the slot. i

8. A welt beating machine comprising, an anvil having a work supporting surface, a recess in the surface, an arm mounted for oscillation toward and away from the anvil, a hammer yieldably mounted in the arm for engaging work positioned upon the anvil, the hammer having a slot extending heightwise thereof and in alinement with the recess, and an auxiliary hammer fixedly secured to the arm and located in the slot, the auxiliary hammer having awork engaging portion extending at an inclination to the work supporting surface.

9. A welt beating machine comprising-an anvil having a work supporting surface, a -recess in the surface, an arm mounted for oscillation tomeans mounting the auxiliary hammer for ad-' justment laterally of the first-mentioned hammer.

10. A welt beating machine comprising an anvil, an arm arranged for oscillation toward and away from the anvil, the anvil having a recess therein, a hammer yieldably mounted in the arm and having work en aging portions extending upon opposite sides of the recess, and an auxiliary hammer fixedly secured to the arm and having a work engagingportion in alinement with the recess and converging with the bottom of the recess.

11. A welt beating machine comprising an anvil, an arm mounted for movement toward and away from the anvil, a hammer yieldably mounted upon the arm, a recess in the anvil, said hammer having work engaging portions extending upon opposite sides of the recess, and an auxiliary hammer fixedly secured to the arm and positioned between-said portions in alinement with the recess.

12. A welt beating machine comprising an anvil, an arm mounted for movement toward and away from the anvil, a'hammer yieldably mount-- ed upon the arm, a recess inthe anvil, said hammer having Work engaging portions extending upon opposite sides of the recess, the work engaging portions having serrations, and an auxiliary hammer fixedly secured to the arm and positioned between said portions in alinement with the recess. i

JAMES P. FREDERICKSEN.

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