US1724295A - Nebsrg - Google Patents

Description

Aug. 13, 1929- A. LEVIN 1,724,295

LASTING MACHINE FOR S HOE WEAR Filed Jan. 6, 1926 2 Sheets-Sheet frwemor. Axel Louis Levi/z er v Hf/orn e Y.

Aug. 13, 1929. A. LEVIN LASTING MACHINE FOR SHOE WEAR 2 Sheets-Sheet 2 Filed Jan. 6, 1926 v frwadbr. flxe/ Louis Levin. per

Patented Aug. 13, 1929.

UNITED STATES.

PATENT OFFICE.

AXEL LOUIS LEVIN, OF COPENHAGEN, DENMARK; K. I. THOMSEN AND ERLING RON- NEBEBG, EXECUTOES 0F SAID AXEL L. LEVIN, DECEASED, ASSIGNORS 'I'O AKTIE- SELSKABET MASKINKOMPAGNIET, OF COPENHAGEN, DENMARK, A CORPORATION OF DENMARK.

LAS'IING MACHINE FOE SHOE WEAR.

Application filed January 6, 1926, Serial No. 79,676, and in Denmark December 4, 1925.

The common lasting machines employ pegs for assembling the inner soles of shoes or boots to the uppers, but in recent times it has more and more become customary to employ glue for such assembling, and to, thereafter, glue, sew or in some other manner attach the outer sole to the inner sole.

At the present time the gluing operation is performed by providing the inner sole, lining and upper with glue, pressing the same together, pulling the lining and upper over the last and onto the sole, and thereupon hammering the glued joint together.

It is impossible to imitate this operation by mechanical. means, and it has therefore been proposed to employ a common tong last ing machine, in which the hammering which is required for causing the glue to hold, is produced by the pegs of the lasting machine being hammered down more or less, whereupon they are removed when the glue has v dried. I

Although this operation is considerably faster than hand. lasting, it has the disadvantage that all pegs which have been hammered in, must be pulled out, before the outer sole can be applied. A further disadvantage of this operation is that the pressure which it is necessary to apply to obtain a reliable glued joint can only be applied between the two surfaces to be glued at a point adjacent to the pegs and therefore the gluing is effective in these places only.

It is obviously necessary that the surfaces to be glued should, in order that a reliable Q fluedv joint be obtained be hammered or pressed together over the whole surface to be glued, and therefore it is the object of the present invention to perform such. mechani cal hammering or pressing after the upper has in known manner, by the machine tong or the pusher been drawn tightly over the last. By means of the present invention, therefore, it is obvious that the glued surfaces are pressed together in the same manner as with hand pegging. "When the ceinenting process is used in place of the pegging methodheretofore used, no pegs or other mechanical fastening devices are em ployed although the pegging machine er its equivalent is employed to obtain a good bond between the elements employed in building the shoe.

The invention furthermore refers to a ma chine for performing this operation. It is possible by a very simple change over to have both methods performed by the same machine.

The invention is illustrated in the accompanying drawings, all parts being omitted which. are not absolutely necessary for understanding the following description, it being understood that the machine is fitted with all members belonging to an ordinary lasting machine, such as one or several containers, passages and so on. Reference is hereby made to the patent to Ladd and Mc- Feely, No. 584,744, dated June 15, 1897, for a disclosure of the type of machine to which my present invention hasbeen applied.

In the drawings Fig. 1 is a perspective view of the lasting machine.

Fig.2 is a side elevation of the hammer member and of the device for changing from peg lasting to glue lasting. 7

3 is a top plan view of the changing device and the hammer member. v

Fig. 4 is a perspective view showing the changing device on a somewhat smaller scale.

In the drawings 1 is the main. shaft which operates the hammer by means of a cam, not shown in the drawing. From this cam a hammer rod 2 proceeds to the cylindrical hammer 3, which passes through a plate 4 which, in known manner is displaceable in a horizontal direction. This pusher plate t is known from the common lasting machines,

and the parts for operating it form, no part of the present invention.

Beneath this pusher plate 4 is situated a second plate 5 (shown in top view by dotted lines in Fig. 3, and in sideview in Fig. 2). The plate 5 is fitted to a slide 6 which can be reciprocated in a horizontal directionin ways on the plate 4. The members for moving the slide 6 are clearly shown in Fig. 3. As a rule the slide is held withdrawn (to iheright the figure) by of a coiled ti a trip spring 75 To the'slide is 8;, pjivoted on a pin 9. This trip 8 cooperates with a spring pawl 10 fitted to the plate 4 and under action of a spring 11. The free end of the pawl engages in a notch 12 in the slide 6 and cooperates in this position with the inner end of the trip 8. The outer end of the trip 8 cooperates with a lever 13 fitted to a vertical shaft 14, bearing a gear wheel 15 (see also Fig. 4:). This gear wheel 15 engages with a toothed sector 16 fitted to a shaft 18. Formed integral with the sector 16 is a handle 17. By turning this handle 17 the trip lever 13 is swung to the right, Fig. 3, and thereby forces the outer end of the trip 8 to the right against the action of the spring 19. The inner end of the trip thereby forces the pawl 10 inwardly against the action of spring 11 so that the pawl 10 is disengaged from the notch 12 in the slide 6 and allows the latter and the tongue 5 to be drawn back by spring 7 The plate 5 will thereby follow the movement of the pusher 1, but will, relatively thereto, assume two positions, namely a withdrawn position in which it is ineffective, as the outer end of the plate 5 is withdrawn clear of the hammer 3. Besides this the plate 5 has an operative position as shown in Figs. 2 and 3. In this position the plate 5 which, preferably is a resilient steel plate, lies immediately beneath the hammer 3 as shown in Figs. 2 and 3, so that the blows of the hammer are received by the tongue 5 and are transmitted by the same to the material. This tongue is employed when the machine shall peg with gluing, as the lasting then proceeds in such a manner that the usual machine tong draws the upper over the last. Immediately after the tong has gripped the upper and has drawn it forward, the tongue 5 is, together with the slide 6 and the pusher plate 4, moved to the right, Fig. 2, and thereby smoothens the upper over the last. Immediately after, the hammer operates and its blow is transmitted to the tongue 5, which transmits the blow to the glued portion immediately below the tongue.

As has been stated above, the sector 16 is provided with a handle 17 and which handle through the sector 16 controls the gear 15 and, therefore, the trip lever 13. By proper manipulation, therefore, of the handle 17, the trip lever 13 is thrown out of any possible engagement with the trip 8. When this occurs the slide 5 will be carried forward by the slide 6 to the full extent of the travel of such slide or into the position shown in Figs. 2 and 3, and therefore, such slide 5 will be in the line of engagement with the cylindrical hammer 3 and no peg can possibly be brought into position to be engaged by such hammer.

the operator will, by proper manipulation of the handle 17 again bring the trip lever '13 into position to engage with the trip 8 and, therefore, under such circumstances, the plate 5 will be stopped in its forward movement just short of the position indicated in Figs. 2 and 3 or into position to drop a peg into the path of movement of the cylindrical hammer 3. This mechanism, therefore, not only cuts off the supply of peg or tacks, but also provides for the advancement of the plate 5 into operative position.

In place of the tongue described any other suitable member may be employed.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

In a lasting machine having in combination a pusher, a resilient tongue or plate associated therewith and movable into engagement with the upper leather of a shoe to force such leather into engagement with the insole and to exert a smoothing action on the upper in its movement with the pusher, whereby the upper and insole may be lasted together by means of adhesive, and a hammer associated with the pusher and with the resilient plate, and means for imparting to the hammer a reciprocating motion into and out of engagement with the resilient plate, whereby blows imparted to the plate are distributed over a relatively large area of the upper leather.

In testimony whereof I afiix my signature.

AXEL LOUIS LEVIN.

hen it is desued to utilize the machine for driving pegs,

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