US1346275A - Seam-pounding machine - Google Patents

Description

W. C. STEWART.

SEAM POUNDING MACHINE.

APPLICATION nuzn MAYH, 1916.

1 46,275. Pate t d uly 13, 1920.

um'rao STATES WILLIAM C. STEWART, OF SWAMPSCOTI,

PATENT OFFICE.

MASSACHUSETTS, .ASSIGNOR, BY MESNE ASSIGNMENTS, TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEIV JERSEY.

SEAM-POUNDING MACHINE.

Application filed May 11,

To all whom it may concern:

Be it known that I, VVTLLTAM C. STEWART, a subject of the King of England, residing at Swampscott, in the county of Essex and State of hflassachusetts, have invented certain Improvements in Seam-Pounding Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for opcrating upon boots and shoes and is herein illustrated in connection with a machine for pounding the seams, edges, backstays, etc, of the uppers of boots and shoes.

The machine of the present invention is an improvement upon the scam pressing machine shown in United States patent to Hayley, No. 643 155. When the patented machine is used on heavy stock a diliiculty is sometimes experienced in introducing a piece of work between the hammer and anvil. For example it is in some cases desirable to pound the edges of the tops of shoes as a final operation preparatory to packing them. To perform this operation rapidly without opening the shoe, the operator holds the upper edges of the two quarters in alinement. pinching the upper as tightly as possible at the back seam, and presents the shoe.

thus held, to the hammer so that thetwo edges and the fold or crease at the back seam are pounded at a single operation. The general object of the present invention is to facilitate operating upon bulky work such as that which has been referred to above.

According to one feature of the present invention a novel supporting member and an anvil having a common axis are provided with cooperating cam surfaces such that relative angular movement of the member and the anvil about the axis will raise the anvil.

lVith this construction there is no difficulty in presenting a bulky piece of work between the hammer and anvil. At the same time the effective force of the blows of the hammer can be controlled by holding the anvil at a given position so as to provide for work of different thickness.

This and other features of the invention Specification. of Letters Patent.

Patented July 13, 1920. 1916. Serial No. same. V

will be described in connection with an illustrative machine and pointed out in the appended claims. Referring now to the accompanying drawa,

The figure is a side elevation partly in section of a machine in which the present invention is embodied, a part of the frame having been broken away.

The frame 1, the oscillatory'arm 3, the hammer 5, its mounting in the arm, and the means for continuously oscillating the arm about the pivot 7 are similar to the corre sponding elements of the machine of Patent No. 643455 and will not be described further.

Threaded into a split socket in the frame underneath the hammer and held in adjusted position by a pinch-bolt 9 is an anvil supportingmember herein shown as a sleeve 11 having a head upon which are formed a-plurality of flat surfaces one of which is shown at 111 and a plurality of inclined surfaces 211 leading up to said flat surfaces. T he under side of the anvil is provided with similar flat and inclined so that angular movement of the anvil will raise it to the position shown or permit it to descend. The anvil comprises a head 13 having a stem 15 which extends down through the sleeve 11, a cushioning washer 113 and a collar 213, the cam surfaces rer ferred to above being formed on the under side of this last named member. A pin 17 connects the head 13, the washer 113 and the collar 213 so as to cause them to turn together. Fast to the lower end of the stem a 15 is an arm 19 to the outer end of which is pivoted a link 21 adapted to be actuated through a bell. crank lever 23 by a treadle rod 25 and treadle (not shown). A. stop member 27 adjustably clamped to the link 21 is connected to the frame of the machine by a tension spring 29, the spring tending at all times to hold the member 27 against a bar 31 which forms part of the frame of the machine. ber 27 is such that the anvil is normally held in the raised position shown, with the flat surfaces on its under side in contact with the flat surfaces on the anvil supporting member 11.

In operation, power is applied to the masurfaces as shown,

The position of the stop mem-.

chine to oscillate the hammer continuously.

' ters Patent of the United States is:

' anvil is held stationary in raised position When a bulky piece of work such as the two top edges of the quarters is to be operated upon, the tread'le is depressed, whereupon the anvil by its own weight, descends as the inclined cam surfaces slide upon one another. This provides space between the'anvil and hammer to permit presentation of the work, whereupon the treadle is released, 1

and the anvil'rises under the influence of the spring 29. In some cases the anvil may rise at once to the position shown; in others the rise may not be completed until enough b'l'ows" have been struck by the hammer to flatten the work somewhat. It has been found in practice that when. the inclined surfaces of the anvil and anvil support are in contact, an effective pounding may be given to the work, and consequently that the effective force of the blows of' the hammer may becontrolled-by holdingzthe treadle, and thereby the anvil, in different positions. Although the invention has been set forth in connection with a particular machine, it should bcunderstood that the invention is not limited in the scope of its application to the" particular machine which has. been shown and described.

Having thus describedmy invention what I" claim as new, and desire to secure by Let- 1'; A machine'of the class described, having in combination, a hammer, an anvil supporting member rigid withthe frame of the machine, an anvil, said member and anvil having a common axis andbeing provided with cooperating cam surfaces such that relative angular movement" of said anvil and member aboutsaid axis will raise said anvil or permit itgto be lowered, means for normally maintaining an angular relation between the anvil and member such that the and manually controlled means for varying the angular relat1on at any time during the sponding to those of the supporting member, 1

means for normally holding said anvil and member insuch angular position that the fiatsurfaces on said anviland member are in engagement, and manually controlled means for" producing relative angular movement be tween said anvil and'supporting member at any time during the operation of the machine to move said'surfaces out of engagement soas to permit saidanvil'to be lo Wercd.

3; A machine of the class described, having in combination a hammer, an anvil supporting sleeve threaded in the frame of the machine and having cam surfaces formed on its upper end,an anvil having corresponding cam surfaces formed on its under side and provided with a's'tem extending through said sleeve, and means for turningsaid stem.

l. A machine of the class described, having in combination a hammer, an anvil sup- WILLIAM C. STEWART.

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