US1998484A - Apparatus for marking shoe bottoms - Google Patents

Description

April 23,1935; w,- c, BAUER 1,998,484

APPARATUS FOR MARKING SHOE BOTTOMS Filed March 26, 1951 2 Sheets-Sheet 1 mm {a VE/V 70R April 23, 1935. w. c. BAXTER Y APPARATUS FOR MARKING SHOE BOTTOMS 2 Sheets-She et 2 //\/\/E/\/TUH Filed March 26, 1931 I ll-Il l-I'l Patented Apr. 23, 1935 UNITED STATES PATENT OFFICE APPARATUS FOR MARKING SHOEBOTTOMS William C. Baxter, lieverly; Mass, assignolt to United Shoe Machinery Corporation, Paterson,

N. J., a corporation of New Jersey Application-March. 26, 1931,. SeriatNo; 525,488

'3 Claims. (.01.. 33-4) This invention relates .to improvements. in apparatus for markingshoe bottoms.

In the manufacture ofboots and shoes such, for example, as those inwhich an outsole issecured to a boot or shoe by means of cement,

it is desirable to: roughen that, portion of the upper which overlies the insole --on the shoe. bottom to insure adhesion between the overlying portion of the upper and the cement. At certain portions of the shoe the curve of the upper merges gradually with the'bottom of the shoe, leaving no definite line. to indicate the junction of the shoe bottom and the sides of the upper adjacent thereto. The roughing operation ordinarily is performed on the shoebottom by a skilled operator who must depend upon his eye.

to determine the limits of the areas to be buffed. If the bufied or. roughened area extendsbeyond the area of the shoe bottom which contactswith the outsole, the appearance of the finished shoe will be damaged because thev roughing operation removes the finish on the surfaces on which the operation takes place- On the other hand, if the roughened area does not extend far enough, the crease between the projecting margin of'the outsole and the adjacent portion of the upper will not be closed by the sole attaching operation, thereby weakening, the attachment of the sole to the upper in the finished shoe.

In view of the foregoing, an object. of this invention is to provide an'apparatus to serve as. an aid in marking shoe bottoms to form a guideline which will define the, limits of the area of the shoe bottom to be buffed. In accordance with this object I have provided a novel templet having means for positioning it in proper relation to the shoe bottom. In the illustrated apparatus the templet comprises a body portion which is shaped to coincide with substantially the entire contour of the shoe bottom andis provided at its heel and toe ends with spring clips which engage the upper of the shoe.

During the sole marking operation it is desirable that the shoe be held against movement to prevent slipping of the marking tool and possible displacement of the templet. With this in view the lasted shoe may be held by a support which willengage the shoe upper and hold the shoe securely in position on the support by friction between the upper and the support while the bottom of the shoe is marked. Preferably, and as illustrated, the support has converging side walls forming a cavity or recess in which a lasted shoe is supported in inverted position. The support disclosed herein comprises a cradle having converging side walls which are covered'with a resilient material, such as felt, toprevent injury to the upper of the lasted 'shoe and to hold the lasted shoe securely in position on the support by friction between the upper and theresilient means. v V

Viflth the foregoing object in view, the invention will now be described with reference to the accompanying drawings and pointed out in the claims. y

In the drawings,

Fig. 1 is a perspective view illustrating the marking of a shoe bottom withv the aid of apparatus embodyingthe present invention; Fig. 2 is a view in cross section taken along the line 11-11 of Fig. 1;

Fig. 3 is a detail view of the templ'et shown in Fig; 1; and 7 Fig; 4 is a perspective view of ashoe upon which a guide line has been made.

As illustrated herein a base [0- is provided with holes through which screws may be passed to secure the base to a bench or other suitable support. Pivotally secured to the base I!) is a work support or cradle M which is reduced at its lower end to form a post IS. The lower end of the post I6 is provided with a bushing 20 into which extends the upper end of a flanged pin 18. The lower end of the pin f8 fits into a hole in the base [0, the flange It on the pin fitting into a correspending-"recess in the base. The pin t8 andthe bushing 20- form a pivot connection between the work support H- and the base lflwhich facilitates operation on a shoe carried by the support. By

rotating the support the shoe may be located in a position most convenient for the operator.

The work support or cradle l4 may be made of any stable material such as wood or of. metal and may be shaped by molding or by any other suitable process. 'As best shown in Fig. 2, the walls 23 of the recess 22 converge downwardly to form a cavity or recess 22 which is substantially wedge-shaped in transverse section. This recess is made of such a size that shoes of varying sizes and styles may readily be supported therein. The top of the support I is cut away along a re-entrant curve to permit ready access to the shank portions of shoes of different sizes. The walls 23 of the recess22 are lined with a layer of felt 26 or any other suitable resilient material to prevent injury to the upper of a shoe 24 placed in the recess and also to hold the shoe more rigidly in. position because of the friction between the shoe and the felt layer. To insure that the line indicating the location of the edge of the insole will be properly located, a templet 28 is provided which is shaped to coincide with the contour of the shoe bottom. The templet 28 is made slightly smaller than the shoe bottom to allow for the width of a tool 36 which is drawn around the edge of the templet to mark the line 38 on the shoe bottom. The templet 28 is provided at its heel and toe ends with spring clips 30 and 32 respectively whichengage the sides'of the shoe upper and locate the templet properly with respect to the shoe bottom. The templet is also provided with a stiffening or reinforcing strip 34 which extends along the shank portion ofthe templet and insures that thetemplet 28 will hold its shape to coincide with the contour of the shoe bottom. i

As shown in Fig. 1 the shoe 24 on the last 2'! is placed bottom side up in the recess 22 and is pressed downwardly into the recess to wedge the shoe against the walls 23. The templet 28 is then placed in position on the shoe bottom with the clips 30 and, 32 engaging the shoe upper at its heel and toe ends. Since the portions of the shoe between the clips 30, 32 are wider than the portions which are engaged by the ,clips, the templet is held against longitudinal displacement and transverse displacement isprevented by the pressure of the clips against opposite sides of the shoe. After the templet .hasbeen positioned the operator presses against the templet at the shank and forepart with one hand and with a marking tool 36 in the other handggforms a line 3801; that portion of the upper which overlies the insole. The marking tool may be in the form of a marking wheel, as illustrated, or it maybe in the form of a hand-grooving tool which cuts a slight channel in the work.

While it is desirable to form a guide line entirely aroundthe shoe bottomunder certain'conditions, it may be desirable to mark only at the shank portion of the shoe,bottom. The portion of the upper to be marked extends to, approximately the edge of the insole which is the same size and shape as the lastbottom. The limits of the roughingoperation can theoretically be determined by the line which indicates the boundaries of the last bottom; As a practical matter, the line indicating the boundary of the last bottom cannot bedetermined accurately or with any degree of certainty when an upperhas been lasted over the insole. At the forepartof the shoe there is a line, indicating the junction of the sides of the shoe with the forepart of the, shoe bottom anda skilled operator may utilize this line with reasonable accuracy as a gage for the roughing operation. At the shank portion of the shoe, however, the curve of the sides of the upper adjacent to the shank portion merges gradually with the shoe bottom making no definite line to indicate the junction of the shank portion of the shoe bottom and the sides of the upper adjacent thereto. It is. desirable, therefore, that the shoe bottom be marked at least along the shank portion and this may be accomplished by the use of a templet such as illustrated in Fig. 3, or the ternplet may extend only to approximately the ball line of the shoe bottom.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

ll. A templet for use in marking shoe bottoms having a body portion constructed and arranged to coincide substantially with the contour of the shoe bottom, means secured to the shank portion of the templet and constructed and arranged to maintain the shape of the body portion so that it will coincide substantially with the contour of the shoe bottom, and a pair of spring clips secured adjacentto the ends of the body portion of the templet to position the templet on the shoe bottom.

2. A, templet for-use in marking shoe bottoms having a body portion formed and arranged to conform substantiallyto the curvature and outline of the shank portion of the insole of a shoe with which the templet is to be used, and means carried by thetempletfor temporarily securing the templet to the bottom of a lasted shoe whereby the edges of thetemplet may be used to guide atool by'which the outer boundary of thearea to be roughed may 'be marked. on the. overlasted margin of the shoe upper.

3. A templet for use in marking shoe bottoms having a body portion formed and arranged to conform substantially to the curvature and outline of the shank portion and forepart of the insole ,of a shoe with which the templet-is to be used, and spring clips carried by the templet and constructed and arranged temporarily to secure the templet to the bottom of a lasted shoe whereby the edges of the templet will be correctly positioned to guide a tool by which the outer boundary of the area to be roughed may be marked on the 'overlasted margin of the shoe upper. 1

WILLIAM C. BAXTER.

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