US2987726A - Heel attaching machines - Google Patents

Description

June 13, 1961 MAwBEY 2,987,726

HEEL ATTACHING MACHINES Filed Oct. 2, 1958 19 Sheets-Sheet 1 E 0 13 K a a 250 ii Inventor Law/"61166 AJau/bey By his Attamey LLJFW June 13, 1961 MAWBEY 2,987,726

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HEEL ATTACHING MACHINES Filed Oct. 2, 1958 19 Sheets-Sheet 19 United States Patent 2,987,726 HEEL A'I'IACHING MACHINES Lawrence Mawbey, Leicester, England, assignor to United Shoe Machinery Corporation, Boston, Mass., at corporation of New Jersey Filed Oct. 2, 1958, Ser. No. 764,858 Claims priority, application Great Britain Oct. 12, 1957 11 Claims. (Cl. 1-95) This invention relates to heel attaching machines and more specifically to machines for attaching wood or plastic heels, for example, to womens shoes by the so-called push-on method disclosed in United States Letters Patent No. 2,722,027, granted November 1, 1955 on an application filed in the names of Cyril H. James et al.

There is disclosed in British Letters Patent No. 767,967, which corresponds in general to United States Letters Patent No. 2,768,379, granted October 30, 1956 on an application filed in my name, a machine for attaching wood heels to shoes, said machine in some respects being adapted to operate upon the push-on heel attaching method which is disclosed in United States Letters Patent No. 2,391,543, granted December 25, 1945 on an application filed in the names of Joseph W. Carr et al. and relates to the attachment of built-up leather or leather board heels to shoes. Built-up leather heels are commonly attached to the heel ends of outsoles of shoes, such heel ends projecting somewhat beyond the sides of the shoe uppers and forming with said uppers well defined and relatively deep rand creases which are utilized to position the rear ends of the shoes in the machine.

A shoe to which a wood heel of the illustrative Louis type, for example, is to be attached does not have a rand crease such as above defined extending around its rear end and consequently the shoe positioning means disclosed in said Patent No. 2,391,543 is not suited for use in the attachment of Louis heels to shoes. Accordingly, the present machine is provided with shoe positioning and clamping means which is different from the shoe positioning and clamping means disclosed in Patent No. 2,391,543 and by the use of Which the operator may readily position in the illustrative machine the heel seat of a shoe which has been fitted for the reception of a Wood heel, the present machine also being provided with locking means which acts to prevent disturbance of the shoe on the jack of the machine through successive portions of a split power cycle of the machine.

The illustrative machine herein disclosed comprises a holder or support for a heel, a support or jack for receiving a shoe to which the heel is to be attached, mechanism for inserting double pointed nails part way into the attaching face of the heel and for bending projecting por- [ions of said nails into parallel relation, means for pricking the heel seat of the shoe, gaging means associated with said pricking means for positioning the shoe on the jack and on said pricking means, clamps movable with and with relation to the jack for securing the shoe against movement on the jack, means for operating the pricking means to form in the heel seat of the shoe holes for receiving the nails projecting from the heel, and means for pressing the heel and the heel seat portion of the shoe together to cause the nails to enter pricked holes in the heel seat of the shoe and to be clenched in said heel seat whereby to cause the heel to be attached to the shoe.

The shoe support or jack of the illustrative machine is movable vertically and a shoe mounted on a last is positioned by the operator on said jack with a last pin of the jack engaging a thimble hole of the last and an abutment face of the jack engaged by the upper face of a back cone of the last, said last pin and abutment face being positioned on the shoe support by gaging means mounted on the pricking means. The heel end portion of the shoe is 2,987,726 Patented June 13, 1961 ice prevented from moving lengthwise laterally oi the shoe I on the shoe support by a pair of rear heel end shoe engaging members or clamps which engage the rear rounded heel end portion of the counter of the shoe, one at each side of the center of the rear portion and a pair of waist clamping members or clamps which secure the shoe in position on the jack by engagement with its waist portion just forward of the heel breast line, the clamps forming part of heel clamping mechanism. The clamps are yieldingly urged into engagement with the shoe and are locked against movement of separation during the pricking of the shoe and the attachment thereto of a heel, and the jack and the shoe clamping mechanism are locked together against relative movement heightwise and lengthwise of the shoe during and between these operations.

The pricking means of the illustrative machine comshoe is pressed and initially positioned by said gages. The

block and the post have slidingly mounted in them a plunger which carries at its upper end a plurality of prickers or awls. The block has pivoted 011 it the abovementioned gages projecting above the upper face of the block, one of the gages, which is bifurcated, being arranged at the rear of the block and being initially adjustable forwardly and rearwardly of the block and the other two gages lying at opposite sides of the block and being engaged by the feather line portion of the shoe at about the heel breast line of the shoe. The two side gages are urged inwardly toward each other and into engagement with the block by a spring connected to them, said gages being geared together for equal and opposite movement. The upper faces of all three gages are inclined inwardly as they extend toward the block and when a shoe, positioned in the shoe support but not clamped therein, is moved down into engagement with the upper face of the block, the heel end portion of the shoe is positioned forwardly and rearwardly by the rear gage and laterally by the side gages. Indicating means, readily recognizable by the operator, is provided to show whether or not the shoe is properly positioned on the block. The shoe is clamped in the shoe support while it is pricked during the first part of the cycle of the machine and remains so clamped until the heel has been attached to it during the second part of the cycle of the machine.

In the illustrative machine hereinafter described, the

heel support and a post of the shoe pricking means are mounted on a carrier which is movable widthwise of the machine between two different operating positions. The shoe support lies to the right of the machine, as viewed from the front, and the nail inserting mechanism lies to the left and when the heel support is beneath the nail inserting mechanism the pricking means is located beneath the shoe support. When the shoe support and the prickmg means are in this position the machine is power operated through the first part of its split cycle, initiated by depressing a treadle, causing the nails to be driven part way into the heel in the heel holder or support and pro ecting portions of the nails to be bent into parallel relation at right angles to the rim of the attaching face of the heel, and also causing the heel seat portion of the shoe on the heel support to be pricked and the heel support to be lowered to withdraw the projecting por--

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