US2042512A - Last - Google Patents

Description

M. CUOZZO June 2, 1936.

LAST

Filed July 16, 1935 Patented .lune v2, i 1936 PATENT OFFICE LAST Michele Cuozzo, Lynn, Mass., assigner to United v Shoe Machinery Corporation, Paterson, N. J.,

a corporation of New Jersey Application July 16, 1935, Serial No. v31,7647

4 Claims.

My invention relates to lasts for use in connection with the attachment of heels to shoes, especially when the attachment is to be by such fastenings as screws.

In an application Vfor improvements in Methods of and apparatusv for attaching shoe heels, led in my name in the United States Patent Office on January 10, 1934, and bearing the Serial No. 706,000, is disclosed a last in which on abutmentplate or like member is mounted at the heel-seatportion thereof for movement through connections extending to the top of the last-cone for manipulation by the operator. By this actuation, the member may be caused to assume positions either in which the head of a fastening, presented to an opening in the plate through a passage in the last, is retained so force may be applied to said fastening to draw adhesive-coated surfaces of a heel and heel-seat of a shoe together, or the head allowed to pass through the plate-opening and the fastening to be set in place to become a permanent securing element in the shoe. An object of the present invention is to simplify such an organization while retaining its full effectiveness. To this end, the abutment member is freed from external connections and is movable under the inuence of gravity into and out of position for engagement with a fastening introduced through the last-passage. It is, consequently, only necessary for the operator to inoline the last in opposite directions to obtain the respective registering relations of two portions of the 'opening withV the passage. Preferably, the abutment member is of generally rectangular form, being both guided and limited as to its eX- tremes of movement by engagement of its edges with the walls of a recess in which it is movable upon the last.

In the accompanying drawing, one of the various forms Which my invention may assume is illustrated,

Fig. 1 being a vertical section through that portion of a last with which this invention is particularly concerned, the abutment-plate being in its fastening-passing position;

Fig 2, a similar View with the plate in its fastening-retaining position;

Figs. 3 and 4, bottom plan views corresponding to Figs. 1 and 2, respectively, but with the clinching plate of the last removed, While Fig. 5 is a perspective View of the abutmentplate.

At I0 appears the heel-portion of a last-body, through the cone of which passes vertically a passage I2, which may be furnished by the usual spindle-hole. 'Ihis spindle-hole, however, must be of sufcient diameter to permit the passage of the heads of the heel-securing screws, if they are to be utilized, and of the tools which are to prepare the work to receive them. Set in the heel-seat-surface of the last is a metal clinching plate Ill secured in place by screws I6. In the body of the last is a relatively shallow recess II, preferably of rectangular form and having its upper wall I 8 substantially parallel to the opposed surface of the p'late Ill. The parallel side Walls 2), 20 extend longitudinally of the last. The parallel Walls 22, 22 at the ends of the recess are shown as of less length than the sides. Arranged to slide longitudinally of the recess, so it may move freely under the influence of gravity, is an abutment-plate 24 of generally rectangular form and'of less length than said recess. Its parallel side edges 26, 25 engage and are guided by the recess-walls 2B, 2i), while its ends 28, 28, by contact with the recess- walls 22, 22, determine the extent of its movement. In the plate 24 is an opening O having two portions. One, 30, is shown as semi-circular, it cutting through the rear edge of the plate. From this extends forwardly of the last a reduced portion 32 of the opening, which may have approximately parallel side walls joined by a curved end. The vedge 34 of the portion 32 on the side of the plate toward the passage I2 and the wall I8 is preferably beveled at an angle approximating that of the under side of the head of a wood-screw.

TheA drawing shows the last as carrying a shoeupper S with its soles s, to the heel-seat of which a heel I-I has been applied. The cup of the heel or the heel-seat or bot-h have been coated with an adhesive and clamped together upon such a Work-support as that of the previously-mentioned application o-r of Letters Patent of the United States No. 1,826,723, Bertrand, October 13, 1931. Each of these cases discloses a power-drill and a power-screW-,driven and the application shows associated with the drill a countersink so successive drilling and countersinking operations may be performed without a change of tools. In the drawing of the present case there appears only the heel-tread-rest 36 of such an apparatus. In considering the use of my improved last, it may be assumed that the Work elements have been associated as just indicated. Before clamping them in place, the operator Will incline the last downwardly from heel to toe, allowing the abutment-plate 24 toslide forward in the recess I'I until the unbroken end 28 rests against the corresponding recess-Wall 22. This locates the opening-portion 30V as appears in Figs. 1 and 3, the periphery of said portion being outside and substantially concentric to the mouth of the lastpassage I2. With the work clamped and the abutment-plateV thus positioned, the operator may drill the heel and countersink the heel-seatmaterial with a tool T, which may be powerdriven, as previously indicated, or hand-actuated. Obviously, if desired, a separate drill and countersink may be employed rather than the combined tool. The last-passage l2 and the plate-openingportion 30 pass the tool freely. Upon the withdrawal of the tool, the inclination of the last may be reversed, it being tipped downwardly from toe to heel. This causes the plate 24 to slide rearwardly until it is arrested by the Contact of the spaced end surfaces 28, 28 with the opposed wall 22 (Figs. 2 and 4). The portion 32 of the opening O is thus brought into registration with the last-passage l2, the inclined surface 34 projecting across the mouth of said passage. A wood-,screw W of the correct size is now inserted in the passage and set by a screw--driver t into the drilled opening in the heel-seat and heel until the inclined under side of its head is forced against the plate-surface 34. With the heel thus firmly clamped, the work may be removed from the support of which the tread-rest 36 is a part, an-d the adhesive allowed to dry. This having been accomplished, the. screw W may be backed off by a screw-driver until the abutmentplate may be caused to slide back to its initial position by inclination of the last. This restores the opening-portion 30 to registration with the screw-head so the setting of the screw may be completed, the hea-d bearing against the countersink-depression in the heel-seat-material. The retentive force of the screw is thereby added to that of the adhesive, it no-w becoming a permanent part of the shoe. It is to be observe-d that this utilization of a single screw as both a temporary and a permanent clamping means is effected with the addition to a last of but a single element.

Because of the. character of the heel-seat-material or of the fastening that is used, it may not be necessary to employ a countersink, the tool T consisting only of a drill. In that case, the drilling may be done through the portion 32 of the opening in the plate 2li, so the tipping of the work between the drilling and the first screwinserting operation is avoided.

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

1. A last having a body provided with a fastening-receiving passage opening through the heel-seat-portion, and a member situated at the heel-seat-end of the passage and being free to move upon the last under the influence of grav- Y ity into and out of position to be engaged by a fastening introduced through the passage.

2. A last having a. body provided with a fastening-receiving passage opening through the heel- .seat-portion, a plate secured to the heel-seatportion, there being a space between the lastbody and the plate, and a member movable in Vthe space upon inclination of the last and provided with an opening having a reduced portion, the member being limited in its movement by contact of its edges with the walls of the space to present either the reduced portion. or a larger portion of the opening in registration with the passage.

3. A last having a body provided with a fastening-receiving passage opening through the heelseat-portion, a clinching plate secured to the heel-seat-portion of the last-body and forming therewith a recess, an abutment-platemovable in the recess, said abutment-plate being provided with an opening one portion of which will retain the head of a headed fastening while another portion will permit said head to pass, the

. abutment-plate being guided and limited in its therewith a recess, a generally rectangular abut-y ment-plate movable in the recess, said abutmentplate being provided with an opening a reduced portion of which will retain the head of a headed fastening whileanother portion will permit said head to pass, the abutment-plate being guided in its movement by engagement of opposite edges with the recess-walls, contact of intermediate opposite edges of the abutment-plate limiting the movement of said lplate to present either the head-retaining-portion or the head-passing-portion of the opening in registration with the lastpassage. v

MICHELE CUOZZO.

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