US1518158A - Last - Google Patents

Description

Dec. I9, 1924. f 1,518,158

H. F. LOEWER l LAST Filed Aug. 14, 1922 o Il ||||llll l v i W L' ATTORNEYS' CAG CII

Patented Dec. 9, 1924.

UNITED STATES HENRY F. LOEWER, 0F ROCHESTER, NEW YORK.

LAST.

Application led August 14, 1922. Serial No. 581,615.

To all 'whom t may concern:

Be it known that I, HENRY F. LOEWER, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Lasts, of which the followingis a specification.

Y The present invention relates to lasts and more particularly to the type in which the last embodies a fore-part and a heel part, the latter having its forward portion movable upwardly in order to carry the heel part forwardly relatively to the toe part, an object of this invention being to provide an y improved construction which has the meeting surfaces on the two parts adapted to be formed in an inexpensive way. Another object of the invention is to form the surfaces in such a manner that the forwardv end of the heel part may be interlocked with the upper rear edge of the fore-part. Still another object of the invention is to provide an improved bonding means. i A further object of the invention is to provide an improved means oflocking the last in expanded condition. Still another and further object 0f the invention is to provide a locking device which may be utilized for locking the ylast in a collapsed condition preferably with the forward portion of the heel part engaged above the rear upper portionof the foreart. i p To these and other ends, the invention consists of certain parts and combinations of parts, all of which will be hereinafter described, the novel features being pointed out in the appended claims.

In the drawings: I

Fig. l is a side view ofv a last constructed in accordance with this invention with part of the toe part broken away; v

Fig. 2 is a fragmentary view of the last showing the last locked in expanded condition;

Fig. 3 is a detail view of the detent;

Fig. 4 is a section on the linev4--4, Fig. 1; and

Fig. 5 is a sectional view showing the last locked in collapsed condition.

Referring more particularly to the embodiment of the invention herein illustrated, l indicates the toe or fore-part and 2 the heel part of the last. The meeting edges of these parts are formed by two straight cuts 3 and 4, arranged at different angles to each other and transversely of the longitudinal axis, the upper cut being at a greater angle to said longitudinal axis than the lower cut. A substantially longitudinal cut connects the cuts 3 and 4 providing a shoulder 5 on the heel part-and a shoulder 6 on the toe or fore-part.

The last parts are connected by a bonding means which permits the forward portion of the heel part to move upwardly in order to move the rear portion of the heel part forwardly. This bonding means, in this instance, embodies two links or plates 7, arranged in spaced and parallel relation and pivoted on a pin 8 extending transversely through the heel part and a pin 9 extending transversely through the toe part, the toe part having in its rear face a kerf 10 in which the links extend and the heel part having in its forward face a kerf 11 receiving said links 7. By this arrangement, when the fore-part of the heel part is moved upwardly, the links swing on the pivot pin 9 and the heel part swings on the pivot pin 8 so that the rear portion of the heel parts moves forwardly. This movement may be continued until the shoulder 5 passes above the upper rear edge 12 on the fore-part where it may be held by any suitable means as hereinafter. described so as to lock the last in collapsed condition.

A locking means of novel construction is provided for locking the last in an expanded condition. This lockingA means, in this instance, embodies a lever or detent 13 pivoted on a pin 14 which passes through the kerf l1 at a point above the pivot pin 8 and forwardly of said pin. The detent has a portion l?)a extending upwardly through. the top of the heel part by way of the kerf l1 and serving as an operating portion for such detent. The detent also has a portion extending downwardly and forwardly and provided with a bevelled surface 13b. This bevelled surface .is adapted to hook under the pin 9 which acts as an abutment for said detent so as to prevent the collapsing of the last when the surface lb'engages the under side of such pin 9. This surface is so formed that it takes up for any wear that may occur between the pin and such surface. In order to give this detent or locking lever 13 a tendency to move toward the abutment or pivot pin 9 at its lower end, spring means acts on said lever 13. This spring means,

Cil

in this instance, is in the form of a coil spring 15 surrounding a plunger 16, both being mounted in a bore 17 intersecting the kerf 11, the plunger engaging the rear side of the detent or lever 13 below the pivot. In order to disconnect the detent from the abutment or pin 9 the operating arm 13@ is moved forwardly and, at the same time, the relative movement is effected between the heel part and the toe part causing the links 7 to swing on the pivot 9 and the heel part to swing on the pivot 8.

In order that the spring may be prevented from moving the lower end of the locking lever or detent too far forwardly above the pivot pin 9, and, at the same time, to utilize said spring through said detent for holding the shoulder 5 in engagement with the locking surface 12 at the rear upper portion of the fore-part, a surface 18 is provided preferably by forming a ledge on one of the lin-ks 7 on the side opposed to the other link. This surface is curved and not only guides the detent to its position beneath the abutment 9 upon the expansion of the last, but, as it is eccentric with reference to the pivot pin 9, the'spring through the detent lever 13 acts on thesurface to hold Vthe links upwardly at their rear ends andV in this way to sustain the abutment 5 above the locking surface 1Q, as illustrated in Fig. 5.

o From the foregoing it will be seen that there has been provided improved meeting surfaces between the two parts of ay collapsible last. These meeting surfaces are formed by two straight saw cuts in the top and the bottom of the last, out of line with each other, and at different angles to the longitudinal axis of the last, the upper cut being at a greater angle to the axis than the lower cut, and the two cuts being connected by a short cut extending substantially parallel with the longitudinal axis of the last. A bonding means is provided which is in* expensive to manufacture and permits one of the pivot pins of said bonding means to be utilized as an abutment for the detent. The detent also acts on the bonding means to hold the last in a collapsed condition.

What l claim as my invention and desire to secure by Letters Patent is:

1. A last comprising a fore-part and a heel part having meeting edges which permit the movement of the forward portion of the heel part upwardly with reference to the rear portion, bonding means pivotally connectedto the heel part and to the forepart, and detaining means pivotally mounted on one of said parts at a point eccentric to the pivot of the bonding means on such part and utilizing the pivot of the bonding means on the other part as an abutment for locking the two parts against relative movement.

2. A last comprising a fore-part and a heel part having meeting edges which permit the movement of the forward portion of the heel part upwardly with reference to the rear portion, two bonding plates ar ranged in spaced parallel relation and plv otally connected to the heel part and the fore-part, a detent pivotally connected to one of said last parts at a point eccentric to the pivot of the bonding means on such part, operating between the bonding plates and engaging the pivot pin of said bondingl plates on the other of said last parts to lock the last in expanded condition.

3. A last comprising a fore-part and a heel part having meeting edges which pen mit themovement of the forward portion of the heel part upwardly with reference to the rear portion, two bonding plates pivotally connected to the heel part and to the fore-part, a detent pivotally connected to the heel part, extending upwardly through the top of said part from the pivot and extending downwardly from the pivot between the plates and beneath the pivot pin on the fore-part to lock the last in expanded condition.

4. A last comprising a, fore-part and a heel part having meeting edges which permit the movement of the forward portion of the heel part upwardly with reference to the rear portion, a bonding means pivotally connected to the heel part and to the fore part, av detent lever pivoted to the heel part, extending upwardly through the top of the latter and having a portion extending downwardly from the pivot to engage beneath the pivot pin of the bonding means on the torepart.

5. A last comprising a fore part and a heel part having meeting edges which permit the movement of the forward portion of the heel part upwardly with reference to the rear portion, bonding means, pivot pins. one connecting the bonding means to theheel part and the other connecting the bonding means to the fore part, a spring pressed detent lever pivotally mounted on the heel part and interlocking with the pivot pin of the bonding means on the fore part to lock the last in an expanded condition, and means carried by the bonding means at a point eccentric to the pivot pin on the fore part to be engaged by the detent lever, when the last is collapsed to prevent the detent lever engaging above the pivot pin.

6. A last comprising a fore part and a heel part, bonding means pivotally connected to the fore part and to the heel part. and a detent pivotally mounted on one of said parts at a point eccentric to the pivot of the bonding means on such part and having an abutment facing toward the pivot of the detentto cooperate with the pivot of the bonding means, said last mentioned bonding means pivot lying when the last is exa lll] loo

panded and the abutment is in engagement therewith between the abutment on the detent and the pivot or' the detent.

7. A last comprising a f0re-part and a l' heel part having meeting edges Jformed by two straight cuts at diii'erent angles to the longitudinal axis of the last, the upper eut being at a greater angle t0 said longitudinal axis than the lower cut and the two outs being connected by a eut eX- 10 tending substantially longitudinally of the axis of the last, and bonding means connecting said fore-part and heel part and permitting the forward portion of the heel part to move upwardly and forwardly with reference to the rear portion of the heel part.

HENRY F. LOEWER.

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