US1956815A - Work-supporting and attaching means - Google Patents

Description

y 1, 1934- J. M. WHELTON 1,956,815

WORK SUPPORTING AND ATTACHING MEANS Filed Jan. 2. 1932 2 Sheets-Sheet l //v VE/V 74W- sum.

M w awn May 1, 1934. J. M. WHELTON WORK SUPPORTING AND ATTACHING MEANS Filed Jan. 2, 1932 2 Sheets-Sheet 2 mx lmlfi n l/E/V 717A. Tww aking, m

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Patented May l, 1934 UNITED STATE PATENT QFFICE WfiRK-SUPPORTING AND ATTACHING MEANS Application January 2, 1932, Serial No. 584,402

21 Claims.

This invention relates to means for supporting work-portions and for attaching them to one another, it being especially useful in connection with the securing of counters in turn-shoes hav- A shoe-support and machine for this purpose are the subject of an application for Letters Patent filed in the United States Patent Ofiice on June 5, 1931, in the name of Frank W. Homan, said application being identified by the Serial No. 542,364. In the Homan organization, an extensible jack may have a toe-section fixed against movement upon a slide carried by the cross-head of a counter-attaching machine of the type disclosed in Letters Patent of the United States No. 1,461,893, C0nner, July 17, 1923, the heel-section of the jack being movable on the slide from the toe-section to cause the upper of a jacked shoe to be forced against a pasted counter which is within it. This produces adhesion between the upper and counter and draws the upper away from the inseam to smooth it over the counter. The movement of the heel-section brings the upper into engagement with a clamping member, which, while yieldable under pressure, has no other movement imparted to it, being dependent upon the travel of the jack-section to produce its upper-retain ing and consequent smoothing effect. With the work stretched and clamped, the nailing of the counter is performed, preferably by moving the jack beneath the nailing mechanism of the previously mentioned Conner machine. Operating in this manner upon shoes of different sizes and of different extensibility tends to render the clamping effect ununiform and to introduce uncertainty as to the location of the heel-section of the jack beneath the nailing mechanism. The smoothing action of the upper may therefore not vbe as desired, and the fastenings may be unsymmetrically driven into the counterflange. It is an object of my invention to apply to the counter-portions of the uppers of jacked shoes, by means convenient for the operator to use, substantially the same pressure, regardless of the size of the shoes and the character of the material, and to insure their unfailing alinement with nailing mechanism.

This end I gain by the employment of a jack jor work-support having r latively movable sections each arranged for contact with a sup ported shoe, and a clamping member movable in a novel manner under the influence of a movable section of the support. The heel-section of this support is preferably fixed, while the toesection is movable toward and from it, the clamping member being brought into work-clamping relation to the heel-section from a position removed from the work by the movement of the toe-section. As a result of this, the portion of the shoe which is to be operated upon remains in a practically unvarying position upon the support, and the clamping member may be carried through a constant distance to exert a definite efiect, whether the jacked shoe be small or large, and, consequently, whatever may be the extension of the jack by the travel of the toe-section. When such a work-support is mounted upon the slide of an attaching machine for movement into cooperation with nailing mechanism, means is provided for determining the relation of the fixed section to said mechanism, and correct alinement of the work-portions to be nailed with the nailing mechanism is made certain for all sizes, the position of the movable section having no influence upon it. As herein disclosed, a lever has a clamping arm associated with the fixed jack-section and an actuating arm co-operating with the movable section, there preferably being upon the actuating arm surfaces contacting with the movable section to successively effect the clamping action and to retain such action with uniform pressure. The movable section may have means, as one or more detents. and a cooperating rack or racks, for temporarily retaining it in this extended relation, together with means for latching said detents out of their retaining engagement, to allow the movable section to be returned to its normal position. There is further shown means for releasing the latching means under the influence of the movement of the section. The operator is thus relieved of the independent effort of release. tents are used, one may have a portion engaged by the other, so the withdrawal of one detent 9 from the rack will withdraw its companion.

In the accompanying drawings is illustrated a counter-attaching machine embodying my invention in one form,

Fig. 1 showing a broken side-elevation;

Fig. 2, an enlarged side-elevation of the jack with the elements in their work-receiving relation;

Fig. 3, a similar view upon a somewhat smaller scale, with the parts in their operating relation; and

Fig. 4, a front elevation looking from the left in Fig. 2.

At 10 we have a portion of the frame of a counter-attaching machine, which may be generally When two de.

that of the Conner patent. Upon the frame is fixed a die-block 12, in which are vertical passages 14 to receive counter-attaching nails or tacks, and in which operate drivers 16 depending from a movable top-girt l8. Reciprocating vertically in the lower portion of the frame is a carrier member or cross-head 20, upon which is movable horizontally, a mounting member or slide 22 guided in ways 24.

Upon the top of the slide is mounted a jack or work-support J, which consists of independent toeand heel- sections 26 and 28, respectively. Each section is in the form of a post or standard rising from the slide. The section 26 has a separable portion 30, and the section 28 a like portion 32, these respectively generally corresponding in form to the toeand heel-ends of a last. If desired, these portions 30 and 32 may be changed, to cause them to better conform to the particular work being operated upon. The heelsection 28 of the jack is fixedly secured to the inner portion of the top of the slide 22, while at the outer portion are ways 34, in which the toe-section 26 may move toward and from the heel-section. To produce this movement, a toggle-lever 36 is shown as pivoted at its extremities to the jack-sections, the center of the toggle being joined by a connecting-rod 38 to a treadle 40. When the operator depresses the treadle, the toggle is straightened to move the toe-section away from the heel-section. A spring 42, uniting an extension 44 of one of the toggle-links to the frame, serves to break the toggle, restoring the toe-section of the jack to its initial position adjacent to the heel-section, and at the same time lifting the treadle.

To temporarily lock the toe-section 26 in its extended relation against the force of the spring 42, there are shown two detents 46 and 48 pivoted upon said section, with their points staggered longitudinally of the ways 34, and drawn down by springs 49 upon the teeth of a rack 50 fixed to the top of the slide 22. This double detent permits the locking of the section 26 in shorter steps than when but one is employed, though this latter arrangement may be satisfactory. Upon the detent 46 appears an upstanding finger-piece 52, by which the jack-section 26 may be released for return to normal by the spring 42. The detent 48 may have formed upon it a lateral projection 54 extending into the path of the finger-piece, so, when the detent 46 is lifted by the operator, its companion is also raised, and the section 26 fully freed. To retain the detents out of engagement with the rack, without effort on the part of the operator, while the toe-section of the jack is returning toward the heel-section, I have provided a latch 56 pivoted upon the toesection and having a surface 58 arranged for engagement with the finger-piece of the detent 46 to hold said detent and the associated detent 48 elevated. During the contact of the detents with the rack, a latch-surface 60 rests upon the fingerpiece. When the jack-section 26 reaches its normal position, it is necessary that the detents again engage the rack in preparation for the next operation. This is efiected, without special effort on the part of the operator, by a contactprojection 62 extending horizontally from the jack-section 28 and lying in the path of an arm 64 depending from the latch below its pivot. As the section 26 reaches its initial position, contact of the latch-arm with the projection raises the latch, releasing the detents for engagement with the rack. The latch is held inactive as its surface 60 bears upon the finger-piece 52.

Fulcrumed upon the slide 22, just to the rear of the lower extremity of the jack-section 28, is a lever having three arms. One of these arms, 72, extends upwardly, carrying at its upper end a clamping portion 74, which may be of rubber or like yieldable material, this portion being horizontally alined with the rounded rear wall '76 of the jack-section 28, over which wall the counterportion of a jacked shoe will be located. A depression '78 in the clamping portion 74 furnishes better engagement with the rounded surface of the work. The arm 72 is held normally retracted by a spring joining an arm 82 of the lever 70 to the slide 22. The third arm, 84, of the lever extends forwardly beside the lower portion of the jack-section 26 and has upon its upper edge, adjacent to the section, a cam-surface considerably inclined to the horizontal at 86 and being, at 88, substantially horizontal in the clamping position of the arm 72. Projecting from the section 26 is a contact member, shown as a roll 90, lying, in the work-receiving position of the jack, near the lower end of the lever-surface 86. While the toe-section 26 of the jack is being moved forward to tension the upper of the jacked shoe, the roll rides up the surface 86, depressing the lever-arm 84 against the force of the spring 80 and moving the arm '72 anti-clockwise (Figs. 2 and 3) until the portion '74 comes into clamping relation with the surface '76 of the jack. The cam-surface is so situated that, just as the proper clamping pressure is attained, the roll 90 passes on to the lever-surface 88. This is now approximately horizontal, so a further travel of the jacksection 26 simply causes the roll 90 to advance along the surface 88, Without movement of the lever 70, thus maintaining constant the pressure which the surface 86 has created. Obviously, this maintenance of a chosen pressure will be independent of the size of the shoe being operated upon and of the extent to which its material may stretch.

In using the apparatus in the form illustrated, at the beginning of the operation the slide 22 is in its outer position on the cross-head 20, so the jack J is clear of the nailing mechanism. The toe-section 26 of the jack will be drawn by the spring 42 to its rearward position nearest to the heel-section 28, the detents 46 and 48 having been released from the rack 50 at the termination of the previous operation upon manipulation by the operator of the finger-piece 52. During this rearward travel of the section 26, the latch 56 will hold the detents raised. They will, however, be freed from the latch and restored to engagement with the rack by the action of the projection 62 upon the latch, just as the section reaches the work-receiving position. This is as appears in Figs. 1 and 2. A counter C, with its outside coated with paste, is applied to the top of the heelsection 28 (Fig. 2). A turn-shoe, right side out, with the material in temper and with the lining L loose and depending from the upper U, is taken by the operator, and the heeland toe-ends pressed toward each other. The tee is slipped over the forward plate 30 of the jack, and the rear portion brought over the top of the heel-section 28 and the counter thereon. There is sufficient excess of length of the shoe over the separation between the opposite outer extremities of the jack-sections so the operator may draw down the rear of the shoe until the inseam I is substantially below the work-contacting face of the plate 32 He thus holds the shoe and gradually depresses the treadle 40, so the forward travel of the section 26 tends to straighten the sole and attached upper. Before this has produced any substantial tensioning effect, the surface 86 of the leverarm will have been swung down by the travel of the roll over it, carrying in the arm 72 until the portion 74 clamps the rear of the upper against the counter and said counter against the jack. The degree of this pressure may be quite definitely fixed by the angle and extent of the surface 86, so it will be substantially constant. The desired force having been thus exerted, the roll 90 passes to the surface 88, which has been brought by the oscillation of the lever to an approximately horizontal position. The plate 30 is now so engaging the toe of the upper U that a tensioning of said upper begins, drawing the inseam upwardly over the wall '76 of the heel-section toward its natural position just inside the edge of the plate 32. But the member '74 is now in frictional engagement with the upper, resist ing its movement. As a result, the upper is simultaneously pulled smoothly over the counter C and pressed against its pasted surface (Fig. 3). All the wrinkles are thus removed from the upper, and perfect adhesion between the parts assured. When the proper tensioning and smoothing effect has been applied to the upper by the forward movement of the section 26, the rear of the sole S will be correctly located with respect to the flange of the counter over the upper surface of the plate 32, and the operator releases the treadle. The section 26 remains locked in its extended relation by the engagement of either the detent 46 or 48 with the rack 50. The slide 22 is then moved back under the die-block 12 to a point determined by an adjusting-screw 94: threaded into a bracket rising from the cross-head 20, said screw contacting with the slide. On account of this adjustment and the definite position of the heel-portion of the jacked shoe as established by the unvarying location of the heel-section 28 upon the slide, that area of the sole over the counter-flange in which it is desired to drive the attaching nails will be in the correct vertical alinement with the passages 14. The operator may therefore raise the cross-head 20 until the shoe is pressed against the under side of the die-block, supply nails or other fastenings to the passages 14, and start the machine in action. Thereupon, final pressure is supplied to the work and the drivers 16 descend and insert the nails to complete the attachment of the counter. After the retraction of the drivers, the oper ator pulls out the slide 22 with the jack J, releases the detents by drawing forward the finger-piece 52 so said detents are held raised by the latch 56, and removes the work for further operations upon it. These may include the pasting of the interior of the counter C and the turning-in and securing of the lining L upon the coated surface.

In applying my invention to the driving of the counter attaching nails by hand, the member 22 may be in the form of a base fixedly attached to a bench. The jack-structure and the manner of use may be as just described, except that, having tensioned and clamped the upper, the workman drives the attaching nails with a hammer.

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

1. The combination with a shoe-support provided with sections having a relative movement of approach and separation and each arranged for contact with the interior of a supported shoe to apply tension to the opposite extremities thereof, of a member movable into clamping relation to the exterior of the shoe-portion being tensioned, such movement being under the influence of a section of the support during the movement of separation.

2. The combination with a shoe-support provided with relatively movable sections, of a clamping member for the supported shoe movable into clamping relation and thereafter maintaining throughout the movement of the sections a substantially constant clamping effect under the influence of a movable section .of the support.

3. The combination with a shoe-support provided with heeland toe-sections relatively movable toward and from each other, of a clamping member, and means arranged to move the member from a position removed from the work into work-clamping relation to one of the sections during a portion of the relative movement of said sections in one direction and for maintaining the clamping efiect constant during the remainder of such section-movement.

4. The combination with a shoe-support provided with heeland toesections, one of said sections being movable and the other section fixed against movement, of a member movable under the influence of the movable section into workclamping relation to the fixed section.

5. The combination with a shoe-support provided with a heel-section fixed against movement and a toe-section movable toward and from the heel-section, both of said sections being arranged to enter a shoe and cause it to be stretched by the movement of separation between the sections, of a clamping member movable into workclamping relation to the heel-section only after the stretching of the work has been initiated.

6. The combination with a shoe-support provided with a heel-section fixed against movement and a toe-section movable toward and from the heel-section, of a clamping member movable into work-clamping relation to the heelsection under the influence of the toe-section during its travel away from the heel-section.

'7. The combination with a shoe-support provided with heeland toe-sections, one of said sections being movable and the other section fixed against movement, of a member movable under the influence of the movable section into work-clamping relation to the fixed section during the initial movement of separation of the movable section and for maintaining substantially the same clamping effect during the remainder of such section-movement.

8. The combination with an extensible jack having relatively movable heeland toe-sections, of a movable clamping member co-operating with the jack, and connections to the movable section for moving the clamping member.

9. The combination with an extensible jack having a fixed section and a movable section, of a lever provided with a work-clamping arm cooperating with the fixed section and an actuating arm co-operating with the movable section.

10. The combination with an extensible jack having a fixed section and a movable section, of a lever provided with a work-clamping arm cooperating with the fixed section and an actuating arm provided with a clamping surface and with a retaining surface contacting with the movable section.

11. The combination with an extensible jack the heel-section,

having a fixed section and a movable section, of a lever provided with a work-clamping arm 00-- operating with the fixed section and an actuating arm provided with a cam-surface, there being a surface upon the movable jack member for contact with the cam-surface.

12. The combination with an extensible jack having a fixed section and a movable section, of a lever provided with a work-clamping arm cooperating with the fixed section and an actuating arm provided with surfaces extending at diiTerent angles, there being a surface upon the movable jack member contacting successively with the arm-surfaces.

13. The combination with a mounting member, of a jack having a heel-section fixed against movement thereon and a toe-section arranged to slide upon the mounting member toward and from the heel-section, a clamping lever fulcrumed upon the mounting member for co-operation with the fixed heel-section from which it is normally spaced, means arranged to simultaneously move the toe-section away from the heel-section and the lever through the separating space into clamping relation to the heel-section, and means for locking the toe-section and lever in their actuated positions.

14. In an attaching machine, nailing mechanism, a reciprocatory carrier member, a slide movable upon the carrier member into and out of co-operation with the nailing mechanism, a jack having a section fixed against movement upon the slide and a section movable toward and from the fixed section, a clamping member movable into and out of co-operation with the fixed section, and means arranged to determine the relation of the fixed section to the nailing mechanism for the nailing operation.

15. In a counter-attaching machine, nailing mechanism, a reciprocatory cross-head, a slide movable upon the cross-head into and out of cooperation with the nailing mechanism, a jack having a heel-section fixed upon the slide and a toesection movable upon the slide toward and from a counter-clamping member movable upon the slide and cooperating wit the heel-section of the jack, and a stop arranged to determine the alinement of the heel-section of the jack with the nailing mechanism.

16. In an extensible jack, relatively movable sections, means for temporarily retaining a jacksection extended, means for latching said retaining means out of its active relation, and means for releasing the latching means under the influence of the relative movement of the sections.

1'7. In an extensible jack, a fixed section, a movable section, a detent pivoted upon the movable section, a relatively fixed rack with which the detent may contact, a latch pivoted upon the movable section for engagement with the detent, and a contact member against which the latch is carried in the movement of the section to release the detent.

18. The combination with a mounting member, of a jack-section fixed against movement thereon, a jack-section movable pen the mounting member, a rack secured to the mounting member, a detent pivoted upon the movable jack-section for engagement with the rack, and a latch pivoted upon the movable jaclosection for engagement with the detent, there being a projection from the fixed jack-section for contact with the latch.

19. In an extensible jack, a fixed section, a movable section, a detent pivoted upon the movable section, a relatively fixed rack with which the detent contact, a latch pivoted upon the movable section for engagement with the detent, a contact member against which the latch is carried in the movement of the section to release the detent, and means for moving the movable jacksection and thereby causing the contact of the latch and member.

20. In an extensible jack, a fixed section, a movable section, two detents pivoted upon the movable section, and a relatively fixed rack for contact with the detents, one of said detents being provided with a portion for engagement by the other detent during its separation from the rack.

21. In an extensible jack, a fixed section, a movable section, two detents pivoted upon the movable section, a relatively fixed rack for contact with the detents, one of said detents being provided with a portion for engagement by the other detent during its separation from the rack, and a latch for engagement with said other detent and arranged to temporarily hold both detents separated from the rack.

J OHN M. NHELTON.

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