US3366985A

US3366985A - Stay strip applying machine

Info

Publication number: US3366985A
Application number: US501401A
Authority: US
Inventors: Joseph C Antell
Original assignee: Prime Manufacturing Co
Current assignee: Prime Manufacturing Co
Priority date: 1965-10-22
Filing date: 1965-10-22
Publication date: 1968-02-06
Anticipated expiration: 1985-02-06

Description

Feb. 6, 1968 1 c. ANTELL 3,365,985

STAY STRIP APPLYING MACHINE 2 Sheets-Sheet l U. M m E T T m N M 2 V A i m C. plo Ll I O H 6 m 2 I n... 69

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Fb- 6, 1968 J. c. ANTELL 3,366,985

STAY STRIP APPLYING MACHINE Filed Oct. 22, 1965 2 Sheets-Sheet 2 FIG. 3

INVENTOR.

Y JOSEPH C. ANTELL B ,www

United States Patent Oiice 3,366,935 Patented Fein. 6, 1968 3,366,985 STAY STRIP APPLYING MACHINE Joseph C. Anteil, Lynn, Mass., assigner to Prime Manufacturing Company, Lynn, Mass., a corporation of Massachusetts Filed' Oct. 22, 1965, Ser.. No. 501,401 11 Claims. (Cl. 12-59.5)

ABSTRACT F THE DSCLUSURE Stay strip applying machine having a work supporting roll and adjacent table upon which the work is engaged under yielding pressure by a feeler arranged, when it passes off the work, to bring into action a severing knife.

This invention comprises a new and improved machine for applying stay strips to shoe uppers or other objects requiring reinforcement or increased thickness in selected areas.

The invention is herein disclosed in its application to a machine for applying eyelet stay strips to the quarters of shoe uppers. In this machine the stays are cut from a roll of coated continuous adhesive tape in predetermined and controlled lengths and applied by pressure to the inner surface of the quarter. Coated cloth or paper fabric material may be used, usually one-half to five-eighths inches in Width. The length of the stay applied to the upper may be varied from three-fourths to four and onehalf inches by automatic cut-off mechanism.

In its preferred form the machine comprises a worksupporting feed roll, feeding means for advancing a shoe upper upon the roll with a stay strip in superposed relation, power-operated cutting mechanism for severing the stay strip, and a feeler or sensing finger arranged to engage the upper and operating to time the actuation of the cutting mechanism before the stay strip reaches the trailing edge of the upper. Thus the severed end of the stay strip lies well within the contour of the quarter in readiness to receive the eyelet and is completely concealed in the finished shoe.

These and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanying drawings in which:

FIG. 1 is a view of the machine in side elevation,

FIG. 2 is a fragmentary plan view o-f the machine table,

FIG. 3 is a corresponding view of the same in elevation, and

FIG. 4 shows a portion of a shoe quarter with the stay strip in place.

The machine in its illustrative embodiment comprises a frame 10 suitably designed to carry the Working parts of the machine at convenient height. To one side face of the frame a bracket 11 is pivotally attached by a stud 12. The free end of the bracket is curved upwardly and inwardly and is provided with bearings for a rotatable work-supporting roll 13. The bracket is yieldingly maintained in predetermined initial position by an underlying compression spring 14, but it may be temporarily lowered by treadle connections 15 to permit the insertion of work. The frame 10 is provided with an outstanding lug 16 carrying a set screw 17 which bears upon a portion of the bracket 11 and adjustably determines its initial position.

The free end of the bracket 11 carries a short stationary jack shaft 18 upon which the roll 13 is mounted and retained by a washer 19. To the outer end of the jack shaft is clamped a block 20 having a stem which carries the table 21 of the machine to which the work is presented on its way to the roll 13, where the stay strip is applied. The table presents an extended flat work-supporting face lying in a plane substantially tangent to the top cylindrical surface of the roll 13.

The table 21 extends toward and partially about the upper part of the feed roll and carries an edge gauge 22 for the upper U, as shown in FIG. 2, and this is adjustably secured to the table by a screw 23.

The work feeding means of the machine comprises a pair of

feed feet

24 and 25 carried by forwardly extending arms operated by properly timed eccentrics on a driven transverse shaft 26. The shaft 26 is journaled in a U- shaped bracket 27 permanently secured to the upper part of the frame 10. The feeding feet and their operating eccentrics are substantially identical to the corresponding parts shown in United States Patent No. 1,794,204, Ridderstrorn, to which reference may be had for further details of the feeding means.

Bolted to the face of the bracket 27 is a stationary guideway 28 in which is formed a longitudinal trough for the tape T. This is drawn from a coil (not shown) and led through a guide eye 29, over a guide roll 30. It is then directed by forked guide fingers 31 and 32 `and led over a guide roll 33 into the upper end o-f the trough of the guideway 28. The tape passes downwardly beneath a spring pressed dog 34 which prevents retrograde movement of the tape. As it passes from the trough it is deiiected rearwardly by an adjustable finger 35 that lays the free end of the tape over the upper U in position to be engaged by the

feed feet

24 and 25. The adhesive face of the tape faces outwardly in passing down through the guide trough and downwardly in passing the guide finger 35 so that it adheres at once to the upper or shoe quarter and advances with it under the `actuation of the

feed feet

24 and 25.

The tape is severed automatically by a knife 40 mounted to rock about a pivot 41 set in the inner branch of the bracket 27. The knife is secured by a screw 42 to an arm 43 connected at its upper end through a long link 44 to one arm of a bell crank lever 45 mounted to rock with a pivot shaft 46 journaled in the bracket 27.

The shaft 46 carries an inwardly extending arm 47 normally held in an elevated initial position by an underlying compression spring 48 and operatively connected through a vertical rod 49 to the movable core of a solenoid 50 mounted in a casing 51 in the top of the frame 10. It will be apparent that when the solenoid is energized the lever 45 will be rocked in clockwise direction and the knife will make its operative stroke against the compression of the spring 48.

The action of the knife 40 is timed and controlled by a sensing finger or feeler 60 adjustably secured by Aa screw 61 to a rocker arm 62. The rocker arm 62 has a downwardly extending branch 63 journaled on a pivot pin 64 set in the edge of the table 21 and is urged to rock upwardly in counterclockwise direction as seen in FIG. 3 by a compression spring seated in the table 21. The feeler 6l) is thus urged downwardly about the axis of the pivot pin 64 and maintained against the upper U by yielding pressure.

The rocker 62 is perforated at its outer end for passage of a wire 66 which is encased in a sheath 67 and clamped at its other end to the lug 16 on the machine frame 1li. This is known as a Bowden wire. The remote end of the sheath 67' is clamped to the movable bracket 11 by a clip 68 and the other end is clamped in the block 20 and the whole sheath is of course movable with respect to the wire 66.

At its free end, above the ringer 62, the wire 66 carries adjustably a head 69. When the wire 66 is pulled downwardly with the lowering of the work supporting roll 13 the head 69 engages and depresses the rocker and lifts the sensing finger 60 so that the upper or quarter U may be inserted beneath it on the table 21. When the treadle connection is released the finger 6d engages and rides on the upper until its trailing edge has been advanced beyond the sensing end of the finger. The rocker then rocks under the actuation of its compression spring and the linger 60 engages the table 21 where it remains until new work is presented.

The solenoid Si) is wired in circuit with a microswitch 70 secured to the under side of the table 21 and having a button disposed in operative relation to the branch 63 of the rocker 62. Accordingly, when the finger 6i) drops off the trailing edge of the work, the switch 7i) is tripped to energize the solenoid Sil and the knife is swung inwardly to sever the tape T at some point within the contour of the quarter U. This point of severance is deter-v mined by the adjusted setting of the sensing finger 60. The closer it is set to a fixed point of severance the shorter will be the length of applied tape.

The assembly of sensing mechanism upon the movable Work supporting members is important to the successful operation of the machine and constitutes a feature of inventive ingenuity.

The employment of sheathed wire and the illustrated construction for securing the desired action of the wire by movement of the sheath is also a feature of the invention not heretofore used in machines of this general type.

It will be seen that the wire 66 is guided by its sheath 67 in loop formation from its fixed end at the lug 16 to its movable end which passes through the table 62. When the bracket 11 is rocked about its pivot 12 the movement of the sheath 67 elongates the bight of the wire loop and causes the free end of the wire to move twice as far downwardly as the table 21. It is this differential movement of the wire that lifts the sensing finger 60 through the downward movement of the head 69. In FIG. 3 the sensing finger is shown as riding on the upper U and a slight amount of lost motion is indicated between the head 69 and the finger 62.

Having thus disclosed my invention and described in detail an illustrative embodiment thereof, I claim as new and desire to secure by Letters Patent:

1. A stay strip applying machine comprising a ywork supporting feed roll, a flat work table mounted adjacent thereto for bodily movement in the machine to admit a work piece, a feeler pivotally mounted on the table for yielding engagement with a work piece thereon, work feeding means cooperating with the work supporting roll, and power operated cutting mechanism controlled in its timing by movement of the work piece upon said table beyond its point of contact with the feeler.

2. A stay strip applying machine as described in claim 1 further characterized in that the feeler is located substantially outside the path of the cutting mechanism so that the stay strip may be severed at a point within the trailing edge of the upper.

3. A stay strip applying machine comprising transversely movable work feeding means, a work support bodily movable toward and from the feeding means and including a flat table, automatic knife mechanism, and a sensing finger carried by the said table for controlling the timing of the knife mechanism.

4. A stay strip applying machine described in claim 3 further characterized in that the knife is movable in a fixed path to sever stay strip tape always at a predetermined point and the sensing finger is adjustable on the table to vary the length of tape applied before the knife mechanism is actuated.

5. A stay strip applying machine as described in claim 3 further characterized in that a solenoid is provided for operating the knife and a connected microswitch is mounted beneath said table for movement with the work support and in operative relation to said sensing nger.

6. A stay strip applying machine comprising a stationary frame having work feeding means and automatic tape cutting mechanism, a bracket movably connected to the frame and having a pivotally mounted sensing finger, a sheathed wire connected to the sensing finger and thc stationary frame and having its sheath connected to the movable bracket and a solenoid circuit controlled by relative movement of the wire with respect to its sheath.

7. A stay strip applying machine comprising a stationary frame having work feeding means and power-operated tape cutting mechanism, a bracket movably connected to the frame and having a table and a pivotally mounted sensing linger, a wire connected to the sensing finger, means for causing more rapid movement of the wire than of the table when the bracket is moved to open position, thereby separating the sensing finger from the table for the introduction of the work.

8. A stay strip applying machine as defined in claim 7, further characterized in that the wire is fast at one end to the frame and extends to the sensing finger in a loop formation that is elongated by pivotal movement of the bracket.

9. In a stay strip applying machine, a frame having work feeding means and an electrically operated tape severing mechanism, and a pivoted bracket having a table, a rocker pivotally mounted on the table and carrying an adjustable spring-operated sensing linger arranged yieldingly to engage` a shoe upper upon the table, an electric switch located below the table, and operative connections between the rocker and switch for energizing the tape severing mechanism.

10. A stay strip applying machine comprising a stationary frame having tape feeding and severing means, and a bracket pivotally mounted on the frame and carrying a transverse shaft at its free end, a work-supporting roll ,on one end of the shaft and a table on the other end, a spring-operated sensing finger pivotally mounted abo\e the table and having a branch extending downwardly below the table, a microswitch located below the table in operative range of said branch, and means for lifting the sensing finger when the bracket is swung to work-receiv ing position.

11. A stay strip applying machine as described in claim 10, further characterized in that the means for lifting the sensing nger comprises a sheath-enclosed wire arranged in U-formation with the remote end of the wire fixed beyond the movable end of the sheath.

References Cited UNITED STATES PATENTS 1,794,204 2/1931 Ridderstrom 12-59.5 2,223,209 1l/l940 Groh et al l2-59.5 2,871,493 2/1959 Vachon l2-59.5 3,012,261 12/1961 Small 12-59.5

PATRICK D. LAWSON, Primary Examiner.