US1979395A - Fastening-inserting machine - Google Patents

Description

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FASTENING INSERTING MACHINE Filed June L4. 19:52

1 50 upon the member and holder.

Patented Nov. 6, 1934` UNITED STATES PATENT oFFIcE FASTEN ING -IN SERTING MACHINE Application June 14, 1932, Serial No. 617,135

16 Claims.

This invention relates to machines by which fastenings are inserted in Work, it having special utility in connection with machines for nailing heels toI shoes. v

` In machines for attaching heels by securing nails which are driven from the inside through the heel-seat of a shoe into the heel, the nails are customarily held pointsA up upon the `upper lo extremities of drivers reciprocating in passages in a jaclr on which the shoe being operated upon is supported. As heels diiTer in height, the length of the securing nails varies, and consequently the drivers which are positioned sufficiently low in the jack-passages so the longer nails will not rise above the jack-top will, when short nails are used, cause their points to lie initially considerably below the openings of the driver-passages. l-lere, they will be where they cannot be seen by the operator and it cannot readily be` determined Whether the passages have received a full load. As a result of this, `all the securing nails may not be driven, causing the Work to be imperfect. This may also affect the operators, since in some shops they are fined for missed nails. Further, as the shorter nails rise under the influence of the drivers, there is an interval during which there is nothing to prevent the points from being displaced one Way or another in the passages, so they may enter the This is most objectionable when the ends of the drivers areV heel-seat at uncertain angles.

inclined to direct the nails inwardly, to prevent their points from emerging through the Walls of heavily pitched or tapered heels. Instead of being inserted at the desired inward angles, `the displacement of the nails, while they are loose and uncontrolled, may cause them to break` through the heel-walls.

nails or other fastenings, whatever may be their length, that their points will be initially under" the observation of the operator and ready to engage the work as soon as their inserting movement starts. This object I attain, in a fastening-inserting machine broadly, by associating with a work-support and co-operating reciprocatory actuating member, a ho-lder fora fasteningdriver yieldable upon the actuating member and also moved positively by the contact of surfaces To cause the arrangement to operate properly upon fastenings of different lengths, means is provided for varying the normal distance between `the contactsurfaces just mentioned, thus bringing the points cf au fastenings into the desired relation. in

the fastenings are driven after the plungerand It is an object of my invention to so position addition to this adjustment, the extent of forward movement of the actuating member may oe varied, this determining the depth to which holder-surfaces have come into engagement. When the invention is applied to a heel-attaching machine, the work-support may take the form of a jack provided with passages, a plunger reciprocating in the jack and having yieldable upon it a holder carrying drivers which operate in the jack-passages. In this relation, there is believed to be novelty in the yieldability of the holder and drivers, regardless of positive actuation. v In the embodiment of the invention here- 1n illustrated, a spindle is guided in the reciprocatory plunger and has nail-drivers mounted upon it, there being a spring interposed between the spindle and plunger. As the spring yields, Contact between surfaces moving with spindle and plunger, respectively, causes the drivers to be positively actuated for the insertion of the nails; The drivers are shown as mounted upon a4 holder threaded on the spindle to obtain a variation in the space between the contactsurfaces and thus in the normal location of the nail-points, While the plunger may consist of relatively movable sections adjustable to determine the depths to which the nails are driven. In the various embodiments of the invention, the ends of the drivers which engage the nails are 8 preferably inclined forl the reason already pointed out, and the adjustment of the driver or drivers insures the engagement of the Work,

by the nails before their inclined relation is disturbed. 99

In the accompanying drawing,

Fig. 1 illustrates one possible form of the jack of my invention in broken side elevation;

Fig. 2 is an enlarged vertical section on theV line II'-II of Fig. 1; and "i Fig'. 3, a broken side elevation of the jacktop.

At l0 appears a fragment of the frame of a heel-attaching machine, which may be generally similar to that of Letters Patent of the United States No. 1,545,575, Standish, July 14, 1925. From the frame rises a casing or body-portion 1270i a jack J arranged to support shoes'when heels are lbeing attached by nails driven from within said shoes. Guided to move vertically in the casing is a plunger or actuating member l4'r'eciprocated through'a stroke of unvarying length by mechanism such as that of the Standish patent. 'lhe'plunger is shown vas sectional, its lower main portion having an upward extension 16, to which is connected by a right-andleft threaded coupling 18 an end-section 20. A lock-nut 22, threaded upon the extension, contacts with the coupling to retain it in the position to which, by its rotation, it may have adjusted the section 20. The purpose of this change in the length of the plunger will be later explained. The plunger-section 20 contains upper and lower axial bores 24 and 26, respectively, divided by a horizontal partition 28, in which is a reduced axial bore or opening 30. Movable in the plunger-bores is a spindle 32, which may be guided in the opening 30. The spindle is shown as having at its lower extremity a head or enlargement 34 moving freely in the bore 26 and limited in its upward travel by engagement with the partition 28. At the top of the spindle is a second enlargement, preferably in the form of a sleeve 36 threaded at 38 upon the body of the spindle and having a sliding fit in the bore 24. The sleeve above the plunger is extended laterally to furnish a plate or holder 4i), in which nail-drivers 42 are secured, these drivers moving in passages 44 in the jack-top 46. As is best illustrated in Fig. 3, the upper ends of the drivers are inclined at 48 so they diverge downwardly and inwardly from the work-supporting surface 50 of the jack-top. As the heads of the nails, appearing at N in the passages 44, rest upon these surfaces 48, the Shanks are inclined inwardly, bringing the points to the inner sides of the openings in the jack-top.

At the under side of the holder 40 is a horizontal surface 52, which may contact with an opposed surface 54 on the upper extremity of the plunger-section 20. When the surfaces are thus engaged, the plunger and holder move upwardly together as a unit. Normally, however, the surfaces are separated by the action of a spring 56 surrounding the spindle 32 in the bore 24, it being interposed between the lower end of the sleeve 86 and the plunger-partition 28. The head 34 of the spindle limits the extent of separation between the surfaces 52 and 54 under the influence of the expansion of the spring 56. The distance between the surfaces determines the location of the upper extremities of the drivers 42, and, therefore, of the points of the nails N thereon. To bring said points into the desired relation to the jack-top-openings, the sleeve 36 with the driver-plate 40 is adjustable upon the spindle. This may be accomplished by rotatingr the spindle 32 by a tool applied to a slot 58 in its upper end. The sleeve is held.- against rotation by a projection 60 from the section 20 of the plunger, this entering a longitudinal slot 62 in the sleeve. This engagement both holds the drivers 42 in proper alinement with the jack-top-passages 44 and, by preventing rotation of the sleeve, causes said sleeve and the plate 40, when the spindle is turned as just described, to move longitudinally of said spindle to either raise or lower the ends of the drivers. A locknut 64 upon the threaded portion 38 of the spindle may be forced against the bottom of a recess 66 in the plate or holder and in which the slotted end of the spindle is situated. This secures the elements in their adjusted relation.

To describe the use of my invention, the length of the plunger 14 will have been initially so adjusted by turning the coupling 18 that the end surfaces 48 of the drivers 42 will, when the driver-holder-surfaces 52 and the plunger-surface 54 are in contact, move sufficiently above the surface 50 of the jack-top to sink the nailheads to the desired depth in the insole of the shoe being operated upon. Assuming that the work is to be changed so nails of diiferent lengths are to be used, the lock-nut 64 is loosened and the spindle 32 turned in the direction necessary to either raise or lower the plate 4G and its drivers until the points of the nails upon said drivers are in close proximity to the surface 50 of the jack-top. This adjustment of the normal driver-position is maintained by tightening the nut 64. A load of nails having been supplied to the passages 44, the operator can at a glance see whether or not said load is complete. When the heeling machine is started by the operator, all the nails, Whatever their length, are at once forced by the elevation of the drivers against the insole of the jacked shoe under the influence of the force of the rising plunger 14 transmitted through the spring 56 to the plate 46. Consequently, the nail-points are caused to somewhat enter the insole and are held between it and the driver-surfaces 48 against lateral displacement. This is of particular importance when nails are to be toed in by the inclination of these driver-surfaces, because, in absence of this control of the nails, the jar of the machine might so tilt them .that they would not rest against the inner surfaces of the passages but would become oppositely inclined and be driven out through the peripheral wall of the heel. As the spring 56 is compressed by the continuing upward movement of the plunger, the surface 54 of the latter reaches the plate-surface 52, causing the latter to be moved positively to insert the nails to a depth determined by the length of the plunger as fixed by the adjustment of the sleeve 18.

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

l. In a fastening-inserting machine, the combination with a work-support, of a reciprocatory actuating member co-operating therewith, and a holder for a fastening-driver yieldable upon the member, the holder and member having surfaces contacting during the travel of the member to effect a positive movement of the holder.

2. In a fastening-inserting machine, the combination with a work-support, of a reciprocatory actuating member holder for a fastening-driver yieldable upon the member, the holder and member having surfaces contacting during the travel of the member to effect a positive movement of the holder, and means arranged to vary the normal distance between said surfaces.

3. In a fastening-inserting machine, the combination with a work-support, of a reciprocatory actuating member co-operating therewith, a holder for a fastening-driver yieldable upon the member, the holder and member having surfaces contacting during the travel of the member to effect a positive movement of the holder, means arranged to vary the normal distance between said surfaces, and means arranged to vary the extent of forward movement of the plunger.

4. In a fastening-inserting machine, the combination with a vwork-support provided with driver-passages, of a plunger reciprocating in said support, a holder yieldable upon the plunger, the holder and plunger having surfaces contacting during the travel of the plunger to effect the positive movement of the holder, drivers fixed in the holder and operating in the support-passages, and means arranged to adcoeoperating therewith, a n

just one of the surfaces toward and from the other.

5. In a fastening-inserting machine, the combination with a work-support provided with driver-passages, of a plunger vreciprocating in said support, a holder yieldable upon the plung er, and drivers xed in the holder and operating in the support-passages.

6. In a fastening-inserting machine, the combination with a work-support provided with driver-passages, of a plunger reciprocating in said support, a holder yieldable upon the plunger, and drivers fixed in the holder and operating in the support-passages, the plunger and holder having `means for limiting the extent of yield of the holder.

'7. In a heel-attaching machine, a jack provided with passages, a plunger reciprocating in the jack, a holder yieldable upon the plunger, and nail-drivers fixed in the holder and operating in the jack-passages.

8. In a heel-attaching machine, a jack having a topy provided with passages, a plunger reciprocating in the jack, a holder carried by the plunger, nail-drivers fixed in the holder and operating in the jack-toppassages, and means arranged to move the holder upon the plunger to adjust the relation of the points of the nails to the openings of the passages.

9. The, combination with a jack, of a plunger reciprocating therein, a spindle guided in the plunger, drivers mounted on the spindle, and a spring interposed between the spindle and plunger.

10. The combination with a jack, of a plunger reciprocating therein, a spindle guided inthe plunger, a holder threaded upon the spindle, drivers fixed in the holder, and a spring interposed between the spindle and plunger.

11. The combination with a jack, of a plunger reciprocating therein, a spindle guided in the plunger, a holder threaded upon the spindle, drivers Xed in the holder, and a spring interposed between the spindle and plunger, there being surfaces upon the holder and plunger contacting to positively actuate the drivers as the spring yields.

1,2. The combination with a jack, of a plunger reciprocating therein, a spindle guided in the plunger and havng spaced enlargements, a holder threaded upon the spindle, drivers fixed in the holder, and a spring interposed between one of the spindle-enlargements and the plunger and acting to force the other enlargement into normal engagement with the plunger.

13. The combination with a jack, of a sec tional plunger reciprocating therein, means arranged to vary the relation of the plunger-sections to each other, a driver-holder and drivers carried thereby, and means for mounting the holder upon one of the plunger-sections for movement longitudinally thereof.

14. The combination with a jack, of a sectional plunger reciprocating therein, means arranged to vary the relation of the plunger-sec-` tions to each other, a spindle movable in one of the plunger-sections, a driver-holder threaded upon the spindle, and a spring interposed between the spindle and plunger.

15. In a heel-attaching machine, the combination with a jack having a top provided with a passage, of a plunger reciprocating in the jack, a holder yieldable upon the plunger, a driver mounted upon the holder and having an inclined end movable in the passage, and means arranged to vary' the normal position of the holder upon the plunger.

16. In a heel-attaching machine, the combination with a jack having a top provided with a passage, of a plunger reciprocating in the jack, a holder carried by the plunger, a driver mounted upon the holder and having an inclined end movable in the passage, and means arranged to vary the normal position of the holder upon the plunger.

WHEELER MINARD.

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