US1366964A - Heel-attaching machine - Google Patents

Description

R. C. SIMMONS.

HEEL ATTACHING MACHINE.

APPLXCATION FILED DEC.3| 19H.

Patented Feb. 1, 1921.

RAIL-PEI 0.

UNITED srares SIMMONS, OF BEVERLY, MASSAGE rear OFFICE.

:t'ITEl. .iFiSSIErhTOI'R. TO UNITED SHOE HEEL-ATTAOHING incense.

To all whoorit may concern: f I

Be it known that I, liar/nu: U. SIMMONS, a citizen of the United States, residing at Beverly, in the county of Essex and State oi .Massachusetts, have invented certain 1mprovements in Heeldittaching Machines, of which the following description in connection with the accompanyingdrawings, is a specification, like reference characters on the drawings indicating like parts in the several figures. i 1 Y This invention relates toheel attaching machines and more particularly to that type of machine which is adapted for use inattaching heels to boots or shoes by means of nails or similar tastenings driven into the, heel from the inside oi. the shoe.

.Heel attaching by fasteuings-driven from the inside of the shoe through the insole and outsole into the heel, commonly called inside nailing, is practised to a large extent with s0-called Louis or ogee heels which, have a large heel seat surface and a very small cross-section at the waist. Such heels have a great deal of pitch or overhangat the rear, and for this reasmrpresent certain difficulties to. solid and secure attachment. It is particularly importantthat a heel of this type be strongly attached to the shoe as close as possible to its rear. end, since the tread face of the heel ,ispset well forward and a tremendous leverage is thus'enerted by the weight of the wearer tending toseparate the rear end or the heel from the shoe.

. The ordinary method ofattaching an in-' side nailed heel by nails driven substantially normal to its seat surface is more or less inadequate in the-case of heels having con siderable pitch, since therearmost na1l must be driven a a considerable distance from the rear end of the-heelin onder to prevent, its point .l'llOln emerging through the heel surface. In order to permit therearmost nail to be driven nearer the rear endiot theiliieel, it has-been proposed to driveg-it in an 111- clined direction, whereby its point is kept; well within the heel'body, while it enters the heel nearer the rear end of the latter where the greatest holding power is needed. It has even been proposed to provide a heel attaching machine with; an inclined nail driver for this purpose, but such drivers have been moved in a straight line, and con sequently,inasmuch as they must work inside the shoe, the approach or the nail to the Specification of Letters liatent.

ilatcntod Feb. 1, 1921.

Applicatiozi filed December 3, 1917. Serial Nb. 205,094.

rear of the heel has been limited by the counter and upper.

7 An importantobject 0f the present invention is to provide a nailing machine for i11- clined nailing which will permit the insertion of a nail into the work at a point nearer the limiting boundary of the work than 1s. possible with the machines heretofore known. In its application to the art of inside heel nailing, the desirable result is attained that a nail may be driven closer to the rear of the heel-than heretofore, and the heel thus be more securely attached at this vital point. t

.In pursuance of the object above outlined, I have succeeded in greatly improvmg nailing mechanism oi the type referred to by the employment of a curved nail driver guided for movement in a correspondingly curved path. I am thus enabled to drive a heel nail at an inclination to the surface which it enters and so to arrange the driving mechanism that the nail will enter the work much closer to the limiting boundary thereoi than if a straight driver were used. In inside heel nailing, it is practicable, by the use of mechanism embodying" my invention, to drive a heel attaching nail quite; close to the rear of the heel, inasmuch as the shapeand the path of the driver may be of a curve approximating, more or less, the shape of the inside of the rear portion of the shoe.

In a preferredtorm oi' the invention, the

nail driveris curved in an approximately circular arc and in its movement is guided by a suitable correspondingly shaped area ate driver passage. 7

further object oi the invention is to provide improved means tor adjusting the eil ectivc length of the drivers in nailing machines where the precise depth to. which the nail is set in the work is a matter of importance. Although its utility is notlimited tosuch conditions, a construction embody ing the present invention is particularly useful and convenient in cases where the nail driver is incased or not easily accessible from the side. It has been proposed in the past to provide for simultaneous adjustment of all the drivers oi a gang by means of a laterally movable wedge underlying the driver plate and operated from one side. By my invention, 1 have provided for greater I'GfiHOIHOIItQ Ol adjustment, in that the provision of a driver having threaded.

engagement with its supporting block or member, and so formed at its other end that it may be engaged and turned in or out of its support by a tool inserted in the-open end of the nail and driver guiding passage in the nail block or its equivalent. This formation may conveniently consist of a slot in the advance end of the driver which may be engaged by a screw driver inserted in the guide passage. Where there are a plurality of drivers constructed as just described, the effective length of each driver may be adjusted independently ofall the others.

For the purpose of disclosing the invention, I have selected a practical embodiment thereof which I shall now proceed to describe in detail, making reference to the accompanying drawings, in which Figure 1 isa vertical sectional View of a portion of a heel nailing machine embodying my invention, showing a portion of a shoe supported in codperative relation thereto; I

Fig. 2 is a perspective view of a detail of the nail driving mechanism;

Fig. 3 is a plan view of part of the mechanism shown inFig. 1 with the shoe removed; I Fig. 4 is a view of a securing member for maintaining the driver guide in position;

' and vention.

Referring now to the drawings, 10 indicates the work support or jack of a heel nailing machine and 12, 14 indicate the usual devices for pressing a heel upon a shoe and holding it in position while it is being attached. The upper end of the jack 12 carries a plate 16 in which are adjustably mounted driver tubes 18 guiding straight nail drivers 20. The plate 16 is slotted at 22 and a driver guide, indicated generally by 24, is formed to fit the slot. A flange 26, formed upon the driver guide rests on top of the plate 16, supporting the driver guide in operative position. The driver guide is formed of two in retracted position. The opposite end of the spring is bent up, as shown at 14-, and acts as a stop to limit the retracting movement of the driver, by reason of the engagement with the bent up end 44. of the spring of a shoulder 6L6 formed upon the driver.

The lower end of the driver guide is slotted at 48 to permit the entrance of a Hat plate 50 which is mounted upon the upper end of a reciprocable plunger 52. The elements just described are so related that when the plunger 52 is elevated the upper end of the plate 50 engages the lower end of the driver and advances the driver longitudinally to drive the nail, the plate 50 entering the slot 48 in the latter part of its upward movement.

In the actuation of a curved driver of the sort herein illustrated, there is a very considerable horizontal component in the force transmitted to it, and diiliculty has been ex- L perienced in securing the driver guide 21: in adjusted position in the slot 22. For the purpose of permitting adjustment of the driver guide longitudinally of the shoe and securing the guide immovably in adjusted position, I have provided the following construction. A series of recesses 54 are formed in the edge of one of the flanges 26, and a pin 56 of a size suitable for engagement in one of the recesses is set rigidly into the plate 16. The driver guide may be lifted sufliciently to disengage the flange 26 from the pin 56, whereupon the driver guide may be moved forwardly or rearwardly to the desired position, and the flange again seated upon the plate 16 with the pin 56 in the appropriate recess 5d. A cap 58, provided with an opening 60 to accommodate the nozzle of the driver guide, is then placed upon the flange 26 and secured by screws 62 on gaging threaded holes 64: in the jack top. With this construction the driver guide may readily be adjusted to any required position longitudinally of the heel and may then be secured against any possibility of move ment.

The driver 36 is of rectangular (r0ssse(- tion and the guiding passage in the driver guide is of a corresponding shape. with the exception of the upper end, wherea portion of the passage is drilled out into a circular shape of a size suitable for the head of the attaching nail to be used and a depth sufiicient to include the length of the nail, as shown at 65. In Fig. 1 the nail is indicated indotted lines resting in the round open ing in the upper end of the driver guide inv position to be driven, while the full lines 36 indicate the nail as it isactually driven into the work. Before driving the nail, the shoe occupies such a position on the jack that the rear portion of the upper is drawn snugly against the back of the jack. Inasmuch as the pointot the nail, shown in dotted lines in Fig. 1, lies slightly forward of the point wherethe1 head of the nail must leave the bore 65, the shoe must move slightly to the rear relatively to the jack while the nail is being driven. There is suthcient spring or yield in the jacl: and heel support 14 to permit this, and the operation is probably aided by some springing of the nail itself. In any event, it has been found that the nail is driven successfully and that it has greater holding power than when driven in the way which has heretofore been customary. j

The upper end of the driver 3% is narrowed, as shown at 38, the object being to permit the nail head to be sunk into the insole until it is flush or below the surface thereof without making an unnecessarily large defacing mark in the sole.

Referring now to Fig. 5, the lower end of the straight driver 20 is threaded at and is screwed into a suitably formed block '72 which rests upon the reciprocable plunger head 74, being retained in operative relation thereto by the plate 7 6 which is slotted to permit transverse adjustment of the driver. The block 72 is split part way through, as shown at 78, and the two sides sprung together to cause the threaded end of the driver to fit tightly, in order that there may be no danger of its turning accidentally and varying the adjustment.

The upper end of the driver is slotted at 80, and a screw driver 82 or other suitable implement may be inserted in the top oi the guide 18 to turn the driver 20 to adjust it up or down, as conditions may require.

lizlaving described my invention, what I claim as new and desire to secure by Letters Patent of the United States is l. fin inside nailing heel attaching ma chine comprising a work support construct ed and arranged to enter the heel end of a shoe, cooperating pressing means for holding a heel upon the shoe while it is being attached, a curved driver guide mounted in the work support with its exit portion at an inclination to the surface of the work upon the support, a curved, reciprocable nail driver contained in the guide, and means for advancing the driver until its point engages the shoe, whereby a. heel attaching nail may be completely driven in an inclined direction from the inside of the shoe with a single stroke of the driver.

2. An inside nailing heel attaching maprising a nail and driver guiding member having a curved guide passage therein, a curved nail driver in said guide passage and guided solely thereby, and rectilinearly mow able means for imparting sufficient longitudinal movement to the driver to drive a nail completely out of the guide passage.

a. A nailing machine having means for driving a nail at an inclination to the surface of the work at which it enters comprising a nail and driver guiding member having a curved guide passage therein, a curved nail driver reciprocable in said passage and guided solely thereby, and an actuator for advancing the driver to drive a nail.

5. In a machine of the class described, a nail and driver guide having a curved driver guiding passage and a straight nail guiding passage of a length at least equal to that ot the nail to be driven.

6. In a machine of the class described, the combination. of a driver supporting device, and a nail driver having threaded engagement with the supporting device, one end of the driver being formed to cooperate with a tool, whereby the effective length of the driver may be adjusted by turning into or out of its support.

7. In a machine of the class described, the combination of a driver supporting device, and a nail driver one end of which is threaded into the supporting device and the other end of which is formed for interlocking engagement with a tool for turning the driver.

8. In a machine of the class described, the combination of a driver supporting device, and a nail driver one end of which has threaded engagement with the supporting device and the other end of which is provided with a screw driver slot.

9. In a machine of the class described, the combination of a driver and a driver support into which the driver is adjust-ably threaded, said support comprising a block split and sprung together to grip the threaded end of the driver tightly, to insure the preservation of the adjustment.

10. In a machine of the class described, the combination of: a driver support, a driver guide, and a nail driver threaded into said support and having a transversely slotted nail engaging end in said guide.

11. In a machine of the class described, the combination of a plurality of independ ent driver supports and a nail driver having threaded engagement With each of said supports, the supports and the drivers held thereby being adjustable transversely toward and from each other and each driver being adjustable in its support to vary its effective length.

12. In a machine for attaching a heel to a shoe,- the combination of a curved nail driver, means for guiding the driver for movement in a curved path, said guiding means with its contained (lllVOl being adjustable in position longitudinally of the 15 heel, and means for actuating the driver to drive a heel attaching nail in any position of adjustment of: said guide.

In testimony whereof I have signed my name to this specification.

RALPH C. SIMMONS.

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