US1134279A - Automatic heel-nailing machine. - Google Patents

Description

B. F. MAYO.

AUTOMATIC HEEL NAILING MACHINE.

APPLICATION FILED FEB. 24,1910. I..I.34,279. Patented Apr.6,1915.

3 SHEETS-SHEET 1.

17,5/ F VWM/5555. 24d/ @24M jj @Mc THE MORRIS PETERS 60,. PHOTC-LITHO., WASHINGTON. D. c

B. F. MAYO.

AUTOMATIC HEEL NAILING MACHINE.

APPLICATION FILED IER. 24, 1910.

m3845279. Patented Apr. 6, 1915.

3 SHEETS-SHEET 2.

III"

MTA/5555 @i WWI/rif?. me 34M 5W F. lvl/wo. AUTOMATIC HEEL NAILING MACHINE.

APPLICATION FILED FEB. 24, I9I0.

Patented Apr.6,1915.

3 SHEETS-SHEET 3.

WTA/[5555.

unire spans naar orten BENJAMIN E. MAYO, OF SALEM, MASSACHUSETTS, ASSIC-NOR TO UNITED SHOE TEACHINERY COMPANY, OE PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

AUTOMATIC HEEL-NAILING MACHINE.

Lid-4,279.

Specification of Letters Fatent.

Patented Apr. 6, i915,

T0 all whom t may concern Be it known that I, BENJAMIN F. MAYO, a citizen of the United States, residing at Salem, in the county of Essex and State of Massachusetts, have invented certain Improvements in Automatic Heel-Nailing Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

rIhis invention relates to heeling machines.

Ileeling machine, such as are now generally used in the manufacture of boots and shoes, require a heel blank which is to be attached to a boot or shoe, such as a heel or a top lift, to be either placed by hand in attaching position or to be moved into attaching position by a carrier, in which the blank has been before inserted by hand. In such machinos nails are generally brought into inserting position by a movable nail carrier which is also actuated by hand, said nail carrier being supplied with nails at a point removed from the nail-inserting mechanism. T he necessity of manually performing operations such as those mentioned detracts considerably from the speed of the machine, even if the machine operator is provided with one or more attendants for performing some of them, and it is of course desirable to dispense with attendants as far as possible.

The primary object of the present invention is the provision of a machine which, apart from supplying and removing a boot or shoe to be heeled and starting the machine, will be entirely automatic in performing the operations incident to attaching a heel. It will be understood, however, that features of the invention are capable of ad- `vantageous use in machines wherein some of the operations that are herein performed automatically are performed by hand or by non-automatic mechanism.

The invention will be described with reference to its embodiment in a machine for securing heels and top lifts to boots or shoes. It will be understood, however, that the present embodiment is illustrative only and that the invention may be embodied in machines of other types. The machine shown includes provision for placing a heel in attaching position and mechanism for attaching it to a boot or shoe, said mechanism comprising means for pressing the heel upon the heel seat and means for driving nails through the heel into the heel seat. The machine also includes nail carrying means for bringing nails into driving position. To permit the attachment of a top lift, mechanism is provided for modifying the operation of the heel pressing means to compensate for the thickness of the top lift so that said means may be employed to spank the top lift upon the ends of the nails inserted in the heel. Provision is also made for placing a top lift in attaching position. In the embodiment of the invention herein shown the parts above referred to are automatically actuated.

In providing a machine capable of performing automatically the several operations incident to securing a heel to a boot or shoe and thereafter securing a top lift to the attached heel it is a matter of importance to arrange the parts so that they will be actuated at such times that one will not interfere with another. The several devices for bringing the working materials such as the heels,

top lifts and attaching nails, into operative relation to the attaching mechanisms must be actuated so that they will not conflict with the attaching mechanisms or with each other. At the same time to secure a practically successful machine due regard should be paid to the selection of suitable mechanisms for actuating the several parts of the machineu For example, the heel attaching mechanism is required to act with considerable force in pressing the heel upon its seat and in inserting the nails, and its actuating mechanism should be so designed as to furnish by an easy movement of its working parts the power required for these successive operations. Furthermore, it is desirable that the arrangement be such that the several mechanisms which comprise the machine will act normally in a predetermined order so that under ordinary circumstances all parts of the machine will be brought into operation at their proper time.

To secure the ends above referred to I employ a plurality of distinct driving means for operating automatically the several mechanisms comprised in the present machine. The use of this feature simplifies the construction of the machine and permits each vmechanism to be actuated in the manner and by that arrangement of mechanical parts which the nature of said mechanism order or relation and the arrangement is preferably such that this order is normally insured. The construction disclosed is such that a single movable controlling device governs the action of the two driving means, said controlling device being arranged so that by successive movements thereof the driving means are brought into operation in a predetermined sequence. As shown said controlling device, arranged for actuation by the operator, is constructed to bring into action by a preliminary movement the mechanism for placing a heel in attaching position, and by a further movement to bring the heelattaching means into action. To bring a top lift'into attaching position another distinct movement of the controlling dev-ice is required. By a fourth movement the means for attaching the top lift to the attached heel is brought into action, thus completing the heeling operation.

In the drawings,-Figure 1 is a View in side elevation of a `heel attaching machine constituting one embodiment of thepresent invention; Fig. 2 is a view in horizontal section of the machine shown in Fig. 1 illustrating mechanism for presenting heels, top lifts and nails to the attaching mechanism; Fig. 3 is a view in plan of the nail block and parts adjacent thereto in the machine shown in Fig. 1; Fig. 4 is a view in plan of a holder for heels or top lifts; Fig. 5 is a perspective view illustrating an auxiliary driving shaft and mechanism for controlling the application of power therefrom; Fig. 6 is a view in front elevation with parts in `vertical section of a portion of the mechanism shown in Fig. 5; Fig. 7 is a view in side elevation of certain elements shown in Fig. 6; Fig. 8 is a perspective view illustrating an .element of the clutch mechanism shown in Figs. 5, 6 and 7 and Fig. 9 is a perspective view illustrating another element ofsaid clutch mechanism.

Referring to the drawings,l the machine shown in Fig. 1 comprises a frame 10 upon which is journaled a main driving shaft 12. Transmission of power to said shaft from a driving wheel 13 is controlled by a clutch 15 .which may be of ordinary construction and which is indicated diagrammatically in suitably arrangedv vertical driver passages.Y

A beam 22 is pivotally mounted upon the upper end of the frame and yhas adjustably secured thereto at its front end a slide 24 upon which is pivotally sustained a jack 26. A toggle 28 is mounted at vthe rear of the machine and is connected by means of links 30y and 32 with the rear end of the beam 22. The links 30 and 32 are pivotally connected and are held from flexing by a link 34 pivotally connecting the lower end of the link 32 with the frame and a linlr'36 pivotally secured to the connection between linlrs 30V and 32 and also pivotally connected to the upper end of a bell-crank lever 38 pivoted at 40 upon the machine frame. The bellcrank lever 38 is controlled by automatic mechanism to be hereinafter referred to.

The toggle 2S is actuated to impart vertical movement tothe jack 26 by means ofk a lever 4()a Ipivoted at 42a upon the frame and having upon its lower end a cam roller coperating with a cam upon the cam shaft 14.

A spindle 42 is arranged at the front of the machine for vertical movement in a guideway formed beneath the nail block 20. 'Ihe spindle 42 raises and lowers drivers which operate in the driver passages of the nail block for driving nails through the heel into the heel seat. Said spindle is vertically reciprocated by a toggle comprising members 44 and 46. The lower toggle member 46 is provided with a rearwardly eX- tending arm connected by means of a link 48 with a lever 50. rIhe lever 50 is pivoted at 51 and is provided at a point between its ends with a cam roller engaging a cam fixed upon the cam shaft 14, this cam being so formed that one reciprocation is imparted to the spindle 42 in a single rotation of said cam shaft.

In the machine herein shown the nail drivers and nails are moved together into driving position above the upper end of the spindle 42. A horizontal arm 52 having a handle 53 is mounted for pivotal movement about a stud 54 secured to the frame 10 and said arm 52 sustains a nail carrier 56. Said nail carrier 56 carries beneath it a driver plate 58 which is formed to interlock with the upper end of the spindle 42. The driver plate 58 and the drivers secured thereto are arranged for movement relatively to the nail carrier 56 to permit nails to be driven from the driver passages of said nail carrier through the driver passages of the nail block 20 into the heel. rThe drivers secured to the driver plate 58 normally project part way into the passages of the nail carrier 56 and serve to support in said passages nails which are supplied thereto. Nails are supplied to the carrier from a foot plate 60 to which they are automatically supplied from any suitable assorting apparatus. 1t will be understood that nails are delivered to the nail carrier 56 in the position of the arm 52 shown in Fig. 2 and that said arm is then moved to bring the nail carrier and the drivers carried thereby into alinement with the spindle 42.

A heel holder 62 and a top lift holder 64 are mounted above the nail plate 20 for horizontal pivotal movement about the stud A magazine 66 for heels is supported upon one side of the nail block from the stud 54 and a magazine 68 for top lifts is similarly supported on the opposite side of the nail block. The top lift holder and heel holder are connected for movement in unison by means of a link 70. 1t will be understood that the holders are moved alternately into position over the nail block and while one holder is in attaching position the other is in position to receive a blank from its magazine. While the heel holder 62 is in attaching position the heels in the magazine 66 are supported by a pivoted plate 72 which is held yieldingly in position beneath the magazine 66 and is moved from beneath the same in the movement of the heel holder into receiving position, as indicated in Fig. 2. The top lifts in the magazine 68 are supported while the top lift holder is in attaching position by a wing 74 formed upon the top lift holder. Each holder comprises a forked rear gage 76 and a breast gage 78. The breast gage of the heel holder is connected to a lever 80 mounted for pivotal movement on the heel holder and having connected thereto a spring 82 for pressing the breast gage against the heel. The breast gage is moved away from the rear gage in the movement of the heel holder into receiving position by a stop 84 supported upon the frame of the machine in position to engage the lever 807 as indicated in Fig. 2.

The breast gage of the top lift holder is held yieldingly toward the rear gage by a spring 86 connected to the breast gage by a link 88. The breast gage of the top lift holder is moved away from the rear gage in the movement of the holder into receiving position by a Xed stop 90 arranged to be engaged by the spring 86 to limit movement of said spring, as indicated in Fig. 2. 1t will be seen that in the movement of the top lift holder and the heel holder beneath their respective magazinesv the breast gage of each holder is moved away from the rear gage to permit a top lift or heel to descend into position in the holder. 1n the movement of the holders away from receiving position the breast gages are moved automatically toward the rear gages to clamp the heel or top lift in position.

The mechanism for automatically operating the heel holder, the top lift holder and the nail carrier will now be described. An auxiliary driving shaft 96 is ournaled upon the frame 10, it being continually rotated by a belt and pulley connection with a convenient source of power. Below the auxiliary driving shaft 96 is a clutch shaft 98 having loosely mounted thereon a gear 100 meshing with a gear 102 on the auxiliary shaft. rlhe gear 100 is clutched to the clutch shaft 98 by a clutch mechanism to be described. The clutch shaft 98 is provided on the right-hand end, viewing Fig. 6, with a disk 104 formed integrally therewith. The disk 104 has secured thereto a crank pin 106 upon which is mounted for relative turning movement a slide block 108 received in a vertical guideway formed in a slide block 110. The slide block 110 is rigid with a rod 112 sliding in a horizontal. bore formed in the frame 10. It will be seen that by the rotation of the clutch shaft 98 a reciprocatory movement will be imparted to the slide block 110.

vertical rock-shaft 114 is journaled for oscilla-tory movement on the frame 10. The rock-shaft 114 has secured thereto at its lower end an arm 116 connected by a link 118 to the slide block 110. The upper end of the rock-shaft 114 has secured thereto two arms 120 and 122. The arm 120 is secured by an adjustable link 124 to the heel holder 62. The arm 122 is connected by a link 126 to the arm 52 of the nail carrier. It will be seen that with this arrangement in a single reciprocation of the slide block 110 the heel holder, the top lift holder and the nail carrier will be reciprocated between receiving position and delivering position.

The mechanism for clutching the gear 100 to the clutch shaft 98 will now be described.

rFhe clutch shaft 98 has keyed thereto on l the inner side of the disk 104 a collar 128. The gear 100 is provided with a circular recess in which one end of the collar 128 lies. The collar 128 is provided with a reduced portion 130 having siX inclined surfaces between which and the inside of the gear 100 are arranged cylindrical rollers 132. The rollers 132 in their operative positions rigidly lock the gear 100 to the collar 128. The rollers 132 are controlled in position by a clutch dog 134. The dog 134 is mounted for turning movement upon the collar 128 and is provided with six lateral projections 136 lying between the rollers upon the interior of the gear 100. rllhe clutch dog 134 is normally impelled to press the rollers 132 into wedging engagement with .the cooperating surfaces on the gear 100 and the collar 128 by means of springs 138. Each of the springs 138 is secured at one end at 140 to the clutch dog 134 and at the other end to a pin 142 projecting from the collar 128. It will be seen from Fig. 7 that the springs 138 tend to turn the clutch dog 134 in a left-handed direction, movement in which direction will cause the rollers 132 to clutch together the gear 100 and the collar 128. The clutch mechanism shown is provided with a brake 144 pivoted at 146 to the frame 10 and pressed against the exposed edge of the collar 128 by means of a spring 148. The brake 144 may be found desirable to arrest promptly the movement of the driven parts after the gear 100 is unclutchel from the shaft 98.

For the purpose of controlling the clutch dog 134, there is provided a swinging arm 150 having at its upper end a lyielding member 152 adapted to be engaged by shoulders 154 upon the clutch dog and arrest turning movement of said dog. The arm 150 is held normally in operative relation to .the dog 132 by a spring 156 and is withdrawn from operative position by a rod 158 adjustably connected with a treadle 160. The rod 158 is provided with a notch formed to receive a pin 162, angular in cross-section, secured to the arm 150. Above and to the rear of the pin 162 on the arm 150 is a second pin 164 which, as the arm. 150 is drawn forwardly by the rod 158, moves said rod 158 out of engagement with the pin 162 and thus allows the arm 150 to be drawn rearwardly by the spring 156. It will be seen that this construction insures that the clutch shaft 98. will be stopped at the end of a half revolution.

The clutch 15 for the main driving shaft 12 may be of the type of that described in connection with the auxiliary driving shaft. The clutch 15 is controlled by an arm 166 secured to a shaft 168. Rigid with the shaft 168 is a lug 17 0 which is arranged to be engaged by a stud 171 on the rear end of the treadle 160. An arm 172 is also secured to the shaft 168 and in the position of the parts shown in Fig. 1 is held from forward swinging movement by a locking link 174 connected at its front end for movement with the toggle 44, 46 and at its rear end connected by the link 173 with the rear end of the treadle 160. This controlling mechanism 'for the clutch 15 may be preferably substantially the same as the controlling mechanism shown in an application for United States Letters Patent filed January is, i902, serial N0. 90,313.

The connections shown between the treadle 160 and the two clutch mechanisms for the main driving shaft andthe auxiliary treadle the rear end thereof comes in contact with this lug and raises the arm 166 to render the clutch 15 effective, the locking link 174 having been previously disengaged by the link 173.

Inasmuch as the mechanism for attaching a heel is used also to spank a top lift on the attached heel, it is necessary to make provision for the additional thickness ofthe top lift. To compensate for the thickness of the top lift the jack is given a different limit of movement in the top lift spanking operation from that which it has in the heel attaching operation. The mechanism shown for this purpose includes the bell-crank lever 38 above described. This lever is connected by a link 92 with a lever 94, the lower end of the link being adjustably secured in a curved slot formed in said lever. The lever 94 is pivoted for movement about a pin 51 and is provided at its forward end with a Cam roll engaged by a cam upon the cam shaft 14. This cam is so formed as to impart a single reciprocation to the link 92 in a single rotation of the cam shaft.

In the operation of the machine shown, a shoe having been placed by the operator upon the jack 26 and properly adjusted thereon an initial depression is imparted to the treadle 160. This causes the shaft 98 to be given half a revolution and through the connections described moves the heel holder from beneath its magazine into position beneath the shoe and also moves the nail carrier 56 together with the drivers carried thereby into position beneath the nail block 20, the drivers in such movement being clutched to the spindle 42. The shaft 98 stops with the heel in attaching position and the nails and drivers in nail inserting position. To perform the next step in the cycle of operations of the machine a further depression of the treadle 160 is required. This brings the clutch 15 into action and by means of the mechanism described moves the jack 26 downwardly to press the shoe firmly upon the heel and hold it under pressure. While the heel is thus held under pressure the nails are inserted Y therethrough into the heel seat by an elevation of the spindle 42 by the mechanism described. As soon as the clutch 15 is placed in operation, the operator allows the treadle 160 to rise, thus permitting the clutch controlling arm 166 to descend into position to throw the clutch 15 out of operation at the end of a single revolution of the shaft 12. In this single revolution of the shaft 12 the jack is lowered and raised, and the spindle 4t2 is raised and lowered. At the end of this operation of attaching a heel, the shoe and heel are in a position raised from the nail block 20 and the spindle 42 is in its lowermost position. rlhe treadle 160 having been allowed to return to its upper position until the rod 158 is connected with the pin 162 on the clutch controlling arm 150, the next step in the cycle of operations of the machine is performed by a second partial depression of the treadle 160. This causes a second half revolution to be imparted to the shaft 98 and causes the heel holder to be returned to position beneath its magazine, the nail carrier to be moved into position to receive nails from the foot plate 60 and the top lift holder to be moved from beneath its magazine into operative position beneath the attached heel. rilhis step in the operation of the machine ends with the top lift in position to be attached by being forced on the ends of the attaching nails which are left exposed for this purpose in the heel atta ching operation. A further depression of the treadle 160 causes a second revolution to be imparted to the main shaft 12. rlhis causes the bell-crank lever 88 to be moved to shorten the effective length of the connection formed by the links 30 and 32. rlhe jack 26 is then forced downwardly by the toggle 28 to spank the top lift on the heel, the thickness of the top lift being compensated for, as above described, by the bell-crank lever 38. The cycle of operations of the machine closes with the jack in its raised position whereupon the shoe is removed from the machine. l

lt will be observed that while the mechanisms for presenting heels, top lifts, and nails respectively to the attaching mechanism are automatically operated they are under the control of the operator separately from the attaching mechanism. This permits an operator to make sure that the presenting mechanisms have performed their functions properly before he brings the attaching mechanism into operation. lt will be seen that the use of a single controlling device is not necessary to secure the separate control referred to, as the presenting mechanisms and the attaching mechanism could be controlled by separate devices and it would be within the present invention to make this modification, as well as other modifications which will be apparent to those skilled in the art. The use of a single controlling device, however, may be found desirable as increasing the speed of operation of the machine. lt will also be seen that its use insures that in its normal operation the presenting mechanisms and the attaching mechanism will be successively brought into action in a certain order.

Having described my invention what I claim as new and desire to secure by Letters Patent of the United States is l. A heeling machine having, in combination, mechanism for automatically attaching a heel to a shoe, driving means for operating said mechanism, a magazine for holding heels, mechanism for automatically taking a heel from said magazine and presenting it to said attaching mechanism, and driving means for said presenting mechanism arranged to be brought into action by the operator separately from said first named driving means.

2. A heeling machine having, in combination, mechanism for automatically attaching a heel to a shoe, driving means for voperating said mechanism, mechanism for automatically presenting a heel to said attaching mechanism, driving means for said presenting mechanism, arranged to be brought into action by the opera-tor separately from said first named driving means, and a single successively operative controlling device for said two driving means.

3. In a heeling machine, the combination of a horizontally stationary nail block, mechanism for automatically presenting a heel to said nail block,y automatic mechanism for attaching a heel to a shoe, separate driving means for said two automatic mechanisms, and a common controlling means for said two separate driving means constructed and arranged to effect operation of the driving means for the presenting mechanism and then permit a dwell or rest in the action of said two driving means between the operation of the presenting mechanism and the operation of the attaching mechanism.

l. In a heel attaching machine, the combina-tion of a shoe support, a heel holder, automatic means for effecting relative movement of said support and holder to locate the shoe and heel in proper relation to each other, automatic mechanism for attaching the heel to the shoe, and a single controlling device arranged to set said automatic means in operation during the initial portion of its movement and to set said automatic mechanism separately in operation at the will of the operator upon further movement of the controlling device.

5. A heeling machine having, in combination, mechanism for automatically inserting heel attaching nails, mechanism for thereafter automatically modifying the action of said inserting mechanism to permit a top lift to be spanked on the ends of the attaching nails, driving means for operating said mechanisms, mechanism for automatically presenting a heel to said inserting mechanism, mechanism for automatically presenting nails to said inserting mechanism, mechnism for automatically presenting a top lift to said inserting mechanism, and driving mea-ns for said presenting mechanisms separate from said first named driving means.

6. In a machine of the class described, the combination with a shoe support and mechanism for automatically attaching a heel to a shoe upon said support, of independently operable automatic mechanism for presenting a heel and attaching nails to said attaching mechanism.

7. In a heel attaching machine, the combination of heel attaching mechanism, heel presenting mechanism, power operated means for driving said attaching mechanism, power operated means for driving said presenting mechanism, and a unitary means for starting operation of said two' driving means separately, at the will of the opertor, in predetermined'order.

8. In a heeling machine, the' combination of heel attaching mechanism', heel presenting mechanism, nail presenting mechanism for presentingnails to the nail block, and means for' automatically and'` simultaneously actuating said presenting mechanisms.

9. In a heeling machine, the combination of heel `attaching mechanism, a nail block, heel presentingmechanismfnail presenting mechanism forv presenting nails to the lnail block, means for automatically and simultaneously actuating said i presenting mechanisms, and yseparatelyl controllable means for thereafter actuating said attaching mechanism.

10. In a heeling machine, the combination of a nail block, an opposed Work support, means forgiving said'nailV block and work support a movement of approach and separation, nail presenting means movable from naily receiving to nail delivering position with respect to the nail block, a'heel holding magazine, heel-presenting means movable from the magazine to heel presenting position with respect to the nail block, driving means for said two presenting means, and a unitary device for starting the action of said driving means to present nails and a heel to the heel block and then permit the parts to come to rest, and by further subsequent operation to start the relative movement of the work support and nail block.

11. In a heeling machine, the combination of a nail block, an opposed work support, means for relatively moving the work support and nail block, heel presenting mechanism, nail presenting mechanism, an auxiliary shaft, means for operating it independentl of said first named means, connections between the auxiliary shaft and said presenting mechanisms, and a unitary device for causing the auxiliary shaft to operate the presenting mechanisms, and thereafter to operate said first named means.

12. In a heeling machine, the combination of a nail block and opposed work support, means'for relatively moving them in a direction'of approach and separation, heel presenting and nail presenting mechanisms, an auxiliary shaft for operating said two mechanisms, means for independently operating said shaft,1 aV treadle, and connections between the treadle and auxiliary shaft and between the treadle and said first named means constructed and arranged to cause the operation' of the auxiliary shaft upon partialmovement of the treadle and operation of said first named means upon further depression thereof.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

BENJAMIN F. MAYO.

I/Vitnesses z HERBERT W. KENWAY, JAMEs R. HODDER.

Copies'ot this patent may be obtained vfor piire cents each, by addressing the Commissioner of Patents,

i "Wa`Shin'gton,D.C.

Images