US1077929A - Heel-pricking machine. - Google Patents

Description

J. E. GLIDDEN, DECD. s. 1: GLIDDEN, ADMINISTRATRIX. HEEL PRIGKING MACHINE.

APPLICATION FILED NOV. 8, 1910.

Patented Nov. 4, 1913.

2 SHEETS-SHEET 1.

J. E. GLIDDEN, DEGD. v S. E- GLIDDEN, ADMINISTRATRIX.

HEEL PRIGKING MACHINE. APPLICATION FILED NOV. 8, 1910.

Patented Nov. 4, 1913.

SHEET 2.

2 SHEE UNITED STATEQATENT OFFICE.

JOHN E. GLIDDEN, INSANE, 0F BEVERLY, MASSACHUSETTS, BY SADIE E. GLIDDEN, OF

BEVERLY, MASSACHUSETTS, GUARDIAN; SAID SADIE E. GLIDDEN, ADMINISTRA- TRIX OF SAID JOHN E. GLIDDEN, DECEASED, ASSIGNOR TO UNITED SHOE MA- CHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

HEE'L-PRICKING MACHINE.

To all whom; it may concern:

' Be it known that JOHN E. GLIDDEN, of Beverly, in the county of Essex and State of Massachusetts, insane, invented certain Improvements in Heel-Pricking 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.

This invention relates to machines for pricking heels or other articles to form perforations therein for the reception of attaching nails.

In attaching heels toshoes, for instance, it is a common practice to drive the attaching nails directly into and through the heels,

without first pricking the heels but, as is well understood by those skilled in the art, with some classes of heels it is at times desirable, or even necessary, to prick the heels in order to avoid the danger of the attaching nails being crippled or deflected from their proper course while being driven.

The general object of the present invention is to produce an improved machine which will effectively and rapidly accomplish the results above indicated.

To this end one feature of the invention consists in the provision of means for supporting a heel or similar blank while driving or forcing it upon a gang of awls, or while driving a gang of awls into it. The means for effecting relative movement between the awls and the blanks to be pricked or pierce-d preferably comprises a follower engaging the heel seat and such follower may be angularly adjustable to permit it properly to engage the seat surfaces of heels of different pitches and forms while accurately positioning them with relation to the awls.

In a preferred embodiment of the invention, as illustrated herein, the awls are so positioned with respect to the cooperating parts that they enter the tread surface of theheel blank at an oblique angle to such surface. This is for the purpose of causing the attaching nails subsequently driven to take an inclined direction, whlch is often Specification of Letters Patent.

vApplication filed November 8,1910.

Patented Nov. 4, 1913.

Serial No. 591,314.

desirable. Another feature of the invention, therefore, consists in arranging and mounting the awls in such a manner that they may enter the heel at the desired angle without danger of springing or breaking. This result may be secured in accordance with the present invent-ion by providing the lower ends of the awls with suitable bearing surfaces, herein shown as balls, which are received in slots or in a chamber in a driving plate while the upper ends of the awls are guided in a suitable templet. With this construction as the driving plate is ad vanced the lower ends of the awls are permitted to move laterally in the direction of inclination of the awls.

In machines used for attaching heels to shoes the heel is generally positioned, with respect to the rearmost attaching nail, such nail being placed at the same distance from the rear of the heel, irrespective of the size or shape of the heel. The present invention accordingly contemplates means for positively positioning a heel blank to be pricked, with reference to the relation between the curved or'rear end of the blank and the rearmost awl of the gang, to the end that the holes in the pricked heel will register accurately with the driver passages in the heel attaching machine.

In the drawings: Figure 1 is a view in side elevation, showing the general structure of the machine; Fig. 2 is a plan view of a portion of the machine; Fig. 3 is a central vertical section on the line 38 of Fig.

2; Fig. 4 is a transverse section on the line 44 of Fig. 1; Fig. 5 is a perspective, partly broken away, showing a gang of awls and one form of driving plate; Fig. 6

is a view, similar to Fig. 5, showing an other form of driving plate; Fig. 7 shows, in perspective, theyielding plate engaging the breast of the blank; and Fig. 8 is a etail, in perspective, showing the member engaging the curved end of the blank.

The bed or frame 10 of the machine is suitably supported, as upon legs 12, and carries the working parts. A main driving shaft 14 is mounted in hearings in the frame 10 and is provided with a belt pulley 16 and a pinion 18. A hand wheel 20 is also keyed to the shaft 14 and may be used for turning the machine by hand when desired.

Meshing with the pinion 18 is a gear 22 upon a crank shaft 24. A sliding carriage 26 is guided in ways formed in the frame 10, and is retained in said ways by gibs 28. A connecting rod 30 is interposed bet-ween the carriage 26 and the cranked portion of the shaft 24.

The carriage 26 is provided with an upwardly extending yoke 32, see Fig. l, apertured to receive the stem 3% of a follower 36. Suitable means, such as the lock nuts 37, may be used to secure the stem of the follower in any desired position of adjustment in the yoke 32. Thus the followe may be readily adjusted upon its carriage 26 to accommodate heels of different heights.

The preferred construction of the follower is best shown in Figs. 2 and 3. A. heel seat die 38 has a face conforming to the corresponding face of the blank to be operated upon. The rear of the die 38 is circular, as shown in Fig. 3, and is provided with a tongue 40 which is received in a corresponding groove in the follower 36. The follower 36 is split and screws 42 serve to draw the two sections thereof together to clamp the tongue 40 therebetween. It will be seen that the heel seat die 38 is thus adjustable angularly in a vertical plane and may be so set as properlyto engage the seat'surfaces of blanks of different'pitches and angular relations as between seat and tread surfaces, without necessitating a change of dies.

A bracket in is secured to the frame 10 near the left-hand end thereof, as viewed in Figs. 1, 2 and 3, by bolts 46 or other suitable means. The upright face of the bracket a l is provided with an undercut guide to receive an awl driving plate 48 provided with a gang of awls 50. It will be seen that the awls are longitudinally stationary, the follower being moved toward the awls for presenting the heel to and forcing it upon them.

Forguiding the awls and stripping the pricked heel therefrom a templet 52 is provided. The bracket a l is provided with longitudinal bearings to guide the sliding rods 54, which carry at their ends a templet frame comprising uprights 56 connected at their upper ends by a strut 58. The strut 58 is notched at its center to receive the reduced portion 60 of the adjusting screw 62, the lower end of the screw being threaded into the templet 52, and a lock nut 64 being providedto preserve theadjustment. Eis will be apparent from Fig. 3, the construction just described permits of ready adjustment of the vertical position of the templet 52.

The guide rods 54 are surrounded by coinpressi'oii springs 66, one end of each spring 66 bearing against a shoulder upon its guide rod, and the other end bearingagainst a stationary lug 68 upon the frame 10. Each guide rod 54 passes loosely through its corresponding lug 68 and is provided with a collar 70 to limit the longitudinal movement of the guide rod under the pressure of its spring. By means of the guide rod springs 66 the templet 52 is normally held in the position illustrated in Fig. 3, but when a heel 7 2 is placed in the position shown in said figure and the follower 36 moved to the left, the heel will be forced upon the awls while the springs 66 are compressed, allowing the templet 52 to yield before the advancing heel blank. After the heel is pricked, the follower recedes toward the right in Fig. 3, the heel being held closely against the follower by the pressure of the springs 66. It will be understood that the heel blank is underthe pressure of the being stripped from the awls and this is an important feature. stripped from the awls without being held then a heel blank is under pressure there is considerable liability of the heel lifts separating, an occurrence which is very undesirable. It has been found, however, that if the blank is held under pressure while being stripped the difficulty is overcome and there is no danger of separation of the lifts. The springs 66 are made heavy enough to exert considerable pressure upon the heel while the latter is .bein driven u Jon and stri) ed from the aw s.

For the purpose of pricking the holes in a blank at an angle to the tread face thereof, forexample, one face of the templet 52 may be inclined, as shown in Fig. 3, it being understood that the face of the blank will be placed against the inclined face of the templet when the blank is to be pricked.

Some or all of the holes in the templet for guiding the awls 50 may also be inclined, and, In order to permit the awls to follow said holes a specially constructed awl driving plate is necessary.

The awl driving plate 48 has secured to its face a block 47 which may be chambered as shown at 76 see Fi 6 and which is provided with a cover plate 78. The lower ends of the awls 50 are provided with balls 80- which are located within the chambered portion of the block 7-1 and the cover plate 7 8 is slotted as at 82 to allow the passage of the stems of the awls therethrough. The slots 82 extend in the direction in which it is desired to incline or deflect the awls, be-

' By providingthe balls 80 upon the lower or rear ends of the awls the latter are well supported while they are being driven into the heel but there is very little resistance to their sliding laterally within the driver block chamber and consequently little likeli hood of the awls being bent or broken. It should be understood that the exact arrangement of the awls shown, with respect to their relative inclination,is not essential to the invention, the only requisite being that each of the slots 82 he in the same direction as that in which the awl passing therethrough is to be inclined or deflected.

In Fig. 5 is .illustrated an alternative con struction in which instead of a single chamber 76 in the block 74 there is a plurality of guide recesses or chambers 84, there being one such recess for each awl and thesaid recesses or chambers having the same arrangement as the slots 82 in the cover plate 78.

In order to place the heel quickly and accurately in position to be operated 'upon by the pricking mechanism the following devices are provided. A guideway 86 ex tends transversely of the machine in front of the templet 52 as viewed in Fig. 4. A lateral extension 88 from one of the guide posts 56 may form a portion of one side of the guideway while a plate 90 forms the op-' posite side thereof. As shown in Fig. 4 the plate 90 may extend inwardly across'the lower edge of the heel seat to support the heel against the templet, thus preventing it from becoming displaced. A series of heels may be successively placed in the guideway, each heel being advanced into position to be pricked by the following line of blanks, it thus being unnecessary in the feeding operation to touch the heel next to be operated upon.

Movement may be imparted'to the line of heels in the guideway by a lever 92 pivoted at 94 and arranged with its free end at the entrance to the guideway to engage the first heel in the line. By means of any suitable mechanism the lever 92 may be oscillated at the proper times to impart feeding movement to the line of heels. The free end 96 of the lever 92 is preferably pivoted to the main portion of the lever as at 98, a springlOO being attached to the two portions for the purpose of normally holding them in alinement. If, however, excessive resistance should be encountered in the feeding movement the spring will yield, thus preventing breakage. It will thus be seen that it is not necessary for the operator to place his hands in such position as to endanger them while operating the machine. As a further safeguard, a shield 102 is supported by a rod 104 and guards the operators hands from the reciprocating follower.-

To the end that the heel blank may be accurately positioned and securely held while it is being pricked, the following mechanism is provided. A slide 106 is provided with a forked end 108 adapted to engage the curved end of .the heel and accurately center it. The upper end of the slide 106 is preferably slotted at 110 for the purpose of permitting vertical adjustment of the said slide in .a yoke 112, :the slide being secured in adjusted position by a screw and hand wheel 114. Said screw and hand wheel are carried by a plunger 116 surrounded by a spring 118. The lower end of the spring bears upon a shoulder on the lower end of the plunger and the upper end of the spring bears within a recess in the yoke 112. In order to permit exact lateral adjustment of the heel "blank with respect to the awls, the forked portion 108 isconnected to the slide 106' by a screw. and slot connection 120, as clearly shown in Figs. 4 and 8. This also permits accurate adjustment for unsymmetrical and various special forms of heels.

To facilitate the placing of heels in position and their accurate centering with relation to the pricking devices, the fork 108 is automatically reciprocated vertically to engage and holdthe heel while it is being pricked and then to release the pricked heel so that it can be pushed out of the way by the next heel to be operated upon. .The yoke 112 is supported by arms 122 mounted upon a rock shaft 124 having suitable bearings in the rearward extensions 126. The rock shaft 124 is also providedwith a downwardly extending arm 128 provided at its lower end with a cam roll 130 engaging a slidably mounted cam 132. A spring 134 tends to rock the shaft 124 in such a direction as to keep the cam roll 130 always in contact with the cam 132. The cam 132 is connected by means of a rod 136 with the upwardly extending end 138 of the carriage 26, see Fig. 3. The connecting rod 136 passes loosely through the said upturned end and is provided with an adjustable collar 140. A spring 142 is interposed between the collar 140 and the end 138 of the carriage 26, to the end that movement of the rod and cam in the direction-for moving the fork108 downwardly may be yieldingly efiected. The adjustable collar 144 upon the connecting rod 136 causes the cam to be positively moved in the direction to permit the spring 134 to rotate the rock shaft 124 for the purpose of elevating the fork 108.

The portion 146 of the guideway 86 which is adjacent the templet 52 is given such an angular relation to the face of the said templet as to conform to the breast surface of a heel blank when the tread surface of the latter is placed against the face of the edges of allheel blanks, irrespective of size,

at the same distance from the rearmost awl 0f the gang, itis intended that in the usual operation of the machine the spring 118 shall not yield. A portion of the guideway 86 is preferably constructed as shown in Figs. 3 and 7, wherein a plate 148, having the same conformation as the remainder of the guide way is mounted upon a flat spring 150, the spring 150 being secured, as by screws 152, to a stationary portion 154 of the guideway. The construction just described permits bodily downward movement of the guideway section 148 and springs 156 aid in yieldingly supporting the section 148 in alinement with the remainder of the guideway. The spring 118 is so stifi with relation to the springs 150 and 156 that ordinarily the guideway section 148 yields downwardly as the blank 72 is pressed into engagement therewith by the fork 108, but, if, for any reason, excessive resistance be encountered by the fork in its downward movement, the spring 118 will yield and prevent breakage of the machine. 7

The operation of the machine will be apparent from the detailed description already given but may be briefly recapitulated as follows: A line of heel blanks having been placed in the guideway 86 as shown in Fig. 4, the carriage 26 is moved toward the awls. The upturned end portion 138 of the carriage through the connecting rod 136 carries the cam 132 to the left in Fig. 3 and through the mechanism previously described depresses the slide 106, the fork 108 operating to center and hold the heel blank, and the section 1 18- of the guideway being depressed until the rear or curved edgeof the blank is locatedat the proper distance from the rearmost awl. As the carrier 26 continues to advance the heel seat die 38 engages the heel seat and forces the heel upon the awls, the templet 52 yielding before the advancing heel blank. If the awls are inclined they slide laterally in the slots 82 in having an inclined face to position the tread face of a heel blank, a yielding breast support normally arranged with respect to the the cover plate 7 8. As the carriage 26 and consequently the follower and heel seat die carried thereby recede, the heel is kept under the pressure of the springs 66 between, the templet 52 and the heel seat die until it is. completely stripped from the awls. The projection 138 engaging the collar 1 1 1 positively moves the cam. 132 to: the right and permits the fork 108 to be raised and the pricked heel to be ejected by the next blank placed in position by the feeding mechanism.

Having thus described the invention, what is claimed as new and desired tobe secured by Letters Patent of the United States is 1.. In a heel pricking machine, the com bination of a yielding support adapted to receive the breast portion of a heel, a gang of awls,. means engaging the heel for positioning the rear thereof the same: distance K from the rearmost awl of the gang irrespective of the size of the heel, means to force the heel upon the awls, and means to apply pressure to the heel in the direction of its height while it is being stripped from the awls.

2. In a heel pricking machine, the combination of a yielding support adapted to receive the breast portion of a heel, a gang of awls, means engaging the heel for positioning the rear thereof the same distance from the rearmost awl of the gang irrespective of the size of the heel, means to force the heel upon the awls, and means to apply yielding pressure to the heel in the direction of its height while it is being stripped from the awls.

. 3. In a heel pricking machine, the combination of-a yielding support adapted to receive the breast port-ion of a heel, a gang of awls, means engaging the heel for positioning the rear thereof the same distance from the rearmost awl of the gang irrespective of the size of the heel, means to force the heel upon the awls, and means to apply yielding pressure to the heel while it is being stripped from the awls.

i. In a machine of the class described, the combination of a yielding support for a heel, mechanism for moving a heel sustained upon the support into a predetermined, definite position, and means for engaging the heel and exerting pressure upon it while in said position, saidmechanism being operated by said means.

5. In a heel pricking machine, the combination of a yielding breast plate adapted to sustain a heel, a movable rear fork arranged to engage the heel and move it into a predetermined position, pressing members, comprising a templet and a follower, arranged to press the heel between them, and means actuated by movement of one of said pressing members for moving the fork.

6. In a heel pricking machine, a templet templet at substantially the same angle as that between the breast and tread surfaces of the heel blank, a movable rear gage for locating the blank against the yielding breast support and positioning the rear of the blank at a definite place, and a follower angularly adjustable to conform to blanks having various angles between seat and tread. surfaces.

7. In a machine of the class described,

heel locating means comprising, in combination, a yielding breast engaging. member, a normally unyielding rear gage movable toward said member, into a definite posi' tion, and. means for permitting the rear gage to yield under abnormal stress.-

8. In a machine of the class described,

heel locating means comprising, in eombiname to this specification in the presence natiorll), a heel breast engfiaging member imof two subscribing Witnesses. mova le transversely 0 the heel, and a forked rear gage, the member and gage A ZE E EZ E being relatively movable longitudinally of mm um of 0 m Z the heel and the rear gage being adjustable Witnesses: transversely of the heel. GEORGE H. GLIDDEN,

In testimony whereof I have signed my CHESTER E. ROGERS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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