US1728396A - Apparatus for producing wooden heels - Google Patents

Description

Sept. 17, 1929. F. A. DAY ,396

' APPARATUS FOR PRODUCING WOODEN HEELS Original Filed May 1, 1926 4 Sheets-Sheet 1 S p 1'1, 192: F. A. DAY 1,1 8 396 APPARATUS FOR Pl iODUCING WOODEN HEELS Original Filed May 1, 1926 4 Sheets-Sheet 2 6/ ea I I Q l I o 6/ 68 7 50 I 6 MS a as 50 9 I I /a 3:2 9. 4:

gwventoo J, EAJJAY Sept. 17, 1929. F. A. DAY 1,728,396

I l APPARATUS FOR PRODUCING WOODEN HEELS Original Filed May 1, 1926 4 Sheets-Sheet 5 Sept. 17, 1929. F. A. DAY

APPARATUS FOR PRODUCING WOODEN HEELS Original Filed May 1, 1926 4 Sheets-Sheet 4 Patented Sept. 17, 1929 UNITED STATES FRED A. DAY, OF CINCINNATI,

APPARATUS FOR PRODUCING woonnn HEELS Application filed May '1, 1926, Serial No. 106,121. Renewed March 7, 1 92 9.

This invention relates to an improved shoe faces of the heelbody, and in order to elimheel and to the method and apparatus for producing the same, an outstanding object of the invention being the provision of an improved form of heel padding and wherein novel and improved methods andapparatus are utilized in the formation of the body by which a body of improved appearance is produced together with economy and facility in its manufacture.

In the manufacture of heels of the type employed especially on feminine foot wear, a wooden core or body is first produced which, in process of manufacture, is shaped or L modeled to produce any desired type or style of heel such, forexample, as the well known Cuban or French styles as well as many.

others, and this body, which is first carefully shaped to produce the desired. style, is then completed orfinished by operations involving painting, polishing or otherwise decorating the exterior surfaces thereof, or by having cloth or leather applied to the outer surface whereby the desired external appearance of the heel is obtained.

The present invention is directed to the production particularly of the so called Cuban or common sense type of heels, and more especially to the manner of producing, forming or finishing the arch or breast surface of this type of heel body. In order that the breast surface of said body will be given a compound curvature to enable the finished body at the forward side edges there of to impart, when viewed in side elevation, a straight edge appearance necessary in finishing the heel body to meet the exacting requirements of the particularv style selected Hitherto in the manufacture of heel bodies it has been a difiicult, laborious and expenwith the curved side walls. Ordinarily, the 1 breast surface is of concave formation in horizontal planes throughout the height thereof and since the side walls of the body are vertically concave the heel body, in previous p tures ofthe present invention.

vogues of manufacture, has a curved edge appearance between the breast and. side SLUT,

inat'e this ithas been necessary hitherto to grind or sandpaper the body so as to overcome the curved ed 'e appearance and pro 1 duce the desired'stralght line effect.

In accordance with the present invention a method and apparatus is pro'videdwherebythe heel body has the breast surface thereof modeled by means of a single'cutter so as topossess a compound curvature, concave in horizontal section and convex in vertical section, whereinv the desired appearance of the heel body issecured in one automatically executed operation rather than by means of i has been customary.

With these and other will appear asthe description proceeds, the invention consists in thenovel features of construction, combinations of elements and arran ements of parts hereinafter to be fully described and pointed out in the appended claims. if

In the accompanying drawings: Figure 1 is a plan view of the apparatus or machine employed in carrying out the present invention,

Figure 2 is a side. elevation thereof, Figure 3 is asimilar view at right angles to the plane disclosed in F igureP,

Figure & is a vertical sectional view disclosing on an enlarged scale the table of the machine and its supporting and driving mechanism,

Figure 5 isan enlarged plan View of the table and the cylindrical cutter,

Figure 6 is a vertical sectional View taken a plurality of hand effected operations as objects in view,as

through the work supporting mechanism" of the table on the plane indicated by the line 66 of Figure 5, L s,

I Figure 7 is a detail front elevation of the cylindrical cutter andshowing the latter engaging a heel blank arranged on the table,

Figure Sis a vertical longitudinal sectional view. taken through the cutter on the line W8 8 of Figure, 5,

. Figure 9 is a side elevation of a heel blank after being cutin accordance with the fea- Figure 1) ise bottom plan view thereof,

Figure 11 is a front elevation of the arch or breast surface of the heel blank,

Figure 12 is a perspective view of the completed blank or heel,

Figure 13 is a side elevation of the completed heel, illustrating more particularly the straight line finish imparted to the breast edges of the heel.

Referring more particularly to the accompanying drawings and to the specific embodiment of the invention therein illustrated, the numeral 1 designates a frame formed from a casting and constructed to provide a base 2 and upstanding walls 3. As shown in Figure 4, one of the walls is provided at its upper end with a vertically disposed guide 4, in which is received for vertical adjustment the lower member 5 of a compound table support 6. This lower member is provided with a horizontally arranged portion 7, in the upper surface of which is provided a dove-tailed groove 8, in which is situated a correspondingly shaped portion 9 provided upon the upper member 10 of the table support.

To effect the Vertical adjustment of the table support, the lower member 5 is provided on its under surface with a fixed collar 11', in which is journaled the upper end of a screw 12, the lower threaded end 13 of the latter being received within a correspondingly threaded portion 14 provided in the frame 1. The central portion of the screw table support.

is provided with a turning enlargement 15, by which, through the use of a suitable tool, the screw may be rotated so as toeffect vertical travel thereof and corresponding' vertical travel on the part of the table support. In the collar 11, the screw is provided with an annular grove 16,'and a transverse pin 17 is mounted in the collar 11 and engages with the groove 16 so as to lock the screw in connection with the lower member of the Fastening screws 18 are utilized for the purpose of retaining the collar in connection with the lower member 5. Thus, through the medium of the screw 12 and the extension-of the lower member entering the guide 4 of the frame 1, a strong and substantial construction is produced for admitting of vertical adjustment on the part of the table support and yet to enable the latter to receive without vibration the weight imposed thereon and to withstand without injury or loss of adjustment the stresses and strains to which the device is subjected.

As shown in Figures 2 and 3, a horizontal adjustment of the table supportis procured by the provision of the dove tailed extension 9, provided on the bottom of the upper member 10, which enters and is received by the similarly formed groove 8 provided in the upper surface of the lower member of said support.

To maintain and effect this horizontal adployed for rotating the table rate of revolution. Throughthe use of the justment, one end of the portion 9 of the upper member is provided with a depending extension 19, in which is journaled screw 20 actuated by a hand wheel 21. The screw 20 is threadedly received within a bore 22 provided in the lower member 5, and it will be seen that by rotating the screw 20 the upper member 10 may be caused to traverse the lower member of the support in a horizontal direction so that by means of these compound adjustments the desired operating positions on the part of the table support may be obtained and maintained.

The upper member 10 is provided with a vertically arranged bore for the reception of the lower end of a stationary vertically arranged shaft 23, which extends upwardly from the support and loosely receives a cir cular work supporting table 24. The under side of this table is provided with a fixed depending bearing sleeve 25 arranged to loosely receive the shaft'23, the lower end of said sleeve resting upon a thrust washer 26, arranged on the top of the upper member 10. Fixed to the sleeve 25, or to the under surface of the table 24, is an enlarged bevel gear 27, which meshes with a pinion 28 mounted upon a short shaft section 29, the latter being mounted for rotation within a bearing 30 formed in an extension 31 which in this instance constitutes an integral part of the upper member 10. The upper member is provided with a set screw 32 which impinges the shaft 23 so as to hold the latter in secured connection with the table support. The outer end of the section 29 is provided preferably with a sprocket 33, over which is trained a chain 34, said chain also passing over a second sprocket 35 mounted upon the driven shaft of a suitable form of speed reducing mechanism. mounted in a housing 36. This mechanism is actuated by an electricmotor 37, whose armature shaft is provided with a pulley over which is trained a belt 38, which leads to a similar pulley 39 provided upon the driving shaft of the speed reducing mechanism. The motor 37 and the speed reducing mechanism is carried upon a shelf 40, suitably formed with the frame 1- The chain 34 is also led over an idler 41, by which proper driving tension is 'main tained on the socket chain. Through the use of the speed reducing mechanism a high speed low horse power motor may be emat its required idler 41 the adjustment of the table support does notefl'ect the driving relation between the relatively adjustable sprockets 33 and The upper surface of the table 24 is provided, adjacent to the outer edge thereof,

prises an anchor section '42:, consisting of'a flat plate like member pivoted as at 43 on,

the upper surface of the table and provided with an upstanding wall.44which has its work engaging surface serrated or roughened as at 45. The lowerflat horizontal portion of each section 42is provided with an arcuate slot 46 in which is received an adjusting screw 47, the radius of the slot 46 being struck from thepi'votal point '43. Through the medium of this construction the working plane of the wall 44 may be adjusted to suit the requirements of the work to be received. Also engaging the work blank is a second radially adjustable stock member 48 carried by the upper surface of the table and provided with a longitudinally extending slot for the reception of a clamping screw 49, by means of which the stock member is retained in any of its adjustable positions. Cooperative with the anchor section 42 and with the stock member 48 for each set of work engaging supports on the table, is a gripping section 50. Each of these sections rests flatly on the upper surface of the table and includes a housing 51 having a horizontally extending base flange 52, which is slotted as at 53 for the reception of clamping screws 54, by means of which each of the "gripping sections may be moved toward oraway from the anchor sections. 'Thehousing of each gripping section is provided with an adjustable plunger 55 having its outer end pointed as at 56 for engaging the work blanks and to maintain the latteragainst the roughened surface of thecooper'ative anchor sec tion and also. against the upstanding wall of the stock member 48. This action on the part of the plunger is secured by a spring 57 arranged within a chamber 58 formed in the housingfil', the saidspring atone end engaging one of the walls of the chamber 58 and at the other end engaging a fixed pin 59 provided on the plunger 55, the tendency of the spring being to retract the plunger and to maintain the same out of engagement with the work blank.

However, in the operation of the machine, immediately before the cutting of the work or heel blank 60, the plunger is forced into engagement with the work to hold the latter stationary by the provision of a pivoted arm 61, carried by the housing 51. This arm is provided with a roller 62, situated to engage a cam surface 63 provided upon a stationary cam member 65 clamped as at 66 in connection with the shaft 23. As the table rotates, in the direction indicated by the arrow in Figure 5, the heel bodies or blanks 60 are fed into the machine so as to engage properly with the anchor sections 42 and the stock members 48, but as the blanks near the cylindrical cutter 67, to be hereinafter described, the rollers 62 engage with the under surface'of the cam member 65, .so

thatthe arms 61 are rocked about their pivotal mounting to force the plunger longitudinally, against the resistance offered by its spring 57, thus 'ena-blingthe pointed end 56 of the plunger tobite into the work so as to hold the latter stationary and secure during the cutting or sawing operation. The adjustment provided for the anchor sections 42, the stock members 48 and the gripping sections enables these latter ole-1 ments to be adapted to heel blanks of vary- I ing proportions, as will'be readily understood. Also, surrounding a portion of the circumferential edge of the table 24 is an upstanding arcuate guide wall 68, which retains the blanks in properly placed. positions on the surface of the table in connection with theanchor sections 42 before the blanks are positively gripped and held by the i lungers of the gripping section. By this I construction blanks may be fed rapidly into the machine so that the latter will have a relatively large working capacity;

The cutter 67 consists of a cylindrical steel body, as shown in Figures 7 and 8, having sawing or cutting teeth 69 provided upon the forward edge thereof and arranged for rotation in a vertical plane. The longitudinal axis of the cutter body is provided with a tapered bore to receive the tapered end 70 of a shaft 71, the forwardend of the latter being provided with lock nuts 72 saw longitudinally and control the working relationship of the teeth 69 thereon with respect to the edge of the rotatable table. The shaft 71 is provided with a'pulley wheel 77, around which is trained a-belt78,leading to a belt wheel 79 provided upon the armature shaft of an electric motor 80,

which is arranged on the base 2 of the frame. It will be understood that the operation' of the motors. 37 and 80 may be governed through themedium 'of'any suitable controlling. mechanism, such as the usual hand switches, indicated at 81.

In operation, wooden heel blanks or bodies.

are placed on the revolving table of the machme, as shown in Figure 5,-w1th the table rotating in the direction of the arrow. As

the blanks near the revolving cutter the holding clamps on the table act to positively grip the blanks so as to prevent movement thereof during engagement of the blanks with. the teeth of the cutter. This is accomplished, as has been previously explained, by the engagement of the arm 61 with the cam member 65. Due to the fact that the blanks are supported by the table and are revolving bodily about the axis of the shaft 23 during the cutting operation, the breast surface of the blank will be given a compound curvature, as shown particularly in Figures 9 and 10. Due to the construction of the cutter 67 the breast surface 82 of the blank is given a concave curvature, as indicated at 83 but, also, due to the bodily rotation of the table, the blank will, in addition, have a conveXed curvature imparted thereto, as at 84. It is to the obtainment of this particular curvature that the present invention has been addressed. It will be seen that by this method of operation and the construction described a shoe heel is formed having a breast surface of concave for- 1 mation in horizontal section and of convexed formation in vertical section. After leaving the cutter the heel blank operated on is automatically released, since the arm 61 does not then engage with the cam member and, as shown in Figure 1, the cam member is provided with a resilient wiping arm 85, disposed in the path of travel of the blank, whereby when the blank is released the spring arm eng'agcs therewith and presses the same olf of the table into the discharge chute 86.

By this arrangement the vertical edges of the blank terminate in substantially coifin shaped portions 87, in order that during the subsequent modeling of the sides of the heel body, to produce the curvature indicated at 88, in Figure 12, these crescent shaped portions will be removed so that the heel body will conform to the arcuate line 89 disclosed in Figure 11. This results, as shown in Figure 13, in the production of a heel body which, when viewed in side elevation, presents the desired straight edge or straight line appearance, avoiding the presence of the curved edge forms hitherto unavoidably present when the breast surface of the heel body has been merely finished to present a concave formation without the convex condition being present. It will be understood that the curvature of the side wall 90 of the heel may be produced by any well known machinery and method for carrying out this purpose. This is usually done on a second or separate machine. Likewise, the upper surface of the heel body is suitably pocketed as at 91 in the customary manner.

Thus, it will be seen that by the provision of the apparatus herein specifically described the breast surface of a wooden shoe heel may be quickly, conveniently and economically formed to provide for the double curvature thereof to the end of producing Cuban 7 type heel body having vertical edges at the line of juncture of the breast surface of the body with the curved side walls thereof. lhis is accomplished by the automatic operation of the machine. described, wherein it is merely necessary to feed the blank into the machine in order to carry out the cutting or modeling thereof. This eliminates the manual handling of the blanks and the sand papering or finishing thereof, as has been hitherto necessary, in order to produce the straight edge effect. Ihe cutting teeth of the cylindrical cutters 67 are set close together in order that a smooth finished surface will be provided, eliminating the necessity of further dressing or smoothing of the surface. After the heel body has been completed as shown in Fig ures 12 and 13, any suitable materials may be applied to the outer surfaces thereof to )resent the desired finished appearance.

\Vhat is claimed is: In a machine of the class described, a revoluble table, an axial support therefor, work holding means on the upper surface of said table, comprising an anchor section, a gripping section spaced from said anchor section, said grip nng section including a sliding plunger between the outer end of which and said anchor section the body to be clamped is placed, spring means acting on said plunger and normally spacing the latter from said body, a pivoted arm carried in connection with said table and normally in engagement with one end of said plunger, a stationary member carried by the a ial support of said table and arranged above and in the path of movement of said arm to swing the latter about its pivotal mounting whereby said plunger is forced into engagement with said body, and a horizontally disposed cutter arranged to engage with said body while the latter is clamped between the anchor and gripping section of said table. In testimony whereof I aflix my signature.

FRED A. DAY.

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