US1846029A - Shoe heel machine - Google Patents

Description

Feb. 23, 1932. A. F. FROUSSARD SHOE HEEL MACHINE Filed Feb. 20, 1931 4 Sheets-Sheet Fig.2.

Inventor oussard Feb. 23, 1932.

A. F. FROUSSARD SHOE HEEL MACHINE Filed Feb. 20, 1931 4 Sheets-Sheet 2 Inventor A. F. ussard Att'y.

Feb. 23, 1932. A. F. FROUSSARD 1,346,029

"SHOE HEEL MACHINE Filed Feb. 20, 1951 4 Sheets-Shoe} 4 Fig. 14.

Inventor gglroussard y /fl% Att'y.

Patented F eb. 23, 1932 UNITED STATES .AIBER'I. I. FROUSSARD, OF ST. LOUIS, MISSOURI SHOE HEEL MACHINE Application filed February 20, 1931. Serial No. 517,218.

My invention relates to a shoe heel machine and particularly to a machine adapted to trim and press that portion of a shoe sole which projects under the heel, as well as providing means for gluing the heel in position so that the entire work of preparing the shoe and attaching the heel may be performed by a single workman in a continuous series of operations.

In the accompanying drawings, which illustrate one form of machine made in accordance with my invention, Figure 1 is front elevation, the lower part of the supporting stand being broken away; Figure 2 is a top, and Figure 3 arear view of one of the removable trimming members; Figure 4 is a perspective View of the other trimming member; Figure 5 is a side elevation, one of the driving wheels and some of the cooperating parts being removed; Figure 6 is a slightly enlarged elevation taken from the opposite side from Figure 5, the other driving wheel and cooperating parts being removed; Figure 7 is a detail view of the timing mechanism; Figure 8 is an enlarged section taken on the line 8-8 of Figure 1; Figure 9 is a section taken on the line 9-9 of Figure 8; Figure 10 is a section taken on the line 10--10 of Figure 1; Figure 11 is a section taken on the line section taken on the line 12-12 of Figure 5; Figure 13 is a view showing a shoe in-position on the trimmer slide; Figure 14 is a bottom View of a shoe; Figure 15 is a front view of the heel clamping frame; and Figure 16 is a side view of the clamping frame.

As shown in the drawings, the framing of the machine is supported on a stand 1 and comprises a base plate 2 and a pair of side frames 3 and 4, the upper ends of which are connected by a shaft 5 pivotally mounted on which are the upper ends of a pair of toggles 8 and 7, the lower ends of which are pivoted to plungers 8 and 9. respectively, reciprocating in a guide 10. Toggle 6 is operated by the strap 11 of an eccentric 12 mounted on a shaft 13. Loosely mounted on the shaft 13 is a pulley 14 adapted to drivethe shaft through a clutch 43, which may he like that shown and described in Patent No. 1,721,902

11-11 of Figure 10; Figure 12 is a reduced granted to me July 23, 1929, and is controlled by a retractor 53 carried in a bracket 54 and acting on a dog or detent 44 only one of which is necessary as no dwell is required when the plunger 8 is at the lower end of its stroke. Toggle 7 is operated by the strap 15 of an eccentric 16 on a shaft 17 in alignment with the shaft 13 and driven from a pulley 18 by means of a clutch 43, like that of my patent above referred to, and provided with two detents 44 as therein described, as it is necessary to stop the plunger 9 both at the top of its stroke to insert the work, and at the lower end thereof to perform a pressing operation, the latter named stop or dwell being automatically prolonged through a number of revolutions of the pulle 18 by timing mechanism to be hereina ter described. The shafts 13 and 17 are journaled in hearin s in the side frames 3 and 4, respectively, and are additionally supported at their inner ends by a bearing 19 common to both shafts and carried on a pillar 20 secured to the base plate 2. The timing mechanism shown in detail in Figure 7 is carried by a plate 21 forming an extension of the retractor bracket 54 on the side frame 4. Carried by this plate is a stud 22 on which is mounted a ratchet wheel 23 and rigidly attached cam 24. Engaging with the ratchet wheel is a fixed pawl 25 and a movable pawl 26 carried by an arm 27 mounted to oscillate on the stud 22. A spring plunger 28 normally holds the arm 27 against a stop pin 29 which may be set in any one of several holes 30 to vary the are 35 through which the arm oscillates and corn sequently the amount of movement imparted to the ratchet wheel by each oscillation. The arm is actuated by a pin 31 which is positioned on the inner face of the pulley 18 so as to contact with the end of the arm. Pivoted on the plate 21 at 32 is a lever 33 adapted to contact with the cam 24. The free end of this lever rests upon an adjustable screw 34 in one end of a lever 35 pivoted to the plate 21 at 36. Connected to the other end of the lever by a pin and slot connection 37 is a lever 38 pivoted at 39. The free end of the lever bears on stop 40 on the adjacent retractor bar 53. By adjustment of the position. Upon further movement of the ratchet wheel the retractor will again move into the path of the dog and hold the clutch out of operation until the ratchet wheel.

makes a complete revolution, thus holding the plunger in its lowest or pressing position during a definite number of rotations of the pulley. The duration of the pressing dwell may be varied by the position of the pin 29 in the holes 30 so that the ratchet wheel is moved a varying number of teeth at each oscillation of the arm 27.

""Ca'ri'ied on the lower end of the Plunger 8 central portion of the edge of the front blade 48, extending between the blades 49, is removed (as shown in Figure 4) so that the three blades form in effect a pair of L-shaped trimming knives which cooperate with the front and inner edges of a pair of shearing blades 50. These blades are carried by lower cutter block 55, which is U-shaped so as to allow its insertion from the rear and is held in place by a retaining plate 56. This cutting block has vertical movement in ways 57 in the cutter head and is normally held in the position shown in Figure by coil springs 58 placed in the holes 60 (Figure 2) in the upper face of the block. For convenience in manufacture the outer sides of the ways 57 are formed of separate cheek pieces 61 provided with lips 62 forming stops to limit the downward movement of the cutter block 55. The cutter block 46 is inserted from the front of the cutter body, the projecting ends of the blade 48 forming limiting stops, and is held in position by a turn button 63. While the blades 48 and 49 may be made integral with the block 46 and the blades 50 integral with the block 55, I prefer to form them of separate pieces, both for convenience in manufacture and to permit of easy sharpening.

The lower end of the plunger 9 carries a presser head 64 which may be formed integral with the plunger and is provided with an opening 65 (Figure 6) for the reception of an electric heating element (not shown). Formed in the lower face of the head is a guide way for the reception of a pressing plate 66 which may be of any suitable form but, for the exact form of work shown in the drawings, has a flat lower face in which is formed a shallow rounded recess 67 (Figure 1) for the reception of the trimmed end of the sole. The presser plate is held in position in the presser head by a turn button 68.

Below both the cutter head and the presser head are shoe supports. Each of these supports comprises a guide block 69 and a slide 70 movable therein and provided with a pin 71 adapted to enter the socket of a shoe last 72 (Figure 13). Guide blocks 69 are each carried 011 a vertically movable rod 73 passing down through the base plate 2 and a cross bar 74 suspended by bolts 75 from said base plate. Surrounding the lower part of each of the rods 73 is a sleeve 76 on the upper end of which is a square head 77 having an inclined lower face. The inclined face cooperates with a wedge 78 having a central slot through which the sleeve 76 passes and which allows of in and out movement of the wedge to raise or lower the sleeves upon the heads 77 on which bear the lower ends of coil springs 79, the upper ends of which bear against shoulders on the rods 73. The wedges 78 are moved in or out by threaded shafts 79 engaging with threaded lugs 80 carried on the wedges. Shafts 79' are journaled in brackets 81 on the cross bar 74 andprovided with handles 82 by means of which they are rotated. By movin the wedges in or out the distance which t e guide blocks 69 project above the table and the consequent compression of the springs when the shoes are trimmed or pressed, may be regulated. Surrounding the lower ends of the sleeve 76 are short springs 83 positioned between the cross bar 74 and nuts 84 on the rods 73. These latter springs are not essential to the ,operation of the machine but act as cushions to prevent jar when the work is released by the rise of the plungers.

Carried on the left hand side of the stand is a shoe support 85 having a pin 86 for engagement with the socket of a last, and on the right hand side is a similar support 87 with pin 88. The support 85 is used to hold the shoe while the sole is marked for trimming and the support 87 is used in connection with clamping devices such as shown in Figures 15 and 16 to secure the heel in position. A number of these clamping devices are used in connection with the machine as one must be left on each shoe for some time after the application of the heel to allow the glue to dry. The base of each clamping device is a piece of sheet metal 89 having a central opening for the passage of pin 88. Secured to the plate by pivotal connections 90 are a pair of arms 91. These arms have adjustably secured to their threaded outer ends, by means of nuts 92, a cross bar 93 carrying a cam 94 provided with an operating lever 95 by means of which the device may be used to clamp a heel 96 in position on a shoe 97 over the end 98 of the sole.

In the operation of the machine a shoe 97 applied to a last 72 is sup orted on the, arm 85 and the heel positions on the shoe over the end 98 of the sole. The sole is now marked along the inner edges of the heel and the heel removed. The shoe and last are now transferred to the left hand pin h 71, as shown in Figure 13. The slide 70, carrying with it the last and shoe, is now moved under the trimming head, the unattached end 98 of the sole being guided between the upper and lower cutting blocks until the mark on the sole coincides with the blade 48. The left hand clutch 43 is now thrown into operation to cause plunger 8 to descend. The movement of the lower cutting block will be arrested by contact with the shoe before the end of the stroke of the plunger so that the upper and lower cutting blocks will be forced together, trimming the sole along the dotted lines 99 (Figure 14). After trimming, the last and shoe are trans ferred to the right hand'pin 71 and moved under the pressing plunger 9, the heated pressing plate 66 of which is lowered against the shoe and held against it a predetermined time by the timing mechanism heretofore described. After pressing, the last and shoe are transferred to the arm 87, a clamping device being first placed over the pin 38 so that the last will rest on base plate 89. Glue is now applied to the heel and the heel positioned over the trimmed and pressed sole and clamped in position by the operation of the cam. The clamping devices, together with the shoe and last, may now be removed and laid away until the glue has set.

It will be seen that by the use of my ma chine the entire process of positioning the heel, including the necessary trimming and pressing of the sole, may be carried out by a single operator in a continuous manner, not only saving time but insuring accurate results.

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

1. In a device of the class described, the combination with a plunger, of a trimming die carried thereby, said die comprising a head having a central way therein, a block sliding in said way and provided with a cross knife and a pair of longitudinal knives, the cutting edge of said cross knife being removed between said longitudinal knives, and a vertically yielding block having a pair of shearing blades cooperating with said knives.

2. In a device of the class described, the combination with a plunger, of a trimming die carried thereby, said die comprising a head having a central cutting member inserted from the front thereof and provided with cutting knives, and a U-shaped block inserted from the rear thereof and carrying shearing blades cooperating with said knives,

said U-sha (1 block being yieldingly mounted in the ie.

3. In a device of the class described, the

combination with a plunger, of a trimming die carried thereby, said die comprisin a sad having a central way therein, a cutting member provided with a cross knife and a pair of longitudinal knives, the edge of said cross knife being removed betweensaid longitudinal knives, a U-shaped frame yieldingly mounted in said head, and a pair of shearing blades carried by said frame and cooperating with said knives. In a device of the class described, the combination with a plunger, of operating mechanism therefor, a work carrier cooperating with said plunger, a rod on said work carrier, a sleeve surrounding said rod, a spring interposed between said sleeve and work support, and a sliding wedge for raising and lowering said sleeve.

5. In a device of the class described, the combination with a plunger, of operating mechanism therefor, a work carrier cooperating with said plunger, a rod on said work carrier, a sleeve surrounding said rod, a spring interposed between said sleeve and work support, a wedge for raising and lowering said sleeve, and a threaded rod for actuating said wedge.

6. In a device of the class described, the combination with a base plate, of a plunger supported therefrom, means for operating said plunger, a rod on said work support, a cross bar below said base plate, a sleeve surrounding said rod and vertically movable in said table, a spring interposed between said table and work support, a laterally movable wedge for adjusting said sleeve vertically, and a threaded rod for moving said wedge.

In testimony whereof, I hereunto aflix my signature, this 17th day of February, 1931.

ALBERT F. FROUSSARD.

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