US1951468A - Wood heel spooling machine - Google Patents

Description

4 Sheets-Sheet 1 Fig.1.

L. J. BAZZONI WOOD HEEL SPOOLING MACHINE Filed Oct. 1, 1932 //V \/E N 7 17/5 I i l I r March 20, 1934.

March 20, 1934. L. J BAZZONI WOOD HEEL SPOOLING MACHINE Filed Oct. 1, 1932 4 Sheets-Sheet 2 March 20, 1934. L. J, BAZZONI 1,951,468

WOOD HEEL SPOOLING MACHINE Filed Oct. 1, 1932 4 Sheets-Sheet 3 March 20, 1934. L J BAZZON. 1,951,468

WOOD HEEL SPOOLING MACHINE Filed Oct. 1, 1932 4 Sheets-Sheet 4 Patented Mar. 20, 1934 UNITED STATES PATENT OFFICE WOOD HEEL SPOOLING MACHINE Application October 1,

10 Claims.

This invention relates to machines for spooling Wood heels and is disclosed as embodied in a machine of the type shown in United States Letters Patent No. 1,670,304, granted May 22,

1928, on the application of J. W. Green.

Wood heels, as they come from the turning machine, have their top-lift ends generally horseshoe-shaped. It is necessary, for some styles, to reduce or trim off the breast corners to make the top-lift ends more nearly circular, or kidney-shaped. This operation is called spooling and is performed in such a machine as shown in the patent referred to. This machine has two cutters rotating on arms swinging in a horizontal plane under pressure exerted by the heel itself upon guide rolls associated with the cutters and the heel is fed vertically of itself between the cutters, which trim the breast corners.

It is a principal object of the present invention to improve machines of this type to make them more accurate and faster in their operation. To this end I have provided such a machine with a transfer mechanism which receives a heel and loads it into the heel carrier, and with a clamping and locating mechanism which operates in timed relation to the transfer mechanism in accepting the heel.

Accordingly, the illustrated machine which is a preferred embodiment of the invention comprises a pair of spooling cutters, a heel carrier, and a transfer mechanism for loading the carrier. As illustrated, the transfer member comprises a resilient finger with a notch in it to engage the heel and hold it as it is being carried to the heel carrier. Also, in accordance with a feature of the invention, the illustrated machine is provided with a clamp which engages the heel, when it has reached the carrier, and locates and holds it as the transfer member withdraws. This clamp is preferably forked, and engages the back of the heel and crowds it against the carrier table and a breast gage, locating it accurately at the same time by seating the fork upon it.

Another feature of the invention provides for increased accuracy of work under some conditions. In the illustrated machine the cutters and guide rolls have the same movement toward and from the work, so that the relation between them and the work remains unchanged as the cutters travel over the work. In the illustrated machine, this is accomplished by swinging the cutters around axes that are parallel to the axes of rotation of the cutters themselves.

These and other features of the invention 55 comprising certain combinations and arrange- 1932, Serial No. 635,817

ments of parts will be apparent from the following description of a preferred embodiment of the invention shown in the drawings, in which Fig. 1 is a front elevation;

Fig. 2 is an enlarged perspective view from the front;

Fig. 3 is a perspective view from the back;

Fig. 4 is a side elevation;

Fig. 5 is a section on the line VV of Fig. 4;

Fig. 6 is a detail view of the cutters in action on a heel;

Fig. 7 is a perspective view of a heel before spooling; and

Fig. 8 is a perspective view of a heel after spooling.

The motor 10 is supported on a lower frame bar 12 of the main frame 14, and drives a pulley 16 having a hub pinion 18, geared to a larger p nion disk 20 rotarily mounted on the frame 14 which has three cams 22, 24 and 26 on it. The cam 22 is a path in the rear face of the disk, the cam 24 is a path on the front, and the cam 26 is a face cam which is merely a hump on the front side of the disk at its periphery. These cams operate the loading, feeding and jacking mechanisms, respectively, as will be seen.

The loading and transferring mechanism will be first described. This mechanism receives a heel blank from the operator's hand, transfers it to a moving feed table which feeds it between the cutters, and removes it therefrom. The cam path 22 actuates a roll on the end of the front arm 28 of a bell-crank lever 283032 pivoted at 30 in a web 34 in the main frame 14. The rear arm 32 is connected by a link 35 to a rocking lever 36 pivoted at 38 on the machine frame. The lever 36 has a circular, grooved periphery around which a wire cable 40 passes and runs over idler pulleys 42 mounted on the web 34, and around two idler pulleys 44 mounted on the front of a table 46 pivotally adjustable at 48 on the web 34 by means of an adjusting screw 50.

The cable 40 is clamped to a lug 52 on the receiving and transferring member 54. This member slides freely on a guide bar 56 mounted on the table 46, and is caused to oscillate to the left and right once during each operative cycle of the machine by the rocking lever 36. The member 54 has a rod 58 extending from it toward the front of the machine, and on this rod is adjustably mounted a rod 60 having an adjustable stop 62 and a slightly backwardly curved end 64. This member 60, 62 acts as a breast gage for the heel blank while in the transferring mechanism, as will be seen. The rod 58 also carries an adjustable head 66' in which is pivotally mounted at 68 a retaining finger 70, which is spring held in an extreme counterclockwise-rotated position by a spring 72, and is stopped against further counterclockwise rotation from that position by a stop 74. The finger 70 has a notched end 76. A little table 78 lies beneath the path of oscillation of the fingers 60, '70, and is mounted on the rod 56. The rod 56 also supports a guide bar 80 against which run a roll 82 and a bearing surface 84 on the member 54 to prevent rotation of the member 54 about the guide rod 56. As the member 54 and its fingers 60, '70 move to the left, the operator puts the heel blank 86 on the table 78 and slides it backward and to the left into the notch '76 and between the fingers 60, '70, where it is held and carried to the right on the rightward movement of the member 54 where it is delivered to the feeding mechanism. The stop 62 assists the operator in locating the heel where the notch 76 can snap it into proper position.

The feeding mechanism receives the heel blank from the transferring mechanism and carries it upward to the cutters and downward therefrom. It is mounted on a slide 88 running up and down on a dovetail guide 90 mounted on the machine frame 14. This slide is actuated by a cam lever 92 pivoted at 94 on the frame 14 and having a roll 96 running in the cam track 24. The righthand end of the lever 92 is connected by a spring 98 to the bottom of a vertical rod 100 which has a slot-and-pin connection at 102, 104 with the end of'the lever 92. The rod 100 is adjustably connected to the slide 88 at 106. The slide 88 is thus driven up and down once in each operative machine cycle, the spring 98 yielding in case the slide is jammed by an improperly positioned heel blank.

The slide 88 carries a forwardly projecting bracket (Fig. 4) with an arcuate guideway 112 in which is pivotally adjustable a work table 114. The work table 114 carries a breast gage 118 which is adjustable in a slideway 119 in the table running forwardly and backwardly of a heel blank on the work table. The bracket 110 has pivoted on it at 120 a C-shaped clamp 122 with a forked end 124. Beyond the pivot 120 the clamp carries a toothed segment 126 meshing with a toothed segment 128 on a bell-crank lever 130, pivoted at 131 on the slide 88, having an arm 132 extending downward and cooperating with a roll 184 on the end of a lever 136 pivoted at 138 on the frame 14. This lever 136 carries a roll 140 which cooperates with the cam 26. Thus the cam 26 throws the arm 132 and rocks the C-clamp 122 toward the operator to retract its fork 124 and permit the transferring mechanism to move a heel blank on the table 114. When the cam 26 releases the arm 132, a spring 142 forces the C-clarnp clockwise in Fig. 4 so that it quickly embraces the sides of the heel blank on the work table 114 and presses it up against the fiat breast gage 118, and thus locates it accurately and holds it firmly while it is being raised between the cutters and spooled. A supplementary breast stop 119a may be used to prevent the heel blank from tipping as the clamp 122 drops on it.

The cutters 144 are mounted on two horizontal front and rear extending shafts 146 mounted in two swinging arms 148 pivoted at 150 for pivotal movement around axes parallel to the cutter shafts. Their upper ends are urged toward each other by a spring 152 (Fig. 5), and this movement toward each other is limited by a cam plate 154 adjustably mounted on a rod 156 which is carried by a plate 158 which is adjustably mounted at 160 on the slide 88. A right and left screw 153 carries lugs 153a which contact with the extreme lower ends of the arms to limit the said movement when the cam is raised and inoperative. Cams 154a are also carried by the rod 156 below the cams 154, and engage the bearings of the cutter shafts to hold the cutters from contact with the carrying mechanism if it be raised without a heel in it. The cams 154, 154a have nothing to do with the spooling, per se, but the former release the arms 148 gradually to prevent the cutters striking the end of the heel violently. The adjustment at 153 does not prevent fouling the cutters since the arms 148 can both be swung in the same direction, together, even though the screw 153 be operating. The arms 148 contact with the cam 154 by means of rolls 162 which are mounted on lugs 164 adjustable, at 166, forwardly and backwardly on the arms 148. These lugs carry at their front ends castings 168 which are rightwardly and leftwardly adjustable on them by means of slides 170. These castings carry little shafts 1'72 extending toward the rear of the machine, and in line or nearly so with the cutter shafts. The shafts 1'72 carry guide rolls 174 which are freely rotatable. These rolls engage the sides of the heel blank as it passes through the cutters and serve to guide the swinging movement of the swinging arms 148 while the heel blank is being spooled. The adjustments at 166, 170 permit accurate horizontal adjustment of the rolls 1'74 relatively to the cutters. The shafts 172 are mounted in eccentrics controlled by capstan nuts 172a which permit vertical adjustment also.

The cutters 144 are driven by belts 1'76 running between their shafts 146 and pulleys centered at 150, the pivotal axes of the arms 148. These pulleys are on shafts 1'78 which are driven by belts 180.

The cam mechanism is so timed that as a heel blank in the transferring mechanism moves to the right, the C-clamp opens and falls when the heel blank has been moved on the work table, displacing the previously treated, and now freed, blank. The transferring device is then withdrawn to the left, reaching its leftmost position before the work table, which has begun to rise as soon as the transferring fingers are out of its way, reaches its uppermost position. The transferring mechanism remains at its leftmost position while the heel blank is spooled by the cutters and until the work table has descended nearly to the level of the table '78, and during this time the'operator has put a second heel blank in it. It now starts to move to the right and the c-clamp begins to open as the tables '78 and 114 come to the same level. The second heel blank pushes the first one off from the table 114 as it takes its own place on the table 114, and the C-clamp falls on the second heel blank just before the transferring device starts to move to the left. The table 114 starts to rise while it is so moving.

Figs. 6 and 7 show the heel blank before and after spooling, respectively. The spooled portion is shown at 182.

The arrangement of the arms 148 is of importance in the production of accurate work. These arms swing about axes which are generally parallel to a fore and aft extending line in the heel, so that as they swing apart or together under the reaction between the guide rolls 1'74 and the work, they move substantially straight toward and from the work, and the relation between the guide rolls, cutters and work remains unchanged. In other words, the swinging movement of the arms is in a plane extending laterally and vertically of the heel.

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

1. In a machine for spooling heels, a heel holder, two rotary cutters shaped to trim the breast corners of a heel, two swinging arms on which said cutters are mounted, the axes of swing of said arms being parallel to the cutter axes respectively, and mechanism for feeding a heel on the holder between the cutters.

2. In a machine for spooling wood heels, a heel holder, two cutters rotating on parallel shafts and having their effective peripheries shaped to trim the corners of the lower end of a wood heel, swinging arms carrying said shafts and mounted to swing toward and from each other and a heel between them in a plane extending vertically and transversely of the heel, a guide associated with each cutter, and mechanism for feeding a heel in the holder between said cutters, the line of feed lying in said plane.

3. In a machine for spooling wood heels, a heel holder, two rotary shafts carrying cutters shaped to trim the breast corners at the lower end of a heel in the holder, swingable arms carrying said rotary shafts and permitting the cutters to move toward and from each other and a heel in the holder as the said heel passes between them, in such manner that the angle between the shafts is unchanged by the swinging of the arms, a guide roll associated with each cutter, and mechanism for feeding a heel in the holder between the cutters.

4. In a machine for spooling wood heels, a heel holder, two rotary cutters arranged to trim the breast corners of a heel in the holder, a guide associated with each cutter to rest on the side of the heel and determine the depth of cut of the cutters, mechanism permitting movements of approach and separation between the cutters and the heel to enable the cutters to follow the contour of the heel, such movements of a guide and its associated cutter toward and from the heel relatively to the heel being identical in extent, and means for feeding the heel between the cutters.

5. In a machine for spooling wood heels, a heel holder, a pair of cutters arranged to trim the breast edges of a heel in the holder, mechanism for moving the holder to feed a heel therein between the cutters, and a transferring device arranged to receive a heel and move it into the heel holder.

6. In a machine for spooling wood heels, a heel carrier movable to feed the heel, a pair of cutters arranged to trim the breast edges of a heel in the carrier, a transferring device arranged to move transversely to the direction of movement of the carrier and to place a heel in the carrier, a clamp member for holding the heel on the carrier, and means for feeding the heel between the cutters.

7. In a machine for spooling wood heels, a heel carrier, a pair of cutters arranged to trim the breast edges of a heel in the carrier, a transferring device comprising a resilient finger adapted to receive a heel and to transfer it to the carrier, a clamp operating in timed relation to the transferring device to clamp the heel on the carrier, and means for feeding the carrier and its heel between the cutters.

8. A heel holder comprising a table arranged to support the attaching face of a heel, a tool, means for feeding the table and a heel thereon to the tool, a breast gage for the heel, and a poweroperated member arranged to contact with the rear lateral portions of the heel and arranged to move toward the table in timed relation to the movement of the table, to locate the heel proper- 1y on the table and against the breast gage.

9. A heel holder comprising a table arranged to support the attaching face of a heel, a tool, means for feeding the table and a heel thereon to the tool, a breast gage for the heel, a transferring member arranged to move a heel on to the table, and a forked clamp arranged to move in timed relation to the transferring member to engage the rear face of the transferred heel and force it against the table and breast gage.

10. A transferring member comprising a resilient finger having a notch arranged to engage the rear surface of a heel and to move it on to the table, a notched clamp member arranged to snap against the rear surface of the heel and to locate and hold it against the table and breast gage as the transfer finger is withdrawn, and feeding mechanism for feeding the table and its heel to the tool, said feeding mechanism having a dwell during the operation of the transfer member and the clamp.

LEWIS J. BAZZONI.

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