US1715660A

US1715660A - knigkt

Info

Publication number: US1715660A
Authority: US
Publication date: 1929-06-04
Anticipated expiration: 1946-06-04

Description

June 4, 1929. R, F, -j-r 1,715,660

HEEL CUTTING MACHINE I Filed Aug. 8, 1928 Patented June 4, 1929.

"UNITED STATES matte PATENT OFFICE}.

RALPH F. KNIGHT, OF BEVERLY, MASSACHUSETTS, ASSIGNOR T UNITED SHOE MA CHINEBY CORPORATION, OF IATERSON, NEW JERSEY, A'CORPORAT ION OFNEW JnnsnY.

HEEL-CUTTING MACHINE.

Application filed August '8, 1928. Serial No. 298,269.

This invention relates to heel making machines and is illustrated. as embodied in a wood heel turningmachine of the type disclosed in United States Letters Patent No. 1,488,534, granted April 1, 192a, on the application of Folsom, Vinton and Whitney.

Machines of this type are provided with two rotary cutters and a jack for holding a heelblank, the blank being swung past one cutter by thejack to make a cut around one side of the heel blank from breast to back and then past the Other cutter to cut around the other side of the blank.

by its, toplift receiving and attaching sur faces and to gage it only by a gage atits breast surface, since the lateral and rear surfaces of the blank were about to be trimmed by the cutter. Such a gage affords no certainty of lateral positioning of theblank, this being entirely a matter of the operators judgment. Under some conditions this circumstance has resulted in inferior work inasmuch as thelateral surface thus formed on the blank sometimes lacked proper relationship to other surfaces formed thereon. This was especially true in the case of Cuban heels, in which the previously formed breast groove is vertical, and a slight lateral displacement of the blank in the heel turning machine would. put the side and breast surfaces hopelessly out of proper relationship.

This problem has been satisfactorily dealt with in the invention of A. F. Cook, described and claimed in his application, Serial No. 274,583, filed May 2, 1928, which provided a gage arranged to contact with a lateral face of a heel blank in a wood heel turning machine, and removable from operative position to a position beneath the heel blank to permit the cutter to trim the gaged face of the blank. The construction provided by the invention of Cook was further improved by the invention of W.N. Sawyer, described and claimed in his application, Serial No. 275,508, filed May 5, 1928, which provided a single opcrating handle for clamping the heel blank in the jack and for moving the gage from operative to inoperative position.

It is an object of the present invention to provide a still further improved construction of the type provided by Cook and Sawyer. To this end I have provided a combined jacking and gaging instrumentality which It has been customary to clamp the heel blank in the jack faceof a heel blank, and the gage, in addition,

is arranged to move downwardly to an inoperative position below the heelblank where any liability of its coming in contact with the cutter is avoided. 7

These and other features of the invention comprising certain combinations and arrangements of parts will be apparent from the following description of a preferred embodi ment of the invention shown in the drawings, in which j j Fig. 1 is a side View of those parts of a wood heel turning machine as are essential to an understanding of the present inven: tion, showing the side gage in inoperative position;

Fig. 2 is a similar view showing the gage in operative position;

Figs; 3 and 4.- are front views of the parts shown in Figs. 1 and 2 respectivel and Fig. 5 is a perspective View of the parts shown inFig. 2.

The jack of the illustrated wood heel turning machine is supported on a jack holding shaft 12 pivoted to the machine by means of a bracket or crane 13 pivotally mounted on the main frame of the machine, and not fully shown herein but fully described in the Letters Patent referred to. The jack is pivoted to a plate 14 at the top of the shaft 12 by a horizontal pin 16 to permit vertical tilting of the jack. The jack carries a base plate 18, on which a woodheel blank 20 is placed against a breast gage 22, adjustable by a slot and bolt connection at 24;. An upper clamping member 26 is pivoted to swing ver-.

tically above the blank 20 and is forced againstit by pressure from a screw 28 swiv- V eled in one end of

acompound lever

29, 30 pivoted on the jack frame at 32. roll 34 at the other end of the

lever

29, 30 is engaged by a cam 36 at one end of a lever 38 pivoted on the jack frame are, torotate the lever 29, 8O and'se't the clamping member'26 through the screw 28, thereby holding the blank against-the base plate 18. This clamping structure will be found more fully illustrated and described in an application, Serial No.

213,600, filed Aug. 17, 1927, by N. W. Kinney.

In operation, the jack 10 is swung toward a cutter 42 mounted in the main frame of the machine, as shown in the Letters Patent referred to, and then is rotated about the axis of the shaft 12 by means of the lever 38 to cause the cutter to trim the blank 20 from the breast 44 along one side to the back 46, the other side of the blank being then treated in the same manner, As above explained it is highly desirable that the blank should be gaged from the side as well as from the breast, and to this end I have provided an improved side gage 48 of the type which is removable from the path of the correspond ing cutter after its gaging function is performed.

This gage 48 is mounted fixedly on a stub shaft 50 rotatable in the jack frame. The stub shaft is not quite horizontal, extending a little upwardly and outwardly from the jack frame. An adjustable contact member 52 is mounted in the gaging end ofthe member 48. A link 54 is pivoted to the gage at a point below the axis of the shaft 50, and to a boss 56 on the operating lever 38.

When the lever 38 is swung up, as shown in Fig. 2, to loosen the lever 28 and release the blank 20, the boss 56 swings to the right and throws the gage 48 counterclockwise until its left end 58 comes down upon a stop 60. Its gaging end will then be opposite the side of the newly inserted heel blank 20 which can be laterally gaged by the contact member 52. When the lever 38 is thrown down, as shown in Fig. 1, to clamp the heel, it swings the gage 48 downwardly away from the side of the blank 20 to a position below the blank, so that the cutter 42 can cut the surface lately engaged by the side gage. Owing to the slope of the shaft 50 this downward movement of the gage 48 has an outward component so that the contact member 52 immediately moves laterally away from the blank 20 as it begins to move downward (Fig. 3), thus avoiding any disturbance of the blank as the gage is removed. The downward movement of the gage prevents any ossibility of its striking the cutter when the ack is swung over for the beginning of the cut.

A coil spring 62, wound around the shaft 50 and connecting it to the frame of the jack, tends to hold the gage in operative position, and a pin-andslot connection 64 between the link 54 and the boss 56 insures that the gage shall reach its operative position irrespective whether the position of the lever 38 when the jack is unolamped is accurate.

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

1. In a heel cutting machine, a jack arranged to clamp a heel blank, and a pivotally mounted gage arranged to contact with a surface of the blank and to be swung downwardly to an inoperative position after the blank has been gaged, the pivotal axis of the gage being substantially oblique to the gaged surface of the blank whereby the gage will move out of contact with said surface in its initial movement toward inoperative position.

2. In a wood heel cutting machine, a jack arranged to hold a wood heel blank, a lever for causing the jack to clamp the blank, and a gage arranged to engage the blank, said gage being moved downwardly from the gaged surfaceof theblank upon blank clampin movement of the lever.

3. In a wood heel cutting machine, a jack arranged to hold a wood heel blank, a lever for causing the jack to clamp the blank, and a gage arranged to engage the blank, said gage being moved downwardly from the gaged surface of the blank, to a position be low the lower face of the blank, upon blank clamping movement of the lever.

4. In a wood heel cutting machine,'a jack arranged to hold a heel blank, a lever for causing the jack to clamp the blank, a gage arranged to engage the blank, and'connections between the gage and the lever whereby movement of the lever in clamping the blank moves the gage downwardly from the surface gaged thereby.

5. In a wood heel cutting machine, a cutter, a jack arranged to hold a heel blank, a lever for operating the jack to carry a heel blank therein past the cutter, a pivoted gage arranged to swing into and out of engagement with the heel blank, and a link pivoted to the gage below the pivotal axis of the gage and connecting the gage with the operating lever whereby the lever operates the gage.

6. In a wood heel cutting machine, a jack arranged to clamp a wood heel blank, a pivoted gage arranged to swing downwardly past a side face of a blank in the jack, and a stop on the jack arran ed to arrestthe swinging movement of the gage when it reachesoperative position.

7 In a wood heel cutting machine, a cutter, a jack for clamping a heel blank in inverted position and moving it past the cutter, a gage for gaging a surface of the blank, and movable from gaging position, and a single means for causing the jack to clamp the blank and for moving the gage downwardly from gaging position prior to the trimming of the gaged surface by the cutter.

In testimony whereof I have signed my name to this specification.

RALPH F. KNIGHT.