US931946A - Tack-pulling machine. - Google Patents

Description

L. V. MILLbn.

TACK PULLING MACHINE.

l APPLIGATIDN FILED NOV. 30, 1908. 93 1 ,946 Patented Aug. 24. M909 2 SHEETS-SHEET l.

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L. V. MILLER.

TAGK PULLING MACHINE.

APPLICATION FILED H0130, 1908,

`Patented Aug. 24, 1909.

2 SHEETS-SHEET 2.

l narrar onirica.

LESLIE V. MLLEE, F CHICAGO, ILLINOIS, ASSIGNOB T0 UNITED SHQE MACEINEEYUOPANY,

0l PATEESGN, NEW JERSEY, A CORPORATION F NEW JERSEY. I

Tacx-roxanne Insomma.

Specification o Letters Patent.

Patented Aug. 2a, i969.

Application filed November 30, 1908. Serial No. 466,303

To all whom it may concern:

Be it known that I, LESLIE V. MILLER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Taclr- Pullin Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to machines for pulling tacks from a lasted shoe.

The principal object of the present invention is to produce a tack pulling machine comprising a rotary tack pulling wheel the blades of Which will not deface or otherwise injure theshoe upper and to which the tacks can be fed transversely.

YAnother object of the present invention is to produce a tack pullin mach-ine comprising a tack pulling Whee having a plurality of tack pul ing blades arranged to act successively on atack and separated from each other a greater angular distance aboutthe periphery of the Wheel than has heretofore been possible.

y Other objects of the invention are to improve the construction of tack pulling machines which comprise a rotary tack` pulling Wheel and render themunore certain and efficient in operation. l

With the above objects in` View a feature of the present invention contemplates the provision of a rotary tack pulling wheel having one or more tack pulling blades vat its periphery and shaped or constructed toforni a guard for the shoe upper at each end of the blade or blades and to provide a recess extending transversely of the Wheel to permit a tak to be fed transversely to'` the Wheel into the path of the blade or blades. This feature ofthe invention broadly considered' may be embodied in. any suitable construction of Wheel which provides `a guard for the shoe upper at each end .ofthe bladeand a recess to admita tack fed transversely to the Wheel. 'In the simplest and most eflicient construction which has as yet been devised,

however, the periphery of the Wheel' is pro' vided -with a groove and-the tack pulling bladeor blades extend across this groove so that the Wall for vrib -at each side of .the grovesforms a guard for the shoe upper. This grhokopens into the recess in the 'Wheel which admits the tack into the path of the tack pulling blade, and guides the taclr to the blade so that it is engaged by the center of the blade and pulled from the shoe without liability of being bent ovento one side of the path of the blade.

Another feature of the present invention contemplates the provision of a rotary tack pulling Wheel provided with a spiral groove on its periphery across which the tacl: pulling blades extend. 'This spiral groove may extend more than once around the Wheel and thus the tack pulling blades can be separated by greater angular distances than would be possible with the saine number of blades arranged in a straight groove extendingbut once around the wheel. The wheel can therefore be inade smaller and rotated at a higher rate of speed without decreasing the intervals between successive operations of the blades. Also a. narrow groove can be used so that the upper is protected by the walls of the groove from injury by the blades and at the same tiineithe blades, although narrow, extend collectively over as great a portion of the shoe as would a long blade. According to this feature of the invention the tack pulling Wheel may or may not be provided with a'recess to admit a tack fed transversely to the Wheel into the path of the blades since the spirally grooved wheel can be used to ad vantage in extracting a tack presented radially to the wheel as will be obvious to those skilled in the art. lt is preferred, however, to arrange theA spiral groove so that it opens on the face'or end of the Wheel and thereby forms a recess to receive the tack. Then the spiral groove is arranged in this manner a lasted shoe can be pressed. against the periphery of the wheel, which then forms .a guide and support for the shoe, and moved tack pulling machine embodying the same in their referred form. Fig. 2 is a View in side yeFevation of the machine illustrated in'. F ig. vl. Fig. 3 is an end View partly in section of the improved rotary tack pulling wheel for pulliug'thc lasting tacks. Fig. t

is a sectional view ofthe wheel illustrated 111 Fig. 3, taken on the lmc'l, of said ligure.. Fig. 5 is a diagrammatic view showing the development of the grooved periphery of the wheel illustrated in Figs. 3 and 4. Fig. 6 is a View in side elevation of a tack pulling wheel adapted for pulling insole tacks and Fig. 7 is a view in end elevation partly in section oi the wheel illustrated in Fig. 6.

The machine in which the several features of the present invention have been embodied, in addition to the wheel for pulling the side or lasting tacks from a slice, is also provided with a wheel of smaller diameter adapted to pull the sole tacks which secure the insole to the last. These two `wheels are secured to a horizontal rotary shaft `l journaled in the upper portion of a suitable frame 2 and provided at its rear end with fast and loose pulleys. To shift the driving belt from one of these pulleys to the other, a forked belt-shifter 8 is provided pivotally mounted at its lower end upon abracket projecting from the frame of the machine and` provided with a hand piece 4l by which it can be conveniently moved' by the' operator. The insole tack pulling wheel is secured to vthe extreme forward end of the shaft l and the wheel' for pulling the side or lasting tacks is secured to' the Shaft at a convenient distance from the insole tack pulling wheel to enable the operator to readily present the shoe to either wheel.

rPhe wheel for pulling the 'side or lasting tacks comprises a hub 5 which is secured to the shaft l .by means of a set screw 6, and a rim 7 projecting from the hub longitudinally ofthe s' aft. The peripheral :tace of the wheel is provided with a rib 8 which eX- tends spirally around the wheel somewhat less than three times, so that a spiral groove 9 is formed by the rib extending somewhat .less than twice around the wheel. The tack pulling blades l0 are mounted in this groove at angular distances of about 2l()o and are secured to the wheel by means of nuts 11 engaging screw threads on the shanks of the blades which extend radially through the rim. The spiral arrangement of the rib forms an opening or recess l2 at A"he side of the wheel into which a projecting lasting tack can be fed transversely to the wheel so as to enter the groove and be engaged yby the i first tack pulling blade. The rst tack pullving blade is located a short distance from the end of the groove so that when the blade engages a tack the upper of the shoe is protected from injury by the rib or wall or" the groove at each end of the blade. To prevent the end of the ribfrom injuring the upper, it. begins at the peripheral surface of the rim of the wheel and rises gradually to its full height. ln operation the shoe is pressed upwardly against the wheel and.:

ldie spiral rib toi-ms a supportand' guide sarees.

for the shoe. The shoe is moved to feed the tacks transversely across the wheel and as each tack engages the side of the rib it is guided thereby and finally enters the groeve so as to be engaged by the first tack pulling blade. If this blade fails to completely remove the tack, the tack remainsI in engagement with the groove and after the wheel 'has made of a revolution the tack is engage' .by the second blade. It this blade fails to remove the tack, the third blade is caused toengage the tack after the wheel has made another of va revolution. To cause the three blades to act successively on theA tack, approximately two complete revolutions of the tack pulling wheel is required. If desired, the tack can be presentedradially to the wheel. In such case the rim of the wheel presents a wide surface against any portion of which. the tack may be pressed. When the tack is presented in this manner it rests against the spiral rib until, during .the rotation of the wheel, the groetfe engages the tack, when the tack will be guided accurately into engagement with one of the blades.

The wheel for pulling sole tacks, with which the machine is provided, consists out a central hub 13 secured to the shaft, a fiat disk 14 at each end of the hub projecting radially beyond the hub to formeradial flanges, and two tack pulling blades l5 seated in slots in the flanges and secured to .liattened lportions of the hub by screws l. The tack pulling blades extend substantially 'Iinsh with or slightly beyond the radial iances` and are adapted to pass beneath the headbofa sole tack when the sole of a shoe is pressed upwardly against the iianges of the Wheel. The flanges of the wheeliform a supportv or guide over which the shoe sole can be con veniently moved to bring sole tacks into proper position with relationv to the tack pulling blades. During this movement et the shoe it 'is conveniently pressed one Iiange only so that the blades do not engage the sole until the tack is in position. 'lo enable the shoe to be moved while in a substantially horizontal position, and also to enable the slice to be more conveniently manipulated without being brought into contact with the wheel for pulling side tacks, the outer flange of the wheel is preferably made smaller than the other flange so that the wheel as a whole is somewhat frusto 'conical in appearance.

The tacks pulled from the shoe by the tack pulling wheels are thrown from the wheels with considerable force, To collect these tacks a combined guard and chute 17 is provided which is located at one side of the wheels and extends over the Wheels. This chute is supported on a bracket 18 se cured to the Lipper portion of the machine iframe.' IThe upper portion of one o1" the walls of this chute is formed of a sweetie/19 with a tack pulling blade at its periphery,

with a guard for the shoe upper at each end of 'the blade, and with a recess to admit a tack fed transversely to the wheel into the path of the blade.

3. A rotar y tack pulling wheel provided with a spira groove on its peri hery and with a plurality /f tack pulling lades eX- tending across said groove.

4. A rotary tack pulling Wheel provided with a spiral groove on its lperi hery opening into-a recess to receive a tac fed transversely to the Wheel and with a tack pulling blade extending across said groove:

In testimonfy whereof I aflix my slgnature, in presence o Witnesses.

LESLIE V. MILLER. Witnesses HENRY B. M. BERnN'rsoN, A. A. PHELPs, THEODORE SMITH.

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