US1195124A - Lasting-machine - Google Patents

Description

E. E. WINKLEY.

LASTING MACHINE.

APPLICATION FILED MAR. 26, 1914.

Patented Aug. 15, 1916.

4 SHEETS-SHEET l- E. E. WINKLEY.

LASTING MACHINE.

APPLICATION FILED MAR. 26, 1914.

1,1 95,124. Patented Aug. 15,1916.

4 SHEETS-SHEET 2.

orator,

ERAST'US E. VTINKLEY, 0F LYNN, IVIAESACHUSETTS.

LASTING-MACHINE.

Specification of Letters Patent.

Patented Au Application filed March 26, 191 Serial No. 827,317.

To all whom it may concern:

Be it known that I, ERAs'rUs E. WINK- LuY, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Lasting-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.

This invention relates to lasting machines, and more particularly to such machines of the hand method type, and is an improvement on the mechanisms and features of invention described and claimed in my prior Letters Patent of the United States, No. 1,057,606, granted April 1, 1913.

It is desirable in lasting the better grade of shoes and in lasting shoes in which the pulling over operation has been inefliciently performed, for the operator, in order to properly last the shank, to perform this step in the operation by hand. A spindle is commonly provided upon the bench at one side of the machine and prior to lasting one side of the shoe, the operator will spindle the last, seize the margin of the upper with hand lasting pincers, at a point about opposite the ball of the last, and will then draw on the upper with a slow steady pull in a direction toward the heel and across the instep, such a pull being necessary to properly draw the upper at the instep to the wood. The upper at this point is generally slack and stands out from the body of the last owing to the sharp inward curvature of the last at the shank and a sharp quick pull which is sufficient to properly draw over the upper at the ball of the last, would not effectually draw over the upper at this point. After having thus stretched th upper and drawn it to the wood it is held tightly in place by the operator until the first tack has been driven by the machine at about the ball of the last. After one side of the shoe has been lasted, the last is again spindled, the margin of the upper at the opposite side of the ball of the shoe is seized by hand pincers at the instep and the upper is drawn to the wood by stretching it over that side of the last. A tack is driven at this point and the remainder of the upper upon this side of the shoe is then asted as before.

The principal object of the present invat the shank may be readily seized by the pincers, and then to assist the pincers to produce a long pull in lasting this portion of the upper.

Another feature of the invention contemplates the provision of improved mechanism for driving the machine at speed slower than the normal speed during the lasting operation at the shank whereby to obtain the desired slow and steady pull on the upper at this point.

In accordance with this object, and such others as may hereinafter appear, as will readily be recognized by those skilled in the art, the invention comprises the features,

.mechanisms and combinations of parts here inafter described and particularly pointed out in the appended claims.

In the accompanying drawings illustrating the preferred form of the invention, Figure 1 is an elevation of the ri ht hand side of the machine, the parts being shown, at rest, before an operation is commenced; Fig. 2 is an elevation of the lower part of the right hand side of the machine illustrating the driving mechanism, which, with .Fig. 1, forms a complete side elevation;

Fig. 3 is an elevation, in section, on the line 33 of h 1, looking forward, this section line being shown as cutting through the driving shaft at the point where the wedge for throwing in the slow speed mechanism is located, the rod for operating this wedge being broken away and all the parts below it being omitted so as to show a por tion of the connections for throwing in the high speed mechanism, the section line then cutting through the frame of the machine at a point just below and forward of the high speed driving pulley; Fig. is an elevation, in section, on the line l-.4i of Fig. 1, looking forward, this section line cutting through the driving shaft just in the rear of the slow speed friction clutch and through the frame of the machine a point below and a little to the rear of this clutch,

sitions assumed by themechanism for looking the high speed driving mechanism in its operative position; and Fig. 9 is a lon- I gitudmal section on hne 99 of Fig. 3 of the wedge mechanism for connecting the slow speed friction clutch.

In the embodiment of the invention illustrated in the drawings, the lasting head, in so far as the lasting pincers and their operating mechanism, the tacker and its tack supplying and operation mechanism, and other features relating to the conforming and securing of the upper in place are con cerned, may be, and preferably is, the same as illustrated and described in Letters Patent of the United States to S. W. Ladd and It. F. McFeely No. 584;,7H, and S. V. Ladd No. 597,321, to which reference may be had for a full disclosure thereof, although it is to be understood that the features which are the subject of the present invention are capable of general application upon various types of hand method lasting machines, and the present invention is not, therefore, to be considered as limited in its use to the particular type of lasting machine head shown in the drawings.

Referring to Fig. 1, the pincers are indicated at 1 and the tack driver at 2, the pincers being operated by trains of mechanism'leading to cams 3 and 5 on the main driving shaft 6 (the rear portion only of this driving shaft being shown in Fig. l by dotted lines), the tack block being operated by mechanism operated by cam 4c on said shaft, and the tack driver being operated by a cam (not shown) at the forward end of the driving shaft and a spring within the housing 7, all as illustrated and described in said Letters Patent hereinbefore referred to.

As hereinbefore stated, in many cases the shoe comes to the lasting machine operative with its upper at the shank improperly fitted, so that when the shoe is placed with its sole against the hold down 8 the upper is not in a position where the downward, or reaching, movement of the pincers can seize it. It is, therefore, desirable to provide means which will permitthe upper at the shank to be seized by the pincers whatever its length or its position relative to the last may be, and to this end, as in'myprior patent, means is provided for raising the 7 hold down a suflicient distance to enable the pincers to reach and seize all improperly cut or fitted uppers. Such means will now be described and it will be seen that the mechanism utilized to raise-the hold down is so designed that it may or may not be used, that is, if the operative finds that the upper is so fitted that it is necessary to bring the shoe nearer to the pincers than ordinarily, this mechanism can be thrown into operation, and if'not thrown into operation the position of the hold downis not affected by the ordinary operation of the machine.

Referring now to Fig. l, the machine head has projecting forwardly from its frame the usual bracket 9 for supporting the" hold down 8. This bracket has a depending part 10 at its outer end which part is provided with a vertical guideway in which there is mounted a slide 11 (see dotted lines Fig.

1), the lower end ofwhich carriesa sleeve or housing 12 within which the hold down may be glven an in and out movement relative to the pincers. The hold down is provided on its upper side with a rack (not shown) engaged by the teeth of the segment 13 pivotally mounted on the slide 11 and" having a substantially horizontal arm 14: projecting rearwardly through a slot in the part 10. The-outer end of this arm 1a is provided with a ball and the arm is permitted a limited angular movement between two vertically arranged, adjustable stops 15 carried by the dependingpart '10 of the bracket 9. The distance between the acting ends of the stops 15 determines the amount of movement given to the hold down 8 within its housing 12, this movement being effected by a lifting of the slide 11 through mechanism now to be described.

The upper end of the slide 11 has pivoted thereto the lower end of a link 16, the upper end of which link is in turn pivoted to a horizontal arm of vertically arranged bell crank lever 17 fulcrumed on a lug projecting from the bracket 9. 'The vertical arm of the bell crank 17 has pivoted theretoone end of a' slide rod 18which extends rearwardly and is guided by an aperture formed coiled about it an expansion spring 20, one

'in a portion 19 of the frame. This rod has end of which bears'against the part 19 of tending lever 25 which, as shown in dotted V lines in Figs. 3"and 4, isforked and'hasa hub on the shaft 24 at each side of the shaft engaging hubof the lever 23. The free end of-the lever 25 carries a cam roll 26 (Figs;

1 and 4:) which normally is held, by the spring 20, in contact with the plane, rear face of a cam disk 27 secured to the driving shaft just at the rear of the cam disk 5 which controls the updraw movement of the pincers. Owing to the keyed connection of the lever 25 with the rock shaft 24 this lever can be slid longitudinally of said shaft to carry the roll 26 outwardly from the driving shaft 6 across the rear face of the cam disk 27 to a position opposite a face cam 28 (Fig. 1) at the margin of said disk. hen this position is reached by the roll the expansion of the spring which is then permitted will rock the shaft 24 and seat the roll 26 on the plane surface 29 (Fig. 1) of said cam 28. Deferring until later the description of a further function of the spring 20, the means for sliding the lever along the rock shaft 24, and across the face of the cam disk 27, will now be described.

Referring to the dotted lines in Figs. 1, 3 and t, it is seen that just below the rock shaft 24:, and extending at right angles thereto, is a pivot rod 30. This rod has pivoted thereon a lever having two oppositely extending horizontal arms 31 and 32 and a two part vertical arm 33. Une of the hubs of the lever 25 is provided with oppositely disposed vertical grooves which are'engaged by pins, one in each of the free ends of the two parts of the arm 33. By means of this connection, when the urn 33 is moved angularly about its pivot 36, the lever 25 will be slid along the rock shaft 24:. The means for moving the three armed lever angularly about the pivot comprises a link, or connecting rod 3% having its lower end pivoted to the arm 31, and. its upper end pivoted. to a parallel arm 35 secured to the rear end of a rock shaft 36 extending forwardly, parallel to the pivot rod 30, and journaled in bearings 37 (Fig. 1) on the machine frame. At the forward end of the rock shaft 36, witnin convenient reach of the operative, there is secured a second lever 38 in the form of a handle.

With the construction just described, in order to move the cam roll 26 from its inacti ve to its active position it is only necessary for the o1 erative todepress the handle 38 which will turn the three armed lever in a dir ction to slide the roll 26 outwardly and then, as described, the expansion of the spring 20 will, through its thrust on the colar 21, move the slide rod rearwardly, to rock the shaft 2% and seat the roll onthe surface 29 of the cam 28 ready to be operated on by said cam when the driving shaft 6 is rotated. A further consequence of the rearward movement of the slide rod 18 is to rock the bell crank 17 about its fulcrum in a direction to raise the slide 11 and with it the hold down 8. As the slide 11 rises the end of the arm 14 will engage the upper stop 15 and turn the segment 13 in a direction to move the hold down outwardly a short distance within its housing 12. The upward and outward movement of the hold down 8 is the same as described and illustrated in my prior patent hereinbefore referred to.

After the, machine has been started the rotation of the cam disk 27 will cause the cam roll 26 to travel up the incline of the cam 28 and move the slide rod 18 forward whereby the bell crank 17 is moved in a reverse direction to that just described and the hold down is brought inward and lowered in a manner described in my prior patent. The relation of the cam 28 to the cams for operating the pincers is such that the downward movement of the hold down occurs while the pincers are performing their upward movement, by virtue of which action the length of this movement is materially increased. This vertical movement of the ,hold down is generally desirable only while the single lasting operation at the shank is being performed, and, therefore, the cam roll 26 should be shifted back to its inactive position after the completion of a single lasting operation, so that the hold down will thereafter remain in its normal position. Preferably the roll 26 is shifted back on to the plane rear face of the cam disk 27 after the updraw movement of the pincers has been completed. This is accomplished by a tappet cam (Figs. 1 and 4) carried on the periphery of the cam disk 27 in such angular relation to the cam 28 that it will engage and depress the arm 32 of the three armed lever hereinbefore described at a convenient time after the roll 26 has reached the upper end of the incline forming the cam 28. The depression of the arm 32 slides the lever inward toward the driving shaft and acts also to elevate the connecting rod and, through the rock shaft 36, the handle 38. The parts hereinbefore described are thus all returned to their original position, and are not again brought into use unless the operative finds it desirable to again utilize a long pull.

Power is supplied to the machine to rotate the driving shaft 6 through the fast pulley to (Fig. mounted on the outer end of the power shaft ll suitably journaled in bearings formed at the base of the column which supports the lasting head. Besides the fast pulley 40 there is the usual loose pulley 42.

Two sets of driving connections run from the power shaft 11 to the driving shaft 6, one set for driving the shaft 6 at slow speed and the other set for driving said shaft ata high speed, which is the normal speed of the machine. The slotv speed driving connections are controlled by a friction clutch on the driving shaft 6, while the high speed connections are controlled by another friction clutch on the power shaft ll.

Considering first the slow speed driving mechanism the power shaft 41 has secured thereon a spiral gear 43 (Fig. 2) which has intermeshing therewith, and drives, a second spiral gear 44 mounted on the lower end of a vertical shaft 45 which is stepped in a suitable hanger 46 secured to the base of the column as shown at 47 (Fig. 2). The upper end of the vertical shaft 45 (see Figs. 1 and 4) is journaled in a hanger 48 mounted on the machine frame and carries a worm 49 which meshes with and drives a worm gear 50 (Figs. 1 and 9) loosely mounted on the driving shaft 6. As the hanger 48 is not vertically above the hanger 46 the shaft 4-5 is formed in three parts and the central part is connected to the end parts by universal joints 51. These connections provide for a continuous rotation of the form wheel 50 from the power shaft 41. The inner end 511 of the worm 50 is connected by an ordinary toothed split joint 52 (Figs. 3 and 9) to the outer end of the hub 53 of the movable member 54 of the friction clutch, the

other member 55 of which is formed on the rear face of the usual driving pulley 56 found in hand method lasting machines of the type illustrated. The two clutch memhers and 55 are engaged, so as to cause rotation of the shaft 6, under power supplied from the worm 50 by wedging these two members together in the usual manner. The wedge is shown at 57 (Figs. 1, 3 and 9) and is bifurcated as usual, straddling the driving shaft 6." The wedge bears with its oblique surface upon a transverse plate 58 carried by a sleeve 59 surrounding the clutch 52 and secured to the hub 53 in the usual manner to permit rotation of the hub within the sleeve, as clearly shown in Fig. 9. The vertically movable frame 60 which carries the wedge 57 is provided with a pair of side wings G1 which extend forwardly and each of uhich carries a roll 62 arranged to bear on the forward or under side of the plate 58. l l hen the wedge 57 is pulled down, by means presently to be described, it wedges the plate 58 forward, opening the slip joint slightly, and this plate, through its connection with the hub 53, forces the part 54 of I the friction clutch into engagement with the part 55 which rotates the pulley 56 and,

through it, the driving shaft 6. Such rotation of the driving shaft will continue until the clutch 5455 is-disconneeted.

Power for the high speed drive is obtained 7 from a friction clutch, comprising a mov- 4 able friction disk 63 (Fig. 2) carried on the hub of the pulley 64 loosely mounted on the power shaft 41 and adapted to be forced into engagement w1th the second frlctlon disk 65 mounted for rotation with the shaft 41. A sliding sleeve, as shown in the patents referred to, is connected to the forward end of the hub of the pulley 64, and

66 at its forward end.

disks are brought into engagement with each 7 other by forcing a wedge 67 past the face 66 and thus moving the disk 63 longitudinally of the shaft 41. The spring 68, having one end attached to the sliding sleeve and its other end attached to the machine frame, keeps the Wedge 67 and face 66 in contact with each other. A belt runs from the pulley 64 on the shaft 41 over the pul ley 56 on the shaft 6 sothat the shaft 6 is driven directly fromthe shaft 41 when the clutch members 63-65 are engaged.

The wedge 67, through which the high speed clutch is connected, is moved in a direction to connect said clutch by means of a treadle 69 (Fig. 2) pivoted at 70 in the 7 lower portion of the machine column. This treadle is pivotally connected at its inner end to the lower arm 71 of the toggle, the upper arm 72 of which is pivoted to the wedge 67. The purpose of this toggle will presently be explained, it being sufficient now to say that when the slow speeddriving mechanism is not in use the toggle is normally unbroken, that is, it is in the position shown in Fig. 2, and erforms the function of a rigid rod by whlch the wedge 67 may be moved.

The wedge 57, the movement of which causes engagement between the clutch mem bers 54-55 on the shaft 6, is operated from a treadle 7 3 (Fig. 2), also fulcrumed on the The functionof the recessed rod 77 will be explained after describing the remainder of the connections for operating the wedge 57.

To the upper end of the push rod 75 there.

is secured a collar 79 having an ear to which is pivoted the lower end of a vertical link" 7 80, the upper end of which link is pivoted to the forward end of a lever 81 fulcrumed on a pin 82 Figs. 1 and 4) journaled in a hanger 83 (Fig. 4) depending from the frameof the machine. The rear end of the lever 81 has pivoted thereto the lower end of a vertical link 84, the upper end of which is in turn pivoted to the lower end of a second push rod 85 (Fig. 1), the upper end of which carries the vertically movable frame 60 which supports the wedge 57.

Coiled around the push rod 85 is a spring 86 seated between the frame 60-and the upper end of the vertical bearing within which the push rod 85 slides. This spring.

normally maintains the wedge 57 in its upper position as shown in Fig. 1, and when the treadle 73' has been depressed, it, owing to the downward movement of the push rod 85, is compressed.

The purpose of the recessed rod 77 forming an extension of the push rod 75 will now be explained. The movement of the rod 77 controls the brake for stopping the machine at a predetermined point in the cycle of operations. Referring now to Figs. 1 and 3, the brake shoe 87 is shown as being mounted on the end of an arm 88, is pivoted on the machine frame and is provided with a suitably mounted spring 89 which tends to maintain the brake shoe in contact with the inner surface of the rim at the forward side of the pulley 56. The brake arm 88 is provided with a laterally projecting pin 90 (dot-ted lines Fig. 1) which is engaged by a groove formed by a pair of ears 91 (Figs. 1 and 2) projecting laterally from the rod 77. By means of this connection when the rod 7 7 is moved upwardly by the upward movement of the push rod 75 it carries the brake arm 88 upwardly also and removes the brake shoe 87 from contact with its breaking surface leaving the pulley 56 free to rotate. It will be observed that between the upper end of the unreduced portion of the push rod 75 and the lower end of the recessed rod 77 there is a space which gives time for effecting an engagement of the clutch members 54-55 at about the same time that the rod 77 effects a disengagement of the brake shoe 87 from the pulley 56. The extreme upper end of the rod 77 is provided with two central ears 92 forming a groove within which is engaged a pin 93 projecting laterally from a lever 94 pivoted to the frame of the machine at 95 (see Fig. 3) which lever carries a roll 96 adapted to run upon a circular cam track 97 formed on the forward face of the pulley 56. This cam track is provided with a depression 98 and when the roll 90 rests in this depression, as shown in Fig. 3, the brake shoe S7 is permitted to be forced by its springinto engagement with the riln of the pulley 56 to stop the rotation of the driving shaft. As long, however, as the roll 96 runs on the remaining, circular portion of the cam track 97, the brake shoe S7 is positively held in its raised and inoperative position. It is thus seen that when the treadle 73 is depressed to throw in the slow speed driving mechanism the brake shoe S7 and roll 96 are simultaneously raised by the upward movement of the rod 77, and that the roll 96 is immediately caught, by reason of the rota tion of the pulley 56, on the higher portion of the cam track 97 and maintains the brake shoe 87 out of engagement with its braking surface until a complete revolution of the driving shaft has been made, that is, until the depression 98 again reaches the position shown in Fig. 3, at which time the brake again becomes active and, one or the other of the friction clutches having been disconnected, stops the machine.

Means is provided for locking the wedge 57 in its lowered position so that it is unnecessary for the operative to retain his foot on the treadle 73 after it has once been depressed. Referring now more particularly to 1 and l, the rod 85 is provided with a pin 99 extending laterally through a slot in the forward side of the vertical bearing for the rod and as the rod is moved downward to seat the wedge 57 in its clutch operating position this pin is moved from its full line to its dotted line position shown in ig. 1. As it moves downward it passes beyow the end of a locking wedge 100 which is pivoted on a pin 101 projecting from the frame and as soon as the pin 99 reaches its lower or dotted line position, the wedge 100 is drawn by means of the spring 102 from its full line to its dotted line position shown in Fig. 4. While in its dotted line position the wedge 100 acts as a strut to prevent any upward movement of the rod 85 under the influence of the spring 86, which, having been compressed, tends constantly to raise the rod and release the clutch 54e55.

As already stated the long slow pull on the upper is necessary only in the lasting movement at the shank or waist of the shoe, and, furthermore, it is not essential that this slow speed of the machine be continued after the updraw movement of the pincers has been completed. Means, is, therefore, provided which will release the wedge 57 to the action of the coiled spring 86 so that the clutch 5l55 will be disconnected and the slow speed of the machine thrown out, preferably, after the completion of the u )draw movement of the pincers. To this enc there is provided on the flange at the rear side of the pulley 56 a tappet cam 103 shown in full lines in Fig. 1, and in dotted lines in r Fig. 1, which cam is so located with refer ence to the angular movement of the pulley 56 that it will throw the connections, now to be described, in a direction to withdraw the wedge block 100 from its dotted line to its full line position in Fig. 4, and permit the rod 85 to move upwardly under the influence of the spring 86 thus disconnecting the wedge 5455. Still referring to Figs. 1 and 1, the shaft 82 forming the fulcrum of the lever 81 has secured to its right hand end, viewing Fig. 4, a vertical lever arm 104:, which is connected by a link 105 to the lower end of a lever 106 centrally pivoted on the frame of the machine. The upper end of the lever 106 is provided with a laterally projecting pin 107 which engages a vertical groove formed in the hub of a lever arm 108. This hub is slidably mounted upon a horizontal pin 109 having a bearing at its forward end in a bracket 110 (Fig. 1) and at its rear end in the side of the vertical bearing for the rod 85. The lever 108 carries a roll 111 adapted to bear on the inner surface of the rear flange of the pulley 56 and is held in contact with said flange by means of a suitably connected coiled spring 112 (Fig. 4). When the pivot 82 of the lever 81 is rocked by the movement of said lever, in drawing the wedge 57 downward, the lever arm 10a is swung to the right, viewing Fig. 1, which, through the connections described, acts to slide the hub of the lever arm 108 to the left along the pivot pin 109 and move the roll 111 inward into the path of movement of the tappetcam 103. which, as shown in Fig. 1, is only of about one-half the width of the rear flange on the pulley 56, and unless the roll 111 is moved inward will pass said roll, without engagement therewith, as the pulley rotates. After the roll 111 has been moved forward, however, itis engaged by the tappet cam 103 and lifted. As the hub of the lever 108 is loose upon its pivot pin 109, the lifting of the lever arm under the influence of the tappet cam 103 would ordinarily have no effect upon the mechanism, but extending rearwardly from said lever arm 108 is a horizontal pin 1112 which engages a groove or recess in a second upwardly projecting arm 113, also loosely mounted on the pivot pin 109, and moves said arm to the right, viewing Fig. f. This arm 113 is provided at its upper end with a laterally projecting pin 11 1 (see dotted lines in Figs. 1 and 1) and the movement of this arm to the right, as described, causes this pin to engage a laterally projecting ear 115 formed on the rear edge of the wedge block 100. The movement of the arm 113 under the influence of the tappet cam 103, therefore, forces thewedge block 100 from its dotted line to its full line position in Fig. 4, thus removing it from above the pin 99 and permitting the rod 85 with its wedge block 57 to be raised under the influence of the coiled spring 86. As the wedge 57 moves upward the engagement of its oblique face on one side of the plate 58, and the rolls 62 on the other side of said plate, act on the plate in a manner to positively withdraw the movable clutch member 5 1 from its 00- operating member 55 and thus disconnect the slow speed driving mechanism from its control of the driving shaft 6.

It will be observed that the machine is not now stopped because the roll 96 (Fig. 3) is, at the time of the disconnection of the clutch 5455, riding upon the high part of the cam track 97 and thus holding the brake shoe 87 from engaging its braking surface. It is desirable, from this point in the operation of lasting the shoe, to run the machine at its normal, or high, speed and, therefore,

6365 to the high speed driving mechanism in such time relation to the disconnectionof the slow speed driving mechanism as will continue the operation of the machine without break. Such a change from the slow to the high speed is preferably performed by the machine itself, automatically, without any attention on the part of the opera tive. In the form of the invention illustrated in the drawings, after such automatic connection, the high speed will'continue until the completion of one revolution of the driving shaft 6 at which time the roll 96 will enter the depression 98 in the cam track 97 thus lowering the rod 7 7, permitting the brake shoe 87 to engage the braking surface and, through connections presently to be described, lowering the wedge 67 and disconnectingthe high speed clutch 6365. After such disconnection one lasting operation will have been performed, and further lasting operations may be performed by merely depressing the high speed treadle 69 which will cause the machine to be at the high speed without any reference whatever to the slow speed driving mechanism.

The means for automatically drawing the wedge 67 (Fig. 2) upward so as to cause an operative engagement of the two parts 63 and of the high speed friction clutch is shown best in Figs. 1 and 1. Referring to these figures the drive shaft e15, it will be remembered, is continuously rotated from the power shaft 41 and on this shaft 15 there is mounted a face cam 116. This cam is normally disconnected and loose on the shaft 15, but it may be connected to rotate with the shaft by the operation of a Horton clutch, which is connected with the cam and indicated merely by the ring 117 and the cage tripping lug 118 shown in full lines in Fig. 1 and in dotted lines in Fig. l. The pin 114: at the upper end of the arm 113 is extended sufficiently so as to pivot thereon one end of a link 119, the other end of which link is pivoted to the vertical arm 120 of a bell crank lever fulcrumed on a pin 121 held in bearings on the machine frame. The horizontal arm 122 of this bell crank lever bears against the lug 118, and while so engaged maintains the clutch disconnected. In this construction when the lever arm 108 is raised by the tappet cam 103 the movement of the connected lever arm 113, to the right in Fig. 4:, draws the link 119 to the right also and thus moves the bell crank arm 122 out of engagement with the lug 118. This permits the Horton clutch to connect the cam 116 with the shaft 15 and cause this cam to rotate therewith. The surface of the cam 116 is engaged by a roll 123 at the rear end of a horizontal lever 1% having a hub secured to one end of a short horizontal rock shaft 125 journaled in the machine frame (see Fig. t). A second lever 1124i has a hub secured to the other end of the shaft 125 and extends forwardly. From the free end of the lever 112s there depends a link 126 (Figs. 1 and 3) the lower end of which link is pivoted to a sleeve 127 clamped on the upper end of a vertical rod 128 (Figs. 1, 2 and the lower end of which is seated in a socket at the upper end of a member 129 which straddles the power shaft 11 and carries the wedge 67 at its lower end.

By means of the construction just described, it is seen that when the slow speed clutch 5a155 is disconnected the cam 116 is connected to be rotated by the shaft 45 so that the cam 116 operates immediately to depress the outer end of the lever 1124:, raise the rod 128, and thus force the wedge 67 against the complemental oblique surface (36 to connect the clutch for the high speed driving mechanism. By this mechanism the high speed is immediately thrown into operation when control of the driving shaft by the slow speed mechanism, is lost.

In order to prevent the operative from again throwing in the slow speed mechanism while the high speed mechanism is operating the machine, the rod 7 5 (Fig. 2) is provided, intermediate its length, with a toggle comprising arms 130 and 131. To the knuckle of this toggle there is pivoted. one end-of a link 132, the other end of which is pivoted to the lower end of a lever arm 133 (Figs. 1, 2 and 1) the upper end of which lever is secured by a set screw to the rock shaft 125. Thus when the shaft is rocked by movement of the lever 124:, the lever arm 133 is moved to the left in Figs. 1 and 2, which breaks the toggle 130131, as shown in dotted lines in Fig. 2, and renders the rod inoperative to actuate the slow speed driving mechanism.

in the breaking of the toggle 130-131, when the rod is raised by the spring 86 to remove the wedge 57 from its operative position and disconnect the slow speed clutch, the rod 7 5 drops to the position it occupied befor the treadle 73 was depressed. The rod 77, however, does not drop as this rod is held up by the hearing which the cam roll 96 has upon the cam track 97.

It will be observed that after the cam 116 has rotated a suflicient angular distance to remove its acting portion from the roll 123, the rod 128 would drop by gravitation and disconnect the high speed clutch unless means is provided for locking said rod 128 in its raised position. The rod 77, which has just been referred to as remaining in its raised posit-ion, is, together with certain mechanism new to be described, utilized for holding the rod 128 raised and thus maintaining the high speed clutch members 6365 in operative engagement. The setting of this locking mechanism for the rod 128 starts with the upward movement of the rod 75 in connecting the slow speed clutch. Referring to Figs. 1 and 5, the collar 79 is provided with a lug 134 to which is connected a vertical push rod 135 which projects upwardly from the lug and through a guide hole in a shelf 136 projecting laterally from a collar 137 secured to the lower end of the rod 77. The collar 137 has pivoted thereon a latch 138, the lower edge of which is adapted to be engaged by the rod The latch 138 is provided with a laterally extending finger 139 which bears upon the upper side of a lug 14:0 secured to the rear side of a wedge block 14.1 pivotally mounted upon a collar 142 clamped at' the upper end of the rod 128. The latch 138 and the wedge block 1 11 are adapted to swing in different planes past each other. On the first part the upward movement of the rod 1'5 before its upper end engages the lower end' of the rod 77, the pin 135 is carried upward to the position shown in Fig. 6, and in this movement moves the latch 138 upward, but not out of engagement with the lug 110. A torsion spring 1112, coiled about the pivot of the wedge block 1&1, tends constantly to force said wedge block inward to a position over the shelf 136 and maintains the lug 1 10 in conact with the latch 138. After the upper end of the rod 75 has engaged the lower end of the rod 77, the latch 138 and shelf 136 are carried upward by the upward movement of the rod 77 in disengaging the brake which upward movement disconnects the latch 138 from the lug 140 and permits the spring 1142 to move the wedge block 1+i1 into contact with the edge of the shelf 133, as shown in Fig. 7. The locking mechanism for the high speed clutch remains in he position shown in Fig. 7 until the rod 128 is moved npvmrdly by the lever 1.12%. 'i iis upward movement of the rod 128 lifts the wedge block 1&1 to a position above the shelf 136 and permits its spring 11 12 to move it inward to the dotted line position shown in F 8 where its lower edge bears upon the shelf 136 and causes it to act as a strut to prevent downward movement of the rod 128. At the same time, after the edge block 1 11 moves in over the shelf 13G, lug 14.0 by engaging the under side of the latch 138 pushes this latch to the dotted line position shown in Fig. 8. A pin 1138 limits the inwarc. movement of the latch and wedge block.

As hereinbefore described, the machine stops after a single revolution of the driving shaft 6, that is, when the roll 96 (F ig. 3) drops into the depression 98 formed in the cam track 97. The dropping of the roll 93, under the influence of the brake spring 89, pushes the rod 77 downward and permits the brake shoe 87 to engage its braking surface to stop the machine. The lowering of the rod 77 with its shelf 136 permits the rod 128 to drop and by lowering the wedge (57, disconnect the two members (5365 of the high speed clutch.

In order to return the wedge block 1 11 to the position shown in Fig. 5, so that it will be proi ierly positioned for the next depres sion of the slow speed treadle 73, the shelf 136 is provided with an upwardly extending trip rod 113 (Figs. 5 to 8) which as the rod 7 7 is raised engages, with a beveled end provided for this purpose, a spring block 11-1 attached to the frame of the machine, and removes it from contact with a pin 14:5 carried by an upwardly projecting tail piece 146, attached to the wedge block 1&1. This movement of the spring block 1 1 1 permits the wedge block 14 1 to move inward against the side of the shelf 136 (as in Fig. 7) as it permits free movement of the tail piece 1l 6 to the left. ii hen the wedge block 1&1 is raised and swung to the right, into the dotted line position of Fig. 8, the tail piece 1&6 is swung, by the lug 1 10, to the left into its dotted line position shown in the same figure where it rests above the wedge piece 1%.

Vhen the rod 77, and with it the rod 128, is lowered the wedge block 111 is tipped about its pivot to the left (Fig. 8) by reason of the engagement of the pin 115 with an oblique surface at the upper side of the spring block 1%. This camming action on the pin 11?) winds up the spring 11 l-2 and brings the parts back to the full line position of Fig. 8. At the time the parts reach this position the beveled end of the trip rod L13 is released from the spring block 116 and this block then kicks the pin 1-15 and forces the lug 1 10 outwardly beyond the end of the latch 138. This permits the latch lock 138 to drop by gravity past the lug 1'10 and the parts finally to reassume their original position as shown in Fig. 5.

From the foregoing description it will be seen that the single lasting movement which has occurred between the time of the depre. sion of the slow speed treadle 73 and the disconnection of the high speed clutch members 6365 has been at two speeds. The slow speed driving mechanism has been operative during the updraw movement of the pincers and the high speed mechanism has been operative for the remainder of the last ing movement which includes the tacking of the upper in place. For the remainder of the lasting operations around the shoe, except for the single lasting movement at the opposite side of the shank, or waist, it is possible, and desirable, to utilize the high speed driving mechanism alone. In order that this mechanism may be used, without first throwing in the slow speed mechanism, the collar 127 on the rod 128 is provided with a shelf 1 17 which, when the machine is at rest, engages the lower side ofthe shelf 136 as shown in Figs. 1 and When it is desired to operate the machine through the high speed mechanism alone, it is merely necessary to depress the high speed treadle ($9 which will elevate the wedge 67, connect the high speed clutch and, through the engagement of the shelf 1 17 with the under side of the shelf 136, raise the rod 77 so as to remove the brake shoe 87 from its braking surface and also raise the roll 96 so that on rotation of the pulley 56 it will be caught and held in its r; ised position by the cam track 97. So long as the operative maintains the treadle 59 depressed, the machine will run at its high speed, but as soon as he removes his foot from the treadle the machine will again stop when the roll 96 reaches the depression 98.

The purpose of the toggle '71-7 2 in the connection between the high speed treadle (39 and the wedge 67 will now be explained. The link 72 of-this toggle is provided with a lug 1 18 (Fig. 2) which is adapted to be engaged at its under side by a second lug 1 19 formed on the rod 7 a which is connected to the slow speed treadle 7 3. When the slow speed treadle 7 3 is depressed, to run the machine initially at slow speed, the upward movement of the lug 1 19 moves the lug 1&8 in a direction to break the toggle 71-72 and render the high speed driving mechanism unresponsive to a depression of the high speed treadle 69. This is a safety device similar to the toggle 130131 which prevents the operative from throwing both driving mechanisms into operation at the same time. The toggle arm 71 is also provided with a lug 150 (Fig. 2) the lower side of which is adapted to be engaged by the inner end of a toggle resetting treadle 151. The purpose of this treadle 151 is to straighten the toggle 7172, if necessary, prior to the depression of the treadle 69 for driving the machine by the high speed alone.

In operating upon some styles of shoes, it is desirable to run the machine at a slow speed during several lasting movements instead of limiting the time of operation of the slow speed to the operation of a single lasting movement only as in the case when the mechanism is connected as illustrated in the drawings. in order to provide for such an operation of the machine it is merely necessary that a simple adjustment be made, that is, a disconnection of the operative connection between the slow and high speed trains of driving mechanisms so thateither one may be used without the other and solely under control of their respective starting treadles. Provision is made for such disconnection of these two driving mechanisms by making the two arms of the bell crank lever 120122 of two separate parts and securing the hub of each part to the pin 121 by means of a set screw as shown in Figs. 1 and 4. When it is desired to disconnect the two driving mechanisms the set screw securing the arm 120 to the pin 121 is loosened so that the movement of this arm, caused by the reciprocation of the link 117, is idle, and, therefore, fails to impart movement to the arm 122. The arm 122 is, therefore, never removed from its position shown in Fig. 4, and, consequently, the Horton clutch 117 never becomes operative. It will be obvious that with the lever arm 122 disconnected from the pin 121, so long as the treadle 7 3 is held depressed maintaining the pin 99 in its dotted line position, Fig. 4, the machine will continue to run at the slow speed, because, as the toggle 130131 is not broken the pressure on the rod 75 prevents the roll 96 from descending into the depression 98 in the cam track 97 to apply the brake, and the reciprocation of the wedge block 100 under the influence of its spring 102 and the tappet cam 103 is ineffective. lVhenever the treadle 73 is released the machine will stop as soon as the wedge block 100 is removed from above the pin 99 by the tappet cam 103, the momentum of the pulley 56 not being sufficient, when driven at the slow speed, to overcome the inertia of the parts and the resistance due to the setting of the driver spring. After the cessation, at the will of the operator, of the slow speed drive, the high speed treadle 69 is depressed and the lasting of the shoe continued at the high speed.

If it is found that under some factory conditions the machine does not stop immediately, without the aid of the brake, when the slow speed clutch is disconnected, the brake may be utilized by means of a further simple adjustment as follows. By loosening the bolt which secures the collar 137 (Fig. 1) to the rod 77 this rod may be turned within the collar. By turning the rod 77 in a clockwise direction through 90, the ears 92 are removed from engagement with the pin 93. This rotary movement of the rod 77 does not, however, disengage the pin 90 from the groove formed by the ears 91, as these cars are so proportioned (see Fig. 1) as to retain their engagement of the pin 90 when the rod 77 is so rotated. After rotating the rod 77, as described, the collar 137 is again clamped thereon and, thereafter, whenever the slow, or the high, speed treadle is released the brake shoe 87 will immediately engage its braking surface, for the reason that such brake shoe is re moved from its former control by the cam track 97. It is, also, considered desirable by some operatives to run the machine for one, or a portion of one lasting movement only, at the slow speed and then connect the high speed by means under control of the operative, that is, omitting the automatic change of speed by means of the cam 116 (Figs. 1 and 4t) and the mechanism operated thereby. A simple adjustment, only, is necessary to cause the machine to operate in this manner. As shown best in Fig. 4, and as here tofore described, the hubs of the levers 124k and 1124c are secured to the rock shaft 125 by set screws. By loosening the set screw for the lever 1121 any movement of the lever 12% will fail to raise the push rod 128 and connect the high speed clutch 6365. Now when the tappet cam 103 releases the pin 99 by moving the wedge block 100 from above it and at the same time causes the cam 116 to rotate, the slow speed clutch will be disconnected and at the same time the toggle 130- 131 will be broken. This will cause the treadle 73 to drop under the continued pressure of the foot of the operative. This movement of the treadle 73 acts as a signal to indicate to the operative that the slow speed clutch has been disconnected and he at once slips his foot over on to the high speed treadle 69, and toggle resetting treadle 151, by a depression of which the high speed clutch is connected and the machine continues at the high speed as long as the treadle 69 is retained in its depressed position. A spring 1123 (Figs. 1 and 4), connecting the lever 12st with a lug on the frame holds the roll 123 in contact with the cam 116, and in the preferred manner of operating the machine this spring supplements the action of the brake shoe spring 89 in causing a downward movement of the lever 1124: to move the roll 123 upward and reset the toggle 130-431.

As the operation of the machine has already been fully described in connection with the detailed description of its various features it is believed necessarv only to add that the combined slow updraw movement of the pincers and downward movement of the hold down affords an exceedingly effective action on the upper at the shank, closely simulating the nature of this pull when given by hand and that this slow movement is continued only so long as is necessary and desirable.

Nothing herein contained is to be interpreted as limiting this invention in the scope of its application to use in connection with the particular machine or any particular mode of operation, or both, selected for purposes of illustration and explanation, or to the conjoint use of all its features. While the particulars of construction herein set forth are well suited to one mechanical form of the invention, it is not to be understood that these particulars are essential since they may be variously modified within the skill of the artisan without departing from the true scope of the actual. invention as defined in the following claims.

lVhat is claimed as new, is:-

1. A lasting machine, having, in combination, pincers, operating mechanism therefor, a hold down below the pincers to position the shoe for the operation of the pincers and prevent its being raised when operated on by the pincers, means for actuating the pincer operating mechanism, and mechanism independent of said means for raising the hold down, whereby the operative position of the hold down may be altered prior to the actuation of the pincers.

2. A lasting machine, having, in combination, pincers, operating mechanism therefor, a hold down below the pincers to position the shoe for the operation of the pincers, means for actuating the pincer operating mechanism, and mechanism independent of said means for imparting a combined upward and outward movement to the hold down relatively to the pincers, whereby the operative position of the hold down may be altered prior to the actuation of the pincers.

8. A lasting machine, having, in combination, pincers, operating mechanism therefor, a hold down below the pincers to position the shoe for the operation of the pincers, means for actuating the pincer operating mechanism a train of mechanism constructed and arranged to raise the hold down prior to the operation of said means for actuating the pincers, and means to lower said hold down from its raised position during the operation of the pincers.

4:. A lasting machine, having, in combination, pincers, operating mechanism therefor, a hold down below the pincers to position the shoe for the operation of the pincers, means for actuating the pincer operating mechanism, independent mechanism con- ;structed and arranged to raise the hold down and change its operative position prior to the operation of the pincers, and a cam for engaging said independent mechanism and reversing its operation to lower said hold down from its raised position during the operation of the pincers.

5. A lasting machine, having, in combination, pincers, a hold down to prevent the shoe being raised when operated on by the pincers, a spring for raising the hold down to place it in a different operative position relatively to pincers, and a cam for thereafter lowering the hold down from its raised position.

6. A lasting machine, having, in combination, pincers, a hold down to prevent the shoe being raised when operated on by the pincers, a spring for raising the hold down relatively to the pincers, means under control of the operative for causing said spring to operate, and automatic means for lowering the hold down from its raised position.

7. A lasting machine, having, in combination, pincers, a cam, a hold down, mechanism for moving said hold down relatively to the pincers including a cam roll normally disengaged from but adapted to be engaged by said cam, and means under control of the operative for operating said mechanism to move said hold down in one direction and place said cam roll in operative engagement with said cam, whereby the hold down is automatically moved in an opposite direction.

8. A lasting machine, having, in combination, pincers, a movable hold down, means for maintaining said hold down in one position relative to the pincers including a spring under compression, and means under control of the operative for releasing said spring thereby to move the hold down to another position relative to the pincers.

9. A lasting machine, having, in combination, pincers, a movable hold down, means for maintaining said hold down in one position relative to the pincers including a spring under compression, means under control of the operative for releasing said spring thereby to move the hold down to another position relative to the pincers, and a cam for returning said hold down to its original position and again compressing said' spring.

10. A lasting machine, having, in combination, pincers, operating means therefor, a hold down, a vertically movable slide on which said hold down is mounted, a spring for raising said slide, means under control of the operative for causing said spring to become operative, and a cam controlled by the pincer operating means for lowering said slide.

11. A lasting machine, having, in combination, pincers, means for imparting normally a quick lasting movement thereto, a hold down below the pincers to position the shoe, mounted for movement toward and from the pincers, mechanism for imparting a relatively slow lasting movement to the pincers, and mechanism for moving said hold down, in one direction by the operation of the mechanism for imparting the slow lasting movement to the pincers and in the other direction by means unconnected with the pincer operating mechanism.

12. A lasting machine, having, in combination, pincers, means for imparting normally a quick lasting movement thereto, a hold down below the pincers to position the shoe, mounted for movement toward and from the pincers, mechanism for imparting a relatively slow lasting movement of the pincers, an actuating treadle for such mechanism, means independent of the slow speed mechanism for moving the hold down in one direction, and means controlled by the actuation of said treadle for moving the hold down in an opposite direction.

13. A lasting machine, having, in combination, pincers, a train of mechanism for operating the pincers at a high speed, a second train of mechanism for operating the pincers at a. slow speed, and a separate actuating treadle and clutch for operating each of said trains whereby the two different speeds of operation may be used alternatively.

14. A lasting machine, having, in combination, pincers, a train of mechanism for operating the pincers at a high speed, a second train of mechanism for operating the pincers at a slow speed, a separate actuating treadle and clutch for operating each of said trains whereby the two different speeds of operation may be used alternatively, and means for automatically disconnecting the slow speed clutch, after its connection by actuation of the slow speed train treadle, at a predetermined point in the cycle of operation.

15. A lasting machine, having, in combination, pincers, a train of mechanism for operating the pincers at a high speed, a second train of mechanism for operating the pincers at a slow speed, a separate actuating treadle and clutch for operating each of said trains whereby the two different speeds of operation may be used alternatively, and means for automatically disconnecting the slow speed. clutch, after its connection by actuation of the slow speed train treadle, and for simultaneously rendering the slow speed actuating treadle unresponsive to continued pressure thereon.

16. A lasting machine, having, in combination, pincers, a train of mechanism for operating the pincers at a high speed, a second train of mechanism for operating the pincers at a slow speed, a separate actuating treadle and clutch for operating each of said trains, whereby the two different speeds of operation may be used alternatively, and operative connections between the two trains for rendering the high speed actuating treadle powerless to actuate its train while the slow speed mechanism is in operation.

17. A lasting machine, having, in combination, pincers, a train of mechanism for operating the pincers at a high speed, a second train of mechanism for operating the pincers at a slow speed, a separate clutch for said train, an actuating treadle for the slow speed train, and means for automatically disconnecting the slow speed clutch and connecting the high speed clutch at a predetermined point in the cycle of operation.

18. A lasting machine, having, in combination, pincers, pincer operating mechanism, a slow speed drive and a high speed drive for said pincer operating mechanism, means controlled by the operative for connecting said pincer operating mechanism to the slow speed drive, and means controlled by the machine for thereafter disconnecting the slow speed drive and connecting the high speed drive after a predetermined period of operation at the slow speed and then stopping the machine on the completion of a single cycle of operations.

19. A lasting machine, having, in combination, pincers, pincer operating mechanism, a slow speed drive and a high speed drive for said pincer operating mechanism, means controlled by the operative for connecting said pincer operating mechanism to the slow speed drive, means controlled by the ma chine for thereafter disconnecting the slow speed drive and connecting the high speed drive after a predetermined period of operation at the slow speed, and a locking mechanism located in the high speed drive for locking said drive against disconnection, said locking mechanism automatically becoming operative when the slow speed drive is disconnected.

20. A lasting machine, having, in combination, pincers, pincer operating mechanism, two separate and independent slow speed and high speed drives for said pincer operating mechanism, means controlled by the operative for connecting said pincer operating mechanism to the slow speed drive, means controlled by the machine for thereafter disconnecting the slow speed drive and connecting the high speed drive, and means for connecting the high speed drive to the pincer operating mechanism independently of the slow speed drive.

21. A lasting machine, having, in combination, pincers, a train of mechanism for operating the pincers at a high speed, a second train of mechanism for operating the pincers at a slow speed, a separate actuating treadle and clutch for operating each of said trains whereby the two different speeds of operation may be used alternatively, and means for rendering one of said trains of mechanism unresponsive to its actuating treadle when the other train is in operation.

22. A lasting machine, having, in combination, pincers, a train of mechanism for operating the pincers at a high speed, a second train of mechanism for operating the pincers at a slow speed, a separate actuating treadle and clutch for operating each of said trains whereby the two different speeds of operation may be used alternatively, means for rendering one of said trains of mechanism unresponsive to its actuating treadle when the other train is in operation, and a device for overcoming the effect of said means.

23. A lasting machine, having, in combi nation, pincers, a train of mechanism for operating the pincers at a high speed, a second train of mechanism for operating the pincers at a slow speed, a separate actuating treadle and clutch for operating each of said trains whereby the two different speeds of operation may be used alternatively, a toggle in the high speed train, and a device in the slow speed train for breaking the toggle when the slow speed treadle is actuated to render the high speed train unresponsive to its treadle.

2a. A lasting machine, having, in combination, pincers, a train of mechanism for operating the pincers at a high speed, a second train of mechanism for operating the pincers at a slow speed, a separate actuating treadle and clutch for operating each of said trains whereby the two diiierent speeds of operation may be used alternatively, a toggle in the high speed train, a device in the slow speed train for breaking the toggle when the slow speed treadle is actuated to render the high speed train unresponsive to its treadle, 'and a device operable to straighten the toggle and render the high speed train again responsive to its treadle.

25. A lasting machine, having, in combination, pincers, a train of mechanism for operating the pincers at a high speed, a sec ond train of mechanism for operating the pincers at a slow speed, a separate actuating treadle and clutch for operating each of said trains whereby the two different speeds of operation may be used alternatively, a toggle in the high speed train, a device in the slow speed train for breaking the toggle when the slow speed treadle is actuated to render the high speed train unresponsive to its treadle, and a toggle resetting device under control of the operative.

26. A lasting machine, having, in combi nation, pincers, a train of mechanism for operating the pincers at a high speed, a second train of mechanism for operating the pincers at a slow speed, a separate actuating treadle and clutch for operating each of said trains whereby the two diiierent speeds of operation may be used alternatively, means for automatically disconnecting the slow speed clutch, after its connection by actuation of the slow speed train treadle, a toggle in the slow speed train, and means operated by said disconnecting means for breaking the toggle to render the slow speed train unresponsive to its treadle.

ERASTUS E. lVINKLEY.

Witnesses:

axman G. OGDEN, ELsIE Pnnss.

topics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

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