US1599868A - Pressing machine - Google Patents

Description

' Sept. 14,1926.

" J. M. BARTON ET AL PRESSING MACKINE Filed August 1924 4 Shasta-Shoot 1 Sept. 14, 1926.

. 1,599,868, J. M. BARTON ET AL PRfissING. MACHINE Filed August 22, 1924 4 Shoots-Sheet 2 252291221719: Z I 2W Sept. 14,1926; 1, 8

J. M. BARTON ET AL PRES SING MACHINE .Filed August 192 Patented Sept. 14, 1926.

UNITED STATES 1,599,868 "PATIENT OFFlCE.

I JOSEPH M. BARTON AND ROSCUE D. PQOLE,'OF DA1IJVERS, MASSACHUSETTS.

PRESSING IVIACHINE.

Application 'filed August 22, 1924.

Our invention relates to pressing machines and particularly to pressing machines for use in assembling the parts of when the toe portion of the leather facing is a separate piece fastened to the body portion thereof as is usually the case, the same stitches which fasten the toe cap portion to the body portion are utilized to also se cure the backing to said leather facing. The impregnated box piece is then placed in po sition between the leather facing and the fabric backing, immediately forward of these stitches, after which the practice here- 'tofore followed has been to simultaneously subject the toe portion of the vamp to heat and pressure, the vamp being placedupon a table and a heated roll passed back and forth over it. As a result of this treatment the adhesive of the box would be softened or melted and forced into the meshes or interstices of the fabric. backing as wellas united with the inner fibrous flesh side of the leather facing, thus making a unitary structure of the-three layers of the toe ofthe vamp. The adhesive employed is ordinarily a thermoplastic rubber compound which is vulcanized when thus subjected vto heat. A serious objection to the above method was that this application of a single roll to the vamp while the latterwas supported upon a stationary table as described, acted to dish ;or curve the toe portion of the vamp, where.

as it is desirable thatsaid portion be perfectly flat. Furthermore, since the roll employed with said method was heated, the

adhesive of the box would remain soft throughout the rolling operation and consequently the action of roll upon the toe por-- tion of the vamp tended to displace the several layers thereof.

Our invention has for its object to provide an improved vamp pressing machine and especiallly to obviate the above noted objectionable feature characterizing the methods and means heretofore employed in Serial No. 733,531.

assembling the parts of ViLIDPS of the character described, and to this end we have provided an improved vamp pressing machine having the peculiar features of construction and mode of operation set forth in the following description, the novel feal tures of the invention being particularly pointed out and defined in the claims at "the close thereof- In the accompanying drawings:

Figure 1 is a plan view of a vamp pressing machine constructed in accordance with our invention.

Figure 2 is a side elevation of the machine shown in Fig. 1. p

Figure 3 is a rear elevation of the machine shown in Fig. 1.

Figure 4 is a section on line 4+4 of Fig. 1. I

Figure 5 is a detail hereinafter described.

Figure 6 is a plan view partly broken away, of a box toe vamp.

Figure 7 is a plan view of the box hereinafter referred to.

Figure 8 is a-section on line 88 of Fig. 6. Figure 9 is a more or less diagrammatic view hereinafter described.

Our improved vamp pressing machine comprises a base 1 adapted to be secured to a bench or othersuitable support and to the top side of this base are secured two uprights 2 and '3 made with vertical ways in which are mounted journal boxes 4 and 5. These journal boxes are supported by springs 6 seated upon followers 7 which, in turn, are supported with provision for .vertical adjustment by wedges 8, the latter being slidably mounted in the uprights Qand 3 and held in adjusted positions byscrews 9. The springs Gyieldingly hold the journal boxes 4: and 5 elevated againststops 10 and 11. respectively the stop 10 being, as shown in Fig. 4, a cross-bar secured to and extending from one side of standard 2"to the opposite side thereof,.while the stops 11 are small plates secured to the opposite sides of the standard 8.

The boxes 4 and 5 support theshaft 12 of a lower presser roll 13 and at one end thereof this shaft has fast on it a. pinion .14 in mesh with a rack-bar15 slidably mounted in ways provided in a bracket 16 securedto the standard 2, said rack bar ,and 113s ways be ng disposed cross-wise of the axis of roll 13.

To the rack-bar 15 is pivotally conneeted one end of a pitman 17 whose opposite end is connected by a wrist pin 18 with a disk 19 fast on one end of a short shaft 20 that is journaled in a bearing bracket 21 secured to the base 1. The wrist pin 18 extends through a slot 22, Fig. 3, provided in disk 1.9 and is secured therein with provision for radial adjustment by a nut 23. As will be clear, rotation of disk 19 acts through wrist pin 18, pitman 17 and rack bar 15 to oscillate pinion 14: and presser roll 13, and it will also be clear that the extent of angular movement of the presser roll 13 can be varied by adjusting the wrist pin 18 radially. The rear end of shaft 20 is connected by miter gears 2d with one end of another short shaft 25 journaled in bearings provided upon upstanding brackets 26 and 27 secured to the top side of base 1. The opposite end of shaft 25 has secured to it a clutchmember 28 comprising a dog 29 slidable lengthwise of the axis of shaft 25 toward and from the adjacent face of another clutch member 30 herein shown as a continuously driven pulley loosely mounted upon the shaft 25 and provided upon said face with teeth 31 to co-operate with the inner end of the dog 29. The outer end of the dog 29 is pivotally connected with one end of a lever 32 fulcrumed at 33 within a transverse slot provided in the outer end or face of member 28. The opposite end of lever 32 is formed with a cam face or surface 34 co-operating with the upper end of a bolt 35 slidably mounted in a bearing 36 provided on base 1. A spring 37 yieldingly supports the bolt with its upper end in the path of the cam shaped end of lever 32, stop nuts 38 adjust-ably mounted on the threaded stem of bolt 35 serving to limit the upward movement of the same under the influence of spring 37. Then bolt 35 is manually pulled down from its normal position the cam shaped end of lever 32 is freed and a spring 39 pocketed within member 28 shifts the lever 32 in a direction to carry the inner end of dog 29 into the path of the teeth 31 of pulley 30 so that it is engaged by one of the I latter thereby causing the member 23 to retate with the pulley. Rotary motion is then transmitted to the disk 19 from pulley 30 through member 28, shaft 25, gears 2i and shaft 20 and this rotary motion of disk 19 acts through the pitman 17, rack 15, pinion l land shaft 12 to oscillate the presser roll 13. The top'portion of the presser roll 13 is disposed within a slot 40 formed through a work supporting table 41 that is supported by, and fastened by screws to, the journal boxes 4: and 5 with its top side about flush with the top of roll 13.

Immediately above and cooperating with the presser roll 13 is another roll 42 whose shaft 43 is supported by journal boxes id and-45 andheld against endwise movement relativelythereto by a shoulder 46 and collar l7 provided on said shaft. Fast on this shaft d3 is a pinion 48 that is always in mesh with the teeth of pinion 1% by which it is driven, the two pinions having the same pitch diameter and the two rolls 13 and 42 being of the same diameter. Thus the surface speeds of the two rolls 13 and 1-2 are the same when they are in motion. The box is provided at opposite sides thereof with trunnions 49 mounted in bearings provided upon bracket so that roll 42 and its shaft i3 can be swung on these trunnions toward and from the lower roll 13.

To the journal box is secured the lower end of a rod 50 which extends upuuirdly from said journal box through an opening or hole provided in a cross-bar 51 secured at its ends to the top of standard 2. Seated upon this cross-bar, and surrounding the rod 50, is a spring 52 whose upper end engages a washer 53 that is seated against a nut 5st udjustably mounted upon the upper threaded end of the rod 50. Thus the spring 52 acts through the washer 53, nut

5%, rod 50 and box l5 to support the upper roll 42 in an elevated inoperative position at the limit of its movement away from the lower roll 13. The intermediate portion of a lever 55 occupies a position between the journal box and the cross-bur 51 and serves as a stop to limit the upward movement of roll d2 under the influence of'spring 52. This lever is fulcrumed at 56 on the upright 2, being arranged within slots 5? formed in the latter and having its free end extending beyond the uprigl'it and connected by a wire or cable 58 with one end of a single-tree or lever 59, Fig. 9, whose opposite end is connected by a wire or cable 69 with the lower end of bolt intermediate its ends the single-tree or lever 59 is connected by a wire or cable '31 with a foot treadle 62 that is fulcrumed at (53 to any suitable fixture. The point of connection of the wire or cable 61 with the single-tree 59 is nearer the end of the latter with which the wire 58 connects than it is the opposite end, which, together with the leverage exerted by the lever 55, renders the elfective force of sprin 52 opposing downward movement of treadle 62, less than that of the spring 37. As a result, when the treadle is depressed both springs oppose its downward movement but the spring 52 alone yields first until the accompany" downward movement of lever 55 is arrested,

whereupon continued downward movement of the treadle overcomes the greater resistance of spring 37 and withdraws the bolt 35 from engagement with the end of lever 32. It will therefore be clear that when the treadle is depressed the roll 42 is first lowered into co-operative relationship with lower roll '13, after which the bolt 35 is lowered thereby connecting the disk 19 with anemone the continuously rotating driving ipulley 80. The downward unovementof the dipper roll 42 is limited by theengagement of the box #15 with Lthecross-bar 10., Figs. 2 and :4, heretofore referred to. Sollong as .the treadle 62 is helddepressed tothe lim'itiof its downward movement the rack-.bar 15 will continue to reciprocate and :the two rolls 13 and d2 will continue to oscillate.

Fastened to one side of the upright 2.adjacentth'e free end of thelever 55 is a yoke list which provides a guide slot for the free end of an upright lever 65 whose lowervend is fulcruined at 66on the frame of the machine and whose upper end is' connected by a link 67 with a latch 68, pivoted on the upright 2 and also connected by a spring 69 with said upright. Normally the nose of this latch 68 is held by spring 69 against the side of lever 55, but when the treadle 62 is depressed and lever 55 is swung downwardly the latch is thrown by spring 69 into position to lock the lever 55 in its lower position. The disk 19 carries upon one side thereof a cam 70 c o o aeratin wit-n lever 65 so thatwhen lever 55 is in its lowermost position and lever 65 is held shifted toward the right, Fig. 2, the cam 70 engages lever (35 onceduring each revolution of disk 19 and swings it rearwardly (toward the left) far enough to withdraw the latch 68 from engagement with lever .55, said latch being immediately restored to locking position again by spring (39 so long as the operator maintains the treadle 62 depressed. When, however, the treadle 62 is released by the operator, the bolt 35 will be elevated by its spring 37 into positioirto be engaged by lever 34 thereby disconnecting the shaft 25' from the continuously driven pulley 30 and as soon thereafter as cam 7 O engages lever (55 and withdraws the latch 68, the spring 52 will lift upper roll 42 and lever 55 to their normal elevated inoperative positions as the machine comes to rest.

'As shown in Figs. 6, 7 and 8 an ordinary box toe vamp comprises an outer leather facing made up of a body 71 and toe por-.

tion or cap 72, a box 73 and a fabric backing 7 1 that is of the same size and shape as the outer leather facing including body 71 and toe cap 72. Before the box 73 is incorporated in the vamp the leather facing and fabric backing are fastened together by transverse lines of stitches 75 which also secure the overlapped portions of the body 71 and toe cap 72 together. The box 73 is made as usual from a toe-shaped piece of fibrous sheet material impregnated througlr out with a normally dry thermo-plastic waterproof adhesive, which may be a rubber compound, and which softens or melts un der the application of heat. In proceeding in accordance with our invention this box is first heated sufliciently to soften or melt its accommodate themselves to the thickness of the vamp, while the oscillatory movements of the. two rolls carries the toe portion of the vamp back and forth between them. The wrist pin 18 is set in a position to cause the rolls 13' andt2 to traverse practically the full length, fore and aft, of the box. A bail-shaped member al having its ends secured to the upright 2, is provided adjacent the two presser rolls and serves as a guard to prevent injury of the hands of the operator by the rolls and also assists in holdin the work flatwise on the table 41.

It will thus be seen that the use of our improved machine involves the practice of a new method of procedurethe distinguishing feature of which is that the assembled parts of the vamp including a previously heated box are forced together into intimate relationship while the adhesive of the box cools and sets. By this new method a great increase in output is secured over the old method which involved the simultaneous application of heat and pressure.

What we claim is 1. A machine for use in assembling the parts of Vamps comprising a work support ing table provided with a slot; a lower presser roll occupying said slot with the top of said work supporting table approximately tangential with respect to the periphery of said roll; means for yieldingly supporting said lower roll and work supporting table; an upper presser roll that is bodily movable toward and from the lower roll; a pinion connected with one of said rolls; a rack engaging said pinion; a main shaft; means through which said shaft reciprocates said rack; a continuously driven clutch member; a second clutch member connected with said shaft and adjustable so as to be engaged with or disengaged from said con tinuously driven clutch member; a single manually operated control member, and

'means through which said control member acts to operate the adjustable clutch member and to move said upper roll toward the lower roll when moved in one direction.

' 2. A machine for use in assembling the parts of Vamps comprising a pair of presser rolls one of which is bodily movable toward and from the other; a spring for normally holding said bodily movable roll away from the other roll; a manually controlled memher that is operable to shift said bodily movable roll into co-operative' position with relation to the other roll, and means for automatically locking the bodily movable roll in theposition to which it is shifted by said member.

3. A machine for use in assembling the parts of vamps compiising a pair of presser rolls one of which is bodily movable toward and from the other; a spring for normally holding said moi-able roll away from the other roll; a manually controlled member that is operable to shift said movable roll toward th other roll; means for automatically loclzi said movable roll in position to which it shift-ed by said member; means iior o cillati g said rolls while said movable roll is loci: and means operatingautomatically to unlock said roll to permit said spring to return the same to its normal position aIter said rolls have been oscillated.

l. A machine 01 the character described COB'lPllSiDQ' a pair of presser rolls one of which is bodily movable toward and from the other; a spring for normally holding said movable roll away from the other roll; a manually controlled memberthat is operable to shift said movable roll toward the other roll; means for automatically locking said movable roll in the position to which it is shifted by said men'iber; means for turning said rolls while said movable roll is locked in the position to which it is shifted by said member and while a vamp is in position between the two rolls, and means for unlocking said movable roll after the vamp has been pressed.

5. A machine of the character described comprising a pair of presser rolls one of which is bodily movable toward and from the other; a spring for normally holding said movable roll away from the other roll; a manually controlled member that is operable to shift said movable roll toward the other roll; means for locking said movable roll in the position to which it is shifted by said member, and means for oscillating said rolls while said movable roll is locked in the position to which it is shifted by said member and while a vamp is in position between the two rolls.

(5. A machine of the character described constructed in accordance with claim 5 wherein the first mentioned roll is bodily movable on a pivot opposite one end thereof.

7. A machine of the character described constructed in accordance with claim 5 and including also automatic means under the control oi? the operator for unlocking said movable roll after the vamp has been pressed.

8. In a machine of the character described having a pair of presser rolls and operating, mechanism therefor, the combination with the lower presser roll; its shaft; journal boxes for said shaft; springs upon which said boxes are seated, and adjustable members upon which said springs are seated, ot a vorlr table supported by said box-es in a fixed position withrelation to said lower presser roll and so that it supports the work while the latter is being operated upon by said rolls.

JOSEPH M. BARTON. ROSCOE D. POOLE.

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