US865936A - Lasting-machine. - Google Patents

Description

No. 865,936. I PATENTED SEPT. 10, 1907.

' 0. F. PYM.'

L ASTING MACHINE. APPLICATION-FILED MAY 25, 1903. y

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WTWEssEs I ZWVEWTOB missmsa. v .PATENTED SEPT. 10, 1907.

' G.F.PYM.

LASTING MACHINE.

APPLICATION FILED MAY 25, 1903.

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ii-NEED STATES PTENT onion.

CHARLES F; PYM, or ESSEX, ONTARIO, CANADA, ASSIGNOR OF ONE-HALF TO KRENTLER; BROTHERS COMPANYXOFDETROIT, MICHIGAN.

E LAS TING-MACHINE.

To all whom it may concern:

Be it known that I, CnAnLns F. PYM, a subject of the King of Great Britain, 'residing at Essex, county of Essex, Province of Ontario, Canada. have invented a certain new and useful Improvement in Lasting-Machines, and declare the following to be a full, clear and exact description of the same, such as will enable others skilled in the art to which it pertainato make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to a shoe or boot lasting machine, and has for its object an improved machinethat is used to properly pull and fold the edge of the uppefi over the sole at the time that the shoe is, lasted. Y K

In accordance with my invention, I provide a slow stretching movement in connection with a rapid wiping and crimping movement, anddrive the tackbeiore the pincers let go of the upper.- The pincers get a lowhold on the upperfthen travel straight up. then over forward and down, the tack being driven at the extreme end of the pulling movement before the leather is released. This action taken together with the yielding of the pincers makes it practically impossible to tear the leather. The leather is pulled, and worked forward by the incessant wiping action of the smoothing devices and at the same time is gently hammered along the side of the last; so that after the pincers have taken hold of i the leather and while they are slowly stretching the leather into place, the leather is being thereby caused to stretch uniformly andq'uickly, and just as it is fully stretched the tackis driven:

In the drawings :'Figure 1, is a side elevation of the entire machine, showing both the lasting part and the nailing part. Fig. 2, is a detail of the creasing and smoothing-finger. ig. 3, is a perspective of the finger. Fig. 4, is a side elevation showing in detail an automatic pince'rs used to pull the leather. Fig. 5, isa plan view partly in section of the pincers shown in Fig. 6. Fig. 6, is a perspective of the pincers. Fig. 7, is a crosssection near the front end of the arm 22. Figs...8'12

are views similar to Fig. 4, showing the parts in the .va-

. for clearness of illustration. 4 i

A indicates a pedestal which parts of the machine I 2 indicates the main. driving wheel supported on a pillar 3, and having on its shaft an eccentric 4, which actuates a reciprocating pitman 5, and the reciprocating pitinan 5, carries at its forward end the jaws oi a pair of supports the working 'pincers which will be more fully hereinafter described.

On the shaft of the wheel 2, is a spur gear that meshes with the smaller spur gear (i whose shaft carries a sec Specification (if-Letter? Patent. Application filed May 25,1903. Serial No. 158,650.

r 161, supported on bracket arm 17".

' The fork at the hon Patented Sept. 10, 1907.

: -ond eccentric 7 that actuates a reciprocating. pitman 8;

and the reciprocat ing pitman 8 carries at its forward end the finger 9 shown indetailin Figs. 2' and 3: The pitman 8 is supported intermediate its ends by m'eans which allow reciprocation, but limit other inbtiori; as by a hanger 10 pivoted to a fixed part of the machine andpivoted to the pitman. At its forward end there is 'piv' oted to the pitmana finger. 9 by pin 11 ,Zand this finger 9 is adjustably limited inits oscillation!(rrr'the' pin 11,

by a screw 12, that is inserted verticallythrough a part of tlie pitman 8, which overhangs the'finger or a part 7 finger 9. The rear end of the finger 9 is pressed by a 'f leaf spring 14', that ,is secured to. thepitmanBL' The.

finger 9 has a reciprocating motion in-connectiouwith the reciprocation of the pitman 8 and it is capable of a slight oscillatory motionon :the'pin 111 The forward end of the finger is forked'and the fork straddles a jaw of the pincerspand the nail spout -15 of the nailer hangs immediately in front of the openings. Underneath the finger is an adjustable", but otherwise stationary rest Underneath the forked'part of the finger and in the main partof the finger, are inserted two short plungers,

91 and 92; the lower of these plungers is-pressed forward by a spring 93 which is adjustable as 'tensiong'g -by a pressurelscrew 94; the upper plunger 91, is retained by a screw95; this plunger-has pivoted to its iorwardend a hanger 96 that bears against the side of the shoe'u'nder treatment; the hanger 96 has the co npound action resulting from the reciprocation'of the arm 8, the oscil-. lation of the finger on the pin 11' and the sliding and swinging motion of the hanger time to the motions of the plungers 91 and .92 and because ofthisrapid motion and the fact that it rnovesperpendicularly'against the-side of the last, it pounds and hammers} the leather'with a A series of blows', followin g eachblow with a rapid, sliding movement over the leather, as the smoothing finger continues forward."

end of the finger straddles what I will term the fixed jaw 16. of the pincers; this 1 t jaw, 16 of the pincersiis fixed to the slide; 22, which reciprocates with respect to the arm 20; the arm 20 itself swings from a pivot 18 that holds it to the body of the machine; The arm 20in connected by a pin 19.-

to the pitman- 5, the latter being guided in a rectilinear motion by a fixed guide 50. The arm 20 is given a pe- 100 culiar swinging movement by a slot 21 through which a the pin 19 paseasaid arm carrying at its free end aslide slot 28 flirongh which th pizi 2 3'passee is larger than the pin, there being. clearance between the pin and the'walls of the slot. The forward and rearward ends of the slotJ21 are higher than the middle, theslant of' the rear part of said slot being more abrupt, than the slant ofthe front part The slide: 22 is reciprocated by the pitman 5'and swings with the arm 20, but asthe motion of the arm is itself produced by the arm 5, and is not a regular swinging motion, because of the irregular shape of the slot 21, in which the pin 19 engages, the motion'of'the slide is compound to a considerable degree. .The eccentric 4 turns over to the I left and serves: simply to impart the forward and backward movement, and because of the arrangement of the arm 20 and the peculiar shape of the slot 21 and the construction already explained, the pincers are caused to takea low hold of the stock and then travel straight up, then over forward and down upon the last in the same plane with the smoothing finger, the tack being rod 25 that is pivotally connectedto a crank arm 26 on the hub of the jaw. A swinging stop 27 is pivoted to the arm 20 at the rear of the slide 22, and is controlled in its swinging motion by the pin 23, which projects through a slot 28 in the stop, and the stop is alsocontrolled by a spring 29, which constantly strains it downward against the motion which it has in unison with the swinging arm 20, and against a further oscillatorymotion which it has in addition to that of the swinging arm; the further motion is due to the interaction of the pin 23, and the top wall of the irregular slot 28. The rear part of the slot 28, is on alower plane than the forward part, and when the pitman 5 is drawn back, drawing back the pin 23, the pin 23, enters the lower part of the slot 28' and lifts the forward end of the swinging stop 27, at the same time that its normal action due to its connection with the arm 20 has brought it down. Butthis described upward swing of the forward end of the stop 27 swings it clear from the end of the rod 25, and the end ofthe rod slips under, and the spring 30 closes the jaws 1 6 and 24,

tightly together; this takes place at about the close swinging stop 27, the spring 29 .acts to pull .the forward end of the stop down. into the path ofthe rod which is about to return on its back stroke, and the rod in returning,.abuts against the end of the stop and the jaw is forced open and-remains open until the pitman nears the end of its back stroke when it is again closed.

-The fixed jaw 16 works between the prongs 32 and 33 of the forked finger 94 The nail is driven through the nail spout 15 and through a hole 151 in the jaw 163t a time when the z jaw 16-is for an instant at rest between the close of the forward stroke and the beginning of the retreat of the slide, on the return stroke, provision for suchtemporary cessations of the movement of the slide is made by the clearance that is allowed around the pin 23, and between it and the slide; the nailing mechanism is not herein described, as any kind of nail or tack dn'ving mechanism may be used. In action it is of course made to register with the moving parts contained in this lasting machine so that the nail may be driven at the proper instant of time.

' The shoe is held against the rest 161 and against a curved rest 162, that hangs from the hammer guide.

The movement of any particular part of the various structures is highly complex, but the movement of the pincers as a whole maybe considered as orbital in a path determined by the location of the several centers of motion, so also the movement of the smoothing finger may be considered as orbital, in each case the part leaves the last during the latter part of its forward stroke rising therefrom and returns free from contact therewith.

What I claim is:--

1. In a lasting machine, tack-driving mechanism, in combination with pincers and pincer-operating mechanism, and a smoothing finger and its operating mechanism, constructed and arranged to move the pincer-s and smoothlug finger into holding; engagement with the leather and into position to operate on the leather in stretching it down fiat on the bottom of the last and to maintain said engagement while the leather is being tacked, the pincer operating mechanism serving to hold the pincer-s down hard upon the last and leather during the tack driving.

2. In a lasting machine, tack-driving mechanism, in combination with pincers and pincer operating mechanthe smoothing device being located adjacent the plncers,

constructed and arranged to move the smoothing device rapidly a plurality of times adjacent and during one slow movement of the pincer-s, previous to the operation of the tack-driving mechanism to drive a tack.

3. In a lasting machine, tack-driving mechanism, pincers for positively gripping and pulling-over the upper, and operating mechanism causing said pincel's to retain their positive pulling grip upon the upper leather until the tack is driven, combined with auxiliary rubbing means constructed and arranged to reciprocate rapidly a plurality of .times to one pulling movement in smoothing and pressing the leather forward as it is being pulled by the pincers previous to said tacking operation.

4. In a lasting iipachine, tack-driving mechanism, pincore for positively gripping and pulllngover the upper, operating mechanism causing, said pincers to retain their positive pulling grip uy m'fthe upper until the tack is driven, auxiliary means operating just behind said pincers for smoothing and pressing forward the leather as it is being pulled by the pincers, and means for' imparting to said auxiliary means a high speed in rubbing contact with the leatherwhile the pincers are pulling the leatherslowly forward ahead of said smoothing means.

In a lasting machine, pullingover pincers, operating means therefor, a smoothing device, and means operating during the pulling movement of the pincers to cause said smoothing device to engage the leather repeatedly with a pushing movement faster than the pulling'movement. of said pincers. i

6. In a lasting machine, pulllng-over pincer-s for gripping and pulling the upper over the last, means for impart-v cluding a side-pounding device, and operating means'for said mechanism causing the latter toengage the leather rapidly with a sliding, rubbing movenient.

7. In a lasting machine, the comblnatibn of slow-moving topress the leather fiat down upon,

0ver pincers, andfopcrating mechanism constructed and" arranged to move said'pincers upwardly and then for-.

pulling-over pincers, a quick-moving smoothing "device, and a quick-moving side pounding device, all three parts being capable of independently yielding in their engage ment with thenpper, and actuating mechanisms for'said three parts cpnstructed and arranged to permit a plurality erating mechanism constructed and arranged to movc said forwardly and into pressing- Pincers upwardly and then engagement with" the upper-leather and last, said pincers and operating mechanism being constructed and arranged and in contact with, the last from the edgeof the last to th e'pincers. 1 9. In a lasting machine, tack-driving mechanism, pullingwardly and into. pressing engagement with the upperieather and last, said pincers and operating mechanism being constructed and arranged to press the leather fla't down upon the last atthe nailing point, including means for maintaining said pincers closed on the leatheruntil the tackis driven.

10. In aiasting machine, a tack-driver and its operating:

mechanism, combined with pullingover pincers and their operating mechanism, constructed and arranged to move"- said pincers with'a stretching upward-and-forivard move,

ment terminating in a stationary pressing contact against the last and against the shoe upper, constructed to force the shoe upper'in a downward direction against the last at the point receiving the tack, while 7 the tack is beingdriven.

11. In the sm'oothing finger of a lasting mechanism, in combination with a finger adapted to rest over the last, and a hanger .carried by said ,finger, a sliding stem pivotally supporting said banger and extending along the undersideot said finger and its supporting means, and a' sliding abutment behind said hanger.

- 12. In aiiastingmachine, in combination with a smoothsaid pincers being provided with 'i'orked prongs ing finger, means for producing an orbital movement there ,of,-a hanger, a yielding stem for saidhangerfand a yielding abutment behind said hanger:

13. In combination with'a smoothing finger for a lasting machine, a hanger, a yielding stem for said hanger, a yielding abutment behind said hanger, and means whereby the resistance of said abutment may be adjusted.

14..in a lasting machine, .the combination of a reciprocatory arm, a finger pivoted to the end of said arm, a spring retainer limiting the movement of the finger with respect to said arm, an abutment carried by said finger,- but arranged to yield with respect thereto/a pivoted hangezgand a yielding stem for said hanger. 15. .In a lasting machine, the-combination of a reciprocatory arm, and means for actuating the same, a swinging arm pivotaily connected to said arm, a sliding pincer support carried on the swinging arm and means for producing actuation of the pincer support by the recip ro eating arm, a pincer jawfixed to the' slide, a second, pincer jawpivoted to the slide, an actuator for the pivoted pincer jaw, 'a pivoted abutment carried on the. swinging -arm arranged to engage the jaw actuator, and means whereby the pivoted abutment may be swung.

16. In a lasting machine, the combination of a nailing 2: smoothing'finger having a forked end, means .mechanism, for causing thesame to reciprocate horizontally, plncers having a. fixed and a movable jaw, said fixed jaw engaging between the forked ends of said smoothing finger and con taining a nail-passage 'to'guide a nail into position for driving before the material is'rel'eased from engagementbetween the twojaws, and actuating means forsaid pincer-s, including means for actuating one of. the jaws of said pincers and means contemporaneous actuation of both Jaws.

In testimony whereof, I, sign this specification in "the presence of two witnesses. CHARLES F. PYM.

Witnessesa MAY E. Ko'rr, CHARLES F. BURTON.

for thereafter-causing the

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