US1541850A - Lasting and sewing machine - Google Patents

Description

June 16, 1925. y 1,541,850

' F. RlcKs E T A1. l

LASTING AND SEWING MACHINE Filed Dec, l, 1921 2 Sheets-Sheet l 1 y A /Q/ June 1'6, 1925. 1,541,850

' F. RlcKs ET AL.

LAsTmG AND SEWING MACHINE y Filed vec. 1, 1921 2 sheets-sheet 2 I WVM/70H5 UNITE-D ySTATESgPAT-E'NT OFFICE- rnnn aioKsANn rinomato BOYD Wooncooii, or Lmonsfrnn, emanano, assieivoas iro UNITED siren MACHINERY consoli-arios. retranscrit, New annees, `AconronA'rIoN t or NEW JERSEY.

LAS'IVING `lll/LftCHINE.

.Application filed December 1, 1921. Serial No. 513,162.

To all whom t may Concern.:

Be .it known t-hat ive, Flinn Rions and RiieiNnLii iBoirii Woonoooi, subgects of the King oflilngland, lresiding at Leicester,

Leicestershire, England, have invented certain Improvements in Lasting and Sewingl ilflachines, ofwhich the following descrip# tion, in connection with the accompanyingv cants, Fred Ricks This machine comprises lockstitching instrumentalities, an upper stretching gripper operating in timed relation to said instrnmentalities, shoe positioning means to grip the margin of the sole, and other means hereinafter refei'red to as ,auxiliary positioning` ,means to engage the shoe bottonifarther from the operating point.

In the use Iof a machine of tliisltype we have observed that While it is convei'iientyto causethe auxiliary positioning means, when in actiointo move to andfrom the shoe bot- -toni so as to rise clear from the shoe bottom .in each cycle of operations, and thus give the operator `freedom to manipulate the shoe and avoid constraint on the feed, it is neverthelessLk desirable that the said means should move. only a short` distance from the shoe bottoni, since if the movement is much it becomes possible for the operatorio tilt the shoe considerably iipwaicl-iiiliich adds unnecessarily-to the corrective action called `for from the positioning means and, having regard to tlieshort time available, tends to cause the said positioning rmeans to act in a relatively violent manner on tlieshoe with consequent liabilityto discomfort tothe operator-and `displacement ofthe Work.

rl`lie highest position to which itis desirable to raise the `auxiliary positioning means whenin action is, however, such that if said means occupiesrthat position when it is` oiitof operation it is apt to constitute a ,distinct obstruction when stitching is being performed in the shankof the shoe, a

part of the shoe which customarily does not require the use of the auxiliary positioning Ameans but which, owing to its shape and proportions, does usually require that the operator shall have coiisiderable latitudeA for tipping the shoe in the course of stitching. lt is an object of the inventionto provideauxiliary positioning means which ivill conform ,fully with these requirements.

In machines of the type in question it is customary to provide a linee lever control `for putting the gripper into or out 0faction `and for varying the pulling action thereof such as is disclosed in British Patent No. 22110 ,of 1913. The provision of an additional manual contro-ller for the aux- .iliary positioning means as aforesaid imposes, we have found, an inconvenient additional burden upon the operator already .busied with control of the operation of the machine by the customary clutch treadle and the knee-lever as aforesaid.

. We have, however, ascertained, that the operator requiresteither that the gripper be acting with a. relatively limited pulling action with `the auxiliary positioning Vmeans out of action (a condition of affairs prevailing. When stitching the sides of the shoe at the shank) or tha'tlhe requires the auxiliary positioning means to be in action with the gripper mechanism `giving either the 4limitedpull referred toor, a more extended pull, and it is accordingly a further object of this invention to take advantage of these ascertained requisites in operatioiito reduce the number of controls calling for the operators attention during operation on a shoe when the machine is equipped With means both to control the pull of the gripper and to control the auxiliary positioningmeans.

Again ive have found that the path of operative movement of auxiliary positioning means which moves to and from the shoe when in operation frequently requires to be displaced Without varying the extent o-f its movement, 'and it is a further object-of the invention to provide ready means -for securing this result. a

lilith the above and other objects in view, one important feature of the invention consists in auxiliary positioning means movable, when in'operation, toward and from Cil the shoe in time relation to the operation of the machine and means arranged for operation during work upon a shoe to move said positioning means into an inoperative position, said position being farther' from the shoe than the most remote posit-ion which the said positioning means assumes when in operation.

Another feature of the invention comprises, in a machine. of the type referred to, a unitary control for the gripper and auX- iliary positioning` means to control these devices relatively to the stitching instrumentalities.

Still another feature of the invention consists in means arranged for convenient adjustment by the operator during operation of the machine for varying the initial position of the positioning' means without affecting the extent of its operative movement. Preferably and as disclosed, means is provided for indicating audibly the amount of adjustment being produced.

The above and other objects and features of the invention will become fully evident to those skilled in the art from a consideration of a preferred construction according to the invention, which. is applied to a machine as described in the above mentioned patents and the novel parts of which are shown in the accompanying drawings in which,

Fig. 1 is a side elevation7 partly in section, Yof a machine having embodied therein the present invention;

Fig. 2 is a side elevation of the mechanism for operating the auxiliary positioning means takenv from the side opposite to that of Fig. 1; and

Figs. 3 and 4 are details of mechanism shown in Fig. 1.

rEhe machine in general organization is similarI to that disclosed in the patents above mentioned comprising a work rest l arranged to enter the angle between the side ofthe last and the projecting sole margin. of an inverted stitch-down shoe. The upper of the shoe lies against the rest 1 and the margin of the upper which projects beyond the sole is seized by a gripper' 3 and tensioned outwardly` the movement of the gripper being effected by a lever 5 operated by a cam 7 on a` shaft 9. rllhe sewing mechanism by `which the upper and sole are secured togetherl in the angle between the side of the shoe and the outturned flange of upper comprises the usual presserfoot rand curved awl and needle mechanism similar to that disclosed in United States Letters Patent No. 473,870 granted April 2G, 1892, on application of French and Meyer.

The auxiliary positioning means 2 is fast on an arm 4 of a bell cra k lever pivoted at 5 to the machine frame, The other arm (i of the lever is forked to receive the end of a lilik .8 Connected thereto by a pivot pill l() Lea-reso having an eccentric portion 12, an adjusting linger piece 14 fast to it, and a head 16. The head 16 has a series of peripheral recesses into any one of which a spring-pressed plunger 18 may snap as-the pin is rotated by the finger' piece 14. The plunger 15 is housed in the lever (i and locks the head 1G in adjusted position, there being pins 2O in the head the ends of which project from the head to act as means to limit, by engagement with the lever, the rotation of the h ald in either direction. By rotating the eccentric portion 12 by means of the finger piece 14 the operator can immediately adjust the active position of the auxiliary positioningl means 2 about the pivot 5 of the lever' without varying the extent of its movement, and the clicking engagement of the plunger with the recesses acts audibly to indicate to him what amount of adjustment he is producing.

The rear end of the link 8 is pivoted at 21 to the upper end of a lever 22 pivoted at 24 to an arm 25 formed on the upper side of the hub of a lever 27 which constitutes part of the thread measuring mechanism of the sewing machine which is similar' to that disclosed in the above mentioned Patent No. 473,870, the lever 27 having a rocking movement on a shaft 29. Between its ends the lever 22 has pivoted to it at 23 a latch bar 26 urged downwardly by a spring 2S connected at its ends to the bar and to a bracket 30 secured to the frame. Pivoted to the bracket at 32 is a lever 34 having` a cam end 35 against which a cam roll 36 on the pivot 21 at the upper end of the lever 22 is held by a spring 38 connecting the pivot 2l with the bracket 30. The lever 34 has pivoted to it the ripper end of a bar 40 pivoted its lower end to an operating arm 44 and having a pin 42 arranged to engage the latch bar 26. l'lilhen the operating arm 44 is so positioned that the roll 36 is resting against the low portion of the cam end 35 of the lever 34 the trip pin 42 holds the latch bar raised so that its end is above a plate 4G secured to the bracket and consequently the auxiliary positioning means 2 is raised out of its active path. Under these conditions the lever 22 is oscillating idly by movement; of the arm 25 as the stretching progresses and the pivot 21 constitutes the fulcrum of the lever. Then it is desired to put the auxiliary positioning means into action they operating arm 44 is lowered so that the bar 40 is depressed, withdrawing the trip pin 42 on the bar 40 from the latch bar 2G, lowering the lever 34 and forcing the upper end of the lever 22 forwardly to position the, auxiliary positioning means 2 at the highest point in its active path. At the same time or as soon as the lower end of the lever 22, by rocking on the cam end of the lever 34, has advanced far enough to permit it, the latch. bar 2G snaps Adown in front llt) `high part o'l' the cam lend ot the lever 3a has passed from behind the roll 36 and the trippin `bears on the latch `bar 26, act to litt the latch bai' and permit the spring to re-aet and render the auxiliary positioning means inactive.

The operating arm issecured to one end ot ay `roclrshai't 5() tothe otherend of which `is secured a second arm haviiig thereon a roll whicliengages: a cam slot ii'oriiied in a plate 5S which isar-ranged to be moved up and ldovqn.lthii'ough connections to a linee levertiO Which are similar tofthose described in thelliritish `patent above inentioned. `Surrounding the shaft is .a sleeve arranged to engage-the upper portion et' a slot @8in the plate `58. U @n the sleeve ('32 is an armO connected by a link 72v to an eccentric positioningineans -l for varying `the position of the' gripper `3, this mechanisinrliieing similar to that disclosediu the liiitish patent above mentioned.

Below tlie'rockshaiit 50 is another roch- `shalt T6 having thereon an ai-'in` 78 carrying a roll d() which `engages a lower portion ci .the slot 68. On -the opposite 'end of the roelnihatt TG is an arm 8 2 connected to a stop tB-l-iby which the pulling movement ot `the gripper?) is `controlled substantially as explained in` thev patent `ilast above mentioned.

The relative torinsand disposition ot the two cam slots 56, (S8-inthe plateV .3S andot the three rolls 54, 66,80 engaging the slots i is such that lowering of the -plate from its Vhighest position by moif'einent of the knee lever from its extreme position attlie right toward the lett causes-the inclinedportion foie. the slot 68 at its lower endtol act on the roll 80 and,.through tlieleveri82,vto move the gripper Astop'i'l `forwardly to limit the pulling movement ofthe gripper. At the saine time the uppermost inclinedportion ot the slot 68 acts uponthe-roll@ to rock the sleeve G2 and, through the arm Wand link 72, to turn the eccentric positioning device 74 so that the gripper is iioved: bodily toward the slice. rlliis `adjustment, which gives the `gripper ashort range ot pulling inovementclose to theshoe, istha-t desired when lasting and sewing the `shanlcportion of the shoe, and as `soon it `has ibeen effected the operator-begins t0 `teelt-he 're- `plate 58 to descend further. `however, the roll 66 ,which controls .the

sistance` to further movement et thel knee flever due to a spring plungerfo witlin'hich eccentric positioning device 7a is in the upper verticalportion ot the cani slot (S8 and the roll S0 which controli-sthe gripper stop S-l is in an intermediate vertical portion il() 'which lies between tivo incliiies of the lower portion oi the slot 653. For a time, therefore, the gripper is unal'l'ected by movement ot-the plate 58. At this time, however, the roll 54; on the arm 52 enters and traverses a part of the inclined portion oi the slot all, cau.. ng the arm to move the link 4;( downwardly and set the auxiliary positioning means into action `by releasing the latch 2G and depressing the cammed endet the lever 35. rlhis having beenv effected, the roll SOptftlie gripper stop reaches the. end of the vertical (59. which has an arm-6lcarrying a roll-G6 meansiis unintluencedby nioven'ients ot the lever Sel due to loiveringfot the plate :58 to a position lower than that required justlto bring the highv part ot the cam end ot' thelever B-l into action.

lfflaving thns described our invention, what we claim as nen7 and desire to secure by Letters Patent of the United Statesis:

l. In a machine tor operating progressively upon a shoe through successive cycles, auxiliary positioning n'ieans arranged for inoven'icnt into and out oit operative position, means loractuating the `ausiliary posi.- tioning means when in operative position toward and-fromthe shoe in each cycle, and means under control oi'ithc operator during operation ot the `machinetor moving the :auxiliary positioning inea-ns to its inopera- Vmeans for moving the auxiliary positioning means out ot operative position a distance substantially more than the distance through which it moves when in operative position.

3. In a machine for insert-ing fastenings through the edge extension of a shoe, the combination of auxiliary positioning means movable into and out ot operative position, means for operating the auxiliary positioning means when in operative position through a short path to permit the shoe to be fed when operating upon the forepart and to prevent substantial tipping of the shoe, and means operable when operating on the shank to move the said positioning means to its inoperative position and beyond its path of operative movement to enable the shoe to be tipped.

4. In a machine for sewing through the edge extension of a shoe, the coinl'iination of positioning means arranged to engage the shoe bottom when sewing one part of the slice and prevent tipping of the shoe to cause the stitches to be inserted siibstantially perpendiciilaily to the edge extension, means for effecting a slight iiperative movement of the positioning means in each cycle to permit feeding of the shoe, and means operable when sewing another part of the shoe to move the positioning means out of operative position to permit tipping of the shoe to cause the stitches to be inserted at an oblique inclination to the edge extension.

5. In a machine of the class described, a positioning device arranged to engage the shoe bottom, means for effecting a predeteriniiied operative movement ot said device toward and from the shoe, and means arranged between the device and its operating means manually operable when the machine is in operation to vary the position of said device relatively to its operating means, the extent of its operating movement remaining unchanged.

G. In a n'iachine of the class described, a positioning device arranged to engage the shoe bottom, means for effecting a predetermined operative movement of said device toward and from the shoe, and means comprising an eccentric and a hand lever for varying the position of said device relatively to the shoe without altering the extent of its operative movement.

7. In a machine of the class described, a positioning device ar anged to engage the shoe bottom, means for efl'eeting an operative movement of said device toward and from the shoe, and means for varying the position of said device relatively to the shoe in the direction of its operative movement while the extent of its operative movement remains unchanged including a hand lever and means for aiidibly indicating to the operator the amount the lever is turned in either direction when the position of saidv shoe bottom, means for effecting an operative movement of said device toward and from the slice, and means for varying tht` position of said device relatively to the shoe while the extent of its operative movement remains unchanged comprising an eccentric, a hand lever connected thereto and means for audibly indicating to the operator vthe amount the eccentric is turned.

9. In a machine for lasting and sewing stitchdown shoes, the combination of posi tioning means for a shoe, a gripper, auxiliary positioning means arranged over the shoe bottom and movable when in operative position to permit feeding movements ol' the shoe and movable out of operative position to permit tipping of the shoe, means' for controlling operation of the gripper, and a unitary means for effecting during opei'atioii of the machine movement of the auxiliary positioning means into and out of operative position and movement of said gripper controlling means.

l0. In a machine for lasting and sewing stitchdoivn shoes, the combination of positioning means for a shoe, a gripper, auxiliary positioning means arranged over the shoe bottom and movable when in operative position to permit feeding movements of the shoe and movable out of operative position to permit tipping of the shoe, means for controlling operation of the gripper, and a single member movable by the operator first to render the gripper active, then to i'ender the auxiliary positioning means active and then to control the amount of gripper action in excess of that existing prior to the coming into action of the auxiliary positioning means.

11. In a machine for lasting and sewing stitclidown shoes, the combination of sewing instrumcntalities, a lasting gripper, positioning means, means for varying the pulling movement of the gripper, auxiliary positioning means movable into and out of operative position, means for varying the initial position of the gripper, and means for varying the pulling movement of the gripper.

12. In a machine for lasting and sewing stitchdown shoes, the combination of sewing instrumentalities, a lasting gripper, positioning means, means for varying the pulling movement of the gripper, auxiliary positioning means movable into and out of operative position, means for varying the initial position of the gripper, means for varying the pulling movement of the gripper, and means undei' the operators control for simultaneously effecting the gripper adjustments and subsequently effecting movcment of the auxiliary positioning means into operative position.

13. In a machine of the class described, the combination ofi means for operating lll() progressively about the periphery of a shoe, a device arranged to engage the shoe, a lever having connection to said device, power means for oscillating the lever, a knee control, and connections from said knee control to said lever to cause the said device Vfirst to be moved into operative position and then to provide an effective fulcrnm for the lever to cause said device to be operated toward and from the shoe.

14. In a machine of the class described, the combination of means for operating progressively about the periphery of a shoe including an upper pulling gripper, a positioningl device arranged to engage the shoe, a power operated lever having connection to said device, a knee control, and connections rom said knee control to said lever and to the gripper to cause the positioning 20 device first to be moved into operative posiA tion, then to be operated toward and from the shoe and then to vary the pulling action of the gripper.

15. In a machine of the class described, the combination of means for operating progressively about the periphery oit' a shoe including an upper pulling gripper, a device arranged to engage the shoe, power means for operating the device,'a knee lever, a slotted plate movable by the knee lever, and connections from said plate to said device to cause movement of the plate lirst to move the device into operative position, then to cause the device to be operated toward and Yfrom the shoe and then to effect adjustment oi the gripper.

In testimony whereof We have signed our names to this specification.

FRED HICKS. REGINALD BOYD IVOODCOCK.

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