US1546819A - Lasting machine - Google Patents

Description

July 21, 192s.

c. M. BAGsHAw LASTING MACHINE Filed Sept. 26. 1923 5 Sheets-Sheet 1 Gif In ven for: 55W

July 21,- 19z5.

. C. M. BAGSHAW LASTING MACHINE Inuenor.

July 21, 1925.

' C. M. BAGSHAW LASTING MACHINE Filed sept, 25, 1922 5 Sheets-Sheet 5 July 2l, 1925.

I Y C. M. BAGSHAW LASTING MACHINE Filed Set. 26 1922 5 Sheets--Sheet 4 July.21,19'2s.

' c. M. 'BAGsHAw LASTING VMACHINE Filed sept. ze.

1922 5 Sheets-Sheet 5 Invenor.

Patented July 2l, i925.

UNlTtt) @Hannes tirar-item BAGSHAW, y0l? LEIL'CESTER, ENGLAND, ASSIGivon To THE G11-SON 01H03 MACHINERY lC0', LIMXTEDiOF LEIGESTEQB@ ENGLAND, A BRIrIsI-i company,

tirarme Macaira @piraat-ion fue@ september es, l1922. serial No. serie01.

To all 'iu/Om may concern:

Be it known that l, Ci'iannns lvlAiriiN llaosirnw, a subject ot, the King of Great Britain, ol Laburnum Road, @ld Humberstone, Leicester, England, have invented an liiiprovement in or Relating to Lasting chinos, of `which the following is specilication.

This invention relates to lasting machines of the bed lasting type wherein ,the ledge of the upper is turned over and ironed down by means of movable' wiper plates, and its object is toconstruct an improved `forni of machine intended for lasting the heel seat ot the work..

` The invention consists of a lasting machine of theabove mentioned type having, in combination, movable wiper plates for turning the edge ot the upper over upon the insole, means for inserting a plurality of fastening tacks through the wiper plates `and edge of the upper to secure the latter, a heel clamp toengage the `upper round the baci; and sides, and automatically acting means to effect. close engagement of the work and the heel' clamp whereby the latter is caused to firmly hold the upper tov the baci: and sides'oit the last during the wiping` action of the wiper plates and mould and shape the upper to last in this region.

The dombination just referred to constitutes an important improvement as it enables the machine, lat one operation, to,

mould and shape the back and sides ot the upper to the last, hold said. upper in this region to prevent slip of same on the last, and turn 4over and secure the edge of the upper.

lt has been previously proposed in a b ed lasting machine, for the purpose oli d riving a plurality ol' tacks through each wiper plate to secure the lasted upper, to provide the wiper plates with a seriesbo nozzles and a correspondingI series or group of drivers arranged to be i'eeiprocated by any suitable means, said 'nozzles being rigid .on the wiper plates and moving withthem` p o ln the machine of the present invention, for inserting the fastening tacks there is provided a series ot drivertubes each containing' tac-lr feeding and driving means, the lowerentremit'es 'ot said tubes coinmunicating with holes in and being mounted upon the wiper plates so as capable of movement relatively thereto as well as movement therewith. rThe upper ends oit the driver tubes are held by a device which allows them to oscillate and slide therein when the lower extremities move with the wiper plates.

lt is also-a feature of the invention that `each drivertube has a driver bar projecting from its upper end and there is provided in association therewith a member common to all the driver bars for operating` them simultaneously for driving the tacks, said member being operated by power actuated means. v

In further .describing the invention reference will be made to the accompanying drawings wherein Figure l is a side elevation of an organized machine embodying the invention.

Figure 2 is a half sectional plan of the heel clamp `and wiper plate mechanism in normal position.

Figure 3 is a similar view showing the wiper plates advanced as in operation.

Figure 4 is aside elevation of the parts shown in Figure 3, but with the wiper plates retracted.

Figure 5 is. an elevation of the cam arrangement tor operating the driver lever.

Figure 6 is an elevation of the drive controlling means. i

Figure 7 is a `front elevation of the wiper mechanism and the associated tack delivering means.

Figure'S is `a vertical section of one of the .driver tubes and the parts associated therewith.

Figure 9 is ya front Velevation of three adjacent driver tubes.

Figures 1, 5 and 7 are drawn to a smaller scale than the other ligures, and throughout the drawings likeparts are designated by `the saine reference characters.

In the machine shown in the drawings as an example .of the invention, the last, represented at l inFigure l, is supported in a horizontal position, bottoni upwards, by a jack 2 adjustably attached to a `post slidable vup and down in a bearing i pivotally carried at `5 'on the machine frame G. rlhe post Stalls by its own weight and rests upon a step supported by ,a spring 8 'in a lever 9 operable by ai rod 10, lever ll and cam l2 tor raising the post and jaclr at the time required. A treadle not shown) may be con nected with the lever 9 or some associa-ted part for raising the post independently of the cam. By means of the spring 8 the work on the last is yieldingly pressed up against the underside of the wiper plates (hereinafter referred to) when the post and jack are raised.

The jack 2 carries an adjustable toe support 13 adjustable bodily along an arm 14 in relation to a pin 15 on which the last is placed. Vertical adjustment of the jack 2 on the post 3 is effected by rotation of a liandwheel 16.

Located in a recessed part 17 (Figure 7) of the machine frame 6 and attached to an upper structure 18 on the latter is a bed 19. This bed (Figures 1, 2, 3 and 4) carries a heel clamp 2O furnished with a iiexible band 21 for engaging the back of the work. rThe clamp is slidably adjustable in the bed in a forward and backward direction the position being determined by a screw 22 with which a shoulder 23 on the clamp makes contact. The jack 2 is connected with a lever 24 by means of a coupling device 25 the said lever being fulcrumed at 26 and acted upon by the arm 27 of a bell-crank lever 28 mounted upon the same fulcrum. To the arm 29 of the lever 28 is connected a rod 30 attached at its opposite end to a treadle 31. Depression of the treadle 31 causes the coupling device 25 to pull the jack towards the machine frame thereby pressing` the back vof the heel part of the work into engagement with the flexible part 21 of the heel clamp and forcing the toe of the last down upon the toe rest 13 so that the work is firmly held.

Mounted to slide within the bed 19 is a housing or box 32 (Figures 2, 3 and having therein wiper plates 33 removably carried by holders 33a arranged to slide in arcuate guideways in the box so as to give the plates a relative closing and opening movement as represented in Figures 3 and 2 respectively. The housing or box 32 is moved backwards and forwards horizontally to bring the wiper plates into and out of position over the heel seat of the work supported on the aforesaid jack. This movement is imparted by means of an eccentric 34 on a cam shaft 35, (Figures 1 and 4) operating in conjunction with springs 36 the latter being disposed one on each side of the eccentric and suitably arranged to draw the box backwards from the work and the eccentric operates through the medium of a telescopic connecting rod 37 to push the box forward. The opening and closing movements of the wiper plates 33 are imparted by means of racks 38 (Figures 2 and 3), pinions 39 and a rack 40. The racks 38 slide on the bed 19 and are connected to the wiper plate-holders 33a by links 41; the rack 46 is fixed on the bed 19; and the pinions 39 are mounted upon pins 42 in the box 32 so that they move with the latter and by engagement with the fixed rack are rotated and transmit sliding movement to the racks 38.

A handlever 43 (Figures 2, 3, 4 and 7) is provided for initially moving the boxA and wiper plates forward to try the setti ne; of the work in relation to wiper plates before the machine is started. For this purpose the before mentioned rod 37 is formed to permit a certain amount of free movement of the box to take place. The end 44 of said rod which is pivotally connected to the box at 45 (Figure 4) is formed to slide within a hole 46 in the rod 37. A hand nut 47 adjustable on a screw threaded part of said end 44 constitutes an abutment to take the thrust of the tubular rod when the latter moves forward.

Each wiper plate 33 has a series of holes 48 (Figures 2, 3 and 8) through which the tacks are driven into the turned over edge of the upper. Each hole on the upper face of the plate opens out into a recess or cup 49 in which the lower rounded extremity of a driver tube 50 rests. The several driver tubes 50 pass at their upper ends through holes 51 in a bracket 52 (Figures 1, 7 and 8) fixed to the before n'lentionvd upper structure 18 said holes being rounded as shown in Figure 8 to allow the tubes to oscillate and slide therein as the lower extremities of said tubes follow the movements of the wiper plates. The driver tubes 50 are retained in position by their own weight.

Each driver tube contains a driver bar 53 slidable therein and carrying at its lower end a driver 54. A spring- 55 normally holds the driver bar raised with its upper end projecting beyond the top of the driver tube. Each driver tube has a tack throat 56 at its lower end which communicates with the hole in the wiper plate. An inclined tack feeding passage 57 is formed through the side of the driver tube and at one end leads into the tack throat 56 while 4it the other end it is in communication with a flexible delivery tube 58 which is connected with a. tack supply box or apparatus of suitable character (not shown). Each tack after being delivered to the throat 56 is held in the latter as represented at 59 by a device, such for example as a bevelled pin 60 carried by a spring 61, capable of yield.- ing` when the driver 54 descends.

Pivotally mounted at 62 in the upper structure 18 (Figure 1) and situated above the upper ends of the several driver bars 53 is a driver lever 63 with which is connected a strong` spring 64. This lever is provided with a series of adjustable tappets 65 one for contact with each driver bar. The downward movement of the lever 63 is limited by an adjustable stop 65. therein which engages with ,a suitable pad i6? on the bracket 52,

The driver lever 653 is moved to a nor mal set position, shown in Figure lip-in which its spring); @Il is tensioned, by a piu `oted catch 6 8 (Figures l and :5) on a Slide rod `69 actuated by `a cani i0 on the atei-esaid shaft The catch engages with a nose `7l on the lever 63 and 'is turned on its pivot 172 by the engagement ojlt a bloeit Z3 adj-.ustably mounted by a pin 73 on the cain ZO with an `arm Telattached to said catch. When thus turned the catch 6,8 suddenly re ses the lever 63 which is there upon naci/'od by itsV spring`v 64 and s se 'eral driver bars 53; thus forcing dnwn all the Ifniuers to insert the ltaci-gs.

In the completeeperation of the machine, last with the upper assembled is placed @in the `last pin 1,5 Yand the treadle .iS Cl@- pressed to move the post 3- on its pvot and .carry the work; lightly into contact with the heel band 2l of the heel clamp 20. The operator is then able to judge whether the work is at the correct height for the wiper plates 38 to iron the upper and stifeni-ng down tightly on the last when they subsequently move torward- An adjustment of the wor; to obtain the correct relation between the worlr and the wiper plates may be made, if necessary, by rotation .of the handwheel 1.6. The toe support 13 may be raised or lowered to bring the heel seat iof the work `approztimately parallel to the wiper plates. For some classes of worlr the toe support may be ,discarded in which eases the operator will hold the work level .asY the wiper plates operate.

The weight ol? the work, jack and post is taken by the springr 8 in the lever- `il, which at this stage is held in position by the rod 10, lever 1l and cani l2. The machine is now started by actnatien ,of a startinghandic 'Z5 (Figures l and `6.) whereupon a cam 71,6 on the shaft 3.5 acts upon the before mentioned lever 24 and, by means of the coupling device 25, draws the back oat the work into close engagement with the. heel clamp. rhe coupling device has a strong spring 77colnbined with it through which Vthe drawing action just mentioned is transmitted so that the lever 24 acts in a yielding` manner and thus enables the work to accommodate itself to the position to which the heel ,clamp has been adjusted by the screw 22. `The adjustnient of the heel clamp by the said screw regulates the distance at which the tacks are inserted from the edge ol' the work.

The cam 76 is timed to impart the backward pressure before the wiper plates `operate on the worlr. The eccentric 84 comes into operation to move the slide box 32 forward thus carrying` the wiper plates 83 over the heel seat and causing them at the saine time to clone, towards each other to iron and wipe overthe upper `and press it down upon the last. J ust about the time that the wiper plates reach their fully operative position `ever the heel seat, the lever 9 is operated by the 1 2 to impart a strong` upward pressure on the post 3 so that the wiped over upper is pressed upwards against the underside of the wiper plates. This upward pressure is., it will be noticed, transmitted to the c post 3 through the before mentioned springv 8 which, prior to the actuation of the lever ll by the .cani l2 and when there is no initial ,tension en, is capable of yielding slightly, if necessary, while the wiper plates are passing over the work. A

`Alter the cam 12- has operated'in the inanner just described to apply the full upward prfsure to the work and before the lever G3 is tripped to drive 'the tacks, the machine gaps allow .the controlliup,` handle to be acted upon its springl at each half rev- 4elution of the cani shaft 35, `Il? it is not de .tired to stop the machine at the halt revolution, the operator holds .the handle so that the roll 82 thereon does not drop intothe` corresponding gap` in the cani 78. v

After the upward pressure has been applied and, if the machine has stopped after it has been restarted, the blocl: 73 on the caln 70 makes Contact with the arni Pl and knocks the catch 68 olf the nose il there- 'releasing' the lever 63 which is actuated to drive the taclts as already described. i

Aiter the tacks are driven, telle cani l2 allows. the post 3 to drop to a lower position than the normal one thereby bringing' the lill) work down quite clear oi the wiper plates.

the ineantiine the cani 76 moves around to a position which releases the back pressure i. e. the pull on the jack so that the latter with'the post lfalls outwards thus carrying the work away from the heel clamp to a convenient position for removal by the operator,

The before mentioned handlever 13, may, in addition to beine' .used for the aforesaid purpose, be used for 'bringing the wiper plates forward by hand to partially break down the upper and stiener before the ina chine commences to operate under power.

Adjustment of the hand nut 47 on the telescopio rod varies, the length oit movement of the wiper plates by providing more or less lost motion between the parts 37 and :1.24 and this also varies the angle to which the said plates turn in the slide box 32 thereby enabling suitable regulation to be made for lasts of various sizes.

The telescopic connection between the box 32 and its actuating eccentric 34 also serves to allow the box to remain in the advanced position until the upward pressure on the wiper plate is released whereupon the springs 36, which also allow the box to be held in the forward position by the upward pressure, act to draw the box backwards. 'lhis arrangement obviates the friction which would otherwise be engendered if the eccentric commenced to pull the box back before the upward pressure was relieved.

`What l claim then is l. A boot or shoe lasting machine of the bed lasting type having, in combination, movable wiper plates for turning the edges of the upper over upon the insole, means for inserting a plurality of fastening tacks through the wiper plates and edge of the upper to secure the latter, a heel clamp to engage the upper round the back and sides, said means comprising a series of driver tubes each containing tack feeding and driving means, the lower extremities of said tubes communicating with holes in and being mounted upon the wiper plates so as to be capable of movement. relatively thereto as well as movement therewith, and automatically acting means to effect close engagement of the work and the heel clamp whereby the latter is caused to firmly hold i the upper to ,the back and sides of the last during the wiping action of the wiper plates and mould and shape the upper to the last in this region.

2. A boot o1' shoe lasting machine of the bed lasting type having in combination, movable wiper plates for turning the edges of the upper over upon the insole, means for inserting a plurality of fastening tacks through the wiper plates and edge of the upper to secure the latter, a heel clamp to engage the upper round the back and sides, said means comprising a series of driver tubes each containing tack feeding and driving means the lower' extremities of said tubes confimunicating with holes in and being nounted upon the wiper plates so as to be capable of movement relatively thereto as well as movement therewith, automatically acting means to el'lfect close engagement of the work and the heel clamp whereby the latter' is caused to firmly hold the upper to the back and sides of the last during the wiping action of the wiper plates and mould and shape the upper to the last in this region, and a device which holds the upper ends of the aforesaid driver tubes and allows them to oscillate and slide therein when the lower extremities move with the wiper plates.

3, A boot or shoe lasting machine of the bed lasting type having, in combination, movable' wiper plates for turning the edges of the upper over upon the insole, means for inserting a plurality of fastening tacks through the wiper plates and edge of the upper to secure the latter, a heel clamp to engage the upper round the back and sides, said means comprising a series of driver tubes each containing tack 'feeding and driving means the lower extremities of said tubes communicating with holes in and being mounted upon the wiper plates so as to be capable of movement relatively thereto as Ywell as movement therewith, automatically acting means to effect close engagen'ient of the work and the heel clamp whereby the latter is caused to firmly hold the upper to the back and sides of the last during the wiping action of the wiper plates and mould and shape the upper to the last in this region, the lower extremities of the aforesaid driver tubes being rounded and resting in recesses formed in the wiper plates, and a device which holds the upper ends of said tubes, said tubes passing through holes in said holding device which allows them to oscillate and slide therein when the lower extremities move with the wiper plates.

4t. A boot or shoe lasting machine of the bed lasting type having, in combination, movable wiper plates for turning the edges of the upper over upon the insole, means for inserting a plurality of fastening tacks through the wiper plates and edge of the upper to secure the latter, a heel clamp to engage the upper round the back and sides, said means comprising a series of driver tubes each containing tack feeding and driving means the lower extremities of said tubes communicating with holes in and being mounted upon the wiper plates so as to be capable of movement relatively thereto as well as movement therewith, and automatically acting means to effect close engagement of the work and the heel clamp whereby the latter is caused to firmly hold the upper to the back and sides of the last during the wiping action of the wiper plates and mould and shape the upper to the last in this region, each of the aforesaid driver tubes having a driver bar projecting from its upper end and there being provided in association therewith a member common to all the driver bars for operating them simultaneously for driving the tacks, said meniber being operated by power actuated means.

5. A boot or shoe lasting' machine of the bed lasting typehaving, in combination, movable wiper plates for turning the edfV s of the upper over upon the insole, means rer inserting a plurality of fastening tacks through the wiper plates and edge of the upper to secure the latter, a heel clamp to eugage the upper round the back and sides, said means comprising a series of driver tubes each containing tack feeding and driving means the lower extremities oi said tubes communicating with holes in and being mounted upon the wiper plates so as to be capable of movement relatively thereto as well as movement therewith, and automatically acting means to effect close engagement oit the work and the heel clamp whereby the latter is caused to firmly hold the upper to the back and sides of the last during' the wiping action of the wiper plates and mould and shape the upper to the last in this region, the aforesaid driver tubes having drivingl bars projecting from their upper ends which bars are operated by a member common to all and consistingor" a lever provided with a series of independf ently adjustable tappets, one tor contact with each driver bar, said lever being moved to normal set position by cam-actuated means and moved for operating the driver bars by a spring.

6. A boot or shoe lasting machine of the bed lasting type having, in combination, movable wiper plates tor turning the edges of the upper over upon the insole, means for inserting a `plurality orn fastening tacks through the wiper plates and edge ot the upper to secure the latter, a heel clamp to engage the upper round the back and sides, said means comprising a series of driver tubes each containing tack feeding and driving means the lower extremities of said tubes communicating with holes in and being mounted upon the wiper plates so as to be capable of movement relatively thereto as well as movement therewith, and automatically acting means to elect close engagement of the work and the heel clamp whereby the latter is caused to iirmly hold the upper to the back and sides of the last during the wiping action of the wiper plates and mould and shape the upper to the last in this region, the aforesaid driver tubes having driving bars projecting from their upper ends which bars are operated by a member common to all and consisting oit a lever provided with a series ot independently adjustable tappets, one for Contact with each driver bar, said lever being moved to normal set position by cani-actuated means and moved for operating' the driver bars by a spring, said cam-actuated means including a pivoted catch on a cam-actuated slide, said catch holdingl the leverwith its spring tensioned and being moved by a cam to release said lever for actuating the drivers.

7. A boot or shoe lasting machine of the bed lasting type having, in combination, movable wiper plates for turning the edges of the upper over upon the insole, means for inserting a plurality of fastening tacks through the wiper plates and edge ot the upper to secure the latter, a heel. clamp to engage the upper round the back and sides, and automatically acting means to elect close engagement ot the work and the heel clamp whereby the latter is caused to iirmly hold the upper to the back and sides of the last during` the wiping action of the wiper plates and mould and shape the upper to the last in this region, said automatically actingl means consistingof a post carrying a jack for the work arranged to move about a pivot the indraw movement being imparted to `said post by means comprising a lever, a

cam for moving said lever, a coupling de` vice connecting said lever and post and a. spring combined with said coupling device through which the drawing action is yieldingly transmitted Yfrom the lever to the post, said post, for the purpose of pressing the work against the face of the wiper plates, being also slidably actuated by means comprising a lift lever, a yielding step in said lever for engaging the post, a spring supporting said step, a second lever, a cam to actuate the latter, and a rod connecting the second lever with the lift lever.

In testimony whereof, I have signed my name to this specication.

CHARLES MARTIN BAGSHAV.

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