US1922288A - Seam pressing machine - Google Patents

Description

Aug.. 15, 1933.

Filed July 6, 192s.

PatentedAug.; 15, `1933 g UNITED ,STATES PATENT IOFI-"1ct:

s s s i 1,922,286 i *s snAMY raEssING MACHINE `William Hamann, Irondequoit, N. Y., assigner l to United Shoe Machinery Corporation, Paterson, N. J., a Corporation of New Jersey Application'July 6, 1928. Serial No.` 290,806 19 Claims. (Cl.`223-28) This invention relates to seam pressing maf. i chines and is herein illustrated as embodied in;`

a seam pressing machine ofthe type disclosed in Letters Patentof the United States No. 1,833,-

930, granted on December 1,` 1931, uponanapplication led in the name of, George Boulton.

It is customary, during the usual operation of seam pressing machines when Yoperating upon certain classes of work, for `the 'work `to be backed out instead of being fed past the entire work-engaging surface of the ironing block.

The rapidity with which work of this sort mayV be passed through kthe machine depends, in a large measure, lupon the facility with which the operator may retract the ironing block from the work-supporting feed roll, thereby freeing the work so that itmay be withdrawn inl `the most convenient manner. In machines of the type shown in the patent `referred to, a seam ironing block is spring pressed toward a rotating Work-supporting roll and may be retracted from the roll by depressing a treadle which is connected with the ironing block in such away that the depression of the treadle, which is ac- 2 companied by a deection of the spring, is

resistedby the spring pressure upon the ironing block. i c

In View ofthe foregoing, and in accordance backing out of` the work in the manner before referred to is facilitated by means for retracting the ironing block without moving or effectl ing, and hence without energizing, the resilient means which urges the `block toward the worl;

supporting roll. To this end, in the illustrated machine means for retracting the ironing block, which means normally transmits the pressure of the resilientmeans to the ironing block, is constructed and arranged to relieve the pressure of` the resilient means as the blockis retractedg` but the above is accomplished without removing the stress `from the resilient` means. As shown, this ironing block"retracting means is interposed between-the resilient `means and the ironing block and comprises a toggle mechanism which is operable by a substantially constant `force irrespective of the strain in said resilient means successively to relieve the presand to `retract the ironing block from" its opwith a feature of the present invention, the" sureof the resilient means on the ironing blocktically negligiblebut constant amount of effort regardless ofthe resilient `force urging ittoward the feed roll. i The illustrated embodiment of theinvention, including otherfeatures not heretofore speci.- 60. cally pointed out, will nowbeldescribed, reference being `had to the accompanying drawing, in which I i i l Fig. l is a sectionalelevation of `a machine embodying the invention; v Fig. 2 is a sectional -view vtaken along the line II--II of Fig. 1; and l .l Fig, 3 is a perspective View, partly broken away, o f the work support.

The illustrated seam pressing machine, which 70l may be used for pressing seams in articles made y of cloth or leather, is adapted to press the seams in caps and is provided with a work-supporting feed roll 4, `a stationary vwork support 6 arranged to cover portions of the feed roll and support l the work as it is being presented to the machine,

Vai seam-opening plow 8 having `on each side thereof a seam-guiding linger 10, and a heated` presser member or ironing block 12. The plow 8 y l is carried by a verticalrod 14 which is slid-80- able in guideways formedin lugs 16, 18 projecting from the frame of the machine. A spring 20 surroundingthe rod 14,` between thev lugl and a collar `22 fixed on .the`rod, urges the plow i downwardly and tends to hold the plow in a lposition `determined byan adjusting nut 24 on the upper end ofthe rod and arranged to engage the lug 16. The seam-guiding iingers` 10 comprise thin, resilient strips the ,upper Yends of which are Xed to the upper portion ofthe plow 8 bymeans of screws such as l26 and are'ad- Vjustable sidewise by means of screws 28 the innerv ends of which engage the central portion ofthe plow member. By adjusting the seam guiding fingers they may be made the better toaccommodate varying thicknesses and kinds of work; l. Y"

Apresser-foot 30 is provided with a yokeshaped member `having rearwardly curved arms arranged to straddle the plow and the seam- 1` guidingfiingers and carrying atthe lower end of l each'ofdts arms a freely rotatable roll 32 the. periphery of which engages that of the worksupporting feed roll 4'V at either side thereof. The presser-foot 30 is secured to the lower Aend 10 ofa Vertical rod 34 mounted` for yielding, sliding `movement in guideways formed one in an extension of the lug 16 and the otherin a lug 36. The presser-foot 30 isurged downwardly toward the work, and isadapted to be held in 110,

nions 6.0 (FgtrZ).

yielding, feeding engagement therewith, by means of a spring 38 encircling the rod 34 between the lug 16 and a collar 40 adjustably fixed on the rod. As shown, a nut 42, threaded on the upper` end of the rod 34, is adapted to engage the upper side of the lug 16 adjustably to limit the downward movement ofL the pressen foot toward the feed roll.

In the illustrated machine, for the purpose of lifting the plow with the guiding fingers and the presser-foot with the ironing block so as-to facilitate the backing of the work out of the machine, extensions 44, 46 projectv rearwardly from the collar and plow 8respectiv-ely, and

into the path of movement4 of thecollanZZ andl a forward portion 48 of the-ironingblock 12,v respectively.

By the above-described means, the presser-foot and the plow with theguiding ngers are retracted substantially simultaneouse ly with a retractive movement of the ironing block, .therebyr providingV ai clear. passage for withdrawing. the work; fromr beneaththe ironing block. p

The-illustrated work support; 6.; has a surface which is substantially spherical in form Vand covers the feed roll 4v in such` al manner as to eliminate the danger'of oil or grease from its bearings reaching the work. The work..support 6 is clamped tothe frameA of the machine by means of a screw 50 whichV passes through an elongated slot 52v int a= web. 54- (Fig. '3), allowing the support to be adjusted-,heightwiseol' the feed-roll..

Except in certain respectshereinafterj pointed out,the construction and arrangementy ofy the par-ts ofthe present machine` as thus far describedv aresubstantially the same as those of the correspondingparts in the machine shown andy described in. the patent hereinbef'ore re.-l

ferred to; l

Aslembodied in the. machine herein describedi the ironing block- 12. isy secured to a carrier" 56 which isvslidably: mounted in. a guide 58 pivoted to the frame of the machine by` means of trun- 'Ifhe reduced end'of a screw 62(Fig. 1) carried by'the guide 58r engages a leyway v64 in theA carrier 56, thereby to: prevent rotation of t-he carrier relatively-1 to` the guide. The guidel 58- may beheld in any' adjusted position by means of.r av screw 66-v engaging .the frame and passing` through an arcuate slot 68k in anupstanding lug 70 integral with the guide' 58; A'spring A7-2 is coiled about and. abutsthe lower end ofH a rod 741 slidably mounted in a bushingV '76 having threaded engagement with the frame as at 7.8 and adapted tov be'locked to the frame by a check nutv 80. A nut 82 and check= nutv34 are threaded upon the upper. end' of the rod '74- adjustably to limit the: downward displacement of the rod '74' and hence toY regulate thef strain in the; spring; 72. interposed between the lower end of the bushing '76 andf the' upper end ot the spring 72 is oneA extremity. of

a lever 86- which is pivotedV to the frame aboutY V11) mounted in the frame of the machine.

and that the resistance offered to the work by the ironing block may be regulated by altering the position oi the nuts 62 and 84 on the end of the rod 74 which resists any downward i'orce of the spring 72 imparted to it through the arm 86, the toggle 90, Q2, the carrier 56 and the ironing bloclr 12, on account oi being lifted by the work as it passes thereunder.

`The carrier 56 and the guide 58 are slotted, asat 106 and 102, to accommodate the toggle link 92 and an arm 104 which is connected at one end with the knuckle joint 94 of the toggle and at the other end to an arm 106, as shown atV 1108. The arm 106 is fixed upon a rock shaft An arm 112 is iixedto the end of the rock shaft 110, at the rear of the machine, and may be operated by a treadleY (not shown) through a rod 114 which connects the arm 112 with the treadlc which may be depressed to retract the ironing block with a minimum of eiort on the part of thev operator since the strain in the spring 72 is notA materially altered when the toggle is broken. kA suitable guard such as 116 is providedA upon each side of the ironing block'. to pre vent accidental'contact therewith.

Xn* opere. on, the work., such s i stance, placed display side down ovf -.v support'V 6 so that an upstanding projection 1 upon its top portieri engagesthe vertex yoil-.h3 5"' seamto be vircssed.. As the work the plow 8, the upstandingmargins of the .seam are di.` rooted between theV inturned lower of 'the guide lingers 10. At this point the wor to pass undenieath the roll 32, thereby f inV feeding the werk to the ironing bloc 1 seam is of short length; er ii" for any other reason it is not desired to'vieed the w entire work engaging face of' the nv i, the ironing block be quickly nd eas tracted byxthe operator andl by a slight p; on the treadlovhieh substantially cone" respective breaking; erative.

and, through the arm 104, wi 94 oi' the toggle 9", 92 in the i arm 10.4. soon the toggle -.sil are moved out of alinement t .e spring 72, acting thro the lever S6, will assist the operator in coll'. ing the'toggle until the end of the le the inner end vof the bushing 76. treadle pressure, eat enough l, the weight ofi'L nd the r ofl the presser -d plow l0, the complet "actionV oi the ope whereby the work. may easily be removed from the machine.

While nogreat amount of i'orce is 1 retract tlreironing bloc lustrated mentioned patent, continued and eration of the treadle of the aber machine beccmeswearisome to 'the oner...tor bcfore the completion ofa d ys w 1m Vious, in View of the foreg illustrated 'ino hine, that vthe blo tracted by means theftoggle tif.` anism associated therewith without e the spring 72, and` hence the amount oi quired of the operator in the use of the ma is relatively slight.

Having thus described my invention, what l claim as new and desire tosecure by Letters PatY ent of the United States is: l

1. In a seamfironing machine, a work` support an ironing bloclna presser foot, resilient means normally urging saidiblock toward said support,

andmeans constructed and arranged to retract boththe block and the presser foot without moving said resilient means. i l

V12. In seam'ironing machine, a work-supporting feed roll, an `ironing block, resilient means "urging said block toward said roll, means whereby-,the pressure of the block` against the work on the roll may be regulated, and means constructed and arranged to be operable'by substantially `a` constant force',v irrespective of i the stress in said resilient means, to retract said block from its operative position. i i

3. In a seam ironing machine, a worksupport, an ironing lblock. mounted for movement toward and from said support, an adjustable stop, means for urging said block toward said support, and means connecting said last-mentioned means and said block arranged to engage said stop whereby the movement` of the block toward'the support Vis limited.

4. In a seam ironing machine, a Wo1'l:-sup porting feed roll, an ironing block, resilient means urging said bloclr toward said roll, means for regulating the pressure of the block against the work on the, roll, and means interposed between the block and said resilient means and constructed and arranged to be operable by substantially a constant'force, irrespective of the stress in said resilient means, to retract said bloclr from its operative position.

5. In a seam ironing machine, a work-supporting feed roll, an ironing` block, resilient and away from said support, a stop, resilient means for urging said block toward said support,

a toggle for retracting said block fromsaid support, means for operating said toggle constructed and arranged normallyto hold said toggle in y, straightened position, `and means connecting said toggle and resilient means arranged to engage said stop wherebythe proximal position of said bloclz with respect to said support is limited.

'7. Ina seam ironing machine, a work support an ironing block, means for operating said block comprising lever and links connecting the lever and'block, and resilient means normally urging said block towards said support, said resilient means being arranged to engage said lever.

8. In a seamV ironing machine, a work supuport, an ironing block, resilient means normally urging said block toward said support, `a stop for limiting the proximal position of the block with respect to the support, a toggle `for retracting said block, and a lever connecting said -toggle and resilient means, one end of said lever being disposed between said stop and resilient means. f

9.` In a seam ironing machine, in combination, ar feed roll, a pivotally mounted ironing block,

'resilient means normally urging said block toward said roll, and means comprising a toggle and a treadle mechanism operatively associated 'therewith for rendering said resilient means in-` operative without materially relieving the strain 4in said resilient means.V

i 10. In a `seam ironing machine, in combination, a feed roll, `apivotally mountedironing block, resilient means normally urging said block toward said roll, and means comprising a toggle and a treadle mechanism operatively associated i therewith forretracting said block from said rollvvithout a` substantial alteration in the strain in saidresilient means; i

l11.In a seam ironing machine, in combination, a feed roll, a plvotally mounted ironing block, resilient meansnormally urging said block toward said roll, and means `interposed between said block and said resilient means comprising a toggle and a treadle mechanism operatively as'soelatedy therewith for retracting said block with.- out energizing said resilient means.

i 12.In a seam` ironing machine, a `work-.sup-

porting feed roll, an ironing block, a lever, av

movement of the lever in the opposite direction,

collapsible `but normally rigid connections between the lever and the presser block constructed and arranged to retract said block without moving said lever, and means for collapsing said normally `rigid connections.

14. In a seam ironing machine, a Work-sup- ',porting feed roll, a pressure-foot and seam-opening means in juxtaposition thereto, an ironing block, resilient means normally urging said block toward said rollfmeans comprising a toggle and a treadle mechanism operatively associated Vtherewith for retracting said blocl: without energizingsaid resilient means, and extensions on the seam-opening means and' pressure-footprotruding into the path of movement of the ironingblock andthe seam-opening means respecg tively whereby said presser-foot and seam-open- Ving means are retracted with the iron block.

l5. In'a seam ironing machine, a work-sup porting feed roll, a presserdoot and seameopernA of movement of the ironing` block and the seamopening means respectively whereby said presserfoot and seam-opening means are retracted with the block.

16. In a seam ironing machine, a work sup port, an ironing means, resilient means for causing pressure against said ironing means to urge it toward the support, means for adjustably limf iting the movement ofthe ironing means toward the support, a lever for operating said ironing means arranged normally to abut said last-mentioned means, and links connecting the said lever and ironing means constructed and "means and presser-foot protruding into the path arranged to transmit'the yielding pressure of said yielding means from the lever tothe ironing means.

`17. In a seam ironing machine, a Workrsupport, a heated ironing block, seam guiding means, resilient means normally yurging said block toward said support, means for successively krelieving the pressure between saidresilient'means andsaid block and for retracting said block and connections between said block and 4said guiding means for causing the guiding means to be retracted with the block in order to facilitate the removal of work from the machine.

18. In a seam ironing machine, a workl support, an ironing means, resilient means normally urged said ironing means toward said Work support, and means for transmitting the pressure of said resilient means to said ironing means comprising a lever and links connecting said lever and ironing means constructed and arranged to relieve the pressure between the block and the resilient means Without removing the stress from the resilient means.

19. In a seam ironing machine, a work support, an ironing block, a presser foot, means for urging said block toward said support, and means including a toggle mechanism constructed and arranged to retract the block from the work support Without altering the stress in said resilient means, said presser foot having an extension arranged to engage said block as it is retracted whereby said block and presser foot are retracted simultaneously.

WILLIAM HAMANN.

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