US2668405A - Mattress winding and wrapping machine - Google Patents

Description

Feb. 9, 1954 J, W, ROLL 2,668,405

MATTRESS WINDING AND WRAPPING MACHINE Filed Jan. 29, 1951 10 SheeS-Sheet l Feb. 9, 1954 J. w. DRoLL MATTRESS WINDING AND WRAPPING MACHINE lO Sheets-Sheet 2 Filed Jan. 29, 1951 MIJ.

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Mw QNNI ww RW (DN Feb. 9, 1954 J. w. DRoLL MATTRESS WINDING AND WRAPFING MACHINE 10 Sheets-Sheet 3 Filed Jan. 29, 1951 Feb. 9, 1954 J. w. DROLL MATTRESS WINDING AND WRAPPING MACHINE l0 Sheets-Sheet 4 Filed Jan. 29, 1951 Feb. 9, 1954 J, w, DROLL 2,668,405

MATTRESS WINDING AND WRAPPING MACHINE Filed Jan. 29, 1951 10 Sheets-Sheet 5 Feb. 9, 1954 J. w. DRoLL /m'Vn-'mss WINDING AND WRAPPING MACHINE Filed Jan. 29, 1951 10 Sheets-Sheet 6 Feb. 9, 1954 J. w. DRoLl.

MATTRESS WINDING AND WRAPPING MACHINE l0 Sheets-Sheet 7 Filed Jan. 29, 1951 OOOOOOOOGOOQOO@ .N NNN N -uw w51 O Feb. 9, 1954 J. w. DRoLI.

MATTRESS WINDING AND WRAPPING MACHINE l0 Sheets-Sheet 8 Filed Jan. 29, 1951 Feb. 9, 1954 J. w. DRoLL MATTRESS WINDING AND WRAPPING MACHINE 10 Sheets-Sheet 9 Filed Jan. 29, 1951 hzfs Feb. 9, 1954 J. w. DRoLL MATTRESS WINDING AND WRAPPING MACHINE 10 Sheets-Sheet lO Filed Jan. 29, 1951 Patented Feb. 9, V1954 2,668,405 MATTRESS WINDING AND WRAPPING MACHINE Joseph W. Droll, Chicago, Ill., assignor, by mesne assignments, to Meridan Corporation, Providence, R. I., a corporation of Rhode Island Application January 29, 1951, Serial No. 208,278

12 Claims. (Cl. 53-52) The invention relates to mattress wrapping Y machines.

One object of the invention is to provide a machine for conveniently and expediously wrap- -ping mattresses.

Another object of the invention is to provide a machine of this type which includes an expansible mandrel for gripping the leading end of the web of wrapping paper, and is contractible to release the paper and the wrapped Ymattress for its endwise withdrawal from the mandrel.

Another object is to equip a mattress wrapping machine with improved mechanism for reversing the portion of the paper Wrapped around the mattress from the web from a. supply roll.

Another object is to provide improved mechanism for automatically stopping therotation of the mandrel after a predetermined number of revolutions.

Another object is to provide a mattress Wrapping machine which is eihcent, has a high capacity, and can be conveniently controlled in its operation. p

n Other objects will appear from the detailed description.

The invention consists in the novel features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings:

Fig. 1 is a perspective view of a machine embodying the invention;

Fig. 2 is a front elevation;

Fig. 3 is a longitudinal section taken on line 3 3 of Fig. 2;

Fig. 3a is a detail perspective view of the bar carried by the mandrel for indicating the extent of extra revolutions of the mandrel;

Fig. 4 is a side elevation of the portion of the machine in front of the rolls of Wrapping paper;

Fig. 5 is a section taken on line 5--5 of Fig. 4;

Fig. 6 is a longitudinal section illustrating the position of a mattress Von the `front table section at the commencementof a winding operation; Y Fig. 7 is a similarview` illustrating a mattress partially wound and wrapped; 'I y n Fig. 8 is asection taken on line 8,-8k oi Fig. 4;

. Fig. 9 is a central longitudinal section illustrating the cutter mechanism for severing a sheet Wound around the mattress from the web from a supply roll; I

Fig. 10 is a section taken on line l-IU of` Fig. 9;

Fig. 11 is a section taken on-line II-H of Fig. 9;

Fig. 12 is a transverse sectonillustrating the 2 clutch for the gearing for driving the mandrel, parts being shown on elevation;

Fig. 13 is a section taken on line |3-l3 Yof Fig. 12; y

Fig. 14 is a perspective view of the dog for holding engaged and releasing the rclutch for driving the mandrel;`

Fig. 15 is a perspective of the stud engaged by said dog;

Fig. 16 is a longitudinal section of the collapsible mandrel in its expanded position;

Fig. 17 is a transverse section taken on line ll-l'l of Fig. 16;

Fig. 18 is a section'taken on line |8-I8 of Fig. 16, the mandrel being collapsed;

Fig. 19 is a partial section taken on line |9-l9 of Fig. 18, the mandrel being shown collapsed;

Fig. 20 is a partial section taken on line 20-20 of Fig. 17, the mandrel being shown expanded in full lines;

Fig. 21 is a transverse section taken on line 2I-2l of Fig. 4; and

Fig. 22 is a diagram of the electrical connections of the circuit for controlling the cutter mechanism.

The invention is exempliedin a machine which comprises a supporting framework which includes a. pair of side frames 25, a cross frame 26, a cross frame 21 and cross bars 28 and 29, all secured together to form a rigid structure. The rear portion of the side frames 25 is provided with open ended bearings 30 for supporting the cores of a series of rolls of paper 3| for wrapping the mattresses. These rolls of paper may be of different weight or color for selective use in wrapping the mattresses. A rear table section 33 has a tube 34 xed to its front edge and said tube' is pivotally and removably supported Vin open ended bearings on the side frames 25. Table section 33 is supported in its horizontal position by legs 36 which are pivoted to said Vsection at 3'! and toggle braces 38 between said legs and the central portion of said table section. Legs 3l rest onlugs 39 on side framesV 25. Table section 33 and its supporting legs may be swung upwardly in the bearings for tube 34, or the legs 36 may be collapsed. The table section 33 may be bodily removed from the supporting frame for access to a web of paper'from one of the rolls 3l or to the mechanism beneath table section 33. A front table section 42 has fixed to its rear end a tube 43 which is pivotally confined in open ended bearings in side frames 25 and has its front end supported by'a pair of levers 44 which are connected by a shaft 45 which is pivotally supported in bearings 45 on cross frame 26.

3 The front ends of levers 44 are connected by links 46 to the under side of table section 42 and their rear ends are provided with weights 4l for urging table sections 42 against a mattress thereon and pressing it against the mandrel hereinafter described. Table sections 33 and 42 are adapted. :to dreceive ea' mattress f. and to: slida'bly support -it--while fit is being woundand wrapped, and the front table section is adapted to receive under the mattress a strip of paper from one of the rolls 3|. The webaQ-f-.fllaper irmn...the selected roll 3i is fed forwardly' by a rubber covered roll 59 which is journalled in side frames 25 and a coacting weightedfrclteriliewhiohiris slidable and rotatably supporte'dlr'in o pen#er-ideal,

bearings 52. From rollers 5G'and1-5lf'the'webof paper passes through a gapebetweenzrtherifrcnt end of rear table section 33 and the rear end of front table section 42, and onto the topefaee' of said front table section. Roller 5l may be held separated iromrdllill enricnmrenienceim threading the web betweenfthem; by.-'a::fpedal;:z55rnnga shaft which iis flulernmedpn cross vframe; 2l,

arms 59' pivoted on side frames 25 andzadapted "t0, liftzrollersflvand links-connected tofpe'dal '-55 andato lifter armsgll, nspringepressedlatch 59 pivoted on one of the sideiramesiis adapted frto "hold :pedal @555.111 :postion-'tof' hold -roller 5l raised while the web is threaded between rollers A collapsible mandrel;generallydesignatedf5b,

fis: provided oirspirallyminding the mattress and wrapping a strip of the web of: paperiaround the --mattress 1 The;:mandrelfcm'nprises;;a-v sleeve 5 i which is iournalleddnea.bearingYM-oneoneof the Y side 'iframes1:25,"` arpair; :cik innerz.peripheral A.secitionszfii-` haring iontwardlyizconnergent sides '555 pand ,a nairgof .outer peripheralesections et haringoutwardlyi convergent sides-tiel overlapping the sides B5 of the inner sections 64. ine end-pf, #sleeve Gleise-supported dnffheazcing ;62 and theopposite end of the mandrel isiiree to=permitend wisev removal oi. the wrapped mattress from the v:manda-e1.

Longitudinal treiniocenigcbars (i8YY are xedly welded to the inner faces ofsections :4

A `and longitudinal reinforcing .bars `,are :welded 5to A:the iin-ner faces ci; said: sections. 1 The r sections .-5541 are ashiftable radiallyaor Y@clamping the free lend .of a fwrapping `strip'between fthe overlapping -nnd portionsnf thesides .li-5- and elzof the mandrel -lsections by va stem 14 which :is slidelbleuina sleeve 1 El and is connected bysalpainofvparallel :linkages 7toinnefpair of bars-138. aEach-icf-ffsinglelinkages e comprises afpair l.of links rliand .i1-8 :having their :inner endsuconnected :by-:1a ypivotV pin? 'l1-.ato :istem `the barsz. Each inner section-:254 :is connected `fto 'the-stem 14 by-.afpahl :of paralleli linkages,

teach of Whichrincludesraipainofflinks Jil', having v:end ofthe wrappingpaper. "The, mandrlel'is conmractibleeto reduceits diameteitland permitiendwise :removal of wrapped mattress Ifroxnfthemanidrel and :to :spread apart fthe convergent side :of fthe finner` and outer y Sections to lrelease* 'the end aidrel are .eonned against :substantial "long-itudinal movement -by links' iillfwhiclh.` are? pivoted` at 1.81 .to a collar :82 whichis'lxedto'sleevefl and x-atz83vto a reinforcing bari-158. Whenfthe mandrel is expanded, 'the overlapping convergent `sides/of fic the inner and outer sections of the mandrel are adapted to grip one end of the paper strip between them, and when the inner sections are collapsed, the end of the strip can be inserted between the contiguous sides of an inner and outer section. When the stem 14 is in the position 'illustrated inf'Fi-gs. lfand theff toggle links zwillbe collapsedffand holdfthe inner l'sections 65 in position to permit insertion of the end of a :,strip of paper between the inner and outer ..,sections,of.the mandrel. When the stem l4 is the 'expanded-position illustrated in Fig. 17, "the end of the paper strip will be gripped between theioyerlapiingffsides of an inner and an outer 1sectionfandczsaidcsections will be locked by the toggle links to :retain said end in the mandrel, sothatupmlrntation of the mandrel the paper and mattress willbe spirally wound around the `4frnanclrel as a core. When the mandrel is collapsed after a mattress has been wrapped, the diameter of ,themandrelswill be reduced to permit the free endwise withdrawal of the mattress from vthe mandrel-.and simultaneously release .the inner end of cthe-lwrapper.

The stem 14 of the mandrel is slidablefinsleeve .f 6 l; 4ier operating the fmandrel -.,sections into:A ex- A pandedland contracted :positions by a. `device which .comprises -a .two -arm `roclnn-lever 12,8 CE-tig- Y 2)l is centrally; liulcrumed Yoncross .frame f igffafpair of vpedals :l2 IY .and :l22-.operatiye1yconnected lby links fto thee/nds fof.the farms Y,on the -rcckerelefver respectively, a linklz lplanted to Vone armfof lever 2G-and tothe-lower tendete. `leverr 124 which is iulcrumed .at J 2,5. on one fof the side frames 2,5 anda-collar- -lr2lwhich islcon .nested tothe ,outerend of stem J4. `I'hecollar i .122 `is connected lao-stem 2A Y,bysscrew .studs `i253 --wh-ich extendfinto agroovein-said stem for Slidably shifting and permitting rotation-@-Sad stem. Whenpedal 221 ,is `.depressed it .will rock Y,lever 20 to operateilinkV I2-lever Mend collar A27-and =slideestem- J4 outwardly rin sleeve 6l into the position shown in Figs. 18 19. AThe 'inner,:mandrel sections-5 will-thembe separated inwardly from the outer sections 6'! ,so v,thatlhe :end of: the;fstripfaof--wrapping paper. .can '.be, l.inserted-between convergent isides of..an.inner `and an outer rsection as shownin Fig. `18. A. .stop .pin limits the inward movement; ofesectiont ,Whenfpedal 42- 2v is depressed, stem J4 willbe shifted inwardly in sleevefll` toexpandthe toggle linkages 15 and 16 and `torcetheinnersec-tions :.65 into position l'to `.clamp `the ,end ofthe .wrapping strip against one of the outer .sections 6l, and grip the strip-1 and also to expand .themandrlelhas illustratedl ,ini-Fig. :17 so. that when .the mandrel is rotated, VVAtlf-legend t01E-the jstrip vof .paper :and the `Amattress will Vbe spirally-,wound around the mandrel. l The links f8i!betweenicollar. ,82, and the renforcingbars vori-the mandrel sectionshold .fsaid :sections against substantial v longitudinal movementrelatively Vvtosleeve l The'rmandrel :isfselectively `driven by gearing :operated by ,anelectricmotor .which :is: mounted on a bracket 9 4 ,oncne oithesideframes 25,

`ior winding afmattress V4tin-:reen and simulmember 98 is held normally disengaged. from member 99 by a spring I 02 and is manually shiftable into driving relation with member 99 by a lever |04 which is fulcrumed at |05 on bracket 9|, a link |06 which is pivoted to the lower end of lever |04, a double-arm rocker lever |01 which is fulcrumed at |08 on a bracket fixed to cross frame 26, and a pedal |09 which is connected by a link I 0 to an arm on rocker lever |01 for shifting link |06 and lever |04 to engage coupling members 98 and 99 to drive pinion |00, gear. I 0I and sleeve 6| of the mandrel. This coupling is automatically controlled to stop the mandrel after a predetermined number of revolutions to wind the mattress around the mandrel and Wrap the strip of paper around the mattress. For this purpose, a latch |I0 is pivoted at I II to the upper end of lever |04 and is urged upwardly by a spring II2. A tooth |I3 on latch IIO is adapted to slip into a notch I| 4 in a stud I|5 which is fixed to one of the side frames 25. When the clutch members 98 and 99 are disengaged, tooth ||3 engages the underside of stud I|5 and when said members are coupled said tooth snaps into notch ||4 and holds lever |04 to hold said members in coupled relation. The latch IIO is automatically released at the end of a predetermined number of revolutions of the mandrel by a pinion I|1 Which rotates with gear |0|, a gear |I8 meshing with gear |0| and a striker bar I|9 which is adjustably fixed to one side of gear I8 and is adapted to engage latch |I0 to disengage tooth |I3 from notch |I4 against the force of spring |I2 at the end of each revolution of gear |I8.

The machine comprises mechanism for severing the trailing end of the stripy of paper behind the mandrel and at the gap between the front section 42 and the rear section 33 of the mattress-supporting table. This mechanism includes a rotary cutter disk |35 which is adapted to travel transversely across the web of paper under a cross bar |31 and at the front edge of an inclined bed |36 over which the web of paper passes from the rollers 50 and 5| to the front table section 42. Disk |35 is `iournalled on a stud |38 which is supported in a carriage |39 which is movable transversely in the frame and is provided with rollers |40. Carriage |39 extends between a pair of spaced channel tracks |4I in which rollers |40 are adapted to travel. Tracks |4I extend through the side frames and have their ends fixedly secured in brackets |42 which are fixed to the outer sides of said frames. A sprocket wheel |43 is fixed to rotate disk and meshes with a sprocket chain |44 which is held in engagement with sprocket wheel |43 by a track |45 which is fixed to carriage |39. Each end of chain |44 is connected to a bracket |42 on a side frame 25 by/means of a block I 41 on a screw stud |48 which extends through a lug |49 on bracket |42 and is provided with a nut |50 for taking up the slack in or adjusting chain |44. As carriage |39I travels along tracks I4| transversely between side frames 25, the stationary chain |44 will rotate sprocket Wheel |43 and disk |35 will rotate through the web of paper and sever it at the front edge of bed |36.

Reciprocating strokes are impartedto the cutter disk |35 and carriage |39 by a reversible electric motor |54, an endless sprocket chain which extends around and between a pair of sprocket wheels |56 which are journalled in bracket |42, a shaft |58 to which one of the sprocket wheels |56 is fixed, and a worm gear |58'v which' is xed to shaft |58 and is driven by a Worin wheel |60 on the shaft of motor |54. 'I'he starting of motor |54y is selectively controlled by an electric drum-type switch |62 and its stopping is automatically controlled for strokes of predetermined length of the cutter disk and its carriage, by a pair of limit. switches |63 and |64 which are mounted on a pair of angle rails I 65 xed to the side frames 25. The actuating arm of limit switch |6I is shifted to open the circuit for motor I 54 connected thereto by a spring-pressed cam arm or shoe |61 mounted on rails I 65 and adapted to be depressed by the cutter carriage |39 after the cutter has completed a transverse cut of the web of paper in one direction. The actuating arm of limit switch |64 is shifted to open the circuit for motor |54 by a spring-pressed cam arm or shoe |68 mounted on rails I 65-and adapted to be depressed by the carriage |39 after the cutter |35 has completed, a transverse cut of the web in the opposite direction.

Feed roll 50 is adapted to be selectively driven to selectively feed the web of paper forwardly after a strip has been wrapped around the mattress and severed from the web, by a sprocket chain |1| between a sprocket wheel |10 fixed to drive roll 50 and a sprocket wheel |12 loosely mounted on shaft and adapted to be' coupled by slidable clutch member 98 to shaft 95 which is adapted to be driven from motor 90. A pedal |14 is connected by a link to an arm of rocker |01 and when said pedal is depressed it will shift link |06 and lever |04 to couple clutch member 98 and sprocket Wheel I 12 for driving feed roll 50 from shaft 95. A hood |15 is-removably secured to the supporting frame for enclosing the gearing on one side of the frame. Y

A roll of adhesive tape |16 is mounted in a dispensing device |11 which is mounted on the hood |15 and positioned so that a strip of the tape may be pulled from the roll and energized and then applied across the edge of the sheet wrapped around the mattress.

The operation of the machine will be as follows: The end of the web of paper from the selected roll 3| is placed between the feed rolls 56 and 5|. The table section 33 may be swung upwardly for access to said rolls. Pedal |55 will be depressed to shift link 58 and arm 51 to raise roll 50 above roll 5 I, and said pedal may be secured by latch 59 to hold roll 5| raised While the leading end of the paper is placed between rolls 5i) and 5|. The latch 59 is then shifted to release pedal |55 so that roll 5| will engage the paper. Next the operator will depress pedal |14 to engage clutch member 98 and sprocket wheel I 12 so that chain I1I will be driven'by motor |54 andwill drive sprocket wheel I 10 and feed roll 50 until the web of paperis advanced to overlap the table section 42 and its leading end can be connected to the mandrel. The operator will then depress pedal I 09 to shift rocker I 01 into its neutral position and uncouple clutch member 98 from sprocket wheel I 12 to stop the advance of the web of paper when theV leading'end isy in the position desired. Next, a mattress will be moved fcrwardly onto the paper onV table section 42 and over table section 33 with its leading end adjacent the collapsed mandrel. The leading end of the paper will then be inserted between one of the overlapping portions of contiguous inne-r and outer mandrel sections which are then spaced apart. Next, the operator will depress pedal |22 to shift link |23 and lever |24 and slide stem 14 inwardly in sleeve 6I. The linkages between said 7 niemand rtheinneraandnnter mandrelrsectione willebenperated-to.oensediwo,icoactingzseotionsto erin ztnezleadineeend inf: tnerinaper and tllezmann drelfrwillzibe-'lexpanded :for,.eneegementwitn- -the .animent-mattress foperationo stem `'ai `willioperatethexlnlrageszto; diierentiallyshift :the :innemend outer..-sectinns -orilosingthe gapzbetneen tnem v when :they are expanded and. .grip- :ping the fpaper. :and-increasing ,the diameter vof 'the :mandrel ltto :engage z the'funderlying frontend o'thernattress sumciently `Lto canse -the mattress .to perpressed.upwardlyiagainst the mandrel Yby the weighted vtable V section .d2 during `the rotation .pf `theirmal.ldrel. .z-Next,.ftl1e-,operator .will depress nejdal fihil toshiitilink m5, :lever leand elutoh member-f 9.3,? intozengaeementf-.with clutohm-ember 88 :onvpi-nion' H10 :While :the A'motor 15d is running. The 'mand-rel .willi-then be rotated from olntohxnember-#SQ byzpinion Lilli; and gear i'ii which f skeyed :tof'the sleeve 4|| of 'the mandrel. When lever |04 is shiied'to engagenluteh memibersf andfQB,--it;willmovezdog 2| il! inwardly so that :tooth 'H3 lonfsaid xdog snaps into -notoh l1 :i in Stud Handgthe clutch memberlivill beheld engaged withfclutch memper'gsagainst :the force ef .spring 13112 #until the mandrel has been rotated afsufficient numbered-revolutions to complet-e a minding-.and wrapping-:operation :The .striker {l1-l 9 on the gear Jil 8 f When-it .completes a 1revolu itioneand afterfeaehrrwnding@operation nas 4losen completed-will ,engageidog d I- and Arelease it `from stud v1`|5:.andfp ermit ;spr ing 1 !)2 to disengage cluphmembersf @riddim and stop the mandrel. During Vthis:predeterrnined rotation of the man- ;firelfathe V:nlattressf ancl .paper will be spirally .wound aronnd-fthmmandrel nntiltne mattress has been completely Wrapped. A lilibenitlle mandrel stops, thelfexilllrbe a trailing portion of paper of snincientvlengthroverlyingfztablesection 42 V.betweellthelirtiing'end of the'imattress and the transverse':lineiofotranelp: the cutter-disk fforoverlapping and enclosingzzthe trailing endof the mattress. Next, the cirttendisk 'isqoperated across the paperfto sever itffrom the web. Next, .theffree trailing portion ofthe sheetis folded to overlap the outerfendgof the-ispirally wound mattress and adhesively secured `to seal the paper around ythe mattress 'by a'strip of adhesive tape drawn fromthe --roll H6 and secured a-cross the `jointfbettveen the end andan overlapped portion ofjthe Wrapper. AFor acutting operation of the web, the operator Will'shigft--switeh |52 into position to .closeiaacircuit'and start motor 154m one direction v-wliile the cutter carriage |39 is positiene@outwardlyv of one side ofthe web of paper. rlille endless @chain ldriven by motor ifi lwill shift the carriage |39 and the stationary chain #d4-,will rotate the cutter disk |35 as it travels across the-Webeofpaper. When :the carriage |39 engages the camorfarm |67, said arm will be de pressed `and open .the limit switch |63 vand Ythe circuit for the motor to stop the motor and cutter-carriage after the web vllas `been severed. At Athe end Yof vthe next wrapping operation, switch 1|.E2fwill be shiftedto close `a circuit for operating the motor |54 in "the opposite direction. This circuit will be through theglimit switch v|64 so themotor will operate the carriage |39 to shift the cutter across the web ofthe paper in the opposite directionuntil the-carriage opens the limit switch-164. Injthis manner, the cutter is alternately operated in opposite directions and automatically'stopped at'the end of .each cutting operation.

:After-.the -fnmttress has been wrapped and 'the Cri B l fwrapner ,".llas-:fheen sealed--; around itne mattress. -thennerator twill depress pedal |22 to 'shift dink i23-;and lever 245130 move the stemM outwardly in sleeve-1.61 .ofthe mandrel. `Stem ,M will operate the linkages ,Jmetween itfand the Vinner and outer "mandrelseotions to-contract the :mandrel and release thennerendioi the paper. YDuring ithis operation, the mandrel sections will be contracted so that the Wrapped v mattress can be removed lendwise from the:mandrel after' the wrapped mattressfhas Ibeen vremoved from the mandrel. The projecting portions ni the wrapper, which Yis of greater Width than the mattress, are folded ,andsealed around the-ends of ,the'mattress In :someinstanoesrit-is desirable .to wrapmore than predetermined'-rconvolutions .around the -spirally-wound -fmattress For this purpose-the pedali will be depressedqby the operator ,t0 vsufiioient distance toyengage clutch memberse andas!! 4without locking doe If :into thefnotch H4 in the .Stud H5. .Said pedalslrfill .beheld ldepressed untilthe added cenvolutions of paper have been Wrappedaround tnemattress andtnen released. A .bar 1littis .slidably mounted-on the Ainside of one of themandrel sections B and ,provided Wit-hafradialgpin' |13. WhenJo-ar H2 vis pulled outwardly, .etlaegpin |123 Willy-be vvisible ,as :the mandrel rotates tof-indignato to the operator the additional revolutions of the,=mandrel and the vmandrel will be stopped when desired.

The inventionl-isfnot .to z-befunderstood 4asilimited to ltine `details described, ,since these maya-be Vmodified within theaSoQPe-of 'the appended IClaims without departing :from -the spirit y and seppe of the invention.

`Having thus described 'my finvention, what I claim as new-and A.desire-fno v,secure by Letteis Patent :is:

l. A mattress wrapping-machine comprisingz a'tableror supporting a'matt-ress Iwith an-under lying web onpaper;airotatablemandrel over the table and ,including collapsible and `expansible lsections ,having overlapping peripheral members Vfor gripping the .web -hetween them; Ymechanism Vfor rotating the mandrel :to `Wind 'the mattress .thereon-and :wrap :the paper aronndf-the mattress; and. ,means -for expanding the 1- mandrel and gripping .the-end of the Web-of paperheftweenoverlapping members of 'the sect-ions and contracting. l.the mandrel to reduce its diameter for releasing the mattress'and-separatingthe members from one-:another to release the paper, the mandrel being-:unsupported at one of :its ends for endwise Yremoval-of the wrapped -mattress.

2. A mattress wrapping machine comprising: a table for supporting-a mattress -Witli an underlyingt WebV of fpaner; `a rotatable-mandrel over the table and including l collapsible and expansible sections thawing `overlaiinping 'peripheral members for gripping 'the web "between them, mechanism Vfor rotating the mandrel to Wind the mattress thereon and Wrap the-paper around themattress; means for urging the tableV against the mattressy towpress it against the mandrel; andnleans for expanding the AInandreland grip ping the endfof the Web'of paper between overlapping members of the sections and ,contractingA --the Y frnandrel to reduce -its diameter for releasing the -mattress and separating the members' fron one .another Vto release the paper; 4the mandrel beingeunsupported at one of im ends for endwise vremoval y .of -the wrapped matti-ess,

3. AA mattress wrapping mannine comprising; atable for-:snppnrtnefa mattressnitnannnderflying web of paper; a rotatablesleeve; a mandrel carried by the sleeve over the table and including collapsible and expansible sections having overlapping peripheral members for gripping the Web between them, mechanism for rotating the sleeve and mandrel to wind the mattress on the mandrel andwrap the paper around the mattress; a stem slidably mounted in the sleeve; and means operable by the stem for expanding the mandrel and gripping the end of the web of paper between overlapping members of the sections andY contracting the mandrel to reduce its diameter for releasing the mattress and separating the members from one another to release the paper, the mandrel being .unsupported at one of its ends for endwise removal of the wrapped mattress. 1

4. A mattress wrapping machine comprising: a table for supporting a mattress with an underlying web of paper; a rotatable sleeve; a rotatable mandrel carried by the sleeve over the table and including collapsible and expansible sections having overlapping peripheral members for gripping the web between them, mechanism for rotating the sleeve and mandrelto wind the mattress on the mandrel and wrap the paper around the mattress; a stem slidable in the sleeve; and toggle links operable by the sleeve for expanding the mandrel and gripping the end of the web of paper between overlapping members of the sections and contracting the mandrel to reduce its diameter for releasing the mattress and separating the members from one another to release the paper, the mandrel being unsupported at one of its ends for endwise removal of the wrapped mattress.

5. A mattress wrapping machine comprising: a table for supporting a. mattress with an underlying web of paper; a rotatable sleeve; a rotatable mandrel over the table and including collapsible and eXpansible pairs of oppositely disposed sections having overlapping peripheral members for gripping the web between them, mechanism for rotating the sleeve and mandrel to wind the mattress thereon and wrap the paper around the mattress; and diierential toggle links between the pairs of oppositely disposed members and the stem for expanding the mandrel and gripping the end of the web of paper between overlapping members of the sections yand contracting the mandrel to reduce its diameter for releasing the mattress and separating the members from one another to release the paper, the mandrel being unsupported at one of its ends for removal of the wrapped mattress.

6. A mattress wrapping machine comprising: a frame; front and rear mattress-supporting table sections with `a gap therebetween; a pair of rolls under the rear section for feeding a web of paper through the gap and onto the front section; the rear section being supported to swing vertically in the frame to provide access to the feed rolls; means for holding one of the rolls separated; an expansible and contractible mandrel over the front table section; mechanism including a motor and a clutch for rotating the mandrel for winding the mattress thereon and wrapping the web of paper around the mattress; a pedal on the front of the frame for shifting the clutch; means for expanding the mandrel to grip the paper and for contracting the mandrel to release J(he mattress including pedals at the front of the frame; pedals on the front of the machine for operating the means for collapsing and contracting the mandrel, and means for yieldingly urging the front table section to press the mattress against the mandrel. y

7. A mattress wrapping machine comprising: a frame; front and rear mattress-supporting table sections with a gaptherebetween.; rolls under the rear section for feedingV a web of paper through the gap and onto the front section; motor-driven gearing for driving saidrolls and including a clutch; an expansible and controllable mandrel over the front-table section; mechanism including a motor and a clutch for rotating the mandrel for winding the mattress thereon and wrapping the web of paper around the mattress; pedals on theviront of the frame for controlling the clutches for driving the feed rolls and -the mandrel respectively; means for expanding the mandrel to grip the paper and for contracting the mandrel to release the mattress including pedals at the front of the frame; and means for yieldingly urging the front table section to press the mattress against the mandrel.

8. A mattress wrapping machine comprising: a frame, front and rear mattress-supporting table sections with a gap therebetween; rolls under the rear section for feeding a web ofl paper through the gap and onto the front section; mechanism including ya clutch for driving the feed rolls; an expansible and contractible mandrel over the front table section; mechanism for rotating the mandrel for winding the mattress thereon and wrapping the web of Ipaper around the mattress; pedals at the front of the frame for controlling the clutches, respectively; and means for expanding the mandrel Ato grip the paper and for contracting the mandrel to release the mattress including pedals at the front of the frame.

9. In a mattress wrapping machine, a frame, a stationary generally horizontal rear table section on said frame for slidably supporting the trailing portion of the mattress, a front table section movably mounted on said frame for supporting the leading portion of the mattress, a mandrel journaled on said frame to extend across said front table section, means for moving said table section upwardly to move the front portion of the mattress toward said mandrel, said front and rear table sections having |a gap therebetween through which extends a web of wrapping paper, means for guiding the paper from under the rear table section through the gap between said table sections and onto said front table section, said mandrel being expansible and contractible and being provided with means lfor gripping the leading edge of the paper, power means for rotating said mandrel to wind the paper and the mattress around said mandrel, and means for expanding and contracting said mandrel and to grip and release the paper, and to release the rolled mattress therefrom.

10. In a mattress wrapping machine, a frame, a stationary rear table mounted on said frame for slidably supporting the trailing portion of the mattress to be wrapped, ya front table section pivotallymounted on said frame adjacent its rear end and slidably supporting the leading portion of the mattress, a mandrel rotatably journaled on said frame above said front table section, means for moving the forward end of said front tabl-e section upwardly to force the front portion of the mattress toward said mandrel, said front and rear table sections having a gap therebetween through which a web of wrapping paper is adapted to extend, means for guiding the paper from under the rear section through the gap and

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