US1460399A - Art of upholstery - Google Patents

Description

F. H. BANCROFT ART oF UPHoLsTERY .mily 3, 1923.

5 Sheets-Shet l Z W wmww M .i wait z, Ww'w o I W w' M W Filed May 4 Jully 3, 1923.

` 11,4%.399 F. H.. BANcRoFT ART OF UPHOLSTERY FiledMay 4 1022 5 Sheets-Sheet 2 za) ww Jufiy. 3, 11923.

F. H. BANcRpr-'T ART OF' UPHOLSTERY Filed May 4, -1922 5 Sheets-Sheet 5 'Jufly 3, 1923.

F. H. BANCROFT ART OF' UPHOLSTERY 1922 5 Sheets-Sheet 4 Filed May 4 July 3, 1923.

' FA H. BANcRoF-'r ART lOF' UPHOLSTERY Filed May 4, 1922 5 Sheets-Sheet 5 'Patented July 3, 1923.

NiTED STATES oFFicE,

FRANK H. BANcnor'r, or GABDNER, Massacnusnr'rs, Assreivon To P. DERBY a co,

INC., or GAnDNnn, raAssAcHUsn'r'rs, A CORPORATION or MAssAcHUsnm'rs.

ART or UPHoLsTEnY.

Application fiiea May 4, 1822. serial Na. 558,895.

To aZZ 'whom t may conccrnl Be it known that I, FRANK H. BANcnoF'r, a citizen of the United States of America, and resident of Gardner, in the county of vWorcester and State of Massachusetts, have invented new and useful lmprovements in the Art of Upholstery, of which the followin is a specification.

his invention relates to thegart of upholstery and includes a method and apparatus for carrying the method into effect. r.[:he particular branch of the art to which the mvention is especially apnlicable includes the making of box seats and similar devices in which a cover usually of cloth, felt, leather or leather substitute is to be tightly and smoothly applied and made fast to a frame, such as a seat bottom. Padding or stuffing in sheet or loose form is ordinarily inserted between this cover and the form, and this padding must be uniformly compressed and the cover tightly stretched thereover. With the cover held in a tightly stretched condition the marginal portions thereof are nailed or otherwise made fast to the under side of the bottom.

The ordinary hand method of upholstering seats of this kind is laborious in the extreme as Well as time consuming, since the cover must be stretched and the padding compressed manuallyand manually held in place while the cover is madefast to the seat frame. In other words the upholsterer must be continually laying' his hammer aside in order1 to carry out the coinpressing and stretching phase of the operation and must hold the parts in conipressed and stretched condition while he nails the cover to the seat frame. i

Objects of the invention are to increasethe speed and reduce the labor of upholstering box seats and the like, to att-ain the above object by mechanically stretching the cover and compr'essing' the padding, to maintain mechanically the cover and padding in stretched and compressed condition, respectively, while the cover is made fast to the chair bottom, to facilitate the fastening of the cover to the bottom by providing for the rotation of the parts while in stretched and compressed condition, and in general to expedite the manufacture of box seats and the like and to improve the method of manufacture thereof.

The inventioncomprises the method of upholstering chair seats Vcharacterized by `at-` taching the seat cover' to a die, forcing the seat into the die (or the die over the seat) to stretch the cover, and then fastening the cover to` the seat while the formeris stretched. If padding is inserted between' the cover and the seat, lthe method further includes compressing the padding 'while the cover is being stretched. The invention furthercomp'rises apparatus for carrying the `abovezmethod into effect, one concrete embodiment of such apparatus being` show-n in the accompanying drawings, by way of illustration, in which- Fig. 1 is a side elevation; i

F ig. 2 is a Vertical section;

Fig.` 3 is a horizontalisection on the line F ig. 4 is an enlarged section'al'view of the table with the clamping members .in retract-V `pleted chair seat; and v Fig; 12 is a rear elevation thereof.

For the purpose of illustrating my invention I have shown in the accompanying drawings an embodiment thereof in which the steps of compressing the padding and istretching the cover over the seat frame or bottom is automatically performed and in A z which the operator merelysupplies the material to the apparatus, controls its operation, andnails the marginal portion of the cover to the bot-tom of the chair seat. The apparatus is mounted upon a frame Vcompris'ing an upright I-beam 13 suitably supported upon a base 14 to which it is connected and braced by angle brackets 15. Fast upon the upright in spaced relation are castings 17, 18, 19 and 20. `These castingsare in face engagenient with one web of the I-beam and are' fastened thereto by means of elongate bolts 21 extending'through both webs thereof and retained in lace by nuts 22. The two lower castings l a-nd18/ support for rotat'ion a table-23`having upon its npper face a block or plate 24 which serves as a key, for maintaining a suitable die 25 in proper andfixediposition. upon the top of the table, the block fitting in a slot 26 in the die (Fig. 9).

The die, in the present instance quadrllateral in form and shown inplan in Fig. 9, comprises a base portion 27 in which slot 26 is provided an'dperipheral' members28 upon the base. The'sepe'ripheral members form a rim, theupper surface of which is provided` with strips 29 ofC flexible material, preferably rubber. These strips areset in grooves inthe top of therim as indicated inF igsf 4fandf` 51 and extend slightly above the: upperfaceA of the peripheral members as shown. These peripheral members are inwa'rdly andf downwardly beveled, forming inclined`y surfaces 30. These surfaces are: likewise grooved and provided with strips 31' of resilient material set therein. In usethe seat cover' isadapted to be placed across the die, being-held at the corners by suitable fastening members such as pins 32 preparatory. to stretching the cover over the seat frame. The margin'al portions of the cover are` tightly clampedY upon strips 29. To prevent'sl'ipping' ofvthe-cover, the upper surface of these strips is preferably roughened as indicatedin Fig. 9.

To clamp the cover upon the rim of the die al` plfurality of clamping members 33 are provided about the periphery of table 23.1 These membersf arein the form of castings, one of which is shown in perspectivein F'ig; S'and comprises` parallelly disposed members 34 generally U-shaped in form connected* at one end by an integral bridgev piece 35', the opposite ends having aligned pivot openings 36`and cam projections 37. Upon the' top of bridge piece35 a plate 38 is fastened as by bolts or screws (not shown) extending through openings bridge piece 35 and have attached to the under side thereof clamping bars'40 of any suitablematerial, preferably wood. These clamping bars are Offa size' substantially corresponding in length and width to strips 29 on the rim of the die. Clamping members 33= are hinged by pivots extending through openings'36 to links 41, inl turn pivoted tot'he free endsof anpgular bracki ets 42 adjustably attached to the underside case one to each side. These projections 44 are provided with elongatehorizontally directed T-shaped slots 45, in the upper portion of which slots the central squared portion 46 of member 43 is adapted to slide. The right angular threaded bolt 47' extends through the lower portion of the slot, and clamps br'acket 42 to the projection 44 by means of a nut 48. Member 43 has an upwardly and inwardlyzdisposed engaging end 49, the parts being so proportioned that when the engaging end contacts the adjacent portion of the die, bracket 42 is disposed to so position clamping member 33 that clampingbar 40 will cooperate with strip 29' when the clamping memberiis in operative position.

Braekets 42 have a recessor opening `50 across which a pin 51 eXtends, serving'v asy the ancho-rage for a-coil springi52fa's`tened at. its opposite end to a pin` 53iwhich connects the tw'o links 41. providedfor each of the clamping members 33. vBy the provision of this spring, links 41 are normally held in an` upwardly inclinedY position as` indicated in Fig. 4, disposing clampingV members 33 outwardly inclined from the' table 23 to provide easy accesstothe die in arranginr the `materialsthereon in upholsterlngV seats Means, are. provided for simultaneously' swlnging all of the clamping'members 33- inw-ardly above the rimof the die and then directly downward to securelyl clam'p the marglnal edges ofz the cover;

within the hollow shaft 55 upon'which-table with'two pins-.56 and 5.7 vertically spa'ced and transversely disposed'` relative to the path of. movement of therod and anglii? larly` disposed relative to each other. These pins eXtend through elon'gate slots in hollow shaft 55 crossed plates 58 andi59 (Fig. 6'). plates158 are straight. Pl'ates 59, two in number, are centrally ldepressedas indicated-:z in F1gz'2 to receive plates58 so that the ends of all plates are disposed in the same plane. Plates 58 areslotted at the ends to receive therebetween brackets 42.. free ends of all the platesextend over: a-nd` beyond links 41 for. opcrative contact with the cams 37 on clamping members 33..

lVhen'rod' 54 is depressed pin 57 operates.h

to draw plates 58 and 59 downwardly so that clamping members 33 move from the`v position shown iniFig. 4, first to a positionA showniin dotted line in. Fig, 'and'z then to the position shown infull lines in :F ig. 5. In the first 1r'io' .eme1,;t;of-` clarrrp'ing members 33, the latter swing on. the pivotsextending through openings 36 and in the secondior directly downwardly movement they. pivot.

The meansv for accomplishing'th'is preferably comprises' a reciprocatlng rod 54 axially disposedf and receive therebetween.

Upper .The-

on the connection of links r41 with brackets 42.

The support for table 28 comprises the hollow shaft and the fluid pressure cylinder 60. The cylinder has a lower casting 61, the lower end of which rests upon ball bearings 62 and is rotatably mounted in bearing 63 in casting 17. Hollow shaft 55 which is fast upon both cylinder 60 and table 23 is mounted for rotation in bearing 64 in casting 18 so that the entire assembly i of table, clamping mechanism and means for Operating the clamping mechanism rotates as a unit. Rod 54 as shown in Fig. 2 is fast to a piston 65 within cylinder 60,'a spring 66 being providedrto normally retain the piston in the upper part of the cylinder-and to assist springs 52 in normally retaining the clamping members 33 in their retracted or inoperative position shown in Fig. 4.

The fiuid pressure connection to the cylinder 60 comprises a pipe 67 (Fig. 1) extending from any suitable pressure source (not shown) and looped over the table in convenient position forv the operator to manipulate a control valve 68 therefor' and then downwardly through pipe 69 to a position directly beneath the cylinder, whence it leads upwardly by wa pipe 70 to connect with an aXial reeess 71 in casting 61 of the cylinder, thcnce laterally out through a pipe 72 which leads upwardly into the top of the cylinder head at 73. i

Disposed above the table in axial line with the shafts supporting the former is the mechanism for applying pressure downwardly upon the seat to stretch the cover and compress the padding. This mechanism comprises a fluid pressure cylinder 74.in all respects similar to cylinder 60 and supported by ('astings 19 and 20. To the piston 75 of the cylinder is attached a. plunger 76 normally held in upwardly retracted position by a spring 77 which bears against the pi'ston on the one hand and the cylinder casting on the other hand. The lower end of the plunger 76 is provided with a ball. bearing device 78, the purpose of which will be later described. to cylinder 74 by means of a duct or pipe 79 provided with a control valve 80 in position to be readily manipulatedby the op-` erator.

A follower 81 is mounted for swinging movement beneath plunger 76. This follower has a sliding pivotal connection with an arm 82 by means of a bolt and nut con-` nection 83 (Fig. 5), the nut fitting in a counter-bored slot 84 in the arm. rm 82 is clamped to rod 85 by a sleeve 86, the rod being supported for rotation by brackets 87 fastion I-beam 13. As shown v`in Fig. 1 sleeve 86 is normally disposed in spaced relation to upper bracket `87 bythe provision of a coil spring 88 surrounding rod 85.

Fluid under pressure is conducted The operation of the device is as follows: 1

The operator vplaces upon table 28 a die 25 of the type described, of the proper size to form the desired size and shape of the box or slip seat, with block 24 on the table fitting in slot 26 in the die. A seat cover 90, Figs. 3 and 5, is then spread smoothly spring 66, the pin 56 on rod 54 attached tO` j the piston drawing plates 58 and 59 downwardly to moveiclamping brackets `83'first inwardly and Vthen downwardly as previously described.v The marginal edges of the i cover'are accordingly tightly clamped by clamping bars 40 upon the resilie'nt strips 20` which have a roughened surface and hence secu'rely hold the cover against slippin'g.

Upon the'top of cover 90 padding 91, Fig.` 5, is placed, this padding being either in sheet ``form or loose and evenly applied overv the central portion of lvlthe cover' as desired.` Upon the padding is placed the seat-frame or bottom '92, Figs.'8and 5. 'The operator now swingsV follower 81 above the table, spring 88 holding it sufficiently elevated to clear the seat bottom. The follower 81 is properly centered with the bolt and nut connection 88is directly beneath the roller bearingi78 upon plunger 76. Valve '80 is then opened to admit fiuid under pressure tocylinder 74 to depress piston 75 which through plunger 76 andbearing 78 acts upon follower' 81 to force the seat frame 92 downwardly into the die, thus stretching the cover 90 and i cognpressing the paddingfll. Fig. 5 shows the seat frame driven home under the pressure applied to follower 81, spring 88 per-' mittingthe downwardmovement of the fol-` .i

lower.

The operator now turns valve 68 to re-` lease the pressure in piston 60 whereupon clamping members 33 under the impulse of Springs 52 acting on links 41 and of spring 66 acting upon piston 65 are forced first upwardly and then outwardly releasing the marginal portions of the cover. V The operator nowfolds these marginal portions of the cover overupon the adjacent'portions of the seat frame and nails them in place, ro-

tating table 28 as desired to bring the work into convenient position,A ball bearing 78 preventing plunger 76 from interfering with the rotative moveinent. lVhenthe cover has been nailed entirely around its periphlin I'the upper cylinder 74 by operating valve eryto the Chair `bottom pressure is relieved:` i

the follower 81 rise's' underjlthe impulse of spring 88. The follower is then movedto one side whereupon the |completed chair seat maybe removed. The completedchair seat is shown in bottom plan viewl in Fig. 10, portions of cover 90 being slitted adjacent the corners as indicated at 95 to form a smooth .attachment and avoid folds and creases. Thecomplete chair seat is further shown in` side elevation and in rear elevation in Figs. 11 and 12 respectively.

The chanvino' of the die when chair seats` of a `different size are to be made is a simple matter by reasonof' the provision of the combined gage and fastening mechanism 43. By releasing nuts 48 the members'43 may be moved outwardly slightly together with brackets 42 to release the die then on the table whereupon the same may be removed and the new one adjusted in place` with cen. tering block 24 in slot 26. Members 43 will now be forced inwardly toward the dieuntil the `gage end 49 contacts the die whereupon the nuts 48 are again tightened to securely fix the clamp supporting 'brackets 42 in place;l These brackets are now properly positioned, so that when clamping members 38 are ;forced downwardly upon the die the clamping bars 40 willi` register with the strips 29.

In the form` shown relatively large fiuid pressure rams are used, those shown being six and' eight inches in diameter respectively, and a pressure of approximatel)7 ninety pounds to the square inch is employed. These dimensionsl and this pressure are found adequateto hold the marginal portions of the cover in place, to insure'proper stretching of. the cover, and to properly and smoothly compress the padding between the seat and' the cover so that an upholstered seat is produced equal, if not superior, inV all respects to the best work. done by hand. The savingv in time over the hand method is at least 50% and may become greater as the operator becomes highly skilled in the use of the machine. In addition .the labor of Operating the machine is relatively slight and is much lessiwearing and exhausting upon the operator than the hand method.

i and the like .comprising a support adapted to receive thereon removable and. interchangeable dies, means on said support for maintainlng adie agalnst. movement relativeto saidsupport, and. means on said supu a bracket lmounted on said support, arms I nasa-aaa.

support, and-means for simul'taneously actu-V ating said bars to clampia! cover upon the upper face'of said die.

5. Apparatus for upholstering:chair'seats compr-islng` a support, a. diethereon, clamping bars pivoted to said. support andi normally dlsposed outwa-rdly therefrom, and

means for swinging said bars inwardlyand' then down to clamp the marginal portions of acover upon the u'pp rz face of saiddie, said bars Zbeing arranged to operate in unison.

6. Apparatus for upholstering` chair. seats comprising a` support, an interchangeable die thereon, means maintaining said die in fixed positionupon said support, clampingv bars adjustably mounted upon said support, and means for actuating' said bars toclanip a cover upon said, die.v

7. Apparatus for upholste'ring chair seats comprising` a support, a die thereon, a clamping bar. adjustably moun-tedupon said support for swingin);` movement, and means operable to'swing' saidzbar over said die and then down to clamp acover thereon.

8;v Apparatus for upholstering chair seats comprising a support, a die thereon, means maintaining said die in fiXed position upon said support, a braclzet adjustably mounted on said support, a clamping Vbar mounted onsaid bracket, and means for actuating` said bar to clamp a cover' upon said die.

9. Apparatus for upholstering chair seats comprising a support, a die thereon,. a bracket adjustabl'y attached to said support by'a combined gage and adjustment member, a member havingv a clamping bar pivoted on said bracket-,and means for actuating said last named member to clamp a cover upon said die.

10.- Apparatus for upholstering chair seats comprising a support, a die thereon, means maintaining said die in fixed position upon said support, a bracket adjustably mounted on said support, an arm pivoted to said bracket, a member having'` a clamping bar pivoted to said arm, and means for actuating said member to lclamp va cover upon said die.`

11. Apparatus for upholstering. chair seats comprlsmg a support, a die thereon,

I sie.

pivoted to said bracket, a1member pivoted to said arms and bent aroundsadsupport and provided at its free end With a clamping` bar, and means for actuating said member to cause said bar to clamp a cover upon said 12. Apparatus for upholsteringify chair seats comprising a support, a die 0thereon, means maintaining said die in fixed position upon said support, a bracket mounted on said support, arms pivoted to said bracket, a member pivoted to said arms and bent around said support, and provided'at its free end With a clamping bar, said member having an inwardly disposed cam proiection, and means actuating said member` through its cam projection and pivotal con- .nections to clamp a cover upon said die.

`13. Apparatus for upsolstering chair seats and the like, comprising a support, a die thereon, a clamping member having a double pivotal connection With said support, and means for actuating said member to ela-mp a coverupon said die.

- 14. Apparatus for upholstering seats and the like, comprising al support a die thereon, a clampinz member normally disposedoutwardly and at an angle to said i ``plura-lit)1 of clamping bars movably mount-` ed upon said support and means for simulsupport, and means-.operable to move said member inwardlyand then downvvardly to clamp a cover upon said die.

15'. Apparatus for upholstering chair` seats and the like comprisinga support, a die thereon, a clamping member having a double pivotal connection with said support, said connection being` such that movement upon one pivot svvings said member over said die and movement on the other pivot draws said member downvvardlyto 'clamp a cover upon said die. v z

16. Appparatus for upholstering chair seats comprising a support, a die thereon, a

taneously actuating said bars to clamp a cover uponsaid die.

17. Apparatus for upholstering chair seats comprising a support, a die thereon, a

plurality of clamping bars movably mounted upon said support and means for vSimultaneously actuating said bars to clamp a cover upon said die, said support, bars and actuating means being rotatable as a unit.

18. Apparatus for upholstering ,chair seats comprising a rotatable table, a hollow shaft supporting said table, `a plurality of clamping members mounted on" said table, and means including a reciprocable` member Within said shaft for actuating` said clamping members. f

19..Apparatus for` upholstering chair seats comprising a rotatabletable, aholloW shaft supporting said table, a plurality of clampin members pivotally mounted on said tab e, ,and means including a reciproi'z.

chair plurality of clamping members mounted on i said support and fiuid pressure actuated means mounted o-n said shaft for Operating said clamping members.

22. Apparatus for upho'lstering chair seats comprising a table, a hollow-shaft sup'- portingsaid table, a plurality of clamping members p-ivoted to said table, and means for actuating said members including a reciproeable rod within said shaft and members extending from said rod to' each of said clamping members.

23. Apparatus for upholstering chair seats comprising a table, generally quadrilateral in form, a clamping member p-ivoted to said table adjacent each side thereof, a hollow shaft rotatabl)T supporting said table, and means for simultaneously actuatingl;` said members including Va reciprocable rod Within said shaft and crossed members connected to said rod and extending to each of said clamping members.

24. Apparatus for upholstering chair' seats comprising a table, a plurality of iclamping members, each pivoted to links in turn pivoted to said table, cam projections on the inner `ends of said members, crossed plates having their ends disposed adjacentto and above said cam projection, and means for reciprocating said plates, said parts being constructed and arranged to first swing said clamping members inwardly over said table and then dovvnwardly to clamping position.

25. Apparatus for upholstering chair seats comp'rising a table, a hollow shaft suppo-rting said table, a plurality of clamping members, each pivoted to links in turn pivo-ted to said table, cam projections on the inner ends of said members, crossed plates having their ends disposed adjacent to and above said cam projection, a rod reciprocablewithin said hollow shaftand connected to said crossed plates, and fiuid-pressure means mounted on said shaft for reciprocating said rod, said plates and said clamping members being so constructed and arranged that downward movement of said rod moves said clamping members simultaneously first inwardly and then downwardly. 1 r

26. Apparatus for upholstering: chair tained in fiXed position upon'said'support, -a plurality offclamping members mounted on-sa-id support, for clamping a'cover upon said die, means for conjoi'ntly a'ctuating said members, and means for forcing a seat v'bottom into said die to stretch said cover.

v27. pparatus for 'upholstering chair seats, comprisingV a support, a die maintained in fixed position upon said support, '1 U la plurali'ty of c-lamping members mounted on said supportfor clamping a cover upon said die, means for conjointiy actuatingsaid members, a fol-loiver mounted adjacent said .support for 'movement thereover and adaptlfiied 'to be positoned above a seat bottom placed on the cover, and means actingon i .said follower for forcing the seat bottom into said die to stretch said cover.

. 28. Apparatus for upholstering' Chair `lseats, comprising` a support, a die maintafined in fiXed position upon said support, a plurality of clalnping membersmounted on said'su'pport for clamping` a cover upon said die, a follower mounted 'adjacent said support 'for 'free swinging' movement thereof and adaptedto be positioned above a vseat bottom .placed on the co-ver,-and .a plunger 'acting on said foliower for forcing the seat bottom vinto-said die'to'stretch said cover. 29. App'aratus 'for upholstering chair seat's comprising a support, a die thereo-n, vmeans forcla'mping' a cover across said die, 2a follovver mounted for swinging movement over said support to be positioned above a fseat bottom :placed upon said cover, and a pl'u'nger `lada'pted 'to contact said follower and force it downwardly thereby to cause said cover'to `be stretched over said seat bottom, and means for =reciprocating said 40 'piunger 30. pparatus for 'upholstering chair seats comprising a support, a die thei'eon, means for clamping a cover 'across said die, a lfolflower rotatably mounted upon a swinging 10 arm for 'movemcnt oversaid support to be positioned above a seat bottom placed upon 'said cover, and a plunger adapted to conltac-t said follower and force it dovvnw'ardlv y 'thereby to cause said cover to be stretched U0 'over vsaid seat bottorn, and 'fluid pressure means for 'Operating said p'hinger' in one fd'lredtion. i

31. Apparatus 'for uphoistering chair H seats 'comprising va rotaltable support, a die 05 .'thereon, ;a plunger for forcing a seat bottom 'into said die, and a 'ball bearingtupon the 'end 'of :said p'unger 'for permitting` rota'tion --fo"f Asaid support While Ethe 'plunger is in oo- 'eratrve sposition. i 32. Appa-'ra'tus for upholstering chair '"seats :comprlsing a support, a die the'reon,

*means for cla'mping -a' cover upon said die,`

a plunger for forcing a seat bottom into 'said die to stretch the cover thereover;` and a follower movable into and out, of operative associationv With said'plun'ger to receive the thrust of the latter 'and transmit it to the seat bottom.

38. Apparatus 'for upho-lstering chair sea-ts comprising` a support, a die 'thereom means for clamping a cover upon said'die, and means for forcing a seat bottom into said die to stretch the cover 'thereover including a follovver mounted yupon a swinging arm for movement over said support to a position above said die and seat'bottom.

84. Apparatus for upholstering' chair vseats comprising a support, a die 'thereon, means'for clamping a cover upon said die, a follovver mounted upon a sivinging arm for movement to a Vposition above said cover and a seat Vbottom thereon, means for -normally maintaining said foliovver above said cover and seat but permitting' 'downvvard movement thereof, and means a'dapted to contact said follovver to therebv force said seat bottom into said die to stretch the cover thereover. 1

35. Apparatus 'for u-pholsterng box seats comprising a support, a die "thereon, and means for clamping a cover upon saidjdie, said die lhaving a marginal rim *nroviding a substantially plane Vsurface upon which the marginal portions 'of ;a seat cover mayv be clamped, means 'providing' a yielding' surface for said rim, 'means for retaining a cover Vupon Said die, and in'vvardly beveledlsurfaces adapted lto Shape vsaid cover about 'a seat 'bottom 'forced into *said die to stretch said' 'cover thereover.

`l36. Apparatus for uphols'tering'box'seats comprisin'g 4a support, a die the'reo'n, and means for clamping a cover upon said die, said die being constr'ucted and a'rranged for Shaping and stretchin'g *the cover over a seat bottom and 'comprisi'ng surfaees for conta'c'ting portions vof the `ycover previous to :being stretc'hed and other surfaces "for contacting the cover after being stretched, and resilient material 'formin'g said'sur'faces' to prevent injury to the cover. 'i

37. App'aratus for upholstering: boxl seats com'prising a support, a die "thereon, 'and 'means 'for clamping *a cover upon said die.V

saiddie being constructed and arranzed for Shapingr and stretching`-the cover over la 'seat bottom com'pri'sing surfaces for 'contactinr portions of the cover previous t'o being strethed and other surfaces for contactinn` the cover after being stretc'hed s'aidv surfaces being formed lbv strips of resilien't material attached vto said die to prevent in'jury to the cover. certain of said strip's having' roughened surfaces.

38. Apparatus for upholstering' box seats 'comprising a support, a die thereon, and means for ciamping 'a cover upon said die, `said die beinf'r'c'onstru'cted 'and la'irrang'ed 'for Shaping and stretchin'sz 'the cover over a ;seat Ibottom :and comprising a 'rim upon which the marginal portions of a seat cover are to be clamped, inwardly beveled surfaces extending downwardly from said rim, and stripsiof resilient material on said rim and said surfaces to prevent iniurv to said cover.

39. Apparatus for upholstering box seats comprising a support, a die thereon, and means for clamping a cover upon said die, said die being constructed and arranged for Shaping and stretching the cover over a seat bottom comprising a rim upon which the marginal port-ions of the cover are to be clamped, strips of resilient material having a roughened surface being provided on said i rim to hold the cover against slipping, said die having beveled surfaces extending inwardly and dovvnwardly from said rim, and strips of resilient material fittingin grooves and flush With said surfaces to prevent injury to said cover when stretched and forced into contact therewith.

In a device of the class described, a

of clamping bars arranged for simultaneous operation and a control member for said means Whereby movement of said member in one direction .causes said means to become operative and movement thereof in a different direction causes said means to become inoperative.

41. In a device of the class described, a support, a die thereon, a plurality of members pivoted to said support for clamping a cover upon said die, said members being normally disposed away from said die, means for simultaneously actuating said members, and a manual control for said means constructed and arranged to produce simultaneous movement of said members to clamping position or reverse movement to normal position.

Signed by me at Gardner, Massachusetts, this 24th day of April, 1922.

FRANK H. BANCROFT.

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