US 1920715 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
Aug. l, 1933. R SAGER 1,920,715
LAUNDRY FLAT PIECE SPREADER AND CARRIER Filed March 25, 1931 s sheets-sheet 2 Aug. 1, 1933. R. SAGER LAUNDRY FLAT PIECE SPREADER AND CARRIER Filed March 23, 1931 3 Sheets-Sheet 3 25 broken lines, other parts being Patented Aug. 1, 1933 `LAUNDRY FLAT PIECE SPREADER AND CARRIER i Lee R. Sager, Minneapolis, Minn.assignor of one-V third to Antone Wayne Julian and one-'third to `Merton A. Pocock, Minneapolis, Minn.
Application March 23, 1931. Serial No. 524,587
17 Claims. (Cl. 271 79)` My present invention has for `its object the pro,- vision of a simple and highlyV eicient laundry fiat piece spreader and carrier. v
By the use of this invention flat pieces,-such as bed sheets, bed spreads, table cloths and the like, as they come hunched, rolled or folded from a wringer are successively fed by hand to a carrier which automatically grasps the pieces and draws said pieces over a spreading` or 0 smoothing device and then automatically releases and stacks-the saine upon a rack which,
when loaded, is moved to a flat piece ironer where the spread pieces are successively fed thereto.
To the above end, generally stated, Athe invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims. v
In the accompanying drawings, which'rillustrate the invention, like characters indicate like parts throughout the several views.
Referring to the drawings:
Fig. l is a right-side elevation'of the laundry flat piece carrier and spreader, some parts being diagrammatically illustrated by means,` of
shown indifferent positions by means of broken lines, and further diagrainmatically illustrating, by means of dotted lines, a rack positioned to `receive at pieces from the carrier;
Fig. 2 is a front end elevation of the parts shown in Fig. 1;
Fig. 3 is a rear elevation of the parts shown in Fig. l, with a portion of the frame broken away and the rack removed;
Figs. 4, 5 and 6 are fragmentary detail views -with some parts sectioned on the lines 4 4, 5 5 `and 6 6 of Figs. 1 and 2, on an enlarged scale; 1 Y
Fig. '7 is a fragmentary detail view of one of the belts, on an enlarged scale; and
Fig.'8 is a fragmentary detail view, withrsome parts sectioned on the line 8 8 of Fig. 7, on an enlarged scale.
The frame of the device is a rectangular skeleton structure comprising a pair of `front legs A9, a pair of rear legs 10, longitudinal top side rails l11 which rigidly connect saidv pairs of VYlegs, upper vand lower cross-tie rails 12 which connect the legs 9 of the front pair, upper and lower cross-tie bars 13 which connect the legs 10 of the rear pair, and intermediate'cross-tie rails l14 which connect the top side rails 11 near the rear end of the frame. l
5 The flat piece carrier, which is mounted on the frame, includes a pair of Vhorizontal' -edgewise spaced endless belts 15, arranged to run over front andrear pairs of wheels 16 and 17, respectively, and are closely positioned to the sides of the frame just below the cross-tie rails 13 and 14.v Saidfront wheels 16, which are idle, 80
Vare loosely journaled on a pairof axially spaced stub shaftsY 418 rigidly secured to depending brackets 19 on front end extensions 20 ofthe .top
`221.` The purpose of .mounting-'thewheels 16 on 7() Laxially spaced stub shafts is tov leave'an unob- 'structed'work space therebetween. The vrear wheels` 17 are rigidly secured `to a transverse shaft 23 journaled in depending brackets V24 on the side rails 11 close to the crosstie rail `13, 75 see Fig. 4. Y
Y The shaft 23 vis driven fromian electric motor.
indicated `as an entirety `by the numeralr 25,
through a speed .reduction drive, indicated as an entirety by the numeral 26, with' the exception of 30 a pulley 2'7 aligned with a pulley 28 keyed to the shaft 23 and over which pulleysruns 'av belt 29. Said motor 25 and speed reductionldrive 26lare lmounted on a common base Vcarried by the cross-tie rails 13and 14'. The power line forlthe 35 motor 25 is indicated bythe numeral `31 land the control switch 32 for saidmotor is mounted in Athefront end of the right-handrail 111',
The wheels 17 lhave at their transversey centers vinternal sprockets 33 the peripheries Vof the teeth 9o of which are flush with 'the peripheries o1' said wheels.A Cooperating with 'these sprocketwheels 33 are longitudinally spaced driving lugs 34 on the inner faces of the belts '15. Circumferentially extended grooves 35 in the vidle wheel 16 afford 95 clearance for the `driving lugs '34 during the travelrof thebelts lrover said wheels.
A Secured to the outer face offea'ch belt 15 is a plurality of longitudinally spaced finger-like clips Sti-which extend longitudinally of said'beIt. Each `1.00 I
and buckle the same -at klongitudinallyspaced "1510 A points, as indicated at 37. Said clips 36, at their transversely spaced pairs and their free ends,
during the travel'of the belts 15 under Ythe wheels 16 and 1'7, project rearward toward the front of the device. The tension on the belts 15, produced by the spacing of the wheels 16 and 17, tends to straighten the buckles 37 in said belts and this force on the attached offset ends of the clips 36 produces a lever-like action which swings the free ends of said clips toward the belts 15 during the travel of said belts between the pairs of wheels 16 and 17.
During the travel of the belts 15 over the front pair of wheels 16 andclips 36 are opened outward from saidwheels or, in other words, the belts 15 are drawn inward from the clips 36. To attach a fiat piece X to the carrier, one edge portion thereof is inserted between the belts 15 and a pair of the clips 36, as they are opened inpassing around'the wheels 16, and thus held until said clips pass from under the wheels 16 and are closed by the tension on the belts 15. As the clips 36 are closed the respective marginal edge portion of the fiat piece X is pinched and securely held between the belts 15 and the offset portions 38 of the clips 36, see left-hand end portion of Fig. 4.
Cooperating with the flat piece carrier is a spreading device comprising a main spreader bar 39 and an auxiliary spreader bar 40, `each of which is, as shown, formed from a single round rod. Thespreader bars 39 and 40 are shaped, intermediate of ltheir ends, to form bows with their crowns midway between the two belts 15; The spreader bar`39 is closely positioned to the outer faces of the front legs 9 and its bowvextends from the center of one of said legs to the center of the other thereof and its end portions are in upright positions and the outer ends thereof anchored to said posts.
. The spreader bar 40 is of substantially the same shape as a horseshoe and closely positioned tov the inner faces of the front legs 9 and anchored at its ends to the lower cross-tie bar 12, see Fig. 2.
The greatest transverse width of the spreader bar 40 is substantially the same as the lengthof the bow of the spreader bar 39. By reference to Fig. 2 it will be noted that the spreader bar 39 is formed on a much flatter curve than the spreader bar 40 and that the crown of the spreader bar 39 is below the plane of the lower runs of the belts 15 while the crown of the spreader bar 40 is above said plane Vand projects upward between said belts.
During the movement ofthe piece X by the belts 15 it is rst lifted from a basket or other receptacle, in which flat pieces are carried from a wringer to the spreading device, and then drawn first over the spreader bar 39 and thereafter over the spreader bar 40. As the piece X is drawn upward over the spreader bar 39 the attendant assists in roughly spreading the same thereon in case said piece is twisted. The spreader bar 39, which is held substantially rigid by its engagement with the legs 9, roughly spreads the piece X and directs the same under the belts 15. v
From the spreader bar 39 the piece X is drawn over the spreader bar 40 and, due to its peculiar mounting, will yield in the direction of the drawing movement of said piece thereover and under its strain to return to normal position will place the piece longitudinally under tension and hold the same smooth. As the piece Xpasses beyond the legs-9 the side portions thereof, due to their weight, will drop down and over the sides of the spreader bar 40 and thereby stretch the piece X transversely from the crown of the spreader bar 39 in reverse directions and smooth the same. The increased sharpness of the curveV of the spreader bar 40 over that of the spreader bar 39 materially assists in causing the side portions of the piece X to slide downward thereon under the Yweight thereof.
` The tensioned spreader bar 40 will hold the piece X longitudinaly taut until the rear edge portion thereof passes from said spreader bar and at which time said tensioned bar will return to normal position. After the spread piece X passes from the spreader bar 40 the pair of clips 36 holding the same pass under the wheels 17 and the contact of the respective buckles 37 therewith and the movement of the belts 15 around said wheels will open the clips 36 and release the piece X. Said piece X, as the same is released by the spreader bar 40 and clips 36, drops Yonto a portable rack placed thereunder and diagrammatically illustrated by broken lines and indicated by the numeral 41. This rack 41 is the subject matter of a copending application executed of even date herewith and entitled Flat piece laundry rack.
The length of the belts 15 is such as to draw bed sheets and other large flat pieces completely over the spreader bar 40 before the clips 36 open to release the same.
After a stack of flat pieces has accumulated on the rack 41, as they are successively spread thereon by the carrier and spreading device, said rack is wheeled to a flat piece ironer where the pieces are successively fed thereto.
From the above description, it is evident that the pairs of clips 36 are successively and automatically opened at the front end of the device to receive a flat piece fed thereto and then closed to draw the piece therewith over the spreading de- 'vice and thereafter automatically released as the clips 36 are opened by passing around the wheels What I claim is:
1. A device of the class describedhcomprising a flexible carrier, and a lever-acting member secured to the carrier and holding the same buckled, whereby when the carrier is placed under tension tending to straighten the buckle therein it will press said member toward the carrier.
. 2. The structure dened in claim 1 which further includes means for intermittently drawing the carrier away from the lever-acting member.
3. A device of the class described comprising a flexible carrier, and a lever-acting member secured intermediate of its ends to the carrier, one arm of said member being offset toward the carrier and holds the same buckled, whereby when the carrier is placed under tension tending to straighten the buckle therein it will press the other arm of `said member toward the carrier.
4. The structure defined in claim 3 in which the other arm of the lever-acting member is offset toward the carrier for direct contact therewith to hold the main body of said arm out of contact with the carrier.
' 5. A device ofthe class described comprising a belt, and a nger-like clip secured at one end to the belt for cooperation therewith to hold a piece of work, said clip being offset at its attachment with the belt to hold theV belt buckled,
whereby when the belt is placed under tension tending to straighten the buckle therein it will press the clip toward the belt.
6. The structure dened in claim 5 in which the clip at its free end is offset for direct contact with the belt to hold the body of the clip out of contact with the belt.
7. A device of the class described comprising two aligned longitudinally spaced wheels, a belt arranged to run over the wheels, and a fingerlike clip secured at one end to the belt for cooperation therewith to hold a pie'ce of work, said clip being offset at its attachment with the belt l to hold the belt inwardly buckled, whereby the tension on the belt, when the buckle in the belt is between the wheels, will tend to straighten said buckle and press the clip toward the belt and when the buckle in the belt is in contact with the periphery of either of the wheels the belt will be drawn away from the clip.
8. A device of the class described comprising two aligned longitudinally spaced wheels, a belt arranged to run over the wheels, and a multiplicity of longitudinally spaced finger-like clips secured at one of their ends to the belt for cooperation therewith to hold a piece of work, said clips being offset at their attachment with the belt to hold the belt inwardly buckled at lon gitudinally spaced points, whereby the tension on the belt, when the buckles in the belt are between the wheels, will tend to straighten said buckles and press the clips toward the belt and when the buckles in the belt are in contact with the peripheries of the wheels the belt will be drawn away from the clips.
9. A device of the class described comprising a front pair of axially spaced wheels and a rear pair of wheels aligned with said front wheels and longitudinally spaced therefrom, a pair of belts arranged to run over said wheels, means for driving one pair of said wheels, a pair of transversely aligned clips attached to the belts for cooperation therewith to hold a flat piece or' work, said clips being offset to hold the belts inwardly buckled, whereby the tension on the belts, when the buckles in the belts are between the wheels, will tend to straighten said buckles and press clips toward the belts and when the buckles in the belts are in contact with the peripheries of the wheels the belts will be drawn away from the clips.
10. In a device vof the class described, a transverse spreader bar for supporting a flat piece thereon, said spreader bar being curved transversely of the device, and a carrier for drawing a flat piece over the spreader bar to spread the same.
ofthe other for supporting a flat piece thereon. v
Yand a carrier for drawing a iiat piece over the spreader bars to spread the same, said auxiliary spreader being arranged to yield in the direction of the movement'of the piece thereover.
12. In a device of the class described, flat piece main and auxiliary spreader bars set one in advance of the other for supporting a vflat piece thereon, and a carrier for drawing a flat piece over the spreader bars to spread the same, said spreader bars being crowned transversely of the deviceV with the crown of the auxiliary spreader bar above the crown of the main spreader bar.
13. The structure defined in claim 11 in which the spreader bars are crowned and in which the crown of the auxiliary spreader bar is above that of the main spreader bar.
14. The structure defined in claim 11 in which the spreader bars are crowned, in which the crown ofthe auxiliary spreader bar is above that of the mainspreader bar, and in which the auxiliary spreader bar is arranged to yield in the direction of the movement of the flat piece' thereover.
l5. In a device of the class described, a carrier comprising aV pair of transversely spaced endless belts having means for holding a iiat piece at one edge, a crowned main spreader bar and a crowned auxiliary spreader bar at the receiving end of the carrier and positioned between the belts thereof with the latter'in `advance of the former, the crown of the main spreader being below the plane of the lower runs of 'the belts and the crown of the auxiliary spreader bar being above said plane.
16. In a device of the class described, a driven wheel, an idle wheel, a belt, said wheels and belt being arranged for the belt to run over the wheels, said driven wheel having an internal sprocket and said idle wheel having an annular peripheral groove, the periphery of the driven wheel on each side of the sprocket being smooth, said belt having on its inner face longitudinally spaced driving lugs arranged to be engaged by said sprocket to drive the belt and move loosely through the groove in the idle sprocket, and a nger-like clip on the outer face of the belt for holding a piece of work against said belt.
17. The structure defmed in claim 12 in which the crown of one of the spreaders is materially flatter than the crown` of ythe other of said spreaders.
. LEE R. SAGER.