US473950A - Ironing-machine - Google Patents

Description

(No Modell.)

B.. S. NELSON 8v A. KRYEUTER. IRONING MACHINE.

No. 473,950. Patented May 3, 1892.

NITED STATES PATENT OFFICE.

ROBERT S. NELSON AND ADAM KREUTER, OF CHICAGO, ILLINOIS.

lRoNlNe-MACHINE.

SPECIFICATION forming part of Letters Patent No. 473,950, dated May 3, 1.892.

Application filed September 4, 1891. Serial No. 404,706. (No model.)

To all whom it may concern.:

Be it known that we, ROBERT S. NELSON and ADAM KREUTER, both citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Ironing-Machines, of which the following is a specification.

Our invention relates to that class of ironing-machines which have two horizontal rollers revolving Within a strong frame, one of these rollers being mounted in stationary bearings and the other in movable bearings, as will be understood by the description hereinafter.

Our object is to introduce an improved device in an ironingmachine of this kind for the purpose of effectually regulating the pressure of one roller against the other, so that a yielding pressure is attained, which can be quickly increased or decreased as to amount at the will of the operator; and we attain this object by the mechanism shown in the accompanying drawings, in which- Figure l is a front elevation of a collar and cuff ironer embodying our improvement; Fig. 2, an elevation of the left-hand end of the machine shown in Fig. l, with several minor parts shown in dotted lines. Fig. 3 shows side, end, and top Views of one of the journal-boxes of the upper roller. Fig. 4 shows top and side views of a regulating-screw and its shaft. Fig. 5 shows a spiral spring used in the combination. Fig. 6 shows side and bottom views of a worin-wheel; and Fig. 7 shows side and end views of a screw or worm which engages with the worm-wheel shown in Fig. 6, and forming a worm-gear, as shown in Figs. l and 2.

The standards A of the frame of the machine are bifurcated from C to D,Fig. 2, and there isa cross-brace connecting the sides of the bifurcation of each standard at E. Restn ing upon the cross-brace E at each side of the machine are journal-boxes a, forming bearings for the lower roller F. This lower roller is ordinarily not provided with means for elevating its boxes, but remains in one position. This roller is hollow, is made of metal, and .i has a highly polished surface, and within its central hollow portion is introduced a pipe from the endF, which pipe is provided with air and gas connections whereby the roller is heated throughout its length, as is common with ironing-machines of this class.

Above journal-boxes a are journal-boxes b, which form bearings for the shaft of the upper movable roller G. This box (shown in Fig. 3) is arranged to slide vertically in the bifurcations of the standards A, and. has projections c to hold it from lateral motion. At the top ot each of the boxes b is a projecting portieri d, which is provided with a vertical threaded hole e to receive the screw-threaded end fof vertical shaft I-I. (Shown in Fig. 4.) Shaft H has a shoulder g at the upper end of its screw-threaded portion f and above the shoulder around shank h, whichhas a groove t' at its top to receive the projection j (shown in Fig. 6) of worm-wheelI. is so iitted to the top of shank h that the shank is free to slide through the hole k, but any rotary motion being imparted to wormwheel I will be transmitted to shank h. It will be understood that projection j is iirmly secured to the worrn-wheel I. The two standards A of the frame are held in position at the bottom by around rod J and at the top by a broad cross-tie K, each end of which also forms a tie to strengthen the top of the two parts of the bifurcated standard A.

` In Fig. 2 is shown box b and its projection d, together with shaft H and its shoulder g, and around shank h is a spiral spring H', (shown, also,in Fig. 5,) whose lower end bears against the top of shoulder g and whose top bears against the under side of cross-tie K. The shank h of shaft I-I passes up through a hole in cross-tie K, and the top of the crosste forms a bearing upon which rests the hub of worin-wheel I. Shaft H is shownin Fig. 2 with its threaded end f in engagement with the threads of journal-box projection CZ. Fig. l shows a shaft L across the machine at the top, which shaft is journaled in boxes Z, near worm-wheels I, and at the left-hand end, Fig. l, is a hand-wheel m with its handle n, by which shaft L is revolved. Secured to shaft L, opposite worm wheels I, are worms M, whose threads engage with the teeth of wormwheels I and form worm-gears.

The machine is operated for ironing by power being applied to pulley N by means of a belt and through a train of gearing to rollers F and G.

This worm-wheel IOO In operation when any change in pressure between rollers F and G is desired the hand- Wheel m is turned, which motion is transmitted through shaft L and the Worm-gears to vertical shafts ll. Should the threaded portion f of shafts H be screwed down into the box projections d, the distance of the shoulders g from the under side of the crosstie K will bel increased, which also increases the length of the spiral springs H, surrounding Shanks z, and thereby decreasing their strength. lf the motion of the hand-wheel m is now reversed and the threaded portions f of shafts H are screwed out of projections d of boxes b, the shoulders g of shafts H -will approach the under side of cross-tie K and compress spiral springs H and increase the downward thrust of shafts H upon the threads in holes e of projections d of journal-boxes b, which pressure is transmitted to roller G through its shaft, whose ends are journaled in boxes b at each side of the machine. Since roller G rests upon roller F when no goods low up from time to time the set in the surface elasticity of roller G as the padding becomes permanently compressed by long use. Should any unusual thickness be accidentally run between the rollers, the springs will always yield to the increased strain and. prevent any danger of breakage of the operative parts, and since shank h of each shaft H is free to move longitudinally through the wormwheel I the worm-wheel is adequately held from being lifted from its seat bythe contact of worm-wheel M.

We claim as our invention- In an ironing-machine, threaded shafts H, each having a shank h, journal-boxes b of movable roller G, said boxes fitted to move longitudinally between the bifurcations of standards A, said boxes each having a threaded portion d, inwhich operates the threaded portionfof one of the shafts H, the top portion of each of said shanks h supported in a bearingincross-piece K, springs H', one spring bearing against a projection of each of said shanks, the upper end of said springs bearing against cross-piece K, and a worm-wheel I, mounted at the top end of each of said Shanks, said worm-Wheels revolving with said shanks, said shanks capable of a longitudinal motion through said worm-wh eels, each of said wormwheels geared to and driven by a worm, in the manner and for the purpose substantially as described.

ROBERT S. NELSON. ADAM KREUTER. Witnesses:

OSCAR SNELL, EDWARD B. KOTTEK.

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