US1147406A - Driving mechanism for washing-machines. - Google Patents

Description

H. S. JUDD & H. PLETSCH'. DRIVING MECHANISM FOR WASHING MACHINES.

APPLICATION FILED FEB- 10, 1910.

1,147,406., Patented July 20, 1915.

2 SHEETS-SHEET I.

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H. 3.1mm & H. PLETSCH.

DRIVING MECHANISM FOR WASHING MACHINES. APPLICATION FILED FEB. 10, WW. 17,406, Patented July 20, 1915.

2 SHEETS-SHEET 2- HENRY S. J UDD AND HENRY IPLETSCH, OF CHICAGO, ILLINOIS, ASSIG-NORS '10 JUDD LAUNDRY MACHINE COMPANY, OF CHICAGO, ILLINOIS A CORPORATION OF DELA- WARE.

DRIVING- MECHANISM FOR WASHING-MACHINES.

Specification of Letters Patent.

- Patented July 20, 1915.

Original application filed March 4, 1907, Serial No. 360,400. Divided and this application filed February 10, 1910. Serial Iva-543,105.

oscillate upon a horizontal axis below the center of gravity.

The present application is acontinuation in part of an earlier application filed by us March 4, 1907, Serial N 0. 360,400.

The invention consists in the features of improvement hereinafter set forth, illustrated in the preferred form in the accompanying drawings and more particularly pointed out in the appended claims.

In the drawings, Figure 1 is an end elevation with parts broken away; Fig. 2, a section on the line 2-2 of .Fig. 1; Fig. 3, a detail of a modification.

Like parts are indicated by the same letters in all the figures.

The tub A has the rigid end pieces A provided with the lining panels A to which is attached the sheet A making up the sides, bottom and part of the top of the tub. The sheet A overlaps the crimpedi edges A of the panels A and is held upon the ends A by means of the screws At.

The frame B which rests upon the ends A and is riveted at the sides to the sheet A is provided with the downwardly depending L-shaped flange B having therein the packing B The door B having the downwardly depending flanges B adapted to engage the packing B is held in the tub by means of the screws B adjustably mounted in the lever B and riding upon the tapered lugs B upon the door. The lever B is held by means of the screw 13 and the lug B upon the body of the tub. The plates 0 having the inwardly-turned bottom flange C are held by means of the bolts C to the end pieces A and are provided with the trunnion C and shaft G other are connected by means of the bolt D,

the knife edge D nut D and lug D to the frame C The driving spring E is attached at one end to the tub by means of the bolt E and knife edge E and at the other end to the lever E which is rotatably mounted upon the shaft C The knife edge E bears upon the upper surface of the laterally projecting part 6* of a bracket E that is suitably bolted to the end wall of the tub, and the bolt E is shown as passing through the laterally projecting part of the bracket E and through the knife edge E The lever E is connected by means of the rod G to the crank G which is mounted upon the shaft G and driven by means of the belt G and pulley G tached at one end to the lever D and has at the other end the plug H slidably mounted within which, is the rod H having at its end the head H adapted to engage the plug H.

Referring to Fig. 3, the spring J incloses the spring J and has at one end the plug J 2 which engages both the inner and springs. At the other end the plug J engages the spring J and is rigidly attached to the bolt J The plug J engages the spring J and is held slidably mounted upon the bolt J 4 and adapted to engage the head J upon such bolt.

The spring illustrated in Fig. 3 may be used as a substitute for the springs shown in Figs. 1 and 2 if such arrangement should seem desirable.

It will be evident that although we have shown in our drawings an operative struc-' ture, still numerous changes could be made in the shape, size and arrangement of parts without departing materially from the spirit of our invention. The springs might be interchanged and numerous other changes might be made.

The use and operation of our invention are as followsz-Ne provide a tub which os- The spring D is atouter Y 1 i fall independentof the springs.

- continues until the lug is carried around to auxiliary checking sprlngs;

' connection of the metal parts.

undue tension on cillates about an axis below the center of gravity, said axis relatively near the bottom of the tub. The shape of the tub is such that as oscillation takes .place, the water therein describes a path essentially difierent from that of the tub. In other words, the water in the tub is reflected from surface to surface as the tub oscillates. The tub is made up of rigid ends preferably of wood having metallic linings partially overlapping the wood with a metallic side sheet com-v pletely surrounding the edges of the wooden ends and soldered to the end linings. By this arrangement we are enabled to nail or screw the metal part to the wooden part of the tub without interfering with the soldered It should be noted that the driving spring E is interposed between the lever E which extends upwardly from its pivot, and the tub, and in. the preferred embodimentof the invention set forth, the axis ofthe pivot of the lever coincides with that of the tub and the spring extends between the upper end ofv the lever and the upper .portion of the tub. This arrangement allows the tub to oscillatethrough a larger arc than the lever, without placing the driving spring. In the preferred embodiment shown, the in chned retracting springs are connected to a pivot plate on the axis of the'tub and the latter provided with a pin which reengages an arc-shaped slot in the pivot plate. By this means the tub has a certain free gravity This fall the end of the slot whereupon the retracting springs come into play. This is provided so that when the tub is running light it Wlll ,still be enabled to get sufficient momentum in each stroke to do the necessary work without undue jar and strain upon the driving mechanism. Thus, as the tub is started the connecting rod throws the driving lever out of line between the point of application on the tub and the axis, thus exerting tension upon the driving spring. In the devices where the springs tend at all times to maintain the tub central, the driving mechanism must immediately commence work against these retracting springs. In this device, however, the driving mechanism is not called upon to overcome the tension of the springs at the start of the stroke where the mechanical advantage is least. We have shown that is to say, in one case three springs, two of which are constantly operative, a third operative merely when the elongation of the other two has reached a certain point. We have shown also springs one within the other wherein the outer spring is stretched until the head on the rod engages a plug in the inner checking spring to put it to work. This secondary spring may be termed a checking tory movements ia-mos spring since it becomes active only toward the end of the stroke and tends to prevent and reversing the tub with a minimum of a too great travel, at the same time stopping jar and resulting strain on the mechanism.

1. Driving means for a washing tub comprising a frame having suitable bearings, trunnions projecting laterally from said tub near the bottom thereof and supported by said bearings, alever pivotally mounted upon one of said trunnions and extending upwardly therefrom, a driving rod connected to said lever and a driving spring connected at its lower end to the upper portion of said lever and extending upwardly therefrom, said spring being connected at its upper end to the tub. v

2. Driving means for a washing tub comprising a frame having suitable bearings, trunnions projecting laterally from said tub near the bottom thereof and supported by said bearings, a lever pivotally mounted upon one of said trunnions and extending upwardly therefrom, a driving rod connected to the upper portion of said lever, a driving spring connected at its lower end to the upper portion of said lever, a bracket connected to the upper portion of the tub and. having a laterally projecting part, a knife-edge bearing upon the laterally projecting part of said bracket, and a rod passing through said laterally projecting portion of the bracket and connected to said knifeedge, the lower end of said rod being adjustably connected to the upper end of said driving spring.

3. Driving means for a washing tub comprising a frame having suitable bearings, trunnions projecting laterally'from said tub near the bottom thereof and supported by said bearings, a lever mounted for oscillaabout a horizontal axis and extending upwardly therefrom, a driving rod connected to the upper portion of said lever, and a driving spring connected at its lower end to the upper portion of said lever and extending upwardly therefrom, said spring being connected at its upper end to the tub.

4. Driving means for washing tubs, comprising aframe on which the tub is mounted so as to oscillate about a fixed horizontal axis near the bottom thereof, a plate rotatably mounted about said axis, said plate provided with an arc-shaped slot therein, a lug rigidly attached to the tub adapted to engage in said slot, a plurality of retracting springs attached at their one end to the frame and at their other end to the said plate, and means to impart an oscillatory motion to the tub.

5. Driving means for washing tubs, comprising a frame on which the tub is mounted so as to oscillate about a fixed horizontal axis near the bottom thereof, a lever rotatably mounted about said axis, a spring attached to the tub at one end and to said lever at the other end, a plate rotatably mounted about the horizontal axis, said plate provided with an arc-shaped slot therein, a lug rigidly attached to the tub adapted to engage in said slot, and a plurality of retracting springs attached at one end to the frame and at the other end to said plate.

6. Driving means for'washing tubs, comprising a frame on which the tub is mounted so as to oscillate about a fixed horizontal axis near the bottom thereof, a triangular plate rotatably mounted at its apex about said axis, a slotted connection between said plate and tub, retracting springs attached at one end to the frame and at the other end to the two remaining apexes of the plate, and means to impart an oscillatory motion to the tub,

CI. Driving means for washing tubs, com

prising a frame on which the tub is mounted about a fixed horizontal thereof, a plate rotaso as to oscillate axis near the bottom tably mounted about connection between said tub and plate, levers pivoted to said plate, and a retracting member for the tub comprising a plurality of springs connected at one end to the frame and at the other end to said levers, and

such axis, a slotted mtgans to impart an oscillatory motion to the tu 8. In a machine of the character set forth, the combination of a frame, a body pivoted thereon to oscillate about a horizontal axis below its center of gravity, a lever pivotally mounted to oscillate about an axis coinciding with the axis of said bod ,said lever extending upwardly from its axis, a spring connected'at its lower end to the upper portion of said lever and extending upwardly therefrom, said spring being connected at its upper end to said body, a driving rod connected to said lever, and retractin springs connected to said body for reversing the movement thereof.

9. In a machine of the character set forth, the combination of a frame, a body pivoted thereon to oscillate about a horizontal axis below said center of gravity, retracting springs connected to said body to reverse the movements thereof, a lever mounted to oscillate about a horizontal axis and extending upwardly therefrom, a driving rod connected to said lever, and a driving spring connection between said lever and said body.

HENRY S. JUDD. HENRY PLETSCH. Witnesses:

FRANCIS W. PARKER, Jr., MINNIE M. LINDENAN.

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