US2948138A - Wringer - Google Patents

Description

J. PICKARD Aug. 9, 1960 WRINGER 2 Sheets-Sheet 1 Filed Oct. 31, 1956 171/517202 JAM women J. PICKARD Aug. 9, 1960 WRINGER 2 Sheets-Sheet 2 Filed Oct. 31, 1956 JACK P/(KAED United States Patent WRINGER Jack Pickard, Ancaster, Ontario, Canada, assignor to N. Slater Company, Limited, Hamilton, Ontario, Canada, a corporation of Canada Filed Oct. 31, 1956, Ser. No. 619,554

6 Claims. (Cl. 68-258) This invention relates to a wringer and the primary object of the invention is to provide a wringer having a simple compact pressure reset mechanism by which pressure between the wringer rolls is readily applied and re leased, which permits adequate separation of the rolls, and which is trouble-free and reliable in operation.

In the wringer of this invention, one of the wringer rolls, preferably the upper roll, is shiftable toward and away from the other roll, into and out of pressure engagement therewith. A pair of parallel rod members, transverse to the roll axes, are connected to the bearing means journaling the opposite ends of the shiftable roll, and each of the rod members is arranged to telescope in a clutch device which is arranged to engage for moving the rolls into pressure engagement. The rolls can be readily moved manually into light pressure engagement, especially when the upper roll is the shiftable roll. Accordingly, the clutch device need only be engaged to move the bearings for the shiftable roll the short distance required to move from light to heavy pressure engagement.

According to a further feature of the invention, the clutch devices are power-actuated, and the construction is particularly advantageous in this respect, because of the short distance of movement required.

-A specific feature of the invention is in the construction of the clutch devices which are simple and yet reliable in operation.

Another specific feature of the invention is inthe construction of the power-actuating mechanism.

A further specific feature of the invention is in the construction of means for latching the rolls in pressure engagement, and mechanism for readily releasing the latch mechanism.

Still another specific feature of the invention is in the construction of a mechanism which is compact and readily assembled from a minimum number of component parts.

This invention contemplates other objects, features and advantages which will become more fully apparent from,

Figure 1 is a side elevation view with parts broken away of a wringer constructed according to the principles of this invention;

Figure 2 is a sectional view taken substantially along line II-H of Figure 1;

Figure 3 is a fragmentary sectional view taken substantially along line IIIIII of Figure 2; and

Figure 4 is a fragmentary sectional view taken substantially along line IVIV of Figure 2. t 1

Reference numeral generally designates a wringer constructed according to the principles of this invention. The wringer 10 comprises a lower roll 11 andan upper roll 12 which is si hiftable up and down' out of and into pressure. engagement with the lower roll 11. To release pressure between the rolls, either one of a pair of te Patented Aug. 9, 1960 housed by upright 17 is illustrated in detail.

The mechanism within the upright 17 comprises a bearing 18a which supports the shaft 19 for the lower roll 11, the shaft 19 having an end portion projecting through the end wall of the upright 17 to be driven by a suitable driving mechanism. The bearing 18a is supported in a cage 20 which is fixedly carried by the upright 17. For this purpose, the cage 20 has a pair of cars secured by screws 21, and 22 to inwardly turned struck-out portions 23'and 24 of the side walls of the upright 17. Means not shown are provided for securing the outer side of the cage 20 to the end Wall of the upright 17 The opposite side portions of the cage 20 are formed to provide guides for vertical slide members 25 and 26, one of which is illustrated by Figure 4. The upper ends of the slide members 25 and 26 are secured to a cross bar 27 which is connected through spring means and bolts to a yoke 28 which carries a bearing 29 for the upper roll shaft 39. In particular, a pair of bolts 31 and 32 are provided havinghead portions at their lower ends and shank portions extending upwardly through coiled compression springs 33 and 34, through openings in the cross bar 27 and through openings in out-turned flange portions of 35 and 36 of the yoke 28 with nuts 37 and 38 being threaded on the upper ends of the bolts. Accordingly, the cross bar 27 may be moved downwardly to pull the bearing 29 downwardly through the springs 33 and 34, bolts, etc., to thus exert the pressure between the wringer rolls.

The bar 27 is releasably held in a position in which pressure is applied between the rolls by means of a pair of pivotal latch members 39 and 40 which are urged inwardly, by means to be described, to positions in which tooth portions 41 and 42 thereof engage over the upper surface of the bar 27 at the opposite ends thereof. The latch members 39 and 40 are pivotally mounted on suit-. able lugs turned inwardly from the uprights 17 and 18.

For pressure release, the latch members 39 and 40,

carry pins 43 and 44 which are received in cam slots 45 and 46 of release bar support levers 417 and 48. The levers 47 and 48 are pivoted on pins 49 and 50 and have downwardly projecting arm portions 51 and. 52 which are interconnected by a link 53 extending through the wringer. With this arrangement, movement of either of the release bars 13, 14 either toward or away from the wringer will cause movement of both release levers, and movement of both latch members 39 and 40 outwardly, to allow the bar 27 to move upwardly.

To resiliently urge the latch members 39 and 40 inwardly, they are provided with arm portions 54and 55 which project outwardly through openings in the side walls of the upright channel 17. a A spring 56 shown in Fig. l, connects each of the arms 54 and 55 to. a.lug which also provides support for the pin 49 or 50.

When the latch members 39 and 40 .are moved out-.

wardly to release pressure between the rolls, the upper roll may be moved upwardly asubstantial distance as being shown inFigure 4.

To reset pressure engagement between the rolls, the upper roll is dropped downwardly to a position in engagement with the lower roll. A rod 59 dependingly carried by the bar 27 will then move downwardly through an opening 60 in an upper end portion of the bearing support cage and through an opening 61 in a clutch lever 62. The clutch lever 62 is urged upwardly by a coiled compression spring 63 supported in the cage 20 in coaxial relation with the rod 59.

To reset the rolls into pressure engagement, the righthand end of the lever 62 may be moved downwardly, as viewed in Figure 3, which will effect biting engagement between the edges of the opening 61 and the rod 59. Th3 lever 62 is then moved further downwardly to pull the rod 59 downwardly and thus reset the upper roll in pressure engagement with the lower roll.

To move the lever 62 downwardly, a coupling plate 64 is provided which has an enlarged opening 65 through which the shaft 19 extends and which has a notch 66 in the upper end of the opening 65 to receive the lever 62 adjacent the outer end thereof. Movement of the coupling plate 64 toward the left as seen in Fig. 3 is limited by engagement with the cage 20. Opposite movement of the coupling plate 64 is limited by engagement with a pair of side projections at the outer end of the lever 62, that is, toward the right as viewed in Figure 3. As viewed from above, the lever 62 is T-shaped. The coupling plate 64 carries a cam plate 67 having a semicircular upper surface 68 arranged to be engaged by a cam member 69 carried by the lower roll shaft 19. The cam plate 67 may be moved to a position relative to the coupling plate 64 such that the surface 68 will be positioned as indicated by the dotted line 70. Upon rotation, the cam 69 will then engage the cam surface 63 to move the cam plate 67 downwardly and thus pull the lever 62 downwardly through the member 75 and through the coupling plate 64. After pressure between the rolls is reset, the cam plate may be moved downwardly relative to the coupling plate to a position as illustrated, to be out of the path of the cam 69. The spring 63 will then move the lever 62 upwardly from the illustrated position.

Accordingly, with the coupling plate 67 in the full line position as illustrated in Fig. 2, the lever 62 would not remain in the illustrated position. This position is illustrated only to show how the lever 62 clutches the rod 59. In the latched position shown in Fig. 2, spring 63 in Fig. 3, will free lever 62 from clutching shaft 59.

The cam plate 67 has a lower end portion 71 which is received by a notch 72 in the coupling plate 64, the opposite side edges of the portion 71 being grooved to receive the edges of the plate 64 at the notch 72, the cam plate 67 being thus guided for vertical movement relative to coupling the plate 64. The cam plate 67 has a vertically extending slot 73 therein which receives a pin 74 fixedly carried by the wringer frame, to thus prevent movement of the cam and coupling plates about the shaft 19.

To control the vertical position of the cam plate 67 relative to the coupling plate 64, a control member 75 extends horizontally through the assembly between the lower edge of the cam plate 67 and the lower edge of the notch 72. The control member 75 has a pair of notches 76 and 80 therein which may be aligned with each plate 64 to allow the cam plate 67 to drop down to the full line position illustrated in Fig. 2. One edge of the notch 76 is inclined, so that the control member 75 may he Accordingly, to reset pressure between the rolls, the

reset lever 15 is moved inwardly to move the control slide 75 to the left as viewed in Figure l and move the cam plate 67 upwardly relative to the control plate 64, to a position in which the cam edge 68 is positioned as indicated by dotted line 70. When the lever 15 is released, rotation of the shaft 19 will then cause rotation of the cam 69 which will engage the cam surface 68 to move the coupling plate 64 downwardly, to move the end of the lever 62 downwardly, and thus pull the rod 59 downwardly and reset pressure between the rolls. The latch members 39 and 40, under the.influence of the springs 56 will assume the positions shown in Fig. 2.

If the cam 69 were stopped in a downwardly pointing position when the drive of thewringer is discontinued, it might prevent upward movement of the cam plate 67, and thus prevent resetting of roll of pressure. To prevent such an occurrence, a lost motion connection may be provided between the shaft 19 and the cam 69 and the cam 69 may he so balanced as to point upwardlyif free to rotate. For this purpose, the cam member 69 may have a portion 78 of limited arcuate extent, engaged by a pin 79 of the shaft 19, the cam 69 being otherwise free to rotate and being so balanced that the actuating portion thereof is urged upwardly.

As previously indicated, the mechanism housed by the upright channel 18 is identical to that in the channel 17. The control slide 75 as previously stated, is provided with a second notch 80 for controlling that mechanism at the same time that the mechanism within upright 17 is controlled.

It will be understood that modifications and variations may be effected without departing from the spirit and scope of the novel concepts of the present invention.

I claim as my invention:

1. In a wringer, a frame, a first roll journaled in said frame, a second roll parallel to said first roll, a pair of bearing means journalling said second roll, means'guiding said pair of bearing means in said frame for movement of said second roll toward and away from said first roll, a pair of rod elements extending in parallel directions perpendicular to the axes of said rolls and parallel to a plane through said axes of said rolls, a pair of clutch plates disposed in generally transverse relation to said rod elements and having edge portions arranged to bitingly engage said rod elements upon tilting movement of said clutch plates relative to said rod elements, means engaging said clutch plates at points spaced away from said rod elements and movable parallel to said rod elements for initially effecting biting engagement of said edge portions with said rod elements and for thereafter effecting longitudinal movement of said rod elements, means connecting said rod elements to said pair of hearing means for urging said bearing means in a direction to move said second roll toward pressure engagement with said first roll in response to said longitudinal movement of said rod elements, and releasable latch means for releasably retaining said rolls in pressure set condition.

2. In a wringer, a frame, a first roll journaled in said frame, a second roll parallel to said first roll, a pair of bearing means journalling said second roll, means guiding said pair of bearing means in said frame for movement of said second roll toward and away from said first roll, a pair of rod elements extending in parallel directions perpendicular to the axes of said rolls and parallel to a plane through said axes of said rolls, a pair of clutch plates disposed in generally transverse relation to said rod elements and having edge portions arranged to hitingly engage said rod elements upon tilting movement of said clutch plates relative to said rod elements, means engaging said clutch plates at points spaced away from said rod elements and movable parallel. to said rod elements for initially effecting biting engagement of-said edge portions with said rod elements and for thereafter effecting longitudinal movement of said rod elements,

means connecting said rod elementsto said pair of bear ing means for urging said bearing means in a direction to move said second roll toward pressure engagement with said first roll in response to said longitudinal movement of said rod elements, and releasable latch means for releasably retaining said rolls in pressure set condition, said clutch plates having openings of slightly greater dimension than the transverse dimensions of said rod elements with said edge portions being defined by edges of said openings.

3. In alwringer, a frame, a first roll journaled in said frame, a second roll parallel to said first roll, a pair of bearing means journalling said second roll, means guiding said pair of bearing means in said frame for movement of said second roll toward and away from said first roll, a pair of rod elements extending in parallel directions perpendicular to the axes of said rolls and parallel to a plane through said axes of said rolls, a pair of clutch plates disposed in generally transverse relation to said rod elements and having edge portions arranged to bit-' ingly engage said rod elements upon tilting movement of said clutch plates relative to said rod elements, a pair of coupling plates engaging said clutch plates at points spaced away from said rod elements and movable parallel to said rod elements for initially elfecting biting engagement of said edge portions with said rod elements and for thereafter elfecting longitudinal movement of said rod elements, means connecting said rod elements to said pair of bearing means for urging said bearing means in a direction to move said second roll toward pressure set engagement with said first roll in response to said longitudinal movement of said rod elements, releasable latch means for releasably retaining the rolls in pressure set condition, and cam means arranged for moving said cou pling plates.

4. In a wringer, a frame, a first roll journaled in said frame, a second roll parallel to said first roll, a pair of bearing means journalling said second roll, means guiding said pair of bearing means in said frame for movement of said second roll toward and away from said first roll, a pair of rod elements extending in parallel directions perpendicular to the axes of said rolls and parallel to a plane through said axes of said rolls, a pair of clutch plates disposed in generally transverse relation to said rod elements and having edge portions arranged to bitingly engage said rod elements upon tilting movement of said clutch plates relative to said rod elements, a pair of coupling plates engaging said clutch plates at points spaced away from said rod elements and movable parallel to said rod elements for initially elfecting biting engage- .ment of said edge portions with said rod elements and for thereafter eifecting longitudinal movement of said rod elements, means connecting said rod elements to said pair of bearing means for urging said bearing means in a direction to move said second roll toward pressure set engagement with said first roll in response to said longitudinal movement of said rod elements, releasable latch means for releasably retaining the rolls in pressure set condition, and means connecting said cam means to said first roll for actuation thereby.

5. In a wringer, a frame, a first roll journaled in said frame, a second roll parallel to said first roll, a pair of bearing means journalling said second roll, means guiding said pair of bearing means in said. frame for movement of said second roll toward and away from said first roll, a pair of rod elements extending in parallel directions perpendicular to the axes of said rolls and parallel to a plane through said axes of said rolls, a pair of clutch plates disposed in generally transverse relation to said rod elements and having edge portions arranged to bitingly engage said rod elements upon tilting movement of said clutch plates relative to said rod elements, a pair of coupling plates engaging said clutch plates at points spaced away from said rod elements and movable parallel to said rod elements for initially eifecting biting engagement of said edge portions with said rod elements and for thereafter efiecting longitudinal movement of said rod elements, means connecting said rod elements to said pair of bearing means for urging said bearing means in a direction to move said second roll toward pressure set engagement with said first roll in response to said longitudinal movement of said rod elements, releasable latch means for releasably retaining the rolls in pressure set condition, drive means for driving one of said rolls, a pair of cams driven by said drive means, and a pair of cam plates carried by said coupling plates and engageable with said cams.

6. In a wringer, a frame, a first roll journaled in said frame, a second roll parallel to said first roll, a pair of bearing means journalling said second roll, means guiding said pair of bearing means in said frame for movement of said second roll toward and away from said first roll, a pair of rod elements extending in parallel directions perpendicular to the axes of said rolls and parallel to a plane through said axes of said rolls, a pair of clutch plates disposed in generally transverse relation to said rod elements and having edge portions arranged to bitingly engage said rod elements upon tilting movement of said clutch plates relative to said rod elements, a pair of coupling plates engaging said clutch plates at points spaced away from said rod elements and movable parallel to said rod elements for initially efiecting biting engagement of said edge portions with said rod elements and for thereafter effecting longitudinal movement of said rod elements, means connecting said rod elements to said pair of bearing means for urging said bearing means in a direction to move said second roll toward pressure set engagement with said first roll in response to said longitudinal movement of said rod elements, releasable latch means for releasably retaining the rolls in pressure set condition, drive means for driving one of said rolls, a pair of cams driven by said drive means, a pair of camplates carried by said coupling plates and engageable with said cams, and means for moving said cam plates relative to said coupling plates into the path of said cams.

References Cited in the file of this patent UNITED STATES PATENTS 1,322,369 Stocking Nov. 18, 1919 2,210,949 Perkins Aug. 13, 1940 2,214,094 Watts Sept. 10, 1940 2,291,916 Parish Aug. 4, 1942 2,766,604 Thiele Oct. 16, 1956

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