US2700884A - Washing machine - Google Patents

Description

Feb. 1, 1955 A. LODGE 2,700,834

WASHING MACHINE Filed April 18, 1951 4 Sheets-Sheet 3 fit W ALV/A/ L005 Snventor (Ittorneg A. LODGE WASHING MACHINE Feb. 1, 1955 4 Sheets-Sheet 4 Filed April 18, 1951 AL V//\/ 0065 Inventor ml. Gttomeg United States Patent WASHING MACHINE Alvin Lodge, Jamestown, N. Y., assignor to Blackstone gorporation, Jamestown, N. Y., a corporation of New ork Application April 18, 1951, Serial No. 221,685

7 Claims. (Cl. 68-23) This invention relates to Washing machines of the type in which a single receptacle is utilized to wash, rinse, and centrifugally dry clothes. More particularly, the invention is directed to improvements in an automatic machine of this type that operates through the various steps of washing, draining, rinsing and drying, in predetermined order and timed sequence.

Specifically, the invention is directed to an automatic washing machine of the type shown and described in Patent No. 2,361,767, wherein a receptacle, containing an agitator, is vertically adjusted in the course of changing from and to the washing or rinsing position and spinning position. The machine set out in the above mentioned patent, although fully capable of carrying out complete washing, rinsing and drying operations, is subject to certain objections that obtain from improper or careless manipulation by an operator, as well as lacking certain positive safety mechanisms. This is particularly true in connection with the transition in an operative cycle, wherein a spinning operation is completed and a washing or rinsing operation is to be started. Also, the patent is somewhat deficient in its provision of simple and adequate means for quickly commencing or terminating a spinning operation.

It is a purpose and object of the present invention to provide a washing machine that will function, throughout its various sequential operations, in such a manner as to eliminate all possibility of damage to any machine parts or injury to clothing being laundered.

Another and important object of the invention lies in the provision of a mechanism which provides sure and positive clutch and brake control of the clothes receptaclle when it is beginning or completing the spinning cyc e.

A still further and important object of the invention lies in the provision of safety mechanism by which the spinning operation must be completed before the parts may assume a position for the next sequential operation such, for example, as a washing or rinsing operation.

A still further object of the invention resides in the provision of such safety mechanism as will prevent an operator from manually changing the timing sequence of operations in a manner to cause damage to any of the machine parts.

Other objects and advantages of the invention will be more fully understood from a consideration of the following specification, taken in conjunction with the accompanying drawings; and in which Fig. 1 is a side elevational view of a cabinet enclosed washing machine in which one form of the present invention is embodied, a part of the side wall of said cabinet being broken away to disclose the association of the parts of the inventive structure;

Fig. 2 is a greatly enlarged fragmentary vertical sectional view showing the operative parts in position for the operation of spinning a clothes receiving receptacle.

Fig. 3 is a horizontal sectional view, taken substantially on the line 3--3 of Fig. 2;

Fig. 4 is a view similar to Fig. 2 and shows the position of the operative parts when the receptacle has approximately completed the spinning operation;

Fig. 5 is a horizontal sectional view taken substantially on the line 55 of Fig. 4;

Fig. 6 is another view similar to Fig. 2 and shows the position of the operative parts when ready for a-washing or rinsing operation; and

Fig. 7 is a horizontal sectional view taken substantially on the line 7--7 of Fig. 6.

Referring more particularly to the drawing, the reference numeral 10 is employed to generally designate a rectangular cabinet in which a single receptacle washing, rinsing, and centrifugal drying machine, embodying the invention, is contained. The cabinet constitutes no part of the invention, being illustrated merely for the purpose of disclosing the general proportions required to enclose the structure of the invention. The cabinet may be said to be divided into upper and lower compartments 11 and 12, respectively, through the provision of a dished partition 13. This partition, at its margins, may be formed with a depending flange which is permanently attached to the inner faces of the walls of the cabinet, preferably in such a manner as to prevent the downward passage of water into the compartment 12. Although not shown, a suitable drain is provided to remove water accumulating on this partition during a laundering operation. The partition 13 is formed with a central, circular opening 14 which, in the present disclosure, is defined by an upwardly directed, rolled-edge flange 16. This rolled edge, with the immediately ad acent portion of the partition, provides a support for a resilient boot 17 that is of substantially the configuration shown. The upper end of the boot is formed with a radially, inwardly ortset ledge 18 and terminates in an upstanding reinforced neck 19. Mounted on and partially enclosing the neck 19 is a sleeve-like collar 21 that is fitted with one or more set screws 22 which are intended to be turned down into locking engagement with a fixed tubular member hereinafter more fully described. The lower edge of the collar 21 is outwardly flanged, as at 23, to provide rim-like support for a horizontally disposed circular plate 24. The circular opening in this plate is de fined by a reinforced gasket 26, the gasket proper having water-tight fit with the collar 21 and the lower reinforcement thereof being supported on the collar flange 23. The plate 24 may be circularly ribbed, substantially as shown, to give it desired rigidity. The outer edge of this plate terminates in an upwardly inclined flange 27 which mounts a gasket 28 that acts as a water seal to prevent drainage from the clothes receptacle under certain conditions of operation of the device.

In the compartment 12 is located the supporting structure for the entire mechanism of the device. Although this supporting structure constitutes no specific part of the present invention, it is appropriate to briefly describe it in order that the mechanism constituting the invention may be shown to be properly and adequately mounted. The supporting structure takes the form of a fixture 29, the lower central portion of which is of the nature of a hub 31 that has a central opening 32. The support 29 includes a radially extending portion 33 which, at its end, extends upwardly to form an arm 34. This arm is curved inwardly to form an upper integral hub 35 having a circular opening 36 on center with the opening 32. Adjacent the lower end of the arm 34 is permanently secured a radially extending bracket 37 which rests on a resilient block 38 that is in turn carried by an inclined member 39. A bolt 41 serves to join bracket 37, block 38, and member 39. Two additional brackets (not shown) on the top of the gear housing are supported by additional blocks 38 and members 39 and provide a three-point suspension for the mechanism within the cabinet. Secured to the lower end of the hub 31 of the support 29 is a gear housing 42. This housing, in Fig. 1 of the drawing, is partly broken away to disclose a portion of a rotatable plate 43 having an upstanding cam rim 44 that is so located as to underlie the opening 32.

Mounted in the opening 36 of the upper hub 35 is an elongated tubular member 46. This member extends downwardly beneath the hub 35 a predetermined distance and is threaded at its lower end to receive a nut 47. An expansion spring 48 encircles the member 46, its upper end bearing against the under edge of the hub 35 and its lower end bearing against the upper edge of the inner race of a bearing 49. The outer race of this hearing mounts a clutch pulley 51, having a rim 52 with which a driving belt 53 is engaged. The tubular member 46 projects upwardly through the collar 21 and serves as a hollow supporting column for structure that mounts the clothes recep tacle. The reinforced neck 19 serves as an upper endstop for a spacing sleeve 54 which encircles the member 46, the lower end of this sleeve resting upon the upper edge of the hub 35.

The tubular member 46 carries a drive sleeve 55. The upper end of this sleeve has resilient operative connection with the upper end 56 of a hub or center post 57 which includes a circular base flange 58 that constitutes the central base portion of the clothes re ceptacle 59. It will be understood that when the sleeve 55 is rotated by means hereinafter described, the receptacle rotates therewith. For present purposes of description, the receptacle 59 includes a circular side wall 61 and a base 62. This base is formed with a circular opening, the rim of which rests on and has watertight securement to the ledge 63 of base flange 58. Adjacent the ledge 63, the base of the hub 58 is reinforced downwardly, as indicated at 64, and a series of drain openings 66 are made therethrough. These openings provide for the flow of liquid from within the receptacle to the space beneath the receptacle and within the upper compartment 11. It will be noted that the openings 66 are aligned with the gasket 28 and it is obvious that when the receptacle is moved downwardly from the position of Figs. 1 or 2 to the position shown in Fig. 6, said gasket serves as a seal or closing valve for said drain openings.

The sleeve 55 projects below the lower end of the tubular member 46 and a short distance into the hub 31. A ring 67 or other suitable means provides a shoulder or ledge at the lower end of this sleeve on which is supported the inner race of a bearing 68. Directly above the bearing 68 is a collar 69 having a bottom inturned flange 71 that bears against the upper edge of the inner race of the bearing 68. The upper end of this collar is radially flared, substantially as indicated at 72. Within the collar 69, and surrounding the sleeve 55, is a tubular clutch member 73. The lower end of this member rests on the collar flange 71 and adjacent said end, suitable pins 74 are provided which secure the member to the sleeve. Extending from the upper end of the member 73, downwardly a little greater than half its length, are diametrically opposite slots 76. At the base of each slot a part of the member wall is cut away to form a continuing horizontal slot 77. The base wall of the slot 77 is horizontal, whereas the upper wall 78 thereof is inclined downwardly from the vertical slot 76 to the closed end 79. These slots are identical, the horizontal parts thereof extending in a common direction around the member.

A cylindrical member 81 serves in part as a housing for the collar 69 and a clutch member 73. The lower end of this housing is inwardly flanged, as at 82, and is secured to the upper edge of the lower hub 31. The upper edge of this housing terminates in an outwardly directed horizontal flange 83. It will be noted that the flange 83 is spaced from, but directly beneath, a horizontal flange 84 of the clutch pulley 51. A clutch plate 86 includes a horizontal rim 87 located between pulley flange S4 and the housing flange 83. Material 88 is applied to the upper and lower faces of this rim and suitably serves in the driving and braking operations of the device. This material, as indicated in the drawing, may be secured to the rim in any manner, such, for example, as through the use of rivets 89. From the rim 87, clutch plate 86 is radially, downwardly inclined and terminates in an inner rim 91. Directly beneath this inner rim is located a clutch locking cup 92 that is secured to rim 91 in any convenient manner, as by rivets 94. The lower edge of cup 92 is inwardly flanged, as at 93. At diametrically opposite points, these flanges continue in the form of lugs 90 which project into the slots 76.

The receptacle drive sleeve 55 serves to enclose a drive shaft 95. The upper end of this shaft projects beyond the end of the sleeve 55 and mounts a gear 96. The upper end of a post 97 of an agitator 98 mounts a ring gear 99, the circumferential edge of which supports the base of an enclosing cap 100. These gears constitute a clutch for engagement or disengagement of the agitator with the oscillating shaft 95. Referring to Fig. .1, this clutch is shown to be disengaged and the agitator rendered nonostlill la i H W9 when the shaft 95 is moved downwardly, gear 96 thereon engages ring gear 99 and in this manner oscillation of the shaft is transmitted to the agitator. Suitable bearings (forming no part of the invention) mount the agitator in substantially the relationship shown in the drawing with respect to the hub 57 of the receptacle. The lower end of shaft 95 extends downwardly beyond the end of sleeve 55 through hub 31 and terminates within the gear housing 42. Secured to this end of the shaft is a gear 101 which is movable into and out of full mesh with an oscillatable gear segment 102 when the shaft is vertically adjusted for the purpose of engaging or disengaging the agitator gears. Directly above gear 101, and also secured to the shaft 95, is a cylindrical member 103, the walls of which have operative fit with the walls of the opening 32 of hub 31. The member 103 has a lower neck 104 that abuts the upper edge of gear 101. Exteriorly, this neck connects with the cylindrical walls through an inclined surface 105 which is provided as a contact area for the cam rim 44. Within the member 103 a boss-like extension 106 serves as an abutment for a collar 107 that is secured to the shaft by pin 108. In this manner the cylindrical member 103 is secured against any upward movement relative to the shaft 95. The space 109 within this member accommodates an expansion spring 110. The lower end of this spring bears against the interior bottom wall of the member, whereas the upper end thereof engages the horizontal flange of a collar 111. This horizontal flange continues radially outwardly beyond the spring in an offset rim 112 which serves to space the upper end of the cylindrical member 103 from the outer face of bearing 68.

Attention is now directed to structure which is intended to prevent the start of one operation in a washing cycle before the previous cycle has been completed, this being without regard for any manipulation by an operator of the device. A vertical slot 113 is made in the wall of the opening 32 of hub 31. Mounted in this slot is a spring clip 114. This clip extends substantially the full length of the slot and its upper end is flanged, as at 116, to overlie the upper edge of the outer race of bearing 68. Near its lower end, the clip is formed with an inwardly offset shoulder 117, the end 118 providing a leg of such proportions as to extend said shoulder beyond the slot 113 into the path of the inclined surface 105 of the cylindrical member 103, substantially as illustrated in Figs. 1, 2, and 4. It will be evident that this clip serves to prevent axial separation of the cylindrical member 103 from its near proximity to the bearing 68 during certain stages of operation of the device.

The structure above described relates particularly to provision of improved clutch mechanism for connecting either the receptacle or the agitator with an appropriate drive. Also, the invention discloses means for promptly stopping rotation of the receptacle upon completion of a spinning operation and the preventing of such receptacle from assuming another position before complete cessation of rotation and preparatory to a further sequential laundering operation. Further, the invention provides an additional safeguard against commencing a sequential operation before all the operative parts have completed the previous operation and are set for a change in position or relationship to commence a further operation. With this in mind, attention is now more particularly directed to operation of the structure of the invention.

In explaining the operation of the invention, it may be assumed that a washing operation has taken place, the receptacle drained, and the parts positioned for a spinning operation whereby water is extracted from the clothes in the receptacle. At this stage in the cycle, the parts appear substantially as shown in Figs. 1 and 2 of the drawing. Herein it will be noted first that the agitator clutch, located in the top of the agitator post, is disengaged and that the material 88 of the clutch plate 86 bears against the under face of the pulley flange 84. Of course, the belt 53 is connected with a suitable motor and continuously rotates the pulley 51. Lugs 90 of the locking cup 92 are within the vertical slots 76 of the member 73 and bear against one wall thereof. Also, it is to be noted that a high portion of the cam rim 44 is in contact within the inclined surface 105 and, through various parts, such as member 103, bearing 68, collar 69, and sleeve 55, the

receptacle is held raised from the seating plate 24. It may now be assumed that the timing mechanism (not shown, nor forming a part of the invention) has designated a completion of the spinning operation, or that an operator has manually advanced the cycle, and that the parts. of the device are to next assume a position such that a rinsing operation may take place. It will, of course, be understood that a rinsing operation, insofar as the device is concerned, causes the parts to assume the same position and function in the same manner as they would in a washing operation. Thus, the rinsing operation would consist of closing the openings in the receptacle, filling it with water, and agitating the clothes in this water by oscillation of the agitator. When the spinning operation is completed, the timing mechanism functions to effect rotation of plate 43, thus causing a lower portion of the cam rim 44 to be presented to the inclined surface 105. In this manner, the shaft 95, drive sleeve 55, and associated parts move from their relative positions of Fig. 2 to that of Fig. 4. Comparison of these figures indicates, first, that the clutch plate 86 has moved out of contact with pulley flange 84 and into contact with flange 83 of the fixed cylindrical member 81. Thus, a braking action to slow down and stop rotation of the receptacle immediately takes place following disengagement of the plate 86 from contact with the pulley 51. position of the parts, preparatory to commencing the next sequential operation, cannot take place until rotation of the receptacle has absolutely ceased. Thus, as braking action is applied to the receptacle, the force of such action causes the lugs 90 of the clutch locking cup to move from the position of Fig. 2 to that of Fig 4 wherein they lie against the inclined surfaces 78 and the slot end wall 79. Due to the continuing intermediate height of the cam rim 44, the various parts of the mechanism remain in the position of Fig. 4 until the receptacle has completely ceased rotation, and for a short space of time thereafter, to enable drainage of any water remaining in the receptacle.

The timing mechanism governing the operative steps may function at any time now to rotate plate 43 to bring a still lower portion of the cam rim 44 into position beneath the inclined surface 105. When such rotation of the plate has taken place, support for the receptacle is withdrawn. The weight of the receptacle may now force the sleeve 55 downwardly and this movement, transmitted to the clutch member 73, causes the inclined surfaces 78 of the clutch locking cup to ride downwardly on the lugs 90 and in so doing produce a slight reverse rotation of the receptacle. This movement of the lugs up the inclined surfaces 78 and well into the vertical slot 76, enables lowering the receptacle into seating position on the plate 24 and the closing of drain ports or openings 66. Simultaneously with the downward movement of sleeve 55, member 103 moves downwardly and causes the leg 118 of clip 114 to become free of the slot 113. The shoulder 117 is thus removed from beneath the inclined surface 105 and member 103 and shaft 95 travel still further downwardly to fully engage gear 101 with gear segment 102. Such movement of these parts is initiated by expansion of spring 110. This further travel of shaft 95 causes gear 96, on the upper end thereof, to move into mesh with the ring gear 99 of the agitator 97. It will be understood that gear segment 102 and shaft 95 are at all times oscillating while the machine is in operation and, consequently, the agitator is immediately set in motion by engagement of the clutch gears 96 and 99. From the foregoing it is apparent that the receptacle must completely cease rotation before it becomes seated to close the ports or openings 66, and only following this can the clutch be engaged to actuate the agitator. The position which the operative parts now assume relates to the rinsing operation in the cycle of the machine. This operation is for the purpose of subjecting the washed, drained, and spun clothes to a clear-water rinse. Operation of the agitator serves to dislodge any extraneous matter that may cling to the clothes following the washing operation.

The neXt or last step in the washing cycle is the operation of draining the water from the receptacle and spinning dry the rinsed clothes. The timing mechanism has been functioning to continuously present a low portion of the cam rim 44 to the surface 105. However, as the time for the rinsing operation draws to a close, a portion of intermediate height of the cam rim is presented to the surface 105. In this manner, the operative parts Change in operative are adjusted to and assume the position shown in Fig. 4 of the drawing. Herein the agitator clutch has been disengaged and the receptacle raised sufficiently from off the suppgt 24 to permit drainage through the ports of openings 'l he above description of operation of the invention presupposes that an operator, having started the machine through its normal operative cycle, has not disturbed or changed the time period of any of the operations, or changed back to a preceding operation, or advanced to a successive operation. It frequently occurs, in the laundering of various types of articles, that an operator will wish to shorten one of the pre-set operative periods, or repeat such an operative period. This is accomplished by manual manipulation of a dial or knob connected with the machine timing mechanism and, not being new to the present invention, is not shown. However, an operator, not being familiar with the various mechanisms of the machine, could unwittingly shift from one operative step to another in such manner as to damage the machine parts or the clothes being laundered. As has already been brought out, the present mechanism is intended to prevent such a condition and, in order that the structure by which the parts are required to perform their proper sequential function, regardless of whether the sequence is manual or automatic, a brief description of manually changed timing is presented.

It may first be assumed that with the operative parts in the position of Fig. 6, wherein a washing operation is in progress, an operator wishes to immediately change to a spinning operation without awaiting the end of the agitation period. The manual control is manipulated to rotate the plate 43 to bring the high portion of the cam rim 44 into position beneath the inclined surface 105, bringing the parts into the position shown in Fig. 2. In the course of upward movement of the various parts, they will pass through the positions shown in Fig. 4. It will be observed that the member 103 has been moved upwardly sufficiently to re-locate the shoulder 117 of spring clip 114 beneath the inclined surface 105, and that this movement is transmitted through sleeve 55 to the receptacle 59, thus raising the receptacle and opening ports 66 and allowing drainage of any liquid contained in said receptacle. At this point, it will be noted that the clutch plate 86 is not as yet engaged with the drive pulley 51 and, therefore, the receptacle has not yet commenced rotation. Completing upward movement of the member 103 compresses spring 110 located therein, further raises the receptacle 59, causes lugs to locate in the base of the slots 76, and the clutch plate 86 to engage the under face of the pulley 51. From the foregoing it is apparent that even by manual change the parts of the mechanism are required to first disengage the agitator clutch, then raise the receptacle and re-set the spring clip 114. These parts, of course, must first occupy the position of Fig. 4 before a spinning operation can take place in order that the operator of the machine, once a spinning operation is in progress, will be enabled, without damage to the machine parts, to revert again from a spinning operation to an agitating operation.

If it is assumed that a spinning operation is in progress, and an operator of the machine, to shorten the normal time period thereof, wishes to go directly into a washing operation, the manual control is manipulated to rotate the plate 43 and withdraw the highest portion of the cam rim 44 from beneath the inclined surface of the member 103. This withdrawal of the support of the cam rim only allows the receptacle to be lowered to the position of Fig. 4 and efiects immediately a braking action of the rotation of the receptacle. As has already been stated, the receptacle cannot lower upon the fixed seat until complete rotation has ceased and lugs 90 have moved out from beneath the inclined surface 78 of the clutch member 73. When these lugs have become free of this member, the receptacle will have ceased rotation and can move onto the fixed seat and, with such movement, the agitator clutch becomes engaged.

Although applicant has shown and described only one form of the invention, it will be understood that variations in the structural details of the safety mechanisms may be made and are contemplated as being within the spirit and scope of the invention insofar as they are set out in the annexed claims.

Having thus set forth my invention, what I claim as new and for which I desire protection by Letters Patent is:

1. In a washing machine, a rotatable receptacle, a rotatable sleeve mounting said receptacle, an agitator carried by and located within said receptacle, an oscillatable shaft for said agitator mounted in said sleeve, a clutch operable to transmit oscillation of said shaft to said agitator, means for supporting and axially moving said shaft in a direction to effect disengagement of said clutch, bearing means on said shaft providing support for said receptacle, a power driven pulley mounted for free rotation about said sleeve, a further clutch operable to transmit rotation of said pulley to said sleeve, a braking carried by said further clutch operable to terminate rotation of said receptacle upon disengagement of said further clutch, and means associated with said further clutch for withholding engagement of the agitator clutch until rotation of said receptacle has been terminated by said brake.

2. In a washing machine, a rotatable receptacle, a rotatable sleeve mounting said receptacle, an agitator carried by and located within said receptacle, an oscillatable shaft for said agitator mounted in said sleeve, a clutch operable to transmit oscillation of said shaft to said agitator, cam means so associated with one end of said shaft as to support said shaft and being operable to effect axial movement thereof in a direction to engage and disengage the agitator clutch, means providing axial support for said sleeve on said shaft, said means including structure enabling limited relative axial movement of shaft and sleeve, a power driven pulley mounted for free rotation about said sleeve, a clutch operable to transmit rotation of said pulley to said sleeve, and means operable to secure said shaft against axial movement to an extent to prevent engagement of the agitator clutch upon withdrawal of said cam support and during rotation of said receptacle.

3. In a washing machine, a rotatable receptacle mounted for axial movement into stationary and rotatable positions, an agitator in said receptacle mounted for oscillating movement, a clutch operable to connect said agitator with an oscillating drive member, a further clutch operable to connect said receptacle with a rotating drive member, means for terminating rotation of said receptacle when said receptacle clutch is disengaged and further means preventing engagement of said agitator clutch until rotation of said receptacle has ceased.

4. In a washing machine, a rotatable receptacle mounted for axial movement into a lowered stationary position and a raised rotatable position, an agitator in said receptacle mounted for oscillating movement in the plane of rotation of said receptacle, a clutch operable to connect said agitator with an oscillating drive member, a further clutch operable to connect said receptacle with a rotating drive member, said further clutch including means for successively terminating rotation of said receptacle and enabling axial movement thereof into lowered stationary position.

5. In a washing machine, a rotatable receptacle, a rotatable sleeve mounting said receptacle, an agitator carried by and located within said receptacle, an oscillatable shaft for said agitator mounted in said sleeve, a clutch operable to transmit oscillation of said shaft to said agitator, cam means so associated with one end of said shaft as to support said shaft and being operable to effect axial movement thereof in a direction to engage and disengage the agitator clutch, extendable means providing axial support for said sleeve on said shaft, and further means operable to control extension of said means and relative axial movement of said sleeve and shaft.

6. ln a washing machine, a rotatable receptacle, a rotatable sleeve mounting said receptacle, an agitator carried by and located within said receptacle, an oscillatable shaft for said agitator mounted in said sleeve, a clutch operable to transmit oscillation of said shaft to said agitator, cam means so associated with one end of said shaft as to support said shaft and being operable to effect axial movement thereof in a direction to engage and disengage the agitator clutch, extendable means providing axial support for said sleeve on said shaft, a furthcr clutch operable to connect said receptacle sleeve with a rotating drive member, said further clutch having interfitting parts encircling said sleeve and cooperating to successively terminate rotation of said receptacle and free said extendable means for operation to effect movement of said sleeve to lower said receptacle into stationary position.

7. In a washing machine, a rotatable receptacle, a rotatable sleeve mounting said receptacle, an agitator carried by and located within said receptacle, an oscillatable shaft for said agitator mounted in said sleeve, a clutch operable to transmit oscillation of said shaft to said agitator, cam means so associated with one end of said shaft as to support said shaft and being operable to effect axial movement thereof in a direction to engage and disengage the agitator clutch, extendable means providing axial support for said sleeve on said shaft, a further clutch operable to connect said receptacle sleeve with a rotating drive member, said further clutch including a pair of members rotatable together when said further clutch is engaged and being relatively axially movable when said further clutch is disengaged, the relative axial movement of said pair of members enabling operation of said extendable means to enable axial movement of said sleeve to lower said receptacle into stationary position.

References Cited in the file of this patent UNITED STATES PATENTS 1,725,995 Myers Aug. 27, 1929 2,361,767 Hays Oct. 31, 1944 2,561,257 Woodson July 17, 1951 2,574,617 Bryant Nov. 13, 1951

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