US3083558A - Clothes washing machine having a gyratory suspension system - Google Patents

Description

April 2, 1963 Filed July 7, 1961 P. W. DOUGLAS CLOTHES WASHING MACHINE HAviNG A GYRATORY SUSPENSION SYSTEM 4 Sheets-Sheet l I I mlll lll kl l I l ll|l||\ I Wm! union W 5 I Ill F I I I 1 I i IMW II I r 1 52 I i 92 0" ii I m l i. W! i ll i 5 n I y 1 I l 7'6 1 I; I [012' I ,7 I i i l I H Maw 97 p i I I ii 3 8x1 1 .29 uh! H) 9 52 27 /9 I r u el n El INVENTOR peyro/u \V DOUqLA ATTORNEY April 1953 P. w. DOUGLAS 3,083,558

CLOTHES WASHING MACHINE HAVING A GYRATORY SUSPENSION SYSTEM Filed July 7,, 1961 4 Sheets-Sheet 2 IN V EN 1 OR p2 Yro/v M 000 145 ATTORNEY April 2, 1963 P. w. DOUGLAS CLOTHES WASHING MACHINE HAViNG A GYRATORY SUSPENSION SYSTEM Filed July 7, 1961 4 Sheets-Sheet 3 INVENTOR peyrou \l/ DOUC LA BY fimjz/fl v ATTORNEY April 1953 P. w. DOUGLAS 3,083,558

CLOTHES WASHING MACHINE HAVING GYRATORY SUSPENSION SYSTEM Filed July 7, 1961 4 Sheets-Sheet 4 j" 5 7 INVENTOR psyrou Il/ DOUQLAfi ATTORNEY BY 7FLZAM/7P47- 7 rare This invention relates to improvements in domestic washing machines of the type wherein both washing and extracting operations are accomplished through the use of a single tub. More particularly, the invention is directed to a gyratory suspension system for mounting such a tub.

Many washing machines of the class to which the present invention relates include off balance systems or struc tures for controlling and supporting the tub in a substantially vertical position through use of hydraulic shock absorbers, springs, snubbers, balancers, or, in some instances, parallel to floor shock absorbing pads. All of these systems or devices, or some variation thereof, would seem to have a common objection; that is, there is an ever present tendency to transfer any dynamic off-balance forces of the tub, during a spinning operation, directly to the cabinet, or frame, in which the entire mechanism is housed. This tends to produce an over-all vibration of the frame, and, in many instances, is sufficient to cause the machine to travel or walk along the floor unless rigidly anchored. Substantially all vertical washers have their plane of damping parallel to the floor thereby causing the forced off-balance load or the ofi-balance amplitude of gyration to more or less skid with the plane of the floor. Thus, off-balance amplified amplitudes will travel outwardly from such a pivot point, causing considerable travel, even to the extent of partially or completely throwing the tub out of period and create undue forced harmonics should clothes happen to have been poorly distributed prior to commencing a spinning operation. In many machines the plane of mechanically controlled damping is parallel to the floor and, thus, the pivoting of all parts, including the cabinet frame and base, has the fioor as its pivotal focal point. It has been successfully demonstrated in the course of developing the present invention that the more direct vibrations are confined to the vertical, as distinguished from the horizontal, the more satisfactory is the damping action which is necessarily applied to counteract any unbalance of clothes d-uring a spinning operation.

It is an object of the present invention to provide an elastic vertical support or mounting for a washing machine tub utilized in both agitating and spin drying clothes that minimizes forced unbalance due to uneven load distribution in more or less a free state of vibration without mechanical harnessing.

It is another important object of the invention to provide a stabilizer support for a washing machine tub that combines a vertical self-centering means whereby to greatly reduce nutation or off-center vertical sag due to the tub being unevenly loaded with water and clothes during a washing cycle.

Additionally, it is of importance to provide a support for a washing machine tub that is capable of so controlling and supporting any load within the capacity of the tub that it may be quickly and easily washed and spin dried.

And it is considered of great importance that the present invention provides a support for a washing machine tub that consists of parts so designed and arranged as to be extremely economical to manufacture, easy to install, and readily serviceable.

Other objects and advantages of the invention will be Patented Apr. 2, 1963 more fully understood and appreciated from a consideration of the following specification, taken in conjunction with the accompanying drawings; and in which FIG. 1 is a rear view of a cabinet enclosed washing machine, certain of the enclosing parts being broken away to show, partly in section, the general organization of one form of the invention;

FIG. 2 is an enlarged fragmentary vertical sectional view of the tub mounting, being taken substantially as suggested by the line 2-2 of FIG. 3;

FIG. 3 is a horizontal sectional view of the mounting and drive means, being taken substantially as suggested by the line 33 of FIG. 1;

FIG. 4 is an enlarged fragmentary vertical sectional View of the stabilizer portion of the mounting structure.

FIG. 5 is an enlarged fragmentary vertical sectional view of the flexible mount of the structure;

FIG. 6 is an exploded elevational view of the mounting and stabilizer structure showing the parts prior to their assembly with tub and drive shaft; and

FIG. 7 is an exploded view showing the tub support, spin tubes and drive shaft.

Referring more particularly to the drawings, the reference numeral 16 is employed to generally designate a cabinet for enclosing a washing machine embodying the structure of the invention. The cabinet 10 includes front, rear and side walls 11, 12 and 13, respectively. The top wall 14 of the cabinet has a central opening 16 fitted with a cover 1'7. The cabinet also includes a base 18 marginally defined by depending flanges 19 which are suitably permanently secured to the lowermost portions of the cabinet walls. At each of the four corners of the cabinet, brackets 21 are provided, with which the threaded portions 22 of leveling type feet 23 are engaged. Since the Weight of the entire machine is carried by the base 18, it is suitably reinforced, such, for example, as by means of a circular ridge 24 and inner upwardly opening channel 25. As will be further set out, the ridge 24 serves as a circular seat and support for structure having to do with controlling tub balance. Centrally of the base 18 is an opening 26 in which is located a part of the mounting structure hereinafter described.

The tub mounting structure comprises three basic elements which are a stabilizer 27, flexible mount 28, and an anti-notation cone 29. The stabilizer (see FIG. 4) comprises a ring 39 formed from material of the nature of Buna rubber. The periphery of this ring is bonded to a collar 31 which projects through the base opening 26 and includes a radially outwardly extending flange 32 that laps the walls of this opening and is secured thereto in any substantial manner, as by bolts and nuts 33. The ring 30, being made of self-damping rubber or the like, has great damping characteristics within itself and is provided with a central opening 34, the wall of which is bonded to a sleeve 36 which extends through and beyond the ring. The upper end of the sleeve 35 is internally threaded to engage the lower threaded end of a stationary tube 37. As may be seen in the drawings, this tube projects approximately half way into the ring 30, leaving an area therebeneath for other structure hereinafter described.

Above the stabilizer 27 is located the flexible mount 28 which comprises a ring 38 formed from a neoprene type rubber which has great bonding characteristics as well as strength and this ring is bonded along its circumference to a sleeve 39. The upper end of this sleeve has a radially outwardly directed flange 41. Centrally, the ring 38 is formed with an opening 42 in which a sleeve 43 is located and bonded to said ring and extends slightly above it as indicated in FIG. 5. A snap ring 4 engaged with the stationary tube 37, rests on the upper end of sleeve 43; thus weight carried by the tube 37 is transmitted through ring 44 to the mount 28 and through sleeve 36 to the stabilizer 27.

, thereof resting on the rim 46 and being secured thereto,

as by an appropriate numberof bolts and nuts, indicated at 48. The cone, as is clear in FIGS. 1 and 2, has a vertical step 49 from which a further cone segment 51 continues. From the segment 51, the cone terminates in a horizontal base 52 that is of the nature of a circumferential channelhaving a base wall 53 and an upstanding edge flange 54. The base channel 52 is of such proportions and diameter that it will be superposed on the ridge 24 of the cabinet base 18. Interposed between the concentric surfaces of the ridge and the channel base wall 53 is a friction strip 56 which is preferably secured to the ridge 24. This strip serves as a vibration triangulator with respect to the flexible mount 28, tube 37 and stabilizer 27.

As shown in FIG. 6, the cone 29, just above the step 49, has a slot 57. There are three such slots triangulated about the cone. A generally T-shaped strap 58 is joined to the cone by projecting the stem 59 through slot 57 from the cone inside. This projects the stem 59 outwardly just above the step 49 at a radially outwardly inclined angle. (See FIG. 2.) A set of three straps 61, each having a hook 62, are attached thereby to the base 18. Springs 63 connect stems 59 with straps 6'1 and, by reason of this connection, the base 52 of the cone 29 is urged and yieldingly drawn down onto the strip 56.

Within the cabinet is a collector tank 64 which has a top 65 having an opening 66 therethrough that, in general, corresponds to the opening 16 in'the cabinet top wall 14. This tank has a bottom wall 67, centrally of which is an opening 68 defined by an upturned rolled flange 69. A suitable drain spout 70 is provided in the bottom 67 for connection, in conventional manner, with a drainage pump later described.

A tubular member 72 encloses and is secured to the upper end of the stationary tube 37. This member is radially enlarged at its upper end 73 and mounts an annular plate 74 which, under certain circumstances of operation of the machine, serves as a support for the clothes and water containing tub and as a brake disk by which to stop rotation of the tub following a spinning operation. Within the plate 74 is a seal 71 which, as shown in FIG. 2, serves to prevent any liquid within the tank 64 from finding its'way into the sleeve 37. An annular groove 75 in the lower portion of the tubular member 72 receives the upper reinforced rim 76 of a resilient boot '77. The lower return-folded portion 73 of this boot overlies the rolled flange 69 defining the tank base opening 63 and is suitably clamped thereto. The boot 77 serves to prevent escape of liquid from the tank 64 except by way of the drain spout 76.

As may be seen in FIG. 1, a liquid and clothes containing tub SZ'is provided. At its upper end, this tub includes annular inward and upward extending flanges 83 and 84 which define an outer ledge on which is secured an annular balance member 86. Conventionally, the tub inclines slightly inwardly toward its base 87. This base includes a series of annular, radially inwardly stepped up flanges 83 which terminate in an opening 89. The purpose of'this configuration in the base is to accommodate and match a transmission unit 91. This unit is fixed to the tub base and includes means for oscillating an agitator 92 located within the tub, as well as providing mechanism for spinning the tub. This location of the'transmission unit, togetherwith the weight of its structural and operative parts, provides an adjunct to the entire device in the control of the tub unbalance during spinning operations. The transmission unit 91, in itself,

forms no part of the present invention. However, details of the manner in which it is constructed and functions are described in the Alvin Lodge Patents No. 2,733,- 610, dated February 7, 1956, and No. 2,841,260, dated July 1, 1958. Projecting upwardly through a neck portion 93 of the transmission is a shaft which mounts the agitator 92. A neck-like housing 94 depends from the lower flat base $6 of the unit 91 and this neck restson the upper end of a sleeve 97 which is enclosed by the stationary tube 37. Suitable bearings 12% 121 center the sleeve 97 within the tube 37. An annular brake shoe 192. is carried by the flat base 96 of the transmission unit 91'. When the tub has completed a spinning operation, mechanism within the transmission lowers the tub, causing the brake shoe 102 to engage the plate 7 and stop rotation of the tub.

Within the tube 37 is located a drive shaft 103. The upper end of this shaft projects into the depending housing 94 of the transmission in substantially the identical manner shown in the above referred to Lodge patents. The lower end of the shaft 193 is of reduced diameter, as at 1&4, thus providing an annular shoulder with which the inner ring of a bearing 1% is engaged. Beneath this bearing is a suitable oil seal 107 and a lock ring 198 that holds the bearing and seal against downward axial movement with respect to the sleeve 36 of the stabilizer 27. That end of the shaft 103 extending beyond the sleeve 36 mounts a pulley 109.

As shown, a motor 111 is mounted on the base 18,

eing preferably located at the right front portion thereof. This location is very advantageous when it is considered that wall 11 in FIG. 3 is the front of the machine. The motor is mounted on a pivotal base 112, thus enabling adjusting the distance between the pulley 113 thereof and pulley 109 for installation and removal of a V-belt 114, as well as a belt 116 utilized to operate a pump 117. It will be appreciated that with a removable cover in the lower portion of the front cabinet wall 11, access may be quickly and easily had, not only to the motor, but also to the belts in the event they become damaged and require replacement.

It will be understood that the motor 111 is of the reversing type and that when rotated in. one direction,

mechanism within the transmission unit 91 causes the agitator 92. to oscillate, and rotation of the motor in the opposite direction causes mechanism within the unit to produce a lifting force which raises the tub 82 from off the plate 74 and causes it to spin. Obviously, during a wash or rinse operation, the tub is stationary and there is no serious concern with vibration control. However, there is a tendency for the tub to nod, tilt or leanaway from its vertical axis and the anti-nutation cone efl'ectively overcomes this'possibility. When the tub is raised into spin position and supported entirely by'the shaft 103, the water within the tub, together with the unbalanced weight of clothes, presents a considerable problem in vibration control. This is true not only during the period required to attain suflicient speed to dry clothes, but also during the entire spinning operation.

The present supporting structure has been developed with the idea of presenting a concentric design of all operative parts. Starting at the lower end with'the drive pulley 1&9, stabilizer 27 and flexible mount 28, it will be observed that the upwardly continuing structure, including shaft, sleeves, tub, and dynamic weights thereon, and even to the agitator cap, eliminates any off balanced restraining motion. Because of the absence of such restraining forces, the sign pattern of vibration is circular. In addition to the stabilizer 27 and flexible mount ,28, the inverted cone 29, in its peculiar arrangement, not only adds to the efliciency of damping vibrations but actually mainly stabilizes the entire tub when it is loaded with water and clothes in either the washing or spinning position. In other words, it keeps the tub in :a vertical position at all times and is found to be a great addition in preventing the tub sagging to one side or another during the washing stage. It will be noted that the cone is spring loaded and, through springs 63, applies a constant pressure on the frictional strip 56.

As may be seen, any excess path of vibration of the entire device is in the vicinity of the transmission 91 and any unbalanced load in the tub will not only cause the stationary tube 37 to move, but the cone 29 as well. However, such vibration is in large part controlled by the stabilizer 27 and rubber mount 28 and any further or more aggravated unbalance is instantly controlled by contact with the cone 29 with one area or another of the strip 56. This action of the cone is effective in the vicinity of the transmission. It may therefore be stated that any tendency for vibration to set up and increase in amplitude is instantly damped to the point of safety and control by means of the arrangement and combined use of the rubber stabilizer, rubber mount and cone.

By way of further explanation of the action and effectiveness of the present structure, it is stated that the stabilizer 27 cooperates with the cone 29 to suppress mutation; that is, by reason of its location and self-damping characteristics, any tendency of that portion of the structure above the vertical flexible support 28 to lean or nod, even with a loaded tub, is contained or absorbed. The flexible support 28 includes a rubber ring that not only bonds securely to the inner and outer sleeves 43 and 39, but has such inherent strength that it easily supports the weight of a loaded tub and all other structure associated therewith. Since the support 28, through cone 29, is sustained by the reinforced cabinet base 18, any load transmitted to it through sleeve 37 will be distributed over a large area of the base 18 through the cone rim 52.

Since the rim of cone 29 rests on the strip 56 of the upper base member 38 and, by reason of the arrangement of springs 63, it may be stated that this portion of the structure has some slight load factor when the tub is at rest. However, the real purpose of the cone is to stabilize the tub and contents; that is, keep the tub in a substantially vertical position. Without this cone, the tub, with or without load, might tend to sag while in washing position and place unnecessary strain on the stabilizer 27 and support 28. As is clear from the drawings, the cone 29, through support 28, is so joined to the stationary tube 37 that it is caused to physically react to any tendency of the tub to lean or tilt. Of course, with the tub at rest, the cone merely prevents leaning. However, when the tube enters a spinning cycle, it invariably contains an unbalanced load which would immediately tend to set up vibration, the amplitude of which could increase to an unsafe extent. Through provision of the cone 29 and associated parts, any off balance of the tub is prevented establishing uncontrollable vibrations by reason of the cones contact with the base 18 at each and every point where vibration may start.

Although applicant has shown and described only one form of his invention, it will'be apparent that variations and modifications of the structure may be made and are contemplated as being within the spirit and scope of the invention as and to the extent 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 having a clothes receptacle rotatable about a vertical axis, structure for supporting said receptacle during rotation comprising a base, remote from the bottom of said receptacle, a resilient member on said base engaged with and mounting the lower end of a receptacle sustaining shaft, and a cone-like device having its rim supported on a cooperative area of said base with the neck portion thereof concentric with and surrounding said shaft at a point above said member and a second resilient member adjacent said neck portion and surrounding said shaft for supporting said receptacle, said second member cooperating with said first resilient member to prevent uncontrolled vibrations and provide stable operation of the machine.

2. In a Washing machine having a clothes and liquid receiving receptacle rotatable about a vertical axis, structure for supporting said receptacle comprising a co-axial sleeve and a drive shaft depending from said receptacle, a cone-like device mounted on the base of said machine, said device including flexible means engaged with said co-axial sleeve at a point remote from said base for transmitting vertical weight and lateral forces to said device and serving as a nutation suppressor when said receptacle is stationary, and resilient means on said base concentric with and serving to mount and stabilize the lower ends of said sleeve and shaft.

3. In a washing machine having a clothes and liquid receiving receptacle rotatable about a vertical axis, structure for supporting said receptacle comprising a depending drive shaft and co-axial sleeve, a base spaced below said receptacle, a vertically centering device located above said base and remotely below said receptacle, said device, in part, consisting of a cone-like member resting on said base, spring means urging the lower portion of said member into frictional contact with said base, and resilient means on the upper portion of said member encircling and intermediately supporting said sleeve, above said base, and second resilient means as a lower end support for said shaft and cooperating with said first resilient means and said cone-like member to balance the operation of the machine.

4. In a Washing machine having a clothes and liquid receiving receptacle rotatable about a vertical axis, struc ture for supporting said receptacle comprising a depending drive shaft and co-axial sleeve, a base spaced below said receptacle, a laterally slideable device concentric with said sleeve and mounted on said base, spring means urging said device into frictional contact with said base and limiting lateral movement thereof, means on said base concentric with said device mounting the lower ends of said sleeve and shaft and providing for limited pivotal movement, and resilient means remote from said base means and carried by said device, said resilient means cooperating to prevent nutation when said receptacle is stationary or contains uneven load distribution when said receptacle is rotated. V 5. In a washing machine as claimed in claim 3, wherein the cone-like member functions to counteract sagging of the receptacle when stationary during a washing operation.

6. In a washing machine as claimed in claim 2, wherein the device is slidable to an extent permitted by equally spaced tensioning members attached to said device and the base of said machine.

7. In a washing machine having a clothes and liquid receiving receptacle rotatable about a vertical axis, mounting structure for said receptacle comprising a supporting means having a generally horizontal rigid base, a nonrotative tubular member supporting said receptacle and extending axially thereto, a drive shaft extending axially through said tubular member having a drive means beneath said base for agitation and spin operations, said shaft supporting said receptacle in the spin operation, a member arranged around the lower portion of said tubular member and mounted on said base, said member extending upwardly to an adjacent intermediate point of said tubular member, a first and second resilient member surrounding said tubular member, said first resilient member being mounted in said base and resisting deflection of said receptacle during an agitation operation, said second resilient member being mounted axially with and above said first resilient member and resisting any orbital outof-balance motion of said receptacle during a spinning operation, and spring means connecting said second resilient member with said rigid base whereby to absorb 3,oss,55s

' J vertical vibrations and balance horizontal forces through said member and said base.

8. in a washing machine having a clothes and liquid receiving receptacle rotatable about a vertical axis, mounting structure for said'receptacle comprising a supporting means having a generally horizontal rigid base, a nonrota'- tive tubular member supporting said receptacle and ex-' tending axially thereto, a drive shaft extending axially through said tubular member having a drive means beneath said base for agitation and spin operations, said shaft supporting said receptacle in the spin operation, a member arranged around the lower portion of said tubular member and mounted on said base, said' member extending upwardly to an adjacent intermediate point of said tubular member, a first and second resilient member surrounding said tubular member, said first resilient member being mounted in said base and resisting deflection of 'said receptacle during an agitation operation, said second resilient member being mounted axially with and above said first resilient member and resisting any orbital out-ofbalance motion of said receptacle during a spinning opera- 7 tion, and a thrust bearing carried by said base supporting said shaft and including support .for said receptacle during a spinning operation.

9. A vertical type of washing machine comprising a rigid base extending horizontally for supporting the washing machine on a floor, a tub having a vertical axis, means extending along the vertical axis for vertically holding said tub in agitating and spin operations, enclosure means arranged around the lower portion of said holding means and mounted on said base, said enclosure means extending upwardly to an adjacent intermediate point of said holding means, a first and second resilient bushing forming the sole support for said holding means with the first resilient bushing attachably supporting said holding means 'on said base and said second resilient bushing supporting said holding means on said enclosure means at said intermediate point for forming a resilient vertical support to absorb vertical vibrations and to balance horizontal forces through said enclosure means and said base.

10. A vertical type of washing machine comprising a supporting frame having a generally horizontal rigid base, a tub having a vertical axis, a non-rotative tubular member supporting said tub and extending axially thereto, a drive shaft extending axially through said tubular member and supporting said tub in a spin operation, drive means below said base for spinning and agitating the contents of said tub, a ball thrust bearing on said shaft beneath said tubular member and carried by said base for transmitting the axial thrust from said shaft to said base on the spin operation, a member mounted on said base and extending vertically towards said tubular member, a resilient bushing attached to said base and said tubular member adjacent said bearing to resiliently support said tubular member, said shaft and said tub and receive horizontal forces, a second resilient bushing attached to said member and supporting said tubular member at an intermediate point between said base and mediate point of said shaftlikemeans for transferring I forces applied to said upper end to said base, a first resilient means positioned between said base and said shaftlike means, a second resilient means positioned between said upper end of said support and said shaftlike means intermediate said tub and said first resilient means, said first and second resilient means forming the sole sup-.

porting means between said frame and said shaftlike means to absorb and balance forces created by the rotational motion of said tub.

12. A vertical type of material conditioning machine as set forth in claim 11 wherein said shaftlike means comprises an outer non-rotating tubular member mounted in said resilient means and supporting said tub thereon, an inner drive shaft with'bearing means for positioning said drive shaft in said base and imparting rotational motion to said tub.

13. A vertical type of material conditioning machine as set forth in claim 12 wherein said bearing means includes a thrust bearing at the lower end of the shaftlike means for rotatably supporting the drive shaft in said tubular member and transmitting axial forces to said tubular member below said second resilient means.

14. A vertical type of material conditioning machine as set forth in claim 13 wherein said thrust bearing is concentric to said first resilient means.

15. A vertical type of material conditioning machine as set forth in claim 11 wherein said shaftlike means comprises an outer non-rotating tubular member and an inner drive means, said outer member mounted in said resilient means to transfer forces thereto and said inner drive means coupledto said hub forimparting rotational motion thereto.

16; A vertical type of material conditioning machine as set forth in claim 11 wherein said support is mounted on said base for transference of forces thereto to balance the horizontal forces applied by said shaftlike means to said base through the first resilient means.

17. A vertical type of material conditioning machine as set forth in claim 16 wherein said support frictionally engages said base and spring means are uniformly arranged around said support and attached thereto and to said base for maintaining the centered relationship of.

said support to the vertical axis and to transmit the forces applied to said second resilient means to said base.

References Cited in the file of this patent UNITED STATES PATENTS 2,268,204 Dunham Dec. 30, 1941 2,375,635 Dyer May 8, 1945 2,645,108 Smith July 14, 1953 2,709,908 Altorfer et al. June 7, 1955 2,793,757 McWethy May 28, 1957 2,836,993 Johnson et al Iune'3, 1958 2,859,877 .Sisson Nov. 11., 1958 2,957,331 Bruckman Oct. 25, 1960 2,967,998 Smith n Mar. 28, 1961

Claims (1)

1. IN A WASHING MACHINE HAVING A CLOTHES RECEPTACLE ROTATABLE ABOUT A VERTICAL AXIS, STRUCTURE FOR SUPPORTING SAID RECEPTACLE DURING ROTATION COMPRISING A BASE, REMOTE FROM THE BOTTOM OF SAID RECEPTACLE, A RESILIENT MEMBER ON SAID BASE ENGAGED WITH AND MOUNTING THE LOWER END OF A RECEPTACLE SUSTAINING SHAFT, AND A CONE-LIKE DEVICE HAVING ITS RIM SUPPORTED ON A COOPERATIVE AREA OF SAID BASE WITH THE NECK PORTION THEREOF CONCENTRIC WITH AND SURROUNDING SAID SHAFT AT A POINT ABOVE SAID MEMBER AND A SECOND RESILIENT MEMBER ADJACENT SAID NECK PORTION AND SURROUNDING SAID SHAFT FOR SUPPORTING SAID RECEPTACLE, SAID SECOND MEMBER COOPERATING WITH SAID FIRST RESILIENT MEMBER TO PREVENT UNCONTROLLED VIBRATIONS AND PROVIDE STABLE OPERATION OF THE MACHINE.

Images