US1572002A - Wringer mechanism - Google Patents

Description

Feb. 9 1926.

A. J. DREMEL WRINGER MECHANISM l original F-i1ed Feb. 11, 1918 s sheets-sheet 1 l' Mmmm 123 A. J. DREMEL WRI'NGER MECHANISM Feb. 9 192e. 1,572,002

Original Filed Feb. 1l, 1918 5 Sheets-Sheet 2 .raf/26 132 29 f2.6'

Feb. r9 1926. 1,572,002

lA'. J. DREMEL -.WRINGER MECHANISM origina F11ed Feb. 11, 1918 5 sheets-sheet s metg; v

` -J I qef Jreme,

Patented Feb. 9, 1926.

UNITED STATES PATENT OFFICE. ALBERT J'. DREMEL, OF RACINE, '\I SCONSIN, ASSIGNOR T0 THE MAYTAG COMPANY,

OF NEWTON, IOWA, A CORPORATION OF IOWA.

WRINGER MECHANISM.

original application' med February 11, 1918; sai-iai No. 216,436. Divided and this applicatio'n riad January 12, 1920.

To all u2/1,0m t may concer/r1:

Be it known that I, ALBERT J. DREMEL, a

citizvenlor' the United States, residing at Racine, in the county of Racine and State otlVisconsin, have invented certain new and useful Improvements in Wringer Mechanism, of which the followingn is a specltication. This invention relates to wringers and associated mechanisms for the operation of the samefthis application being a division of my pending application, Serial N o. 216,- 436, filed Feb. 11, 1918.

Among the objects of my invention are to provide a wringer having an instantly releasable catch by which the clothes can be quickly released in case any article becomes entwined around the rollers or clogged therebetween; further, to provide a wringer which, by a simple movement, can be tilted to accommodate wringing in either direction, which tilting movement will automatically carry the drain board into proper position; further, to provide an adjustment to permit the wringer to be horizontally swung into any one of a plurality of adjusted positions; further, to eliminate all wood in construction; further, to reduce to arminimum the number of controlling levers; and such further objects, advantages and capabilities as will later appear.

j My invention further resides in the combination, construction, and arrangement of parts illustrated in the accompanying drawings, and while I have shown therein a preferred embodiment, I desire it to be understood that the same is susceptible of modiiication and change without departing fromV the spirit of my invention.

In the drawings:

Fig. 1 is an end elevation of awringer constructed according to my improved invention. l

Fig. 2 is a front elevation at right angles to that shown in Fig. l.

Fig. 3 is a top plan view of the same structure.

Fig. 4 is a fragmentary vertical section through the wringer gearing `and mechanism for operating the` cylinder.

Fig. 5 is a vertical section'through the Serial No. 350,856.

`Lringer gearing taken on the line 5-7-5 of 1g. 3. Fig. 6 is a horizontal section through the wringer operating clutch mechanism taken Fig. 8 is a side elevation of the wringer gearing cover.

Fig. 9 is a vertical section taken on the line 9 9 of Fig. 5, and looking in thev direction of the arrows.

Fig. 10 is a view similar to Fig. 9 but showing the top guard plate swung just prior to raising the top roller, and in position to unlock the same.

Fig. 11 is a view similar to Fig. l0, but showing the top roller in elevated position.

Referring in detail to the drawings, my improved washing machine comprises the upright frame or stand 1, having the legs 2, and carrying the tank 4. Upon the upper corner of the tank frame is the bracket 3 upon which is mounted the wringer. .Suitably bolted to the bracket 3 is a second bracket 74 comprising vthe upper arm 75 and the lower arm 76, each of which arms is provided with suitable bearings vfor the sleeves 77 and 78 respectively, and in which sleeves Vis journaled the vertical shaft 79, loosely mounted upon, which are the bevelled gears 80 and 81, which in turn mesh with the bevelled gear 82 fixed upon the shaft 83,

whicho-shaft carries the lower roller 84 of the wringer. The roller 84 is rotatably geared with the upper roll 85 through the medium of the gears 86 and 87 Rotatably mounted upon thesleeves 77 and 78 and between the arms 75 and 76 is the gear housing 88, which as -seen in Fig. 6 is provided with the flat front'face 89, which is recessed at 90, and to which face its the cover plate 91, which has integrally formed therewith the outwardly extending sleeve 92, upon which is journaled thebearing 93 of the main portion of the wringer frame whereby the wringer is rotatably mounted upon the sleeve 92, as best shown in 5.

The means for reversing the direction of rotation of the wringer rolls comprise the sleeve 94 (see Fig. 6), which is keyed to the shaft 79 and the exterior surface of which is substantially square in cross section. Slidably mounted upon this sleeve 94 is the clutch 95, which is provided with the circumferential groove 96, within which fits the plate 97, whlch is provided with the opening 98, within which opening is adapted to tit pin 99, which is eccentrically carried by the disc 100. This disc is lixed upon the end of the shaft 101 to rotate therewith when this shaft is rotated by a suitable manipulation of the handle 102 mounted upon the sleeve 103. From this construction, it will be seen that'by throwing the handle 102 to one side or the other, the shaft 101 will be correspondingly rotated, which in turn rotates the disc 100, causing the plate 97 to be elevated or lowered, thus elevating or lowering the sliding clutch 95,

the ends of which are suitably formed t0 engage corresponding clutch surfaces in the gears 80 and 81. These gears being located on diametrically o posite sides of the gear 82 will, as is obvious, cause the same to rotate in one direction or the other, in accordance with which of the gears 80 or 8l is being driven by the clutch 95.

In order to lock the clutch in elevated or lowered position, I have provided the disc with a pluralit of openings 104, within any one of whic may engage the tapered end of the pin 106, which pin is resiliently held in engagement in said openings by the coil spring 107 mounted in the opening 108 and held between the end of the pin 106 and the inner surface of the plug 109. This, as will be apparent, is suiiicient to hold these parts against any ordinary pressure or jar and yet will permit these parts to be moved upon suilicient pressure being exerted u on the handle 102. It will be noted that t e shaft 101 is fixed to the sleeve 103 by meansfof the pin 110.

The lower arm 76 ofthe bracket 74 is extended downwardly to form the leg l111, which leg is suitably bored and in which is journaled the lower end of the shaft 79. This leg 111 is provided at its end with the flange 112, to which flange is suitably bolted the integral gear housing 113, which housing is provided aty its opposite sides with the bearings 114 and 115, within which is journaled the shaft 116. lUpon the shaft 116 is xed the bevelled gear 117, which in turn meshes with the bevelled gear 118 i'ixed upon the lower end of the shaft 79. The shaft 116 projects a substantial distance beyond the end of the bearing and has fixed thereupon the sprocket wheel 119, which sprocket wheel is in alinement with a sprocket wheel on a shaft 44, and over which two sprocket wheels runs the sprocket chain 120, by means of which rotation is transmitted from the drive shaft 44 to the Yend the handle 131.

shaft 116, and in'turn tothe wringer rolls 84 and 85. Suitably placed over the sprocket wheel 119 and boltedtc the flange 112 by bolts 121 and to the integral housing 113 .by bolts 122v is the housing 123, which is locked in any one of a plurality lof horizontal positions, the'lowerf-arm 76 of the bracket 74 is provided with a flange 125, which flange is in turn provided around its circumference with a plurality of notches 126. Extending downwardly from the cover plate 91 of the gear housing and, as best seen in Figs. 5 and 8', is the projection 127, which projection is provided with the opening 128 in line with which is the cylindrical bore 129.y

Slidably mounted within the opening 128 is the stem 130, which carries upon its outer y Encircling this stem and located within the'cylindrical bore 129 is the coil spring 132, which spring is suitably com ressed between the closed end of the cylin rical bore and .the collar 133 secured upon the stem 130, constantly impelling this stem inwardly, whereby its tapered end 134 may be brought into engagement with any one of the notches 126 desired, thus locking the wringenin any one of a plurality of horizontal positions, whereby the same may be madeto wring clothes either directly from the tank, or from a separate rinsing tub, into a separate basket, or in any other position in which it is desired to operate the same.y As will be obvious, the stem 130 can be pulled outwardly by pressure exerted upon the handle 131, whereby to release the end 134 from the notches 126 pre aratory to' rotating the wringer into a di erent position.

As stated above, the wringer is mounted for vertical rotation upon the sleeve 92,

whereby the wringer frame and the' drain board 135, which is secured thereto at the bottom, may be quickly and suitable tilted towards either side, whereby to accommodate wringing in either direction.l In order to lock the wringer in the desired one of these tilted positions, I have provided a suitable locking means which I will now describe. As shown in Fig.a8, the projection 127 of the cover plate 91 is provided with the apertures 136 and 137, and the downwardly extending le@r 138 `of the wringer frame is also provided with an aperture which can be either one of the apertures 136 or 137 upon suitable rotation of the wringer upon the rought into registry with pressure upon the rod 152, which rod is plosleeve 92. Extendin through' the aperture in the leg 138 is t e rod 139, which as shown in Fig. 2, extends at its outer end through the apertured projection 140. This rod is formed at its free end with a suitable handle 141 and at a point removed from the end with the collar 142. A coil spring 143 encirclesl the rod 139, and is compressed between the projection 140 and the collar 142, whereby to impel the rod 139 in a direction towards the left in Fig. 2. It will thus be seen that when'the aperture in the leg 138 is brought into re istry with either of the apertures 136 and 13 that the rod 139 under the action of the spring 143 will enter these apertures, and thus lock the wringer in the desired tilted position. The drain board 135 being secured to the wringer will at the4 same time that the wringer is tilted, be automatically thrown into proper position to accommodate wringing 1n the direction for which the wringer is tilted. These two positions of the wringer are indicated in Fig. 9, it being shown in full lines as tilted to one side, and in dotted lines as tilted to the op-v posite side.

The wringer comprises the end bearing 93, which, as explained above, is rotatably mounted upon the sleeve 92, and at its opposite end is provided with the bearing 143,

-between which bearings are secured, or if desired, formed integrally therewith, the

the drain board 135. The lower roll 84 is journaled at'one end in the sleeve 92'and at its opposite end in the bearing 143, and, as explained above, is in driving engagement with the upper roll 85 through the medium of the gears 86 and 87. Formed integrally with the lower bearing 93 is the upwardly' extending arm 144, to which is pivotally connected at 145 the upper bearmg 146, which at its forward end is provided with the opening147, (see Fig. 3), there being one of these upper bearings for each end of f the wringer. Rotatably connected with the upper bearings 146 by means of pins 148 passing through the openings 147 is the upper roll guard plate 149. Extending up- Wardly from 'the lower bearing 93 and on the side opposite from the arm 144 is the arm 150, which at its upper end is provided with the outwardly extending flange 151, through which flange slidably extends the rod 152, provided at its upper end with the hook 153, which hook is adapted to take over the pin 148. Encircling the rod 152 and confined between the flange` 151 and a nut 154 adjustable on the lower threaded end of rod 152 is the coil spring 155, the function of which is to exert a continuous downward vided near its upper end with the projection 156 for engagement with the upper side of the flange '151, whereby to limit this downward movement. By adjusting the nut 154 on the rod- 152 the tension of the spring may lar arrangement of bolt and hook at -each end of the wringer,as shown in Fig. 2. The pin 148, as best shown in Fig. 9, is slotted at 157, the function of which slot is to cause the remaining ortion of the pin to act as a cam surface, w ereby, as will be understood from an inspection of Fig. 9, a half rotation of pin 148 will release the hook 153 and allow the rod 152 to move downwardly under action of spring 155. This half rotation of pin 148 is effected by grasping the handle 158 of plate 149 and swinging the same through substantially one hundred and eighty degrees towards thel front, thus in turn rotatmg pin 148 to release hooks 153, as explained above. Fig. 9 shows the plate 149 before being rotated. Fig. 10 shows this plate after being rotated approximately one hundred and eighty degrees to the front, and

clearly illustrates the manner 1n which the hook 153 is released. Immediately upon this release of the hook, the upper bearings 146 may be swung upwardly carrying therewith the upper rolls 85, thus providing a structure which can be quickly manipulated in order to release any hunched or entangled clothes between the rolls when such is necessary. As is apparent, the upper bearings may be quickly and easily locked in operative position 'by a reverse operation ot the parts just described. In order to hold the guard plate 142 in proper spaced relation from the upper roll, there is provided on this plate a lug 159, which comes in contact with a suitable bearing surface on the upper bearing in order to hold this plate in the desired position.

Having now described my invention, l claim:

1. In a device ofthe class described, a vertical power shaft, a wringer in operative relation to the power shaft, the wringer being so mounted as to enable it to be swungin a substantially horizontal plane from one position to another about the shaft as an axis and also so mounted as to swing to different positions about a horizontal axis.

2. In a device of the class described, a vertical power shaft, a wringer in operative rclation to the power shaft, a drain board carried by said wringer, the wringer being somounted so as to enable it to be swung in a substantially horizontal plane from one position to another about the shaft as an axis and also so mounted as to tilt about a horizontal axis in said swung positions, whereby to shift said drain board to accommodate wringing in either direction.

3. In a machine'of the class described, a support, a shaft on the support, a wringer, rolls mounted on the wringer, means for driving the wringer rolls from the shaft and for mounting the wringer to permit" it to move about the shaft as an axis in aplu-v rality of planes disposed angularly to each other.

4; In combination, a support, a power shaftthereon, a wringer including rolls, means for mounting said wringer on said support to permit movement of the wringer about a vertical axis and means to permit movement of the wringer about an axis perpendicularito said vertical axis, said means including a driving connection from said power shaft to said wringer rolls.

5. In a washing machine, a support, a vertical power shaft, opposed bevel gears loosely mounted thereon, an interposed clutch for selectively driving said gears, a bevel gear meshing with said opposed bevel gears, a horizontal shaft rigid with said single bevel gear, a wringer frame pivotally mounted on said horizontal shaft, wringer rolls on said wringer and a driving connection between said horizontal shaft and said rolls.

6. A wringer comprising a pair of rolls, bearings for said rolls, the upper bearing being pivotally interconnected with the lower bearing, means for maintaining said rolls in cooperative engagement, resilient means adapted to be tensioned by the con tacting engagement of said rolls, and a single means for instantaneously releasing Said rolls for permitting said upper bearing to be swung away from the lower bearing to Separate the rolls, said means being operable to permit the operative re-engagement of said rolls without altering the adjustment of said resilient means.

7. A wringer comprising a. pair of rolls, bearings for said rolls, the upper bearings being pivotally connected with the lower bearlngs, and means for instantaneously swinging the upper bearings away from the lower bearings, whereby to separate the rolls for the removal of hunched or entangled clothes, said means comprising a swinging plate pivoted to the upper bearings, means for locking said bearings and rolls in operative position, said last mentioned -means coinprising a pin and hoolr and resilient means adapted to be tensioned by the operative engagement of said pin and hook.

8. A wringer comprising a pair of rolls, supports for said rolls, the upper supports being pivoted to the lower supports, a pin carried by one of said supports, a hook-like member carried by the other support and adapted to engage the pin on the other support, and resilient means adapted to be tensioned by the operative engagement of said member with said pin.

9. A wringer comprising a pair of rolls, bearings for said rolls, the upper bearings being pivoted to the lower bearings, a pin in the upper bearings, and a hook resliently mounted on the lower bearings and adapted to engage over said pin, whereby to resilient- 1y hold said rolls together in operative position, and a swinging plate carried by said pin, said pin being so formed that upon rotation of said plate, said hook and pin will become disengaged to permit the upper bearings and roll to be swung away from the lower.

10. A wringer mechanism comprising a first support, a roll thereon, a second support, a roll thereon, means for mounting said supports to permit them to pivot relatively for effecting a relative shifting movement between said rolls from a spaced apart relation to an operative engagement, resilient means adapted to be tensioned when said rolls are operatively engaged, means for adjusting the tension of said resilient means, cooperative latching means carried by the first and second supports, and a single manually shiftable means carried by a conspicuous portion of one of said supports and operatively connected to the latching means carried by one of said supports for positively shiftina said supports relatively and for bringing the rolls thereof into operative engagement against the tension of said resilient means without altering the adjustment of said resilient means. y

1l. A wringer mechanism comprising a support, a roll thereon, a second support, a roll carried thereby, means for shiftably mounting said supports to permit said supports and the rolls thereof to be moved relatively wide apart or to be moved together with the rolls in operative engagement, a quick release comprising a manually shiftable means carried by one of said supports and including a member adapted to be shifted entirely free of the other support to permit the rolls to be moved relatively wide apart and adapted to be moved into engagement with said other support to force the supports together and positively engage the rolls, and resilient means adapted to be tensioned when said rolls are positively engaged by the engaging movement of said manually shi ftable member.

l2. A wringer comprising lower bearings, a drain board extending between said bearings, a support for said wringer, a sleeve on said support, a lower roll journaled in s ald sleeve, one of said lower bearings belng rotatably mounted on said sleeve, whereby said wringer and drain board may be rotated on said sleeve to tilt the same for accommodating wringinof in either direc tion, and an upper roll adapted to cooperate with said lower roll.

13. ln a machine of the class described, a support, a power driven shaft thereon, a wringer including rolls, means for mounting said wringer on said support to permit said wringer to be shifted so as to be disposed in various vertical planes and to permit said wringer to be shifted into planes lyin at an angle to the vertical, and means for riving said wringer rolls -from said power driven shaft in shifted positions of the wringer.

14. A wringer-including a pair of rolls, a vertical shaft, a support for said wringer having a horizontal sleeve u on which said wringer is journaled to permit tilting of the wringer and having a mounting' to permit said support to swing about said vertical shaft, a roll shaft journaled in said sleeve, a gear on said roll shaft, and means on Said vertical shaft for engagement with said gear on said horizontal shaft to operate said roll shaft in either direction.

15. In combination, a support having a vertical shaft provided with opposed bevel gears, a second support mounted to swing in a horizontal plane about said vertical shaft, said second support having a horizontal sleeve, a wringer including a pair of rolls, a roll shaft journaled in said sleeve whereby said wringer may be pivoted in a vertical plane about said shaft without interfering with the rotation of the roll, a bevel gear on said roll shaft meshing with said opposed bevel gears on said vertical shaft,

16. A bracket comprising upper and lower arms, a ,vertical shaft rotatably mounted in said arms, gearing on said shaft,

a housing for said gearing, said housing be` ing rotatably mounted on said shaft between said arms, and having a horizontal sleeve thereon, a wringer rotatably mounted on said sleeve, whereby said wringer may be tilted, a roll shaft journaled in said sleeve adapted to be operated by said gearing, said housing and wringer being together horizontally rotatable about said vertical shaft, and means for locking said wringer and housing in any one ofa plurality of horizontally swung positions, and means for lockin said wringer in tilted position.

. of a power transmission, a wringer support mounted on said bracket to rotate about a vertical axis, a wringer mounted on said support to rotate -about a horizontal axis, said support including a driving connection from said driving element to said wringer.

1'8. A bracket including a driving element of a power transmission, a wringer support ane, a drain board on said wringer, shaft-l mg in said housing and wringer for operatbracket including a driving element ing the rolls of said wringer, means for drivin said rolls in either direction, means for loc ing said housing and wringer in any one of a plurality of horizontal positions, and means for locking said 'wringer' and drain board in any one of a plurality of tilted positions. l

20. A wringer mechanismvcomprising a support, a roll thereon, a second support, a roll thereon, means for shiftably mounting said supports to permit said rolls to be moved relatively wide apart or to be moved into a position of operative engagement, a single quick release for said rolls comprisingv relatively movable means on Said supports having completely separable portions adapted to be engaged to force said rolls to- 'gether and adapted to be instantaneously and .completely disengaged to permit the free and relatively wide separation of said rolls, and resilient means adapted to be tensioned when said rolls are forced into operative engagement by said cooperative portions.

21. A wringer mechanism comprising stationary support, a roll thereon, ashlftable top support, a roll thereon, means for permanently pivoting said second support to said first Support to permit said supports to be moved apart or together and to correspondingly shift said rolls from a spaced apartn relation to an operative engagement, resilient means adapted to be tensioned when said rolls are operatively engaged, latching means on the stationary support, latching means on said second support, said latching means being entirely spaced apart when said respective supports are moved apart whereby to permit a relatively wide separation of said rolls, and a manually shiftable member mounted on a conspicuous portion of said top support and connected to the latching means on said top support for positively drawing said supports together against the tension of said resilient means.

22. A clothes wringer comprising an u per and a lower roll, means for pivotal y mounting said rolls whereby they may be brought into operating contact or swun apart, a plate pivoted at the 'ends of sai wringer, latching mechanism for hol said rolls together, said plate having a han grasping portion and being shaped to operate said latching mechanism to permit the instant separation of said rolls.

23. In a power driven wringer, a vertical shaft, means for permittin the movement of the wringer about the s aft as an axis and means for permittin the movement of the wringer about an axls perpendicular to the shaft.

24. In a wringer, a stationary frame having a roll thereon and a pair of sl'idable locking bolts having hooks, a. frame plvoted to said frame and carrying a roll, a shiftable top plate having spaced pivots in said shiftable frame adapted to engage or release the hooks of said locking bolts on movement of said plate.

25. In a power driven wringer, a vertical shaft, a frame rotatably mounted for movement about the shaft as an axis, wringer mechanism in said frame, and means for mounting said frame for tilting movement about a horizontal axis extending lengthwise of said frame.

26. In a power driven wringer, a vertical shaft, a roller carrying frame rotatably mounted for movement about the shaft as an axis, said frame being also rotatably mounted for movement about an axis extending perpendicularly to the shaft and longitu inally of the frame to permit lateral tilting of the frame, and means for securing said frame in various of the positions to which it may be moved.

27. In a wringer, a frame, a roll thereon, a second roll adapted to be superimposed in operative engagement with said first roll, means including a guard plate normally positioned over said top roll and pivotally connected to said frame, said guard plate being shiftable relatively to said frame whereby to expose said top roll and mechanism for latching said plate to the frame, said mechanism including a single means forinstantaneously releasing said latching mechanism.

28. A wringer comprising a iirst support, a

wringer roll carried thereby, a second support, a wringer roll thereon, said second support being pivotally connected to said first support to permit said pivoted support to be swung and shift the roll carried thereby to a position spaced from the roll of said first support or to permit said rolls to be brought together into operative engagement, a single shiftable instantaneously releasable means carried by said second support adapted to engage cooperative means on said iirst support to maintain said supports 1n closed position with the rolls in contact and tension-means mounted solely on said first supportand compressed by the closing of said supports and tending normally to pr'event the separation of said rolls when 1n contacting position.

29. A wrin er comprising a irst support, a roll carrie thereby, a second support, a roll carried thereby, means for pivotally interconnecting said supports to permit them to move relatively whereby to shift the rolls from a relatively wide spaced apart relation to an -o erative engagement, resilient means adapte to be tensioned when said rolls are brought into contact, latching means having a substantially hook-shaped portion carried by one of said supports, a cooperative latching means on the other support and adapted to be engaged by the substantially` hookshaped portion when said supports are brought together and to be entirely free of said cooperative latching member when said supports are separated, and a single manually operable member adapted to shift said substantially hook-shaped portion relatively to its support when in engagement with its cooperative member to positively force said rolls into operative engagement against the tension of said resilient means.

30. In a washing machine, a support, a wringer, rolls for said wringer, a `power shaft on said support, means for driving said rolls from said power shaft, and means for mounting said wringer on said support to permit it to swing to various positions and *to move while maintained in a swung posiion.

31. A wringer comprising a iirst support, a roll thereon, a second support, a roll thereon, means for pivotally interconnecting said supports to permit one to swing upon the other so as to permit one of said rolls to swing entirely free of the other roll and its support or to permit said rolls to be operatively engaged, a single shitable instantaneously releasable means carried bv one of said supports adapted either to maintain said rolls` `peratively engaged or to permit the quick .elease of said rolls and the substantial swinging movement of one of said rolls away from the other roll to expose said roll, and resilient means adapted to be tensioned when said rolls are brought into contact, said quick releasable means being constructed and arranged to permit its resetting and the operative engagement of said rolls without changing the adjustment of the resilient means.

82. A wringer comprising a lower support, a roll thereoman upper support, a roll thereon, means forfpivotally mounting said upper support on said lower support to permit said upper support to swing on said lower support and arcuately to swing said upper roll into operative engagement with said lower roll or out of engagement with said lower roll to remotely separate said rolls, resilient means adapted to be tensioned when said rolls are brought into engagement, and a single instantaneously releasable means carried by a conspicuous portion of one of said supports and adapted to maintain said rolls in operative engagement, said resilient means andv said releasable means being constructed and arranged on said supports to permit the operative reengagement of said rolls without changin the adjustment of said resilient means an the arcuate movement of one of said rolls away from the other to a substantially removed position.

33. In a wringer, a stationary frame, a roll thereon, a second roll adapted to be superimposed in operative engagement with said rst roll, means including a top plate normally positioned over said top roll and pivotally connected to said frame, said top plate being shiftable relatively to said frame whereby to expose said top roll, and mechanism for latching said top plate to the frame, said mechanism including a single quick releasing means for instantaneously releasing said latching mechanism and resilient means adapted to be tensioned by the latchl f" ing of said plate to said frame.

In Witness whereof, I hereunto subscribe my name to this specification.

ALBERT J.' DREMEL.

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