US1856168A - Washing machine - Google Patents

Description

E. J. PERRY WASHING MACHINE May 3, 1932.

Filed NOV. 18. 1927 3 Sheets-Sheet lll' mvp

: i IIIIMIH Q Q INVETOR. Z'mamehllerr'y ATTORNEYJ E. J. PERRY WASHING MACHINE May 3, 1932.

Filed Nov. 18, 1927 3 Sheets-Shea?I 2 INVENTOR. Emme] ferry ATTORNEYS May 3, 1932. EA J. PERRY -WASHING MACHINE Filed NOV. 18, 1927 3 Sheets-Sheet 3 INVENToR. Emanuel ZR/'rij BY www ATTORNEY/5' Patented May 3, 1932 UNiJED STATES PATENT OFFICE EMAN'UEL J'. PERRY, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR, :BY MESNE AS- tilGihlli/IENTS, T THE AIVIERCAN LAUNDRY MACHINERY COMPANY, OF N'ORW'OOD,

OHO, A CORPORATION OF OHIO WSHING MACHINE Application filed November 18, 1927. Serial No. 234,106.

ifhis .invention relates to laundry machines and .more particularly to machines of the socalled industrial or commercial type as distinpjuishec iro-1n the domestic type, although i it will be appreciated from the disclosure herein .made that the salient features oi my invention may be applied with advantage to the domestic type of machines if desired.

lily invention is primarily concerned with machines ot the type disclosed in my Patent No. 1,549,027 and in my copending applications tier. No. 50.076, tiled Aug. 13, 1925, and hier. No. 119.9-l4i. 'filed July l, 1926. These machines are of the self-dumping type wherein the washing' cylinder may be moved by power trom its normal position Within the casing; to a position outside ot the casing tor discharigins` the contents therefrom. For m cii't vting this movement oth the cylinder out of thc casing; and its return thereinto, these machinos malte use ot gear sectors pivotally mounted on the machine frame and having@lr journal bearings for the cylinder shafts. m. 'ihcse sectors are engaged by driving; gears which may be rendered effective or inetliective either by alterinlfr the transmission apparatus between such lnears and the prime niover or by direct control oit the prime mover itself. In n either case. it is apparent that the duration of the operating period ot the sector driving' roars must be accnrately controlled in order to avoid undesirable strains or injurv to the sectors and their associated mechanism. It ha been tound in practice that manual control oi this operatinnj period is unreliable and it has also developed that automatic mechanisms may b v reason of wear or unau thorn/.cd a djustment become unreliable, the fio rei-nit in .either case being breakage of parts which are erizscntial to the operation of the machine.

aiso armar-cnt that in this type of cylicr elevating mechanism. the :tull load is 'W .imp md or the motor or other prime mover inuncziiiatciif upon its being placed in operatimn or bi operatively connected with the iwcor i gears. This 'fact necessitates the usc ot' a larger and consequently more eX- perceive motor or other prime mover, 1n order to obtain the required high starting` torque, than would otherwise be necessar The imperfections outlined in the preceding,l paragraphs are a source ot' trouble, incon venience and expense in all sizes ot this type otmachine, but more particularly in the extremely large industrial machines wherein the weightand inertia of the moving` parts of the machine greatly magnify the danger due to such imperfections.

The general object oi my invention, theretore, is to provide a machine having all of the merits and advantages of my prior machinos, but without the impertections outlined above.

More specifically, it is an object ofmy invention to provide a self-dumping type of laundry machine wherein it will be impossible for the cylinder to exceed its normal limit of movement in either direction.

A further object of my invention relates to the provision of' means whereby the prime mover is permitted to build up a substantial torque before assuming the load incident to the cylinder elevating operation.

A. still` further object resides in the prvision oft a cylinder elevating mechanism wherein the load is gradually assumed by the prime mover.

It is aiso an object of my invention to provide a mechanism for opening the cover of the machine casing in combination with my improved cylinder elevating` mechanism.

Further objects relate to structural details and combinations thereof, all of which will be more specifically pointed out hereinafter.

In the drawings:

Fig. l is a rear elevation of my improved machine,

Fig. 2 is a view in end elevation showing cylinder in position within the casing,

Fig: 8 is a view similar to Fig. 2 but showinn1 the cylinder in dumping position, and,

Fig'. et is a view partly in vertical section illustrating a portion oi the driving' mechanism.

The general structure of my invention em* bodies a cylindrical casing l which may be supported by a plurality of base members f2. The casing` l is provided with a cover 3 which may be hinged as indicated at 4 to the rear side of the casing. The cylinder 1 and cover 3 are provided with complemental semi-circular openings which together afford an opening through which the cylinder shafts 7 are adapted to pass. The cylinder 8 is journaled in the ends of arms 9 which are pivotally mounted on the machine casing as indicated at 10. By means of this disposition of the cylinder it may be moved from its normal position within the casing to an upper and outer position, as illustrated in Fig. 3 of the drawings, wherein the contents of the cylinder may be readily discharged. By inspection of Fig. 1 it will be noted that the pivotally mounted arms 9 lie adjacent the outer side of the end walls of the cylinder and carry the extremities of the cylinder shafts 7.

In order to automatically move the casing cover 3 to open position in timed relation with the elevating of the cylinder I have provided a mechanism which comprises a cam member 16 secured to the gear 11 and adapted to coact with a cam follower 18 having a roller 17 for engagement with the'peripheral cam surface. The movable member 18 is slidably mounted in a guide member 21 secured to the end wall of the casing and is operatively connected to the cover by means of link 19 which is pivotally connected with the cover at 20. It will be observed that a major portion of the circumference of the cam member is concentric with the axis of shaft 12 and by virtue thereof the cover 3 is maintained in open position during a. substantial portion of the revolution of the gear 11. The cam is of such a contour as to rapidly open and close the cover.

My improved cylinder elevating' Kmechanism is best illustrated in Figs. 2 and 3 Wherein the cylinder together with its operating mechanism is shown in its two active positions. The end walls of the casing 1 are provided with shafts 12 on which gear elements 11 are journaled. It will be noted that the axes of shafts 12 are substantially directly beneath the axis of the cylinder, although sliglitly to one side of a vertical plane passing through the cylinder axis. The combined gear and crank disk 11 is provided with a crank pin 14 which coacts with an elongated slot formed in the corresponding end of the connecting link 13. The opposite end of link 13 is pivotally connected as at 15 to the arms 9 substantially midway of their length. By virtue of this construction it will be apparent that upon rotation of the gear 11 the lost motion afforded by the elongated slot will be gradually taken up and movement will be imparted from the crank pin 14 through link 13 to the arms 9 for moving such arms about their pivots 10 and thus raising the cylinder from itsposition within the casing to substantially the position shown in `of engagement with Fig. 3. rlhe function of the lost motion connection as described is to permit the prime mover to get under way and build up a substantial. operating torque before the load of the cylinder is imposed upon it. In this connection it will be noted that in the normal position of the parts illustrated in Fig. 2, the centers of the crank pins 14 and 15 and the center of the shaft 12 are in exact alinement with the center of shaft 12 between the two crank pins, while in the position of the parts illustrated in Fig. 3, the centers of the three elements are still in alinement but the crank pin 14 has moved to a position on the opposite side of shaft 12. rihis construction, that the gear 11 and the link 13 connected thereto by the pin 14 and the slot with the variations in leverage produced by these coacting elements as they assume different relative positions or angles during normal operation, affords a variable leverage drive between the prime mover and the cylinder elevating arms wiereby the load incident to the elevating operation is imposed upon the motor in a gradual manner.

' "Ihe mechanism for rotating the cylinder is quite simple and in the present construction embodies large gears 22 at opposite ends of the cylinder and secured to the shafts 7,

which gears are at times adapted to mesh with driving gears 23 which are rotatably and slidably mounted on a longitudinally disposed shaft 24. A second longitudinally disposed shaft 33 is journaled in the frame of the machine directly beneath the motor support and is permanently geared to the motor shaft through the gears 34 and 35 as clearly Vshown in Figs. 1 and 4. This shaft 33 is provided at each end with a wide faced pinion 32 which is positioned to engage the gears 23. It is noted that pinions 32 are of sufficient width to maintain driving engagement with the gears 23 even when the latter gears are shifted out of engagement with the cylinder gears 22. It is apparent, therefore, ii.

that there is a const-ant driving connection from the motor 37 to the gears 23 and that these gears may be shifted at will into or out the large gears 22 carried by the cylinder. T he shifting` movement of the gears 23 has a function in addition to 4that of disconnecting the cylinder drive,

which function will be hereinafter pointed out.

Journaled in the machine frame adjacent the lower portion thereof and on the rearward side is a longitudinally disposed shaft 26 which has secured at its opposite ends pinions 25 in permanent meshing engage- Sli ment with the cylinder elevating gears 11.

rIhis shaft 26 is connected to be driven from shaft 24 through a reduction gearing consisting of intermeshing beveled gears 30 and 31. shaft 29, and worm wheel and worm 27 and 28 respectively. The worin gearing is procasing whereby said washing member is mounted and movable to carry said member out of or into said casing according to the direction of said movement, means for moving said arms including a rotatable member on said casing, a crank connected to said rotatable member and a link connecting said crank and one of said arms, and means for raising and lowering said cover including a cam carried by said rotatable member, a cam follower, and connections between said cam follower and said cover.

5. In a laundry machine, the combination with a casing, of arms pivotally mounted on said casing, a. washing cylinder journaled on said arms and movable therewith in an arcuate path into and out of said casing, a prime mover, mechanical connections between said prime mover and one of said arms foroperating the lat-ter and including as an operative part of said connections means for positively limiting the movement of'said arms in both directions.

6. In a laundry machine, the combination with a casing, of arms pivotally mounted on said casing, a washing cylinderjournaled on said arms and movable therewith in an arcuate path into and out of said casing, a prime mover, mechanical connections between said prime mover and one of said arms for operating the latter, said connections including a crank pin moved by the prime mover through a complete circle for positively limiting the movement of said arms in both directions when reaching its opposite dead centers and a link having a lost motion connection with said crank pin to enable said prime mover to develop a starting torque before assuming the load.

7. In a laundry machine, the combination with a casing, of arms pivotally mounted on said casing, a washing cylinder journaled on said arms and movable therewith in an arcuate path into and out of said cylinder, and

means for moving said arms including a crank disk journaled on said casing having a crank pin thereon, a crank pin on one of said arms, a link connecting said crank pins and a lost motion connection between said link and one of said crank pins.

8. In a laundry machine, the combination with a casing of arms pivotally mounted on said casing, a washing cylinder journaled on said arms and movable therewith in an arcuate path into and out of said casing, and

ing cylinder rotatably and removably disposed therein, a gear carried by said cylinder, a pair of shafts j ournaled in said frame, means connecting said cylinder and one of said shafts for moving said cylinder into and out of said casing, a gear journaled on the other said shaft and adapted to drive said cylinder gear, reduction gearing connecting the two said shafts, a prime mover operatively connected to said journaled gear, said journaled gear being supported for shifting movement into and out of operative connection with said cylinder gear, and means operative upon movement of said journaled gear out of operative relation with said cylinder gear for coupling said journaled gear and last mentioned shaft whereby to establish power transmitting connection between said prime mover and said first mentioned shaft.

10. In a laundry machine of thetype em` bodying a frame structure having a supporting base for a cylindrical casing and a motor support disposed at the rear of and adjacent the top of the machine and having a cylindrical casing on said supporting base, a cylinder rotatable and removably disposed within said casing, and means for operating said cylinder comprising a motor on said support, a shaft disposed longitudinally of the machine and journaled in said frame, gearing connecting said motor and said shaft, a wide faced pinion secured to said shaft, a second shaft journaled in said frame parallel to said shaft, a gear rotatably and slidably disposed on said second shaft and in meshing engagement with said wide faced pinion, means connected to said cylinder operable by said gear when in one position for rotating said cylinder, a third shaft journaled in said frame parallel to the other said shafts, means operated by said third shaft for moving said cylinder into and out of said casing, a counter shaft and reduction gear connecting said second and third shafts and means operative upon shifting of said rotatably and slidably mounted gear out of operating relation with the means connected to said cylinder for coupling said gear to said second shaft whereby to complete the driving connection between said motor and said third shaft.

11.v In a laundry machine, the combination with a casing havinga washing cylinder rotatably and removably disposed therein, of a gear journaled on an end of said casing, connections between said gear and cylinder for moving the latter into and out of said casing, a hinged cover for said casing, and means for opening and closing said cover during certain movements of the cylinder including a cam secured to said gear, a guide secured to said casing end adjacent said cam, a cam follower disposed in said guide and cooperating with said cam and a link connecting said cam follower with said cover.

12. In a laundry machine, the combination with a casing having a Washing cylinder 1'0- 'taiably and removably disposed therein, arms pivotally mounted on said casing and having said cylinder j ournaled thereon, a hinged cover for said casing, and means for simulianeously operating said arms and cover including a gear jonrnaled on an end of said Casing, a crank pin carried by said gear, a crank pin carried on one of said arms, a link connecting said crank pins, a cam driven by sai d gear, a guide secured to said casing end adjacent said cani, a cam follower disposed in said guide and coacting with said Cam and a link connecting said cover and cam Jfollower.

ln testimony whereof I affix my signature.

EMANUEL J. PERRY.

Images