US1735745A - Safety attachment for extractors - Google Patents

Description

Nv. 12, 1929. J, GARIGUO 1,735,745

SFETY ATTACHMENT FOR EXTRACTORS Filed Nov. 29', 1927 2 sheets-shea: 1

I I' al l ATTORNEY l Nov. 12, 1929. l y .1. GARlGLlo 1,735,745

SAFETY ATTACHMENT FOR EXTRACTORS" Filed Noy.29, 1927 2 Sheets-Sheet 2 A ATTORNEY lNVENTOR WWNESSES f ,El Jose/:7L (r/"glio 45" Fig'flis'a'fragmentary'sectionalview takeny Patented Nev. l2, i929 .Ir'osfnPH` sanremo, or'`V NEW YORK, n. Y. Y 'Y resigns SAFETY ATTACHMENT non nXTnAcTons :"'A'ppli'cation med November 29, 192'?. seriai N. 236,522.A

Thisinvention relates` to laundryinachinery and has particular reference to a safetyv y attachment for'use in connection with extractors for drying'clothes b-yfcentrifugal action.

5 Thepresent invention 'broadly compre- -hends an improved means forpositively preven'ting the' opening ofthe Aextractor coverv 'until the machine has reached a dead stopi or rthefstarting of the machine until the-'cover is *101' completely closedV so as to safeguardthe operators or employees against injury. y v The invention furthermore vaims to provide "a safe attachment' of this character which is so constructed as toallow for manual turning Y n Arreference, lA* designates the' body of the eX#L 65 15 of the basket or inner rotarymember of the ektractorgwhile the machine is out of opera- .tion with kthe cover openso that the operators may properlyl fill the basketor remove the contents therefrom.'y y 20 The jinventionfurthermore provides ,an improved. safetyatt'achment of the'charact'er set forth which is simple in its construction and' mode of operation', which` is economical Sto produce and install, and which is highly Y, 25eiiicie'nt` and'thorhoughly. reliable' vin its purpose. Y ,V With the,` above recited and other objects in view, reference is had tof the following description and accompanying.'v drawings in 30 which there isexhibi'ted one example or embodiment of the invention, Vwhile the aprrp'ended claims denne the actual scope' of the invention. 'fw In the drawings;

f 35" Figui-er1 isa top plan view `of an extractor with the safety attachmentapplied and illus- "'trating thel machine in operation withv the ,A j cover-locked bythe attachment in closed Y A Y an openupper end has a cover Q which is connected .to fthe body by; ahinge havingig 90 i hinge knuckles R attachedfto the, cover and ,hinge knuckles 'S attached tolthe extractor condition; K- f u Fig.Zisafrontviewthereof;

I Fig. A3 is a fragmentary plan view with parts in section illustrating the extractor [driving means in locke'dcondition vwhenthe vcover'isopened; I

' approXirnatelyon the lin'e 1 -4 of Fig. 1 and illustrating respectively in full and dotted lines, the unlocked andy locked conditions of the driving means;y Figt is an enlarged fragmentary sectional tion bytheopening of the cover;

VofFig; A c

',Fig. 81is' a fragmentary sectional view taken approximatelyon the lineB-S of "view taken approximatelyon the line v5 5 of Fig. l, illustrating the position of parts when the machine is vin operation with the cover lockedagainst opening; iv

Fig. 6 isa similar view illustrating the machine at rest with the parts' inthe shifted posi- Fig `7 is a vertical fragmentary sectional view takenl approximatelyfon thelinel 7-.7

-ld`ig.5. p

lReferring to the drawings-by characters of.

tractor which isofanyof the, usuall types and having therein a basketpor freceptaclefor the clothes,` :which :basket or receptacle, is

driven by a suitable mechanism, such vasabelt and pulley, from a drive pulleyfBaon a; coun-3; 70 tershaft C supported in bearings D- D which are carried by brackets E- E.f The shaftj C has secured thereto a livepulleyli" and a dead or idle pulley G, the` former being' keyedto the shaft and the latteralooselymounted on 75 the shaft. A belt Htrained around angover- Y head driving pulley isadapted to be respectively shifted from the live pulley to the dead n pulley,or viceversa, by a shift rod` I having 'a loop J through which one lead ofthe belt;` so H is trained. y The s'hift'rodis connected with a bell crank K ful'crumed at L and provided with an operating'handle'M. The shift rod Y isl guidedby'a bracket armNcto which it; is

slidably connected by a bolt or other iequiva- S5 lent device O operating in a slotP in the bracket armN. f

The extractor body which is provided4 with body. The hinge knunckles Rare' 4secured to' i a hinge shaft T while'the shaft is 4free to turn in the body Vhinge knuckles S. 9.5v

The safety attachment vcomprises a ylocking boltflO which is connected with the' hinge shaftrT in such a manner that when the cover bracket arm N is retracted and when the cover is opened with the machine at rest, theV free end 11 is projected into a keeper opening 13 in the shift rod I, it being Vunderstood that 'the shift rod at this time is disposed in a shifted position which brings the keeper opening 13 into alinement with the opening 12. The connection between the vhinge shaft T and thelock bolt 10-preferably embodies an eccentric pivotal connection 14 with a circular disk or flange 15 secured to the hinge shaft T. It is'obvious that while the cover Q, is blocked against opening bythe bolt 10, being prevented from rearward movement due to its engagement with the shift rod I while the same is shifted to a position to hold the belt H on'the live pulley F,

Y there is nothing to prevent the opening of the cover while theV machine is .still .turning by momentum after theshifting of the beltI-I Von tothe dead pulley Gr. In order,f.there .'fore, Vto further safeguard the operator or employee from injurydue to opening of the cover until the machine has come to `a complete rest or dead stop, the opposite end of the lhinge shaft T has keyed or otherwise attached thereto a locking-member 16 having a tooth or pawl17 projectingradiallytherefrom. The tooth or pawl is disposed between the furcations 18 of the bifurcated Vor forked member 19, which bifurcated or forked member has pivotedA between spaced bearing brackets 20, a lock lever 21 having a shoulder '22. The lock lever 21 is ,normally swung to a position to hold the shoulder 22 in engagement with the pawl or tooth 17 by a spring 23 and is positively prevented frombeing swung to a released position by a locking rod 24 which is connected with the lever 21 and witha foot 25 which is fulcrumed at 26 in bearings 27. on a bifur- Vcated vmember 28. The bifurcated member 28 has furcations 29 provided with alined openings 30 through which the countershaft C extends. A. wheel 31 is keyed to the shaft C for limited independent turning movement pointed teeth by a key or keys 32 which are secured to the notches 38. v

When the shaft C is'turning it is obvious that the teeth 37 willprevent the lock lever 21 from being moved to a released position Whichdisposes the shoulder 22 out of the path of movement of the pawl or tooth 17 of the locking member 16. It is further obvious that when the shaft C comes to rest, the lever 21 may then be swung to a release position against the action of the spring 23 due to the fact that one of the notches 38 defined between the teeth 37 will allow for the swinging movement of the foot. If the apex or point of one of the teeth 37 should be disposed in a. position to obstruct the movement of the foot 25, the keyed connection`32 and 33 will permit of a limited movement of the wheel with respect to the shaft C so as to dispose the next adjacent notch in a position to allow for movement of the foot 25.

In order to ermit of the manual turning movement of't e basket or receptacle in the extractor'body A when,V the cover is opened, it will be observed that the lock lever'21 is provided with an arcuate depression 40 which allows for the swinging ofthe leverand the consequent movement of the foot 25 to an 'outof-the-way position with'respect to the stan. 'wheel 31. It is apparent that with thecover opened and the bolt 10 in a/locked position with respect to the shift rod I as illustrated in Fig. 3, it is impossible to shift the belt I-I from the dead pulley G to the live pulley F, and

itis therefore apparent that asafety attach- -ment for machines of this character has been devised which is fool-proof and practically automatic in its operation. Y

What is claimed is: 1. The combination with an extractor including a body having an inner rotary inember and a drive shaft with shiftable means for yrendering the drive shaftl and inner rotatary member active; of a safety attachment in-i `cluding a wheel secured to the drive shaft and having notches in its periphery,f'a"detent` means for preventing, when in one of its means and movable into the peripheral notches ofthe wheel only whenthe wheel is at operable by the cover when opened for lockl` ing the shiftable means in its shifted position `which renders the drive 'shaft and inner rotary member inactive.

2. Thel combination with an extractor 1n- Vcluding a bodyhaving an. inner rotary mem-lv positions, the opening of the cover, and a shiftable foot connected with the detent ber and a drive'shaft with -shiftable means for rendering the drive shaft and inner roincluding a wheel secured to the drive shaft and having notches in its periphery, a denotches of the wheel only when the wheel is at rest, for permitting of the shifting of the detent means to a release position, andmeans operable by the cover when opened for locking the shiftable means' in its shifted position which renders the drive shaft and inner rotary member active; of a. safety attachment tary member inactive, said means including a bolt shiftable to an engaged locking position with the extractor driving mechanism when said mechanism is inactive, whereby to to hold said mechanism inactive while the cover is open.

Signed at New York in the county of New York and State of New York this 28th day of November A. D. 1927.

JOSEPH GARIGLIO.

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