US2456369A

US2456369A - Switch control means for slicing machines

Info

Publication number: US2456369A
Authority: US
Inventors: Brustowsky Morris
Original assignee: U S Slicing Machine Co Inc
Current assignee: U S Slicing Machine Co Inc
Priority date: 1942-05-08
Filing date: 1942-12-22
Publication date: 1948-12-14
Anticipated expiration: 1965-12-14

Description

M. BRUSTOWSKY SWITCH CONTROL MEANS `FOR sLICI-NG MACHINES Dec.- 14, 19487 3 Sheets-Sheet 1 Original Filed. May s, 1942 A TTOR/VEYS,

Dec. .14, 1.1948. M. BRus'rowsKY- SWITCH CONTROL MEANS FOR SLICING MACHINES Original Filed May 8, 1942 v 3 Sheets-Sheetv 2 \Q www m www@ W www. hw W Dec. 14, 1948. I M, BRUSTOWSK( O 2,456,369

SWITCH CONTROL MEANS FOR SLICNG'MACHINES Patented Dec. 14, r1948 Y SWITCHLIGDNEROL MEANS-.FOR SLIGING.

MACHINESA Morrissrustowsky; Brooklyn, assignon-to..4 U2 Si SlifcingfMaohne Company;.La^..=l..ol::e,Inchl aaconporationztoiilndiana Originali" application May 8, 1942;, Serial' No;I

442,186; Dividechand this application-December 22; 1942; ScriaiNo; 469,79?

8 Glaimss. (Cl. 146-102) This invention relates to improvements .ini a switch contrer mechanism for slicing machines and! this .application is a divisional'y applicationtaken= from my previous-copending-newf` arbam cloned' applicationfor slicing: Machine, Serial Number"442,186, led-Mayfg 192121 Slicingfmachines-- of'A vthe type employed fon-slicingmeats, breadlandsimilar commodities employ a motor driven knife-and-f'a supporting table=upon which the artic1e.b,eing. .sliced is mounted.

The supporting table is movabl'etowards and aware imm: the.: knife te.:k bring.; thei artic-leel to be sliced, into;y operative; relation 1to-J the; knife.;

In the'more ,modern'slicing machines, .the movement .of thefsupportingftable:relative totl the knife; may bel eiected eithermanually, on by. enmechel anism which in .turrn is operated by the:v same motor:vilhchisiernployedgtmdriveitlieimite;..y

Itis to the raforementioned-ftype"of: slicinggmar chine that the:V present: invention4 pertains;

Such; machines; as'` aforementioned; employ a mechanism which may bei operatively; cennectech With-` theV motor; which: drives: the knife when it, is desired` tofoperate theftablevby power.V

This?operativefconnection between'theftable op,.- erating` mechanism and-thev-motcn genera'llyconf sistsfof a.v clutch whichmay-be: operated: fro-mithe fnonti'of the, machine;

In*,suclrgmachinesJt-is:highly desirableto. have the table, operating mechanism outs. of operative engagementiwith `the motonsatialllztim s;thatz.the motorfis-.notinroperation.

This .isftrne icnther; reasons that;first,iiirre:- lie-yes thegmot'or of: the loadfincidentaltozoperae. tion of thetahle .upon startingrof:thematorandi second; .itzprevents injury: t0.: the.. operaton by un.-

expectedmperation of the tableimmediatelywhenfl the-rmotor,'startsgeneration.4

It;l is;- one; object: ci.: the;l presentainvention: tot mici/ide.- a: control mechanism:y vvliereby'-,v the: tablea operating mechanismz is. neven operatively conf.- nected: with the, motorfwhenrthegmotor; is: atzrest;

It `is-anotl'ler. obi ect of, theinventionitc:` provideV a .control mechanism in which .the 1 switch Whichi controls the4 circuit to.` the at motor,l cannot bei op; erated to close the circuit of thezm'otor" if the.; table, operating. mechanism is; operatively;` connectedwith thefmctor;v

It is still ,ai further object# of f' tirez-invention.to provide. a control mechanism; which-,.,w'hen-'th'ez motor is in4 operatiomanclzthe;tablef operating. mechanism ist-operatively; connectedtoithe motor; the-fcircuitzof:thegmetorfcannotbecpenetoystepn the`v motor; untilafter the@ tab-le; operating-,mecha anismihasfbeemdiseonnected:immane-motor:

5 operatively" connectecL with thee` motor; thus .f per;-

mitting: of driving@t the 'knife-f, bw the.l motor-f and manualfoperaton, ofi the: table.'.inclependently` of..

the:tahlefoperating.mechanism;. Wit-hf the. alcove:.objectsiin. View,- reference-will..

lo;` nove: be.Y had f. to` thee following specificationy andi claims; and-theaccompanying:drawingsinwhich Figure2 1'- is alongitudinalisectionalviewitakeni. fromffrontfto-Urear of afuconventionalltypef of;.slicA-- ing-machine illustrating.' apor-tion ofthe'# controlf s mechanism 1 of thefpresent' invention,

Figure 2 is a detail plan view of the machine;

parts 'beingf brolienY awayLv illustratingf the l' motor and 'theimeehanism-iriyL Whichthe knifelis driveny thereby,-v

2o.. Figure; 3f iseaeffragmentary vertical"A sectional View lillustrating-a= portion i of the table-operating mechanism and lthe clutch by whichI it-isfopera-f tively connectedtoA themotor, and;

Fifgure LLieja-:detail 'viewfpar-tly in-elevation and# f partly in section illustratingrthe controlfswitcho the motor'andrits operativeconnectionewith theL clutch operating element. n

Figure` 5 is' a detail-transverse'- `sectional Viewl onrtheY lines 5-5/ of Figures 1 and 2;

Figure (iis a detailseetional view 'onJ the line 6--6 of Figure 5; and

Figure- 7 is' adetail horizontal sectiona1-view entire-line'l-Tof Figure 6. l

Referring to the "drawings byl referencei char the base of the machine, saidbasepreferably bein@ hollow'as illustrated. f

Dep-ending fromA the base, thereraretwofpare titionsionwalls 6 and; and slidably-fmounted'in'A 40;these Walls, and extending tlfiroughf ancpening 9 in theirontfwall 8pt-"the base; tlfiere-is--at rod I Beyond the-frontL` Wall 8 of' the' base',- the= rod2 Hl` isf supported inea. sleeve bearing 251m-cruntedy upon theouterA facefoff'thef front Wallll and upon`1-y i5-dts outer extremity, the rod If is=provid`edwith an operating knob 181 As: illustratediin" Figure 1; the' rod l0 iSpro--v vided with an= annulargroove A I.T Which;l When-theL parts l are: irl-the 'positions illustrated'- in Figure 1.,

' occupiesa1positionvwithinthesleeve bearing 2.5i

Ufponr-its-:inner end; thev rod l 0f carries-ia: cam"y member 1 2.0;* which: has: a cam', surface;A 2111 which-*.1 terminatesf-.atcitsupper end fin; aicurvedfseat: I6

R'eferrin'grtolfiguref Zeni thdramngsathegreie 'ierence character I5 designates an electric .metenand through the medium of a flexible coupling I4, this motor drives a shaft I2 upon which the knife H is mounted. Also carried by the shaft I2, there is a driving worm |31 which meshes with and drives a worin gear 32 mountedupon a shaft 28. The slicing knife Il is rotatably mounted Vat the rear of the machine and is driven by the shaft I2 by means of suitable: belt and pulley ara rangements within the housing 9, Figure 2.

As best illustrated in Figure 3 of the drawings, the shafts I2 and -28 pass through a housing 29 in right angular relation to each other and the gears I3 and 32, heretofore mentioned, are enclosed within said housing.

Further referring to Figure 3, .it will be `noted that the shaft 28 extends beyond the bottom wall of the housing 29 and loosely mounted upon the extended end thereof, there is a pulley 24 around which passes a belt 34. Y

The belt 34 operates the table driving mechanism which is also disclosed in my copending application Serial Number 523,009, led Februaryl a rod 20, whichrod extends longitudinally-in-` teriorly of the base and on the leftside of the machine.y Y' v i When the motor I5 is-operating the knife II will be rotated andthe reciprocating table is adapted t be moved freely by hand back andv forth out .of andinto operative relation with the knife in such `a mannerthat slices `of the article operated upon may be cut lby the knife.

Means employing the power of the motor I to reciprocate the table includesl the .pulley 24 and an additional pulley 23. The pulley 23 is carried by a vertically disposed lshaftor bolt mounted in a plate or bracket secured within the front part of the base of the machine. The belt 34 is disposed in a horizontal plane-within the base of the machine and .-is supported by and passes around the pulleys 23 and 24.`

An arm 36 depending from the sleeve-like bearing is secured by bolts 35 or the-like. The lower end of the arm 3B carries a housing 31, one side of which-is removably secured to the housing by bolts 39 or the like. f

The flights 42 and 43 through the housing 31 and inwardly with Vrespect topinch blocks 40 and4| which-are carried by the housing 31. A star wheel 44 mounted within the casing 31 and disposed between the flights 42v and 43 ofthe The

pins

41 and 48 are of suchlength that when they are moved inwardly of the housing they extend'between the arms of the star wheel to prevent rotation thereof but to permit rota-- tion thereof when they are'withdr'awn from the the Abelt 34- pass.

The

pins

41 and 48 are alternately moved inwardly and outwardly of the housing by two stationary .cams 50 and 5l carried by the base of the machine. Cam 50 is located just in advance of the pulley 23, whereas cam 5I is -located just in advance of the pulley 24.

Each of the cams i5t and 5I consists of a bar having a beveled face 52 upon its free end and each of the

pins

41 and 48 has a head 53 upon its outer end.

The

pins

41 and 48 are normally forced inwardly of the housing 31 by means of springs 54 and the beveled faces of the cams are adapted V-t'o engage behind the heads of the pins to withdraw them from the housing against the action of said springs 54.A

- moves in a step by step motion in a clockwise direction as indicated by the arrow B in said figure. Y'

The arms-46 of the star wheel 44 are of such length that when one of them is disposed at right angles to one of the flights of the belt, it will bite the belt and pinch it against the corresponding pinch block 49 or 4I, thus locking the housing 31 to one of the flights of the belt and causing it to move in theV direction of movement of that flight of the belt to which it is locked.

`Operation of table drive In Figure '1, the housing 31 is illustrated at substantially the endlof its movement to the left with one of they arms 46 in engagement with the pin 48 and also biting the flight 43 against the pinch block 4l. At this point, the pin 43 engages the cam 50, the beveled edge 52 of which rides beneath the head 53 of the pin 48 and withdraws the pin 48 outwardly of the housing 31 and out of engagement with that arm of the star wheel which is shown as biting the flight 43 of the belt against the pinch block 4 I.

As'soon as the pin 48 has been disengaged from the star Wheel, the star wheel is free to move in a Iclockwise direction as indicated by :the arrow B'.

As the star wheel starts t0 rotate, the bite between the arm 45 thereof and the pinch'block 4I is relieved and that arm 46 of the star wheel which is shown at the left of the center in Figure 7 moves first into engagement with the flight 42 of the blt, biting it against the pinch block 40. As the star Wheel continues to rotate, the last mentioned arm 46 thereof engages the pin 41 to arrest rotation ofthe star Wheel 44 and to lock" yfthe housing 31 to the flight 42 of the belt.

By locking the housing 31 t0 the night 42, the belt moves the housing to the right until it reaches the full extent of its movement in this direction. VWhile the housing moved towards the right, thepln 48 (Figure '1) cleared the cam 50 and was again projected into the housing under the influence of its spring 54, thus positioning it in the path of the next arm of the star Wheel which is to bite the flight 43 of the belt when the housing 31 reachesv the full extent of its movement to the right.

AWhen the housing has reached its extreme right hand position, the beveled face 52 of the cam 15| (Figure 5) engages behind the head of the pin 41 and'withdraws it to a point where it disengages the star wheel and permits it to turn another step in the clockwise direction to move thatl arm illustrated at the right ofthe center u `into biting engagement with theflight 43 of the "iibelt andinto engagement with the pin 48 to menaces;

5 lacht-.theshousingrto the beltnztl'iandimovesthe: housingzagaimto the letti'.

Also: carried: by: the extension; ot; .the :shaft: 23;. andai operatively; connected... theretm. there is; a; clutch member z' 69'.' which 1" is*` IrioVedisil oir clutclfri'rigv engagement-il with: the pulley 24 by means oit-a clutch fork el f lever; 68 .which-is' pivotallym'ountcdfaswat 6.4 10i` Whiclr, carriesza roller. 6.812 thatgri'dess thefican'rface.:

22h of the.,I cam'. memberi 2'Ilzaszthe1rod5. lllzis'A open--v ated :andirfwhih :comesrto-restin-.thercurved seat r:

I-6.: oftthe' carri-'.:membe'r4 -whenathe- 5 rodcl lli is; irriitsf innermostipositinzaseillustratedfi` Extending froIni=the-outer, iacesoff.thefrightranev guiar: endf, eXtension-.Mijofthe levert IS there'eisaar` hooked; arm- 66 and-:extendingfrom thee.` housing i Scatta-.point substantialfl-yfA above the' hookedarnfrv githereis v-an arm 6:7 .l

Connected .ations ofitsv. endszto .thewhookemarin coil- .springr6,5; they tension. oi vvhich'i` tends'l at yall.; times to rockthez leven: 63x about its spivotal point 6.4;.inz the .proper directionV to: move lthe clutch. member 60, into clutching,-v engagenrentvvith: thei pulleyZA. i

By: reference: to Eiguresrlf and f3, .it-will be obvious.- .thatv when the .rod I :is in .its Ainnerr'nosti po sitina as. shown :in Eigure 1. andl the. roller :681 of the; lever 53 isaturestin thefsea-t;Isof1the--cammembergll; the :lever 6:3,Wi11yb`eA -held-nssu'ch :pos-ie tion that the .lclutchz-meniber;Giwill be:disengaged with relation=to the.pulleyi2i4ziandff-the tableoper-r ating.- mechanism. is; not or'ierativelyl connected with'pithe moton; but; isV freefior. manual: operation;

Still referring to saidlguresgitwill befn'otedthatiftthe-Lrod; I 0 befpulledfoutwardly vofi'vthe-lbase orftozthe-leftain-Figure- 1; the roller 63.f.o'f.the lever 6'3 will leavethe seatt Ieaof-the camomemberfz.. ande iride dowrrtheE camsurfaceA 221 thereof As .the roller- 63 Jridsdovvnrthef cam suriacefl ofthelcamvmei'nber; thusipermittingimovementoi the. lever.: 63 about zits:.pivotal'.` point@ 64 undery .fthe influence ofiv thets'pring-i' 65; to r move theY clutchA memberrinto,clutchingaengagementnwiththe puh..

ley;2.4 thereby toloperatively connecte.theta/ble` operatings-meehanis'zn with .ther motore I'i Inisaid; liguref` 4,-. theisvlitchi is. illustrated in. dotted: lin-esein-.its -,onl orccireuit: lclosinga'position, andfina-fnll.; lines,. in; its:=..`o'fiz 'or circuitopening; positioni Pivotally. connectedllasfatnn to the switch toggle lever 1B, there is a latch rod 'I3 which extends through a passga'llli th sleev`e bearing 25 ina plane,aboveA tlneplarier othe .r o d,.. I Itand`- directly over the annular groove, llthreof ,and in a direction at right angles lto sidrod IUS Near its free-end;` the latchV rod' 'I3 iisfprovided with aout out portion 15, rtlrleepurpose of-Whiclm` Will-,hereinafter appear. n

With ytheparts in their positionswas illustrated inflligure Land in full lines in,Figure 4, the circuit of;,the motor is open and th.e..machine isf-ati rest with--thepivoted lever 63 in thattpositioninqwhich it. holdsfthe. clutch element 0V against clutching engagement With the pulley 24.

With the parts ritl'iese p'sit/inskthe latch rod 'I3 rests-in the annular groove; I1 of the rodrlll..

see:"ffignrei;y thus locking thee/ ame in its\ini 1er most position and thereby preventing operation of the clutch member 60.

Upon movement of the switch lever 'I0 to the dotted line position in Figure 4, the circuit to the motor is closed and operation of the motor and the knife I I begins.

tots and. out?.

It; vvillv now* beA apparent' that; iis-theerod' III-fis; moved'.outwardlyy torefiect operative engagementy offthe clutch member and-5 pu1-ley; .tlf1er` annular: groove Il'jofnthe rod moves out'` of lthe cutfrllfilioli-l rod.. lit, which portion1is ofiuflldiame.te-1",.-.U9SSGS;1- intothe cut out. portion 751.ofthelatch rockz'll; ina; which .position oi; the rod: lll', the. late-hl: rod; s; locked against operation by thezs'vvitclr leverx'bvf 25.3 reason of the facta'that upon attempmtofmove the switch-,lever 'II);=of theswitchv4 tofthe.ri-ght,. the'endiwallt ofy thecut outportion 1.5.:of-.fthez latch` rod` will. engage the: rod. llt andithusfxpreeventoperation. of the switchlever; Thus; t'lleaciit-x cuit to the motor-cannotbe openedfsolong as'.y thefrodslfsis in its outermostiposition: andthef table operating mechanism is operativelyrcone neet'edfvviththe motor.

If however, with the mac'zhine-` inoperation,

3531 with the table operating mechanism operativelyfv connectedI with the motor,I the rod3 I0 is-'moved-f invvardly of the base-to-disconnect thev table opg-4 eratingmechanism, the annual groovev IIoft'he rod" lil comes to position beneath-the'latcharod" 4401i 'I3 and permitsof its passing through-said groove upon attempt to move the swit'chleven'lidto its 'oi position andvop'e'n the cricuit of"the motor I5;

Thus, it willb'eapparent that when Athe ma-A ;45wchine is at rest, the tableoperating mechanism..

cannot.. be, operatively connected^4 with the mo: y tor until after the svvitchhas beenoperated't.vl clos-e the motor circuitandthat 0110.: the` table. operatingA mechanisrnhas been4 operatively con,- nected with themotonthe switch cannot hoop-.- eratedv to open the motor, circuit untiLafterthe. table operating mechanism has been discon. nectedrelativeto the motor.

Having thus describedi the invention; whatisclaimed as new is:

1, Arlcontrol mechanism fora. foodpslicing ma'- chine having a knife and a supportngetableimov ab1 etowar.d;andaway from thefknifeftcibring the article being sliced4` intoperativerelation:,tivtlfle;V i knifeand. embodying anselectric motorgaclut'chzin;

af transmission adapted' to transmit power` frnilfray said electricl motonto saidtable; airstcontrol-` device to. control. the: starting andgstopping ofiV saidrelectric motor, asecond` control `devicebeingf "separately operable from the rsftcontroldevicee andv adaptedtoy control the engagement `and disengagement of said lclutch, and interlocking` means: betvveerrsaid controlY devices, said inter-1 locking meansv embodying a-recesslin one ofthe, \controlfdev.icesin which a portion offthef otherl control device slides, and the other control device having a recess movable into and out of register with the first said recess, and operating to permit the engagement of said clutch only when the rst control device is in a predetermined po- 1,; sitionz and to permit the stopping ofthe motor only when the second control device is in its disengagedposition. 1

2. A control mechanism for a food slicing machine having a knife and a supporting table movable toward and away from the knife to bring the article being sliced into operative relation to the knife and embodying an electric motor, a clutch in a transmission adapted to transmit power from said electric motor to said table, a nrst control device being adapted to control the starting and vstopping of said electric motor, a second control device beingseparately operable from the first control device and beingiadapted to control the engagement and disengagement of said clutch, and interlocking means between said control devices, said interlocking means embodying a recess in one' control devicein which a portion of the other control device slides, and the other control device having a recess movable into and out of register with the rst said recess, and operating to permit the engagement of said clutch only when the first control device is ina predetermined position.

3. In combination with a slicing machine having a slidable reciprocable carriage movable in a rectilinear path,` and a motor driven rotatably mounted knife, disconnectible means between the motor and carriage to permit the carriage `to be reciprocated by the motor, a control mechanism to start and stop the motor, and interlocking means between the control means and disconnectible means, said interlocking means embodying two elements, one of which is provided with a recess in which the other element slides, and the other element having a recess movable into and out of register with the first said recess, whereby to permit stopping of the motor only when the .carriage is not in motor driving connection with the disconnectible means.

4. In combination with a slicing machine having a slidable reciprocable carriage movable in a rectilinear path, and a motor driven rotatably mounted knife, a control means for the motor to start and stop the motor, disconnectible'transmission means between the motor and carriage to, permit a driving connectionbetween the motor and the carriage to allow the carriage to be reciprocated by the motor, and an interlock between the transmission means and the control means, said interlock embodying two elements, one of which is provided with a recess in which a portion of the other element slides, and the other element having a recess movable into and out of register with the rst said recess, whereby to prevent stopping and starting of the motor when the transmission means is in driving connection with the motor` 5. In combination with a slicing machine having a slidable reciprocable carriage movable in a rectilinear path, a motor driven rotatably 'mounted knife, a disconnectible transmission between the carriage-and motor, a control mechanism to start and stop the electric motor, and interlocking'means between the control mechanism and the disconnectible transmission, said interlocking means embodying two elements, one of which is provided with a recess in'which a portion of the othery element slides, and the other of said elements having a recess movable into and out of register with the first said recess, whereby to permit connectionvof the disconnectible meansf with the carriage only when the control mechanism is in apr'edetermined position whereby the motor may be stopped only whenV the transmis`- 1 sion mechanism is in disconnected position.

6. A control mechanism for a food slicing machine, embodying a clutch connecting the motor to a reciprocable table, a motor control device, a clutch control device for connecting and disconnecting the reciprocable'table with 4the motor, and interlocking means between the said control devices, said interlocking means embodying rods individual to said motor and clutch control devices, one of said rods having a recess in which the other rod slides, and the said other rod having a recess movable into and out of register with the first said'recess, said interlocking means be ing operable to permit the engagement of said clutch to drive the reciprocable table only when the motor control device is in its on position.y

7. A control mechanism for a food slicing machine, embodying a clutch connecting the motor to a reciprocable table, a motor control device, a clutch control device for connecting and disconnecting the reciprocable table with the motor, and interlocking means between the said control devices, said interlocking means embodying a bearing, rods individual to said motor and clutch control devices, said rods slidable in said bearing at an angle to each other, one of said rods having a recess in which the other rod slides, and the said other rod having a recess movable into and out of register with the first said recess, said interlocking means being operable to permit the engagement of said clutch to drive the reciprocal table with the motor only when the motor control device is in its on position.

8. A control mechanism for a food slicing machine embodying a clutch connecting the motor to a reciprocable table, a motor control device, a clutch control device for connecting and disconnecting the reciprocalcle table with the motor, and interlocking means between the said control devices, said interlocking means embodying nonrotatable rods individual to said motor and clutch control devices, one of said rods having a recess in which the other rod slides, and the said other rod having a recess movable into and out of register with the rst said recess, said interlocking means being operable to permit thev engagement of said clutch to drive the reciprocable table only when the motor control device is in its on position.

MORRIS BRUSTOWSKY.

REFERENCES CITED The following references are of record in the le of this patent;

UNITED STATES PATENTS Name Date Hochriem Feb. 6, 1917 Number FOREIGN PATENTS Country Date Germany Nov. 1, 1930 Number Thomas Apr. 21, 1931.