US2379957A - Grinder - Google Patents

Description

July 1o, 1945. l 5. J'. FEIGHT' 2,379,957

Y GBINDER. i

Filed June 2, 1942 3Sheets-Sheet 1 /N VEA/Tof? OSCAR J. PEGI-1T,

July 1o, 1945. Q, J FEIGHT' 2,379,957

GRINDER Filed June 2, 1942 I5 `Sheets-Shed 2 OSCAR J.- Fach-rj,

O. J. FEIG HT July 10, 1945.

GRINDER,

Filed June 2, 1942 3 sheetsf'sheet l:5

mf s EJ. w

Patented July 10, -1945 Gimmna Oscar J. Feight, Columbuahio, assignor to The Jeffrey Manufacturing Company, a corporation of Ohio Application June 2,

8 Claims.

This invention relates to a grinder and more particularly to a garbage grinder. l An object of the invention is to provide an improved simplified and easily demountablc garbage grinder.

'cient liquid seal Where the common motor and grinder rotor shaft extends into the grinding casing. A' further object of the invention is to provide improved rotor structure for a grinder.

Still another object of the invention is to provide improved means providing for the removal lof the housing of a grinder and simultaneously closing the discharge opening thereof.

Other objects of the invention will appear hereinafter, the novel features and combinations being set forth in the appended claims.

In the accompanying drawings,

Fig. 1 is a side elevational view of the grinder comprising my invention;

Fig. 2 is an end view adjacent the grinder end' of the device of Fig. 1;

Fig. 3 is an enlarged transverse sectional view through the grinder with the feed chute removed;

Fig. 4 is a sectional view through the axis vof the rotor of the grinder; and

Fig. 5 vis a plan view of the garbage receptacle;

Fig. Bis a vertical sectional viewV of one end of said garbage receptacle;

Fig. '7 is a sectional view taken on the line 'l-1 n of Fig. 6,` looking in the direction of the arrows; and M Fig. 8 is .an enlarged View of certain parts showing particularly thel sealbetween the rotor and one wall of the grinder casing.

The grinder of my invention is constructed particularly for the grinding of garbage and one of the particular uses to which it has been put is the grinding ofV garbage on war ships, though its use may obviouslyr belextended to other fields, for example, it may be used on any kind of ship or in hotels or restaurants.

The grinder comprises a base` IU, having as an integral part'thereof a standard II, upon which is mounted an electric motor 42. The motor I2 has the usual rotor including a shaft which is mounted upon bearings at opposite ends ofthe housing of motor I2, which shaft is pro- 19422 serial No. 445,433

(ci. 2er-ici) vided with an extension. ii, which extension con- Y stitutes the rotor shaft of a rotor it of grinding mechanism It. l The grinding mechanism i5 also includes a housing or casing it. Said housing or 5 casing It includes an end wall or plate Il the bottom of which is welded to an angle member lli, which angle member lil is a part of the standard II and'extends transversely across the'base ill, the bottom of said angle member lil being lo welded to said base it. Welded to the end plate Il and forming a reinforcing support therefor is a bracket I9 having legs on opposite sides of one end of themotor l2, which legs extend downwardly adjacent the ends of the angle member l5 It and are rigidly attached to said angle mem` ber it and to the base Ill as by welding. The top of the bracket' id includes a transversely extending cross piece 2t. It is thus seen that the end plate il is rigidly and permanently attached to the base Il! particularly by means of the bracket i9 and angle member it. Said plate Il isprovided with a central hole which is closed in part vby a disc 2i which in eiect forms a part of the plate il as it is preferably rigidly attached thereto as by welding. The disc 2i is also provided with a central opening through which the shaft extension i3 extends.

It is extremely desirable to provide a liquid or water tight seal between the plate I'I or any extension thereof, or, in other '.vords, between the wall of the housing or casing la adjacent the motor I2, and the shaft I3.. 'To this end I provide a cupped bushing 22 having a iianged l portion on the inside of the disc 2I which bush- '35 ing 22 is removablyattached to said disc 2l as by machine screws 23 extending through the disc 2I andthreaded into the iiange of the bushing 22. The bushing 22 has a central opening slightly larger than the adjacent portion of the shaft 40 I3 thereby permitting said shaft I3 to extend freely therethrough. The cupped shaped portion of the bushing 22 is preferably provided with a seal 24 which may be formed of a U-shaped annulus in which is provided an annular ring of non-metallic composition material, leather or the like, around which Vis a spring 25 which maintains a' portion of the composition ring in wiping contact with the adjacent portion of the shaft I3. This particular type of' sealY per se is well knownA in the art.- .In addition, the left hand portion of the cupped part of bushing 22 is also preferably` provided with a seal 26 formed by a U- shaped annulus in which is mounted packing of leather or composition material 'in'wiping contact withthe shaft I3. This'type of packing is also per se well known in the art. However, the provision of the water tight seal between the shaft I3 and the Wall or plate I1 above described is believed to be new with me. To insure further effectiveness of the seal provided between the bushing 22 and the adjacent portion of the shaft I3, in which the bushing 22 `may be considered asI a part of the plate I1, I also provide a grease fitting 21 by which grease is supplied to the seal. 'I'his grease, of course', not only perfects the seal but also lubricates it to maintain minimum of friction between, said seal and shaft I3.

Before describing the rest of the housing or casing I6 I shall now describe the structure of the rotor I4. The shaft I3 is provided with a shoulder 28 adjacent the bushing 22 against which shoulder 28 and upon which shaft I3 is 'pressed a rotor end disc 29, said disc 29 being held in place by a key 30. Also pressed upon the shaft I3 and held against rotation by the key 30 is a, plurality of spaced discs 3l. Adjac'ent the right hand end of the shaft I3 is 'a second end disc 32.. Extending between two end discs 29 and 32 and through appropriate openings in the discs 3l and 32 and into the disc 29 is a,

plurality of pins 33. The pins 33 are provided With headsV 34 which abut against the outside surface 'of the end disc 32.- The opposite ends of the pins 33 extend into bores in the end disc 29 but preferably do not extend entirely through said' end disc 28. Surrounding each of the pins 33 and between the discs 29, 3l and 32 is a plurality ofl sleeves 35 which are only provided on alternate pins 33. Said sleeves 35 act as spacers to maintain each of the discs 29, 3l and 32 in proper relation when the rotor I4 is clamped together as hereinafter described.

0n the other alternate pins 33 from those carrying sleeves 35 I provide swing hammers 36 which are provided. with sharp leading and trailing edges adjacent their outer ends whereby they may be reversed when their leading or working edges become dull. The swing hammers 36 are held in proper spaced relation between the discs 2.9, 3| and 32 by means of spacers 31 on the associated pins 33.

The free or outer end of the shaft I3 is threaded and receives a clamping nut 38 which cooperates with a disc spacer 39 adapted to clamp against the end disc -32 and also against a pin holding plate 48 which has a larger diameter than spacer 39 and extends over the heads 34 of the pins 33. When nut 38 is tightened, pressure will be applied to the end disc 32 andI to the pins 33 and thereby clamp all of the parts of the rotor I4, except the swing hammers 36, rigidly together since the end disc 29 is held against the shoulder 2s on the shaft la. It is thus to beV seen that I have provided a simple rotor' structure and one which may be readily assembled on the shaft ex tension I3. It is furthermore to be particularly of the housing or casing I6. It4 may be stated that the remaining structureof the housing or casing in addition to that above described is substantally entirely removable as a unit and this removal can be effected with the rotor I4 completely assembled, thus .providing ready access ings.

to the rotor I4' while it remains in its completely assembled position. This characteristic is also extremely desirable in connection with the original assembling of the-rotor I4. Forming in effect a part of the aforedescribed end wall or plate Il in thecompleted housing or casing I6, though structurally removably attached thereto, I provide a housing end plate 4I. Spaced from the end plate 4I is a second housing end plate 42. The end plates 4I and 42 are essentially of the same construction. Along the general central axis of the plates 4I and 42 they areprovided l with enlarged openings into which the end discs 29 and 32 of the rotor I4 extend, as clearly illustrated in Fig. 4 of the drawings. The rest of the housing I6 is formed by a pair of curved plates 43 and 44 which extend between the end plates 4I and 42 and form opposite sides or walls of said casingv I6, said curved plates 43 and 44 being in fact built up of two or more plates which are preferably rigidly and permanently attached together as by welding, all as clearly illustrated in Fig. 3 of the drawings. It maybe pointed out' that the top portions of the two plates 43 and 44 form a maw or feed inlet'leading to the cylindrical reducing chamber ofthe grinder in which the rotor I4 rotates and the left hand plate portion of this maw is preferably made of relatively heavy material as illustrated in Fig. 3 of the drawings, since it acts somewhat inthe nature of a breaker plate and receives material which is thrown against it by the action of the rotor I4 when in operation. The bottom portion of the reducing chamber within thehousing or casing I6 includes a screen 45 which is preferably formed by a plurality of -transversely extending screen bars 46 which have end spacers attached, as by welding.- The screen 45 is removably clamped in place on opposite ledges formed in end plates 4I and 42 by clamp screws 41.

The central opening in the end plate 42 is closed by removable plate 48 which has afcentral bulge adjacent the nut l38. to provide for free rotation thereof. i Y

To clamp the parts of the casing I6 together and particularly to clamp them to the plate I1 which is above described as permanently attached to the base I0, I provide'a plurality of bolts 49 which are provided with appropriate nuts and whichaextend'through the end plates 4I and 42 and also through the end plate Il.

Some of these bolts 49 also extend through the plate 48 and thus removably hold it in position. This is clearly illustrated in Fig. 2 of the draw- It is evident that by -removing those bolts 49 which extend through the plate 48 said plate 48 may be removed, as by handles 18, while the remainder vof the-housing I6 is maintained in position.

Adjacent the top of the maw or feed inlet, the housingr I6 is provided with a generally circular top plate 5D which is welded to the end plates 4I and 42 and to the curved plates 43 and 44, thus permanently. attaching them together. A

`similar plate 5I is likewise welded to the plates 4I, 42, 43 and 44' adjacent the bottom of the housing I6 where the discharge opening for the reduced material which passes through the screen 45 is provided The plate 5I `rests upon a bottom member 52 which is preferably/welded to and forms a part of the base I0 and above an opening therein, said bottom member 52 being provided with a. discharge-opening 53 which constitutes an extension of the lower portion of the casing I6 and through which opening 53 reduced thereto, as above described, and this removal ma:r`

be effected with the rotor i4 intact simply by sliding said casing I to the right, as seen in Figs. 1 and 4 of the drawings.

When this is done' it is desirable to cover the opening 53 particularly if these grinders'are employed on ships because tools or parts may fall through the opening 53 and be discharged into the water and thus lost. To this end I provide a pla-te 55 (see Figs. 2 and 4) which is loosely held by one or more pins 56 adjacent one edge of the disc5I and as the housing I6 is moved laterally, the plate 55 extends over the opening 53. If it is desired, the plate 55 may be removed from the attaching pin 56 and clamped to the iiange lof `the bottom member 52 to close the opening. The plate 55 extends through a slot in the angle member I8, as clearly illustrated in Figs-1 and 4 of the drawings, and is normally positioned under the motor I2 and inside the standard Ii.

Attention is now directed to Figs. 1 and 2 of the drawings arid to the construction of the garbage receptacle and the feedchutes or passagewaysby which the garbage is fed-into the maw or throat ofthe grinder housing I6. Extending upwardlyl from the base Illand rigidly attached to the standard Ii is a pair ,of legs 51 formed .of angle members. Acrossthe top of the legs 51 is a supporting bar 5t. Mounted up'on the legs 51 and theV bar 53 is a receptacle 59 adapted to. receive the garbage which is to be ground by the grinding `edge of the left hand portion of the receptacle 59, as viewed in Fig. l of the drawings, is provided with a curved reinforcing rod @it which. provides a supporting ledge to support containers, such as garbage cans, used to feed garbage to the receptacle w59. Adjacent the other end, the receptacle is made of reducedwidth. by virtue of an inwardly positioned feed chute wall Musee Fig. 2) which is spaced inwardly from the right hand side wall of the receptacle 59, as viewed in Fig. 2 of the drawings, and in practice forms -a continuation of said right hand side wall. l In other words, the garbage within the receptacle 5e is moved along a path generally to the left of the center line thereof, as viewed in Fig 2, and to a position adjacent the right hand end thereof, as viewed in Fig. 1 of the drawings, where it is de'.A livered to a feed chute which I shall now describe.

Positioned to the left ofthe wall 63 (as viewed in Fig."2) is a wall 64 which extends to. a transversely extending wall 65. Parallel with the transversely extending wall 651s a` partition 66.v Thus I provide two chutes or compartments -81 and 6.8 both of which are open at the bottom and lead r to the aforedescribed throat 60. By reference to Fig. 1 of the drawings it lwill be seen that the partition 66 terminates above the bottom of the receptacle 59. The bottom portion of the'wall 64- to the right of the partition 66, as viewed in Fig. 1, or in other words adjacent the compartment 68, is opened and is provided with :a swinging gate 69 hinged at 10 to said wall 64. the gate 69 being positioned inside the wall 64 so the bottom thereof willswing inwardly under :the control of the handle 1| which is rigidly attached to said gate 69 and when operated will swing it about the hinge 10 with the bottom thereof swinging inwardly to the chute or compartment 68; It

is through this opening which is controlled by the .l gate 69 that the garbage is fed to the throat 60 and thus to the grinding mechanism. I5. Itis to be particularlyv noted that the opening in the bottom of the chute or compartment 68 is: not directly above the maw or throatof the grinding mechanism I5 but is spaced laterally therefrom and consequently if the operator uses his hands to force the garbage into the chute or comparte ment 68 it would not be possible for` him to extend his hands down into the grinding mechanism I5 sufiiciently to get them injured by the rotor .I4 when it is in operation. This is a safety feature of considerable practical importance.`

The tops of the two chutes or compartments 61 and 68 are separate hinged sloping lids 12 and` "I3, respectively, and each of these lids 12 and 13 is .provided with an operative handle, that for 12 being seen a'u 14 and that for 13 being seen at 15. The handles 14 and 15 preferably are provided with holes cooperating with a curved extension 16 formed on the wall 643 which provides I for locking the lids 12 and 13 in closedposition, as by la padlock. These lids 112' and 'I3 when unlocked may swing to opening position to' permit the application of water'to thechutes or compartments 61 and 68 to clean them out and also to clean vout the entire interior of the housing or casing I6 as well asjthe throat 6U leading thereto. It is, of course, evident that the chute 61 when its lid I2 is open permitsstraight line and direct action into the interior of said casing or housing It. Also leading to the compartment 68 is a water. supply including a control valve 11 whereby a continuous supply of water may be deliveredto the interiory of the vgrinding mechanism I5 to assist in the grinding operation, the` rate of now being controlled by said valve 1l?.

In thev operation of the device the` garbage to be disposed of will be dumped into the receptacle 5d and pushed by a rake into the chute or compartinent 61 while the gate t9 is swung inwardly.

A continuous stream of water will flow under the control of valve 11 to said chute 'or compartment @t and with the garbage through the throat t@ into the maw or throat of the grinding mechanism i5. The electric motor IE will, of course, 4 rotate the rotor Iii of the grinding mechanism where it will sink without leaving trace of the ship. The grinding `action will, of course, be

1 carried on .by the swing hammers 36 in cooperation with the screen d5. After `the grinder has been in use and it is desired to clean it out, the

various changes in4 thedetails and arrangement of parts without departing from the spirit and scope of the invention as defined by the claims hereto appended, and I wishtherefo're not to be restricted to the precise construction herein disl i closed.

Having thus described and shown an embodiment of my invention, what I now desire to secure byLetters Patent of the United States is:

1. A grinder including a rotor shaft, bearing means mounting said shaft for rotation, saidshaft having an extension on one side of said bearing means providing a free end thereof, a rotor mounted on said shaft extension all on one side of said .bearing means, said rotor including axially spacedreducing means positioned between spaced end plates at opposite ends of said` shaft extension, said reducing means extending radially substantially equidistant with said end plates, said shaft having abutment means adjacent said bearing means against which one of said end plates abuts, the other, end plate being adjacent the free end of said shaft extension, and means including a nut threaded on the free end of said shaft extension for clamping said adjacent rotor end platein position.

eter substantially as large as the path of said reducing means, the other wall member of said one end wall having.an opening large enough to slip it over said rotor while the rotor is intact, Vsaid housing also including intermediate enclosing wall means extending between and rigidly 2. A rotor construction for a grinder including -a shaft having a shoulder adjacent one end and threaded atv the other end, spaced plates one adjacent said shoulder the other adjacent the other end, pins extending into said plates and'having heads on one end resting against one of said plates on the outer side thereof, material reduc-` ing means pivoted on said pins, and means including a nut on the threaded portion of said shaft and. a pin holding plate on said shaft cooperating With and bearing against the outer ends of said pin heads to hold them in operative position.

3. Av rotorconstruction for a grinder includ-*- ing ashaft having a shoulder adjacent one end and threaded at the other end, spaced plates one adjacent said shoulder, pins extending into said plates and having heads-on one end resting` against one of said plates on the outer side thereof, material reducing means on said pins, and

means' including a nut onv the threaded portionof said shaft land a pin holding plate Yon said shaft cooperating with and lbearing against the outer ends of said pin' headsto hold them in operative position.

4. A grinder including a support, -a housing including an end plate rigidly attached to said support, said housing also including a second end connected to said other Wall member of said one end Wall and to the other end wall, said housing parts including said other wall member of said one end wall, said intermediate enclosing wall means and said other end Wall being removable as a unit while said grinder-rotor is intact.

6. A grinder including a horizontally extending shaft, a housing having spaced apart upright end Walls, said shaft extending through one of said vend walls and terminating adjacent the other without extending through it,'said one end wall including a pairof adjacent upright wall members one of which is provided with a liquid seal cooperating with said shaft, and a grinder rotor having material reducing means thereon,v

the other wall member of said one end wall having an opening large enough to slip it over said rotor while the rotor is intact, said housing also including intermediate' enclosing wall means extending between and rigidly connectedy to said other wall member of said one end wall and to Y the other end. wall, said housing parts including lio said other wall member of said one end wall, said intermediate enclosing wal-l means ,and said other end wall being removable as a unit while said grinder rotor is intact.

7. A grinder including a horizontally extend-V rotor while the rotor is intact, said housing also including intermediate enclosing wall means extending between and rigidly connected to s id other wall member of saidv one end wall and to the other end wall, said housing parts including said other wall member of said one end wall, said plate andspaced Walls extending continuously between the two end plates,a shaft extending through an opening in said first'end plate and terminating' within said housing and" adjacent said second end plate, saidhousinghaving means providing a bottom material discharge opening,

m'eans removably connecting lsaid second end plate and said walls complete as a unit to said 'first end plate, vand a material reducing rotor mounted on said shaft, the construction andarrangement being such that when said connecting means is released said-unit may be removed from said first end plate by movement of said unit along the axislof said shaft While said-rotor remains on said shaft. ,u

A 5; A grinderincluding a horizontally extending shaft, a housing having spaced apart upone of said end/Walls and terminating adjacent theother-without extending through it, said one end wall including a pair 'of adjacent upright wall members one of which is provided with a liquid seal cooperating with said shaftand.a grinder rotor having material reducing means thereon including spaced end rotor plates having a diaming shaft, a housing having spaced apart up-v rotor having material reducing means thereon intermediate enclosing Wall means and said other end wallv being removable as a unit while said grinder rotor is intact.

8. A grinder including av horizontally-extendright end walls, said shaft extending through one of said end Walls and terminating adjacent the other without e;Y ending through it, said one end wall including a pair of adjacent upright wall v members one of which is. provided with. a hole substantially the size of said shaft, and a grinder including spaced end rotor plates having a diright end walls,l said `shaft extending through ameter substantially as large as the path of said reducing means, the other wall member of said one end wall having an opening large enough to slip it over said rotor while the Vrotor is intact, said housing also including intermediate enclosving wall means extending between and rigidly connected to said other wall member of said one end wall and to the other end wall, said housing j parts including said other wall member of said one end wall, said intermediate enclosing wall means and said other end 4wall being removable `as a unit while said grinder rotor is intact.

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