US890112A - Carrying and pressing apparatus. - Google Patents

Description

PATENTED JUNE 9, 1908. G. S. WHEELWRIGHT. CARRYING AND PRESSING APPARATUS.

APPLIUATION FILED FEB. 8. 1907.

5 SHEETS-SHEET 1.

No. 890,112. PATENTED JUNE 9, 1908.

G. S. WHEELWRIGHT. CARRYING AND PRESSING APPARATUS.

APPLICATION FILED FEB. 8, 1907.

5 SHEETS-SHEET 2.

atto'anuzo PATENTED JUNE 9, 1908.

0. S. WHEBLWRIGHT.

CARRYING AND PRESSING APPARATUS.

APPLICATION FILED FEB. B, 1907.

5 SHEETS-SHBET 3.

51 w ar a H301, @MA/J W atto'wun o Wm 10mm PATENTED JUNE 9, 1908.

C. S. WHEBLWRIGHT. CARRYING AND PRESSIN G APPARATUS.

APPLICATION FILED IEB. 8. 1907.

5 SHEETS-SHEET 5.

1 1 1 00 m l oz .mm'it UNITED STATES PA a nronrc.

CHARLES. STOREY WHEELWRIGHT, OF BRISTOL, RHODE ISLAND.

CARRYING AND PRESSING APPARATUS.

Patented June 9, 1908.

To all whom it may concern:

Be it known that 1, CHARLES STOREY WHEELWRIGHT, of Bristol, in the State of Rhode Island, have invented a new and useful Improvement in Carrying and Pressing Apparatus, of which the following is a specification.

The invention is an improvement u on the apparatus shown in several patents eretofore granted to .me, more especially the Fatent No. 783,602, and has for its object the better working and the preservation of details of the former mechanism. Like the former mechanism it has been designed for use with a rendering plant in which garbage L or ofl'al is subjected to the hot water process discharged from the conveyer.

for the extraction therefrom of oil or melted grease; and it consists in the employment beyond the carrying screw in the conveying cylinder of the said former patent, of. pressing fingers working automatically to squeeze the tankage which has passed beyond said carrying screw together with a perforated plate or perforated plates in said cylinder to carry out therefrom more oil and water extracted from said tankage.

It consists further in the employment of a knife working in combination with the screw thread edge of said conveying screw to cut and subdivide the tankage in .its passa e through the conveyer and in a substantially water-tight and air-tight frame for said knife. l V i it consists further in a modification of the regulating valve of said conveyer against which the tankage o erated upon in the cylinder packs and on t is opening of which the tankage passes out of the cylinder.

it consists further. in means whereby to maintain unobstructed the perforations through which water or water and oil, are

it consists further in an improved bed in which the main portion of the conveyin cylinder lies and in means attached to sai bed for the adjustment of said perforated plates to and from the conveying screw and .the removal of said plates from the cylinder;

and further in details of construction.

ln'the drawings Figure lis alengthwise elevation of apparatus embodying my invention as seen from what is herein termed the front side. Fig. 2 is a lanof ap aratus shown'at Fig. 1. Fig. 31s a centra longitudinal section on an enlarged scale of that portion of the conveying cylinder which con tains the carrying screw, showing also fins,

adjustable perforated plates, and certain knives. Fig. 4 is a continuation of Fig. 3, showing on the same scale sections B and B and mechanism therein, together with a power engine and the lever operated, thereby. Fig. 5 is a cross-section, as indicated on a line drawn through section'B of Fig. 4. Fig. 6 is a rear elevation of the conveyer. Fig. 7 is a cross-section, as indicated on a line drawn through Fig. 3.. Fig. 8 is a longitudishaft E, which lias-suitable bearings, 71, in a rear-end piece, G at one end of said cylinder,

other bearings 2' near the other end of the cylinder including the additional sections, and still further bearings, (not shown), beyond the cylinder, near the operating mechanism. It has also an end thrust bearing i in said rear end piece 0 P, P, P, etc, termed in the old" patent fins, are pieces of composition metal,

cam-shaped, very numerous, following with an up-and-down or in-and-out vibratin -motion the convolutions of screw C as the atter revolves, and imparting frictional resistance to the garbage. They are ivoted at P between the longguides P he d in place on said cylinder by screw-bolts P A ca or cover P forms a protection for the slot a out which the guides P are placed and in which the fins work. The cap is held in place by screws The rocking motion of the fins is limited by set screws P.

The present conveying cylinder like that of the old patent has sections B and B beyond the carrying screw, and like the old patent it has a re ulating valve which later will be described m detail both as to its construction and mode of o eration, since improvements relating to sai valve are important features of'the present invention.

.c The oil and water given up by the tankage as the latter asses along the screw C is drainedfrom t e cylinder B by erforated plates in the shell of the cylinder These plates which in the present drawings are f shown as double plates 0, O and O 0 also, in connection with suction boxes or substitutes for suction boxes, herein described, impart a frictional resistance to the slippery garbage to insure its being carried forward by the screw; but unlike the plates for similar purposes in the old patent they are made adjustable to and from the screw C. The urpose of the adjustment is that the edge 0 the screw shall travelin shearing contact with the faces of the said perforated plates and thus keep the perforations in the plates open for the passage of water or water and oil. Provision is also made for the removal of the double plates and the insertion of others in their stead.

Heretofore where the perforated plates have not been maintained in contact with the edges of the screw the perforations have become clogged and it has been necessary to repeatedly remove the plates for the purpose of clearing the o enings and this operation has to be repeate so often as to greatly diminish the value of the machine. that by adjusting the perforated plates from time to time as the screw edges wear away so as to maintain the inner faces of the lates in shearing contact with the edges of t e screw the traverse of the same upon the faces of the plates acts with a shearing action on the edges of the 0 enings so as to shear off all the particles at t e plane of said faces and the particles thereupon will readily pass through the openings and the latter remain clear without the necessity of any removal of the plates.

The bed D upon which the conveying cylinder rests, is a heavy casting, in the form of a long box of substantially the same length as the conveying cylinder, with a height about equal to the diameter of the cylinder. It has perpendicular ends, while the sides incline inwards from bottom to top. Both the bottom and the top are mostly open to afford a free passageway for water and oil drawn from the cylinder as will 5- ppear. The said top consists mostly of an outward flange cast with the bed, surrounding the sides and ends of the box, to which flange is bolted by bolts, b, a similar flange surrounding downward projections cast with the conveying cyl-- inder. The top has two openings over which are the two before mentioned double perforated plates, 0, O and O, 0, extending across the apparatus from the front side to the back sir e right when looking along the conveying cylinder from the rear end.

The bottom of the bed or box consists likewise, mainly, of a flange cast with the box at the bottom, around the sides and ends, designed to rest upon a floor of the building. There are two long openings in the bottom of the bed which are closed by two conical- We have found.

beneath the conveying cylinder, B, the front side being the side to the scenic shaped castings, N and N extending below I said floor, which are bolted to strengthening pieces or supports D D and D and D, (presently to be described) by bolts 6 and to t e inner sides of the bed D by bolts b (see' Figs. 3 and l 7). The said conical-shaped castings connect with suction pipes N and N which are connected with suction pumps, (not shown), and thus the said bed D, castings N? and N and pipes are adapted to perform the well known office of suction boxes in paper machinery as set forth in the old across the bed from front side to back side.

ter cast with and upon the bed D, for the support of said shaft and gears, and also with small openings normally closed by plates (1, to be used in connection with the removal or adjustment of the double perforated plates, and theback side being rovided with long openings normally closed .y plates a for the actual insertion and removal of the said perforated plates. The two openings on the back side of the bed are between the long shelves 0, and a cast with the bed and closed, as. stated just above, each by a lon plate a bolted perpendicularly to said 'she ves, (see Figs. 2, 5, and 7,) which accordingly are of different widths, as shown, by bolts 0 etc. and of, etc. These openings are large enough to permit the egress and ingress through the bed of one of the double perforated plates 0, O or 0 O, as will be described. On the front side of the bed are similar projections or shelves I a a, but instead of being long, taken lengthwise with the bed and with their plates adapted to close long openings in the side, the are short, twelve in number, in six pairs, wit short plates or covers, a, bolted tothe'm by bolts (L8 and a and adapted to close an opening only big enough to withdraw, as will be described, an inclined block K Upon the outer supports D and D cast as aforesaid as a blocks K and K presently to be described, intervening between said sup orts D and D and ends of the perforated p ates O and 0 part of the bed D, rest inclined.

which it should be stated are let into the V 3 rest similar,

the adjoining ends of said perforated plates 0 and having corresponding shoulders, and like the said perforated lates is adjustable to and from the screw by the same means, and is at all times flush with the ,perforated plates, thereby reventing the lodging of material passing t rough the cylinder. A further support is furnished at the middle of each pair of plates 0, O, and O, O, by similar inclined blocks K and K resting uptin the above-mentioned girders or bridges L,

Each double perforated plate is strengthened by ribs R etc., extending downwards lengthwise of the plate or crosswise of the conveying cylinder, which ribs are grooved beneath, as shown, to embrace a strong metal block K before mentioned, and has other strengthening ribs R R etc., grooved to embrace other inclined blocks K along the middle of each double erforated plate. All these inclined blocks 2 rest upon similar clined blocks K which have their inclines on their upper surfaces, face to face with the lower surface inclines of blocks K before mentioned; and both the blocks K and the blocks K are grooved or flanged, as the case may be, at top and bottom, to fit each the other and also the ribs R above, and the supports D, D D and D, and the girders or bridges L, L,bel0w, as shown.

With or upon the bed or box casting, D, are cast, as stated above, u on the front side, several brackets K in whic are bearings for a long shaft A o erated by cranks at either end as shown, see Figs. 1 and 2). This shaft carries for each double perforated plate three bevel gears g (as mentioned above) which take into other bevel gears g on the outer end of three ins, t, t i which pass through the several plates a having each a collar Z", Z, on each side of said plates at, and each said pin having a screw thread on its inner end assing through a female screw in one of the b ocks K. It is obvious that turning the shaft A in one direction will move all the blocks K inwards and thus set the blocks K and with them the perforated plates, up to wards the carrying screw, and that turnin the said shaft A in the other direction wil have the contrary effect. The erforated plates when finally adjusted are hefd in position by set screws t and t To remove the perforated plate it is necessary to draw to the front of the cylinder the lower inclined blocks K by turning the screws t, t, t, which is done by turning the crank on shaft A Then draw out upon the back side of the cylinder the upper blocks K the plates a having been removed. Then restoring the lower blocks K to their places,

rest above them some strong planks (not shown). Now loosen the screws t and i",

(see Fig. 7), thus lowering the plate to a position on the planks from which it can be readily removed upon the back side of the cylinder upon again withdrawing the lower blocks by turning the screws as before. The perforated plates 0, O, 0 besides the strengthening ribs R running across the machine, have other strengthening ribs B running lengthwise with the machine.

The present conveying cylinder like the cylinder of the old patent, as stated above, has two sections, B and B beyond the conveying cylinder B and carrying screw 0, but the former of these, B, instead of being a mere passageway for the tankage, as in the old mechanism, is provided with presser fingers to squeeze tie tankage as it passes throu h the section, and with a perforated .plate let into the bottom of the section for the passage out of the cylinder of oil and watersqueezed from the tankage. This mech anism will now be described (see Figs 4, 5, and 8). The section B is cast with four platforms, C C, etc., surrounding long openings or slots in said section, to which are bolted at y four water-tight casings, C C etc., having each an upward hollow projection C, in each of which casings is pivoted by a pivot 11 a resser finger F, the same being a long meta arm with a concave inner surface 0.

Each of said fingers makes a close fit at its sides and ends with its casing C and with parts of the section B, adjacent to said casing, the two ends of the finger and corresponding parts of the casing and section being struck in curves'drawn on lines from the center of the ivot v, as radii (see Fig. 8). In order that t ese fingers F may work automatically, pressing inwards or yielding outwards according to the resistance of material. passing through the cylinder, they are provided each with an eyebolt Y and a spring R operating upon its free end, the said spring being coi ed about said eyebolt and confined between an enlarged end, Y, thereof, and a screw-plug, L, working through the top ofsaid hollow projection 1 The said finger F has bosses F, F at its free end, (one of them is shown-at Fig. 8), to receive said enlarged end Y of eyebolt Y. A pivot 12 asses through said bosses F, F and the en argement Y of the eyebolt. The eyebolt Y passes freely through a hole in said screwplug L and is threaded at its upper end to receive a screw nut Y .by turning which together with the screw-plug L the operation .of the presser finger F, as is obvious, may be anges as/s own at Figs. 4 and5, is

the regulating valve J in section B or the housing at the exit end of the conveying cylinder may at will be closed upon its seat, J which is the further end of section B, without revolving with-the main shaft E, together with further improvements in said regulating valve, and its modeof operation. These means consist primarilyof a clutch,

J J one-half of which, J is secured to a sleeve S working along 'main' shaft E to which said sleeveis feathered, as shown, while the other half, J is secured to the valve 'J made in two parts, bolted together by bolts b the inner face of whichvalve carries teeth e e., A rubber packing in said seat J is marked 1". The said sleeve S is moved forward and back uponthe shaft E,

. to which it is keyed as aforesaid, by a lever inder, as shown. The lever B is operated R formed in two parts or sides fastened toby a power engine E which in turn is governed by ahand lever L as shown. The.

power engine .E is an oscillat ng engine supported on trunnions' G having bearings in supports G boltedv to a platform cast upon the support of the casting which forms section B 4 I The valve J is provided with an adjustable stop L set up by set screws t", t", in the end 'of the cylinder, as shown, the office ofthe said stop being to limitthe movement of the valve J. Inthe form shown it surroundsthe sleeve S-as a loose collar.

The operation of this part of. the mechanism is as follows: The pressuregage of the power engine E? is set' at a given pressure, say 40 lbs, more or less, with the steam-or pressure fluid at the side of-the piston in saidengine E to carry the ".valveJ -,to its seat. When the pressure of thematerial in section B exceeds 'j this pressure upon the valve it will force thelvalve from-its seat carryingitbfibkand with it the sleeve S until the valve. strikes the said stop L when the workman o crates the lever L .tO'

throw steam-upon} e other side of iston of the-,powep engine E, which tius draws still furthe r'ba ck the sleeve S and sets the clutchda J thuscausing the valve J to revolve and the; teeth 0 ,13, to operate upon'the' material-l passing through the 'cylinder. *Bfy shiftingg'the lever the workman can, as is obvious, instantly close the-valve J..

-The sleeve S is enlarged at its inner end S, which immediately after the valve J reaches its seat and said packing ring 1", the

clutchbecoming disconnected, strikes against a second packing ring r set in the innerside of the head of the valve J, as shown.

I The before mentioned knife referred to as working in combination withthe screwthread of the conveying cylinder B is marked K (See Fig. 3.) -,It has an adjustment in a closed frame which when not 0 encd for removal of the knife is substantiafly watertight, and air-tight to prevent the escape of foul odors one side of which, a, is a part of the casting forming section A of the pipe by which tankage enters said conveying cylinder, while the other part, c, of the frame is bolted to said first part on either side of said knife. A cap, e 7, also, connectthe two parts or sides e and e of said frame, and the position of the knife to or from said screw thread is determined by a hand screw 11 secured to the end of said knife and working in the said cap, eflwhich carries also two set screws 8 and s to assist in-determining the .position of the knife. (See Fig. 7.)

' The cap 6 is'held upon the two sides e and e of the frames by clamps M pivoted at one end to lugs land Z on the casting A (see Figs. 1 and 2), and shaped at the other end to embrace eyebolts y, y, pivoted at y, 3

where they are held in a locking position by swing leversz, 2, on said pivoted eyebolts. By swinging said levers z, z, from said locking position, it is obvious that the eyebolts y, 'y, may be swung on their iivots, and the clamps M may be swung bac and the knife K removed. The entrance sections A and A bolted together, including the said knife frame, are bolted by bolts 0 c ,"e tc.,-to a platform about the entrance hole to the cylinder B. A is a cover for an opening in the side of pipe A to get at the interior of said pipe and the cylinder B.

The ate with the knife edge, mentioned in the early part of the specification, to form an absolute andinstantaneous stop to the material entering the conveying cylinder, is an important part of the present improvements. It consists of a steel plate Q with a knife edge q adapte'd to work instantaneously in a slot (1 across thecasting A by means of a power engine having double cylinders E E the piston rods r of which are secured by nuts n, n, to a'yoke Y to which theknife gate in turn is bolted. The said steel late or knife gate Q is provided with a pac ing box P packing" P and a packing gland P. It is unnecessary to describe the system of piping by which steam is admitted to one side or the other of the pistons in the iston cylinders.

The bearingi in the rear en piece C for the 4 draining pulp, and, by a mere enlargement of its parts, may be used asa sewage drainer.

.I claim,

1. In a carrying and pressing apparatus adapted to convey and press material saturated with and accompanied by water, the combination with a water-tight cylinder and carrying screw, of an adjustable knife set in a plane transverse to the axis of the screw and curved to conform to the transverse form of the screw and adapted to operate with the screw thread edge of said screw upon material fed forward by the screw, and a frame for said knife also water-tight and airti ht.

2. In carrying and pressing apparatus adapted to convey and press material saturatedwith and accompanied by water, the combination with a water tight cylinder and a carrying screw working within said cylinder, of an adjustable knife-having its blade extending transversely to the axis of the screw and adapted to cooperate with the peripher of the latter upon the material moved t irough the cylinder by the screw.

-3. In a conveying and pressing apparatus adapted to convey and press material saturated with and accompanied by water, the combination with a water-tight cylinder and carrying screw, and an entrance pipe to'said cylinder, of a knife adapted to operate with the screw-thread edge of said carrying screw upon material fed forward by said screw, and a frame for said knife, one sideof which is a part of the casting forming said entrance pipe, while the other side is bolted to said first side and to said conveying cylinder, the two sides being surmounted by a cap which is provided with a hand-screw rigidly secured to said knife. I I

4. In a carrying and pressing apparatus adapted to convey and press material saturated With and accompanied by water, the combination with a water-tight cylinder provided with a carrying screw filling the inner periphery of said cylinder, and perforated plates let into said cylinder and adjustable to and from said screw, of means for adjusting said plates, consisting of bloc" s with inclined faces, screws adapted to draw back or push forward the lower of said blocl's, bevel gears on the outer ends of said screws, and other bevel gears, upon a crank-shaft at right angles to said screws. 7

5. In a conveying and pressing apparatus adapted to convey and press material saturated with and accompanied by water, the combination with a water-tight cylinder provided with a carrying screw filling the inner periphery of said cylinder, of perforated plates furnished at each end with a strength: 'ening and supporting rib lengthwise of the plates and crosswise of the c linder and adapted to be let into the perip cry of said cylinder, and blocks with inclined faces, each said rib resting upon one of said blocks the inclined face of which rests upon the inclined face of a similarly inclined block.

6. In a'carrying and pressing apparatus adapted to convey and press material saturated with and accompanied by water, the combination with a water tight cylinder provided with a carrying screw filling the inner periphery of said cylinder, of removable perforated plates forming part of the wall of the cylinder, a water tight hollow bed supporting the cylinder and having openings beneath said perforated plates, such bed also having openings in a side wall through which said perforated plates may be removed, and suction pipes communicating with openings in the bottom of the bed.

7. In a carrying and pressing apparatus adapted to convey and press material satu rated with and accompanied by water, the combination with a water-tight cylinder and a carrying screw filling the internal periphery of the cylinder, of perforated plates let into said cylinder and forming a part of the wall thereof, means for adjusting said plates to maintain them in shearing contact with the edges of the screw, and a dead late arranged between and supported by two ongitudinally separated perforated plates whereby the same means for adjusting the perforated plates may be employed for simultaneously adjusting the dead plates so as to preventany obstruction of the passage of material over said perforated and dead plates.

. 8. In a carrying and pressing apparatus of the character described, the combination of a cylinder having a portion of its wall rated with and accompanied by water, the

combination with a water-tight cylinder and a carrying screw filling the inner periphery of said cylinder and adapted to revolve therein and perforated plates let into said cylinder, of

presser-fingers in said cylinder beyond said" carrying screws adapted to squeeze material passing from said screw.

10. In a conveying and pressing apparatus adapted to convey and press material saturated with and accompanied by water, the

combination with a water-tight cylinder and carrying screw and perforated plates let into said cylinder, of automatic presser fingers in said cyinder beyond said screw, boxes or I guides let into said cylinder in which said fingers are pivoted, eyebolts pivoted to the outer or free end of said fingers, radial extensions from said boxes within which said eyebolts are confined, and springs coiled upon the shanks of said eyebolts in said radial eX tensions.

-11. In mechanism of the class described,

' the regulating valve and valve seat, the main shaft and sleeve thereon, a clutch adapted to connect and disconnect said valve and said sleeve, and an adjustable stop to limit the enema backward movement ofirsaid valve, in comhination with a trunnioned block having a recess therein, a collar on said sleeve connecting said sleeve with said recess, a lever adapted to control the position of said trunnioned block, and an oscillatin power engine Whose piston is connected wit said lever.

CHARLES sinner WH'EELWRIGHT.

Witnesses: WILLIAM W. SWAN,

JOHN G. STETsoN.

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