US2715787A

US2715787A - Drossing bucket

Info

Publication number: US2715787A
Application number: US251575A
Authority: US
Inventors: Williams James Howard
Original assignee: Grinnell Corp
Current assignee: Grinnell Corp
Priority date: 1951-10-16
Filing date: 1951-10-16
Publication date: 1955-08-23
Anticipated expiration: 1972-08-23

Description

Aug. 23, 1955 J. H WILLIAMS ,7 7

DROSSING BUCKET Filed Oct. 16, 1951 4 Sheets-Sheet l i 6 E 0 25 i FFF: V V F|G.l /4a I L \J INVENTOR.

- onfi Ho wu rd Williams Aug. 23, 1955 .1. H. WILLIAMS 2,715,787

DROSSING BUCKET Filed Oct. 16, 1951 4 Sheets-Sheet 3 Z2 -4\6 l 5 i I I I I 4 I I z 44 i i a l A A I 59 "(J Q (T B'./

IN V EN TOR.

James Howard Williams ATTORNEY Aug. 23, 1955 J. H. WILLIAMS DROSSING BUCKET 4 Sheets-Sheet 4 Filed OCt. 1.6, 1951 W \Ef INVJ INIOR. do?? Howard W||||0ms ATTORNEY ported.

bucket Q th abp e d sc i United States Patent 2,715,487 FRRQ'SS N till- E! JamesHoward Williams, Lincoln, R. I., a ssignor to Grinnell Corporation, :Pidvidri'jRl' a ctirpora'tionbf Delaware c sstlta q malate a t e .b tt m' affh z ei e'en must beren oved periodically.

. l fhaj began ternary to de hi b sa d. h snst tq la 1 handled shoyel p :90 w.h sha i s aattiall However is meth d e a s ssasislsta le .it

hu -se 1 h k t le 19 lkr9h a t s s :t em v th d ess- MQEQVQI: ip a s I e danger to the .workmen.

An Object t zp e sn ME 9 al 9:P 9E l 9l apparatus operated by ,a sel contair ed -pressure cha m w ich is $9 .rosit oass a 4 9 tar-t es i nn tsom nssmtas with the dr s -t b .Y ;Q w the ha al izin a ete ia lz i 1; t e no n biecw .th vin ea v? wyi t e st dies the travel of the srs f ta zsm tiaamsm snwhish $9 nects the fluid pressure mechanism with the dross gathering parts of lthe .device, thus permitting the ,use of a relatively long ,force transmitting nernb er without the danger of its'binding where it enters the fluid pressure cylinder v The best mode in which it has been contemplated applyingthe principles of my improvements isisho wn in it the accompanying drawings, but these are primarily illustrative' because it"is intended that the patent shall cover by suitable expression in the appended claims whatever features of patentable novelty reside in the invention disclosed.

In the drawings:

Fig. 1 is an elevation of a dross bucket apparatus embodying my improvements;

Fig. 2 is a broken elevation of the bucket apparatus as seen 90 from the position shown in Fig. l, a small portion being shown in cross section;

Fig. 3 is an elevation partly in section taken as on line 33 of Fig. 2; and,

Fig. 4 is a plan view of the dross bucket taken as on line 4-4 of Fig. 1.

Referring now more particularly to the drawings the improved bucket apparatus has a suspension eye 10 or equivalent means for attaching the device to a crane boom or other support. This suspension eye is welded to a top closure plate 12, for a cylinder 14, provided with two flanged ends 14a and 14b. A series of studs 16 secure the top plate 12 to the upper flange of the cylinder 14, and another series of studs 18 serve to fasten another closure plate 20 to the lower flange of the cylinder 14.

A piston rod 22 passes through a suitable hole 20:? centrally located in the lower plate 20 and has its upper end fastened to a piston (not shown) within the cylinder 14. This hole 204: is provided with a packing gland 24 to prevent leakage of pressure around the piston rod 22. Fluid pressure is introduced into the cylinder above 2,715,787 R -me .A 23. 55

2 the piston through ahose 25 causing the piston to move downward, and an upward motion of the piston is achieved by introducing fluid pressure into the cylinder .below the piston through a hose 27. Fluid pressure is .of course e rhausted from one hose as it is introduced through-the other .hose.

Two

brackets

26 and 28 are welded to the outside of the cylinder 14.0n opposite sides thereof, and extend .outward therefrom ;beyond the flange 1412 at the loyver end of the cylinder. Four fixed depending

frame arms

30, 32, 34 and 36 are secured to these brackets by .bolts 38.

In the preferred form of my invention shown in the drawings two of the fined depending frame arms fiil and 32 are-secured to the'bracket;26, one on either side thereof and the other two frame armsfigland 36 .are similarly .secured to bracket 28. As these fixedframe arms extend downward from their respective brackets they are bent outwardas shown in Fig. 2. Similarlythese fixed frame arms are bent again into ,a vertical planeat their lower ends. ,Bolts 40 serve to prevent the upper yertical portions of the :fi ged frame arms from spreading under W ishm th z n d sa in pa which l be P sent y described.

A cr ssmsm e f lfa h e ifram atm 30a 32 together near their lowerends and similarly another smsmsmhs .4 f st o the th m ia fited

frame arms

34 and 3 6 giving :the depending ,partsof the device rigidity.

A snide membe 46 n pwe b w e the me b s? e fita We d thereto is-suitab Shain a i se tposi on to format guid beati 'fq fihs p to Ki 2 an r ve la .m sn a d p ston rod ch-Would au lim i :i the 21 3 299- h use of such a guide hearing makes ;it possible to have he ap aratus 9 an es ed len a th 31 .8 n .e. i ,mss anism .san hp be k mms i s in contac w th h ma e ia to be .m s w th th ee x n zi athh '1 dsa s pa t m m a sd devis t p rt a l sunnp ss iby murm ta le .SPRR ttii tae s A8 3 .0. 5. 5 55 h: hifi sa s 1 PI .%d: .9f l a .B V9$?ll1Y- .19 the fias 2 5? g as 3. 2 and 36 respectively by bolts 56 and the lower ends of which are likewise pivotally secured by bolts 58 to the said load carrying parts at side plates 60 thereof. As shown in Fig. 2 each of these side plates 60 has a reinforcing plate 62 welded to it to reinforce the bolt 58 secured to the side plate 60.

In general these load carrying parts comprise two complementary jaw units pivoted in such a manner to the formed lower end 22a of the piston rod 22 that vertical travel of this piston rod causes the jaw units to spread apart or close depending on the direction of the piston rod travel.

More particularly each of these complementary jaw units has a bottom plate 64 at the ends of which the aforementioned side plates 60 are secured, preferably by welding. These side plates are so shaped that when the jaw units are in the closed position each of the side plates of one jaw unit joins the corresponding side plate of the other jaw unit to form a closed side wall across both ends of the load carrying parts.

In this closed position the inner edges of the two bottom plates 64 also join to close the entire bottom of the load carrying parts; and to facilitate the closing movement of the two jaw units through the dross the said inner edges of the bottom plates are suitably tapered to form knife-like edges at 64a.

Force to effect the opening and closing movement of the complementary jaw units is derived from the fluid pressure piston-cylinder mechanism in the upper part funits in their closed positions.

a a 3 a of the device. This force is transmitted to the jaw units -by the piston rod 22 which is'appropriately flattened at its lower end 22a. A portion of this formed lower end fits between a pair of upstanding center plates 66 arranged parallel to the side plates 60 and welded tofthe bottom plate64 of one jaw unit, and another portion fits between a second pair of center plates 68' secured in the same manner to the other jaw unit. Bolts 70 passing through these'center plates and the portions of the plate j 22a whichfit between them serve 'to'piv otally connect each of the'jaw units tothe piston'rod 22; i

- In Fig. 1 of the drawings the solid lines show the jaw Fluid pressure has been introduced below the piston forcing it up and afiecting an upward travel of the piston rod 22. "The jaw units being pivotally connected to the endof the piston rod atA; this upward movement causes the jaw units to turn about-their pivot points Blwhere the supporting

members

48, 50, 52 and 54 are fastened to'the side-plates 60, and the jaw units are swung closed: 7

However, a jaw unit doesnot merely turn about the pivot point-B where its supporting members are'secured to' its sideplatesfbecausethe distance is fixed between this point B and the point A where the center plates are secured to the piston rod, and the upward movement of the "piston rod being in a straight line it follows that the point B must swing inward from the position it assumes f, when the jaw is open.

V twist land rock the device before the jaws are closed To permit these pomts B to swingthe upper ends of 7' the supporting

members

48,50, 52 and 54 are pivotally connected at C to the fixed

frame arms

30, 32, 34 and '36'respectively as'has been mentioned.

1 'Referring againto Fig.1 of the drawings, the dotted ,7 lines show the jaw units in'their openpositionsQ Fluid 7 pressure has beenintroduced above the piston forcing it down; This time the piston rod 22 pushing down on the center plates '66 and 68 at A causes the-jaw units to turn about their pivots B to open the jaw units. Holes 60a and 64b are provided in the side plates 60 and bottom plate 64 respectively to'allow the-galvaniiing liquid above the dross'to run out when the jaws have been closed; at the bottom of the tank and the device has been raised above the surface of this liquid preparatory to being swung away from the 'kettle to dump this dross. "Short lengths of pipe 72 are welded to the fixed frame 45 30, 32, 34 and 36 at various points to receive-the ends' of .rods (not shown) which the workmen use to thus making sure that the cutting edges penetrate into the layer of dross at the bottom of the kettle.

I claim:

1. A drossing bucket comprising a cylinder, four depending frame members having their upper ends secured to said cylinder, a supporting'a'rm pivoted to the lower end of each said frame membencomplementary jaws pivoted to 'the lower endsof saidsupporting, arms, a

piston rodfixed to a piston within said cylinder extend- 'ing vertically downward among said frame members and pivotally connected at its lower end to said complementary jaws, a cross member secured between two of said frame members near the lower ends thereof, an addiarranged centrally within'said frame and actuated by said pressure responsive means, cross members rigidly joining'certain ofv said frame members near the'lower ends thereof, means rigidly interconnecting said cross rnembersand including a central bearing axially spaced from said fluid pressure responsive means to guide the.

movement of said rod and give said frame rigidity, and complementary jaws hinged ion the lower endsof said supporting arms and hinged on the lower' end of said rod for"opening' and closing movement of the jaws in response to saidfrnovement of the rod.

References Citedin thefile of this patent a UNITEDSTATESPATENTS Symonds Apr. 28,1874, 418,231 Rucker et al g .De,c.-;'3l, 1889 564,038 'Urie July 14,1896

' 1,720,058 Rutherford July 9, 1929 2,188,672 Atkinson Jan. 30, 1940