US2644743A

US2644743A - Pouring apparatus for filtering operations

Info

Publication number: US2644743A
Application number: US21258A
Authority: US
Inventors: Galen H Clevenger; Loran A Creglow
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-04-15
Filing date: 1948-04-15
Publication date: 1953-07-07
Anticipated expiration: 1970-07-07

Description

y 1953 e. H. CLEVENGER ETAL 2,644,743

POURING APPARATUS FOR FILTERING OPERATIONS I Filed April 15, 1948 36 64 66 54 22 8 s2 INVENTORS GALEN H. .CLEVENGER LORAN A. CREGLOW lamp/4 5412% AT ORNEYS Patented July 7, 1953 OFFICE POURINGIAPPARATUS FOR FILTERING OPERATIONS -Galen H. Clevenger. Newtonville, Mass, and Loran A. Creglow, Salt Lake, Utah Application April 15, 1948, Serial'No. 21,258 3 Claims. (Cl. 23-259) The present invention relates to pouring apparatus, and more particularly to apparatus useful in the chemical or metallurgical laboratory to handle gang operations in pouring liquids, as for example in the filtering of liquids in chemical analyses.

In analyses and assays for chemical and metallurgical purposes it is necessary to pour and filter liquids many times. This is usually accomplished by placing the funnels in a funnel rack, and manually pouring the liquids out of beakers into the funnels one at a time. The work is exceedingly laborious when a large number of liquids need to be handled. Furthermore there is the danger of spillage at each operation. So far as we are aware no satisfactory method orapparatus has previously been devised for gang operations with liquids for such purposes.

The principal object of the present invention is to provide a simple and inexpensive apparatus for convenient gang pouring of liquids, particularly for purposes of filtering. To this end and with other objects in View as will hereinafter appear, the invention comprises the apparatus hereinafter described and particularly defined in the claims.

In the accompanying drawings Fig. 1 is a perspective view of the preferred apparatus according to the present invention; Fig. 2 is a plan view of one form of beaker tray; Fig. 3 is a view similar to Fig. 2 but showin a beaker tray to accommodate smaller beakers; Fig. 4 is an end elevation showing the operation of the beaker frame; Fig. 5 is a detail view showing the means for effecting the tilting operation, and Fig.16 is a detail view of the frame locking means.

The illustrated embodiment of the invention comprises a stand 6 having a funnel rack 8 of conventional form, this rack being provided with a plurality of openings H] to accommodate funnels in the usual manner. For purposes of illustration two funnels I 2 capable of discharging into beakers M are shown in Fig. 1.

Arranged in back of the filter rack 8 is a tiltable frame Hi. This frame comprises L.-'shaped end brackets l8 and a center bracket 20,, all rigidly secured together by a back rod or strut 22. The frame is adapted to carry beaker holders or trays, two of which are illustrated at 24 in Fig. 1.

The shape of each tray 24 is indicated in Fig. 2. The tray comprises a plate of sheet metal bent as indicated in Fig. 4 to form front and rear walls 26, the edges being reinforced by rods or

wires

28 and 30. The plate 24 and the front wall thereof are provided with suitable openings of a shape and size to receive the beakers. Each opening has a circular portion 32 communicating with a front opening 34 which accommodates the lip of the beaker. The beakers are received in the trays as indicated at 36 in Fig. 1, two beakers being there shown as mounted in the tray.- The openings 32 are spaced similarly to the openings I0 in the funnel rack. A similar tray is shown at 38 in Fig. 3for smaller beakers. The tray 38 is provided with reinforcing rods or wires shown at 49 for the front and 42 for the rear. It will be noted that the rear rod 30 of the large tray 24 is curved forwardly at its ends, Thus, the spacing between the ends of the

rods

28 and 30 of the large tray 24 is the same as the spacing between

rods

40 and 42 of the small tray 38. In either case the front rod 28 or 4|] rests on one of the L-shaped end brackets I8 and the center bracket 28 while the rear rod, whether 30 or 42, likewise rests on the same brackets and is retained by pins 44 extending upwardly from-the brackets. In view of the uniform spacing of the ends of the rods, the front wall of the tray, and hence the lips'of the beakers, will be in the same position relative to the funnels, irrespective of the size of the beakers.

The beaker trays are provided with suitable means for liftin and carrying them. As shown in Figs. 2 and 3, suitable holes 46 are provided at opposite ends of the tray to receive carrying hooks or tongs.

The frame I6 may be tilted from the full line position of Fig". 4 in which the beaker trays are substantially horizontal to an angle of somewhat greater than 90 to the dot-and-dash line position of the same figure. To this end the center bracket 20 is formed at its forward end with a gear segment 48, which meshes with a worm 5!! journaled in the center of the funnel rack 8 and arranged to be turned by handle 52.

Extending over each opening in'the beaker trays is a pouring and retaining rod, the several rods being indicated at 54. The ends of the rods. at the rear are bent as indicated at 56 in Fig. 4 to be received in a long shaft 58 which is journalled at its ends in the two L-shapcd brackets l8. At the center the shaft is journaled in a bearing 60 in the top of the L-shaped center bracket 20. The shaft is provided at one end with a hand knob 62 whereby the entire gang of pouring rods 54 may be turned from the position shown in Fig. 4 to an upright position so that the beaker trayscan be inserted or removed. To provide for locking the rods in one position or the other, a knurled wheel 64 is threaded on 3 the shaft 58 immediately adjacent to the bearing 80, and a disk 66 is secured to the shaft 58 on the opposite side of the bearing from the wheel 64 as indicated in Fig. 6. By tightening the wheel 64 against the bearing the shaft is caused to bind so that the rods 54 are locked in position.

The pouring rods 54 may be provided with rubber sleeves 68 shown in Fig. 1, as is common in this art.

As shown in Fig. 4, the pouring rods when in beaker-retaining position are arranged at an angle with respect to the trays so thatthe edge of each pouring rod contacts the lip of the beaker and extends forwardly over the beaker to a point above the funnel. tiltable frame is slightly above and back of the The axis of rotation of the being movable with the frame when the frame funnel holes ID, to maintain the end of the pour-v ing rod always over the funnel, as indicated in Fig. 4.

In operation the tiltable frame 16 is set in horizontal position and the pouring rods 54 are swung out of the way. A

tray

24 or 38 containing any desired number of beakers is then laid on the frame with the rear pins (or 42) against the pins 44 on the L-shaped brackets. It will be understood that a corresponding number of funnels l2 will be set in the rack 8 and these fun-' nels may be provided with filter paper if filtering operations are to beperformed. The shaft 58 is then turned into the position shown in full lines in Fig. 4 whereby the pouring rods 54 engage the lips of such beakers as are in position. The shaft 58 is then locked by the wheel 64. The frame is then tilted to such a position that liquid runs from the beakers into the funnels. As the liquids run out of the beakers the frame is tilted by giving an occasional turn to the handle 52. It will be understood that the rate at which the frame is tilted will be determined by the rate at which the slowest filter can accommodate its liquid. Since the beakers are handled without agitation and are moved smoothly from one position to another, any sediment in the beakers is not stirred up. The liquid is in'effect decanted from the sediment, thus diminishing the work called upon to be performed by the filters. Ultimately the entire frame is tipped up through an angle of somewhat greater than 9 0 as indicated by the dot-and-dash lines of Fig. 4 in order to drain all of the liquid from the beakers.

position and the gang pouring rods are released and turned up to the position which will permit removal of the beaker trays.

As heretofore noted, the trays may be most easily removed by suitable hooks or tongs passed through the openings 46. particularly satisfactory .in that the entire tray of beakers may be carried to, say, a hot plate for heating if such operation is called for by the analysis, The tray may be simply set on the plate. After the heating operation the tray may be lifted to transport the beakers to the filter.

Having thus described our invention, we claim:

1. Pouring apparatus comprising a funnel rack having openings to receive funnels, a tiltable frame having provision for holding beakers in alignment with the several openings of the funnel rack, means for tilting the frame to turn the beakers into pouring position, a plurality of pouring and retaining rods to align with the lips of the individual beakers, a single rod-supporting member on which all of the rods are mounted The 1 frame is then restored to its original horizontal This arrangement is' is tilted, whereby the relationship of any rod with respect to a beaker is maintained throughout the tilting :movement. 7

'2. Pouring'apparatus comprising a funnel rack :having openings ,to receive funnels, a tiltable frame, a removable beaker tray having beakere receiving openings to align with the openings of the funnel rack andhavin means to position the tray'on the frame, means for tilting the frame to turn the beakers into pouring position, a plurality of pouring and retaining rods to align with the lips of the individual beakers mounted in the tray, a single rod-supporting member on which all of the rods are mounted at their ends, said rod supporting member extending in back of the beakers,-the rods being arranged to extend downwardly and forwardly to engage the lips of the beakers to hold the beakers in the tray and to hold the'tray on the frame, a locking de-' vice for the rod-supporting member to hold the rods in beaker retaining position, and a manual device operable independently of the frame for turning the rod-supporting member to turn the rods as a gan toward or away from the beakers."

3; Pouring apparatus comprising a funnel rack having openings to receive funnels, a tiltable frame, a removable beaker tray having beakerreceiving openings to align with the openings of the funnel rack, the frame having'end brackets,

the tray having supporting rods to rest on the end brackets and the brackets havingpositioning means to engage the rods, gearing to tilt the frame to brin the beakers into pouring position, a shaft extending between the side brackets above and in back of the frame, a gang of pouring and retaining rods mounted in the shaft to engage the lips of the'individual beakers and ar-' ranged to maintain a fixed relationship with respect to the beakers during a tilting movement of the frame, and manualmeans operable independently of the tilting movement of the frame for turning the shaft to swing the rods as a gang into or out of engagement with the breakers.

GALEN H." CLEVENGER. LORAN A. CREGLOW.--

References-Cited m the file of this patent UNITED STATES PATENTS Number 7 Name Date 768,605 Keller et al Aug. 30, 1904 1,368,687 Bennetts Feb. 15, 1921 1,606,400 Cheney Nov. 9, 1926 FOREIGN PATENTS Number Country Date 11,352 Great Britain Mar. 14, 1912 of 1911 v 21,279 I GreatBritain Jan. 9, 1908 of 1907 X

Claims

1. POURING APPARATUS COMPRISING A FUNNEL RACK HAVING OPENINGS TO RECEIVE FUNNELS, A TILTABLE FRAME HAVING PROVISION FOR HOLDING BEAKERS IN ALIGNMENT WITH THE SEVERAL OPENINGS OF THE FUNNEL RACK, MEANS FOR TILTING THE FRAME TO TURN THE BEAKERS INTO POURING POSITION, PLURALITY OF POURING AND RETAINING RODS TO ALIGN WITH THE LIPS OF THE INDIVIDUAL BEAKERS, A SINGLE ROD-SUPPORTING MEMBER ON WHICH ALL OF THE RODS ARE MOUNTED AT THEIR ENDS, SAID ROD-SUPPORTING MEMBER EXTENDING ACROSS THE FRAME ABOVE AND IN BACK OF THE BEAKERS SO THAT THE RODS EXTEND DOWNWARDLY AND FORWARDLY TO ENGAGE ONLY THE LIP PORTIONS OF THE BEAKERS, MANUAL MEANS FOR ROTATING THE RODSUPPORTING MEMBER INDEPENDENTLY OF THE TILTABLE FRAME TO CAUSE GANG-SWINGING OF THE RODS TOWARD OR AWAY FROM ENGAGEMENT WITH THE BEAKERS, AND A LOCKING DEVICE FOR THE ROD-SUPPORTING MEMBER TO HOLD THE RODS IN BEAKER-RETAINING POSITION, THE RODS AND ROD-SUPPORTING MEMBER BEING MOVABLE WITH THE FRAME WHEN THE FRAME IS TILTED, WHEREBY THE RELATIONSHIP OF ANY ROD WITH RESPECT TO A BEAKER IS MAINTAINED THROUGHOUT THE TILTING MOVEMENT.