US1131768A - Foundry-riddle. - Google Patents

Description

E. W. BEACH.

FOUNDRY RIDDLE.

APPLICATION FILED APR.16, 1914.

1,131,768. Patented Max:113, 1915.

"HE NORRIS PETERS 60., PHOTD-L/THOU WASHINGTON, D. C.

EDWARD WELLS BEACH, OF WATERBURY, CONNECTICUT.

FOUNDRY-RIDDLE.

Specification of Letters Patent.

Patented lillar. 16, 1915.

Application filed April 16, 1914. Serial No. 832,143.

To all whom it may concern Be it known that I, EDWARD XV. BEACH, a citizen of the United States, residing at WVaterbury, county of New Haven, and State of Connecticut, have invented certain new and useful Improvements in Foundry-Riddles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as w'll enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to riddles or sieves for the use of foundrymen in riddling sand and the like, and has for its object the provision of an all metal riddle, light in weight and strong and rigid in construction, and well adapted to withstand the hard usage to which such devices are subjected whether. used by hand or as parts of a shaking machine.

In the preferred embodiment of my invention, the riddle comprises a sheet metal body suitably reinforced, and has av sieve disk attached to the body in a very secure manner, but adapted for removal and replacement after the wires of the screen have become worn or frayed through use. More particularly, the riddle of my invention has a wire screen clamped at its edges between the inner and outer parts of a double hoop with inturned flanges, whereby the hoop may be driven into or out of a groove when the screen is to be renewed, this double hoop being attached in novel manner to the body of the riddle whereby it is securely held in place and whereby a broad, comfortable hand-hold is provided and other advantageous results attained, as will appear from the following detailed description and the accompanying drawings.

In the drawings, Figure 1 is a perspective view of the complete riddle; Fig. 2 is a section through the edge of the construction shown in Fig. 1; Fig. 3 shows a modification in which the inner ring, whereby the sieve is heldin place, is made separate and bent up over the lower reinforcing wire ring of the body of the riddle; and Fig. l shows a double hoop which overlaps the edge of the wire screen before the latterhas been bent down at its edge for introduction into the retaining groove or socket, wherein it is held when in use.

The body 1 of the riddle is made of heavy sheet metal, preferably with a welded seam, and is of uniform diameter from top to bottom to permit the introduction of the removable sieve. This body is reinforced to withstand twisting strains and heavy usage, the reinforcement including a wire ring 2 around the top edge held in an outwardly turned bead 3. A second reinforcing wire ring 4: is positioned near the bottom of the body and corrugations 5 are pressed into the wall of the body to give it greater rigidity. Preferably these corrugations are disposed at an angle to the axis of the riddle and are formed in truss-like configuration. By use of the corrugations a stiff body is obtained, even though a relatively thin and light sheet metal is used.

At the bottom of the body and spaced therefrom, to form an annular groove or socket of uniform width from top to bottom, is a resilient ring 6 of sheet metal, the upper edge of which is doubled back on itself and pressed down to form a reinforcement 7. The bottom edge of ring 6 is bent outward, as an annular flange 8 forming a broad, comfortable hand-hold, and then is bent up and around the lower reinforcing wire ring f and is stiffened thereby. in the construction illustrated in Fig. 2, this annular flange is integral with the main body of the riddle, but in Fig. 3 its upturned portion 9 overlaps a bead 10 of the body so that in the latter construction the ring 6 can be made of a separate piece of metal, this being of some convenience in the processes of manufacture.

The removable sieve disk comprises a wire screen 11 of circular outline having its edge gripped between the folds of a double hoop 12 made from sheet metal folded over on itself to form an annular slot in which the edge of the disk is received. After the wire screen is in position, as shown in Fig. 4, the double hoop is bent inward to tighten its grip on the edge of the screen and to bring it into position for insertion between ring 6 and the body of the riddle. This transverse bend in hoop 12 is made far enough back from the edges of the metal to leave a pair of inwardly projecting flanges 13 and 14., serviceable to protect the bend in the screen, and also serving as projections whereby the sieve disk may be pounded into its groove or socket, or may be driven therefrom when a new disk is to be inserted. By inverting the riddle and pounding on flange 14; with a block of wood, it is easily possible to drive the sieve disk out through the body on flange 13 and drive "the double'lioop12 into its groove or socket. Preferably hoop 12 fits tightly in its socket, and ring 6 is made sufliciently resilient to-tightlylgrip thehoop after it is once'in place.

With the construction-above described. the

frame is so reinforced by the Wire rings held inthe beads, and bythe corrugations in the body, that practically no twisting 'or Warping takes place even under severe use or abuse, and at the lower edge'of the riddle the'many thicknesses of 'nietal stiffen the'entire structure, and by preventing deforma tion-protect the wires of th'escree'n from- 1indue stresses. The broad hand-hold at the lower edge makes the riddle comfortable in the hands of foundrymen, and the inturned flanges 13 and 1 11, in addition-to servinga's meanswhereby the sieve disk "may be driven in 'or 'out, protect from wear those *partsof the screen Wh-ichhave been bent and somewhat distorted-by the bending-of ring 19. Cross-wires under the screen are not=necessary with riddles of this construct-ion, and their omission lengthens the life of the screen-by eliminating'the chafing and localizedwear ordinarily incident to the use of cross-wires.

:It is common infoundry practice to put a small iron disk in the riddle with thesand and allow the-disk'to slide backand forth over-thescreen when the 'riddle -is in use. The diskserves to cut the sand and to keep the mesh of the screenopen. vV'iththe pres ent construction the sidesorbody of the-ridd-l'e are protected from the impact and wear of this disk by the inturned annular flange '13. In time, the wires'of the screen will Wear out and become broken, but the main portions of the riddle are relatiw' ely permanent and ordinarily will outlive a number of screens,-'a1rd inasmuch asthe screens are "easily re'pla'ceable', the device as a whole is economical and in many respects superior to the wood-rimmed riddles which have been heretofore =s0 comlnonlyused, but Whichare now becoming difficult of production because of 'th'e scarcity of a suitable quality of lumber for the rims.

I- claim:

1: In affoundry riddle, the combinatio'n of a cylindrical sheet metal body having a broad lower edge forming a comfortable hand-hold, a resilient ring spaced therefrom to form an annular socket, a wire screen for said riddle bent downward around its edge, and a double hoop integral throughout and formed of a-single metal sheet folded on itself, :said hoop gripping the edge of said screen'andfitting snugly but'rem'ovably in said-socket, saidhoop having a pair of inwardly projecting flanges overlapping the bend 'in said screen and serviceable as shoulders for driving the hoop into and out of its socket when the screen 1s to be renewed.

a sheet metal body, a resilient ring spaced therefrom to form an annular socket of uniform Width from top to bottom, a hoop htting snugly in said socket and consistingof ametal sheetkfolded on itself, and a Wire 1 8. In a foundryriddle, the "combinationbf a cylindrical reinforced sheet metal body, a resilient ri'ng within said body and secured thereto, said ring; forming a broad comforta ble'hand hol'd and beingspaced from the body to forl'nanannu lar socket, and a sieve disk-comprising a- Wire screen having its edge bent down *and gripped between the sides of a folded-sheet of metal forming a hoop,-'said 'h'oop fittingtightly insaid socket and having a pair of inturned annular flanges "overlapping-the bend in the wire screen, and serving as exposed shoulders whereby said hoop may be driven intoor out of its socket when the sieve disk i'sbeingrenewed.

4.- :In afoundryriddle, the combination of a cylindrical --sheet -metal body, reinforcements for said-body, a resilient'sheet metal ring- Within said'b'ody and spaced therefrom to forr'n an annularso'cket of uniform width from top to bottom, said ring having-its lower edge bent outward to form a wide hand-hold, and a sie-ve' diS'k comprising a wi're screen bordered-b a -metal rin-g, said ring fitting tightly -'in said socket but being removable therefrom, and having an inturned flangeund'erlying a portionof said screen whereby the =removal of-the ri'ng froin' its socket *may be facilitated.

'5; In a foundry riddle, the coinbination of a sheetmietn body having reinforcements, a sheet -1net-al ri'ng with-in said bo'cly and *spaced' therefrom to' form an annular ios socket,-a-nd having its lower edge *shaped 'to'forin a "broad handheld atwhich the riddlemay bejgripped by' 'the foundryman,

and asieve dislmomprising a Wire screen 'b'en t down around its-"edge and gripped between the folds of a'd'ouble sheet 'metal ring,

said la'st named-ring being reniov'ably held betweenthe-resilient ring and'thebody of the" riddle, and having inturned annular flanges overlapping the bend in the wire screen and serviceable fordriving the sieve I disk into-orout ofits position insaid socket.

6. In a foundryriddle, the combination of a cylindrical sheet metal body, a reinforcing Wire'near tl'ie' bottoihof said body and h'eld' in a bead thereof, a resilient sheet metal ring within-said body and spaced therefrom to form an annular socket, the lower edge of said ring being bent outward to form a broad hand-hold and overlapping the wire inclosing bead of said body, and a removable sieve disk fitting into said socket and yieldingly held between the riddle body and the resilient ring; substantially as described.

7. In a foundry riddle, the combination of a sheet metal body having at its lower edge a wire ring held in a head, a resilient sheet metal ring fitted within said body and spaced therefrom to form an annular socket, the lower edge of said annular ring being bent outward to form a broad handhold and overlapping the wire inclosing bead of the riddle body to give a double thickness of metal over said wire, and a removable sieve disk having its edges held between the folds of a hoop, said hoop be ing seated in the socket between said resilient ring and the body of the riddle, and being removable therefrom when the sieve is to be renewed.

8. In a foundry riddle, the combination of a reinforced sheet metal body having near its lower edge a reinforcing wire ring, a resilient sheet metal ring fitted within said body and spaced therefrom to form a socket, the lower portion of said ring being bent outward to form a broad hand-hold and being turned up over said wire ring for reinforcement thereby, and a removable sieve disk comprising a wire screen gripped at its edges between the folds of a sheet metal hoop, said hoop being adapted to enter the socket between said annular ring and the body of the riddle and be gripped thereby to removably hold said screen in place.

9. In a foundry riddle, the combination of a sheet metal body of uniform diameter from top to bottom and reinforced by a pair of wire rings held in beads, a resilient ring having its toredge doubled back for reinforcement and having its lower edge bent outward, as an annular flange and turned upward over one of said reinforcing rings and affording a broad hand-hold at the lower edge of the riddle, said resilient ring being spaced from the body to form a socket, a double hoop consisting of a single metal sheet folded on itself and a removable sieve disk consisting of wire mesh gripped at its edge between the folds of said hoop, said hoop being adapted to slide down through said body and fit into the socket between the resilient ring and the lower portion of the riddle body and having inwardly projecting annular flanges lying respectively above and below the wire screen whereby the ring may be driven into or out of its socket when renewals of the sieve disk are to be made.

In testimony whereof I affix my signature, in presence of two witnesses.

EDWARD WELLS BEACH.

Witnesses:

ARTHUR R. HUSKER, EDWARD J. ZITZMANN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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