US1419405A - Gold pan - Google Patents

Description

GOLD PAN.

APPLICATION FILED ULY 7,192+.

PatentedJune13,1922.

4 SHEETS-SHEET l.

E. 0. c. 0RD.

GGLD PAN.

APPHCATION FILED JULY 7; 1921.

9 Q 4G5 I Patented June 13, 1922.

4 SHEETS-SHEET Z.

E. O. C. 0RD.

GOLD PAN.

APPLICATIQN FILED JULY 7,1921.

3]. Ac 1 9,45 Patented June 11?), W22.

4 SHEETS-SHEET 4.

EDWARD O. C. $031), 0:? BERKELEY, CALIFORNIA.

GOLD EAN.

Application filed July 7, 1921.

To all whom it may concern.

Be it known that I, EDWARD O. C. Om), a citizen of the United States, residing at Berkeley, in the county of Alameda, State of California, have invented certain new and useful Improvements in Gold Pans; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to improvements in miners gold pans intended for use either in separating gold from sand or capable of use either with the sand wet or dry as conditions may require.

As is well known regions containing goldhearing sands, or gold bearing rocks which are crushed into sand, are often arid, and in such cases there is generally difficulty in securing an adequate supply of water, and in such cases economy in the use of water is especially desirable, while in all cases it is, of course, important to separate as large a percentage as is possible of the gold or other valuable metal which is to be separated from the sand.

According to my invention I provide a miners gold pan separated by a central partition into two chambers, the top of the par tition being somewhat lower than the side walls of the pan so that the sand and water may be shifted from side to side of the pan in the panning operation, as will be hereinafter more fully described.

In addition to the transverse partition just referred to, I may provide one or more additional deflecting ribs, with one or more pockets countersunk in the bottom of the pan to catch the heavier particles, and also to hold the amalgam when used; and I also may provide one or more trough-like guide grooves to permit the pouring out of the residue left in the pan.

My invention will be more fully understood after reference to the accompanying drawings, in which like parts are indicated by similar reference symbols throughout the several views, and in whic Figure 1 is a plan view of a simpleform Specification of Letters Patent. Patented June 113, 1922.,

Serial No. 483,076.

of pan constructed according to my invention.

Figure 2 shows a cross section along the line 22 of Figure 1, and looking in the direction of the arrows.

Figure 3 is a plan view of a pan generally similar to that shown in Figure 1, with additional features added.

Figure 4 shows a cross section of Fig. 3 along the line l4l ofsaid figure, andlooking in the direction of the arrows.

Figure 5 shows a pan generally similar to that shown in Figures 1 and 3, except that it is made elliptical and certain additional features are added; and

Figure 6 shows a cross section along the broken line 66 of Fig. 5, and looking in the direction of the arrows. i

Figure 7 shows a pan generally similar to that shown in Figures 1 and 3, except that it is made with a curved cross rib, oval in cross section, adapted to save the finest, gold dust.

' Figure 8 shows a cross section along the line 88. I I

Beferringfirst to Figures 1 and 2, A represents the main body of the pan whioliiS separated by the rib B into two chambers A and A and the said pan is also shown as provided with a pouring groove (4.

The rib B is preferably in the form of a flattened wedge,whose edge bis at a sulficient distance below the top of the sidewall of the pan to permit the contents of the pan, comprisingsand and water, to fall from one side of the pan to the other when the pan is tilted laterally, without sloshing over the periphery of the pan. The ends of the rib B are flared outwards to form the ears 7), and these cars are preferably concaved. inwards so as to form a gentle slope at the edge'of each of said ears, and to form corners or pockets a in which the metal is concentrated.

The side wall a of the pan may be set at any convenient angle, and the said side wall may be in the formof a truncated cone, or may be concavedsomewhat like thezo'ne of a sphere if desired; andthe said side wall may also be provided with a suitable head or flange o for convenience in manipulation.

In the form oi device shown in Figure 3, the pan is gen rally similar to that shown in Figs. 1 and 2, except that one of the two chambers, into which the pan is sub-divided, is provided. with an inwardly projecting tapered rib D, whose edge (Z inclines downwards; said rib being wedge-shaped in cross section, and the outer portion being provided with concavedears d which form, with the adjacent side wall of the pan, pock ets or corners a, similar to those already referred to, into which the metal collects.

In the opposite chamber of the pan from the rib D l provide a sunken trough or trap E in which the gold may be collected. This sunken trap E is preferably inclined downwards and outwards radially from the center of the pan, as shown at e in Figure 4, and the mercury may be placed in this to form amalgamated gold which settles in said trap. This sunken trap should preferably be at the lower edge of the side wall of the pan so as to be more effective in catching the heavy particles as the pan is vibrated.

1n the form of device shown in Figs. 5 and 6, the pan A is shown as elliptical in form, with the rib B extending along the major axis of the ellipse. The top of this rib B is inclined downwards, and the upper end of said rib may be at the same height as the top of the pan, while the lower end is at a considerable distance below the top 01" the opposite side of the pan. The shape of this rib B is otherwise generally similar to the shape of the rib B already described with reference to Figs. 1 to 4.

In Figure 5 l have shown an auxiliary rib D projecting into one of the two chambers, and generally similar to the rib D already retterred to, and in the same chamber I provide the sunken trap E, generally similar to the trap E already described with reference to Figs. 1 to 4; and in the other chamber 01" the pan 1 provide also a sunken trap E auxiliary to the trap E already referred to.

It will be seen that in all the various forms of device hereinbefore described, the pan is divided into two chambers, with or without the additional elements of the deflecting ribs and sunken traps.

Y'Vhile the pans may be more conveniently and economically made of circular or elliptical shape, as shown, and such shapes are more durable and stronger for the weight of metal comprising the pan, the pans may be made polygonal or irregular in contour if desired.

Having thus described my invention what 1 claim and desire to secure by Letters Patent of the United States is 1. A miners gold pan provided with a rib extending transversely of the pan and separating the same into two oppositely disposed chambers, the said rib being substantially in the form of a flattened wedge having its ends flared outwards to form concaved ears, substantially as described.

2. A miners gold pan provided with a rib extending transversely of the pan and separating the same into two oppositely disposed chambers, the said rib being substantially in the form of a flattened wedge having its ends flared outwards to form concaved ears, with a rib projecting from the side of the pan into one of said chambers, said rib being also wedge-shaped in cross section and having its edge tapered upwards from the bottom towards the side wall of the pan, substantially as described.

3. A miners gold pan provided with a rib extending transversely of the pan and separating the same into two oppositely. disposed chambers, the said rib being substantially in the form of a flattened wedge having its ends flared outwards to form concaved ears, with a rib projecting from the side of the pan into one of said chambers, said rib being also wedge-shaped in cross section and having its edge tapered upwards from the bottom towards the side wall of the pan, and a sunken trap provided at the junction of the bottom and the side wall of the pan, substantially as described.

i. A miners gold pan provided with a curved rib oval in cross section extending transversely of the pan and separating the same into two oppositely disposed chambers, the said rib being substantially in the form of a ridge steepest on the convex side of the curve, having its ends flared outwards to form concaved ears, and a sunken trap provided at the junction of the bottom and the side wall of the pan, substantially as described.

5. A miners gold pan provided with a rib xtending transversely of the pan and separating the same into two oppositely disposed chambers, with a rib projecting from the side of the pan into one of said chamhers, said rib having its upper edge inclined upwards from the bottom towards the side wall of: the pan, substantially as described.

6. A mincrs gold pan provided with a rib extending transversely 01 the pan and separating the same into two oppositely disposed chambers, with a rib projecting from the side of the pan into one of said chambers, said rib having its upper edge inclined upwards from the bottom towards the side wall of the pan, and a sunken trap provided at the junction of the bottom and the side wall of the pan, said trap being inclined outwardly and downwardly, substantially as described.

7. A miners gold pan provided with a raised double curved rib from the bottom of the pan extending transversely of the, pan

and separating the same into two oppositely disposed chambers, with a sunken trap provided in one of said chambers at the junction of the bottom and the side wall of the pan, substantially as described.

8. A miners gold pan provided with a rib extending transversely of the pan and separating the same into two oppositely disposed chambers, with a sunken trap provided in one of said chambers at the junction of 10 the bottom and the side wall of the pan, and

said trap being inclined outwardly and downwardly, substantially as described.

EDWVABD O. C. 0RD.

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