US1679064A - Sampling apparatus - Google Patents

Description

July 31, 1928.' 1,679,064

- 5. E. STEPHENSON SAMPLING APPARATUS Filed March 26, 1927 2 Sheets-Sheet 1 l a J/ FIG!- l I lllll lll INVENTOR.

W ATTORNEY.

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July 31, 1928.

S. E. STEPHENSON SAMPLING APPARATUS Filed March Hm m rm UINVENTOR. ,S. E. Shep/ransom ATTORNEY.

UNITED STATES FICE. I

SAMUEL E, STEPHENSON, 0F ATLANTA, GEORGIA.

SAMPLING AIPABATUS.

Application filed March 26, 1927. Serial m. 178,802.

. The invention relates to a sampling appara-tus or machine and more especially to the class of automatic sampling 'machmes for use in conjunction with elevator heads, con- 'veyor openings, slides, or any place where materials are delivered.

The primary object of the invention is the provisionof a machine of this character, wherein materials in predetermined amounts can :be extracted from a chute or other delivery medium, for the sampling of such material, this being requiredin connection with apparatus for the milling or treating of flour, the machine beingcapable of use with equal]. facility in connection witht'he manufacture or treatment of other materials,

wherein it is necessary or desirable that samples of material be periodically extracted for the purpose of inspection.

Another object of the invention is the provision .of a machine of this character, wherein the construction thereof is novel in form and will automatically extract material in predetermined quantity and at determined intervals, without regard to weight or bulk.

A further object of the invention is the provision of .a machine of this character, which is comparatively simple in construction, thoroughly reliable and efiicient in its purpose, strong, durable, automatic in action and inexpensive tomanufacture and install.

With these and other objects in view, the invention consists in the features'of construction, combination and arrangement of parts, as will be hereinafter-more fully-dcscribed, in detail, illustrated in the accompanying drawing, showing the preferred embodiments of the invention and pointed out in the claims hereuntofa'ppended. In the accompanying drawing.:'

Figure 1 is a top plan view of thesam pling machine constructed in accordance with the inventionfportions being broken away to show details. 5

Figure 2 is a sectional view on the line 2-2 of Figure 1 looking in the direction of the arrow. 1 I Figure 3 is a side elevation of the-machine, showing the chutefor the material in vertical section. V I

Figure 4 is a fragmentary detailed view.

, showing the sampling bucket in delivery position.

Figure 5 is a fr r on the line a of were 1.

agmentary sectional view- Similar reference characters indicate 'corresponding parts throughout the several views in the drawing.

Referring to the drawing in detail, the sampling machine, comprises a bed or frame 10 having the major portion thereof of substantially'rectangular form provided with an open center 11, while the remaining portion extends from one end of said rectangular shaped portion and is curved laterally to provide an arm or crane12. vl0 including the arm or crane 12 is preferably made from metal cast or otherwise formedand has provided marginally thereof an upstanding reinforcing rib or bead 13, the bed or frame 10 being designed to be ,mounted in any suitable manner upon a foundation or support.

Formed on the siderails of the frame 10 are spaced pairs of journal bearings 14 and 15, respectively, and mounted in the bearings 14: is a shaft 16 which projects beyond the frame 10 at one side thereof and has keyed or otherwise made fast to this projecting end a belt pulley 17 constituting the power pulley for the machine. Mounted in the bearing 15 is a driven shaft .18, while arranged within the open center 11 of the frame 10 are gear wheels 19 and 20, and pinthe perimeter of said'gear wheel 20. This The frame gear wheel 20 is at all times in mesh with a pinion. 24 in alignment'therewith and formed on the hub of the gear wheel 19 next to'the pinion 21, the details of which will be apparent from Figure 1 of the drawing. v It will be apparent that motion is trans-. mitted from pulley317 through its shaft 16 tothe pinion 22, gear 19, pinion 24, gear 20,

pinion21 from the sector'23, so that the shaft 18 will be intermittently rotated, while the shaft16 is constantly rotated for a-purpose presently described. y r

The shaft 18 extends beyond theframe 10 an that side remote from the de from which end of the shaft 18 is fixed a disc having formed therein a row of spaced holcs 26,

in their location gradually increasing in .dis-

tance from the axis or center of the disc 25 and in any one of 'thesame is adapted to be detachably engaged a wrist pin 27 with which is pivotally connected a throw arm 28 or what is more properly termed a pitman, the latter having cross head connection at 29 with a reciprocating plunger or rod 30 slidably fitted in a guide bearing 31 formed at the free end of the crane or arm On the outer end of the plunger or rod 30 IS a bail 32 in WlllCh 1s eccentrically pivoted a sampling bucket having an open top and inner end, from the latter of which projects an eXtenuat-ed lip 34 and this bucket 33 is adapted to be reciprocated through a suitinwardly of the chute it is automatically raised to receiving positlon for=accumulatmg sampling machine.

able opening 35 therefor formed in the vertical wall of a materialchute 36, so that material gravltating within the chute 36 can be caught in the bucket 33, that to say a given quantity of suchmaterial cor responding to the capacity of the bucket 33. Adjustably mounted upon the bearing 31 is a substantially L-shaped gage arm 37,

which regulates the tripping action of the bucket 33 accordingly to the adjustment of said arm 37 relative to the bearing 31.

The arm 37 has formed therein a series'of spaced holes 38 in any pair of which are "I engaged bolts 39 which are screwed into the bearing 31 and in this manner the gage arm 37 1s ad ustably secured to the bearing for regulating the dumping or tripping action of the bucket 33 under intermittent movement thereof in the operation of the It will be apparent that by adjustment of the gage arm 37 and also the pitman 28' the throw of the plunger or rod 30 can be increased or'decreased and the periodical dumping of the-bucket 33 can be altered at the fancy of the user of the machine.

In the operation of the machine the sampling bucket 33 is periodically moved inwardly and outwardly through theopening 35 in the chute 36 by means of the plunger or rod 30 and the driven mechanism of the machine. ll hen the" bucket 33 is moved material delivered into the chute 36. On 7 the outward movementof the "bucketa33 from withinthe chute'36 it slides overnthe gage arm 37 and afterreaching a predetermined point Wlll automatically dump or drop to discharging POSllZlOIL as'shown in Figure 4 of the drawing, thereby delivering the sample of mat-erial to a pointof de- "posit as will be clearly apparent. In the working of the machine the extraction of sampling material will be periodically con tinuous and effected in an automatic man ner. these from the innermost to the outermost passed the latter, and under such conditions sector 23 will properly meshwith pinion 21. The sector 23 is of the necessary length to provide, when meshing with pinion 21 a full forward and rear stroke for the arm 28 so the bucket will have the desired extent of shift thereby when moving in and out.

While there has been described in the foregoing what is considered to be the preferred embodiment of the invention, it is to be understood that various changes in the proportion andarrangement of parts may be resorted to within the scope and spirit of the appended claims. It is also thought that the construction and manner of operation of the device will be clearly understood and therefore a more extended explanation has been omitted.

What is claimed is 1.111 a machine of the character described, a bed having a lateral offset guide having a curved laterally extending arm,

spaced shafts arranged transversely of the open frame, a combined, gear and pinion loosely mounted on one of said shafts, a pinion fixedto such shaft and opposing said loosely mounted pinion, a pinion fixed to the other of said shafts and meshin with said loosely mounted gear, a gear loosely mounted .on said other shaft, meshing with said loosely mounted pinion and pro- :vided with a'sectonintermittently meshing simultaneously withsaid opposed pinions, a disc: on that shaft carrying the loosely mounted pinion, a pitmanadjustably connected eccentrica'lly'to; the disc, a bearing formed ,on the free end of thearm, a plunger reciprocatingly movable in the bearingand pivotally connected toithepitman, a bail at the free end of the plunger, a dumping bucket eccentrically pivoted in the bail, and

ineans carried by the arm and controlling? j the period of dumping of said bucket when.

actuated by the plunger.

'3. In a machine of the character described, a bed forming. an open; frame and having a curved laterally extending arm,

spaced shafts arranged transversely of the open frame, a combined gear and pinion loosely mounted on one of said shafts, a pinion fixed to such shaft and opposing said loosely mounted pinion, a pinion fixed to the other of said shafts and meshing with said loosely mounted gear, a gear loosely mount ed on said other shaft, meshing 'with said loosely mounted pinion and provided with a sector intermittently meshing simultaneously with said opposed pinions, a disc on that shaft carrying the loosely mounted pinion, a disc on the journal carrying the fixed pinion, a pitman adjustably connected eccentrically to the disc, a bearing formed on the free end of the arm, a plunger reciprocatingly movable in the bearing and pivotally connected to the pitman, a bail at the free end of the plunger, a dumping bucket eccentrically pivoted in the bail, means carried by the arm and controlling the period of dumping of said bucket when actuated by the plunger,

and means for adjusting the last namedmeans to vary the dumping period of said bucket.

. 4. In a machine of the character described, a bed forming an open frame and having a curved laterally extending arm, spaced shafts arranged transversely of the open frame, a combined gear and. pinion loosely mounted on one of said shafts, a pinion fixed to such shaft and opposing said loosely mounted pinion, a pinion fixed to the other of said shafts and meshing with said loosely mounted gear, a gear loosely mounted on said other shaft, meshing with said loosely mounted pinion and provided with a sector intermittently meshing simultaneously with said opposed pinions, a disc on that shaft carrying the loosely mounted pinion, a disc on the journal trolling the period of dumping of said bucket when actuated by the plunger, means for adjusting the last named means to vary the dumping period of said bucket, and a power pulley having connection with one of the journals for imparting motion to the gears and pinions.

In testimony whereof, I aflix my signature hereto.

SAMUEL E. STEPHENSON.

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