US1174657A - Sifting testing-machine. - Google Patents

Description

W. J. BELL. SIFTING TESTING MACHINE. APPLICATION, FILED JUNE 15. I915- Patented Mar. 7, 1916.

3 SHEETSSHEET 1.

W. J. BELL. SIFTING TESTING MACHINE.

APPLICATION FILED JUNE 15. I915. 1 174 657. Patented Mar. 7, 1916.

3 SHEETS-SHEET 2.

THE COLUMBIA PLANOGRAFH cu, WASHINGTON, D c.

'W. J. BELL. SIFTING TESTING MACHINE. APPLICATION FILED JUNE I5, 1915.

1 1 74,657. Patented Mar. 7, 1916.

3 SHEETS-SHEET 3.

THE COLUMBIA PLANOGRAPH co, WASHINGTON, D. c.

WILLARD J. BELL. OF NEWAYGO, MICHIGAN.

SIFTING TESTING-MACHINE.

Specification of Letters Patent.

Patented Mar. 7, 1916.

Application filed June 15, 1915. Serial No. 34,159

To all who m it may concern:

Be it known that I, WILLARD J. BELL, a citizen of the United States, residing at Newaygo, in the county of Newaygo and State of Michigan, have invented or discovered certain new and useful Improvements in Sifting Testing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain improvements in the sifting testing machine shown and described in my Patent No. 1,120,012, granted December 8, 191 1, and the present invention has for its object to render the machine of my said patent more convenient and effective in use, as will hereinafter more fully appear.

In the accompanying drawings Figure 1 is a front View of the improved sifting testing machine. Fig. 2 is a plan view thereof, and Fig. 3 is a side view looking to the right of Figs. 1 and 2.

Referring to the drawings, the base of the machine consists of a portion made in the form of a closed box 12 adapted to be filled with oil to a point high enough to insure perfect lubrication of all of the working parts contained therein, said box being provided with supporting legs 13 and with a projecting table portion 1a. Mounted in said base is a driving shaft 15 which may be operated from any suitable source of power, as a motor 16 mounted on said table portion 1a and having a clutch connection with said driving shaft, or the said driving shaft may be operated from an independent source of power belted to apulley on the shaft 15. The said shaft 15 is provided with a pinion 18 meshing with a gear wheel 19 on a shaft 20 journaled in the box portion 12 of the base and connected by bevel gears 21 with two vertical shafts 22 supported by the standards 23 and carrying eccentrics 24: for operating the lower and upper shaking plates 25 and 26. This mechanism by which the shaking plates are operated is essentially the same as in the machine of my said Patent No. 1,120,012, hereinbefore referred to.

Mounted in the shaking plates 25 and 26 are two upright rods 27, and adjustably attached to the said upright rods, by means of clamping screws 28, is a carrying bar 29 on which are mounted the springs 30 which, collectively, afford a yielding support for the series of superposed testing sieves 31 The screws 28 pass through split portions of said bar 29. It will be understood that by ralsing Or lowering the carrying bar or plate 29 on the rods 27 the height of the series of sieves, or the number of sieves to be used, may be varied, as is frequently desirable in making tests of different kinds of pulverized materials.

In order to provide for a convenient introduction or removal of a series of superposed sieves without passing them down or lifting them up through the top shaking plate 26, the said shaking plate, in the form of the invention herein shown, is provided with ahinged section 26 hung on hinges 32 and thus adapted, when the top plate 33, which rests on the sieves is removed, to be tipped up backward so that a series of sieves may be conveniently introduced to or removed from the front of the machine. The upper shaking plate 26 is provided with lugs 3f overhanging the top plate 33 and serving to retain the sieves in place during the shaking operation, in that the sieves will be pressed upward by the springs 30 so that the top plate will be held in contact with said lugs. This construction is simpler and more desirable than the U-shaped holding strap employed in the construction shown in the patent hereinbefore referred to.

Journaled in the base of the machine is a hammer-operating shaft 35 having a chain and sprocket gear connection with the shaft 20, as in the machine of my said. patent, the said shaft being provided with a jog cam 36 on which rests a foot piece 37 at the base of a lifting rod 38 which impinges at its upper end against a hammer bar 39 carrying a hammer 10 adapted to strike against an impact block 41 mounted on the top plate 83, to percussively jar the series of sieves, when said hammer is in operation. The hammer bar 39 is pivotally mounted at the top of a standard. 42. This percussive agitating mechanism is similar to that of my patent hereinbefore referred to, but in the present instance only a single hammer is employed.

From the foregoing it will be understood that the present invention provides convenient means whereby a series of testing sieves may be conveniently placed in or removed from their working position in the machine, and also provides means whereby the num ber of testing sieves may be varied, as may be desired. The vertical or upright rods 27 serve to rigidly connect the shaking plates and 26 and thus a stifi shaking well adapted to receive the percussive of the hammer 40, is provided.

aving thus described my invention I claim and desire to secure by Letters Patent:

1. In a sifting testing machine, a top shaking plate provided with a hinged front part which may be lifted for the convenient introduction or removal of a series of testing sieves.

2. In a sifting testing machine, the com bination with means for agitating a superposed series of sieves, of a vertically adjustable bottom spring support for said sieves, so that the height of a column ofsieves or the number of the same may be varied, when desired, by raising or lowering said support, and stops at the top of the column of sieves and toward which the latter are urged by said spring support.

3. n a sifting testing machine, the combination with upper and lower shaking plates and means for operating same, of vertical rods mounted in and connecting said shaking plates, a carrying bar or plate for supporting a series of testing sieves, said frame,

action carrying bar or plate being adjustably attached to said vertical rods.

4. In a sifting testing machine, the combination with lower and upper shaking plates and means for operating same, of a top plate to rest on a series of sieves, the said upper shaking plate being provided with lugs overhanging said top plate, a spring support for a series of sieves and by which the latter may be forced upward so as to hold the same in proper working position by the cooperation of said top plate and lugs.

5. In a sifting testing machine, the combination with upper and lower shaking plates and means for operating same, of vertical rods mounted in and connecting said shaking plates, a carrying bar or plate for supporting a series of testing sieves, said carrying bar or plate being adjustably attached to said vertical rods and being provided with springs affording a yielding sup port for the column of sieves.

In testimony whereof I afliX my in presence of two Witnesses.

WILLARD J. BELL.

signature,

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

Washington. D. C.

Images