US1769462A - Method of and mechanism for sampling materials - Google Patents

Description

July 1, 1930. c. F. RHODES IETHOD OF AND MECHANISM FOR SAMPLING MATERIALS Filed Aug. 2. 1929 2 Shoots-Sheet 1 INVENTOR- C? 5y MM,

AITORNEYI.

July 1, 1930. c. F. RHODES 1,769,462

METHOD OF AND MECHANISM FOR SAMPLING MATERIALS Filed Aug. 2, 1929 Z-Shucs-Sheet 2 L N 4770mm:

Patented m, 1, 1930 UNITED STATES PATENT OFFICE CHARLES I. RHODES, 01' GLENS FALLS, NEW YORK, ASSIGNOB TO INTERNATIONAL PAIEB COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK METHOD 0] AND MECHANISM FOR SAMPLING MATERIALS Application filed August 2, 1989. Serial No. 888,076.

This invention relates to what are lmown as automatic samplers for taking at periodic intervals, uniform quantities or samples of substances or materials, which samples on 5 being mixed together will give an average of the quality and condition of the material as it existed during the sampling period.

The invention has reference more particularly to an automatic sampler for use in con- 10 nection with liquids containing matter in suspension, such for instance as the so-called white water which flows from paper making machines usually through a weir or conduit, and which holds in suspension such constituents as clay, pulp fiber, etc., it being very desirable for the proper and economic operation of the paper making machine, that the attendant be kept informed as to the nature and amount of the constituents that are passing away from the machine in the white water, to the end that the proper steps may be taken in the preparation and handling of the stock, and in the adjustment and operation of the machine, to prevent undue waste.

In an application for Letters Patent of the United States filed by me on August 10th, 1928, Serial No. 298,823, a sampling mechanism for this purpose is disclosed, 111 which a sampling dipper is moved by a power operated driving member at periodic intervals and at relatively slow speed through the material to be sampled, and is then raised to elevate these samples and discharge the same into a suitable receptacle, wherein they are mixed together to be later anal zed.

In the use of such apparatus or sampling liquids containing solid matter in suspension, such as the white water flowing from paper making machines, it has been found that the passage of the sampling dipper p through the white water at slow speed, such as would result from the type of mechanism disclosed in said application, would give an opportunity for the fibers and other solid substances to settle in the dipper to an undue extent, with the result that the sam ples taken would contain a greater proportion of solid matter than would be contained in the body of white water being sampled,

and the mixed samples would not re resent as true and accurate an average of t e suspended matters as would be desirable.

The present invention is an improvement on that of said application, and is designed to obtain a more representative and accurate sample of the liquid material with respect to t e proportions of solid constituents contained therein, and the invention consists of an improved apparatus and method of o eration, characterized b the passage "f the sampling dipper at suc speed through the liquid being sampled, that there will be no opportunity for the solid matters held in suspension in the li uid to accumulate in the dipper to an un ue extent, so that the individual samples taken under this condition will represent more accurately and truly the proportions of solid constituents contained in the liquid at the time the samples 7 are taken.

In the specification to follow, the improved mechanism and method of operation will be described in detail, and the novel features thereof will be pointed out in the appende 15 claims.

In the accompanying drawings:

Fig. 1 is a plan view of the improved apparatus;

Fig. 2 is a side elevation of the same, with certain parts broken away;

Fi 3 is an end elevation looking from the right of Fi s. 1 and 2; and

Fig. 4 is a ragmentary view on an enlarged scale in side elevation, showing the form of the mutilated gear and the pinion driven thereby.

Referrin to the drawings:

The mac ine comprises as its main elements, adriving member 1, ada ted in the resent instance to be operated y the flow of the liquid material to be sampled, such for instance as the white water from a paper making machine; a sampling member ordipper 2 movable down into the flowing water to take a sample thereof, and then upwardly to elevate the sam 1e, so that the successive samples may be nuxed together; and suitable ower transmitting connections 3 between t e driving member and dipper to set in position over the conduit throu h which the white water flows from t e aper making machine, the water wheel w ll be immersed at its lower side a sufiicient depth in the flowing water to be rotated thereby.

Near one end the driving shaft fixed to it a bevel inion .9 meshing w1t h .a bevel gear on t e end of a longitudr nally extending power transmitting shaft 11, which shaft is operatively' connected at its opposite end to the digger 2 1n the manner presently to be descr1 d, to operate the same.

The shaft 11 is journalled adjacent the bevel pinion in a bearing 12 mounted to rock on a transverse ivot bolt 13 supported 1n a bracket late ed to the side 0 the lontudinal ame-bar, from which point the aft extends at an upward inclination and is journalled at its opposite end in a s im1lar bearin 14, mounted to rock on a horizontal pivot olt 15 on the upgler end of a standard 16 extendin .upwar y from sald longrtudinal frame ar. The shaft extends a short distance beyond the bearing 14, and has fixed to its end a worm 17 engaglng a worm wheel 18 on a driven shaft 19 journalled at its ends in outer and inner standards 20 and 21 sustained by said longitudlnal frame bar. 7

Carried by the shaft 19 at the inner side of the worm wheel, is a mutilated gear 22 provided with a short section of gear teeth 22', adapted in the rotation of the gear to mesh with a small pinion 23 on the outer end of a eountershaft 24, journalled at its ends in hearings in the upper end of the fi standard 21 and the upper end of a standard 25 risin from the longitudinal frame bar at that side of the machine. The teeth of the small pinion extend only partially around the same, thereby leaving a smooth portion 23" which is formed on a concave curve correspondin to the curvature of the toothless periphera edge 22" of the mutilated Pinion whereby the pinion 23 will be held r0 rotation when disengaged from the teeth of the mutilated gear, the purpose of which will presently appear.

From the construction descnbed, it will be understood that in each cycle of operation of the mutilated gear, the gear teeth;

menace thereon will successively engage and disengage the small'pinion 23, the length of the section of gear teeth being such in relation to the diameter of the pinion 23, that the latter will be caused to make one complete rotation in each rotation of the mutilated gear, but at relatively greater speed than that of the gear, and-at intermittent intervals in the successive rotations of the gear between which intervals the pinion 23 will be held at rest.

The countershaft 24 has fixed to it a collar 26 provided with a hole in which extends a rod 27 held fixedl in. place in the collar by aset pin 28, w ich rod extends at right angles-to the "shaft and constitutes a carrier for the dipper -2 before referred to, and which carrier 1n the rotation of the countershaft will be revolved in a vertical plane about the axis of said shaft.

The dipper is in the present instance in the form of a cup, provided near its open end and at diametrically opposite points, with alined bearing holes which loosel receive a lateral 'ournal arm 29 on the end of the rod 27, w ereby the cup is supported by the carrier so that it may rock relatively thereto about an axis parallel to the countershaft, collars 30 being fixed to the journal arm on opposite sides of the cup to confine the same thereon. In the revolution of the cup by the rotation of the countershaft, it will by gravity assume an upright receiving position, as shownin Fig. 2, and when revolved in the direction of the arrow in said figure, the cup will be carried downwardly and will be immersed in the stream 0 white water flowing through the conduit beneath, and becoming filled with the white water?, the cup will be elevated by the continued movement of, the carrier.

Means are matic discharge of the contents of the cup when elevate so that the successive samples of water taken from the stream in the successive cycles of operation of the on may be mixed together. To accomplish t 's object, the cup has fixed to it on one side a nger 31 in position to enga e a fixed stop arm 32 projecting laterally rom a rod 33 extending upwardly from the side bar of the frame at that side of the machine, the said stop arm being arranged in the path of movement of the finger as the cup is carried upwardly and reaches the highest point of its travel. When the finger engages the stop arm, the continued movement of the cup by its carrier will cause the cup to rock on its journal on the carrier to discharging position, as shown by dotted lines in Fig. 2, whereby the contents of the cup will be discharged into .a trough 34 on the frame, leading to a suitable rece tacle or pail 35 at the side of the frame. the

provided for causing the autocup continues on its way, the finger will be disengaged from the stoparm, whereupon the cup will riglht itself by avity ready to receive anot or charge 0 water as it is again lowered to the flowing water. The form and arrangement of the gearing by which the cup is caused to thus pass through the water is such that the passage of the cup will be at relatively high speed, and with aflow of water of approximately 104 feet per minute, which is a air average of the flow from a pa r making machine, the mutilated gear w1ll make a complete revolution in about 8 minutes while the complete revolution of the cup about the axis of the countershaft will consume about 36 seconds, and its submer ed passage throu%l1 1the water will occupy a ut 6 seconds. en

' passing through the water at this speed, it

as been found that there will be little or no opportunity for the settling in the cup of the fiber or materials held in sus ension in the flowing water, hence the samp e taken at any one time will be representative with respect to the proportion of solid matters in the body of water at the time the sample is taken. In this way the mixed samples will present a true and accurate average of the condition of the white water flowing by during the sampliriig period.

On reference to ig. 2, it will be seen that the cup is at the beginning of its cycle of operation, the section of ear teeth on the mutilated gear being rea y to engage the small pinion 23. As the mutilated gear be- 'ns its rotation in the direction of the otted arrow, the advancing end of the section of gear teeth will engage the pinion, and as the mutilated gear continues its movement, the section of gear teeth will advance in mesh with the pinion and will cause the complete rotation of the same, and consequently the countershaft and cup earned thereby, with the result that the cup W111 be immersed in the stream of water beneath and take a sample thereof, will elevate the sample, and will discharge the same into the chute, and by the time the gear teeth dlsengage the pinion, the cup will have returned to its former starting position where it will be held by the engagement of the smooth ortion 23 of the inion 23 with the tootliless peripheral e ge 22 of the mutilated gear, until again engaged by the section of gear teeth 22. In this action the cup will be drawn through the water at relatively high speed in relation to the speed of rotation of the mutilated gear, and will be immersed therein for a period of about six seconds, as heretofore explained,

the immersion at such limited period of time preventing the undue settling or accumulation therein of the matters held in suspension in the water.

While the invention has been described with particular reference to its employment in taking samples of the white water flowing from aper making machines, containmg as 1t oes solid matters held in suspension, it is not intended that the invention be limited to such use, as it is applicable as well for taking samples of other hquids con taining solid material held in ension, for instance screen rejections, an the invention is applicable also for taking samples of other liquids holding solid matter in suspension.

will be taken in frequency, dependent upon the rate of said flow. But good results can be obtained by operating the driving member by means independent of the liquid to be sampled, in which case the water wheel may be supported free of said material and may be operated by a water jet impin ing upon the wheel, or by other indepen ent operatingmeans.

Claim is laid in the present application both as to the method and apparatus involved, broadly for the movement of the sampling dipper through the liquid to be sampled at such speed as to prevent the undue settling of the suspended matter, and the claims therefore express the broad invention, which is claimed in more specific terms and on the basis of a specifically different mechanism, in my copending application Serial No. 381,418, filed July 27th, 1929.

In the foregoing description and accompanying drawings, the invention has been set forth in the particular detailed form and arrangement of parts, which in practice have been found to answerto a satisfactory degree the ends to be attained. It will be understood however, that these details may be variously changed and modified by the skilled mechanic without departing from the limits of the invention, and further it will be understood that the invention is not limited to any particular form or construction of parts, except in so far as such limitations are specified in the claims.

Having thus described my invention, what I claim is 1. In the'method of sampling liquids containing matter in suspension, passing a sampling dipper through said liquid at intervals, and at such speed as to prevent the vundue settling of the suspended matter in the dipper, so as thereby to take successive samples of 1 the liquid, and mixing said samples together to give an average of the suspended matter during' the sampling period.

2. The method of taking samples from a flowing stream containing matter in suspenl in t e stream, so as'thereby to take succession, which consists in passing a sampling 'dipper at intervals through said stream in the direction of flow thereof, and at such eed as to prevent the undue settlingin the d ip erof t e suspended matter contained sive samples of the liquid, and mixing said samples togetherto give an average of the suspended matter during the sampling period. q

3. The method of taking samples from a flowing stream containing matter in sus ension, which consists in passing a sam ing dipper through said stream at periodlc inu tervals which vary directly as the rate of flow of the stream varies, so as thereby to take successive samples of the liquid, the movement of thedipper through the flowing stream being at sue speed as to preventthe go undue settling in the ipper of the matters held in suspension in the stream, and mixin said samples together to give an average the suspended matter during the sampling period. 18

matter in suspension, the combination of a drivin member, a sampling dipper movable throug the liquid material to take samples thereof, and connecting gearing between the to driving member and dip er to cause the movement of the dipper t rough the material at such speed as to prevent undue set- 4. In a sampler for flowing liquids holding- 9. In a sampler for materials, the combination of a rotatable driving member, a

power transmittin shaft geared thereto, a

worm on said sha a worm wheel engaged by said worm, a mutilated gear 0 ratively connected-with the worm wheel to rotated thereby, a pinion rotated at intervals by said mutilated gear, and a sampling dipper operatively connected with sa1d pinion to be revolved intermittently thereby.

10. In a sampler for materials, the combination of a supporting frame, a rotary dr v ng member journalledtherein, a transm1tt1ng shaft geared to said driving member, a worm on said shaft, a driven shaft mounted in the frame, a worm wheel on said driven shaft in mesh with the worm, a mutilated ar rotatable with the worm, a shaft ourna led in the frame parallel with the driven shaft, a pinion thereon rotated intermlttently by the mutilated gear, and a sampling dipper connected with the last mentioned shaft to be revolved thereby intermittently between periods of rest.

In testimony whereof, this specification has been duly silgned b C ARLI S F. RHODES.

tling in the dipper of matters held in suspension in the flowing liquid.

88 5. In a sampler for flowing li uids holding matter in suspension, the com ination of a rotary driving member operated by the flow of said liquid, a sampling dipper operated by'the driving member to move through a) the liquid to take successive samples thereof, andconnecting gearing between the driving member and d1 per to move the dipper through the flowing liquid at such speed as to prevent the undue settling in the dipper 48 of the matters held in suspension in the liquid.

6. In a sampler for materials, the combi-' nation of a driving member, a sampling dip per, and gearing connectin the two, sa1d I0 gearing being of a form an construction to cause the dipper to be moved through the material intermittently between periods of rest.

7. In a sampler for materials, the combination of a rotatable drivin member, a rotatable driven member, an a samplmg dipper cared to the driven member to be revolve thereby intermittently between periods of rest.

8. In a sampler for materials, the combination of a rotatable driving member, a mutilated gear rotated thereby, a pinion rotated intermittently by said mutilated gear, and a sampling dipper revolved intermittently by said pinion.

Images