ae eee JUNE 1, 1921 nm pas | ard Ps ns) =e! ra Fon z= a cy om om = = ae Ga at ae Ba Cc ra = ae Peay | Foot ee oe cy a TY - @ Ze one TESTS OF MOTORS IN GRAIN ELEVATORS AND FEED MILLS A Thesis Submitted to The Faculty of The Michigan Agricultural College By R.A. Backus RM. Maitland Candidates for the Degree of Bachelor of Science. June 1, 1921. INTRODUCTION. This thesis is for the purpose of determining the smount of power required to drive the various types of feed-mill andi elevator machinery. Little attention has been paid to motors used for this purpose, Such motors while small in size are often large in importance, for each one constitutes a fire hazard. Elevators md feed.mills are necessarily very dusty, ami a spark or an overheated motor may cause an explosion or a fire. For this reason it is essential that no motor should be overloaded enough to cause it to overheat. Tests were made under actual running conditims, but in some cases it was impossible to obtain very accurate or satisfactory results, due to the fact that certain machines are usually run in connection with other equipment, such as short elevators, line shafts, etc. However, we trust that our efforts will prove of some value in determining the power required to drive various elevator and feed- mill machines, 93816 l. SAGINAW MILLING COMPANY, SANDUSKY, MICH. On April 14, 1921 the electric motors in the “Greeley” and “Bickle” elevators of the Saginaw Milling Company at Sandusky, Michigan were tested by R.A. Backus and R. M,. Maitland for the purpose of determining why the specified fuees were not sufficient to carry the load. Found that several of the motors were heavily overloaded. Conditios were investigated at the Gleaner's Elevator, a printing shop, and two meat markets, which comprise the total power load of the village. The lighting load is very email during the day. At the Gleaner’s Elevator fuses were replaced with fuse. wire or copper wire thruout, except at relays on 10 H.P. motor circuit. The motors in the printing shop and the two meat. markets, which are all 5 H.P., were started with single throw triple pole switches, end fused with 60 emp. fuses, except where copper wire was used. The Power Plant, which 18 owned by the Village, is located about 100 feet from the Bickle Elevator, and is equipped with two generators of SO Kw. and 85 Kw. capacity. Character of service: 440 volt, 60 cycles, 3 phase, The following tabulated data shows the results of the tests. GREELEY ELEVATOR. MOTOR #1. 2 H.P. Robbins and Myers 1150 r.p.m., 32 amps. 3.2 @:5) | Driving one elevator leg empty, 45'- 5 x 9" cups. Volts Av. amps. Start. amps. Watts H.P. P.F. 472 2.5 15.5 1250 1.66 612 Remarks: The high starting current was instantaneous only. MOTOR #2, 7.5 H.P.Robbins and Myers Type K 1150 r.p.m., 10 amps. Driving one short elevator leg empty, and idler pulley on one #7 Monitor wheat cleaner. Volts Av. amps. Start. amps. Watts H.P. P.F. 464 10.4 26.5 2400 5.16 -285 Running the elevator and wheat cleaner loaded. Volts Av. amps. Start. amps. Watts H.P. P.F. 464 11.75 5100 6.8 - 54 MOTOR #5. 7.5 H.P.Robbins and Myers type K 1150 r.p.m., 10 amps. Driving one short elevator leg and #5 Monitor Grain Separator empty. Volts Av. Samp 8 « Start. amps. Watts HP. P.F. 458 9.0 24.25 3800 5.06 ° 534 Remarks: | We were unable to run this machinery loaded, MOTOR #4. 1 H.P.Robbins and Myers type K 1150 r.p.m., 1.6 amps, Driving one short elevatar leg empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 476 2.5 7.5 550 73 267 Remarks: This motor would undoubtedly be overloaded when elevating grain. MOTOR #5. 20 H.P. General Electric Type KT 1750 r.p.m., 24.5 amps. Driving a Dreadnaught 20" Feed grinder empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 442 725 $030 4.04 0525 Running the above machine while grinding oats. Volts Av. amps. Start. amps. Watts H.P. PF. 438 135.21 9200 12.22 .92 Remarks: This motor, together with the following 1 H.P. motor is on a separate circuit. The exact starting current could not be determined as it was above 50 amperes and meters used were not of sufficient capacity. MOTOR #6. 1 H.P. Fort Wayne Type MA, 1.75 amps. per phase, 1800 R.P.M. Driving two short elevator legs end a shaker loaded with oats. Volts Av. amps. Start. amps. Watts H.P. P.F. 442 1.0 6.0 487 647 683 BICKLE ELEVATOR. MOTOR #1. 5 HP. Robbins and Meyers Type K, 4.2 amps. per phase, 1150 R.P.M. Driving two short elevators and #10 Clipper Seed Cleaner empty. Volts Av. emps. Start. amps. Watts H.P. 478 2.5 21.75 1350 1.79 P.F. 2510 Driving the above elevators and cleaner and idler pulley on Invincible bean picker. Volts 478 Watts 1400 H.P. 1.86 Av. amps. Start. amps. 4.0 Driving elevators, seed cleaner, and bean picker empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 478 4.5 22.0 1650 2.19 444 MOTOR #2. 7.5 H.P. Robbins and Meyers Type K, 10 anps. per phase, 1150 R.P.M. Driving fan on bean drier. Volts Av. amps, Start. amps. Watts H.P. P.F, 448 15.0 21.5 7180 #&§ 9.6 07335 Driving idler pulley on fan. Volts Av. amps. Start. amps, Watts H.P. P.F. 452 9.0 2575 5.47 0565 Remarks; - P.F. 0424 all It is quite evident that this motor is overloaied while running fan. MOTR #3. 2 H.P. Robbins and Meyers, Type K, 1150 R.P.M. See amps. per phase, Driving one elevator leg empty, 55' ~ 7 x 4%" cups. Volts Av. amps. Watts 466 2.7 Start. amps. H.P. 13.75 1200 1.6 P.F. «550 4. Remarks: This motor is undoubtedly overloaded while elevating grain. MOTOR #4. 2 H.P.Robbins and Meyers, Type K, 1150 R.P.M. 3.2 amps. per phase, Driving one elevator leg empty, 55' - 44 x 7". Volts Av. amps. Start. ams. Watts H.P. P.F. 472 2.5 14.75 600 1.06 eo DO8 Driving the above elevator loaded with beans. Volts Av. amps. Start. amps. Watts H.P. PF. 472 5.0 3000 4.0 o735 Remarks ; This moter is heavily overloaded when elevating beans. This motor blew 6 amp. starting fuses, but started on 10 amp. fuses. MOTOR # 5. 10 H.P.Robbins and Meyers, Type K, 1150 R.P.M. 14 amps, per phase. | Driving three short elevator legs empty, and idler pulley on #6 Monitor bean separator. Volts Av. amps. Start. Amps. Watts H.P. P.F. 456 11.75 40.75 35100 4.12 .335 Driving above elevators and #6 Monitor bean separator all empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 452 17.0 103500 15.7 e763 64 SUMMARY. Tests show that several of the motors are heavily over- loaded. They also show that several of these motors draw a. very high starting current, dw, no doubt, to the inertia of the machines which they start. Numerous readings of the volt. age were taken and found to be 480 when no machines were run- ning. There was a considerable drop when the various motors were started, but at no time did it drop more than 2 volts below normal, which is 440, This would show that the diffi- culty is not due to low voltage, but to overload. Qn the 7.5 H.P. motor driving the coal cmveyor there was no protection except the 150 amp. fuses at the entrance and located in the Bickle elevator. Several of the low-voltage releases were repaired as they were not in working order. The following data gives the fuse sizes being used on the motors at the present time, GREELEY ELEVATOR. Motor size Starting Puse Running Fuse 7.5 H.P. Fuse Wire 5O amp. 2 Fuse Wire 60 amp. 1 Fuse Wire 15 emp, 7.5 SO amp. SO amp. 20 60 amp. 30 amp. Relays 1 5 amp. 1O amp. BICKLE ELEVATOR. Motor Size Starting Fuse. Running Fuse 10 H.P. 30° amp. 25 amp. 125 25 amp. 30 amp. 2 25 amp. 10 amp. 2 Fuse Wire 10 amp. 3 Copper Wire 15 amp. 105 No Fuses except the 150 amp. entrance fuses. FrOM SICKLE ELEY. Sal NO. 8B WIRE ‘Nw 1” CoN D. Pe he FUSE oe a CABINET antares 6O4AIP | SW/7CH « 3 5 >. =" i. = is Le a aaa 2 Ye eae a i =n 4g" COND. ™ IN £"CONO. > ZSCALIP 25 AMP 6 AIP Pawar | FUSE FUSE FADES ee ee RE cc ore ee ers pin one gon ae TAL at ee —-—<—“4 4 ieee —— i ow oy, a (S AMP 45 ANMVP oy Tag) 2 AIP he oe See | i ee FUSE FUSE OER IE eS IE SR FR ET eo Ev ade we oa . % (2 HF 72 4P SWITCH SWITCH 440 V. 4g0V. [I COMP. COMP. Fy 2 Vane aaa ead er ARE MOTOR MoTorR SECRETED. CUTE a eR | a CRT = OP, ee RE OO LS i Oop AD SAGINAW AMILLING Co. MUTUAL FIRE PAICHIGAN MILLERS’ SANDUSAY./7/ICH INSURANCE COMPANY ENGINEERING SERVICE DEPT. Py Sia CEcrey, EL cm ie SCALE Va ae CD? ry. paietd NO. ee r Ao. 6 WIR & lalla % | AA ie Wee he = yo | METAL 60 4MP Py ote a al ies! | 6O4MP. | SW/7TCA | | | | | 3 5 a : | et | 2 MO. 1g WITEE ae sabe el acm 4¢ AMP i FUSE. es «8 Regen De eg Semen Mies 5s 1) ae 2 CABINET 4F4OANMP |< 4 AAP. RBELAYS FUSE ripe ate 30 AMP ROHP CPT Fe 4F#qO Vv. 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The following results were obtained at the Portland Farmer's Elevator Co., Portland, Michigan on April 23,1921, Character of service: <20 volt, 60 cycle, 2 phase current, supplied by the Municipal Power Pisnt. MOT #1. No nameplate, supposed to be 10 H.P. Driving Clipper Cleaner #99-D loaded with oats, 3 short elevators loaded with oats, 1 elevator, 46°4" long, 30" head pulley, 5" x9" cups, 9" canvas belt, known as #1, empty, and 1 elevator, 46'4" long, <0" head pulley, 44" x 7" cups, 8" canvas belt, kmown as #2, loaded with oats. Voits Av. amps. Start. anps. Watts HP. P.F, 218 12,9 3500 4.7 63 Driving 3 short elevators empty, and #1 empty. and #2 loaded with oats. Volts Av. amps. Start. amps. Watts H.P. P.F. 224 12.5 2700s «3.6 .48 Driving 3 short elevators empty, and #1 empty and #2 loaded with oats, Volts Av. amps. Start. amps. Watts H.P. P.F, 224 12.3 2340 3.12 041 Remark 83 Starting current very high due to the use of Fairbanks. Morse Induction Motor resistance starter. MOTOR #2. 7.5 H.P., Fairbamks-Morse Type B, 17 amps., figures not discernible for speed. Driving line shaft md 1 short elevator empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 218 7.0 1300 1.7 041 Driving Clipper Clover-seed Cleaner #132 B, and 1 short elevator both empty. Volts Av. amps. Start. amps. Watts H.P. PF. 216 8.0 1540 2,04 0435 Driving 2 ‘ ‘ 1 at eer » Q one | c GFL: i A Ae BM IEE. o. + BR BS | VC ee VA A kde TV Se PT Ira te . Ww SS aN Ba ies | Eo rw - pry l CABINET aoa 2h a mR HR f rrr ree (OCRES FeELAY adel A a £ue. N60 AMA = (oreo evi Sn Te. TAM VOM Grr Ao oe CLOVOLT Anan ee mes LANSING, MICH. nism, = a Ne a DLL ATTA, Pan Pk ae ae PL eee mee Me ed INSURANCE COMPANY ENGINEERING SERVICE DEPT. Pe (ota a ti a ee 10. The following results were obtained at the Portland Elevator Co., Portland, Michigan on April 23, 1921. Character of service: 440 volt, 60 cycle, 5 phase current which is transformed, by means of the Scott camnection, from the 2 phase current, supplied by the Municipal Power Plant. MOTOR #1. 7.5 H.P. Western Electric, Type KT, 1200 R.P.M. 9.45 amps. per phase. Driving 6 short elevator legs empty. Volts Av. emps. Start. amps. Watts H.P. P.F. 436 5.5 25.5 1850 2.46 045 Driving the above elevators and #19 Clipper cleaner all empty. Volts Av. amps. Start. amps. Watts HP. P.Fe 432 6.5 27.5 5100 4.15 064 Driving six elevators and #89 Clipper Cleaner, empty. Volts Av. amps. Start. amps. Watts H.P. P.F, 432 7.0 28.5 3710 4.95 71 Driving six elevators and #16 Clipper Cleaner, empty. Volts Av. amps. Start. amps, Watts H.P. P.F. 450 6.0 27 5 2150 2.86 48 MOTOR #2. 5 H.P. Westinghouse, Type CS, 850 R.P.M., 6.5 amps. Driving 1 elevator leg 47'7" long, head pulley diem, 30" 7" canvas belt, 7" x 3%" cups, kmown as elevator #1, and li. 1 elevator leg 47'7" long, head pulley diam. 30", 10" can- vas belt, 5 x 9" cups, lmown as elevator #2, both empty. Volts Av. amps. Start. anps. Watts HP. P.F. 420 4.0 27.0 | 600 08 20 Driving elevators #1 empty and #2 loaded with oats. Volts Av. amps. Start. smps. Watts HeP. P.F. 430 3.75 1040 1.4 373 Driving #1 loaded with beans and #2 laoded with oats. Volts Av. amps, Start. anps. Watts HP. PF. 432 4.0 1200 1.6 041 MOTOR #3. 5 HP., Western Electric, Type KT, 1200 R.P.M., 4.4 amps. Driving 1 short elevator leg and one two-decker Invincible bean cleaner #16862 both empty. Volts Av. ams. Start. amps. Watts HoP. PF. 424 2.75 12.0 330 044 016 Driving the above elevator empty and cleaner loaded, Volts Av. mps. Start. ams. Watts H.P. PF, 430 2.7 12.5 410 055 °20 V1 ee A ao Ae ee ee = | [z: las EB! ae a rs é a > = > - A SIAM2 ZIAD ado WV FUSES forest eat Fi Wey Ps) ra ee Pe Ie Ll ed | 629M | | Rt clad | A Me ede 6 AMP x SwrcH Ve RELAY RELAY ar: ey te 2) & wee) Cow ed RS I VE Area Tea ss oe ComP Taal ean \See | Le RM CLA ee i We 6 Wiiee VCR Aa ed r . y LARS (vA Cowe: “Agta Lae oe ry 4 Cond! (3 P Soke PETA oe Als -" ~ =~ 7 et 4 q Vr Paaeee 4 A CABINET fi RV ea 30 ea 4 s OP £4 7F. pe ae De | me Ak Pa vd x VA Aad i Me ea ‘a ada Wo. & WRE LA ay SS Fir faa PFA Ad DRIVING A7EHRY MN Ca RPENTER SHOP SDIC7TLAND KLEV. Co. ea) a ae Aa A MICHIGAN MILLERS’ MUTUAL FIRE INSURANCE COMPANY ENGINEERING SERVICE DEPT. LANSING, MICH. RT ae) tt ML A Prats rm PRINT NO... 2% | 12, The following results were obtained at the Owosso Elevator & Lumber Co's. Elevator, Owosso, Michigan, April 30th, 1921. Character of service: 440 volt, 60 cycle, 3 phase, alternating current, supplied by the Consumers Power Co., Owosso, Mich. MOTOR #1. 15 H.P., Western Electric, Type KT, 1715 R.P.M., 18.5 amps. per phase, Driving elevator leg 34 feet long, 24" head pulley, 7" canvas belt, 4 x 7" cups, empty, known as Elevator #1 and one elevator leg 41 feet long, 24" head pulley, 8" canvas belt, 5 x 8" cups, empty, known as elevator #2, also two short elevator legs empty, and line shaft. Volts Av. amps. Start. amps. Watts H.P. P.F. 474 7.5 35200 4.27 052 Driving elevators #1 and #2 empty, two short elevator legs empty and Clipper Cleaner #8 D, empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 488 975 : 4790 6.57 58 Driving elevator legs #1 and #2 empty, two short elevator legs empty and 30" blower fan for loading cars, Volts Av. ams. Start. amps. Watts H.P. P.F. 486 15.1 10500 14.14 86 Driving elevator #1 empty and elevator #2 loaded, two short elevator legs empty and lire shaft. 13, Volts Av.amps. Start. amps, Watts H.P. PF. 489 8.5 5600 4,8 eSl Driving elevator #1 loaded, #2 empty, Clipper cleaner #8 D loaded, < short elevator legs em ty. Volts Av.emps. Start. amps. Watts HP. P.F. 488 10.25 4900 6.4 208 MOTOR #2. 10 H.P. Fairbanks-Morse, Type B, 1800 R.P.M., 13 amps. per phase. Driving elevator 35 feet long, 24" head pulley, 6" canvas belt S& x6 " cups, empty, know as elevator #1, and one elevator 40 feet long, 24" head pulley, 5¢é" canvas belt, 34 x 5" cups, empty, known as elevator #2, ani two short elevator legs empty. Volts Av. amps. Start. ams. Watts H.P. P.F, 486 8.5 1650 2.2 o2d Driving elevators #1 and #2 empty ani two short elevators empty and Clipper cleaner #99 D empty. Volts Av. amps, Start. ams. Watts H.P. PF. 488 10 4900 6.5 258 Driving elevators #1 and #2 empty, two short elevato's empty and Gibbs bean picker empty. Volts Av. amps. Start. amps, Watts HP. P.F. 484 8.4 2600 3.46 37 Driving elevators #1 ani #2 empty, two short elevators empty and one elevator 40 feet long, 24" head pulley, 4" x 7" cups, dhain drive, known as elevator #3, empty. 14, Volts Av. amps. Start. Amps, Watts H.P. PF, 480 8.4 2550 5.59 0 56 Driving elevators #1, 2 and 3 empty, two short elev. ators empty amd an elevator 34 feet long, <4" head pulley, 6" canvas belt, 6 x 3%" cups, empty, known as elevator #4. Volts Av. amps. Start. amps, Watts H.P. P.F, 481 8.8 2730 5.635 OT MOTOR #3. 7k HP. Fairbanks-Morse, Type B, 1800 R.P.M., 10 amps. per phase. Driving Sprout & Waldron cob crusher empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 493 6 2040 2.78 4 Running above crusher loaded. Volts Av. amps. Start. amps. Watts H.P. P.F. 492 15 9800 13.2 66 Remarks ; The load fluctuated considerably, consequently it was impossible to get very accurate results, MOTOR #4, | 7% HP. Fairbenks-Morse Type B, 1800 R.P.M., 10 amps. per phase. Driving one long elevator loaded, one long elevator empty, one short elevator loaded, line shaft and corn sheller empty. Volts Av. amps. Start. amps. Watts H.P. P.F, 488 5 2800 3072 66 15. Driving two long elevators and one short elevator empty. Volts Av. amps. Start amps. Watts H.P. PF. 480 5.5 2450 3.28 o 54 Driving two long elevators loaded, one short elevator empty, corn sheller empty. Volts Av. anps. Start. amps. Watts H.P. PF, 486 5.5 2600 3.48 057 MOTORS #5 end #6. Both motors alike, 10 H,p, Fairbanks-Morse, Type B, 1800 R.P.M. 15 amps. per phase, Driving Hallstead 18" attrition mill empty. Volts Av. amps. Start.amps. Watts H.P. PF. 486 17.2 9100 12.1 63 Driving the above mill loaded with corn and oats mixed, Volts Av.amps. Start. amps. Watts HoP. P.F, 480 27 6 17900 25.8 78 Remarks: Both motors were so hot that it was impossible to leave the bare hand on them. Sgidecpasi = 9h Seaman ecoasd dic «eager e \ Ben eae dee iN eS ren’ > £ 2A et re Pees NING fa | ok | rE SE ° s : Se te as bana f <2 >> 4 > ‘d R) yize Ls ae re it y hats . \W ya Paadee rere. wa ee ae Sie Pee = Ny Vn Re a FUSE re Ree o Ne : yi ALN o Mada VPA La Za a AeA ee rama | pi se Ae Rae Me A ae | i 8 P pale) Fe 5 | EN 8 C3 5 M08 Wee & oi me Ze ae IN 4 CIND. aca a Ploy) POSE od ie | oe I = AA A SS OMIP PELAY CSSA LF? Far ae Gi Paes eA ae 2A A COND. — = 16, The following results were obtained at the Cass Bean and Grain Co's. elevator, Bay City, (Salzburg), Michigan, May 7th, 1921, Character of service: 220 volt, 60 cycle, 3 phase, supplied by the Consumers Power Co., Bay City, Michigan. MOTOR #1. 7.5 HP. Westinghouse, Type CF. 9.8 amps. per phase, 1130 R.P.M. Driving Clipper Cleaner #8d, empty. Volts Av. amps. Start. amps. Watts HB. PF. 229 14.8 4100 5.97 07435 MOTH #2. 5 HP. 1150 R.P.M., 13 amps. per phase, Type CF, Westinghouse, Driving Clipper Cleaner #99-D, empty. Volts Av. amps. Start. amps. Watts H.B. P.F,. 240 15.35 4900 6.5 89 MOTOR #3. 15 H.P., Fairbanks-Morse, 1200 R.P.M., Type H, Full load emp. 58. Driving fan on Ellis dryer. Volts Av. amps. Start. amps. Watts HF. P.F. 242 45 16450 21.6 075 MOTOR #4. 3 H.P., Fairbanks-Morse Type H, 1130 R.P.M., 8.8 anps. per phase, Driving Crippen blended action bean picker, empty. Volts Av. amps. Start. ams. Watts H.P. P.F. 252 5 | 650 .86 .29 Driving the above machine loaded. Volts Av. amps, Start. amps. Watts H.P. P.F, 248 5.2 730 92 230 MOTOR #5. 2 HP. Yestinhouse type CS, 1120 R.P.M. 5.8 amps. Driving Oxford bean polisher #475, empty. Volts Av. ams. Start. amps, Watts H.P. PF. 250 5 1100 1.46 Sl Driving the above machine loaded. Volts Av. emps. Start. amps. Watts H.P. PF, 248 3 13500 1.735 61 MOTOR #6. 1 HP. Westinghouse, Type CSA, 1725 R.P.M., 2.5 amps. Driving Giant bean picker loaded, Volts Av. ams. Start. amps. Watts H,P. P.F. 248 1.85 750 1 945 MOTOR #7. 2 H.p. Westinghouse, Type CS, 11<0 R.P.M, 5.8 amps. Driving elevator 61.5 feet long, 36" head pulley, 8 x 5 cups, 9" rubberoid canvas belt, empty. Volts Av. amps. Start. amps. Watts H.P. PF. 252 4.1 29 650 87 eOT Driving the above elevator loaded with wheat. Volts Av. amps. Start. amps. Watts H.P. PF. 252 4.85 13500 1.78 0635 17, 18, MOTOR #8. 1/2 H.P. Westinghouse, Type CSA, 1140 R.P.M., 1.75 amps. Driving 16 hand bean pickers, empty. Volts Av. amps. Start, amps. Watts Hp. PF, 2 & 2.2 6 415 095 0435 MOTOR #9. 30 H.P. Fairbanks-Morse Type B, 1200 R.P.M., 74 amps. Driving Dreadnaught 24" Attrition Mi11, Bryant Cob Crusher, corn sheller, and 5 short elevators, all empty. Volts Av. amps. Start. amps. Watts H.P, PF. 236 49.8 6600 8.76 005 Driving attrition mill and 5 short elevators loaded with oats, other machines empty. Volts Av. amps, Start. amps. Watts H.P, P.F, 236 64.5 17550 23.4 067 Driving cob crusher loaded with cobs, other machines empty. Volts Av. amps. Start. amps. Watts H.P. PF, 232 54 8550 11.35 .39 Driving cob crusher and sheller loaded with corn on cobs, other Machines empty. Volts Av. amps. Sart. ams. Watts HP. PF. 236 61.5 16050 21.5 064 Driving attrition mill loaded with corn and crushed cobs all other machines empty. Volts Av. amps. Start. amps. Watts OS PF. 238 66 20100 26.7 74 19. The following results were obtained at the Stockbridge Elevator Co's. Elevator, Jackson Michigan on May 14th, 1921. Character of service: 440 volt, 60 cycle, 3 phase, supplied by the Consumers Power Co., Jackson, Michigan. MOTOR #1. 3 HP. General Electric, Type KT, 1200 R.P.M., 4.2 amps, Drives fan on Clarage #9, Type CI car loader, Volts Av. amps. Start. amps. Watts HP. PF. 482 6 25.5 4460 5.95 89 MOTOR #2. 10 H.P. Wagner, Type 14 ZBW, 1730 R.P.M., 135 amps. Driving Monarch #384 size 2 C Cracked Corn Separator and Sprout & Waldron #16 corm crusher, both machines empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 468 5 45.5 2800 4.05 69 Driving above machines loaded with corn, Volts Av. amps. Start. amps. Watts HP. PF. 460 4.5 45.5 1810 5.58 ool Driving line shaft only. Volts Av. anps. Start. amps. Watts HePe PF. 458 4 1200 1.61 008 Driving the above machines empty and Crippen bean picker empty. Volts Av. amps. Start. amps. Watts H.P. PF. 460 5.5 2550 5.4 058 <0. MOTOR #3. 5 H.P. Western Electric Type KT, 1<00 R.P.M., 6.6 amps. Driving line shaft only. Volts Av. amps. Start. amps. Watts HP, PF. 469 4 — 40 450 06 14 Driving Invincible 3 Deck Cleaner empty. Volts Av. amps. Start. amps. Watts H.P. P.F, 464 4.5 600 28 017 Remarks: | This motor is also used to run freight elevator. MOTOR #4, 3 H.P. Wagner, Type 11 PBP, 1750 R.FP.M., 8 amps. Driving an elevator leg 85'6", 33" head pulley, 11" canvas belt, 11 x 5¢" cups, empty. Volts Av. amps, Start. amps. Watts H.P. P.F, 486 1.95 27 5 690 92 42 Driving above elevator loaded with cracked corn. Volts Av. amps. Start. amps. Watts H.P. P.F. 488 2.2 990 1,52 054 MOTOR #5. 1 HP. Robbins & Meyers Type K, 1750 R.P.M., 1.4 amps. Driving Monarch aspirator #20, size 5 A, empty. Volts Av. amps. Start. amps. Watts HP. P.F, 490 1.4 6.5 690 92 09 21. MOTOR #. 7.5 H.P. General Electric Type KT, 1200 R.P.M., 9.5 amps. Driving fan on Hess Ideal Pneumatic dryer. Volts Av. amps. Start. amps. Watts HP, P.F, 488 9 Sl 6700 8.9 99 MOTR #. So HP. Western Electric, Type KT, 1800 R.* .M., 5.8 amps, Driving elevator leg 79'6" long, 33" head pulley, 11° canvas belt, 5 x 11" cups. This @levator will be known as #1, Also elevator leg 85'6" long, 36" head pulley, 11" canvas belt, 5 xX 11" cups. This elevator will be known as elevator #2. Driving #1 and #2 empty. Volts Av. amps. Start. amps, Watts HP. P.F, 480 Ze.1 610 81 005 Driving #1 loaded and #2 empty. Volts Av. amps. Start. amps. Watts HP, P.F. 476 2.7 1550 1.8 61 MOTOR #8. 10 H.P, Fairbanks-Morse 1200 R.P.M., 14 amps, per phase. Driving idler pulley only. Volts Av. amps. Start. amps. Watts H.P. P.F. 476 6 1400 1.86 0285 Driving Wolf-Dawson Wheat Washer, #W288 empty. Volts Av. amps, Start. amps. Watts H.P. P.F. 476 6.5 1800 2.4 0 04 5 H.P. Fairbanks-Morse Type B, 1800 R.P.M., 13 amps, per phase. 22. The following results were obtained at the George F. Dimond Elevator Co., St. Johns, Michigan June 9th, 1921. Character of Services; 220 volt, 60 cycle, 3 phase furnished by the Municipal Power Plants. MOTOR #1. 10 H.Pp. Fairbanks-Morse, Type B, 1800 R.P.M., 24.4 amps. per phase, Driving Clipper Cleaner #149 D, loaded with barley, and one elevator leg 44° long, 24" head pulley, know as #2 Elevator, and one elevator 44' long, 12" head pulley, elevator known as #1, both enpty. Volts Av. amps. Start. amps, Watts HP. P.F. 230 18.2 40 5.6 258 Driving Elevator #1 empty and Elevator #2 loaded with barley. Volts Av. amps. Start. amps. Watts HP. PF. 234 17 1951 2.59 <8 Driving elevators #1 and #2 empty. Volts Av. amps. Start. amps. Watts HP. P.F. 238 17.5 1700 += 2.26 024 Driving cleaner and elevators both empty. Volts Av. amps. Start. amps. Watts H,P. PF. 234 18.8 4400 5.85 258 MOTCR#2. 5 H.P. Fairbanks-Morse Type B, 1800 R.P.M., 13 amps. per phase. Driving elevator leg 37' long, 16" head pulley, 8%" leather belt, 8 x 5 cups, knowm as elevator #1 and elevator leg 46*long, 16" head pulley, 8" leather belt, 8 x 5" cups, kmown as elevator #2, both empty, and a line shaft with two short elevators, both empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 232 10 1800 2.4 45 Driving the two long elevators, two short elevators and Clipper Cleaner #89, all empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 224 ll 2650 5252 62 Driving Oxford Bean Polisher #1L, two short, and the two long elevators, all empty. Volts Av. amps. Start. amps. Watts H.P. P.F. 230 10.75 2500 Seo 58 Driving Centrifugal Bean Picker, two short, and the two long elevators, all empty. Volts Av. amps. Start. ams. Watts 4H.P. P.F. 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