Document jBRemvk2dj5XrE8YvxgQ6oKNy

THIS MONTH'S MOTOR TIPS . .......................... . -..,, m#t$r TYpis How Variable Speeds improve production COUNTLESS PLANTS ARE SWITCHING TO VARIDRIVE MOTORS FOR OUTPUT EFFICIENCY 'OPERATION OF A VARIDRIVE Making machines more respon sive to the operator* command has resulted in an amazing step-up in production. Machines powered with conventional constant-speed motors "loaf on the job" during many opera tions, hut the same machines' driven with Varidrive motors can accomplish one or a combination of these improvements--(1) increase production by the adjustable "overdrive" of accelerated speed; (2) effect better cutting or oper ating action by setting speed at the precise rpm essential tor (he fob; (3) provide the operator with infinite ooeds to coordinate with his rhythm f movement or selection of speed that is, in his judgment, just tho exact rpm to produce lib best workmanship. just as an automotive engine oper ates at highest efficiency at a certain speed, almost any production machine or powered equipment will produce more where selectivity of motor speeds is provided. In o study of advantages created by the use of variable speeds, the manufacturers of U. S. Vnridrive motors have compiled a list of applica tions covering diversified fields ranging from sewing machine factories to sorghum mills. From most of these interesting applications the design engineer and plant production engi neer con leom of uses they can apply to their own sphere of operations. NO OUISSINO OP MOTOR SPEEO For instance, the design engineer doesn't have to try to guess what tho ultimate speed factor will be in order to be sure his machine will deliver the full optimum of production oftor ''tnb| twtn1 fill, tbs fliasltn if Ibi belt motor he enaows his product \ .... speeds instead of a speed; cohiejjL quently in service his machine presents)! Ji`girt ir ratml. Ibis tbiazbi fixed spmf briar shaft ti rarlsbli ipeid it tbi Ukaefi liilftoht tbteblw. isdsted truiolsslu. "*'4r- nri "nblenesj" to adapt itsolf to a widijj range of conditions far beyond V I?: # contemplation. If a fixed speed moi (aster. In cutting shafts on a Intlio from operates the machine tho design aid 'largo to small dinmotor, frequent near might hnvo guessed wrongly Itvi speed to give it. *" ^dunge in speed keeps the power tool posting Bt a uniform lineal travel to I^M tHe job completed in tho least time. MMOVINO RESTRICTIONS of 1 |^mih;i Varidrive, the spoed can be The plant production engineer netda w U*',J".\y changed to synchronize with not bo restricted to a set operafi'irgS .jedfie travel or load condition. speed of a machine. He can, with that %{Mcalnes turning out dilferent sizes Voridrivo, experiment with speeds.ttfa ^.jpartJ con produce better with do a specific job best. For example."*j conveyor may at times, when heavj]yj| loaded, require slow apeod.lhen higher, speed when the load is light, or parts hove to get to a worker's locflHpni gamble speeds. If work chatters, feed &gn'!Ke adjusted for best lurfaco speed, Swigw tool lifo and finer workmanship. <4;In;uper(mentni processes involving vats under varying condi- . tUCTBIC CONTROL Vsrldrfra >ti lfpt fltC heavy-duty remola ton- REMOIt CONTBOl . Dat'Ol many control' . arringemeeti. Control shill cm be eitsndad. Hoiliontal caiawltti . control dill oi top-ct* motor.' tlons of viscosity, temperature, homo genization or rate of agitation, variable speed plays on important role, which is impossible with a fixed speed motor. The right speed makes alt the differ- ence in getting tho right mix. With Varidrive no step-cone pulleys, external gears, intermediate speed changers or connections, such as extra chains and couplings are needed. Usually a Vari drive can be direct connected to the prime driving shaft of the machine or equipment. In pumping and hydraulic control operations varTublespeqd is the answer. Flow, pressure, suction and load cAnbe maintained at Just tho right equilib rium by a Varidrive. Inuome machines the exasperating problems of noise, chatter, vibration, over-heating and pulsation contribute to the shortened life of equipment, or affect die quality of the product undergoing processing. These troublos con be invariably "cured" with a Varidrive because the operator con experiment down to a split rpm to get the most sensitive speed to overcome) tho trouble. SPEEDS TO FIT TIMING FACTORS Equipment Is frequently required to complete an operation in predeter mined time. Variablo speed permits a step-up or step-down to establish the rignt production tempo. In controlling cycles of infra-red baking, drying, heating, soaking, grinding, capping, tumbling, coating, plating, etc., speed movement must be precise--or rejects will cut into profits. What, then, is more logical than to Install a Varidrive to provide the nerve<center of Speed regulations? improvement in output In thousands of plants, the U. S. Varidrive motor has brought about amazing improvements in production. Powered machines have had their out put stepped up to 30 percent or more (n innumerable instances. In general, these Varidrtves can bo obtained in a range of from tt to 50 h.p., and for speeds from 2 to 10,000 rpm in ratios of 10: l. AOVtSNSEMfNT 16-Page Motor Booklet Tells all about U.S. VARIDRIVE MOTORS Mail tke Coupon Request for Varidrive Booklet tnvttipe folding and glueing msebins powered wilt) t. S. Virtorhs. for oilttrsat sires or envelops I tftfferent speed Is required. Virldrlvn gi.i mixing machine processing rotary drilling oil bass, the proper mis depends on thi euct spied required to biend miteriils. hmwi laboratory this Varidrive motor op- Comrovor Imtl li tonlnM hr bllhr sndI limiang wi ith YirWrlve. TMs corwef* ** Si automatic syslim for drying printed maltM Mpment for ducking performsnee of pumps.; TMs combination U. S. Viridrlre-Syncrogear powers a special rail grinding machim for cold rolling tutmnvm duets, (ram turn to light page. 0. S. mCTIlUl MOTORS fat. Ml Bai 2058, los Angeles 54, Calif., or Milford, Com. tad Iras H-page BttkUL Ho rtligation NAME. COMPANYl ADDRESS cmr_______ _20NE__STATE. NOVEMBH NOVEMBER 1993