Knight's Mechanical Encyclopedia, U., Va′ri-a-ble-speed wheel.

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19th-Century American

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chapter : entry
entry

Table of Contents:

Ul′tra-ma-rine′.

Um-bil′i-cal Band′age.

Um-brel′la-stand.

Un′cial Writ′ing.

Un′der-ground-railway.

Un′der-lay′er.

Un′der-lay-shaft.

Un′der-lev′el drift.

Un′der-met′al.

Un′der-pin′ning.

Un′der-set′ting.

Un′der-shot Wa′ter-wheel.

Un′der-shut-wheel.

Un′der-shut-valve.

Un′der-the-top.

Un-hair′ing–knife.

Un-hair′ing–ma-chine′.

Un′ion–joint.

Un′ion–pump.

U-ni-versal Bor′ing–ma-chine.

U-ni-vers′al chuck.

U-ni-vers′al Com′pass.

U-ni-vers′al Coup′ling.

U-ni-vers′al In′stru-ment.

U-ni-vers′al joint.

U-ni-vers′al Syr′inge.

Un-load′ing ma-chine′.

Up′per–leath′er.

Up′per–ma-chines′.

Up-set′ting–press.

Up′ward Fil′ter.

U-ran′i-co-plas′tic In′stru-ments.

U-re′thra–cut′ter.

U-re′thra–syr′inge.

U-re′thra-tome.

U-ri-nom′e-ter.

U′ter-ine Di-lat′or.

U′ter-ine douche.

U′ter-ine El′e-vator.

U′ter-ine re-dress′or.

U′ter-ine Scar′i-fi-cator.

U′ter-ine Spec′u-lum.

U′ter-ine Sup-port′er.

U′vu-la–for′ceps.

U-vu′la-tome.

Vac′ci-nator.

Vac′u-um-appa-ra′tus.

Vac′u-um-brake.

Vac′u-um–cyl′in-der cock.

Vac′u-um–fil′ter.

Vac′u-um–gage.

Vac′u-um–pan.

Vacu-um–pump.

Vac′u-um–valve.

Vag′i-nal Specu-lum.

Vag′i-nal Syr′inge.

Va-len′ci-ennes′ lace.

Va-len-tin's′ knife.

Va-let′ a Pa-tin′.

Va-lise′–lock.

Va-lise′–sad′dle.

Valve–buck′et.

Valve–cham′ber.

Valve–coup′ling.

Vand-kik′kat.

Vapor-a′ri-um.

Va′por-burn′er.

Va′por-burn′ing stove.

Va′por-en′gine.

Va′por-in-hal′er.

Va′por-izing-stove.

Va′ri-a-ble cut-off.

Va′ri-a-ble-speed Pul′ley.

Va′ri-a-ble-speed wheel.

Va-ri-a′tion-com′pass.

Var′i-cose Stock′ing.

Var′i-cose-vein Band′age.

Var′nish-ing.

Var′nish-lens.

Vault-cov′er.

Vault′ing-horse.

Veg′e-ta-ble-chop′per.

Veg′e-ta-ble-cut′ter.

Veg′e-ta-ble-ex′tracts Appa-ra′tus.

Veg′e-ta-ble-flan′nel.

Veg′e-ta-ble-grat′er.

Veg′e-ta-ble-i′vo-ry.

Veg′e-ta-ble-parch′ment.

Veg′e-ta-ble-sli′--cer.

Vege-ta-ble-wash′er.

Velo-cim′e-ter.

Ve-loc′i-pede.

Vel-vet-een′.

Vel′vet-loom.

Vel′vet-pa′per.

Vel′vet-pile Car′pet.

Vel′vet-tree.

Ve-neer′--bend′ing.

Ve-neer′--cut′ter.

Ve-neer′--cut′ting ma-chine′.

Ve-neer′ing-ham′mer.

Ve-neer′--mill.

Ve-neer′--plan′ing ma-chine′.

Ve-neer′--pol′ish-ing ma-chine′.

Ve-neer′--press.

Ve-neer′--saw.

Ve-neer′--straight′en-ing ma-chine′.

Ve-ne′tian ball.

Ve-ne′tian blind.

Ve-ne′tian Car′pet.

Ve-ne′tian glass.

Ve-ne′tian Win′dow.

Vent-fau′cet.

Ven′ti-lating-bricks.

Ven′ti-lating-heat′er.

Ven′ti-lating mill-stones.

Ven′ti-lating-stack.

Ven′ti-lating Wa′ter-wheel.

Ven′ti-lator.

Vent-stop′per.

Verge-es-cape′ment.

Ver′ni-er-cal′i-per.

Ver′ni-er-com′pass.

Ver′ni-er-tran′--sit.

Ve-ro′na-serge.

Ver′ti-cal Bor′ing-ma-chine′.

Ver′ti-cal buhr-mill.

Ver′ti-cal dial.

Ver′ti-cal drill.

Verti-cal es-cape′--ment.

Ver′ti-cal mill.

Ver′ti-cal plan.

Ver′ti-cal Plan′ing-ma-chine′.

Ver′ti-cal pump.

Ver′ti-cal Spin′dle-step.

Ver′ti-cal steam-en′gine.

Vet′er-i-na-ry In′stru-ment.

Vi-a-tom′e-ter.

Vi′brat-ing-pis′ton steam-en′gine.

Vi′brat-ing-pro-pel′ler.

Vi′brat-ing-roll′er.

Vi′brat-ing steam-en′gine.

Vi′bro-scope.

Vine-fi-ca′teur.

Vin′e-gar-appa-ra′tus.

Vi-ole′ d'a-mour′.

Vi′o-lin′--pi-a′no.

Vio-lon-cel′lo.

Vit′re-o-graph.

Vit-ri-fac′tion.

Vi′trodea Trino.

Vol-can′ic En′gine.

Vol-i-cim′e-ter.

Vol′ta-e-lec-trom′e-ter.

Vol-ta′ic Bat′ter-y.

Vol-ta′ic light.

Vol-ta′ic pile.

Vol-tam′e-ter.

Vol′ta-plast.

Vol′u-ta-ry press.

Vo-lute′--com′pass-es.

Vo-lute′--spring.

Vo-lute′--wheel.

Vor′tex Wa′ter-wheel.

Vote-re-cord′er.

Vox-Hu-ma′na.

Voy′ol-block.

Vul ′can-ite.

Vul ′can-ite-flask.

Vul ′can-ite spring.

Vul ′can-iz-er.

Vul-can-iz′ing.

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Va′ri-a-ble-speed wheel.

A contrivance for obtaining alternately accelerated and retarded circular motion.

Variable gears.

Each wheel has three cogged portions of varying radii, which mesh with counterpart portions of the opposite wheel. While the driver has a regular speed of rotation, three rates of motion are imparted to the driven-wheel, according to the radii of the portions in contact at different times.

In another form, each wheel has four cogged sectors; the section of extreme range being divided by those of medium and equal radii. The sectors are arranged on different planes, and the velocity imparted is proportioned to the relative radii of the parts in contact.

Thus, in Fig. 6909, in the two compound gear-wheels A B, the respective segments a a, b b, c c, and d d mesh together, an arrangement by which four different rates of speed may be obtained, either A or B being used as the driver, or double that number, in case they alternately perform this function.

1877.

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