The Wheels

Exhibition material for The Wheels Suzanne Harris gallery advert, with close up photos and templates- for “The Wheels”--solo show 112 greene march 17-29 and “Fours” mockup and final – Suzanne Harris 112 Greene Street Gallery Oct 20-Nov 8

Loose page from book, source not listed–p 13– called “The Teeth of Gear-Wheels” presumably a study for The Wheels– “teeth,” “point of contact between them moves or takes place along the thickened arc or curve c x, or along the path of the generating circle G”  “as motion continued the contact would pass along the thickened curve until it arrived at the line of centres x”  ‘since the teeth have during this path of contact approached the line of centres, this part of the whole arc of action or of the path of contact is termed the arc of approach. After the two teeth have passed the line of centres x, the pat of contact of the teeth will be along the dotted arc from x to L, and as the teeth are during this period of motion receding from x this part of the contact path is termed the arc of recess”  

“Throughout its whole path the face of the tooth of one wheel has contact with the flank only of the tooth of the other wheel, and also that the flank only of the driving-wheel tooth has contact before the tooth reaches the line of centres, while the faceof only the driving tooth has contact after the tooth has passed the line of centres.”\

“Thus the flanks of tooth A and of tooth D are in driving contact with the faces of teeth B and E, while the face of tooth H is in contact with the flank of tooth “

“The action of the teeth will in either case serve to give the theoretically perfect motion so far as uniformity of velocity is concerned, or, in other words, the motion of the driver will be transmitted with perfect uniformity to the driven wheel. It will be observed, however, that by the removal of the faces of the teeth, there are a less number of teeth in contact at each instant of time;”