THE OOLOGIST. 



THE !ViOt^5ARCH CHAINLESS. 

 A Bicycle Qearing Absolutely Kew^ Kovel^ and Practical 



In their indiscriminate haste to an- 

 nounce the making of chainless wheels, 

 some manufacturers have tumbled over 

 each other in the endeavor to be in front. 

 To be in front is a spasm, to "keep in 

 front " IS sustained energy. To utter a 

 truism is one thing, to live up to it is 

 another. 



The spirit of the aphorism of tlie 

 Monarch Cycle M.umfacUiring Com 

 pany, " liide a Monarcii and Keep in 

 Front," is well illustrated in its latest 

 product, Tiie Monarch Chainless. Alive 

 to tlie times, the company will pro- 

 duce a chainless bicycle which has been 

 proven by repeated tests to be superior, 

 in its class, in every particular. 



Two surfaces that will roll on each 

 other will transmit motion from one to 

 the other. If the surfaces are compar- 

 atively smooth, the motion is transmit- 

 ted by friction. Hut, wlien the surfaces 

 are provided with projections, the mo- 

 tion, altimugh it is unchanged in nature, 

 IS transmitted by direct pnsssure, and 

 it is irregular unless the acting surfaces 

 of tlie projections are carefully and 

 exactly sliaped to produce an even mo- 

 tion. It is the dilHculty which is ex- 

 perienced to produce these perfect pro- 

 jections, when bevel gears are used, 

 which leads the experienced mechanic 

 awav from them. Long experience in 

 Sewing Machine manufacture has 

 taught the Monarch Company that 

 whatever transmission was used, bevel 

 gears were Tiot to be considered if easy 

 runnincr was to be thought of. The 

 result his been a driviJig trear which is 

 exeellent in its <';i<5v running qualities. 



The meclrniisiM issi-nple. The crank 

 axle and hul) crcir^ somewhat resemble 

 tli'> fa'u'liar snvocUpt wlieels.thenotice 

 ab'e differeii'-e lt"inQr the teeth which 

 are eloser tofTptiK^r anfi y shape in cross 

 S"efion instead of four sided. The 

 shi^t cotmeeting the two is provided at 

 <'aeh end with a pinion havinnr roller 

 pin teeth which run in and out of the 

 vvifle anele openings between the gear 

 teeth. Each set of gears is enclosed 



but should they from any cause be ex- 

 posed the action of the pm teeth is such 

 that they are self-cleaning, I'orcini; mud 

 and dirt out from between the teeth. 

 One of the chief objections urge(i 

 against chainless wheels by mec hanics 

 is that should the rear frame become 

 twisted or out of line, there would be a 

 consequent bindingof the matinggears. 

 The Monarch chaniless is entirely free 

 from this objection inasmuch that the 

 junction of the pinions and gears form 

 a type of the ball and socket joint, 

 thereby permitting free running under 

 the conditions usually met with in 

 bicycle riding. A particular advantage 

 which this gear has, and which gives it 

 the highest efliciency, is the direct lift 

 as against the end thrust which is com- 

 mon to all bevel gearing. This end 

 thrust is a prominent factor in friction 

 and frame strain. 



Another point to be counted in favor 

 of the Monarch gear is, that it is not of 

 delicate construction although com- 

 paratively light in weight. 



Asstated by (Jrant, the well known au- 

 thority on gears, "Thepingearisparticu- 

 larly valuable when the pins are made in 

 the form of rollers for then the minimum 

 of friction is reached." The friction 

 between the tooth ami pin, otherwise a 

 sliding friction at a line bearing is. with 

 a roller pin, a rolling frictioti. When 

 properly made, there is no form of tooth 

 that is superior to the mller pin 

 tooth. 



While the Monarch company is war- 

 ranted from the study of experts in 

 jtlacing its chaitdess machine on the 

 market as the best type of that class, 

 its faith in the chain wheel is in no way 

 diminished. It will coTitinne to keep 

 tliem in the forward ranks of that tyne 

 of bicycle which is yet the choice of the 

 majority of the people. In line with 

 the general policy of the Monarch com- 

 pany, the price of its chainless will be 

 ■Sinn 00. wiiich will give a complete line, 

 including chain machines, ranging from 

 this price to .S40.00. 



