THE OOLOGIST. 



THE ^O'^SARCH CHAIf^LESS. 

 A Bicycle Gearing Absolutely Hew^ Hovsl^ and Practical* 



In their indiscriminate haste to an- 

 nounce the making of chainless wheels, 

 some manufacturers have tumbled over 

 «acli 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 

 anotlier. 



Tlie spirit of the apiiorism of the 

 Monarch Cycle M.iniifacLurmg Com- 

 pany, " Ride a Monarch and Keep in 

 Front," is well illustrated in its latest 

 product, The 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 . lint, when the surfaces 

 are provided with projections, the mo- 

 tion, although it is unchanged in nature, 

 is transmitted by direct pressure, and 

 it is irregular unless the acting surfaces 

 of the projections are carefully and 

 exactly sliaped to produce an even mo- 

 tion. It is the difHculty 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 not to be considered if easy 

 running was to be thought of. The 

 result has bf^f^n a driving gear which is 

 exf^ellent in its r'-.i^v running qualities. 



The mecliHUisni is simple. Tlie crank 

 Hxlf^ and hut) £TP->r^ somewhat resemble 

 tho f:i'Tii]i;irsnr<^''kef- wheels, the notice 

 able diltereiK'P l)f'ina' the teptli which 

 are r-loser totrether and y shape in cross 

 s^-ntion instead of four sided. Th*; 

 sh-ift, eonneeiing the two is provider! at 

 p-Aoh end witli a pinion having roller 

 pin teeth wliich run in and out of the 

 wir)e ancle openings between th»^ gear 

 teeth. Each set of gears is enclosed 



but should they from any cause be "ex- 

 posed the action of the pin teeth is such 

 that they are self-cleaning, forcin/j- mud 

 and dirt out from between the teeth. 

 One of tlie chief objections urged 

 against chainless wheels by mefhanics 

 is that should the rear frame become 

 twisted or out of line, there would be a 

 consequent binding of the mating gears. 

 The Monarch chainless 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 efficiency, 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. 



As stated by Grant, the well known au- 

 thority on gears,"The pin gear is particu- 

 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 and pin, otherwise a 

 sliding friction at a line bearing is. with 

 a roller pin, a rolling friction. When 

 properly made, there is no form of tooth 

 that is superior to the roller pin 

 tooth. 



While the Monarch company is war- 

 ranted from the study of experts in 

 placing its chainless machine on the 

 market as the best type of ihat class, 

 its faith in the chain wheel is in no Vvray 

 diminished. It will continne to keep 

 them in the forward ranks of that type 

 of bicycle which is yet the choice of tlie 

 majority of the peoyOe. In line with 

 the general poliey of the Monarch com- 

 pany, the r)rice of its chairdess will be 

 SinfVOO. which will give a complete line, 

 including chain machines, ranging from 

 this price to $40.00. 



