IMAGE EVALUATION TEST TARGET (MT-S) 1111.0 ^ I.I IM 112 M 2.2 11:25 i 1.4 - 6" 4 1.6 Photographic Sciences Corporation M 23 WtST MAIN STREET WEBSTER, NY. 14580 (716) 8/2'4&03 # -%^ I CIHM/ICMH Microfiche Series. CIHIVl/ICIVIH Collection de microfiches. Canadian Institute for Historical Microreproductions / Institut Canadian de microreproductions historiques Technical and Bibliographic Notes/Notas techniques at bibliopaphiques The Institute has attempted to obtain the best original copy available for filming. Features of this copy which may be bibliographically unique, which may alter any of the images in tha reproduction, or which may significantly change the usual method of filming, are checked below. Coloured covers/ Couverture de couleur Covers damaged/ Couverture endommag^e I I Covers restored and/or laminated/ Ui ' Cover title missing/ Letit I I Coloured maps/ Couverture restaurde et/ou peiliculde •iar title missing/ itre de couverture manque sured maps/ Cartes g^ographiquds en couleur □ Coloured ink (i.e. other than blue or black)/ Encre de couleur (i.e. autre que bleue ou no □ Coloured plates and/or illustrations/ Planches et/ou illustrations an couleur □ Bound with other material/ Reiii avec d'autres documents noire) □ Tight binding may cause shpdows or distortion along interior margin/ La re liure serree peut causer de I'ombre ou de la distorsion le long de Ea marg( interieure □ Blank leaves added during restoration may appear within the text. Whenever possible, these have been omitted from filming/ II se peut que certaines pages blanches ajout^es lors dune restauration apparaissent dans la taxte, mais, lorsque cela dtait possible, ces pages n'ont pas iti filmies. r~l\ Additional comments:/ Commentaires suppl^mentaires- [Printed ephemera] [2] p. L'Institut a microfilme le meilleur exemplaire qu'il lui a eti possible de se procurer. Les details de cet exemplaire qui sont peutdtre uniques du point de vue btbliographique, qui peuvent modifier une image reproduite, ou qui peuvent exiger une modification dans la m^thode normale de filmage sont indiqu^s ci-dessous. n Coloured pages/ Pages de couleur Pages damaged/ Pages endommagees Pages restored and/or laminated/ Pages restaurees et/ou pelliculees "~^ Pages discoloured, stained or foxed/ D Pages d6colorees, tachet6es ou piquees Pages detached/ Pages ddtachees I /] Showthrough/ lyj T Transparence □ Quality of print varies/ Quaiiti in^gale de i'impression □ Includes supplementary material/ Comprend du materiel supplementaire □ Only edition available/ Seule Edition disponible n Pages wholly or partially obscured by errata slips, tissues, etc., have been refilmed to ensure the best possible image/ Les pages totalement ou partiellement obscurcies par un feuillet d'errata, une pelure, etc., ont 6t6 filmies i nouveau de facon a obtenir la meilleure image possible. This item is filmed at the reduction ratio checked below/ Ce document est film6 au taux de reduction indiqud ci-dessous. ^°X 14X 18X 22X 26X 30X J 12X 16X 20X 24X 28X n 32X The copy filmed here has bean reproduced thanks to the generosity of: IJbrary of the Public Archives of Canada The images appearing here are the best quality possible considering the condition and iegibiiity of the original copy and in keeping with the fiSming contract specifications. Original copies in printed paper covers are filmed beginning with the front cover and ending on the last page with a printed or illustrated impres- sion, or the back cover when appropriate. All other original copies are filmed beginning on the first page with a printed or illustrated impres- sion, and ending on the last page with a printed or illustrated impression. The last recorded frame on each microfiche shall contain the symbol ^«»> (meaning "CON- TINUED"), or the symbol V (meaning "END"), whichever applies. 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Tous les autres exemplalres originaux sont filmds en commengant par la premldre page qui comporte une empreinte d'Impression ou d'iilustration et en terminant par la dernldre page qui comporte une telle empreinte. Un des symboles sulvants apparaitra sur la dernldre image de cheque microfiche, selon le cas: le symbole — ^ signifie "A SUIVRE ", le symbole V signifie "FIN". Les cartes, pianches, tableaux, etc., peuvent dtre filmds d des taux de reduction diffdrents. Lorsque le document est trop grand pour dtre reproduit en un seul clichd, il est film6 A partir de i'angle sup6rieur gauche, de gauche d droite, et da haut en bas, en prenant le nombre d'images ndcessaire. Les diagrammes suivants liiustrent Ea mdthode. 1 2 3 1 2 3 4 5 6 /''tatidani SIzpA \ tixU illcllt'S. J ^/?2t Office of Secretapjy, 256 Broadway, N. Y. R. C. Black ALL, PREsioENr. Angus Sinclair, SECRETAHy. New York, Decrmbeh i6, 1895. DRIVING-BOX WEDGES. I.— Have you ever had any experience with locomotives whose driving boxes were not put up with adjustable wedges ? If so, please give us the results of your observations. 2.— Do you think that a close fitting box put up between a shoe and a fixed wedge (that could be lined only by a machinist when occasion required), would be a better method of construc- tion than the present one of a movable wedge ? 3.— If in favor of the stationary wedge, please say how ought the box to be fitted in order to give the longest mileage without risk of the box sticking when the engine is first turned out ? 4.— Will you, for experimental purposes, equip an engine with stationary wedge, and run it some four or five months, and report results to u& ? 5.— Are not tiie majority of hot boxes (not hot journals) caused by enginemen setting up movable wedges too tight ? 6.— Now that so many side rods have bushed ends, and are therefore not adjustable as to length, is it not advisable to take from enginemen the power of varying the distances apart of the axle centers, as can now be done on an engine with movable wedges ? 7.— Do not stationary wedges break off fewer axle box flanges than movable wedges ? 8.— If stationary wedge were not used, or in other words, if new engines had the frame pedestals forged with parallel faces and then fitted with pedestal blocks paralleled in every way, so that the new pedestal blocks as they came from the milling machine could h'nrof M ''''''"^'''^^' "^'^^ '^^"^ «^ ^-^^' "P or down, would back ^dlT f' ''"^V^^'^^'^''^- -o"^'J the engine tend to come with we:.^^^^^^ f ' ''''''' "^^""^ "^^^•^ ^--^ -^'-^^ than if equipped ri.I l''T^^'°' ""^^"* ''''■ "^'^^^'' '-""^I'tions, would engine be appre- Will our metnlKTs oblige the Association, and this Conm.ittee Barnett, Stratford, Ontario, Canada. J. DAVIS BARNETT, H. A. GUILDS, T. J. HATSWELL, K. ATKINSON, R. E. REDDING, Committee.