File:Cassier's magazine (1904) (14768574932).jpg

Identifier: cassiersmagazi2719041newy (find matches)
Title: Cassier's magazine
Year: 1891 (1890s)
Authors:
Subjects: Engineering
Publisher: New York Cassier Magazine Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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Text Appearing Before Image:
-AN ELECTRICALLY DRIVEN OPEN-SIDE PLANER. MADE BY THE DETRICK & HARVEYMACHINE CO., BALTIMORE, MARYLAND, U. S. A. in reversing holders excepted. An ex-ception, however, occurs in the Arm-strong tool holder for planers, in whichfour tools operate in succession, thewidth of feed traverse being equally di-vided among the four, the principlebeing the same as that of the cutters ina boring head. The result is that thefeed can be increased directly as thenumber of tools. versal, and also in some cases to put iton at either end of the stroke, and tomake it capable of alteration while themachine is running. The old ratchetand click is, therefore, an obsolete de-vice. A special device which is of consider-able value from the point of setting plan-ing machines down in a shop is that offixed versus adjustable striking forks. 140 CASSIERS MAGAZINE
Text Appearing After Image:
MODERN PLANERS 141 In all ordinary machines these are fixedin one position, so that very little lati-tude is left for the angle of the belt drive.In the device patented by Cunliffe &Croom, Ltd., of Manchester, England,the whole of the belt reversing gear ismovable round a quadrant face on whichit can be set, and clamped at any anglefrom the vertical to the horizontal.This machine is shown in Fig. 11. The problem of vee verstis flat slidesfor the table has long exercised theminds of manufacturers. The vee is the to a certain extent; but these give moretrouble when wear takes place, and,therefore, practice favours the flat slidesto an increasing extent, so that at thepresent time the flat ways run the veesvery closely. They afford a good basis for levellingthe machines on their foundations, aswell as being easy to correct, and theirlubrication is more readily kept efficient,because the oil does not run away, as itdoes down the sides of a vee. Whetherthe higher speeds now demanded wi

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