Canadian foundryman (1917) . casting, free from gas holesand the increase in breaking strength isfrom 10 to 15 per cent., with 20 to 25per cent, increase in elongation. Sometimes the bodies are cast in-reen sand moulds and sized afterwardsin a die. which gives a similar result todie casting, this alternative, however,being practiced With less success. © UNPREPAREDNESSOPlaherty.: Mister OSullivan,will ye stop and have a friendlv discus-sion on the matter of Home Rule? OSullivan: Its sorry I am. butit s no! convenient fust ; And whv not fOSullivan: Whv. to tell ye thetruth. OFlahert


Canadian foundryman (1917) . casting, free from gas holesand the increase in breaking strength isfrom 10 to 15 per cent., with 20 to 25per cent, increase in elongation. Sometimes the bodies are cast in-reen sand moulds and sized afterwardsin a die. which gives a similar result todie casting, this alternative, however,being practiced With less success. © UNPREPAREDNESSOPlaherty.: Mister OSullivan,will ye stop and have a friendlv discus-sion on the matter of Home Rule? OSullivan: Its sorry I am. butit s no! convenient fust ; And whv not fOSullivan: Whv. to tell ye thetruth. OFlaherty. T havent -ol meshticls handy. EDITORIAL CORRESPONDENCE Embracing the Further Discussion of Previously Published Articles, Inquiries forGeneral Information, Observations and Suggestions—Your Co-operation is Invited RE-BUSHING GRINDING WHEELSBy V. B. Jacobs. MANY Large manufacturing con-cerns use a number of grindingwheels in various departmentsBoi rough grinding o\ castings and gen-eral purpose work. As the stands upon. FIG. 1. REBUSHING GRINDING WHEELS which these wheels are used are general-ly of different makes and sizes, it is no:uncommon for the diameters of thewheel ends of the spindles to vary from1-16 inch to 14 inch or more. Thus,while 16-inch wheels might be used inseveral departments, it is necessary toearn- a superfluous stock to accommo-date the various size spindles. To over-come this difficulty many manufacturersmake a practice of re-bushing theirerinding wheels as occasion requires,thereby eliminating the necessity of car-rying individual wheels for each depart-ment where the sizes of the wheel spin-dles vary. The wheels are ordered withthe correct sized arbor hole to fit thelargest spindle, and with proper facili-ties they can be readily re-bushed to fitthe other sizes of spindles at slight ex-pense. The following method for performingthe work in question calls for but aslight outlay for equipment, and the re-sults will be found to be very satisfac-tory. T


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Keywords: ., boo, bookcentury1900, bookdecade1910, bookidcanfoundryman1917toro