Educational film guide (1945)

621.9 EDUCATIONAL FILM 1945 EDITION GUIDE CUTTING A TAPER— Continued use of a protractor and a ring gage for checking the angle of taper ft CUTTING AN EXTERNAL ACME THREAD. (Engine lathe ser.) 15min 16-sd-$23.35 1942 Castle 621.9 sh-trade-adult Produced by US Office of education "The picture opens with a description of the acme thread, giving its shape and emphasizing the fact that the broad surfaces on the thread provide for the transmission of power and motion with the least amount of friction. "The operator is shown studying a drawing and a table showing the dimensions of acme threads is used by him to get the dimensions of the thread he is to cut. "The method used when setting the crossfeed index for the roughing cut is clearly shown as is also the manner in which the operator sets the stocking tool to the work and checks this setting after a preliminary cut has been taken. A magnified closeup gives the outline of a stocking tool. Commentary is used to discuss its shape and the necessity for using such a tool. The various steps followed when taking the roughing cut are shown in detail from the beginning of the cut to the finish. "The method the operator uses for setting a finishing tool by means of a setting gage, together with the procedure followed when picking up the thread left by the stocking tool are shown in detail. Also the use of the threading dial and the method by which it is set are shown in detail. "After the cross-feed index shows that the thread has been cut to depth, a gage is tried on the thread showing that the thread is still slightly oversize. "The picture shows how this condition is corrected and closes with a resume of the various items shown in the picture." Business screen ft CUTTING AN EXTERNAL NATIONAL FINE "THREAD. (Engine lathe ser.) 12min 16-sd |18.59 Castle 621.9 sh-c-trade-adult Produced by the US Office of education Describes various shapes of threads and their uses, giving the characteristics of the National Pine Thread, and showing the pro cedures used to cut such a thread on a lathe "Good use of titles and explanations. Ex cellent close-up shots of working tools. Very technical. Well organized and presented." California "Excellent when there are large numbers to be taught machine work. . . Large trade school will find they save time." Collaborator ft T. AN 'NTERNAL ACME THREAD. (Machine shop work ser.) 27min 16-sd-$33 78 1944 Castle 621.9 Guide Produced by US Office of education Shows how to set up the lathe and cut an internal right-hand acme thread; how to grind and check the stocking and forming tools: why the compound rest is set at an angle toward the headstock when cutting a righthand internal thread; how the finish forming tool is centered in the groove formed by the stocking tool; how to set the threading tools to the work; and how to gage the finished threads This is No. 8 in the sub-series operations on the engine lathe in the Machine shop work series B&H Rice Calhoun SuP Dav TexVE VAF $33.78 111 $1 VES Nay CUTTING AN INTERNAL TAPER PIPE * THREAD. (Operations on the engine lathe ser.) 20min 16-sd-$28.09 1944 Castle 621.9 sh-c-trade Guide A US Office of education production Use of a taper attachment when cutting internal pipe threads; how to bore a tapered hole to gage size for threading; how to thread a tapered hole to fit a gage; and how to compute pipe thread dimensions B&H $2 SuF Dav TexVE Pi VAP $28.09 Nay VES Rice CUTTING AND THREADING PIPE BY HAND. (Shipbuilding skills ser.) 12min 16sd-$18.59 1944 Castle 621.9 Guide Produced by US Office of education Shows types of fittings and their use; use of pipe vise; use of cutter and hacksaw; swedging and its removal by reaming; selection and use of dias; proper threading and pipe thread taper This is No. 2 in the sub-series Pipefltting in the Shipbuilding skill series B&H Rice Calhoun SuP Dav TexVE Pi VAP $18.59 IdP VES Nay CUTTING AND THREADING PIPE ON A POWER MACHINE. (Shipbuilding skills ser.) 17min 16-sd-$23.98 1944 Castle 621.9 Guide Produced by US Office of education Shows function and principal parts of power pipe threader; proper use and care of dias and cutting tools; proper lubrication; shows swedging offset and removal by chamfering; and shows how to correct thread that is too large This is No. 3 in the sub-series Pipefltting in the Shipbuilding skills series B&H Rice Calhoun . SuF Dav TexVE Pi VAF $23.98 IdP VES Nay CUTTING KEYWAYS. (Milling machine ser.) *15min 16-sd-$22.11 1942 Castle 621.9 sh-c-trade-adult Demonstrates the operation of a shaper in cutting a keyway in a steel shaft, emphasizes the safety precautions necessary in the operation of this machine, explains the clearance hole at the end of a cut, portrays the selection of the tool and its setting for a given width and depth of cut, shows the correct procedures for securing the work in a table vise, and the selection and procedures used in setting the correct length, position, and the speed of the ram stroke Animation is combined with commentary and closeups of the blueprint show the steps followed when laying off the keyway at the end of a steel shaft. The use of an indicator to check and to make certain that the solid jaw of the table vise is parallel with the stroke of the ram is demonstrated in considerable detail ft CUTTING THREAD WITH TAPS AND DIES. (Bench work ser.) 20min 16-sd-$26.47 1942 Castle 621.9 sh-trade-adult Produced by US Office of education "Shows and explains the methods, operations, and procedures used when cutting small threads with the use of hand taps and dies." Business screen ft 256