| OCR Text |
Show Condenser Vernier Leads Over Others Attachment Is Regarded as Superior to Type Now Being Used. Bv H. B. PHELPS There are a great many vernlero now In uae, but the one here described Is superior to the present type In the following ways: It takes up no extra panel space; does not cause the condenser con-denser to turn hard; Is manipulated by a long handle, and la easily constructed. con-structed. The design can be easily adapted to any condenser providing It has metal end plates. This vernier attachment consists of three parts, namely, the haudle. the bearing tube and the rotary plate. The bearing, B, la a piece of brass tubing which should make a good running fit on the condenser abaft and la Just long enough to fit between the dial and the shoulder on the abaft. The handle, C, la a piece of stiff brass with an Insulating Insu-lating knob, soldered to the outer end This Vernier Attachment Can Be Easily Carried Out on Any Condenser Con-denser With Metal End Plates. of the bearing tube, The rotary plate la aotdered to the opposite end of the tube and should be soft copper or aluminum so that when the tube Is In place, the plate can be bent Into exactly ex-actly the light position. In this form, the vernier will turn around with the main condenaer shaft This fact la Dot a serious objection; however. It may be remedied by placing a sheet of mica between the rotary plate and the end plate, allowing a little friction ao aa to keep the rotary plate from moving with the main control. Thla vernier attachment provides a means for the fine variation necessary la close tuning. |
