The Blue Racer Mechanism is mounted on a Black Wrinkle-Finish Original-Size base. Though several parts are necessary to build-up the bearing support frame they are made up of easy-to-machine round stock, flat sheet metal pieces and screws. The two screws to which the spring is attached control the tension by changing the angle at which the spring pulls. I had actually been through the entire swap and was standing beside a table that I thought I had already looked at. You were using a phonograph and probably couldn't use earphones, so everyone around got annoyed as they had to listen to you as you were learning the code. The local users had the 4 ohm sounders. Read about the next key, the Dow-Key Universal, to find out why.
This helped overcome the issue they had with split dots. Within a few short years, Vibroplex came to represent the best of the telegraphic, and later Amateur Radio, industry. The Cedar Rapids Bug was perhaps the only semi-automatic key that was offered either in assembled form or as a kit, the price difference was minimal. This Speed-X key was found in its original box in unused condition - the two paddles weren't even mounted to the lever. Additionally, the damper support frame was also designed to use easy-to-machine parts.
Bugs on the air The very nature of the Vibroplex mechanical bug key meant that it was not suitable for high current applications. The Clover-leaf also has the dot lever stop mount cast as part of the frame instead of a separate piece as on the Square Frame. The precise machining of the various pieces results in a very smooth rotation when adjusting the sending angle. By the mid-twenties, Black Japan and Nickel bases were offered. Large chips are obvious and also note the cracking on the base and the stress cracks all over the top of the cover. This allowed the connections from the key to the transmitter to be located under the table. Martin continued to work on ideas for semi-automatic bug keys and his development started to pay dividends.
It is by far the rarest of the Vibroplex models. McElroy - World's Champion Telegrapher - has the best information on Ted McElroy. Inspect and adjust the position of the pivot plates. Note also that the tapes are for American Morse. Looking at this key, it appears there might have been a slight delay before Vibroplex went back to black wrinkle. Many early magazine ads show a Warren, Minnesota address along with the Winnipeg address. T he Direct Point-Model X is overly-complicated using a multitude of small parts.
With initial wireless transmissions being spark transmitters, which required high voltages and current levels to be switched, the bug was not suitable for these applications. This was a shrewd move as it meant that virtually all the competition could not circumvent the intellectual property that Martin set out in the patent. The bottom bearing is also the jewel type. That thought goes away as soon as you use it. Lifting the red knob opens the switch.
Owning this beautifully crafted instrument will link you to a great tradition. Unusual that the bug was never used and is still pretty much that way. If a bug is inside, it can't be seen. The reason is because of the longer main spring used. There was a time period from 1932 up to 1941 where Vibroplex never advertised the Blue Racer. One version shown has the upper contact position adjustable.
These couplers appear to be brass tubes about one and a half inches long. Probably dates from the mid-thirties. Albright was successful in obtaining all applicable patents to the Vibroplex if not already assigned to Martin when he purchased the Mecograph Company in 1913. Since the tapes are for American Morse the reproducer should be a sounder and battery combination. It's a stunning key that, if adjusted properly, has a wide-range of sending speed and is comfortable to operate while providing a very precise dot-action.
Its serial number is 218826 dating it to 1961. Never grip the handle - that is, when you are pressing the dot side with a the thumb do not permit the fingers to touch the dash side; likewise, when making a dash do not touch the dot side with the thumb. There is an extra switch circuit to the right. We had our sked on 3. The Vibroplex Company Deluxe Vibroplex Iambic Keyer As electronic keyers became popular, there was an increase in the demand for a keyer mechanism to use with the electronic keyer. Needless to say, this D-L had put up with a lot of abuse over its lifetime. The ends were soldered to allow these ends to be flattened and a hole punched to allow the connections to be made.
I've found several telegraph keys there many times. The base is much smaller than the Original and the mechanism proportions had to be reduced somewhat resulting in a pendulum that is shorter than those found on the larger keys. The arm, being quicker and stronger, make a manipulation easier and more accurate. I was amazed when opening the box I found that the bug was untouched, never used, in mint condition. All of this was to allow the selling price to be somewhat less than an Original or Blue Racer. This is the first Nickel-Plated Round Shaft Vibroplex Model X that I have come across.
He has been able to reconstruct many of the dates of manufacture of the various models of Vibroplex keys which had been lost in the Vibroplex fire. The available adjustments are: Paddle Arm Tension, the force needed to move either of the two levers from side to side. Whilst this helped the situation, it was not a complete answer. The key was from 1961, so the hardware was philips head screws and plastic insulators. Now back the screw off until just the point at which the arm moves freely again- usually it's just a fraction of a degree of screw rotation, or about as fine an adjustment as you can make.