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Bracelet holding fixture guillochet ornamental turning
Antique Bangle Bracelet,Cylindrical Type Holding Fixture
Finance Equipment (With a Value over $2000.00) For
Technical Data:...* Antique Bangle Bracelet,Cylindrical Type Holding Fixture With Adjustable Holding Jaws for Use On Charles Field Rotary Engine Turning Machines
* Minimum Holding Diameter : 2-3/8" With Present Jaws
* Maximum Holding Diameter : 2-5/8" With Present Jaws
* Minimum Holding Width : 1/4" With Present Jaws
* Maximum Holding Width : 7/8"
* ** Note : This Fits Charles Field Rotary Engine Turning Machines & Possibly Others
* Condition : As Received ,Complete and in Good Working Condition.
Contact Cliff Davis toll-free at 800.619.GOLD during normal business hours (EST) or by email at ****@goldmachinery.com, referencing Bangle bracelet attachment
The machine that this attachment is used with has been utilized for centuries to decorate & pattern such items as Jewelry, Pendants, Coins, Medallions, Cigarette Lighters and Cases, Pillboxes, Cigar Cutters, Pens, Tubes, Silverware, Trays, Goblets, Clocks, Wristwatches, Watch Cases, Pocketwatches, Faberge Eggs, Metal Boxes, Wood Boxes, Compacts, Guns, Frames, Coasters, Padlocks, Hearts, Lockets, Cufflinks, Buttons and much much more!!!
Engine Turning, in French: "Guilloch ", is really a branch of what the English call Ornamental or Complex Turning. It is a process in which metal/wood/ivory etc workpieces are moved mechanically against a fixed tool to cut a series of uniformly defined lines. It is akin to engraving with a ruler, or technical drawing on metal/wood/ivory, though it does not look like technical drawing, rather a decorative surface which reflects light in an interesting way and has a tactile value as well.
Engine Turning is really a simple process from the designer's point of view. You cut wavy or straight lines on a surface exactly where you want them and in whatever direction or position you like. There are machines to cut wavy circular lines or even ellipses using waves. Any flat or convex surface can be engine turned as well as some concave surfaces. There are a few restrictions with 3D surfaces but in general you can do almost anything, hence the technical drawing analogy.
Figure 1: Using the ratchet on the sliderest we can move the tool a little to the right at a time to achieve a series of parallel cuts...
Figures 2 & 3: The Basic Pattern. What you get with repeated parallel cuts and no vertical relative movement of the pattern bar between cuts. Notice that since it is the work that moves the tool traces a mirror image of the pattern bar, modified by the radius of the roundness of the end of the touch sliding along the pattern bar.
Figure 4: Zig zag moves, 5 up and 5 down about 0.5mm each on the crossing slide. The Pattern Bar was moved once after each cut vertically in relation to the rest of the machine
Figure 5: A moir made by reducing the vertical move at each end of the zig-zag
Figure 6: The Pattern Bar and a Single Touch used with it
Figure 7: A pattern sample being cut for a picture frame. Our suggestion was this pattern of double zig zag lines crossed to give low lozenge shaped pyramids. The top of each pyramid was opened up and cut into a tiny concave pyramid for setting a very small diamond with a grain at each corner. This left a good deal of metal between each stone but presented a very attractive design.
Figure 8: The engine turned clock case ready for polishing. The original blank sheet of metal for this case would have also been scored for the boxmaker to fold and solder, using a straight line machine.
Click here for representation of schematics and concepts in Engine Turning and Ornamental Turning. Further machine information may be found on goldmachinery.com by searching for Brohen Straight Line Machine.
Also recommended: and (International Society of Ornamental Turners - UK). You'll find both sites informative, and discover the many uses for engine turning machines.
