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Title: |
1878 Ad-Ferris & Miles, Screw Cutting Lathe |
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Source: |
Ferris & Miles 1878 Catalogue, pg. 6 |
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Insert Date: |
4/29/2017 1:40:08 PM |
PATENTED SCREW CUTTING LATHES.
These Machines, of which the out on the receding page is a correct illustration, are arranged with our patented screw cutting gear to cut 16 dilferent screw threads, and also to effect 16 changes of feed for turning; making 32 separate traverses without any changing of gear wheels.
AN INDEX STUD figured for 16 screw threads carries a sliding arm and clamp. When this is set at any figure of the index, the intermediate gear upon the sliding arm will mesh with the proper wheel on the lead screw to cut the thread indicated by the index figure on the stud.
THE WHEELS AND INDEX are, unless otherwise ordered, made for the American standard threads, from 2 per inch to 14 per inch, but can, of course, be made for any other threads that may he required.
THE SCREW is reserved for screw cutting only. The traverse and crow feed motions are driven by a train of gears into the rack on the bed.
THE CONE has 4 changes for 2½-inch belt, and fitted with powerful back gear, so calculated as to give a regular gradation of speeds.
The CARRIAGE is made with extra long bearings on the shears, and also on the cross slides. It is fitted with a substantial compound tool rest, and also with AUTOMATIC CROSS FEED GEAR.
The backward and forward traverse of the carriage, and also of the automatic cross feed, is applied and reversed by a single motion of a convenient handle.
THE SLIDING HEAD SPINDLE is clamped perfectly true and central by an improved conical binder.
US Patent: 111,859
http://datamp.org/patents/displayPatent.php?number=111859&typeCode=0 |
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1878 Ferris & Miles, Screw Cutting Lathe
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