CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS FOR PRESSING, ROLLING, OR SHAPING METALLIC ARTICLES OF IRREGULAR FORM
Year: 1864

page_text: PROVISIONAL SPECIFICATION left by John Lacey Davies at the Office
of the Commissioners of Patents, with his Petition, on the 29th October
1864. A communication from abroad by Edward MoNally, residing
at Elberfeld, in the Kingdom of Prussia.
I, JOHN LACEY DAVIES, of 4, St. Ann's Square, Manchester, in the County
of Lancaster, Patent Agent, do hereby declare the nature of the said Invention
for "CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS FOR PRESSING, ROLLING,
OR SHAPING METALLIC ARTICLES OF IRREGULAR FORM," (a communication to me
from abroad by Edward M*Nally, residing at Elberfeld, in the Kingdom of
Prussia,) to be as follows:-
The Invention relates to a novel method and an improved arrangement of
mechanism designed for the purpose of rolling and shaping metallic articles of
irregular and especially tapering form, such as spindles, skewers, file blanks,
and other similar articles. The object is effected by increasing or diminishing
the pressure of revolving rollers acting upon the metal during the process of
formation.
The first part of these improvements is more particularly applicable to the
formation of flat surfaces, such as "file blanks," and consists in an arrange-
ment of rollers supported between bearings, the upper two of which are
duplicates and of irregular diameters made to suit different thicknesses of
metal. The top roller revolves in fixed bearings and the under or second
roller bears or rests upon the periphery of a pattern wheel or cam, and is so
caused to rise or fall according to the pattern or undulations formed in such

page_text: wheel, thereby causing a gradually increasing or diminishing pressure to be
given by the rollers to the metal submitted to their action. These rollers are
driven by suitable gearing in connection with a clutch box, and the shaft of
the top roller extends beyond its bearings in the uprights to which the said
driving wheels and clutch are secured. One of these wheels gears into and
drives a wheel secured on the pattern or cam shaft, which gives, as such pattern
wheel revolves, the necessary rise and fall to the under or pressure roller
required to form or taper the metal under operation. The outer surface of
the wheel secured on the pattern wheel shaft is provided with adjustable pro-
jections or tappets which are caused at required intervals (that is, when each
separate article submitted to the action of the rollers. has passed between
them), to come into contact with a spring lever and cam actuating the clutch,
whereby the machine is stopped by self-acting means. The machine can also
be set in motion by a foot lever in connection with the aforesaid cam and
spring, throwing the clutch in and out of
gear.
The second part of this Invention is more particularly applicable to the
formation of round articles such as round "file blanks," spindles, or similar
pieces of metal requiring a gradually tapering extremity. The bars of metal to
be formed or shaped are secured by clips to conical wedges, which are actuated
by screw shafts which are retained in position by a cross head and projecting
arms secured to the uprights of the aforesaid pressuro rollers. These
screw shafts are caused to revolve by suitable mitre gearing, by which
aneans the cross head and driving gear are caused gradually to advance or
slide upon the said projecting arm, thereby causing the revolving clips
retaining the piece of metal to force it whilst revolving between the
pressure rollers, thereby pressing, rolling, or forming it into the shape
required.