IMPROVEMENTS IN THE MANUFACTURE OF GEAR WHEELS
Year: 1876

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for the Invention of
"IMPROVEMENTS IN THE MANUFACTURE OF GEAR WHEELS." A communi-
cation from abroad by John Comly, of Lincoln Park, New Jersey, United
States of America.
4
Sealed the 11th August 1876, and dated the 19th June 1876.
COMPLETE SPECIFICATION filed by the said William Robert Lake at the
Office of the Commissioners of Patents on the 19th June 1876.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN THE MANUFACTURE OF
GEAR WHEELS." A communication from abroad by John Comly, of Lincoln Park,
New Jersey, United States of America.
This Invention relates to the combination of a circular die with a blank wheel
placed on a mandrel in such a manner that as the die is revolved by suitable
mechanism it forms teeth on the wheel as the latter is caused to revolve by the
revolution of the die. The teeth are made for spur, bevil, or any other desired form
of gearing by constructing the teeth of the die of corresponding form.
The blank wheel, before being placed on the mandrel, is brought to a red heat to
give practibility to the perfect formation of the teeth. There is a water trough
connected with the lower edge of the dic for the purpose of cooling its teeth after
they pass the hot wheel successively.
Instead of the die being of circular form, as above-mentioned, it may be of any
other desired shape, and operated by any suitable mechanism.
In the accompanying Drawing, which makes a part of this Specification, Figure 1
is a front elevation of the frame D, cooling trough F, revolving die A, and wheel B;
Figure 2 is a vertical section on the line a, b, of Figure 1. Like letters of reference
in both Figures indicate the same parts.
A represents a circular die having zig-zag teeth a on its periphery for pressing
into shape teeth 6 on the periphery of the wheel B as the two wheels are caused to
revolve by power applied to the shaft C of the die by means of a crank or other-
wiso, the journals of the shaft being supported by the frame D and those of the
mandrel Ĕ, on which the wheel B is placed, by any suitable means. The wheel or
disc B is brought to a red heat before it is brought into position, as shown in the
Pains A

page_text: Drawing, to admit of the teeth a of the die A pressing easily into its periphery, and
forming the teeth b. The die is cooled as its revolves by its under edge running in
the water trough F.
It will readily appear that any form of teeth may be constructed in the manner
above described by making the teeth of the die A of the required form and that
the teeth of the wheels in consequence of being greatly condensed by the action of
the die will be much stronger than when formed by a cutting machine or in the
casting.
I do not confine myself to the circular shape of the die A, but make it of any
desirable shape, and operate it by any suitable mechanism.
What I claim as my Invention, and desire to secure by Letters Patent is, the
combination of the die A of circular or other shape, blank wheel B, mandrel E, and
water trough F, substantially in the manner and for the purpose set forth.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Nineteenth day of June, in the year of our Lord One
thousand eight hundred and seventy-six.
Witness,
LEWIS SANDERSON,
8, Southampton Bdgs.,
London.
WM. ROBT, LAKE. (L.S.)