Kinematics of Mechanisms from the Time of WattFerguson, Eugene S.
History
Kinematics of Mechanisms from the Time of Watt
Ferguson, Eugene S.
Machinery, Kinematics of
One of the very earliest American textbooks of kinematics was the 1883
work of Charles W. MacCord (1836-1915), who had been appointed professor
of mechanical drawing at Stevens Institute of Technology in Hoboken
after serving John Ericsson, designer of the _Monitor_, as chief
draftsman during the Civil War.[110] Based upon the findings of Willis
and Rankine, MacCord's _Kinematics_ came too early to be influenced by
Kennedy's improvements upon Reuleaux's work.
[Footnote 110: A biographical notice and a bibliography of MacCord
appears in _Morton Memorial: A History of the Stevens Institute of
Technology_, Hoboken, 1905, pp. 219-222.]
When the faculty at Washington University in St. Louis introduced in
1885 a curriculum in "dynamic engineering," reflecting a
dissatisfaction with the traditional branches of engineering, kinematics
was a senior subject and was taught from Rankine's _Machinery and
Millwork_.[111]
[Footnote 111: _Transactions of the American Society of Mechanical
Engineers_, 1885-1886, vol. 7, p. 757.]
At Massachusetts Institute of Technology, Peter Schwamb, professor of
machine design, put together in 1885 a set of printed notes on the
kinematics of mechanisms, based on Reuleaux's and Rankine's works. Out
of these notes grew one of the most durable of American textbooks, first
published in 1904.[112] In the first edition of this work, acceleration
was mentioned only once in passing (on p. 4). Velocities in linkages
were determined by orthogonal components transferred from link to link.
Instant centers were used only to determine velocities of various points
on the same link. Angular velocity ratios were frequently noted. In the
third edition, published in 1921, linear and angular accelerations were
defined, but no acceleration analyses were made. Velocity analyses were
altered without essential change. The fourth edition (1930) was
essentially unchanged from the previous one. Treatment of velocity
analysis was improved in the fifth edition (1938) and acceleration
analysis was added. A sixth edition, further revised by Prof. V. L.
Doughtie of the University of Texas, appeared in 1947.
[Footnote 112: Peter Schwamb and Allyne L. Merrill, _Elements of
Mechanism_, New York, 1904. In addition to the work of Reuleaux and
Rankine, the authors acknowledged their use of the publications of
Charles MacCord, Stillman W. Robinson, Thomas W. Goodeve, and William C.
Unwin. For complete titles see the list of selected references.]
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