Theatre Design & Technology - Spring 1975 - 31

TECHNICAL REPORTS

DA_VI_DH_AL_E&_F_RE_DM_.W_O_LFF

A UNIFORM PLATFORM· WAGON UNIT
RICHARD F. MELD

MT. HOOD COMMUNITY COLLEGE
Drawings and Photographs by the Author

Over the years, I had tried platforms and wagons
using various techniques and materials. Last year I
needed some new platform-wagons for a revolving
setting. I had previously experimented with different
all-wood constructions, slotted angle frames, Unistrut frames, and welded frames. These wagons used
the standard flat-plate castor and fixed wheel. And
they all had disadvantages. What was needed was a
new approach to an old problem. The following
specifications evolved:
WANTED: A Universal Platform (frame): that
could be raised easily to any height; that could be
converted to a scenery wagon (eight inches high);
that could also be a wagon higher than eight inches;
that was built to standardized and compatible
dimensions; that is small enough to handle, store,
and tour (when a single unit); that is easily attached
to other units (preferably from above); that would
last for years of constant use; that would have a
universal wheel mount that would not require
re-drilling when design dictates different direction of
travel; that could be used as a part of any revolve,
jack-knife, or scenery wagon; with nailing strips for
attaching facings other than to plywood edges; with
steel protection for the edges of the plywood top;
whose wheels could be adjusted (aligned) from the
top after assembly; that is easily constructed by
supervised technical students; that does not require
unusual equipment for construction; whose expense
is not unreasonable, considering longer life; and
whose construction would not require excessive time.

stem (using deep socket) is from above. Top
assembly of adjacent units is achieved by means of
an inverted U-clamp of 3/8" steel rod placed into
predrilled holes, Figure 5. Side assembly of adjacent

Figure 4. Fixed wheel with threaded spindle.

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UStl.l(j {;- CL c/.t? rRJ/:: ,.130.:CJ;-·r:.l/;>

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Meeting these specifications resulted in the
platform-wagon unit that is illustrated in the accompanying drawings and photographs:
A UNIVERSAL PLATFORM-WAGON FRAME: It
is built to standardized dimensions, e.g. 4' x 8',2' x
8', 4' x 4', wedge, etc., Figure 1. It is framed with
steel angle-iron which is less expensive than slotted
angle (Unistrut). It uses straight 90 degree cuts for
simple butt joints, Figure 2. It utilizes welded
construction. It requires a flat plate (pre-drilled) at
each corner (and at toggle if desired) for wheel
mounting, Figure 3. It uses a single-threaded stem
for fixed wheel or castor mounting allowing universal
alignment of a fixed-wheel axis (5/8" stem), Figure
4. It uses heavy duty fixed wheels (300 plus pounds
load each). Access to the mounting nut of the wheel

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THEATRE DESIGN AND TECHNOLOGY

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31



Table of Contents for the Digital Edition of Theatre Design & Technology - Spring 1975

Contents
Theatre Design & Technology - Spring 1975 - 1
Theatre Design & Technology - Spring 1975 - 2
Theatre Design & Technology - Spring 1975 - 3
Theatre Design & Technology - Spring 1975 - Contents
Theatre Design & Technology - Spring 1975 - 5
Theatre Design & Technology - Spring 1975 - 6
Theatre Design & Technology - Spring 1975 - 7
Theatre Design & Technology - Spring 1975 - 8
Theatre Design & Technology - Spring 1975 - 9
Theatre Design & Technology - Spring 1975 - 10
Theatre Design & Technology - Spring 1975 - 11
Theatre Design & Technology - Spring 1975 - 12
Theatre Design & Technology - Spring 1975 - 13
Theatre Design & Technology - Spring 1975 - 14
Theatre Design & Technology - Spring 1975 - 15
Theatre Design & Technology - Spring 1975 - 16
Theatre Design & Technology - Spring 1975 - 17
Theatre Design & Technology - Spring 1975 - 18
Theatre Design & Technology - Spring 1975 - 19
Theatre Design & Technology - Spring 1975 - 20
Theatre Design & Technology - Spring 1975 - 21
Theatre Design & Technology - Spring 1975 - 22
Theatre Design & Technology - Spring 1975 - 23
Theatre Design & Technology - Spring 1975 - 24
Theatre Design & Technology - Spring 1975 - 25
Theatre Design & Technology - Spring 1975 - 26
Theatre Design & Technology - Spring 1975 - 27
Theatre Design & Technology - Spring 1975 - 28
Theatre Design & Technology - Spring 1975 - 29
Theatre Design & Technology - Spring 1975 - 30
Theatre Design & Technology - Spring 1975 - 31
Theatre Design & Technology - Spring 1975 - 32
Theatre Design & Technology - Spring 1975 - 33
Theatre Design & Technology - Spring 1975 - 34
Theatre Design & Technology - Spring 1975 - 35
Theatre Design & Technology - Spring 1975 - 36
Theatre Design & Technology - Spring 1975 - 37
Theatre Design & Technology - Spring 1975 - 38
Theatre Design & Technology - Spring 1975 - 39
Theatre Design & Technology - Spring 1975 - 40
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