A mechanical timing device for laboratory spraying tests


Material Information

A mechanical timing device for laboratory spraying tests
Physical Description:
2, 3 p. : ill. ; 27 cm.
Carlson, F. W
Yothers, M. A
United States -- Bureau of Entomology and Plant Quarantine
U.S. Department of Agriculture, Bureau of Entomology and Plant Quarantine
Place of Publication:
Washington, D.C
Publication Date:


Subjects / Keywords:
Automatic timers   ( lcsh )
Spraying and dusting in agriculture   ( lcsh )
federal government publication   ( marcgt )
non-fiction   ( marcgt )


General Note:
Caption title.
General Note:
General Note:
"August 1941."
Statement of Responsibility:
by F.W. Carlson and M.A. Yothers.

Record Information

Source Institution:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
aleph - 030350051
oclc - 781855435
System ID:

Full Text

Aiuss 1941


United States Department of Agriculture
Bureau of Entomology and Plant Quarantine


By F. W. Carlsoo 'd A Yothers,
Division of Fruit Ine cI Investigations

In laborator-y tests o r pra2 agal.s
codling moth larvae cocoo, n 7io 1 uce nu
(1-3/8" x 3/16" x 6-3/4") i w i Uog
of time and, the position o' ech ir o si s
In order to make all lots Isyroi i L 'o a possiC,'S
ing device was developed as illustrat and dcribe.

On the base (fig. 1, A) r<' ig 7-5/8"
uprights (C) were built 37" hi r'o rs
were placed beween these ,, p o c / a c
On this hilt, at intersl of ap r Ci, 1 fool
6 heavy tin cleats (G) thold 1
were bcnt in such a way +,0 7 >, c,.es
and hold them against the belt.

1Ju~ K
J -

* A

< t .

Attached to the ma>ia (, ) 'ms ohr )' 1
motor (E), for which h an eiotrio an Lotor s v
removed. O'er this motor a cver () Ia b to "
the sprays On the base ( ) a wor v rD), o ..' .
gear in a "JersL" centi ug, rto > to 1, v7 y
belt with tie motor (E) a wiL V
shaft to turn the rollers an6 revolve the belt (Fn
motor is a 1-1/2" V pulley, on the g Sar shtft t
operates is a 2" V puley, and (b the "orm gear -
the belt to the 10" pulley is a i-I/1 V pulley.

This setup, with the trn ... r at
volves the ] t carrying th sc c r0 of J
for a, revolution, or 5 s-conds each or a
through the spray.

This machine as devoe at tL V ai, Tash.
the co7re of control expe riments, n ,o ,
of the calling moth. The ,it' rs are ce
and John F. Cassidy, now of the E u o1 ic'ilL
and Engineering, for helpful suggestions.

tory in
I, e


s chine was used with a spraying set-up composed of a
1/4-h e ic motor (fig. 2, A), a compressor (B), and a 1-pint
capc pin gun (C). The paint gun was set or held on the
stand ( a ahe same distance each time from the moving objects
being sprayed.

he speerl of the belt carrying the objects to be sprayed
can o s, be readily regulated by changing the speed of the
fan motor and by using a different ratio of pulleys.

List of Materials

1 p x 7-5/8" x 31-1/2" $431/ -- Base
1 p J/' x 7-5/8" x 19" S45 -- Motor base
2 p. /2" x 1-5/8" x 37" 343 -- Uprights
2 p" x 1-5/8" x 7" 343 Brace
1 p x 1-5/8" x 10" 343 cut 450 -- Brace
2 /32" x 1-5/8" x 2-3/4" $4S cut 450 -- Corner braces
] p 71'-?" x 1-5/8" x 8-1/2" 34S -- Base plate
2 p 1-5/8" x 27-1/2" 343 Braces
3 p 35?" x ]-5/8" x 5-1/2" $45 -- Worm gear mounting
1 pzec ..../3 1-5/8" x 1-3/4" $43 -- Worm gear brace
1 pc x 1-5/8" x 4" 343 Brace
2 woo olers 2-1/2" x 6-1/2"
3 lag screw 3/8" x 3"
1 19 cew 1/2" x 4"
1 pi- c 3as -- Belt 6" x 72"
5 me I tion-stick holders -- attached to belt
1 rcncton gear 10 to 1
1 10" V pulley
1 2" V pi,]ley
2 Y-I/22 V pulleys
I V b et 1/-" x 58"
1 V bel 1/2" x 3811
1 5-gal. oil can cut out to cover motor
2 belt guards

1/ Surfaced 4 sides.

ThcechavicaJ Tmoiq evice For Laboratory

5prairqTst5. -

Figure I.-A, Base; B, motor base; C, uprights; D, worm
gear; E, motor; F, canvas belt; G, metal pupation-stick
holders; H, motor cover; I, large pulley.



Figure 2.--omplete timing device (as diagrammed in figure 1)
and spraying set-up. A, Electric motor; B, compressor;
C, paint gun; D, paint-gun stand.

Figure 3.-Mechanical timing device from a different angle
from that shown in figures 1 and 2.


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