MANIPULATORS, ETC. 
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the inside of the rows of plants between which the machine passes. To 
obviate this drawback, Mr. Ewing suggests the attaching to each side 
of the frame another light frame of wire rods or cane, reaching above 
the tops of the plants, thence down again to near the ground, and there 
carrying a canvas which is likewise smeared with tar. 
u Two other machiues, though originally intended for clearing potato- 
vines of their insect enemies, deserve notice here. 
The Woi d- Smith Tray Sweeper. — " The first of these was patented by 
Messrs. (1. W. Wood ami Charles II. Smith, of Faribault, Minn., in So. 
21417S (1.S70), and consists of an apparatus mounted on wheels, whieh 
is drawn between the rows of plants, and by suitably shaped wings 
gathers the plants into a bunch and shakes them, thereby shaking off 
the larva* into a receptacle from which they cannot escape. The parts 
of the apparatus are adjustable to suit the height of the plants. 
M In Plate LIX Fig. G is a plan of the apparatus : Fig. 8 is a longi- 
tudinal section at the line, x x\ Fig. 7 is a cross-section at the line, 
y y- 
" Similar Let ten of refereuce indicate corresponding parts, a a are vertical stand- 
ards, connected together by a cross-bar, 6, at their upper ends, c c are wheels 
mounted on short axles fitted in the boxes, d, at the lower ends of standards, a. 
"The standards a are at such a distance apart that the wheels, c, will run between 
the rows of plants and two rows of plants be between the wheels. 
u The cross-bar, b, is made in two pieces, us shown, connected together by screws, so 
that the bar can be adjusted according to the w idth of the rows c e are wings, one 
at ca di side of t In; apparatus. The forward ends of the w ings are attached to the 
standards, a, and t heir rear ends are connected together at the center line of the ma- 
chine. These wings, c. are of suitable width, and they are attached with their edges 
vertical at the forward end, and are twisted so as to lie flat where they arec nnected 
together at the rear end. /is a pan-shaped receptacle, attached by arms, f, to a bar. 
h, that is suspended from har, h, midway between the w heels, o. i is ■ vertical rod 
rising from the tear end of the receptacle, /, and passing through a hole in the ends 
of wings, < . 
u The upper end of rod. i, is provided with a handle, k, by which the rear end of the 
machine may be managed. There are holes in rod. /. into whichjuns, / /, may be in- 
serted to retain the rear ends of the wings, r, at the desired heigh:, according to the 
growth of the plants. The strips, m. that form the sides of the receptacle, /, are piv- 
oted by pins, />, at one end, so that the receptacle can he made wider or the reverse, 
according to the w i ith of the rows 
"At the inner side of the wings, e, and projecting over the receptacle, are flappers, o o, 
hinged at /*. Kach of these dappers has a rod, <j, passing t h rough the wing that the dap- 
per is hinged to, and connected with a crank-lever, r, hung at the outside of the wing. 
# is a lever fulcrumed at the forward end of the wing in such position that one end of 
the lever is acted upon by the teeth, t, attached to the inner side of the wheel, c. The 
other end of the lever is connected by a strap, a, that passes beneath a roller, r, to a 
rod, w, that is attached to crank-lever, x ; y is a spring connected to lever, w, and to 
the wing, e. The teeth, t, depress the lever, 8, and draw upon the crank-lever, ?•, and 
spring, y, and draw the flapper outward ; but as soon as the lever, 8, clears the tooth 
the flapper springs out quickly. The arrangement is the same on both flappers, o, 
and by that means a series of rapid blows are given upon plauts gathered by the 
wings. 
"A horse is to be attached to the whiffletree, a', that is hung on bar, h. The horse 
will walk between the rows of plants that are to be operated upon by the apparatus, 
