Imatges de pÓgina
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TREATISE

UPON THE

ART OF FLYING,

BY MECHANICAL MEANS,

WITH A

FULL EXPLANATION OF THE NATURAL PRINCIPLES

BY WHICH BIRDS ARE ENABLED TO FLY ;

LIKEWISE

INSTRUCTIONS AND PLANS

FOR MAKING A FLYING CAR WITH WINGS, IN WHICH A MAN MAY
SIT, AND, BY WORKING A SMALL LEVER, CAUSE HIMSELF TO
ASCEND AND SOAR THROUGH THE AIR WITH THE

FACILITY OF A BIRD.

ILLUSTRATED WITH PLATES.

BY THOMAS WALKER,

PORTRAIT PAINTER, HULL.

HULL:

PRINTED BY JOSEPH SIMMONS, AT THE ROCKINGHAM-OFFICE;
AND SOLD BY LONGMAN, HURST, REES, & ORME, LONDON ;

AND BY ALL THE PRINCIPAL BOOKSELLERS IN

TOWN AND COUNTRY.

1810.

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DESCRIPTION OF THE PLATES.

THE SECTION OF THE CAR.

No. 1. a The right wing.-- One of the side rails, upon which the wing must work with two joints to admit of a vertical motion, for no other motion can answer the pur. pose.--cc The two cross bars which hold the side rails toge. ther.--d Half of the tail. The back rib, fixed to the middle of the hinder cross bar, and then brought down to the bottom of the middle rib.-f The middle rib, fixed to the two side rails, and bended down three feet below, te form the bottom of the car. One of the fore ribs, fixed to the fore corner of the car on the right side, and then to the back rib at the bottom.-h The upright lever, fixed into the crank, to move the wings with. The axis for the crank to work upon, which must be placed two feet nine inches below the top edge of the car.-jj Two iron rods two feet nine inches long, to unite the inner ends of the wings to the ends of the crank head.-- Two oblique prongs to be fixed to the back rib, projecting forward, with the points twenty inches asunder, and fifteen inches below the crank when it stands in a level direction. They are to keep extended the fore part of the bottom of the car, so as to admit of room for the crank head to work up and down. The crank, two feet six inches long; this causes the wings to strike up and down, by means of the man working the lever back. wards and forwards.--m The crank head, eighteen inches long.-n The seat for the man to sit upon, fixed to the back rib.- A piece of wood projecting from the middle of the fore cross bar, to which fixed a head made ,of cork-wood, and a number of small cords to be stretched to the two fore ribs, and the prongs at the bottom of the car ; in the same manner cords are to be fixed all round the car, to support the silk which covers the outside.—pp Two joints which fasten the wings to the edge of the car.

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PLAN OF THE CAR.

No. 2. 1111 The shafts of the left wing.-22 The two side rails which form the top edges of the car, and upon which the wings are to be fixed with two joints each.

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