Year: 1886

page_text: Date of Application, 20th Dec., 1886.
Complete Left, 22nd Aug., 1887.
Complete Accepted, 30th Sept., 1887.
RES
I CHARLES CRAWFORD ANDERSON of Montegut P.O. State of Louisiana, United
States of America, Overseer U. S. Dredge-boat, do hereby declare the nature of this
invention to be as follows:-
My Invention relates to an improvement in tricycles and has for its object to effect
an increase in the speed thereof. It consists in transinitting rotary motion from the
treadle to the driving axle through the intervention of cross grooved discs keyed on
the treadle shaft and having sliding blocks in their grooves to which are pivoted
connecting rods attached to the cranks of the driving axle. It also consists in the
details of construction of the frame and steering bar, as will be hereinafter fully
set forth.
The frame consists of said side bars which extend forward and downwards from the
bearings of the driving axle in the form of a reverse curve and are then rounded
inwards towards and are united at the centre in front, forming a reinforced eyo at
their point of unity in which the steering wheel fork is pivoted. These side bars
also extend rearwards from the driving axle in an upwardly curved direction their
ends being vertical and connected by a cross bar which completes the outer frame of
the tricycle.
Extending from and secured to the cross-bar one upon each side, and within the
frame are brace bars which are united to the side bars of the frame in front by means
of a rearwardly curved cross-bar which forms a guide for the steering bar.
In these brace bars is journalled the treadle shaft having cranks provided with
proper foot treadles and carrying upon each end outside the said brace bars and
between them and the outer frame a diametrically cross grooved disc keyed thereto.
Adapted to slide in the grooves of each disc are blocks which are connected to the
cranks of the driving axle by connecting rods, the disc slide blocks and connecting
rod resembling the instrument known as a trammel.
The diametrically grooved discs are twice the circumference of the circle described
by the revolution of the cranks of the driving axle and thus I obtain two revolutions
of the main crank axle and consequently two revolutions of the driving wheels for
every revolution of the grooved discs and treadle shaft.

page_text: Upon a cross brace extending from the one brace bar to the other is affixed a seat
for the rider.
The small front steering wheel is journalled in a vertical fork having a vertical
pivot journalled in the eye of the main frame as before mentioned. From the bearings
of the steering wheel extend the limbs of a forked steering bar which terminates in
an eye that slides upon and is guided by the curved cross bar before mentioned.
The eye of the forked steering bar is provided with a ring or staple from which
wires extend along the guide bar towards each side and along the brace bars to a
drum operated by the right hand of the rider in the usual manner.
By turning the drum the steering bar is caused by the wires to travel either to
the right or left along the curved guide bar, the steering wheel being guided
accordingly.
Dated this 20th day of December 1886.
C. C. ANDERSON.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: I, CHARLES CRAWFORD ANDERSON of Montegut P.O. State of Louisiana, United
States of America, Overseer United States Dredge Boat do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:—
My Invention relates to an improvement in Tricycles, and has for its object to effect
an increase in the speed thereof.
It consists in transmitting rotary motion from the treadle to the driving axle through
the intervention of cross-grooved discs keyed on the treadle shaft and having sliding
blocks in their grooves to which are pivoted connecting rods attached to the cranks
of the driving axle. It also consists in the details of construction of the frame and
steering bar, as will be hereinafter fully set forth and claimed.
Reference is to be had to the accompanying drawings forming a part of this
specification in which figure 1 is a side elevation of my tricycle with a wheel removed
and one side of the frame cut away; Figure 2 is a plan view thereof and figure 3
is a detail view illustrating the connection of the grooved wheel with the axle crank
shait and indicating in dotted lines a partial revolution thereof.
Similar letters of reference indicate corresponding parts in all the figures..
The tricycle is provided with two large drive wheels A A of the ordinary construc-
tion secured to an axle crank shaft a journaled in the side bars B of the frame. This
frame consists of said side bars B which extend forwards and downwards from the
bearings of the driving axle a in the form of a reverse curve and are then rounded
inwards towards and are united at the centre in front, forming a reinforced eye a¹ at
their point of unity in which the steering wheel fork is pivoted. These side bars B
also extend rearwards from the driving axle in an upwardly curved direction their
ends being. vertical and connected by a cross-bar b which completes the outer frame
of the tricycle.
Extending from and secured to the cross-bar bone upon each side and within the
frame are brace bars ce which are united to the side bars B of the frame in front by
means of a rearwardly curved cross bar D which forms a guide for the steering bar.
Journalled in these brace bars c c is a shaft E having cranks e e therein provided with
proper foot treadles e¹ and carrying upon each end outside the said brace bars c c
between them and the outer frame, a diametrically cross grooved disc F keyed thereto.
Adapted to slide in the grooves of each disc F are blocks ff which are connected
to the cranks g g of the driving axle a outside the brace bars cc by connecting
rods H.
The diametrically grooved discs are twice the circumference of the circle described
by the revolution of the cranks g of the driving axle a and thus I obtain two revolu-
tions of the main crank axle a and consequently two revolutions of the driving

page_text: wheels A for every revolution of the grooved discs and treadle shaft. This I illustrate
in part in figure 3 of the drawings, the dotted lines shewing that whilst the grooved
disc F makes an eighth of a turn, the crank g will make a quarter revolution.
Upon a cross brace W, extending from the one brace bar c to the other, is affixed
a seat S for the rider in such position as that the treadled cranks e upon the shaft E
can be operated by the feet of the person seated thereon without trouble. The small
front steering wheel A' is journaled in a vertical fork m having a vertical pivot o
journaled in the eye a¹ of the main frame B as before mentioned. From the bearings
of the steering wheel, extend the limbs m² of a forked steering bar L which terminates
in an eye that slides upon and is guided by the curved cross-bar D before mentioned.
The eye of the forked steering bar L is provided with a ring or staple from which
wires extend along the guide bar D towards each side and along the brace bars c to
a drum Z operated by the right hand of the rider in the usual manner. A band-
hold is provided upon the left hand brace bar, to be grasped by the rider's left
hand. By turning the drum Z, the steering bar L is caused by the wires to travel
either to the right or left along the curved guide bar D, the steering wheel A' being
guided accordingly.
Should the driving wheels be five feet in diameter the one revolution of the treadle
shaft E will propel the tricycle thirty feet. Thus I am enabled to attain greater
speed than has been attained heretofore without expending much more power.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed, I declare that what I claim is ;
1. In a tricycle or similar vehicle constructed with side bars B having cross bar b
and a main crank shaft a journaled in said side bars, in combination with the grooved
wheels F keyed to a treadled crank shaft E journaled in the brace bars e adapted to
operate the cranks g of the main shaft a by the pivoted sliding blocks and
connecting rods H, substantially as shewn and described and for the purpose herein
set forth.
2. In a tricycle, the combination with the frame thereof consisting of side bars B
and cross piece b, of a guide bar L having two U-shaped arms m m¹ adapted to
straddle the guide wheel A¹ and form a bearing for its axle, the said guide bar L
pivoted to the intersecting side bars B by the pivot pin o upon the arm m and adapted
to slide upon a guide rod D connected with the said frame by means of the eye r
formed in its end, substantially as shown and described, and for the purpose herein
set forth.
Dated th: 10th day of August 1007