Year: 1897

page_text: I, JOHN ALBERT ANDERSON, of 3 Gould Street, in the town of Wakefield, county
of Middlesex and State of Massachusetts, United States of America, Machinist,
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:
This invention relates to mechanism intermediate of the pedals and driving shaft
whereby the driving wheel may be operated to a greater advantage and with greater
or less power or speed at the will of the rider, and its speed quickly checked in case
of necessity through the medium of the pedal.
The nature of the invention is fully described below and illustrated in the
accompanying drawing, in which :
Figure 1 is a side elevation of a sufficient portion of a bicycle to illustrate my
invention.
"
Figure 2 is a vertical section taken on line Y, Figure 3, certain of the parts being
shown in elevation.
Figure 3 is a vertical section taken through the driving mechanism on line X,
Figure 2.
Figure 4 is a section in detail taken on line Z, Figure 1.
Figure 5 is an enlarged detail showing the rear end of the brake-rod and its
connection looking from the inner or rear side.
Similar letters of reference indicate corresponding parts:
a and b represent respectively portions of the frame and the driving wheel. d is
the driving shaft, and A is the hub thereon extending up into the flange A' (from
which the spokes extend) and formed into the drum A". B is a sleeve loose on the
hub A and formed with the integral disk or flange B' which extends up to the
drum A" and constitutes with said drum and said flange A' a case for the dogs C,
which are pivoted at C' to the portion B' and are held by the springs C" against
the inner side of the drum A".
A suitable cord or chain 1) has one end secured at D' to the annular ledge B"
formed on the part B', while the opposite end is secured at D" to the segment E
whose shank E is adjustably secured at e to the upright F' pivotally secured at f
o the bracket H extending down from the collar H which is rigidly secured
o the portion a' of the frame. Integral with this upright F' is a forward
extending arm F which is adjustably secured at g to the lever J which supports
he pedal K.
This construction, of course, is duplicated on the opposite side of the wheel.
Pressing down the pedal K swings down the lever J and with it, of course, the
rin F, thus causing the segment E to swing forward so that the cord D imparts
artial rotation to the case B', causing the dogs C to clutch the drum A" and
mpart similar rotation to the hub A and hence to the wheel b. When the pedal
Price Q77

page_text: is relieved from pressure, the case B is returned to its original position in the
ordinary manner by means of the spring-L which connects said case with the
frame, the dogs C slipping back within the drain in the manner common in such
mechanisms. To increase the power, the lever is drawn rearward and readjusted
with relation to 'the arm F, or the shank E-which is the short arm of the lever-
is lowered on the upright F', or both said adjustments may be made. To increase
the speed, the lever J is pushed forward or-the shank E' is raised, or both may ba
done. As will readily be seen, the parts F and J constitute the long arm and the
parts and E, the short arm of an elbow lever, both such arms being adjustable
as to length.
7.
A brake-band consisting preferably of the metallic outside strip P and leather
inside strip 1" extends nearly around the drum A" (Figures 1 and 2). The upper
end of this hand is provided with a rigid socket or end piece P" which is hinged
at to an elbow lever R R which at its joint is loose upon a horizontal stud R"
secured to the inner side of the portion of the frame. The under end of the
brake-band is pivotally secured at to the lower arm R' of the elbow lever or
bell-crank. The end of this arm is pivotally, secured at t to the portion U. of. the
brake-rod, such portion being connected with the portion ¡U by a turn-buckle V.
The portion U of the brakerod is provided with a slot U" whereby it is engaged
by the pin T. extending from the upright above described. The ordinary
downward stroke of the pedal does not cause this pin to reach the rear end of the
slot U". Should the rider desire however as in the case of danger to apply
the brake to the machine, he can do so instantly by lengthening the downward stroke
of the pedal so that the lost motion is taken up, and the pin T strikes the rear end
of the slot U" and draws forward the brake-rod U, U', thus applying the brake-
band P to the drum A".
Thus the brake may be applied instantly without using the hand, the power
being rendered greater by reason of the bell-crank R R whose arms are connected
as above described with the opposite ends of the brake-band.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. In a bicycle of the character described, in combination, a drum enclosing the
mechanism for imparting motion to the wheel; a brake-band disposed
around said drum; a lever actuated by the pedal and pivotally secured
to the frame of the machine; a driving connection intermediate, of
and connecting said lever and drum; and a brake-rod connected at
one end with the band-brake and at the other end by means of a slotted connection
with the pedal-lever, whereby a lengthened stroke of said lever will apply the
brake, substantially as described.
2. In a bicycle of the character described, in combination, the frame; driving-
shaft hub provided with the flange A' and drum A"; the clutching mechanism
adapted to engage said drum; the band-brake P disposed around the drum; the
swinging segment E provided with the shank E'; the pedal lever F F pivotally
secured to the frame and supporting said segment and shank; the brake-rod
connected at one end with the ends of the band-brake and slotted at the other end;
and a pin or bolt extending from the portion F' of said lever into said slot,
substantially as set forth.
3. In a bicycle of the character described, in combination, the frame; driving-
shaft hub provided with the flange A' and drum A"; the clutching mechanism
adapted to engage said drum; the band-brake 1 disposed around the drum; the
swinging segment E provided with the shank E'; the pedal lever F F' pivotally
secured to the frame and supporting said segment and shank the bell-crank R. R
pivotally secured to the frame of the machine and having its arms pivotally con-
nected with the opposite ends of the band-brake; and a brake-rod secured at one

page_text: end to one arm of the bell-crank and at the other end by means of a slotted
connection with the pedal lever, substantially as described.
Jated this Sixth day of April 1897.
JOHN ALBERT ANDERSON.
Haseltine, Lake & Co.,
45 Southampton Buildings, W.C., Agents for the Applicant.