A Combined Tachometer and Odometer.
Year: 1894

page_text: Date of Application, 7th Mar., 1894
Complete Specification Left, 29th Nov., 1894-Accepted, 29th Dec., 1894
PROVISIONAL SPECIFICATION.
A Combined Tachometer and Odometer.
I EDUARD BUTIKOFER, Manager, of Seevorstadt 21, Biel, in the Republic of
Switzerland, do hereby declare the nature of this invention to be as follows:
11
This invention has for its object a combined tachometer and odometer for all
kinds of vehicles, principally for velocipedes, which indicates at every moment the
velocity of the vehicle to which it is adapted as well as the distance travelled
by it.
In the accompanying sheet of illustrative drawings, Figs. 1-3 show one
arrangement of this apparatus.
The apparatus for measuring the velocity (tachometer) as well as the apparatus
for measuring the distance (odometer) are both placed in a box a and actuated by
the same driving shaft b. A toothed wheel c mounted on this shaft drives a toothed
wheel d provided with a pin e which transmits the motion by the wheel
wheel worm and wheel k to the pointer which indicates on a dial m the distance
travelled by the vehicle.
worm g
The measurement of the velocity is also effected by the driving shaft 6 driving
the toothed wheel d to which is adapted an anchor n which catches, when rotating,
the anchor wheel o. On the shaft p of this anchor wheel is fixed, under the action
of a spring 9, a cam shaped disc s joined to the spring 9 by a string t. This string t
winds itself up on the disc s when the wheel o rotates, for instance, in the direction
of the hands of a watch which happens as soon as the vehicle is set in motion. On
the shaft p is also fixed the pointer u which indicates on the same dial m the
velocity of the vehicle: The anchor wheel o is driven by the anchor n or left
behind, the pointer u being rotated in one direction or the other according as the
inertia of the anchor n or the action of the spring y predominates. As soon as the
vehicle is stopped the anchor wheel o is brought by the spring y back to its position.
of rest and the pointer u returns to its zero position.
9.
The regulation of the apparatus may be attained in different ways for example,
by choosing a spring 9 of suitable strength, by choosing a cam shaped disc of
suitable dimensions, or by choosing an anchor of greater or less weight provided
with balance weights capable of being shifted, or by using several of these
means at the same time.
Dated this 7th day of March 1894.
A Combined Tachometer and Odometer.
I EDUARD BÜTikofer, `Manager, of Seevorstadt 21, Biel, in the Republic of
Switzerland, 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 has for its object a combined tachometer and odometer for all

page_text: kinds of vehicles principally for velocipedes which indicates at every moment the
velocity of the vehicle to which it is adapted as well as the distance travelled
by it.
Referring to the drawings filed with the Provisional Specification, Figs. 1-3
show one arrangement of the apparatus.
The apparatus for measuring the velocity (tachometer) as well as the apparatus
for measuring the distance (odometer) are both placed in a box a and actuated by
the same driving shaft b. A toothed wheel c mounted on this shaft drives a toothed
wheel d provided with a pine which transmits the motion by the wheel worm g
wheelworm i and wheel k to the pointer which indicates on a dial m the
distance travelled by the vehicle.
The measurement of the velocity is also effected by the driving shaft 6 driving
the toothed wheel d to which is adapted an anchor n which catches when rotating
the anchor wheel o. On the shaft p of this anchor wheel is fixed under the action
of a spring g, a cam shaped disc s joined to the spring 9 by a string t. This string t
winds itself up on the disc s when the wheel o rotates for instance in the direction
of the hands of a watch which happens as soon as the vehicle is set in motion. On
the shaft p is also fixed the pointer u which indicates on the same dial m the
velocity of the vehicle. The anchor wheel o is driven by the anchor n or left
behind, the pointer u being rotated in one direction or the other according as the
inertia of the anchor n or the action of the spring q predominates. As soon as the
vehicle is stopped the anchor wheel o is brought by the spring q back to its position
of rest and the pointer u returns to its zero position.
The regulation of the apparatus may be attained in different ways for example
by choosing a spring 9 of suitable strength, by choosing a cam shaped disc of
suitable dimensions, or by choosing an anchor of greater or less weight provided
with balance weights vv capable of being shifted or by using several of these
means at the same time.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is :-
1. A combined tachometer and odometer for all kinds of vehicles principally for
velocipedes characterised by a common pair of wheels communicating the movement
from the driving shaft, and by a common dial plate for both kinds of measurements
substantially as described.
2. In the combined tachometer and odometer claimed by Claim 1 a construction
of the tachometer characterised by an anchor wheel adapted under the action of
a spring, and by an anchor adapted eccentrically on a concentrically turnable disc
substantially as described.
3. The arrangement and construction of a combined tachometer and odometer
substantially as described with reference to the drawings hereunto annexed.
Dated this 29th day of November 1894.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.