A New or Improved Self Setting Ratchet and Clutch Device for Starting Tram Cars, Trucks, and other Vehicles.
Year: 1888

page_text: Date of Application, 21st Sept., 1888
Complete Specification Left, 21st June, 1889-Accepted. 27th July. 1889
PROVISIONAL SPECIFICATION.
A New or Improved Self Setting Ratchet and Clutch Device for
Starting Tram Cars, Trucks, and other Vehicles.
HENRY THOMSON Engineer Buckden Huntingdonshire 20th day of September 1888
do hereby declare the nature of this invention to be as follows
:-
My invention consists of a ratchet wheel secured firmly to axle or road wheel.
Also a quadrant lever The axle to pass through one end of the said lever. The other
end to be a quadrant or circular bearing for draught, chain or strap to work on, the
same to be connected with lever. The lever to be sufficently ballanced to reset ratchet
when the strain of draught is taken off. A clutch catch to be attached to lever to
work ratchet wheel.
The object of my invention is to take off the usual strain in starting heavily laiden
veicles.
· תני
1001 1
1
1000
COMPLETE SPECIFICATION.
A New or Improved Self Setting Ratchet and Clutch Device for
Starting Tram Cars, Trucks, and other Vehicles.
I, HENRY THOMSON, "Engineer" of Buckden, in the County of Huntingdonshire,
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 a new or improved self setting ratchet and clutch device
for starting tram cars, trucks, and other vehicles, constructed of metallic substances.
My invention consists of a ratchet wheel secured firmly to the axle or road wheel,
also a quadrant lever; the axle to pass through one end of the lever, and the other
end to be a quadrant or circular bearing for draught chain or strap to work the
same, and to be connected with the lever. The lever to be sufficiently balanced to
reset itself when the strain of draught is taken off. A clutch catch is attached to the
lever to work the ratchet wheel.
The object of my invention is to take off the usual strain in starting heavily laden
vehicles.
And in order that my invention may be thoroughly understood, I now proceed to
describe the accompanying drawings thereof, reference being had to letters and figures
marked thereon.
Figure 1, represents a plan of a portion of the body of a tram car A. The ratchet
wheel G is keyed by the key J, to the axle I, with the quadrant E to work freely on
the axle.
The weight F, and clutch ratchet N to be balanced to permit the quadrant to
reset itself when the draught strain is removed from the draw bar V. The axles are
connected together by an endless chain Q working over the spiked wheels P keyed to
the axles. The chain D or C is released by the driver pressing down the lever S at
the point R, the draw bar being forced back by the spring W, at either end of the car,
when the car stops to start again.
The ratchet wheel G which sets the axle and wheels B in motion by the movement
of the horses attached to the car.
The endless chain Q working over the spiked wheels P, P, of each axle, acts on all
four wheels of the car.
D237

page_text: Figure 2, is an enlarged view of a.portion of the top part of the quadrant E with
the chain D passing over the bars or flat surface, the bars or flat surface being above
the ratchet wheel G.
Figure 3, denotes half elevation, and half in section of the apparatus on the
rail M.
The ratchet wheel G is keyed to the axle I by the key J in the centre of the
same; or otherwise, with the sides of the quadrant E, being passed on the axle, and
work thereon loosely and sufficiently balanced by the weight F to permit the
quadrant E, to reset itself by the clutch or pall N dropping in between the teeth of the
wheel G. The chain being attached to the quadrant on the bar K, and connected to
the draw bar V, in front of the driver to start the vehicle.
The quadrant is constructed with two sides E with circular bars E' rivetted up
together, or the whole cast in one piece. The weight is hung on the bar K, and
the catch on the bar O. The draw bar V is provided with a balance catch S
which drops into a slot in the draw bar when the car is started, to fix the same,
and is released by the spring W when the driver 'presses down the other end of
the lever by a rod R to raise the catch out of the slot in the draw bar.
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 :-
First: The combination of the apparatus and self setting ratchet and clutch for
starting tram cars, trucks, or any other vehicles, to take the strain off the beasts
when starting the vehicle, substantially as herein described and according to the
accompanying drawings.
Secondly: The combination of the apparatus as in figure 1, with the endless chain Q
running over the spiked wheels P on the axles, and the quadrant E, with the
weight F and pall N, to clutch the ratchet wheel G, and the chain Cor D attached
to the bar K to work the apparatus when the horses set the same in motion,
substantially as herein described and according to the accompanying drawings.
:
Thirdly I claim to make the apparatus any size and to modify the same to suit
any vehicle, substantially as described.
Dated this 21st day of June 1889.
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.