Year: 1888

page_text: Date of Application, 11th June, 1888
Complete Specification Left, 7th Jan, 1889
Complete Specification Accepted, 16th Feb, 1889
1 JOSEPH YATES, of 30A Pimlico Road London, SW Engineer, do hereby declare
the nature of this invention to be as follows
I arrange the draw bar to be moved out by the draught and to return to its normal
position by spring to the draw-bar is pivotted one end of a lever, the other end of
which is held on axle of wheels by an eye, pivotted on lever is a pawl which engages
a ratchet-wheel keyed on axle A spring connection is made from the draw-bar to
the pawl, to lift the pawl out of action when the draught is on
Near end of draw
bar, where it is connected to lever is a projection which engages one on pawl to lift
the latter free of the ratchet when the draw bar is back but which enables the pawl
to fall upon ratchet on the draught being applied The draught may be applied to
the draw bar direct, or to a pivotted lever to which the draw can be attached
Dated the 11th dow of June 1888
FREDERIC PRINCE,
Agent for Applicant

page_text: I, JOSEPH YATES, of 30A Pimlico Road, London, SW, Engineer, 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
The invention refers to a device to enable the draught of the horse or horses to
exercise a compound or increased draught on the vehicle To enable my said
invention to be properly understood, I will proceed to describe the same with aid of
the accompanying drawing which is a partial vertical longitudinal central section of
the lower part of a tramcar showing my invention applied thereto
A, is the foundation frame of car, B, an extensible draw bar swivelled at C, to a
second part D Both ends of the car are similar, and fitted with the same kind of
drawbar, the two drawbars are connected together centrally by a spiral spring E,
to keep them drawn in when the draught is taken off To prevent the bar being
drawn out too far, it is provided with a stop F On the axles of the car preferably
in the middle, is keyed a ratchet wheel G, and on each side of ratchet wheel, loose on
axle, are lever arms H, held together by distance bolts H³, these lever arms are
connected to the end of part D, of drawbar by a cross bolt or pin I, passing through
an eye J, on the underside of bar Between the lever arms, is a pivotted pawl K,
arranged to engage ratchet wheels G, and on the draught being applied a leverage
equal to the length of the lever arms H, is applied to axle, thereby facilitating the
starting of the car.
1
When the drawbar is drawn out to the extent of its stroke, it is desirable to lift
and hold the pawl off the ratchet wheel G, and also to continue to hold the pawl off
the ratchet although the drawbar may be partially drawn in by the spring E, on the
draught being partially taken off This is suitably done by connecting the pawl to
the drawbar by a spiral spring L, attached to a shank L', sliding a short distance in a
slot I, connected to the underside of drawbar The length of the spring should be so
regulated that it will continue to hold up the pawl although the drawbar should go
back half its stroke To further hold the pawl off the ratchet when the drawbar is
fully in, the pawl is fitted with a branch or projecting tappet end K¹, which is acted
upon by a projection M, on underside of D, part of drawbar On the drawbar being a
drawn out this projection M, allows the pawl to fall upon ratchet and the draught
holds the pawl in ratchet overcoming the strength of the spring L, but as soon as the
drawbar completes its stroke and the wheels continue to revolve, the pawl is freed
of the draught strain, and is at once lifted by the tension the draught applies to the
spring L The horse may be attached direct on to the outside end of the drawbar,
but a further leverage can be obtained by actuating the drawbar by means of a bent
pivotted lever N, to the top of which the horse would be connected this is preferably
swivelled as shown. The swivel part C, is to compensate for the rocking of the
car to prevent the rocking straining the starting apparatus

page_text: Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed, I declare that what I claim 15,
In a tramcar
1 The combination with an extensible drawbar of a ratchet wheel keyed on to
bearing axle, lever arm or arms connected at one end to the drawbar held loose on
axle carrying a pivotted pawl arranged to engage ratchet on drawing out of bar and
to be held off ratchet while car is travelling, substantially as herein before described,
and illustrated in the accompanying drawing
2 In a tramcar starter the combination with an extensible drawbar connected to
lever arms held loose on axle carrying a pawl to engage ratchet wheel on axle, of the
means substantially as hereinbefore described for holding the pawl free of the ratchet
while the car is travelling
3 In a tramcar starter the combination of an extensible drawbar arranged to
actuate a starter, and a pivotted lever N, to enable a leverage to be applied to the
draught of the drawbar as described and set forth
FREDERIC PRINCE,
1, Quality Court, Chancery Lane, WC,
Agent for Applicant