Patent calculator
A Patent puts 7 bets on three horses, each in a different race: 3 singles, 3 doubles plus 1 treble. Tell the Patent calculator how each horse ran and it works out the return on all 7 bets.
How many bets are in a Patent
Because a Patent includes 3 singles, even one winner on its own still brings a return. Staking £1 on each bet means the cost is £7; go each way and that doubles to £14.
| Type of bet | Bets | Cost at £1 a bet |
|---|---|---|
| Singles | 3 | £3.00 |
| Doubles | 3 | £3.00 |
| Treble | 1 | £1.00 |
| All Patent bets | 7 | £7.00 |
| Each way | 14 | £14.00 |
What a Patent calculator pays
For a £1 Patent, the table gives the return when its first few horses win. Odds go 2/1, then 3/1, then 4/1 and higher up the list, before Rule 4 or a dead heat.
Returns by number of winners, worked out
| Winners | Return | Profit or loss |
|---|---|---|
| One | £3.00 | -£4.00 |
| 2 | £19.00 | +£12.00 |
| All 3 | £119.00 | +£112.00 |
Patent bets: Rule 4, dead heats and each way
A Patent turns into 14 bets once each way is active, with a win half and a place half; the each way calculator for Lucky 15 works the same. When a rival is withdrawn, Rule 4 cuts the winnings of your selection by pence in the pound, on any bet that includes it. If a selection does not run, it drops out of its bets and they carry on with the others. In a dead heat, half the stake is paid at full odds. Both Rule 4 and dead heat have a button on every selection on the slip.
Lucky 15 or Patent
With three horses a Patent has 7 bets; a Lucky 15 covers four horses with 15. A Patent is a Trixie plus the three singles, so even one winner brings some return. When you have four runners and want the singles included, go to the Lucky 15 calculator.