There are three "Useful Registered Designs" listed for Colin Pullinger at
the UK National Archive, that seem to be relevant:



Reference: BT 45/19/3717
Description:
Useful Registered Design Number: 3717.
Proprietor: Colin Pullinger.
Address: Selsey, near Chichester, Sussex.
Subject: Self-setting trap for catching rats and mice.
Category: Traps for Birds, Vermin, Insects.
Date: 1855 May 15
Held by: The National Archives, Kew
Legal status: Public Record
Language: English




Reference: BT 45/24/4603
Description:
Useful Registered Design Number: 4603.
Proprietor: Colin Pullinger.
Address: Selsey, near Chichester, Sussex.
Subject: Improved vermin trap.
Category: Traps for Birds, Vermin, Insects.
Date: 1863 Dec 7
Held by: The National Archives, Kew
Legal status: Public Record


​
Reference: BT 45/24/4764
Description:
Useful Registered Design Number: 4764.
Proprietor: Colin Pullinger.
Address: Selsey, near Chichester, Sussex.
Subject: A perpetual mouse trap.
Category: Traps for Birds, Vermin, Insects.
Date: 1866 Jan 13
Held by: The National Archives, Kew
Legal status: Public Record


These have not been digitised so are not available online


It may be that these three designs correspond to those variously shown
diagrammatically in the first article in this link:

http://sias2.pastfinder.org.uk/sih_1970_2008/24-1994.pdf


cheers,

Mike