Talking about the addition of Howe, Cox said: "I saw Teddy when he was at Reading, and I know he's an attacking full-back who can get forward. He's somebody we need in the club at the moment, and I've done my research on him.
"Obviously he's not been involved too much at Blackpool but he's someone we're looking forward to working with. It's good for the club and for him. It's a big challenge for him and another player we're delighted to have got into the building."
It capped off a Transfer Deadline Day which had earlier seen George Taft make his loan move from Bolton Wanderers permanent, following a successful first five games in Iron colours.
Cox said: "It was brilliant for the football club and I'm over the moon with him as he came in on loan and had done really well for us. We spoke to the Chairman and asked if we could get something done, and he was all for it. We managed to do a deal with Bolton and he's delighted to be here. He's a good asset for this football club.
"He's been excellent and is great around the place too - professional, works hard, wants to be better and wants to win games. All the lads get on really well with him. We're trying to build a really good team spirit here and he's going to be a big part of it.
"When I mentioned (the prospect of making the move permanent) to him he was all for it straight away. He's something we needed, a left-sided centre-half who can do the horrible side of defending but also get the ball down and play as well."
Cox said the club had been looking to make further additions too, but it had to be the right type of player.
He added: "It's been frustrating because we've tried hard to bring two or three more players in, and a couple have fallen through at the last moment - not because of our circumstances but theirs. With the nature of the transfer window, everybody is waiting for something else to happen.
"We had to be careful, and I only really wanted to bring people in who were better than what we've got. The lads have to keep pushing themselves and we have Kev (Kevin van Veen) and Fela (Olufela Olomola) back in training, who will fight for those places up front. We're on a good run of form and long may it continue."
Cox concluded with an update on Jem Karacan, as the midfielder was forced off early in the win at Colchester on Friday with an arm injury.
He said: "We've had some really good news regarding Jem, who's had a scan today and it's not as bad as we first thought. He might be only out for two-to-three weeks."
See much more from Neil Cox on iFollow Iron.