A man has been jailed for stabbing a woman who was helping his partner move out.
Leeds Crown Court heard at first John Armitage would not let Kelly Keith into the property when his partner, Chantelle Beecham, decided to get her belongings and children and leave.
But Richard Smith, proscuting, said he eventually let her in and she was helping with the children, in the early hours of February 2.
Armitage was angry and shouting and pushed Miss Keith in the chest, causing her to fall on to a bed.
The court heard she thought he was going to punch her and instinctively raised her arm to protect herself, it was only after he moved away she realised there was blood and a cut on her arm.
Miss Beecham said the knife was a double bladed lock knife which Armitage, 34, of Broadgate Drive, Horsforth, kept in the bedroom and it was recovered when he was arrested.
He accepted causing the injury when he said he had gone to stab Miss Keith in the chest and she had put her hand up to block it.
He said he had been arguing about his partner’s contact with another man and had snapped when the two women were laughing at him.
Miss Keith suffered a six centimetre cut to her left arm and was referred to a hand specialist.
Gareth Moore, for Armitage, said he had a turbulent upbringing and troubled background which had profoundly affected him.
Armitage admitted unlawful wounding and was jailed for 18 months.
Recorder Gurdial Singh told him the offence had a traumatic impact on the victim and only immediate custody was appropriate.
She had received a deep cut to her arm when she was only trying to help and Armitage made the decision to arm himself.