Police are appealing for witnesses after three masked men, armed with bats and crowbars, forced their way into the Cardigan Arms pub, The Jamb, Corby.
The burglary happened sometime between 3am and 3.35am on Monday, 13 July. The offenders threatened the occupants and stole money before leaving.
They ran in the direction of the woods at the rear of the premises where it is believed they got into a car and drove across the field.
The three men were all wearing black clothing and balaclavas.
Anyone with any information can call Northamptonshire Police on 101. Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111