Master Shipwright and his Assistant, Chatham Dockyard, to Navy Board, 17 June 1756.
On Tuesday a petition was brought to the Honourable Thomas Cooper, Esq., Commissioner of this yard, by john Bissenden and Robert Woodriff, shipwrights, in behalf of the whole body of shipwrights, relating to their carrying chips out of the yard on their shoulders. The next day the Commissioner sent for them in the presence of the Master Shipwright and the First Assistant and represented to them the ill consequence of such proceedings, and read to them your Honourable Board's warrant of the 4 May 1753 on which the said two men withdrew the petition and said they would talk to all the people and believe everybody would be satisfied with what had been said to them. And in the afternoon the Master Shipwright sent for all the foremen and quartermen and read the Order to them of the 4th May 1753, and give every quarterman a particular charge to tell all his men separately what the order was relating to their lowering their chips and carrying them under their arm out of the yard.
This day at twelve of the clock some few of the workmen about one hundred and fifty came up first to the gate without any chips, afterwards about twenty more came and lowered their chips agreeable to the Board's warrant. Then came John Miller, shipwright, about thirty feet before the main body of the people, on which the Master Shipwright ordered him to lower his chips. He answered he would not, with that the Master Shipwright took hold of him, and said he should. He, the said Miller replied, 'Are not the chips mine? I will not lower them.' Immediately the main body pushed on with their chips on their shoulders, crowded and forced the Master Shipwright and the First Assistant through the gateway, and when out of the yard give three huzzas.
http://en.wikipedia.org/wiki/Chip_on_shoulder