A printed 1868 exchange of letters between English inventor William Wood and American inventor Erastus B. Bigelow over who first invented the power loom for weaving Jacquard Brussels carpets. Wood claims priority for changes to tension weights, the lifting of the mounture in place of the poll shaft, and the placement of the ground-warp heddles. Bigelow replies with his own invention dates (1836 terry-fabric loom, 1845 carpet loom), patent details, the 1842 US Patent Office rejection of Wood's application, and the jury report from the 1851 Great Exhibition in London.