T. J. Marshall and Co
of Campbell works, Gillet-street, Kingsland,
1881 Makers of paper and bank-note moulds, paper machine wires, straps, &c.
Note: The '&c.' evidently included stained glass:-
1886 'Yesterday the handsome stained glass windows, just executed by Messrs. T. J. Marshall and Co., artists in stained glass, Campbell Works, Stoke Newington, for the Congregational Church, Approach road, Victoria Park, were exposed to view. ...'[1]
1898 Advert here states that John Marshall of Dartford invented the Dandy Roll in 1826, and that Thomas John Marshall invented revolving strainers in 1845
1906 'A Useful Invasion. AN INEXPENSIVE AUTOMATIC CALCULATOR. Numerical calculating machines have been before the public for some time now, but all of them so far have had one rather serious hindrance to their universal adoption, and that is their big price. Now, however, that obstacle has been removed in the production of a remarkably efficient, simple and compact little instrument that has just been placed on the market, and when its merits, together with its comparatively absurdly low price, become generally koown it will assuredly sell like hot cakes. It is called the "British Calculator," and is patented throughout the world. It is no thicker than an ordinary watch and will just about fit the jacket pocket. It is so simple to use that any child could manipulate it after a minute or two's explanation. Above the three rows of figures, corresponding to the pounds, shillings, pence or halfpence, are divisions, into which the style or stylus is inserted. A gentle pressure carries the figure required to the extreme right, and registers it in the blank spaces, just below the ends of the slotted arcs, and as each additional figure is added, whether of pounds, shillings, peace or halfpence, the total immediately appears there. Thus the Calculator instantly adds up £ s. d , and the action is so simple that the machine can be worked by a child. The speed is generally about six times as rapid as mental addition, but quick operators can exceed even that. There is no brain exertion, all the conversions of pence to shillings and shillings to pounds being done mechanically and accuracy is absolutely assured. It repeats at £500, thus making the machine effective for checking accounts up to hundreds of thousands of pounds if necessary. The retail price of the British Calculator is £2 10s., and a neatly made little leather pocket case, plush lined, into which it fits tight, is supplied for the machine. It is such a desirable acquisition to the clerical department of all small or large businesses that there should be a big demand, and stationers will do well to make enquiries about it. We learn that already several large stationers who have seen it have at once given orders for them, besides which most of the large opticians and mathematical instrument makers have it. The makers of the machines are Messrs. T. J . Marshall and Co., Stoke Newington, London, N., and the address of the offices of the company : The British Calculators, 9, Coleman-street, London, E.C.
This firm are the makers of the world-famous Dandy Rolls for watermarking paper, and our representative was the other day courteously shown over the works at Stoke Newington, where these ingenious Calculators were being made, as well as the department where the Dandys were being constructed and repaired. After this firm's pretty little Miniature Papermaking Machine, which has been so frequently before the trade of late at various pubic functions and his invariabiy attracted a large crowd of admirers, was set to work, there being a few other visitors also present for hue purpose of seeing it, including a representative of a well-known Wholesale stationery firm in Australia. A rag paper was made of excellent quality, and the very distinct watermark that was produced was especially successful. There has ben a little improvement made to the machine since it was last demonstrated ....'[2]
1914 'Established in 1792 at Dartford, Kent, by John Marshall. Partnership Successions: (1) Thomas John Marshall, son of the founder; (2) Thomas Allen Marshall and Charles Dudley Marshall, sons of Thomas John Marshall. Present Principals: Charles Dudley Marshall and Rowland Egerton Wedgwood. Incorporated as a private Limited Company, October, 1908. Chairman and Managing Director: Charles Dudley Marshall. Oldest established firm of Dandyroll Makers. Premises: Campbell Works at Stoke Newington, containing about 8,000 sq. ft. of floor space, with yard and boiler and engine house. Staff: Clerks, artists and workmen, about sixty in all. Specialities: Dandyrolls, Laid, Wove, and Spiral Laid, with patent watermarking invented in 1870. Animal Sizing Machines, Paper Moulds for Bank Notes, &c., Patent Balancing Dandyroll Carriages, Best Pure Red Rubber Deckle Straps, Paper Machine Wires, Paper Testing Machines and Scales, Single Sheet Cutting Machines for cutting watermarked paper accurately; also Miniature Paper Making Machinery for Technical Schools, and testing at Paper Mills (the smallest paper-making machines in the world).' Source: 1914 Who's Who in Business: Company M