Your camera was called Rayment's patent camera:
http://www.earlyphotography.co.uk/site/entry_C418.html
Patents by Rayment, A.
1675 1886 Method of fixing the front standard to the baseboard using vertical rods inside the forks.
18542 1888 The focusing pinion has reduced sections so that when these are moved over the rack it is out of gear.
Company details posted by
earlyphotography:
Perken Son & Rayment
Company Name
Perken Son & Co. Ltd 1900 - To after 1940
Perken Son & Co. 1900
Perken Son & Rayment 1887 - 1900
Lejeune & Perken - 1887 Earliest ref. is 1854
Company Address
94 Hatton Gdn., London EC1 1920 -
99 Hatton Gdn., London EC 1886 - 1920 EC1 postal district from 1917
101 Hatton Gdn., London EC - 1886
112 & 113 Gt. Saffron Hill, London EC - 1887
141 Oxford St., London EC 1892 - 1896 Then occupied by Moult Bros. 'West End Photographic Stores'
126 Chancery Lane, London - 1854 -
Advertisements claim establishment in 1852, in 1854 they were described as importers of foreign goods. They are known to have made cameras and lenses for other companies; one camera exists with the label "Lejeune & Perken made for J.T. Chapman" and lenses were supplied to M.W. Dunscombe.
Perken Son & Rayment was dissolved at the end of 1899 when Arthur Rayment left the partnership, the business was continued as Perken, Son & Co from 1/1/1900 by Frederick Louis Perken and Edgar Theodore Perken. The company was registered in March 1900 with capital of £1000.
References:
BJA 1912, p. 239. Photographic News 2/10/1896. Lon. Gaz. 12/1/1900.