Photography AnnualIliffe., 1895 |
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acid Adams Altrincham aluminium AMATEUR aperture apparatus Birmingham brass bright bromide carbon chemist chloride colour dark room dark slides diameter ditto double dark slides eikonogen enlarging entrance fee exposure extra Fallowfield film finder fitted focal length focus frame front gelatine gives grains half-plate hand camera headquarters High Holborn High Street Holborn Hotel Ilford inches instantaneous iris diaphragm lamp Lancaster lantern slides leather lenses Lick Observatory light lines London mahogany Marion metol mount nebula negative number of members object glass Observatory obtained Optimus ordinary ounces paper patent Phot Photo PHOTOGRAPHIC SOCIETY dates PHOTOGRAPHY ANNUAL picture plate Platinotype portable portrait post free potassium PRESIDENT Price prints Prof Quarter-plate rack and pinion rapid rectilinear rectigraph rectilinear lens Road Ross screw SECRETARY shutter silver soda sodium Soho Square solution spectrum stars Stereo Stereoscopic Studio subscription sulphite sulphocyanide Thornton-Pickard toning tripod tube Tylar washing whole-plate yellow
Popular passages
Page 74 - In all places, then, and in all seasons, Flowers expand their light and soul-like wings, Teaching us, by most persuasive reasons, How akin they are to human things. And with childlike, credulous affection We behold their tender buds expand; Emblems of our own great resurrection, Emblems of the bright and better land.
Page 74 - And the Poet, faithful and far-seeing, Sees, alike in stars and flowers, a part Of the self-same, universal being, Which is throbbing in his brain and heart. Gorgeous flowerets in the sunlight shining, Blossoms flaunting in the eye of day, Tremulous leaves, with soft and silver lining, Buds that open only to decay...
Page 15 - Meter (as the new unit was named) was therefore defined to be the ten-millionth part of the distance from the equator to the north pole, measured along the sea level, on the meridian passing through Paris.
Page 87 - No amendment shall be allowed that would make the specification, as amended, claim an invention substantially larger than or substantially different from the invention claimed by the specification as it stood before amendment.
Page 85 - Reference figures and letters must be bold, distinct, not less than £ of an inch in height; and the same letters should be used in different views of the same parts. In cases of complicated drawings, the reference letters must be shown outside the figure, and connected with the part referred to by a fine line. The scale adopted should be large enough to show clearly wherein the invention consists, and only so much of the apparatus, machine, &c., need be shown as effects this purpose. When the scale...
Page 87 - ... been anticipated : for the Patent Laws of this country make no provision for an official search as regards novelty, and all patents are taken out at the risk of the inventors. The searcher is, however, greatly assisted in his task by a series of indexes and abridgments published by the Patent Office as a guide to the specifications themselves, and freely distributed to the principal public libraries in this country.
Page xxiv - NOTE.— In case the above may not be clear to some photographers, the following rules may be better understood : To find the principal focus of a lens (p), focus a near object in the camera, and measure the distance between it...
Page 15 - ... fills the cube of a hundredth part of the meter. Each unit has its decimal multiples and sub-multiples, that is, weights and measures ten times larger, or ten times smaller, than the principal units.
Page 85 - ... or on the ground that the invention has been patented in this country on an application of prior date, [1or on the ground that the complete specification describes or claims an invention other than that described in the provisional specification, and that such other invention forms the subject of an application made by the opponent in the interval between the leaving of the provisional specification and the leaving of the complete specification,] but on no other ground.
Page xxiv - To find x divide the square of / by 16 times the square of o (the diameter of aperture to lens). For example Focus an object which is five inches high, so that it is one inch high on the ground glass; thus we know that r = 5.