Patent GB-190411528-A (GB)
Title: Apparatus for Assisting in Reading off the Draught of a Design and Printing the Figures in the Sheets Employed in the Process of Punching Jacquard Cards.
Inventor: GRANGER RICHARD
Filed: 1904-05-19
Granted: 1905-04-06
Abstract: 11,528. Granger, R. May 19. Type-writers and like machines; copy-holders for type-writers.-Relates to type-writing apparatus by which one workman may read the draught of a design and print the figures on the sheets employed in the process of punching jacquard cards, for example in the piano punching-machine. The movements of the guide-bar employed in the manufacture of levers lace, for example, may also be indicated in this manner. Traversable typewriting mechanism is employed, and the figures are printed thereby on the special figure-sheet used, the draught being held in front of the workman in a holding-device, indicators being also provided to assist the workman in following the draught and indicating the point he has reached. There are three sets of keys F, G, F<1>, Fig. 1, the keys F printing numbers from 0 to 7 and the keys G printing in a different space the six arrangements of three dots shown in columns b, c, Fig. 7. The key F<1> prints a dot over a numeral to indicate ¢. The dots have values which are multiples of eight, and, by combination with the figures 1, 7 with which they are always printed, give all numbers from 0 to 39. They are employed to reduce the number of keys used. The left half of the type, type-bars, and keys are a duplicate of the right half ; they print, however, in a space to the right so that both can be used simultaneously. Four keys altogether may therefore be simultaneously depressed. When any key is depressed, a bar M is engaged, arms L<2> and a shaft L are rocked, and an escapement J on the outer arm L' of the shaft L is brought into action. The escapement has a spring-actuated dog or catch and a fixed dog, alternately moved into engagement with the pins H<4> on an escape wheel H<3>, carrying a wheel H<1>, gearing with a toothed wheel on the paper-roller shaft. The pin-wheel H<3> is set out for eighteen pins H<4>, but two are omitted, leaving two groups of eight. Eight sets of characters are thus printed, the roller B moving through the usual space; then the roller moves through a distance equal to two ordinary spaces, giving a blank space on the figure sheet, which may be used as a substitute for the ruled lines usually employed A spacing-bar Y is used for actuating the escapement J when desired. The type-writing mechanism is carried on a carriage D mounted on guide-shafts D<1> and is traversed by escapement mechanism thereon engaging with a fixed rack N. The escapement, which is controlled by a lever O, comprises two pawls N', N<2>, Fig. 3, moved into and out of gear with the rack N respectively by springs N<3>, N<4>, while the two arms of the lever O on the contrary move them out of and into gear with the rack N respectively. The pawls are adjusted so that one tootb escapes each time the pawl N' is raised and released, and the carriage is then moved to the right, preferably by a weighted string. A second lever P raises the pawl N' without depressing the pawl N<2>, and so puts the escapement out of action altogether. A wheel S, bearing figures on its periphery corresponding to those on a scale on the board which carries the draught, is carried by a feather and groove on a shaft T connected by gearing to the roller escapement pinion H'. The wheel S thus indicates the point in the draught the operator has reached. The board U which supports the draught is carried on an adjustable framing U<1>, and is provided with openings for the draught shaft and a clamping-bar V which is provided with a figured scale corresponding to that on the indicator wheel S. A number of strings of the distinctive colour if desired, stretched between vertical bars W<1> adjusted eight ruled spaces apart, divide the draught into spaces for any point in which the same sign key is used, the operator having merely to select the numeral key to use with the sign key. One end of the figure-sheet is held in a lever-actuated clip, and the other is held by a bar which is pressed by spring-actuated arms against the roller B.