baber/WOPTO huggingface dataset:
Patent GB-1253888-A (GB)
Title: Half toning method and apparatus for solid area coverage
IPC: G03G15/04
Filed: 1969-03-03
Abstract: 1,253,888. Electro-photographic processes. RANK ZEROX Ltd. March 3, 1969 [March 6, 1968], No.11209/69. Heading G2H. A method of improving reproduction of large solid areas and continuous tone areas comprises an additional exposure step, whereby a moving image surface is subjected to a uniformly distributed pattern of light and shadow. In one embodiment a xerographic drum 20, Fig. 1, is moved past a narrow exposure slit 40 adjacent a lamp 46 which is flashed on and off, e. g. 25 times per second to produce alternate light and dark lines or axially of the drum, thus dissipating the uniform charge previously given to the drum in this pattern. Alternatively, an xerographic belt (22) Fig. 2 (not shown) is exposed to a lamp (46) through a finely divided pattern (60), e. g., a checkerboard pattern of transparent and opaque areas or alternate transparent and opaque lines. Coarse patterns may have 50 or 60 dots or lines per inch, while fine patterns may have 100 to 400 dots or lines per inch. A lamp 64, Fig. 3 is illuminated continuously, while a shutter 68 is actuated periodically by pulsing a solenoid 74 to expose a drum 20 to the lamp through a pattern 70 in the aperture 72 of the shutter. The lamp 46, Fig. 1, which may be a xenon, mercury vapour, or other gaseous lamp has a trigger circuit Fig.5 (not shown) for providing the means for flashing the lamp on and off. A radio frequency source (103) causes partial ionization of the gaseous medium in the lamp envelope (90) such that the medium becomes sufficiently conductive to allow discharge of a voltage applied by capacitor (96) between anode (92) and cathode (93).
Patent GB-1459701-A (GB)
Title: Apparatus for conveying a slurry hose
IPC: E21C35/20
Filed: 1975-03-18
Abstract: 1459701 Taking up slack in flexible elements CONTINENTAL OIL CO 18 March 1975 [18 April 1974] 11219/75 Heading B8B A support for guiding a pair of parallel connected hoses through 180 degrees of loop which moves as one end of the hoses moves relative to the fixed other end, comprises a looped rollerway 33 movable along the path of hose loop movement, having an adjustable inclination and having input and output ramp sections pivoted at 65 to the two limbs of the rollerway 33 to facilitate variations in the approach and departure directing of the hoses. The looped rollerway 33 and each of the ramp sections comprises a bottom frame having horizontal rollers 59 and a pair of side frames having vertical rollers 57. The rollerway 33 includes ground engaging wheels in the areas of the pivots 65 and at its curved end is supported via an inclination controlling ram 61 on a powered vehicle 34 drivable on wheels 67 along the path of hose loop travel. As the hoses depart downwardly from the inclined input or output ramps, support bands on the hoses are coupled to free trolleys running on parallel overhead monorails 25, 26.
Patent GB-270303-A (GB)
Title: Improvements in or relating to dynamo-electric machines
IPC: H02P9/20
Filed: 1927-04-27
Abstract: 270,303. Maschinenfabrik Esslinger. April 29. 1926, [Convention date], Addition to 241,924. Dynamos, regulating; motors, controlling; regulation of exciting machines.- The machine forming the subject of the parent Specification acts, according to the present invention, as a generator supplying the whole or a part of the excitation of a main machine and is driven at a speed proportional to that of the main machine or it runs freely as a motor in the exciting circuit of such a machine and the resistance bridge is connected to the main machine terminals. As shown in the Figure, the machine a supplying the exciting winding n of the machine A has a series winding h and a winding 5 connected in a bridge circuit 1 - - 4. Resistances 1, 3 have a positive temperature coefficient and the resistance 2, 4 are constant or have a negative temperature coefficient. In another arrangement, the winding n and the machine a which supplies a counter voltage throughout are connected in series across the terminals of the main machine. In order to obtain different characteristics, the main machine may be provided with compounding series winding or the auxiliary machine may have an additional shunt winding. According to the Specification as open to inspection under Sect. 91 (3) (a), the bridge can be adjusted so as to obtain different characteristics. This subject-matter does not appear in the Specification as accepted.
Patent GB-565771-A (GB)
Title: Improvements in aerofoils
IPC: B64C23/00
Filed: 1941-09-04
Abstract: 565,771. Aircraft wings. VICKERSARMSTRONGS, Ltd., and WALLIS, B. N. Sept. 4, 1941, No. 11320. [Class 4] An aerofoil has its interior maintained at sub-atmospheric pressure in order to balance or offset the negative pressures imposed upon its exterior surfaces tending to disrupt the structure. For this purpose an aeroplane wing, which is otherwise hermetically sealed, has an aperture formed in its upper surface at a point or points where the appropriate negative pressure prevails. The aperture may be covered by gauze 5, and a cylinder 7 beneath the aperture extends into a removable receptacle 6 for collecting any rain or snow which may enter the aperture. Both the receptacle and cylinder are perforated as shown to permit ready communication of the reduced air pressure. The receptacle 6 is secured by bayonet-joint connections 10, 11 within a ring 8 in the lower surface of the wing. Instead of forming an aperture in the upper surface, the wing may be completely sealed and its interior connected to an exhauster such as a venturi tube exposed to the air stream. The invention is particularly applicable to wings constructed as described in Specifications 412,232 and 478,089.
Patent GB-377264-A (GB)
Title: Improvements in and relating to the treatment of bread and like dough
IPC: A21C9/08
Filed: 1931-04-16
Abstract: 377,264. Bread-making. POINTON, J. E., HARBER, L. S., Westwood Works, Peterborough, and BAKER PERKINS, Ltd., Willesden Works, Hythe Road, Willesden, London. April 16, 1931, No. 11332. [Class 28 (i).] Pieces of bread and like dough are mechanically worked, other than by spherical rounding, to impart to the dough a cylindrical form, the cylindrical form being then mechanically destroyed after which the dough piece is mechanically re-formed into a cylinder. A dough piece a received from a divider may be coiled by a spindle machine b and delivered in the direction of its axis to flattening rolls e after which the flattened dough is re-coiled by a machine f and delivered into a pan g. The dough pieces are proved after the first coiling, being delivered into the pans 9 of the prover by differentially moving conveyer belts which roll the coiled dough pieces. The pans 9 are automatically tilted and deliver the dough pieces to a shoot 11 along which a conveyer belt may travel, the dough then being flattened by rollers 12, coiled by the machine 13 and fed by the differential conveyers 14, 18 to the baking tins. Specification 319,891, [Class 87 (ii), Moulding plastic &c. substances], is referred to.
Patent GB-401589-A (GB)
Title: Method of and apparatus for treating water
IPC: C02F1/76
Filed: 1933-04-18
Abstract: 401,589. Purifying water or sewage. PEET, G. D., 11, Mill Street, Belleville, New Jersey, U.S.A. April 18, 1933, No. 11353. [Classes 46 and 111.] In chlorinating water or sewage, the chlorine is supplied to a portion of the liquid, which is byepassed from and returned to the main flow, flow through the bye-pass being caused by pressure difference due to an obstruction or restriction in the main flow. A main 10, Fig. 1, is fitted with an adjustable gate valve 18 and a bye - pass 11 of chlorine-resistant material is connected to the main at either side of the valve 18. Chlorine is supplied to the pipe 11 from a storage cylinder 13 through a regulating device 14. The pipe 11 may be fitted with a regulating valve 20 and an automatic gas-relief valve 16. A venturi throat may take the place of the valve 18. Fig. 3 shows an arrangement in which the main flow is obstructed by a weir or a dam 31 with a passage 32. The bye-pass 11b is connected to the points above and below the weir or dam and the chlorine is supplied through a pipe 15b.
Patent GB-137217-A (GB)
Title: Improvements in apparatus for administering oxygen and other gases for respiration
IPC: A62B18/00
Filed: 1919-05-07
Abstract: 137,217. Briscoe, G. M., and Eagar, G. F. F. May 7, 1919. Inhalers and respirators. -In apparatus of the continuous-flow type, the oxygen or other gas being administered passes, during the exhalation period, to a flexible non - collapsible chamber, whence it passes to the mask during the next inhalation, mixed either with atmospheric air or with exhaled air. The gas entering by a pipe a passes into a tube h connected at one end to the mask b, and at the other to a flexible, non- collapsible chamber d and chamber c open to the atmosphere. Inlet and outlet valves g, f are provided. In a modification, these valves are dispensed with, and the exhaled air passes into the chamber d. The chamber d may be of U-shape formed of two lengths of flexible piping connected by a U-tube.
Patent GB-718360-A (GB)
Title: Improvements in or relating to means for storing articles such as books or documents
Inventor: INGOLD HANS
IPC: B42F17/00
Filed: 1951-07-17
Abstract: 718,360. Cabinets. INGOLD, H. July 17, 1951, No. 11495/54. Divided out of 715,892. Class 52(1) [Also in Group X] Cabinets or shelf structures L<SP>1</SP>-L<SP>3</SP> on rollers 38 running on tracks 37 are normally disposed with their access faces in contact and can be separated by operating a pedal or lever 45 on the cabinet geared to a thrust member 60, engaging the rail or a rack or like abutment, to impart an initial thrust to facilitate movement.
Patent GB-980625-A (GB)
Title: Thermographic copying machine
IPC: F21V7/22
Filed: 1961-03-29
Abstract: 980,625. Thermographic copying machines. MINNESOTA MINING & MANUFACTURING CO. March 29, 1961 [April 5, 1960], No.11537/61. Heading G2A.  In a thermographic copying machine in which a copy is made by exposing an original and a copy sheet, held in contact round a roller, to radiation from a lamp inside the roller, the lamp is retractable from a position close to the roller to a position spaced farther away from it. In the form shown, the original and heat-sensitive copy sheets are fed together into an inlet 64 and guided up towards the printing roller 25. This consists of a thin-walled glass cylinder, within which is mounted a lamp 68 and reflector 67. The sheets pass between this cylinder and a roller 20 of soft rubber, which is slightly flattened at its area of contact with cylinder 25. The sheets then pass through outlet 65. When the sheets enter the apparatus, the leading edge engages a pair of wire bails 79 and pushes them upwards, which operates a switch to energize the lamp. As the trailing edge of the sheets leaves these wires, they fall back to their normal position and the lamp is extinguished. The lamp and reflector can move between the operative position shown in Fig. 2, when they are closely adjacent to the sheets passing between rollers 20 and 25, and a retracted non-operative position. Roller 25 rotates in contact with two smaller rollers 21, 22. The motive power is transmitted via roller 21, which is connected to a motor shaft 41 via a variable speed transmission. The speed is controlled by a U-shaped carrier member 36 mounted for pivotal movement about shaft 41, and movable by a rack 47 which engages with a toothed quadrant 46 forming part of member 36. This is operable from a knob 56 at the front of the device, via a Bowden cable 57, 58. The lamp and reflector are mounted at their ends on pivotal arms, and are normally spring-biased into the operative position of Fig. 2. They are retracted into their non-operative position by a mechanical arrangement of slides and cams, which engage the pivotal arms and tilt them so that the lamp moves away from the paper sheets. This is again controlled from knob 56, which further controls a main switch so that the lamp cannot be energized if the knob is in the "off" position. The reflector 67, which has a narrow opening 82 to concentrate the radiant energy from the lamp along a narrow band, is of a special construction giving improved reflection of heat and infra-red radiation. The printing roller has a slightly concave profile taken along its longitudinal axis, this assisting in the prevention of wrinkling as the two sheets in contact pass through the machine. Specification 980,626 is referred to.
Patent GB-1101442-A (GB)
Title: Improvements in bicycles having resiliently suspended rear wheels
Inventor: UNCLES PHILIP BASIL
IPC: B62K25/30
Filed: 1965-03-18
Abstract: 1,101,442. Spring suspensions for cycles. MOULTON CONSULTANTS Ltd. 18 March, 1966 [18 March, 1965], No. 11576/65. Heading B7E. A rear-wheel suspension system for a two wheeled cycle comprises an oval section frame member 1 which extends rearwardly from the pedal crank axle housing 3 and is closed by a plate 4 formed with apertured lugs 5, the system also including trailing arms 6 on which the rear wheel 2 is mounted at 2a and which are bridged at their-leading ends by a hollow tube 7 aligned with the lugs 5 and through which a bolt 8 passes to form a pivot for the trailing arms, there being a rubber compression spring 10 operating between frame member 1 and the trailing arms 6 to control the pivotal movement. The spring 10 comprising a rubber block bonded between metal plates 10a and 10b is fixed between a surface 4a of plate 4 and a surface 9a of a bracket 9 fixed to the upperside of arms 6 and the tube 7. A bolt 12 passing through the spring and surfaces 9a and 4a has nuts 11 and 13 at each end limiting the pivotal movement. In the embodiment of Fig. 2 (not shown), the rubber compression spring is wedge shaped and (7) has an internal hollow rubber sleeve (24) having in its bore a metal sleeve (25) through which bolt (8) passes. This arrangement provides cushioning between the pivot bolt (8) and trailing arms (6). In the embodiment of Figs. 3 and 4 (not shown), rubber spring (40) has an integral bush portion (41), which passes through an aperture in bracket member (42). Also the hollow tube (7) is provided internally with bearing sleeves (48) and a spacer tube (49) through which the pivot bolt (8) passes.
Patent GB-794184-A (GB)
Title: Method of and installation for regulating the temperature of hot blast produced in arecuperator by means of the waste gases from a shaft furnace
IPC: F28F27/00
Filed: 1954-04-22
Abstract: 794,184. Furnace recuperators. STRIKFELDT, W. S. April 22, 1954 [April 29, 1953], No. 11664/55. Class 64(1) The temperature of the hot blast supplied from a recuperator 4 to a shaft furnace 1 is kept constant by the automatic regulation of the quantity and temperature of the waste gas passing through the recuperator. The quantity is regulated by adjusting a throttle valve 12 or the speed of an exhaust fan 6, in the waste gas outlet 7 from the recuperator in accordance with the temperature of the hot blast: The temperature of the flue gases entering the recuperator is: kept constant by automatic regulation of the quantity of waste gas returned to the inlet 3 of the recuperator from the exhaust gas outlet of the recuperator upstream of the throttle valve 12. A return passage 13 between the outlet 7 and inlet 3 is controlled by a valve 14 operated in response to the temperature in the inlet 3. An additional valve 15, controlled like but wider open than the valve 12, may be provided in the outlet 7. The flow of waste gas from the furnace 1 to a combustion-chamber 2 leading to the inlet 3 may be controlled by a valve 16 automatically regulated by the temperature of the hot blast from the recuperator. Specification 659,141 is referred to.
Patent GB-663313-A (GB)
Title: Improvements relating to internal combustion engines, particularly diesel engines, with precombustion chambers
IPC: F02B23/04
Filed: 1949-05-02
Abstract: 663,313. Precombustion chambers. DAIMLER-BENZ AKT.-GES. May 2,1949 [Sept. 27, 1948], No. 11678/49. Class 7(iii) An internal combustion engine comprises a precombustion chamber 11 which is disposed in the cylinder head 8. eccentrically arranged in relation to the axis of the cylinder 4 and connected to the main combustion space in the cylinder by a duct 14 which opens into the space with steep inclination and slight eccentricity thereto so that in the upper dead centre position of the piston 5 there is formed, between the piston head 6 and the mouth of the duct, a passage constituting an annular gap of washer-shape through which distribution of the contents of the precombustion chamber is effected to all sides of the main combustion space. The piston head 6 has an eccentrically positioned annular trough 7 which constitutes the main combustion space. The chamber 11 is spherical and inclined at 70-85 degrees to the trough. The end 15 of the duct is parallel to the trough but may be inclined thereto and the cross-sectional area of the gap, that is the inside circumference of the gap multiplied by its mean height, is preferably equal to the cross-sectional area of the duct 14. The chamber 11 is closed by a sleeve 16 having an injection nozzle 18 which is co-axial with the duct and is shielded by a disc 17. The inlet valve 10 is larger than the exhaust valve and so the centre of the trough is somewhat laterally displaced frcm the centres of the cylinder, duct and chamber 11 which are in alignment, Fig. 2 (not shown). The eccentricity of the chamber 11 is preferably equal to half the radius of the cylinder. The walls of the cylinder head adjacent the chamber 11 and, if desired, the valves are water cooled. In a modification, Fig. 3 (not shown), the sleeve 16 abuts against a shoulder in the wall of the chamber 11. Specification 369,155 is referred to.
Patent GB-1223004-A (GB)
Title: Improvements in or relating to machines for working stone or artificial stone
IPC: B24B7/10
Filed: 1968-03-11
Abstract: 1,223,004. Grinding. E. SCHOLZ, and H. SCHOLZ. 11 March, 1968 [2 Sept., 1967], No. 11739/68. Heading B3D. A machine for shaping stone by grinding comprises a workholder which includes three members for supporting a workpiece having a planar surface, the members each having in use a point or line of contact with said surface, and a clamping device for preventing movement of the workpiece relative to the members. As illustrated the members are rollers 4, 5 rotatably mounted on arms 6, 7 which are adjustable along a rail 2 on a base body 1. The arms may be adjustable in length or alternatively may be replaced by arms of different lengths. The clamping device is constituted by a pair of clamping jaws 9 adjustably mounted on a shaft 10. A stop member 16 is provided if-required as is the case in embodiment of Fig. 2. In use a workpiece is clamped on the supporting rollers and the base body is moved relative to grinding wheels. In working a work piece as illustrated in Figs. 5 and 10 grinding wheels 27-30 are employed. When the workpiece is an angled step having a recessed riser the wheel 27 is replaced by a wheel having two grinding surfaces (Fig. 9, not shown).
Patent GB-473764-A (GB)
Title: Icing, moulding, and impressing table for applying colloidal and plastic substances to cakes and the like
IPC: A23G3/28
Filed: 1936-04-25
Abstract: 473,764. Coating bakers' goods; moulding confectionery. WEYREUTER, J. April 25, 1936, No. 11779. [Class 28 (i)] [Also in Group V] In a device for facilitating the ornamentation of cakes or the like, a turntable A is mounted on a two-part sleeve B revoluble on a shaft C in two parts, hinged together, and resting upon a ball race E. The lower part of the sleeve B carries arms D<1> which carry a rail R. A disc P having ornamentations in relief, or ornamental perforations, is mounted between the table A and the rail R. A column L on the base F carries a bracket M in which are journalled three rollers, i.e. two superposed rollers J, with adjustment means K, for sheeting marzipan fed thereto, and one rubber faced roller S, shown in dotted lines in Fig. 1, for pressing the sheeted marzipan against, or through, the disc P. When a perforated disc P is used, the ornamental pieces are received on an annular plate resting, preferably permanently, on the part D carried by the sleeve B. The rotation of the rollers J, S and of the parts B, D<1>, D, R, P, A is effected by a handle N and bevel and other gearing, the gear wheel H being a free wheel. When a disc P having relief ornamentation is used, the ornamented marzipan sheet is removed, and wound on the cylindrical part of a spool U, Fig. 3. The bracket M is removed from the column L and replaced by an arm, vertically adjustable on the column, which arm serves as a support for a hand palette or template for applying icing to a cake on the table A. The disc P being removed, the table may be tilted into an inclined position as shown in dotted lines, the hinge connection of the parts of the shaft C being kept in the desired position by the insertion of a wedge. The two parts of the sleeve B have interengaging gear teeth so that the rotation of the bottom part of the sleeve is imparted to the top part in all positions of adjustment. The cake is maintained on the table by radially adjustable holding plates. When the cake is iced, the arm is removed from the column and the apparatus shown in Fig. 3, is placed thereon. The marzipan from the spool U is applied to the revolving cake and is pressed thereon by the brush V. The spool and the brush are adjustable along their shafts.
Patent GB-549912-A (GB)
Title: Improvements in or relating to method of rifling gun barrels
IPC: B23D37/16
Filed: 1941-09-15
Abstract: 549,912. Broaching. LAPOINTE MACHINE TOOL CO., Ltd. (Lapointe Machine Tool Co.). Sept. 15, 1941, No. 11792. [Class 83 (iii)] Gun barrels are rifled by simultaneously partially broaching all the grooves in the barrel B, Fig. 28, increasing the depth and width of the grooves by successive broaching operations and finally finishing the bore concentrically with the grooves. In one example the barrel B has initially a plain bore of 0.296 inch diameter. It is broached by a first tool, Fig. 1, having a plain pilot portion 40 of 0.295 inch diameter, a series of gradually increasing cutters 41 ... 42 and a non-cutting pilot 43 of 0.303 inch diameter. During this first operation the broach and neck have positive relative rotation according to the spiral lead of the grooves. The metal removed in this operation is that shown at a in Fig. 28. The next broach, Fig. 6, has end pilot portions 50, 53 and cutting portions 51 ... 52, these cutters deepening the grooves by cuts of slightly less width as at b, Fig. 28. The original grooves guide the broach and so positive rotation is not necessary. The third broach is of similar form to the second and widens the grooves to an increased depth as at c, Fig. 28. The fourth broach, Fig. 16, has helical pilot portions 70, 73 and cutting portions 71 ... 72, these cutters making full width cuts of increased depth as at d, Fig. 28. The final broach, Fig. 21, trues up the bore of the barrel to the final diameter of 0.301 inch by removal of metal e, Fig. 28. This broach has pilot portions 80, 82, 84 and round section cutters 81 ... 83.