baber/WOPTO huggingface dataset:
Patent GB-833633-A (GB)
Title: Device for comparing light intensities
Inventor: MENZIES ALEXANDER CHARLES GEOR
IPC: G01J1/16
Filed: 1955-09-06
Abstract: 833,633. Comparing light intensities photoelectrically. HILGER & WATTS Ltd. Sept. 28, 1956 [Sept. 6, 1955], No. 25558/55. Class 40(3). Apparatus for comparing the intensity of two beams of light includes a photoconductive cell illuminated by the two beams of light in alternation and connected to an alternating electrical potential of the same frequency as and in phase with the alteration of illumination of the cell, and an indicator or control instrument to which the output from the photo - conductive cell is applied. In Fig. 1, a transformer T supplies current during alternate half-cycles through rectifiers 5, 6 to lamps 3, 4, respectively. Light from the lamp 3 passes through a calibrated variable aperture 7, a collimating lens 8, a sample 11 and a lens 9 which focuses it on to the photo-conductive cell 10. Light from the lamp 4 passes through a variable aperture 12 and a lens 13 which focuses it on to the cell 10. The cell 10 is energized from the transformer T by alternating current adjusted in phase by means of a condenser 15 and variable resistance 16. Any difference in intensity of the two beams falling on to the cell 10 results in a D.C. component superimposed upon the alternating current flowing through the cell 10, this D.C. component being measured by a D.C. meter 17 connected in a smoothing circuit comprising an inductance 18 and a condenser 19. In use the beams are first equalized by adjusting the aperture 12 before introducing the sample and then by adjusting the aperture 7 after introducing the sample, the aperture 7 thereby giving a calibrated indication of the transmission of the sample. The invention may be applied to a recording spectrophotometer by controlling one of the variable apertures from the response of the photo-conductive cell, or into a process control instrument in which a liquid product passes through the absorption cell and one or more variables in the process controlled from the photo-electric device. The invention may also be applied to a photoelectric polarimeter. Specification 685,288 is referred to.
Patent GB-479615-A (GB)
Title: Improvements in display devices
IPC: G09F11/34
Filed: 1936-09-21
Abstract: 479,615. Moving signs ; clocks. WILLENS, G. Sept. 21, 1936. No. 25598. [Classes 3(i) and 139] In display apparatus of the type comprising a plurality of independent display panels which are caused to travel intermittently around a closed circuit by rotating the casing in which they are mounted about a medial axis, a, clock may be carried by the casing and actuated by the movement thereof. The panels 29 slide lengthwise and move transversely by gravity in the usual manner, so as tc present at the viewing windows 15, 16 a fresh display at each half-turn of the casing, and the shaft 18<1> about which the whole casing A rotates is of a thickness to allow only one panel at a time to pass on each side The panels are guided by side channels in the casing A, the top and bottom of which have cushioning pads 25<1> and arc to give access to the panels. The pane frames comprise side mem bers each consisting of two spaced apart channels fixec by tongue-and-slot connecti.ons to top and bottom members each consisting of a single channel. Two display sheets are passed into the panel frame by way of the slot in either side member. Mounted above the window 15 is a clock D, and in the corresponding position on the other side is a mirror 47 or, alternatively, another clock. The clock hands are driven by an eccentrically weighted wheel 43 mounted on a spindle 42 geared to the hands, the wheel 43 remaining vertical while the clock is swept through a circle around the shaft 18<1> together with the rest of the casing A. The casing is rotated by a synchronous motor through a friction drive.
Patent GB-170278-A (GB)
Title: Improvements in or relating to gear cutting machines
IPC: B23F9/10
Filed: 1921-09-28
Abstract: 170,278. Gleason Works, (Assignees of Stewart, A. L., and Finsen, E.). Oct. 14, 1920, [Convention date]. Gear-cutting. - In a bevel-gear-generating machine of the type in which the blank and tool are given a relative rolling movement during cutting, the tool and blank being then reversely rolled while out of contact and the blank indexed before the next cut, automatic means are provided for operating the generating mechanism at varying speeds during the cycle, thereby increasing the speed of the machine. In Fig. 2 the blank 6 is shown mounted on a spindle 8 on a support carried by a table 4, which is oscillated to feed and withdraw the blank to and from an annular cutter 7 by means of a cam mounted on a shaft 26 carrying a worm wheel 27. The general arrangement of the gearing is shown diagrammatically in Fig. 8. The driving pulley 16 drives a shaft 14 driving in opposite directions pinions 18, 22 carried on sleeves on a reversing shaft 10. The latter drives through a shaft 12 a loose gear 31 on a shaft 29 driving the blank feed cam shaft, and bevel gearing 34 is so arranged that the shaft 29 is always rotated in the same direction but at varying speeds corresponding to the speeds of the opposite motions of the reversing shaft 10. The cutter spindle 50 is mounted eccentrically in a frame 51 adjustable in a carrier 39 by hand-operated worm gearing, in order to vary the position of the cutter spindle in its oscillating carrier according to the dimensions of the blank being cut. The cutter spindle is driven from a spindle 55 also mounted in the adjusting frame and operated from a shaft 58 geared to the driving pulley as shown in Fig. 8. The slow and fast oscillatory movements of the cutter carrier for cutting and return respectively are operated from the shaft 10 through a shaft 11, spur and bevel gears 47, and worm gear 42. The blank rotating and indexing movements (not described) are also operated from the shaft 10. The cam operating the blank feed and withdrawal motions is so constructed that the withdrawal is commenced at the end of the cutting roll and completed during the first part of the high-speed return roll, and similarly the inward feed is completed during the first part of the cutting roll, the complete cycle being as shown in Fig. 10, where x and y represent the cutting and return rolling movement respectively. This reduces the amount of rolling movement required and further increases the speed of the machine. The invention is stated to be applicable to other types of gear-cutting machine.
Patent GB-315618-A (GB)
Title: Improvements relating to the production of piston slap in internal combustion engines
IPC: F16J1/06
Filed: 1928-09-07
Abstract: 315,618. Andrews, E. S., (Simplex Piston Ring Co. of America, Inc.). Sept. 7, 1928. Pistons, balancing laterally; connecting-rods.-Piston slap is prevented by means of a broad split ring F in a groove in the piston in the plane of the gudgeon-pin. The. ring F' is pressed against one side of the cylinder by a helical spring G engaging an abutment in the interior of the gudgeon-pin. The latter is secured at one end in the boss D by a stud I. The spring G may be replaced by a wave spring placed beneath the ring F at one end of the gudgeon-pin.
Patent GB-406939-A (GB)
Title: Improvements in and relating to trousers and like garment presses
IPC: A47G25/72
Filed: 1933-09-19
Abstract: 406,939. Trouser presses. SAXON, R., Southolt, Balcombe Road, Horley, Surrey. Sept. 19, 1933, No. 25883. [Class 141.] Trousers and like garments are pressed and stretched by gripping a portion of the garment between the leaf B, Fig. 1, and a square, angle, or round bar A which is resiliently held by a spring D and guided on or near to the face of the base C and parallel thereto by the continued movement of the leaf. In Fig. 2, the garment is gripped between an undercut resilient bar A and a round bar B pivoted to a bracket L on the leaf. In another form, the bar A is flat and pivoted above the spring so that the lower edge swings along the base C.
Patent GB-1331400-A (GB)
IPC: B21D51/32
Filed: 1972-06-02
Abstract: 1331400 Drum ends GALLAY SA 2 June 1972 [9 June 1971] 25891/72 Heading B8D A sheet metal drum end closure 2, having an axially inset substantially planar end panel wall 9 joined to a peripheral cylindrical wall 4 by a rounded channel 5 and a fillet 8, is provided in the end panel wall with at least one stiffening channel 10, which is larger than the channel 5 and projects inwardly of the drum. As shown, two stiffening channels are provided in the end closure, which has a diameter of 600 mm. and a thickness of less than 0À8 mm., e.g. 0À6 mm. In an alternative embodiment, Fig. 2 (not shown), a like-sized closure having a thickness of at least 0À8 mm. is provided with a single stiffening channel. Various specific examples are given for the values or ratios of the drum end panel inset H, the height (h) width (e) and radius of curvature of the stiffening channel and like dimensions of the channel 5. The cylindrical drum body 1 may be provided with rolling beads or corrugations.
Patent GB-676179-A (GB)
Title: Improvements in ornamented lampshades
IPC: F21V1/00
Filed: 1950-10-24
Abstract: 676,179. Ornamenting lamp shades. PRICHARD, M. B., and PRATT, M. W. Nov. 9, 1950 [Oct. 24, 1950], No. 25926/50. Class 75(ii) A lampshade is ornamented by having three-dimensional objects or models arranged in one or more recessed sides thereof so as to form three-dimensional pictures, the outer surface of each picture being covered by a sheet C of transparent material. A piece of cartridge or like paper B of the shape shown in Fig. 2 is varnished, and provided with two slits to enable the sides and bottom to be folded on the dotted lines. This sheet forms the foundation or background B, Fig. 4, and is sewn with tape to the wire frame A of the lampshade. The background is painted to represent sky and distant scenery, and models such as a ship E, human figures, animals or birds affixed by cellulose cement. The picture is " glazed " with a sheet C of clear acetate sheeting sewn to the frame. The foreground F may be tissue paper varnished and painted to represent sea. D indicates braiding affixed by stitching or by cellulose cement to the frame.
Patent GB-859411-A (GB)
Title: Improvements relating to magnetic amplifier circuits
Inventor: SHERLOCK JAMES
IPC: H03K17/80
Filed: 1956-08-24
Abstract: 859,411. Magnetic amplifiers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 15, 1957 [Aug. 24, 1956], No. 25980/56. Class 40 (9). The input to a single core resetting half-wave magnetic amplifier is made over a normallyenergized winding cwl, the effect of which can be cancelled to produce load current by switching in an oppositely-connected winding cw2. The amplifier may be given feed-back so as to lock itself in a condition to energize the load L, as shown in Fig. 3. Normally input winding cw1 is energized and load L receives no current. When switch S2 is made winding cw2 cancels the effect of cw1 and load L takes current. A second stage half-wave magnetic amplifier receives input from a shunt across the load and provides feed-back from a potentiometer P2 to block winding cw1. Button S2 may therefore be released and output will continue. To reset the amplifier a switch S3 is closed to bridge the excitation rectifier in the load circuit. In place of a second-stage magnetic amplifier a transistor gate may be used in circuit with winding cw1 so that the transistor is cut off when output appears across the load ; see Fig. 4, not shown. In Fig. 5, the switch S2 is shown constituted by a transistor T2. On the application of an input signal the transistor conducts to connect up the cancellation winding cw2 for a period determined by the difference in time constants between delay circuits P4, CP2, and P5, CP3.
Patent GB-376090-A (GB)
Title: Improvements in and relating to advertising apparatus
IPC: G09F19/18
Filed: 1931-09-17
Abstract: 376,090. Changing signs. WAITE, R. T., Porthmeor, Preston New Road, Blackpool. Sept. 17, 1931, No. 26022. [Class 3 (i).] Optical-projection apparatus.-Transparencies are held in frames 32 jointed together to form an endless chain which is moved intermittently around a flanged supporting cylinder 27. The transparencies pass between the condenser 23 and the objective 24 of an optical projection system, an aperture being provided in the cylinder 27 in the path of the light rays, and the lamp 16 being adjustable both horizontally and vertically. The bottoms of the frames 32 are formed as ratchet teeth 62 which are engaged in turn by a horizontally moving pawl 56. The pawl 56, Fig. 7, floats on a pin 57 and is swung laterally by a crank pin 58 mounted on a sector 53 rotating about a shaft 46 driven through gearing by an induction or other motor 38. The pin 58 moves in a slot in the pawl 56, and the vertical movement of the pawl is controlled by a spring 63 and by a pin 59 on the pawl resting on a pivoted arm 54 which lies in turn on the straight and circular edges 64, 65, 60 of the sector 53. Another cam 47 on the shaft 46 controls a switch which extinguishes the lamp 16 while the transparencies are changing. Switches 12, 13 control the lamp 16 and the motor 38 respectively, and a time switch 11 enables the apparatus automatically to function for given periods.
Patent GB-1508218-A (GB)
Title: Process for making a road surface
IPC: E01C7/35
Filed: 1975-06-18
Abstract: 1508218 Road surfacing FRANCE ENVIRONMENT MINISTER OF LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES 18 June 1975 26030/75 Heading EIG [Also in Division B2] A method for making a road surface comprises pre - treating gravel particles by coating them with 0.1 - 2% of their weight of a coating composition comprising at least one curable polymer which adheres to the particles, and anchoring the treated particles into a layer of binder on the road, the coating composition and binder being simultaneously in a fluid state during at least part of the anchoring stage and the coating composition being miscible with the binder so that it diffuses into the binder adjacent to each gravel particle. The coating composition may comprise a hot - curing polyurethane or a liquid or solid epoxy polymer together with a curing agent and may also comprise up to 85% by weight of pitch or bitumen. The binder may be a hydrocarbon' binder or a vinyl polymer plasticised with bitumen, asphalt, tar, pitch, petroleum oil or coal tar oil.
Patent GB-993572-A (GB)
Title: Improvements in or relating to apparatus for detecting the presence or absence of a pulse in a given time interval
IPC: H03K5/02
Filed: 1962-07-06
Abstract: 993,572. Transistor pulse circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. July 6, 1962 [July 10, 1961], No. 26034/62. Heading H3T. A pulse - responsive circuit comprises a normally - conductive transistor 13, periodically rendered non-conductive by a strobe pulse 16. A negative-going pulse at the base of transistor 13 during the time of the strobe pulse 16 increases the concentration of minority carriers at the collector hence the collector current in the time period following the strobe pulse 16 is indicative of the presence or absence of a pulse at the base during the time of strobe pulse 16. The circuit is preferably used for reading the output line 1 of a magnetic core store. Line 1 is coupled to an NPN amplifying transistor 3, pulses from which cut off a diode 10 and increase the base current of transistor 13. The PNP transistor 13 is rendered non-conductive during each strobe pulse 16, hence any pulse on line 1 at this time will inject minority carriers into the collector side of the base region. This charge results in a collector current pulse at the end of the strobe pulse 16 which is gated at 18 by a delayed strobe 17 and used to reverse the state of a bi-stable circuit 19. Interference pulses at non-strobing times do not affect the circuit 19 whilst some degree of immunity from interfering pulses occurring during the time of strobe pulses 16 can be achieved by controlling the timing of the delayed strobe 17.
Patent GB-758302-A (GB)
Title: Improvements in or relating to a container feeding mechanism for labelling machines and method of supplying containers thereto
IPC: B65G47/71
Filed: 1954-09-09
Abstract: 758,302. Conveyers. BARRY-VEHMILLER MACHINERY CO. Sept. 9, 1954 [Sept. 17, 1953], No. 26127/54. Class 78 (1). In means for feeding containers B, Fig. 1, to a labelling machine A, the containers are fed by a conveyer 37 in a disorderly manner to a position C in front of the machine from which they are directed singly by guides 33 on to endless conveyers 21 running between walls 22, 23. Means are provided for transferring periodically the leading container in each row from the conveyers 21 into the machine. Each pair of walls 22, 23 is adjustable laterally. Each guide 33, Fig. 2, comprises a curved member attached to a wall 23 and a co-operating flexible member 34 attached at 35 to the wall 22 for sliding motion thereon. The conveyer 37 consists of chains carrying flat plates and the containers are supplied to it in such numbers that at position C they accumulate and force each other into the guides 33. The containers are transferred from the conveyers 21 to conveyers 41 in the labelling machine by fingers 63, Fig. 3, mounted on swinging arms 58. These arms are mounted on a shaft 47 which is connected to a rod 52 actuated by a rotary cam device 55. The arms 58 project into the space between the walls of adjacent conveyers and the fingers 63 project through slots 60 in the walls. The fingers are carried by hubs which are mounted rotatably on the arms and are formed with projections 65 on the side remote from the fingers. These projections engage with a stop 66 at one end of an oscillation and the fingers are moved apart to take behind two containers B on adjacent conveyers, Fig. 12, and feed them to the left. As the arms swing to the right, the fingers fold towards each other by contact with a pair of containers and thus pass between them. Vertically movable pairs of pins 73, 77 are raised and lowered alternatively to pass one container at a time and to hold back the remainder. Each pin 73 has a triangular member 90 attached to its upper end which imparts a slight forward movement to each container to ensure correct engagement of the fingers with its back. Safety stop means responsive to the presence or absence of a container within the range of a swinging arm 58 is shown in Fig. 15. Each conveyer 21 has a feeler 100 pivoted below it which normally is kept depressed by the containers. The feeler is in contact with a rod 102 mounted in a block 104 attached to the reciprocating member 74. The rod 102 has a lost-motion connection with the block 104 so that it is not raised when the block moves upwards if its path is obstructed by the loaded feeler. When the feeler is not loaded, the rod 102 moves upwards carrying with it the cross-member 111. This member carries a tappet 113 which on engaging an arm 114 attached to a bar 115 rotates the latter to actuate a switch which shuts down the machine.
Patent GB-278189-A (GB)
Title: Improvements in or relating to carriers for motor-cycles
IPC: B62K27/02
Filed: 1926-10-20
Abstract: 278,189. Allard, W. E. Oct. 20, 1926. Luggage-carriers.-An auxiliary carrier bracket for a motor-cycle, to accommodate a suit case or other article of luggage, is detachably or integrally supported by the main carrier at its rear in an inclined position behind the rear wheel and at a lower level than the main carrier platform, whereby the latter can be used as a pillion seat. As shown, the auxiliary carrier bracket comprises side arms e, the upper ends e<1> of which are adjustably secured in clamps b on the main carrier a. To the side-arms e are secured by clips &c. e<2> a transverse bracing-bar e<3> and two pivoted stays d, which are detachably secured to the stays a<3> of the main carrier by clamps c. The lower part of the carrier bracket is bent as shown at e<4>, e<5> to receive a suit case &c., which is secured by straps f. A number plate g may be attached to the part e<5>.
Patent GB-1275631-A (GB)
Title: Sensitive materials for electrophotography
IPC: G03G5/06
Filed: 1969-05-22
Abstract: 1275631 Electrophotographic material RICOH KK 22 May 1969 [31 May 1968] 26140/69 Heading H1K An electrophotographic material comprises a support and a photoconductive layer thereon comprising a photo-conductor, a resinous binder and a merocyanine dye having a benzoselenazole nucleus and an oxazolone or thiazolone nucleus of specified formulµ. In the embodiments the dye is mixed with ZnO and polysiloxane and/or polyvinyl acetate together with triethylamine and coated as an organic solution on a support of Al or conductive paper.
Patent GB-1433138-A (GB)
Title: Cementitious compositions
IPC: C04B28/06
Filed: 1972-06-05
Abstract: 1433138 Cementitious coatings N WALLEY 5 Sept 1973 [5 June 1972] 26165/72 Heading C1H [Also in Divisions C3 C4-C5 and B21 A cementitious coating composition for protective and/or decorative coating of building and other civil engineering structures comprises calcined flint, hydraulic cement and glass fibres which are inert to the cement, the volume ratio of flint to cement being at. least 2 : 1. A highly alkaline cement can be used if alkali-resistant glass fibres are selected. High alumina cement can also be used. The calcined flnit may be of “inch or less particle size, and preferably includes particles of 100 B.S. mesh. Alkaliresistant glass fibres are disclosed in Specifications 1,200,732 and 1,243,973, the latter disclosing products of high ZrO 2  content. The low alkali borosilicate glass known as E-glass is suitable for use with a high alumina cement. The composition may contain 1-7% by wt. of glass fibre. A premix of glass fibre and calcined flint is also claimed. The coating may be applied by spraying an aqueous slurry of the flint, cement and glass fibre; alternatively the glass fibre may be separately sprayed. In another embodiment cementitious bodies are produced from a shaped viscous aqueous slurry of the flnit and cement in the stated ratio to which the glass fibre product has been applied, by allowing the composition to harden. The slurry may be moulded or pressed into shape.
Patent GB-1035610-A (GB)
Title: Improvements in or relating to control panels for domestic appliances such as electric cookers
IPC: F24C3/12
Filed: 1965-06-21
Abstract: 1,035,610. Control panel for cooking stoves. SIEMENS-ELECTROGERATE A.G. June 21, 1965 [June 20, 1964], No. 26227/65. Heading F4W. [Also in Division G1] The indicators 8 of a control panel for a domestic cooker having control knobs 6 are covered by a transparent shield 12 releasably attached to the cooker body. The shield 12 is mounted in a frame 11 secured to arms 10 pivoted to the stove body, and is held in place by spring clips 13. A transparent rear part 14 of the shield covers a strip light (not shown) for illuminating the indicators.