baber/WOPTO huggingface dataset:
Patent GB-962654-A (GB)
Title: Projection apparatus
IPC: G03G15/30
Filed: 1960-08-31
Abstract: 962,654. Projection apparatus. RANKXEROX Ltd. Aug. 31, 1960 [Aug. 31, 1959], No. 29986/60. Heading G2A. Projection apparatus includes transport means for moving opaque originals to be projected at a variable rate across a projection station, a focusable optical projection system of variable optical path length for projecting an image of a portion at the projection station of the original through an exposure slit of variable width, and mechanisms for adjusting the transport rate, the focus, the optical path length, and the width of the slit, in accordance with a selected magnification ratio at which it is desired to produce the image of the original. The projection apparatus, is shown in Fig. 1 as applied to a xerographic reproducing apparatus of known layout in which the photoconductive surface 11 of a rotating drum 10 passes in sequence a charging station 20, an exposure station 5, a cascade developing device 21, a lamp 49, a transfer station 14 at which the powder image is transferred to a paper web 18 for fixing at heat device 22, rotating brushes 19 for removing any remaining developing powder and a further lamp 25. The projection apparatus of the invention comprises a tray 41 for receiving originals to be copied, transport means for the originals comprising endless belts 50 passing round rollers 48, 49 and being driven by a motor 57 through a variable transmission 4, a guide 83 for directing original sheets to a lower tray 88, a lamp 3 for illuminating the originals as they pass below a transparent plate 81, a mirror 91 for directing light rays from originals below said plate 81 through a projection lens 126,and a further mirror 127 which-in the position shown-directs image forming rays from the lens 126 and to the xerographic drum 10 rotating with constant speed below an exposure slit at 5. The mirror 127 may be pivoted into a vertical position so as to allow microfilm projection apparatus shown above tube 259 to be used. When the magnification ratio of the first mentioned projection apparatus is to be changed the transport rate is adjusted by means of a handle 110 coupled to the variable transmission 4, the optical path length is adjusted by means of a handle 95 coupled to a frame 33 slidable in the direction of the axis of lens 126, and the focus of axially movable lens 126 is adjusted by means of a handle 133; indicating means 119, 108 and 146 (cf Fig. 2, not shown) coupled to the respective adjusting handles being provided for enabling correlation of the various settings to be obtained. The exposure slit of Fig. 5 comprises two flaps 169 and 170 pivoted at the lower end of a light tube 163 and coupled for movement together in opposite directions by intermeshing pinions 180, 181; an adjusting knob 176 and scale 182 being provided for correlating the setting of slit width with the chosen magnification ratio. Details of construction are described with respect to Figs. 2 and 3, not shown.
Patent GB-868785-A (GB)
Title: Dispensing heads for aerosol containers
IPC: A61M15/00
Filed: 1957-09-25
Abstract: 868,785. Forcing liquids by gaseous pressure. STERLING DRUG Inc. Sept. 25, 1957 [Oct. 5, 6591]. No. 30100/57. Class 102(2). An actuator for the valve stem 16 of an aerosol dispenser has a passage 38 having a shoulder 40 for receiving and actuating the stem 16 and an open ended chamber 20 through which the contents are discharged. When the actuation is removed from the stem 16 the chamber 20 can be fitted over a shoulder 46 on the aerosol and the end 44 is adapted to receive a cap 12. Air passages 56 are provided through the actuator. The outlet passage 32 is covered by a baffle and communicates with a hole in the baffle by elongated passages 48. Specification 830,427 is referred to.
Patent GB-192211-A (GB)
Title: Improvements in cushion tires and in the method of and apparatus for making the same
IPC: B29D30/02
Filed: 1921-11-11
Abstract: 192,211. White, A. E., (Goodrich Co., B. F.). Nov. 11, 1921. Moulding wheel tyres.-A cushion tyre. 10, Fig. 1, is moulded on a foundation band 17 with core members 19 which are finally removed through one or mcre slots in the, band, leaving a channel in the tyre in communication with the slots. Preferably hard rubber 16, Fig. 2, is applied to the band 17 and is cut away at the slots, a split ring 20 is then placed in the band 17 and the members 19 are assembled in the slots, the last member being placed between the slightly projecting ends of the adjacent members and forced on to the ring 20. Softer rubber layers are wound on by rotation of the band and cores in a vertical plane and after vulcanization in a rigid mould, the ring 20 and the members 19 are removed through the slots, a hook 32 being used for this purpose. The members 19 may be assembled from inside the band 17 and be forced outwardly by the ring 20. The hard rubber 16 may be applied after the assembly of the members 19 so that it may be warm when the softer layers are applied. The members 19 may have tongue and groove connection between adjacent ends. A rubberized tape may be laid along the ridge of the members 19 to prevent relative displacement, the tape being left in the completed tyre. The band 17 may be in two side rings connected by the bridge-pieces 18 between the slots. The bridge-pieces are preferably permanently united with at least one side ring. The tyre may be used on a perforated fellce.
Patent GB-299423-A (GB)
Title: A machine for waxing, polishing, painting, staining and similarly treating surfaces
IPC: A47L11/16
Filed: 1928-10-18
Abstract: 299,423. Woods, (nÚe Morgan), J. E. Oct. 26, 1927, [Convention date]. Floors, cleaning.- A machine for waxing, polishing, and similarly treating surfaces, comprises one or more rotary members for applying wax or other surfacetreating medium, means being pro vided, acting inter. mittently in accordance with the rotation of the applying members, whereby an automatic reciprocatory forced feed of the wax or other medium is obtained. In the construction shown, a floorwaxing machine is provided with two rotary brushes 46 adapted to be driven in opposite directions, through worm gearing, by an electric motor 1. Each brush is secured to a member 43 which is screwed to a hollow shaft 26 provided with four apertures 28. The shaft is rotatably mounted within a unit 17 which is provided with a groove 23 adapted to communicate by an aperture 25 with a passage 67 leading to a tank 58 containing wax. The groove 23 is in communication with the centre of the shaft 26 by way of the four openings 28. Within the axial bore of the shaft 26 is located a reciprocatory pin 29 provided at one end with a conical head 29a and at the other end with a sleeve 32 carrying a collar 33 and adapted to be pressed upwardly by a spring 31. As the shaft 26 rotates, the collar 23 engages intermittently a cam surface on a member 38, whereby the pin 29 is given sudden movements downwardly causing the bead 29a to express wax through an apertured cap 48. The wax in the tank 58 may be heated by means of an electric heating unit mounted within the tank.
Patent GB-923403-A (GB)
Title: Process for the preparation of cellular polyurethanes
IPC: C08J9/00
Filed: 1959-09-04
Abstract: Cellular polyurethanes are obtained by reacting an organic di- or tri-isocyanate or -isothiocyanate, water, an alkylene oxide condensate of mol. wt. at least 500, and a siloxane-oxyalkylene block copolymer.  Lists of suitable ingredients are given and include 2,5 toluene diisocyanate, hexamethylene diisocyanate; condensates of alkylene oxides with triols or tetrols; and monomeric polyols, e.g. trimethylol propane together with the alkylene oxide condensate. Catalysts, e.g. tertiary amines and phosphines, may be present. Specifications 767,682 and 923,404 are referred to.ALSO:Cellular polyurethanes are obtained by reacting an organic di- or triisocyanate orisothiocyanate, water, an alkylene oxide condensate of mol. wt. at least 500, and a siloxane oxyalkylene block copolymer. Lists of suitable ingredients are given and include 2, 5 toluene diisocyanate hexamethylene diisocyanate; condensates of alkylene oxides with triols or tetrols; and monomeric polyols e.g. trimethylol propane together with the alkylene oxide condensate.  Catalysts, e.g. tertiary amines and phosphines, may be present.  Specifications 767,682 and 923,404 are referred to.
Patent GB-190328-A (GB)
Title: An improved trousers stretcher
IPC: A47G25/66
Filed: 1921-11-14
Abstract: 190,328. Evans, W. V., and Fuller, E. C. Nov. 14, 1921. Trouser stretchers. -A device for stretching trousers by means of members a, b, inserted in the legs have these parts made of thin sheet metal or metal strips adapted to be folded or doubled upon themselves lengthwise with or without the use of hinges. The parts a, b have enlarged ends spaced by resilient members d which may be integral with the side members. Otherwise the parts d may be made of steel wire the ends of which are bent backwards at d<2> and passed through a slot e in the side member then bent as shown beneath the membor and anally passed through one of a series of holes f. The wire springs d pass alternately above and below the side members which are stiffened by ribs c. For convenience in packing. the members a, b may be in three parts hinged at x with a spring rule joint to resist collapse.
Patent GB-685256-A (GB)
Title: Pilot gas burner regulators
Inventor: AISHEN ARTHUR
IPC: F16L55/027
Filed: 1950-12-12
Abstract: 685,256. Supplying gas to pilot jets. RADIATION. Ltd. Oct. 9, 1951 [Dec. 12, 1950]. No 30316/50. Class 75(iii) [Also in Group XXIX] A regulator for the gas flow to a pilot burner comprises a hollow body a having a stepped cylindrical bore and an inlet b through which the gas enters and passes through filtering material h, e.g. cotton wool or glass fibres, contained in a perforated cylindrical bush d slidable axially by means of a fingerpiece k to vary the length thereof lying within the narrow part of the bore in which bush d is a sliding fit, so that gas flows from the filter in a regulated quantity through the perforations g of the bush within the wider part of the bore, and thence to an outlet c leading to the pilot burner. The inlet end of the bush d is closed by gauze e or by a perforated wall.
Patent GB-503434-A (GB)
Title: Improvements in the construction of dynamo electric machines
IPC: H02K9/24
Filed: 1937-11-05
Abstract: 503,434. Cooling dynamo -electric machines. ENGLISH ELECTRIC CO., Ltd., ROBERTS, L., BALL, R. D., and TEAL, J. Nov. 5, 1937, No. 30387. [Class 64 (iii)] The air within a totally enclosed flameproof dynamo-electric machine 1 is circulated by a fan 7, Fig. 2, through a casing containing cooling tubes 4, one wall of the casing being formed by a partition wall 3 of the machine casing, while the other consists of a cover 2 of semicircular form secured to the machine casing. A modified form of cover is shown in Fig. 3. External air is circulated through the tubes 4 by a fan 6. Water may, however, be used as the cooling medium. The cover may be secured to the casing as shown in Fig. 5. The cooling tubes, which may be replaced by a plate form of heat-exchanger, could be disposed either above or below the machine.
Patent GB-283315-A (GB)
Title: Improvements in concealed hinges
IPC: E05D3/02
Filed: 1926-12-01
Abstract: 283,315. Allen, C. H. Dec. 1, 1926. Concealed hinges for doors and other articles are provided with positive mechanical means for giving one part of the hinge a combined rolling and sliding movement relative to the other part when one of the parts of the hinge is turned. In Fig. 3 the casing 1 housed in the door framework 6 is formed into slots 8 in which slides a pivot pin 7 when the door 4 and the other hinge member 3 are opened, teeth 9 on the part 5 engaging pins 2 so that a sliding and rolling movement of the hinge member 3 is produced. An end of each of the slots 8 mav be curved and open. Instead of the slots, cam grooves may be used, and rack teeth may be employed in place of the pins 2. A concealed spring hinge may be formed similarly, as shown in Fig. 8; by using inclined grooves instead of the slots 8 a rising hinge may be formed. In the arrangement shown in Fig. 10, flexible bands 34 serve in place of the rack teeth. According to the Provisional Specification, the rack-and-pinion may be replaced by a disc running upon a friction surface.
Patent GB-271913-A (GB)
Title: Improvements in or relating to photographic film-packs and holders therefor
IPC: G03B17/34
Filed: 1925-12-02
Abstract: 271,913. Storr, B. V., and Ilford, Ltd. Dec. 2, 1925. Change-boxes, self-contained.- In a pack of the kind wherein the fllms are attached to pulling tabs, whereby they may be drawn one at a time from a front exposure compartment into a rear storage compartment round the end of a partition which serves as a film supporting frame, this frame is formed from a single piece of sheet metal bent into U-shape, Fig. 2, the rear limb 12 of the U being cut away near the bend to provide narrow resilient strips 15 which form the sole connection between the limbs, and together with pressed-up tongue 14 serve to press the front limb 10 against the films in the exposure compartment. The top of the limb 12 is bent at 16 to form a housing for two strips of velvet 17 forming the tight-trap. Flanges 11 are formed on the. front limb 10 to stiffen it, and flanges 13 on the rear limb 12 convert this into a tray for receiving the films. A tongue 18 is formed by notching, the top of the limb 10, and over this is slipped a loop of thread 22, Fig. 5, passing through the ends 20 of the film backing papers. When a film has been exposed, and its tab is pulled, the backing tears away from the thread 22 without disturbing the remaining films. The films and their supporting frame are mounted in a casing 7 closed at one end 9 by a cap, and having a slot at the other end through which the ends of the film tabs emerge. Casing and cap are preferably each formed by bending a single piece of sheet metal. To ensure protection against light passing between the casing and the cap, a black paper apron 24 is passed round the films, the apron extending from the edge of the exposure opening, round the bend of the U, and thence to the light trap 17 where it is folded is at 25 and slotted at the fold for the passage of the films. To facilitate threading of the film tabs through the light trap on assembling the pack, the outer tab is made longer than the remainder, round which it is folded as at 23<a>.
Patent GB-602986-A (GB)
Title: Improvements in and relating to regulating the discharge of slag in pressure-fired furnaces, gas-producers and the like
IPC: F23J1/08
Filed: 1945-11-14
Abstract: 602,986. Furnaces..AKT.-GES. BROWN, BOVERI, & CIE. Nov. 14,1945, No. 30514. Convention date, March 1. [Class 51(i)] Slag is discharged from pressure-fired furnaces, gas-producers and the like, into a closed chamber, and the slag-flow is controlled by regulation of the pressure of the atmosphere of the chamber. As shown, the passage 5 connects the slag-pool 3 to the chamber 6 which has an inlet 9, controlled by a valve 10, for the admission of air, steam or gas, e.g. hot waste gases, and an outlet 11 controlled by a valve 12, which may be connected to an exhauster. The slag issuing from the passage 5 is granulated by water nozzles 7, and solidified slag may be removed from the passage by a drill 13 on a driving-shaft 14 which passes through a stuffing-box 15. Slag sand and water is discharged through a suitable valve 8. The flow of slag is reduced or stopped by opening valve 10 and closing valve 12, so that gas flows in regulable volume through the passage 5 into the combustion chamber. By closing valve 10 and opening valve 12 and, if necessary, using suction, the flow of slag is increased.
Patent GB-635386-A (GB)
Title: Method of and apparatus for crimping the marginal portion of sheet material
IPC: A43D11/00
Filed: 1947-11-18
Abstract: 635,386. Compacting or contracting sheet material edges. KAMBORIAN, J. S. Nov. 18, 1947, No. 30577. Convention date, May 4, 1944. [Classes 17 (i) and 141] A machine for mechanically contracting the edges of sheet material, such as a vamp of a shoe, comprises means to apply a positive advancing force along the edge of the sheet material and means to concurrently apply a retarding force spaced forwardly in relation to the advancing force to oppose the latter while allowing the material to advance continuously so that the edge of the material is crowded together between the points of application of the two forces. A shaft 10 journalled in a bearing 11 carried by a front panel 12 is indirectly coupled to an electric motor through a reduction gearing unit mounted on a base plate 1 and projects forwardly through the panel 12 to accommodate at its end a roll 13 with teeth or similar work gripping means. A roll 17 of the same character as the roll 13 is fixed to the rearward end of a shaft 16 journalled in the free end of an arm 15 pivoted to the panel 12 at 15a. The forward end of the shaft 16 is screw-threaded for the reception of a nut 45 which bears against a spring 20 pressing against a brake collar 21 keyed to the shaft 16 so that the frictional force opposing the rotation of the roll 17 is variable. A spring 23, interposed between a bracket 26 mounted on a panel 12 and the arm 15, urges the roll 17 down on a workpiece 11 placed on a work rest 27. The latter has a groove 31 to receive the edge of the material U and is carried by an arm 28 pivoted at 29 and having the underside of its free end connected to a cable 37 leading downwards to a treadle and its upper side connected to a spring 30 having its other end connected to a screw fixed to the panel 12 so that the rest 27 is urged against the rolls 13, 17. A chamber 32 in the arm 28 receives a heating unit 33 whose leads 34 pass through a slot 35 in the panel 12 to be independently controlled by a switch 38 which also controls the motor. A casing c encloses the unit.
Patent GB-729950-A (GB)
Title: Improvements in or relating to additive mixing circuits for frequency changing such as are employed in superheterodyne radio receivers
IPC: H03D7/08
Filed: 1952-12-03
Abstract: 729,950. Superheterodyne circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Dec. 3, 1952 [Dec. 4, 1951], No. 30605/52. Class 40 (5). In a self-oscillatory short-wave frequencychanging circuit of the additive mixing type, the signal input circuit constitutes a balanced bridge network into which the local oscillations are fed at points of symmetry. The arrangement is stated to give an improved signal-to-noise ratio. Local oscillations are generated in a Hartley type circuit comprising tuned circuit 5 connected between screen and signal grids 4, 3 respectively, H.T. being fed to the screen grid 4 via a dropping resistance 8, a choke 10 and tap on the circuit 5. The local oscillator circuit 5 is connected at one end to a capacity-tap on the signal input circuit 2 and at the other to the join of a pair of condensers in series across circuit 2, one of which comprises adjustable condenser 14 and the other the screen to signal-grid capacity of the valve. Adjustable condenser 15 forms with the signalgrid to cathode capacity a further seriesconnected pair across the circuit 2, the common point of which is earthed. Condensers 14, 15 are adjusted to balance the network with respect to the points of connection of circuit 5 (Fig. 2, not shown). I.F. output is taken from the anode of the valve by means of a tuned circuit 6. Another embodiment, Fig. 3 (not shown), uses a triode valve, circuit 5 being connected to anode instead of screen-grid; the I.F. output circuit is then located between the choke and the series dropping resistance.
Patent GB-163068-A (GB)
Title: Improvements in ships cabins
IPC: B63B3/68
Filed: 1919-12-09
Abstract: 163,068. Macmillan, M. Dec. 9, 1919. Cabins.-In collapsable cabins, the fitting on the partitions for engagement with the framework of the ship or with the leeboards and berths all lie within the plane of the partitions to allow the partitions to lie flat when stacked. The partitions are provided with terminal shoes, the lower formed with a rounded head 1 for engagement with deck sockets 2, the upper being bevelled to facilitate the passage of the partition past gravity bolts 5 mounted on a deck beam. Frames 6 fitted with wire gauze are fixed above the tops of the partitions. The lee boards 7 are furnished with fixed pins 9 engaging with sockets 10 in the partitions and also with sliding bolts 12 taking into similar sockets. The brackets 13 for supporting the angles of the berths 14 are hinged in recesses in the partitions where they lie when the latter are stacked.
Patent GB-1064548-A (GB)
Title: Regeneration loop for use in high speed memories
IPC: G11C11/06
Filed: 1964-08-04
Abstract: 1,064,548. Electric digital data storage. RADIO CORPORATION OF AMERICA. Aug. 4, 1964 [Aug. 7, 1963], No. 30800/64. Heading G4C. [Also in Division H3] A circuit more particularly for use in a register forming part of a destructive read-out and re-write system of a matrix store comprises a bi-stable negative resistance device controlled by a sense amplifier through a diode which may be rendered non-conductive by a switching circuit connected to its input electrode. A tunnel diode 140 is biased by a constant current supply 142, 144 to have two stable states producing opposite sense outputs via an amplifier comprising transistors 150, 182 and a non-saturating emitter coupled pair 150, 164. The circuit may be " set " by applying a pulse to terminal 202 to cut-off transistor 204 so that an increase bias is supplied through resistor 216 to the tunnel diode. Reset may be effected by a pulse at 226 which saturates transistor 220 and removes the constant current supply. Destructive sensing of the state of the circuit may be effected by applying a set pulse through a sense amplifier 20 to increase the current through lead 102, a change in output condition indicating the state of the circuit. The sense pulse is applied coincidentally with a strobe pulse at 120 which cuts off a clamping transistor 112. Normally the transistor is saturated so that it renders a diode 146 non- conducting and by-passes the current in lead 102, rendering the circuit insensitive to spurious pulses in the sense circuit. The sense amplifier output transistor is switched between low-current and high-current states but does not cut-off or saturate. To this end a diode 96 is effectively connected across the emitter resistor 90 and arranged that it short circuits the emitter resistor for low level signals but not for high level signals, so providing degeneration and preventing saturation. When used for destructive read-out of a matrix of magnetic cores or corresponding discrete areas of thin film (Fig. 1, not shown) the sense amplifier is connected to a digit line (12) and sets the tunnel diode, which forms part of a memory register, in accordance with the signal read-out, this signal being fed back to control appropriate gates (34) or (28) which apply a pulse to the digit line to rewrite the information in the store.