baber/WOPTO huggingface dataset:
Patent GB-1419477-A (GB)
Title: Production of exposure masks
IPC: G03F1/72
Filed: 1974-03-28
Abstract: 1419477 Exposure mask; exposing apparatus INTERNATIONAL BUSINESS MACHINES CORP 28 March 1974 [3 May 1973] 13761/74 Headings G2A and G2X A photographically retouched exposure mask is formed by (1) selectively exposing a layer of lightsensitive material, (2) examining the visible image to locate any defects due to areas of the layer being unintentionally unexposed, (3) selectively exposing these areas to form a further latent image and (4) completing the development to produce a fully developed non-defective visible image. Steps (2) and (3) may be effected in an apparatus Fig. 2 in which the partially developed mask 11 is illuminated by a light source 57 through a red filter 59 and condenser lens 61 and viewed through an objective lens 53 and an eye-piece 55; when a defect 21 is identified a larger magnification objective 56 is substituted for objective 53 and an image of an appropriately shaped aperture 63, illuminated by light from source 67 passing through a red filter 69 and a narrow pass filter 71, is projected on to the defective area; filter 71 is then removed so that light from source 67 forms a correcting latent image. The latent images may be reversal processed after development. The defined process may be part of a longer process for removing opaque defects in which a first formed mask is used to effect the exposure in step (1) and the fully developed mask is used to expose another mask.
Patent GB-1123515-A (GB)
Title: Process for the manufacture of maleic acid imide
IPC: C07D207/44
Filed: 1967-03-23
Abstract: Maleic acid imide is prepared by reacting maleic anhydride and ammonia in the gaseous phase while passing them over a dehydration catalyst.  The molar ratio of ammonia to maleic anhydride is suitably 1:1.3 to 1:20 and the reaction may be carried out in the presence of a gaseous diluent such as nitrogen, air or a suitable hydrocarbon. The gaseous products of a maleic anhydride synthesis may be used instead of pure maleic anhydride.  The reaction temperature is suitably 100-400 DEG  C. with a contact time preferably of 0.01-2 seconds.  The catalyst may comprise an oxide of Groups III to VII of the Periodic Table, e.g. aluminium oxide, or a phosphoric or polyphosphoric acid or sulphuric acid or a salt of these acids or a silicate or a mixture of these.  The catalyst may be supported on a carrier such as carbon or silicon carbide.
Patent GB-552407-A (GB)
Title: A hand-propelled machine for distributing insecticides, fertilizer and the like
IPC: A01M9/00
Filed: 1941-10-27
Abstract: 552,407. Manure distributers &c. STARKE, E. H. Oct. 27, 1941, No. 13782. [Class 6 (i)] Agitation of the fertilizer or like container 2 is effected by a tapping lever 1 1 mounted by brackets 10 on the frame 1, engaged at one end by laterally projecting pins 9 on the disc 8a on the wheel axle 7 and spring-pressed at its other end 13 against the top of the container. Two or more such arrangements may be. mounted abreast. The container 2 has a perforated base associated with a perforated disc 15 which may be moved by a nut 14 against the action of a spring 19 to adjust or prevent discharge.
Patent GB-136105-A (GB)
Title: A New or Improved Cable Grip.
Inventor: ROSA FRANCESCO LA
IPC: B63B21/08
Filed: 1919-05-31
Abstract: 136,105. La Rosa, F. May 31, 1919. No Patent granted (Sealing fee not paid). Brakes for ropes.-A rope-grip for use in refloating sunken.vessels, hoisting weights, &c. comprises a grooved pulley 2, a stop lever 8 geared to the pulley, and a brake 20 which is moved out of engagement with the pulley by the lever when the cable is pulled in the direction of the arrow 7. The periphery of the pulley 2 is provided with teeth 5 which gear with a small number of teeth 13 formed at each side of a groove 12 in an arm 11 at one end of the lever 8. The lever 8 turns on an eccentric pivot 9 which is supported by a pivot 10 in the side plates and is maintained in the position shown by a spring 22. The brake 20 is withdrawn by the rotation of an eccentric 19 formed on one end of an arm 15 which is pivoted at 16 and has a pin-and-slot connexion with the lever 8. If the grip is submerged, and it is desired to move the cable in either direction, the arm 8 is lifted by a lever 25 which is raised by a person above the surface of the water on pulling a chain 24. The cable may be freed when the grip is above water by rotating the pivot 10 of the eccentric 9.
Patent GB-755775-A (GB)
Title: Reflux prevention device for sewerage with a double trap
IPC: E03F5/042
Filed: 1954-05-12
Abstract: 755,775. Drainage and sewerage. LOFFLER, W. May 12, 1954, No. 13887/54. Class 33. A gulley 1 has an automatically operating non-return valve 19 closing under back pressure from the sewerage outlet pipe 9 and a manually actuatable closure valve 13 located directly beneath an inspection aperture normally closed by a cover 3 so that when the valve 13 is open (i.e. in the position shown in broken lines) the valve seat can be inspected by merely removing cover 3. The valve 13 is secured by means of a bar 15 rotated on a bolt 14 to engage under lugs secured to the horizontal part 10 of partiton 6, 7; one of these lugs is indicated at 16. A second cover 4 and a cover-plate 20 secured by wedges 22 and 23 allow inspection of flap valve 19, and a dirt-receiving bucket 5 is provided beneath grating 2.
Patent GB-168133-A (GB)
Title: A contrivance for adjusting the inflow of gas into a burner
IPC: F23D14/48
Filed: 1920-05-20
Abstract: 168,133. Alexander, C. J. May 20, 1920. Atmospheric gas burners.- A nipple-regulator for gas burners consists of a socket component, having an adjustable sliding valve, and a nipple component, having a perforated base, which is capable of being conjoined with the socket component to seat operatively the valve against the perforated base, and means for adjusting the valve. In one form, a socket component a is provided with a rotatably mounted transverse shaft c having an operating-wheel h<1>. A sliding valve d, having a screw-threaded hole, is mounted on the screw-threaded part of the shaft c within the socket component so as to be traversed across a gas-way e in the perforated base f of the gas nipple b, which is connected to the socket component by a screw-thread. The inner end of the shaft c may be supported in a notched ring g. The nipple b may have a single inlet aperture e and multiple small outlet apertures.
Patent GB-868634-A (GB)
Title: Ligature tier
IPC: A61B17/12
Filed: 1959-04-23
Abstract: 868,634. Ligaturing appliances. WOOD, E.C., LEVAUX, R. G., and BROWN, A. M. April 23, 1959 [May 5, 1958; March 10, 1959], No. 13901/59. Class 81 (2). A device for applying a ligature to a blood vessel comprises a pair of forceps for gripping the blood vessel and for holding a prepared loop of ligature around it, a slidable carriage for pulling on the free end of the ligature and tightening it around the blood vessel and a blade for cutting off the excess length of ligature. The forceps have jaws 18, 20 pivoted at 22, operated by handles 12, 25 with holding lugs 30, 32. The ligature 120, previously formed with a loop and slip-knot, is placed around the jaws with its free end passed through a bore in the upper jaw and gripped by a spring-loaded clamp 64 mounted on a slidable carriage 34. Thus, with the blood vessel gripped by the jaws 18, 20, retraction of the carriage, by means of finger loop 46, draws the ligature on to the blood vessel and then pulls the loop tight. At the end of the travel of the carriage, a surface 50 engages a pivoted spring-loaded lever 108 and causes it to push a blade 92 forward in a guide 88, so that its further end, which is sharpened, cuts off the ligature close to the knot. Suitable ligatures, having preformed loops, are preferably stored mounted on a shaped card which holds it in position ready for mounting on the appliance. A simplified form of the appliance is described with reference to Figs. 15-17 (not shown). In this the free end of the ligature is attached to the sliding carriage by means of a second loop engaging a hook on the carriage and the cutting- blade is pressed forward by an independent action of the thumb pressing on its rear end.
Patent GB-1368468-A (GB)
Title: Polyester compositions for use as mortars
IPC: C04B26/18
Filed: 1971-05-10
Abstract: 1368468 Artificial stone CELMACAG 3 May 1972 [10 May 1971 16 Dec 1971 (3)] 13949/71 58406/71 58407/71 and 58408/71 Heading C1H [Also in Divisions C3 and E1] A mortar comprises (A) an uncured polyester having a low viscosity and adapted to be cured into a highly flexible solid, (B) an uncured polyester adapted to be cured into a substantially rigid solid, these polyesters each being dissolved in a copolymerizable monomer, (C) a redox catalyst system and (D) an inorganic filler, the mortar exhibiting a volume shrinkage no greater than 1% on curing and the relative proportions of components (A) and (B) being such that after curing, the weight ratio of the highly flexible solid polyester to the rigid solid polyester is 2 : 1 to 5 : 1 and includes a coarse aggregate. In the examples the fillers and aggregates used are alumina, silica, fused bauxite fines and Criggion green.
Patent GB-1210233-A (GB)
Title: Liquid fuel injection pumping apparatus
Inventor: KEMP KENNETH ALBERT WALTERS
IPC: F02M41/14
Filed: 1967-03-28
Abstract: 1,210,233. Fuel injection pumps. C.A.V. Ltd. March 11, 1968 [March 28, 1967], No.14059/67. Heading F1A. A piston 23 of a fuel injection pump is hydraulically actuated and towards the end of its discharge stroke, closes the discharge passage 26 to create a hydraulic lock. Discharge ceases when a groove 24 in the piston connects the discharge passage 26 via passage 27a to a spill passage 29 which is gradually closed by the piston 23 as it moves to the right until it is arrested by the hydraulic lock; at the same time a relief passage 31 for the actuating liquid is opened by the piston 23 and actuating liquid is returned to source through a pressurizing valve 55. The piston 23 is disposed in a bore in a rotating distributer 11 and during discharge the passage 26 communicates in turn with discharge ports 27 each of which has a suck-back valve 56. The piston 23 is returned by feed pressure applied to each end through the throttle 53, the distance it moves to the left governing the quantity discharged on the subsequent stroke.
Patent GB-514639-A (GB)
Title: A process for the manufacture of photographic colloids
IPC: G03C1/825
Filed: 1938-05-11
Abstract: 514,639. Photographic materials; colour screens. GASPAR, B. May 11, 1938, No. 14068. [Classes 97 (i) and 98 (ii)] Colloids for photographic use, e.g., as filter layers, and silver halide emulsions are coloured by solutions of water-insoluble dyestuffs produced with the aid of hydrotropic wetting- agents and mixed with a binding agent, a solution of a binding agent or with a silver halide emulsion. In examples, (1) the red dye from diazotized p-nitraniline and dimethyla-naphthylamine is dissolved by heating with a solution of the sulphuric acid ester of the butyric ester of ricinolic acid; (2) Cibacetblau B is dissolved in a solution of -the sodium salt of sulphonated castor oil; (3) the dye from diazotized amino - pyrazolone and #- naphthol is dissolved in a solution of the material known under the Registered Trade Mark "Sapamine MS"; and (4) the dye from diazotized 4-chlor-2-amino-diphenylether and aminohydroquinone-dimethyl ether is dissolved by means of the material known under the Registered Trade Mark "Nekal BX." Colloid and emulsion layers are coloured by adding the above solutions. Dyed gelatine produced as above may be concentrated by distillation in vacuo. The -process may be used to produce multi-layer material.
Patent GB-651546-A (GB)
Title: Improvements in gramophones
IPC: G11B25/04
Filed: 1948-05-25
Abstract: 651,546. Gramophones. MURPHY RADIO, Ltd., and ROWLINSON, R. May 25, 1948, No. 14129. [Class 40 (ii)] In a gramophone, a counter is moved one step during an operation involved in playing a record, and an indicator is operated by the said counter after a predetermined number of said steps, for the purpose of indicating when needle changing is necessary. In the embodiment described an insulating disc 11, Fig. 4, is mounted with a ratchet wheel 14 on a collar 9 revolvably mounted on a post 2. The disc 11 and ratchet wheel 14 is maintained in frictional engagement with the collar 9 by means of a spring washer 13. Below the collar 9, there is freely mounted on a stepped nut 16 a pawl-bearing arm 15 one end of which is anchored by a spring 17, while the other end is connected to a moving part of the gramophone mechanism, indicated in Fig. 2, by a link 18 pivoted about a point 19. The pawl 20 is in the form of a leaf-spring and bears on the teeth of the ratchet wheel 14. The insulating disc 11 serves to hold the end 22 of a spring stirrup 21 out of contact with an electrical contact 23 until the insulating disc 11 has been moved sufficiently for a gap 12 therein to permit the end 22 of the stirrup 21 to pass through. A warning light 24 is lit thereby. The spring stirrup 21 is made to yield laterally and is so arranged with regard to the teeth of the ratchet wheel 14 that the stirrup 21 drops through the gap 12 before the ratchet wheel has completed the movement which brings the notch into register with the stirrup. This causes a selfcleaning action on the contact 23 and also has the consequence that when the stirrup is released by a push rod 25 the end 22 springs back laterally and lodges once again on the insulating ring 11 ready for the next revolution of the said insulating ring 11.
Patent GB-577340-A (GB)
Title: Improvements in or relating to pumps for charging two-stroke internal combustion engines
IPC: F04B7/00
Filed: 1944-07-24
Abstract: 577,340. Piston pumps. LLOYD, F. R. July 24, 1944, No. 14130. [Class 7 (ii)] [Also in Group XXVIII] In a double-acting charging pump for a twostroke engine, the pump piston a and a sleeve valve b attached to it have combined reciprocatory and oscillatory movement, and inlet and exhaust ports in the sleeve valve register with a single inlet port j and two angularly disposed exhaust ports k in the cylinder wall. Inwardly projecting cylinder heads d. e limit the pump clearance. The piston is mounted on a rod h carrying a radial pin q which slides in a ball r of a ball joint carried eccentrically by a needle bearing in a crank disc u. This disc is mounted on a lay shaft v which is rotated by a sprocket y and chain, by the engine, or by a separate prime mover.
Patent GB-1400831-A (GB)
Title: Flowmeters
IPC: G01F1/32
Filed: 1972-03-24
Abstract: 1400831 Measuring fluid mass flow electrically UNITED KINGDOM ATOMIC ENERGY AUTHORITY 13 March 1973 [24 March 1972] 14130/72 Heading G1N A mass flowmeter comprises a fluidic oscillator, for example a wall attachment oscillator as in Specification 1297154 (see Division G1), a transducer sensing changes in the pressure of fluid flowing through the oscillator and converting the changes to signals representative of the amplitude and frequency of the changes, an integrating amplifier (or filter) and an A.C. voltmeter determining the value of the integrated signal. Thus if pressure change X = K2pV<SP>2</SP> cos wt where K2 is a constant, p is density, V is volume flow and w is the frequency of oscillation and is proportional to volume flow V; then after integration (considering p and V as constants since they change slowly) the result is X 1  = - K 2  #V<SP>2</SP>/W sin wt = K 3 #V sin wt, since w is proportional to V which is porportional to mass flow (pV).
Patent GB-1159622-A (GB)
Title: A moulding plastics blank for use in the Manufacture of a hollow plastics container
Inventor: REDMOND SANFORD
IPC: B65D1/00
Filed: 1967-03-28
Abstract: 1,159,622. Sheet forming. S. REDMOND. 28 March, 1967 [28 March, 1966; 27 Feb., 1967], No. 14159/67. Heading B5A. [Also in Division B8] A plastics container is drawn from a blank 10 comprising a central portion 12 surrounded by corrugations 20-34. By adjusting the thicknesses of the various portions of the blank, a container having the desired thickness distribution and utilizing the minimum amount of material can be made. As shown in Fig. 3B, the blank is peripherally clamped and the centre portion drawn to straighten the corrugations by a plunger 42. The resultant body may comprise the desired article or may be expanded by gas pressure against a surrounding mould having a cavity of the desired configuration (see Fig. 4, not shown). In an alternative embodiment the blank is drawn by a heated plunger having a shape corresponding to the intermediate body before expansion into the surrounding mould (see Figs. 6A-6E, not shown).
Patent GB-1526133-A (GB)
Title: Methods of decarburization of molten esr slags and reduction of carbon pick up in corrosion resistant alloys
IPC: C22C1/02
Filed: 1976-04-08
Abstract: 1526133 Decarburizing ESR slags CABOT CORP 8 April 1976 [9 April 1975] 14129/76 Heading C1K [Also in Division B3] A method of decarburizing ESR (electro-slag remelting) starting slags comprises adding a sufficient amount of Fe 2 O 3  to the molten slag to react with sufficient carbon to evolve volatile oxides of carbon and reduce the carbon in the slag to the desired level. The molten slag may be a CaF 2 -based slag.
Patent GB-1062823-A (GB)
Title: Improvements in or relating to buildings and parts thereof and to methods of building
IPC: E04C2/38
Filed: 1964-04-06
Abstract: 1,062,823. Erecting wall slabs. C. V. BLUMFIELD and E. D. J. MATHEWS. April 5, 1965, No. 14335/65. Headings E1A and E1B. In a building, Fig. 10 (not shown) comprising square steel columns 57 of storey height supporting storey-high concrete wall panels which have been cast flat on site and lifted into position, and which support concrete ceiling panels, each wall panel has at each of its upper comers a lifting lug 29, Fig. 16, welded at right angles to a fixing plate 30, the fixing plates 30 of adjacent panels being secured to each other and/or to straps on the column 57 by welding or bolting. The panels may be temporarily supported by pivoted plates 77 on a square strap 60 slidable on the column. The lifting lugs 29 and plates 30 may be anchored to the panel by embedded rods, Fig. 9 (not shown) or, using the panels described in Specification 1,062,822, may be welded to a strip metal peripheral frame. The metal frame may also be welded to the columns 57. The columns 57 are extended upwards by further columns fitting in or over their upper ends. The joints between columns and panels may be covered externally by cement or by attached fireproof material.
Patent GB-1077473-A (GB)
Title: Improvements in or relating to automatic telephone systems
Inventor: SCOWCROFT JOHN ANTHONY
IPC: H04Q3/00
Filed: 1965-04-06
Abstract: 1,077,473. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. April 6, 1965, No. 14471/65. Heading H4K. To meet the demands of increased traffic or the modifications consequent on the adoption of a National Dialling Scheme, an existing exchange employing rotary power driven revertively controlled switches is augmented by a cross-bar exchange using self-steering techniques. The scheme illustrated shows in Fig. 1 part of the rotary exchange in which 15 normal line finders 1LFN connect a calling line to a so-called cord circuit CC unless, in conditions of peak traffic, all but one of these line finders is employed when the connection is made by 5 first line finders 1LFP and second stage line finders 2LF. To each cord circuit there is a trunk access circuit TAC1 which calls upon the services of a register RREG by way of link circuit LC containing register and group selector finder switches. If a call requires connection over the cross-bar trunk exchange CTE, to the right of Fig. 2, the dialled code starts with digit 9 and causes the register RREG to put positive battery on the C-wire to operate relay LR in cord circuit CC. The cord circuits are connected to outlets of a two-stage cross-bar distributer DSA1, DSB1 providing connection between a cord circuit, marked as calling by earth from a marker LMKR (not otherwise shown) when relay LR operates, and a relay set of a junction relay group OJRG of the crossbar trunk exchange. The earth mark from CC on lead N operates select magnets in preparation for the operation of bridge magnets, and free links LKS to which the marked outlet has access are marked. In each selector in the stage DSA1 having a marked link LKS at least one select magnet is marked by the operation of a control relay which also initiates forward marking from outgoing junction relay groups OJRG available to the DSA1 selector. Test relays in the stage DSA1, in conjunction with marker LMKR, select an available group OJRG and, on operating the associated select magnet and bridge magnets, set up the wanted connection over the distributer. In the cord circuit relay K responds over the P wire, releasing the register RREG and the marker LMKR. In the cross-bar trunk exchange an incoming trunk relay group ITRG is seized and a register CREG is taken into use to receive subsequent digits from the calling subscriber.
Patent GB-240391-A (GB)
Title: Improvements in tipplers for discharging tubs in mines and like confined places
IPC: B65G67/00
Filed: 1925-06-04
Abstract: 240,391. John, D. June 4, 1925. No Patent granted (Sealing fee not paid). Tipping-apparatus. - A portable tipping- apparatus for use in mine galleries &c. comprises a cradle a provided with hooked supports e for engagement with rollers f on an adjustable shaft g forming the tipping axis. The shaft g is mounted at any desired height on the pillars i. The cradle may have flanged wheels b running on tracks d, Fig. 1, or the cradle itself may run over rollers w, Fig. 7. The cradle is tipped by hauling on ropes j, and when the shaft g is set low, as shown in Fig. 4, the first action of the hauling ropes is to bring the hooks e into engagement with the rollers f. The ropes or chain j are wound on hand or power-operated drums, and tail ropes d are provided to control the tipping and for righting the cradle. The load may be partly balanced by weights o. The tub discharges over a shoot u, which serves to keep the hooks e in place.