baber/WOPTO huggingface dataset:
Patent GB-575685-A (GB)
Title: Improvements in or relating to well drilling
IPC: E21B7/06
Filed: 1943-11-11
Abstract: 575,685. Well - drilling. ZUBLIN, J. A. Nov. 11, 1943, No. 18748. [Class 85] [Also in Group XXVIII] In drilling a well bore deviating from an existing well bore, and particularly for drilling deviating bores within oil sands so as to tap parts of such oil sands remote from the existing well bore, an elongated resilient drill guide is employed of a form corresponding to the desired form of the deviating bore, such guide being stressed so that it may be inserted into the existing bore and the stress causing a bit at one end of the guide to press against a side wall of said existing bore, the bit then being rotated relatively to the guide while the bit and guide are advanced. The resilient guide also permits taking of side wall samples from a well bore, while by simultaneously rotating the guide at a speed slower than that of the bit, enlarging of a bore may be effected. In Fig. 2, a normally curved guide comprises one or more lengths of tube 1, each length having a helical slot 2 with its pitch increasing from the ends to the centre and preferably at all points greater than the external diameter of the guide so as to retain uniform curvature when stressed, the guide when stressed being inserted in a bore 6, whereupon, on rotating the bit 3, a curved deviating bore is formed ; the guide may then be replaced by a normally straight guide which is stressed to allow its insertion into the curved deviating bore, and on rotating the bit, a straight extension of said bore, or a straight bore deviating therefrom, is produced. In Figs. 7 and 8, the resilient, helically-slotted guide 12 has within it an imperforate flexible hose 13 with a helical flange 15 extending into the slot in the guide; the bit 19 is rotatably supported on the end of the guide and is driven by an axial flow turbine 22, 23, actuated by drilling fluid supplied through the hose 13. In Fig. 10, resilient guide sections 24, 30 are connected by a coupling 29, and the rotary drill 25 is driven by an inner hose 28, sections of which are connected by couplings 31 ; ball bearings 34, 37 are provided, the balls being inserted through holes 35 afterwards plugged. In Fig. 12, the resilient guide tube 38 is provided with staggered transverse slots 39 spaced further apart towards the centre of the tube ; the hose 40 may be free, or connected to the tube 38 by couplings 41. In Fig. 14, a normally curved guide tube 110 is held straight by a rigid inner member 115 which, after insertion of the tube into a well, may be removed by lowering an overshot 118 into engagement with. a head 123; the rigid member 115 may be replaced by a resilient member curved oppositely to the tube 110 and held during lowering as by a pin and slot. A curved rigid member 115 may be used to initially flex a normally straight guide tube. The member 115 may be hollow for the passage of drilling fluid.
Patent GB-1277572-A (GB)
Title: Improvements in or relating to linkages for connection to motor vehicle door handles
Inventor: LUCKETT JAMES
IPC: E05B65/26
Filed: 1968-04-20
Abstract: 1277572 Vehicle door latches WILMOT BREEDEN Ltd 21 July 1969 [20 April 1968] 18757/68 Heading E2A  An external release linkage for connecting an external door handle of a motor vehicle to a door latch mechanism is so constructed and arranged as to counteract inertia forces acting on the door handle to which the linkage is attached or attachable. As shown, the vertical handle I is housed in a recess 2a of the outer vehicle panelling and is connected by cranked levers 10 pivoted on pins 9 carried by flanges 7, 8 of a plate 4 on which is mounted the door latch mechanism 5. Pivotally connected at the inner ends of the lever 10 are cranked links 14 having slots 15 by which the links slide on pegs 16, outward movement of the handle being limited by 'abutment of the pegs with the corresponding ends of the slots; the linkage is spring-loaded to the resting position. The levers 10 and links 14 slide in parallel horizontal planes and the links are interconnected by a vertical strap 17 having a lug 18 engageable with a peg 19 to displace the peg and thus turn lever 20 to effect latch release. The locking means comprises a pin 22 which engages in a slot 23 in a main release lever 25 mounted on a common pivot 26 with the lever 20. When the pin 22, mounted at the end of a link 27 connected to a sill control locking member, is appropriately positioned with respect to the slots 23, 24, the levers 20, 25 turn as one to release the latch mechanism; in the locking position pin 22 moves freely along the slot 24 and lever 25 does not turn to release the latch mechanism. To counterbalance the inertia of the handle 1 with respect to lateral deceleration forces in the event of a collision, a weight 28 is mounted on the member 17. The mounting plate supports the release mechanism and the latch mechanism 5 and constitutes a pre-assembled unit.
Patent GB-268202-A (GB)
Title: Improvements in or relating to spring mattresses
IPC: A47C23/30
Filed: 1926-07-28
Abstract: 268,202. Lowell, (nÚe Hoffmann), L. M. July 28, 1926. Mattresses.-A mattress has two rectangular frames one above the other separated by elliptical and coil springs. The upper frame carries transverse and longitudinal depending bearers 11, 12 having at their intersections vertical upholstery springs 17 whose upper coils, together with a series of rings 21, are united by springs 19 and wires 22 to form a spring surface bounded by the upper frame. Lugs 23 are provided on the lower frame to position it on the bedstead frame.
Patent GB-583553-A (GB)
Title: Improvements in or relating to electron-discharge tube circuit arrangements
IPC: H03K3/16
Filed: 1944-10-02
Abstract: 583,553. Valve generating circuits. WILLIAMS, F. C. Oct. 2, 1944, No. 18844. [Class 40 (v)] A valve circuit for producing a wave-front at a predetermined instant comprises regenerative means which become effective when a controlling negative wave-form at the grid of the valve becomes equal to a pre-set negative potential applied in the feed-back circuit. Fig. 1 shows a valve V1 which normally passes saturation anode current so that the anode voltage is at the lowest level. A negative sawtooth voltage wave-form is applied to the cathode of diode D1 and an adjustable bias voltage is applied to the anode. After a time interval depending on the setting of bias potentiometer P, the diode begins to conduct and apply the saw-tooth wave-form to the grid of valve V1, so decreasing the cathode current. Regenerative action occurs through pulse transformer PT to cut off the valve abruptly, producing a positive voltage wavefront at the anode and a negative pulse across the inductance in the cathode circuit. When the saw-tooth wave-form rises again to the cut-off level of diode D1, regenerative action occurs in the opposite direction and valves Dl, V1 return to their initial operating states. Alternatively, the primary winding of transformer PT may be connected in the anode or screen grid circuit of a pentode valve and the saw-tooth wave-form may be applied to the suppressor grid.
Patent GB-638814-A (GB)
Title: Improvements in hypodermic injection devices
IPC: A61M5/00
Filed: 1948-07-14
Abstract: 638,814. Hypodermic administering of solids. MASCALL SON & CO., Ltd., G. S. and BOTHWELL, W. A. July 14, 1948, No. 18921. [Class 81(ii)] A device for injecting pellets comprises a spring-pressed plunger for ejecting the pellets through a hypodermic needle, a lateral slot in the needle holder through which pellets may be inserted and a spring-pressed sleeve which normally maintains the aperture closed. In the form described the needle 16 is screwed into the needle holder 13 which in turn is held in a barrel 10. When a pellet is to be inserted the sleeve 17 is pressed back against its spring 18 until an aperture 173 is aligned with a recess 132, through which the pellet can fall into the central bore. Release of the sleeve 17 now retains the pellet inside the device. The plunger 14 is pressed forwards against the spring 15 so that it pushes the pellet out of the needle. When the instrument is not in use the needle is unscrewed from the position shown and screwed into the suitably shaped outer end of the plunger rod 141. Specification 472;560 is referred to.
Patent GB-403898-A (GB)
Title: Process and apparatus for finishing fused silica articles
IPC: C03B29/14
Filed: 1933-07-04
Abstract: 403,898. Fused silica. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST. GOBAIN, CHAUNY, ET CIREY, 1<bis>, Place des Saussaies, Paris. July 4, 1933, No. 18963. Convention date, July 9, 1932. [Class 56.] A process for finishing an article made from fused silica consists in submitting the article to a scraping action while it is still above the transformation temperature of cristobalite, subjecting the scraped surface to a localised heating to effect glazing, and subsequently reheating the article to a temperature of at least 1000‹ C. The process is carried out in a cylindrical chamber 2 lined with refractory material and surmounted by a refractory ring 6 pierced with orifices for the insertion of scrapers 7 and heating- members 8. A second cylindrical chamber 9, similar to the chamber 2, rests on blocks 14 on the ring 6, the space between the blocks permitting the escape of silica vapours. A screwed rod 20 screws through a nut 21 in the bottom of the chamber 2 and is coaxial with the chamber. The scrapers 7, of quartz or carborundum, are carried by a link parallelogram 24 and are pressed inwards by counterweight 25. The heating device 8 consists of three adjustable electrodes between which an arc is struck. In use, a silica article 18, while still hot from the furnace, is gripped between plates 15, 16 by means of a screwed rod 17, and is clamped on a disc 19 secured to the screw 20, the assembly being in the position shown in dotted lines. The screw 20 is turned to lower the article into the chamber 2, and every point on the surface is scraped by the scrapers 7. Immediately a point has been scraped, it is brought into contact with the arc produced by the electrodes 8. When all the surface has been treated, the screw 20 is rotated more rapidly in the reverse direction so that the article is raised into the chamber 9, the scrapers 7 being withdrawn from the chamber 2. The glazed surface is thus reheated by the arc and the whole article is brought to a temperature of 1000‹ C. In the highest position, the top of the rod 17 projects through an opening in the top of the chamber 9 and enables the article, with the enclosing chamber, to be lifted on to a heat-insulated platform where it is allowed to cool. In a modification of the process, thick articles, which cool slowly, are scraped while they are mounted between the centres of a lathe in the open air, and are then enclosed within a chamber 9 for glazing and reheating.
Patent GB-779159-A (GB)
Title: Improvements in or relating to pneumatic tyres
Inventor: SMITH REGINALD SARGENT JAMES
IPC: B60C9/26
Filed: 1954-06-29
Abstract: 779,159. Pneumatic tyres. DUNLOP RUBBER CO., Ltd. May 12, 1955 [June 29, 1954], No. 18986/54. Addition to 731,286. Class 144 (2). A pneumatic tyre has a breaker strip, between the tread and the carcase, which comprises a series of contiguous, overlapping, uniformly circumferentially displaced convolutions 2 of inextensible rubber-coated filamentary material (metal, cotton, silk, flax, rayon, nylon or the like), each convolution including two straight lengths 2a, 2b which meet at, and are oppositely inclined to, the mid-circumferential plane of the tyre. Fig. 1 shows the convolutions each completed by a length 2c which is inclined to the mid-circumferential plane at an angle less than 90 degrees but not less than 55 degrees and which forms a triangle with the lengths 2a, 2b. Alternatively, the convolutions may be of diamond shape, Fig. 4, with sides 4a, 4b, 4c, 4d and of greater circumferential length than transverse width. This arrangement may be combined with an additional layer or strip of a zig-zag winding 5, the lengths 6a, 6b of which are inclined to the mid-circumferential plane at an angle of 84 degrees. Alternatively the diamond arrangement may be modified by a winding which provides two parallel lengths 3c, 3d, Fig. 2, in each convolution, which are normal to the mid-circumferential plane and form a transverse diagonal of the diamond. In all cases, the apex angles at the mid plane are generally in the range of 20 to 30 degrees. The complete strip may comprise a single winding to leave two free ends only, or may comprise two or more shorter windings overlapped at their ends. Two strips may be superposed to provide two layers with corresponding parts of the convolutions in the respective layers crossing each other. Where metal wires are used, the wire is embedded in a soft rubber compound for cushioning purposes.
Patent GB-129198-A (GB)
Title: Improvements in or relating to Electrical Transformers.
IPC: H01F38/08
Filed: 1918-11-20
Abstract: 129,198. Siemens Bros. Dynamo Works, Howard, J. W., and Morphew, L. D. Nov 20, 1918. Transformers.- In a high - reactance transformer of the kind in which magnetic shunts in the form of laminated strips d are placed between the primary and secondary windings, the strips are provided with transverse slits or cuts e which may extend alternately from opposite edges of the strips.
Patent GB-630103-A (GB)
Title: Preparation of compounds of the cyclopentanodimethylpolyhydrophenanthrene series
IPC: C07J75/00
Filed: 1947-07-16
Abstract: A mixture of D 17,20-and D 20,21-3-acyloxy-11-ketopregnenes and a 3-acyloxy-11-keto-20-hydroxypregnane is manufactured by treating a 3-acyloxy-11-keto-20-aminopregnane with nitrous acid or nitrous oxides which in aqueous solution yield nitrous acid.  The reaction may be carried out in a solvent medium such as alcohol, water, or acetic acid, or preferably in pyridine, which favours the formation of the unsaturated products in preference to the hydroxy compound. The mixture obtained may be treated with an aromatic sulphonyl halide (e.g. p-toluenesulphonyl chloride) and refluxed with a base (e.g. hydrazine, an alkali or alkaline-earth metal hydroxide or alkoxide, or preferably a tertiary amine, e.g. pyridine or collidine) to yield a mixture of the two unsaturated compounds only, which is then treated with ozone (preferably in a solvent such as an aliphatic alcohol of 6 carbon atoms or less or a simple correspondingly low-molecular-weight ester, or mixtures thereof, e.g. a mixture of methanol and ethyl acetate) and the ozonides are decomposed with a mild reducing agent (preferably zinc dust and acetic acid) to form a mixture of 3-acyloxy-11-keto-17-formyletiocholane and 3-acyloxy-11 : 17-diketoetiocholane.  This is treated with an oxidizing agent (e.g. a permanganate or chromic acid) to oxidize the 17-formyl compound to 3-acyloxy-11-ketoetiochlanic acid, which is removed by means of alkali (e.g. dilute potassium carbonate solution). The residual 3-acyloxy-11 : 17-diketoetiocholane is saponified with alkali (e.g. by refluxing with a lower aliphatic alcohol solution of an alkali metal hydroxide) to give the free 3-hydroxy compound, which may be oxidized (preferably with chromium trioxide in dilute acetic acid) to 3 : 11 : 17-triketoetiocholane.  The 3-acyloxy-11-ketoetiocholanic acid may be used for producing dehydrocorticosterone, or may be connected to 3-acyloxy-11 : 17-diketoetiocholane by treatment with a thionyl halide, treatment of the resulting acid halide with an azide, decomposition of the acid azide, preferably by heating with dilute acid, treating the resulting 3-acyloxy - 11 - keto - 17 - aminoetiocholane with a hypohalous acid followed by heating with an organic base (e.g. pyridine or collidine) and hydrolysing the product with dilute acid.  An example describes the various steps of the process, starting with 3(a )-acetoxy-11-keto-20-aminopregnane. Alternative starting materials are the corresponding compound having the 3-acetoxy group in the cis-form, and compounds in which the 3-acetoxy group is replaced by a group derived from propionic, butyric, valeric, caproic, capric, benzoic or toluic acid. Specification 626,523 is referred to.
Patent GB-147088-A (GB)
Title: Improved voltage-regulator
IPC: H02J7/22
Filed: 1920-07-07
Abstract: 147,088. M³nz, F. April 4, 1919, [Convention date]. Regulation, automatic apparatus for. -Voltage regulators are constructed to work smoothly under conditions of mechanical vibration, as used in connexion with dynamos chargi n g batteries in motor-vehicles. The regulator, shown in connexion with a dynamo D in the field N of which it is employed to insert a resistance W, comprises an iron shell 1 containing a voltage coil 2 and a hollow iron core 5 attached to a flexible diaphragm 6. An internal spring 13 normally holds up the core so that contacts 9, 10 keep the resistance short-circuited, the contacts being separated by a downward movement in case of excessive voltage, The movement is damped by the action between the hollow core and a closely-fitting stationary cylinder 14, the position of which and the pressure of the spring 13 are adjustable by a screw 7. A non-magnetic plate 8 fills up the lower end of the core and an extension of the non-magnetic material under the iron prevents sticking in the lower position.
Patent GB-458930-A (GB)
Title: Improvements in or relating to bridles
IPC: B68B1/04
Filed: 1935-07-04
Abstract: 458,930. Bridles. SMITH, L. W., Park Farm, Knockholt, Kent. July 4, 1935, No. 19135. [Class 62] A bitless bridle comprises a U-shaped metal nose-piece 10 formed with or attached to lugs 12 having means at 13 for attaching headstraps. Pivoted to the lugs are cheek pieces 15 supporting a curb-chain 20, 21, and connected together by a rigid bar 16. The cheeks are also furnished with rings 17 for the attachment of a curb rein. The upper rein is attached at 26 to members 25 also pivoted to the lugs 12. The hooks 19 for the curb are mounted in holes having an enlarged portion 27 to enable the hooks to tilt if necessary. The curb may be a continuous chain with a leather covered central section or may have a separate central portion 21 made of a core of thread material covered with leather. Preferably the curb chain has a loop 22 through which is passed a strap 23 fastened to the cheek pieces.
Patent GB-446461-A (GB)
Title: Improvements connected with change speed gearing
IPC: F16H9/12
Filed: 1935-07-04
Abstract: 446,461. Expanding-pulley gearing. GROSSENHAINER WEBSTUHL - UND MASCHINEN - FABRIK AKT. - GES., Grossenhain, Saxony, Germany. July 4, 1935, No. 19144. Convention date, July 6, 1934. [Class 80 (ii)] [See also Group XXXV] In oxpanding-pul ley gearing, wherein an electric motor 38 is swung about a pivotal mounting 39, to tension a V-belt 64, passing round ar expanding-pulley on the motor-shaft 47 and a non-adjustable fixed driven pulley, the adjusting means is associated with a scale 67 which indicates the speed of the driven member. In Figs. 5 and 6, the motor is pivotally adjusted by a thumbscrew 45 and effects the adjustment of the expanding-pulley by means of lazy-tongs 56, 60, pivoted on the motor at 58 and anchored to a fixed pivot 62, the lazy-tongs serving directly to slide the pulley-flanges 48 along the motor shaft. The thumbscrew 45 screws along a fixed stud 46 and is embraced by a lug 41 on the motor, which lug carries the scale 67. Constructions of expanding-pulley for independent adjustment are shown in Figs. 3 and 4. In the former, one pulleyflange 7 screws along the threaded boss of the other flange 6 and is locked in the adjusted position by a spring-peg 12, which serves as an indicating-pointer for a scale on the pulley flange. In Fig. 4, both pulley-flanges screw along a common boss 31, with threads of opposite hands, being locked in an adjusted position by bolts 37. The boss 31 carries a scale co-operating with a marking on one of the pulley-flanges. In the independentlyadjustable form, the motor is pivotally adjusted by thumbscrews arranged above and below a lug thereon.
Patent GB-223662-A (GB)
Title: Improvements relating to dough moulding machines
IPC: A21C9/08
Filed: 1923-07-26
Abstract: 223,662. Porter, J. July 26, 1923. Dough-working machines.-In machines for folding dough in two directions perpendicular to each other, the dough is folded by a deflector or deflectors, each of which is mounted upon a slide reciprocably mounted in a guide, an inward and upward movement being imparted to the deflector relatively to the dough, so that the deflector can take the side of the dough and lift it inwardly over the main portion. The side folder, Fig. 2, which operates in conjunction with a conveyer C, comprising two endless belts 1, 2, and which is adapted to fold inwardly the sides 3. 4 of a dough sheet 5, consists of deflectors 16, 17 carried by slides 14, 35 arranged to slide in guiding slots 12, 13 formed in a yoke 11 which bridges said conveyer C. The slots 12, 13 are inclined to the horizontal, while the slides 14, 15 are reciprocated therein bv means such as levers 21, 22, 22<a>, 26 from a block 27, adapted to slide in a guideway 28 and provided with a pin 29 located in a cam groove 80 of a cam 31 driven the correct time relation with the other parts of the machine. The dough sheets are normally supported between the belts 1, 2 by two sets of rollers 41, 42 carried by frames adapted to be moved under the upper part of the belts 1, 2 after the folding operation has been completed, so as to allow the folded dough to fall on to a second conveyer B and pass to the longitudinal folder G. The longitudinal :older G, Fig. 3, comprises a deflector 48, which is mounted on a pin 44, slidable in a carrier 43<a>, having at its upper end a stop 45 and surround. ing the lower end a spring 47 arranged so that the deflector 48 is normally held in lowermost position. The carrier 43<a> reciprocates in an inclined guide 42<a> formed in a crosshead 41, which also reciprocates between guides 42, 43 carried by the frame of the machine at an angle to the horizontal, the respective motions of the carrier 43<a> and crosshead 41 being obtained by links 49, 52 connected to the driving mechanism of the machine. The dough sheet and deflector 48 are initially in the positions shown in dotted lines. The conveyer 8 is stopped and the crosshead 41 then commences to rise, while at the same time the carrier 43a begins to move to the right, so that the defector catches the leading edge of the dough and moves it upwardly and backwardly. The conveyer B then recommences its movement and throws the dough on to the conveyer at 54. The machine also includes the usual press rolls &c.
Patent GB-1130403-A (GB)
Title: Improvements in and relating to comparison photometers
IPC: G01J1/12
Filed: 1966-05-02
Abstract: 1,130,403. Comparison photo-meters. INTERNATIONAL POLAROID CORP. May 2,1966 [May 26,1965], No.19244/66. Addition to 1, 100, 260. Heading G1P. [Also in Division G2] The comparison photo-meter target of Specification 1, 100, 260 is modified in that the background pattern formed by the two light source areas defines a secondary index symbol which registers with the superimposed primary index symbol.