baber/WOPTO huggingface dataset:
Patent GB-635912-A (GB)
Title: A new or improved process for the partial depolymerisation of polymerised methyl methacrylate
IPC: C08F8/50
Filed: 1947-05-17
Abstract: Polymethyl methacrylate, particularly in scrap form, is partially depolymerized by mechanically working in a closed screw stuffer at elevated temperatures, the pasty mass obtained being forced through a perforated plate and cut into small pieces within a chamber through which an air draught passes to remove volatile material.  Dyes, fillers and pigments may be incorporated during the process.  Small pieces of polymethyl methacrylate are fed into the hopper 1 and fed forward on the worm 2.  The temperature is regulated by coils 4 and rises from room temperature to 200 DEG  C. at the end <PICT:0635912/IV (a)/1> where the pasty mass passes through holes 6 in die-plate 5.  The rotating blades 7 cut the extruded threads into small pieces and air draught through casing 9 removes volatile material in the direction 10.
Patent GB-133713-A (GB)
IPC: C08G8/00
Abstract: 133,713. Melamid, M. Feb. 4, 1918, [Convention date]. Sulphonic esters.-Resinous compounds are prepared by the reaction of aromatic sulphochlorides upon soft pitch, anthracene oil, or the alkali-soluble portion of either of these bodies, in presence of alkali. The products are soluble in organic solvents and may be used in the manufacture of varnishes.
Patent GB-783262-A (GB)
Title: Improvements in or relating to electrical resistance heating apparatus
Inventor: IRENS ALFRED NORMAN
IPC: H05B1/02
Filed: 1954-02-25
Abstract: 783,262. Current supply for resistance heaters. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. May 24, 1955 [Feb. 25, 1954], No. 13398/57. Divided out of 783,261. Class 39(3) [Also in Group XXXV] In electrically heated apparatus having a heat capacity in such relation to the heating power that the normal operating temperature is attained only after a considerable interval after switching on, e.g. a hotplate, contacts 7, 8 of a thermal time delay means 6 are connected with the heater sections 2, 3 so that when the relay is cold the supply terminals L, N are connected for rapid heating of the apparatus by removal of one heater section from the circuit and by the connection of another heating section and when the relay is hot the sections 2, 3 are connected in series for normal operation, the relay means having a heater 10 which is connected with the terminals L, N in circuit with the contact of a main switch 4 or regulator for the apparatus so that the heater 10 is energized at all times when the apparatus is switched on and to change the heater sections from the first connections to the second connections (in series) after a time delay, and thereafter to maintain the second connections until the main switch or regulator is turned off. The thermal time delay means comprises a bimetallic strip 9 carrying a contact 7 and a heater 10 and is so designed or has thermal insulation so arranged that the time for the delay means to cool down to the temperature at which the second connections are made (for normal operation) corresponds to the time taken for the heating apparatus to cool down to the temperature at which the second connections can be made. The contacts 7, 8 of the delay means are arranged so that when the delay means is cold, one section 2 of the heater is shortcircuited and another section 3 is connected across the terminals L, N. A variable heat switch or energy regulator 20 may be connected in circuit with the heating apparatus and has contacts 21, 22 which are open in the "off" position of the regulator but when closed connect the heater 10 of the delay means to the supply conductors L, N. The energy regulator may be a "Simmerstat" (Registered Trade Mark) made according to Specification 517,538 or 587,947 [both in Group XXXVII] The auxiliary contacts 21, 22 may be employed with a variable heat switch controlling the connectors of a plurality of hot-plate heater sections.
Patent GB-305010-A (GB)
Title: Improvements in furnace walls
IPC: F23M5/08
Filed: 1928-05-07
Abstract: 305,010. American Engineering Co., (Assignees of Wheeler, E.). Jan. 28, 1928, [Convention date]. Addition to 297,094. Walls.-An improved furnace wall of the kind described in the parent Specification comprises a metal framework, constituting a portion of the furnace wall and arranged behind the protective lining, adapted to form a chamber by which access to the protective lining may be readily obtained for the purpose of renewing the metal blocks thereof. As shown in Figs. 1 and 4, the protective lining comprises vertical and inclined rows of blocks 27 of cast iron or other refractory aterial secured to rows of tubes 22 forming part of the water circulation system of a boiler by bolts 41, 42, and angle members 44. The upper and lower inclined rows of blocks are provided with surfaces adapted to engage with the horizontal courses of brickwork in the wall above and below. The framework behind the lining comprises upper and lower inclined channel beams 47, 48 connected to vertical supporting beams at their ends and by intermediate vertical I-beams 46. Cast iron blocks 67, 85 wedge shape in section are secured bv bolts to the channel beams 47, 48, as shown in Fig. 6, and these blocks engage with the brickwork above and below. In order to permit the protective lining to expand relatively to the frame behind, connection between the angle members 44 and channel beams 47, 48 is made, as shown in Fig. 5, by means of pins 93, 94 loosely engaging with apertures in the vertical angle members 44 and in brackets 103, 104, 109, 111 on the beams 47, 48. The connection between the protective lining and frame at the centre of their length is preferably made rigid so that the lining may expand from the centre towards the ends. The frame is enclosed on the outside by panels 125 removably secured to vertical angle members bolted to the channel beams.
Patent GB-1179109-A (GB)
Title: New 5-Chloro-10-Dioxo-11-Alkyl-Dibenzo (c,f) Thiazepine (1,2) Derivatives and process for preparing them
Inventor: MALEN CHARLES
IPC: C07D281/02
Filed: 1966-12-19
Abstract: 1,179,109. Dibenzothiazepine derivatives. SCIENCE UNION ET CIE, SOC. FRANCAISE DE RECHERCHE MEDICALE. 15 Dec., 1967 [19 Dec., 1966], No. 13482/69. Divided out of 1,179,108. Heading C2C. Novel compounds (I) in which A and B each represents independently H, halo, C 1-5  alkyl or C 1-5  alkoxy and R is C 1-5  alkyl, are prepared by reacting the corresponding 5-OH compound with hydrogen chloride. Intermediates isolated are compounds of Formula I V prepared by reacting an appropriate o-carbomethoxy-benzene sulphochloride with an appropriate N-monoalkyl-aniline; the acids corresponding to the esters IV, prepared by hydrolysis of the esters IV; the acid chlorides corresponding to esters IV, prepared by reaction of the acid with a chlorinating agent; compounds of Formula V, prepared by cyclizing the acid chloride; and the 5-hydroxy derivatives prepared by reduction of the compounds V.
Patent GB-135114-A (GB)
IPC: F16G5/18
Abstract: 135,114. Anderson, W. E. E. April 11, 1919. Belts.-In Specification 13412/04 is described a belt having leather links such as a, Fig. 1, joined together in pairs by screws d and connected end to end by metal links b, which have pins c projecting outwardly into holes in the leather links. The leather parts are reinforced. by metal plates e, Figs. 2 and 3, stamped with holes g and bosses h for the passage and support of the pins c of the links b. Holes i are also provided for the screws or rivets d.
Patent GB-573508-A (GB)
Title: Improvements in electrical circuits for the generation of pulses or oscillations
IPC: H03K3/08
Filed: 1943-08-19
Abstract: 573,508. Valve generating circuits. IVALL, T. E. Aug. 19, 1943, No. 13559. [Class 40 (v)] A generator of pulses or oscillations comprises a valve having three electrodes in cascade between the cathode and the anode, the first and second electrodes counting from the cathode being connected to operate as a cathodefollower system, the second electrode acting as an intermediate anode, while the third electrode serves as a control electrode and is fed with the output of the cathode follower system. Positive feed-back is applied from the anode to the cathode follower system so that the circuit gives infinite gain for a short period. Fig. 1 shows a pulse generator with anode and cathode load resistances R4, R5 and potential divider R6, R7 providing positive feed-back to the grid G1, the grid G2 acting as an anode is earthed through the condenser C3 so that the cathode fluctuations are effectively applied to the suppressor grid G3 to which the input is applied. The pulse width is adjusted by the potentiometer R2 which controls the bias of the suppressor grid G3. Fig. 3 shows an oscillator with tuned circuit L, C in the anode circuit and the resistance R5 in the cathode lead. A potential divider R6, R7 is provided to furnish the positive feed-back. The resistance R6 is preferably adjustable to enable maximum power to be obtained. The arrangement may also be used with a multi-vibrator, Fig. 4 (not shown), with the first electrode connected to a tapping on the potential divider across the output and with condenser coupling being provided between the second and third electrodes. In this arrangement the potential of the third electrode determines the pulse width and the frequency depends on the capacity of the coupling condenser and the resistance in the connection to the third electrode. The resistance in the cathode lead provides additional back coupling which is cumulative with that furnished by the condenser. Synchronizing pulses may be applied to the third electrode and be applied to a tapping on, or to a resistance in series with, the resistance in that lead.
Patent GB-611584-A (GB)
Title: Improvements in and relating to riveting tools
IPC: B21J15/12
Filed: 1946-05-04
Abstract: 611,584. Riveting. ANDERSON, N. R. May 4, 1946, No. 13586. [Class 83 (iv)] A riveting- tool comprises a mandrel adapted to be rotated, the free end of the mandrel containing a race with rolling members retained therein and located at the operative extremity of the tool. Balls 5, preferably three in number, are held in place by a sleeve 6 secured in position by an expanding ring 7. A hole 12 accommodates surplus metal 13, Fig. 4, formed when the rivet 9 is shaped as shown at 11. In a modification the ball-race 4 is a separate renewable part, the sleeve 6 is pinned to the mandrel 1 and the balls 5 may project below the level of the lip 14, in which case the surplus metal takes the form shown at 11a. In another form, the balls are replaced by rollers.
Patent GB-124372-A (GB)
Title: Improvements in or relating to Railway Engine Turntables.
Inventor: ESSENHIGH JOSEPH ROWLAND
IPC: B61J1/04
Filed: 1918-08-22
Abstract: 124,372. Essenhigh, J. R. Aug. 22, 1918. Turntables, mechanical.-Railway engine turntables have locking bolts with wedge ends A, Fig. 1, extended to twice their usual length, the outer part serving to lock the turntable and the inner part to chock it. Recesses E are provided in the masonry to receive the wedge A which engage shoes C and slide in brackets D, the cranks G being twice their usual length. The hand-lever J has three operating positions, " out," " locking " and " chocking," and is secured in the last two positions, J<2>, J<3>, Fig. 4, by catches Y, Y<1> having forked ends Z engaged by arms Q, Q<1> on a square rod P. This red is supported by brackets 0 and is rotated by a weighted lever R operated by a pedal U, the pedal and weight S being adjustable.
Patent GB-1349809-A (GB)
Title: Low temperature liquefied gas tanker ships equipped with membranous vessels and method of construction
IPC: B63B25/16
Filed: 1972-03-23
Abstract: 1349809 Carrying liquefied gases BRIDGESTONE LIQUEFIED GAS CO Ltd 23 March 1972 [27 April 1971] 13692/72 Heading B7A [Also in Division F4] A tanker ship has a liquefied gas tank assembly 6 of a membrane type which includes an outer box 9 made of steel plate forming bottom 13 and side 14 wall portions and a rigid roof structure 15. A compression resistant heat insulating layer 12 is on the inside of the box and membranous vessel 7 is on the inside of the insulating layer. The steel plate is thick enough to keep the shape of the tank assembly when it is to be suspended by the rigid roof structure but not enough to resist an internal pressure exerted by loaded liquefied gases. The tank assembly is mounted in hold space 5 formed in the hull 1 of the ship in a manner such that the bottom and side wall portions of the box are directly supported by inner walls of the hull and such that the rigid roof structure forms a roof portion of the hull. In the embodiment shown the roof portion of the hull is a deck.
Patent GB-1506844-A (GB)
Title: Hydraulic fluid compositions
IPC: C07F7/18
Filed: 1974-03-27
Abstract: 1506844 Hydraulic fluids CASTROL Ltd 25 March 1975 [27 March 1974] 13708/74 Heading C5F [Also in Division C3] Novel silanes, disiloxy compounds, disiloxanes and trisiloxanes, bearing aromatic groups and glycol residues and useful as hydraulic fluids, have the formulae wherein each Ar is an aryl radical, each R is an aryl or alkyl radical, each R' is an aryl, alkyl or alkoxy radical or a group R<SP>2</SP> is H, Me or Et at least one on adjacent C atoms being H, R<SP>3</SP> is an alkyl radical, R<SP>4</SP> is the residue obtained by removing 2 OH groups from a diol or polyol, and n is an integer, there being at least one group -OR<SP>4</SP>O- or in the molecule. Preferred compounds have one Me, one Ph and 2 diol residues on each Si atom. They may be prepared by reaction of the aryl halosilanes with the alcohols, with pyridine or an N 2  purge to remove HCI, or by transesterification. The compounds may be used as a hydraulic base stock, as a component of a blend of base stocks, or as an additive to a base stock. Suitable non-siliconcontaining fluids are glycol and polyglycol ethers, esters, orthoesters and borates. Conventional additives may be present.
Patent GB-1055764-A (GB)
Title: Improvements in methods and means for rolling metal powder
IPC: B22F3/18
Filed: 1964-04-03
Abstract: 1,055,764. Rolling metal powder. SCHLOEMANN A.G. April 3, 1964 [May 3, 1963], No. 13811/64. Heading B5A. In a method of rolling metal into sheets or strips, metal particles are accelerated towards the bite of a pair of rolls so that they enter the gripping range with a speed which corresponds approximately to the peripheral speed of the rolls. As shown, the metal powder or granules 4 are delivered to a centrifugal device 6 via a hopper 3 and conveyer 2 and are thrown from the device 6 into the bite of rolls 1. In a second embodiment, Fig. 1 (not shown), the axes of the rolls 1 are in a horizontal plane and the metal powder is allowed to fall under gravity from a conveyer 2.
Patent GB-681485-A (GB)
Title: Improvements in or relating to tubular metal scaffolding
Inventor: HAWES ALBERT HENRY
IPC: E04G5/14
Filed: 1950-06-05
Abstract: 681,485. Scaffolding. KWIKFORM, Ltd. June 1, 1951 [June 5, 1950], No. 13941/50. Addition to 652,301. Class 20(ii) [Also in Groups I and XXV] The upright for supporting a guard rail for a scaffolding structure described in the parent Specification is modified in that the clip 14 securing the toe board 11 in position is covered by a collar slidable on the upright 12 so that the clip can be adjusted for toe boards of different height. The arm 21 of the clamp 20 is also formed with a concave recess extending above the longitudinal axis of the guard rail 13 so as to more firmly secure the latter in its clamped position. The axis of the clamping screw 23 may also be disposed above the longitudinal axis of the rail 13.
Patent GB-1486517-A (GB)
Title: Phase detector
IPC: H04N9/45
Filed: 1975-04-04
Abstract: 1486517 Phase detectors SONY CORP 4 April 1975 [25 April 1974] 13957/75 Heading H3A A phase detector comprises a limiting amplifier including an input stage 1, 2 for receiving a first signal S B , e.g. a colour burst signal and an output stage 3, 4 for supplying an operational current related in phase to signal S B  to the common terminal of a differential amplifier 5, 6 having its input terminals connected for receiving a second signal S R  differentially applied thereto whereby the output provided by 5, 6 represents the phase difference between S B  and S R . The amplifier 5, 6 is keyed on or off by the transistor 3 and the output at the collector of 5 has a pulse width corresponding to the period for which transistors 3, 5 are conductive together. The output is integrated at 12, 13 and applied via a sampling gate 15 operative over a predetermined period and via a threshold circuit 21 to an output 25. In the alternative embodiment of Fig. 4 (not shown) the sampling gate is connected to on off key the differential amplifier 3, 4. The differential amplifiers I-4, provide a limiting action on the input signal S B  amplitude variations.
Patent GB-177092-A (GB)
Title: Improvements in sliver cans and other receptacles
IPC: B65H75/16
Filed: 1921-05-19
Abstract: 177,092. Oldham Flax Fibre Co., Ltd., and Noton, S. May 19, 1921. Rims of openings.-To stiffen the edge of a sliver can or other receptacle made of metal or fibre, a seamless metal ring B is applied to the edge. The ring is crookshaped in section, the longer leg b being the outer flange. The inner leg b<1> is curled inwardly to form a rounded top and is pressed against the wall of the can.
Patent GB-860966-A (GB)
Title: Clutch disc spring, in particular for motor vehicles
IPC: F16D13/58
Filed: 1959-04-24
Abstract: 860,966. Friction clutches. HAUSSERMANN, K., and HAUSSERMANN, H., [trading as LAMELLENUND KUPPLUNGSBAN AUGUST HAUSSERMANN.]. April 24, 1959 [April 24, 1958], No. 14016/59. Class 80 (2). [Also in Group XXXII] A clutch diaphragm spring 1 has the ends 3 of inwardly extending radial tongues 2 hardened to a greater degree than the rest of the spring.
Patent GB-255199-A (GB)
Title: Improvements in tin openers
IPC: B67B7/46
Filed: 1925-05-28
Abstract: 255,199. Holloway, T. O. May 28, 1925. Opening by cutting.-A tin opener comprises a blade i formed with a tang held within and riveted to a sheath h formed by bending on itself a metal blank and comprising a nose portion b and a blade-embracing portion extending over the tang of the blade into the handle. When the blade is provided with a spike p a corresponding slot is formed in the upper part of the sheath.
Patent GB-969453-A (GB)
Title: Manufacture of squeeze tube containers
IPC: B29C49/02
Filed: 1963-04-09
Abstract: 969,453. Blow-moulding hollow articles. TUBED CHEMICALS CORPORATION. April 9, 1963 [April 26, 1962], No. 14086/63. Heading B5A. In a method of making hollow articles, e.g. dispenser tubes, a tube 8 is extruded through a die 2 to a length slightly longer than the two die halves 10, 12, each of which has a cavity 14 for the main body of the tube and a die insert at each end consisting e.g. of an inner shoulder 16, a thread die 18 and a tip die 20, the mould is closed and air is introduced under pressure via tube 6 to blow the walls into intimate contact with the mould surfaces, air passing out of the die exit at the lower end. At the inlet end an air chamber block 22 may be provided to prevent Venturi effects. Alternatively the fluid pressure may be admitted at the centre of the tube cavity and allowed to pass to the atmosphere from both ends of the die cavity. The double tip ended article is then cut in half and finished in the normal manner.
Patent GB-255596-A (GB)
Title: Improvements in the production of concrete blocks, slabs or monoliths for building and other purposes
IPC: B28B23/00
Filed: 1925-05-29
Abstract: 255,596. Concrete, Ltd., and Mathews, C. B. May 29, 1925. Compound blocks; metalskeleton blocks.-A plain or corrugated sheet-metal core b, which is entirely surrounded by concrete to form the composite block shown in Fig. 5, is bent as shown in Fig. 7 to form an upper surface, two side walls and sufficient of a base to enable it to stand firm thereon. A bottom layer d of concrete is placed in the mould, the core laid upon it, and the mould then filled up with concrete. Flaps formed on the top or side walls of the core may be bent over to cover the end holes, or blocks of wood may be used to prevent access of concrete to the interior of the core. To form long blocks the metal cores may be connected end-to-end by lapping and riveting, by seaming, or by using wooden connecting strips.
Patent GB-1442737-A (GB)
Title: Pumps
IPC: F04B1/00
Filed: 1974-03-29
Abstract: 1442737 Reciprocating pumps BRITISH PETROLEUM CO Ltd 27 Feb 1975 [29 March 1974] 14172/74 Heading F1A A pump for submerged use or remote locations comprises an annular pumping chamber defined by inner and outer cylinder walls 71, 70 each supporting a twisted linear motor stator 50, 51, the piston 52 being reciprocated and rotated and guided by interengagement of rollers 66 with tracks 64, 65, or helical grooves with ribs; the pump may be single or double-acting. The piston stroke may be adjusted by timing devices controlling the supply switchgear.
Patent GB-148674-A (GB)
Title: Improvements in and relating to valves
IPC: F16K15/20
Filed: 1919-06-05
Abstract: 148,674. Low, T. A. June 5, 1919. Tyre inflating-valves.-A flanged nut 15 screwed on to a tube 1 has a shoulder 17 engaging a tubular member 6 enclosing a resilient seating 4 for the valve member 10. The flange 7 of the member 6 and the upper end of the tube 1 are shaped to prevent relative rotary movement. An adjustable spring 12 normally maintains the valve on its seating, and a cap 8 screws on to the end of the valve spindle. The valve device is also shown applied to a tyre valve of the Schrader type, in which case the member 7 is not of angular cross-section.
Patent GB-291351-A (GB)
Title: Improvements in or relating to delivery devices for printing machines
IPC: B65H31/24
Filed: 1928-05-16
Abstract: 291,351. Maschinenfabrik Augsburg- N³rnberg Akt.-Ges. May 30, 1927, [Convention date]. Delivery apparatus.-The delivery apparatus of a printing-machine is arranged for alternative delivery of sheets during the running of the machine to either end of the machine with the printed face of the sheet uppermost in each case. In the arrangement shown, sheets from a rotary printing-couple a, b are delivered by a drum d to drop-sheet delivery tapes e, and can be advanced on the tapes e in two stages to a pile g, or can be delivered in the second stage from the tapes e in the reverse direction to a second set tapes f delivering to a pile h. The tapes e, f pass respectively over alternate fast and loose pulleys on a shaft i, which can be prevented from rotation in clockwise direction by means of a detent controlled by a hand-lever o, when the tapes e are required to deliver to the pile g, or can be set free when the tapes f are operative; the rollers l, m of the tapes e are set to rotate or to be fixed during their travelling movement according to the direction of delivery.