baber/WOPTO huggingface dataset:
Patent GB-1215500-A (GB)
Title: Epsilon-caprolactam
IPC: C07D201/08
Filed: 1968-06-14
Abstract: 1,215,500. #-Caprolactam. UNION CARBIDE CORP. 14 June, 1968 [16 June, 1967], No. 28315/68. Heading C2C. #-Caprolactam is produced by reaction with ammonia in the presence of water at superatmospheric pressure and elevated temperature of #-caprolactone or a derivative thereof capable of being converted to #-caprolactam by the aforesaid reaction (e.g. #-hydroxycaproic acid, #-aminocaproic acid, #-acetoxycaproic acid, #- hydroxycaproamide, poly-(#-caprolactone), and #-caprolactone adducts of #-hydroxycaproic acid), and at least a part of the carbon dioxide generated is removed from the process system so as to reduce the concentration of carbon dioxide in the reaction zone and thereby obtain an improved yield of #-caprolactam. The invention is described as applied to a two-stage process as disclosed in Specification 1,102,999 (Union Carbide Corporation), and this is improved according to the present invention by the addition of a carbon dioxide removing apparatus. The overhead stream from the flash evaporator 18 (not shown) is divided and a portion is directed to the carbon dioxide removal system, comprising tanks 28 and 30 (not shown). In tank 28, an epsilon caprolactone feed stream is thoroughly admixed with the incoming portion of the overhead stream from the flash evaporator to effect reaction between the ammonia and the epsilon-caprolactone and then the effluent from tank 28 is charged directly to tank 30 wherein carbon dioxide is released from solution and vented to the atmosphere. The effluent from tank 30 joins other recycle streams and enters the mixing tank 10 (not shown). The epsilon-caprolactam is purified in a distillation column 26 (not shown).
Patent GB-1044988-A (GB)
Title: Improvements in shears for trimming the edges of rolled metal sheets or plates
IPC: B23D31/02
Filed: 1964-07-09
Abstract: 1,044,988. Shearing. SCHLOEMANN A.G. July 9, 1964 [Aug. 21, 1963], No. 28316/64. Heading B3W. An edge-trimming shear has a reciprocating blade inclined in the cutting direction and transverse blades at the entry side for severing the trimming and is characterized in that a complete working cycle comprises two working strokes, the first stroke effecting the trimming cut and the second stroke effecting the severing cut on the trimming, and in that the position in which the severing cut is made is displaced towards the exit side of the shears so that a short length of the trimming, or at least a slit produced by the trimming cut, remains on the sheet. The shear comprises a frame 1 having guide surfaces 2 and 3, a movable blade holder 4 driven by eccentrics 5 and 6, a movable trimming blade 11, a transverse blade 13, and a gauging stop 17 mounted on the holder 4. The distance between guides 2 and 3 is greater than the width of the holder 4 which is moved from side to side by a fluid cylinder 9, in moving to the right from the position shown in Fig. 1, the links 7 and 8 rotate about the eccentrics 5 and 6 so that the working stroke is displaced bodily downwards. The frame also supports a stationary longitudinal blade 15 and a transverse blade 16, which is displaced from the entry end of the lower blade towards the exit side of the shear and is also located, by an amount equal to the maximum thickness of plate to be cut, below the lowest point of descent of the movable blade during the trimming cut. Operation.-A plate to be trimmed is fed into the shear up to the stop 17, and is clamped by hold-downs 18. With the blade holder 4 in contact with the guide 2, the blade 11 descends to make the trimming cut. The inclination of the blade and the length of stroke are such that the entry end of the upper blade remains spaced away from the lower blade by an amount equal to the thickness of the plate. During the return stroke the holder 4 is moved to the right to engage the guide 3 and to bring the blade 13 into a position to co-operate with the blade 16, so that at the next stroke of the shear the trimming is cut transversely and falls down a shoot 19 on to a conveyer 20. The position of the trimming blade 11 can be adjusted by wedges 21, 22 behind the guide 2. Electrical switches 24 and 25 prevent operation of the shear unless the blade-holder 4 is in contact with one of the guides 2 or 3.
Patent GB-801099-A (GB)
Title: Improvements connected with driving mirrors for motor vehicles
IPC: B60R1/076
Filed: 1955-10-05
Abstract: 801,099. Hinges. CANTOR, R. Oct. 2, 1956 [Oct. 5, 1955], No. 28326/55. Class 65(2) [Also in Group XXXII] Relates to a hinge for a driving mirror on a motor vehicle (see Group XXXII). As shown, a mirror support pillar 5 has a three or more sided head 5b accommodated within the star - shaped bore of a rubber or like resilient sleeve 6, the sleeve being compressed to grip the head within a two-part housing 7a, 8 securable to the vehicle. The head 5b is frustopyramidal having four inclined flat faces 5c and a flat base and is joined to the pillar by a neck 5a. The cover part 8 of the housing screws into the flange 7a of the head of a bolt 7. Ribs 8a in the part 8 bite into the sleeve.
Patent GB-1470698-A (GB)
Title: Method and apparatus for treating foundry sand
IPC: B22C5/04
Filed: 1974-06-26
Abstract: 1470698 Reducing foundry sand; vibratory screens GEORGIA IRON WORKS CO 26 June 1974 [26 July 1973] 28358/74 Headings B2A and B2H Foundry sand lumps are reduced and binders at least partially removed by first vibrating the lumps 82 on a screen comprised of saw tooth bars 84 Fig. 4, agitating the reduced material in a fluidised condition above a slotted screen 98, passing the cleaned reduced material leaving the slotted screen through a stretched fine screen 106 typically 10-20 mesh and preferably 12 mesh and discharging the product at 126 Fig. 3, and removing via an outlet 118, tramp material. Vibratory motion with at least a vertical component is produced by an eccentric shaft 36 running at up to 5000 r.p.m. The screen 106 is tensioned by spring-biassed rods 114, Fig. 4. A discharge pan 120 may also be a 100-300 mesh screen. Air is drawn, by means not shown, through openings 128, 130 Fig. 4 to remove very light binder particles. The whole mechanism is suspended on springs 70 mounted in housing covers 78.
Patent GB-144554-A (GB)
Title: Improvements relating to removably attached pads for boots and the like
IPC: A43B21/39
Filed: 1919-11-17
Abstract: 144,554. Hamilton, E. M. Nov. 17, 1919. Protectors, securing.-Circular rubber pads are secured in a flanged metal frame 1, Fig. 1, fixed by three lugs 2 to a boot heel. The pad is retained by a cross-bar 4 secured by a screw at 5. The pad may be thicker at one side, Fig. 4, to resist extra wear. In a modification, the bar 4 is hinged to the frame 1, and in another modification the bar is bolted at each end to the frame. Reference has been directed by the Comptroller to Specifications 7082/87, 21967/08, and 132,110.
Patent GB-895901-A (GB)
Title: Coupling for braid covered polytetrafluoroethylene hose
IPC: F16L33/207
Filed: 1958-09-04
Abstract: 895,901. Hose couplings. TITEFLEX Inc. Sept. 4, 1958 [Sept. 10, 1957], No. 28490/58. Class 99(1). In a method of assembling an end fitting on a braid-covered polytetrafluoroethylene hose 44 an insert 34 is placed in the end of the hose, and a collar 26 disposed over the braid of the hose is reduced in diameter by rotary swaging to put the braid and hose under very high pressure, the swaging being performed by blows distributed around the circumference of the collar at different angular locations during the swaging procedure to produce an evenly distributed compression force around the circumference of the hose. As shown, the coupling includes a body 10 provided with a screwthreaded portion 22 terminating in a shoulder 20 for engagement with a screw-threaded part 28 of the collar 26, and an integral tubular insert 34 for location within the hose and formed with annular ridges 42 having inclined side walls; the collar is formed with similar annular ridges 52 or a helical thread. In assembly, the collar is preferably screwed on to the hose and, after screwing of the insert 34 into the collar, swaging dies contract the collar progressively from the end thereof remote from the end of the hose to create a compression wave which moves axially along the hose and produces axial displacement of the material of the hose to form a ring of that material within the tapered end 62 of the collar. The hose is compressed between the collar and insert to approximately 30% of its original volume.
Patent GB-1425490-A (GB)
Title: Electronic speed governors for electric tools
IPC: H02P25/14
Filed: 1973-06-15
Abstract: 1425490 Control of A.C. motors ROBERT BOSCH GmbH 15 June 1973 [19 June 1972] 28517/73 Heading H2J A universal motor M driving an electric tool is supplied with alternating current from an A.C. source 10 through a Triac Th having two firing circuits, a first of which comprises a Diac D1, resistor R1 and capacitor C1 for setting a firing angle (adjustable by resistor R1) corresponding to a desired idling speed of the motor and the second of which comprises a Diac D2, resistors R2, R3 and capacitors C2, C3 for firing the Triac in response to the high-frequency commutation pulses at the motor sensed by the capacitor C2, chosen with members R2, R3 to ensure that capacitor C3 is responsive only to the commutation pulses, the arrangement being such that if the pulse amplitude is sufficient to fire the Diac D2, the Triac Th is fired at the start of a half-cycle of source 10 and if not, the capacitor C2 is immediately discharged again and the Triac is fired later in the half-cycle at an instant determined by the first firing circuit. The amplitude of the commutation pulses increases with increase in load on the motor so that,  although increased load will not always produce firing of the Triac due to the random variations in the amplitude of the commutation pulses, there will be, for each load increase, an increased number of full half-cycles in the supply waveform applied to the motor rising to the maximum possible (i.e. full wave supply) at full load, whereby the voltage applied to the motor is progressively increased with increase of load to maintain the motor speed approximately constant, Fig. 6 (not shown). Typical waveforms for idling, increased load and full load are discussed, Figs. 2, 3 and 4 (not shown), and the action of the commutation pulses during idling and full load operation is explained, Figs. 5a and 5b (not shown).
Patent GB-1477439-A (GB)
Title: Sulphenyl-carbamoyl halide compounds and their preparation
IPC: C07C/
Filed: 1975-07-07
Abstract: 1477439 Organic thiosulphenyl carbamoyl halides UNION CARBIDE CORP 7 July 1975 [8 July 1974] 28553/75 Heading C2C The invention comprises compounds of the formula wherein X is F or Cl, R is a (C 1 -C 8 )alkyl, (C 2 -C 8 )alkenyl or (C 1 -C 8 )alkyl substituted by one or more Cl, Br, F, NO 2  or CN, or is a phenyl or phenyl (C 1 -C 8 )alkyl which is either unsubstituted or substituted with one or more Cl, Br, F, NO 2 , CN, (C 1 -C 8 )alkyl, (C 1 -C 8 )haloalkyl or (C 1 -C 8 )alkoxy; and R 1  is an alkyl, alkenyl, cycloalkyl, bicycloalkyl, cycloalkenyl, bicycloalkenyl, phenyl(C 1 -C 8 )alkyl or phenyl group or is a phenyl(C 1 -C 8 )alkyl or phenyl group substituted with one or more Cl, Br, k, NO 2 , CN, (C 1 -C 8 )alkyl, (C 1 -C 8 )alkoxy, (C 1 -C 8 )haloalkyl, (C 1 -C 8 )alkanoyl or carbamoyl. They may be obtained by reacting (1) when X is F in the product, a compound of the formula with a compound of the formula in the presence of an organic base, (2) a compound of the formula with a thiol of the formula in the presence of an organic base, or (3) a compound of the formula with COX 2  in the presence of an organic base. The compounds are useful as intermediates in the production of insecticides.
Patent GB-244253-A (GB)
Title: Improvements in or relating to joints and couplings for pipes and tubes
IPC: F16L19/04
Filed: 1924-11-28
Abstract: 244,253. Lamont, J. H. Nov. 28, 1924. Joints with longitudinal pressure and with yielding outer part compressed. - Pipe couplings of the kind in which a tapered plug member e enters the flared ends of the pipes, the outer surface of the flared ends being engaged by conically bored sleeves a, b which are drawn together to secure the joint by a nut j, have the sleeve a arranged to be rotatable within the nut j but to be prevented from longitudinal movement by a flared portion m. Grooves may be provided in the plug e for holding rubber &c. packing rings h. Pipes of different diameters may be joined by using conical reducing sleeves. In a modification described in the Provisional Specification the flared portion of the part m is omitted.
Patent GB-1110977-A (GB)
Title: Mixed bacterial concentrates for the fermentation of milk
IPC: A23C9/123
Filed: 1965-07-06
Abstract: In the production of a stabilized, mixed bacterial concentrate, three types of bacteria are separately incubated in separate culture media viz.  (1) Streptococcus lactis, S. cremoris, Lactobacillus bulgaricus and/or Streptococcus thermophilus; (2) Streptococcus citrovorus and/or S. paracitrovorus; and (3) Streptococcus diacetylactis, the respective media are concentrated, as by centrifuging, to obtain separate concentrates of the three bacteria, the three concentrates are mixed together in predetermined proportions to produce a mixed concentrate without permitting further growth of the bacteria, and the mixed concentrate is frozen. The concentrate contains at least 10 x 109 cells per ml, and includes 2-25% by weight of glycerol (stabilizing agent), and nutrient medium.  Use of 20% or more of glycerol provides a concentrate which remains liquid below 32 DEG F. and is especially suited for making yoghurt.  The culture medium for the above-designated type (1) bacteria is neutralized during the culturing to maintain the pH between 5.2 and 6.6.  It is stated to be usually unnecessary to neutralize during the culturing of type (2) bacteria, except when corn steep liquor is used as the culture medium.  Where cottage cheese or hard cheeses are to be made, 98% by weight of the total bacteria in the concentrate should be of type (1) and 2% of type (2).  For making buttermilk, 1-4% by weight of the total bacteria should be type (3), 8% of type (2) and the balance of type (1).ALSO:In the production of a stabilized, mixed bacterial concentrate, three types of bacteria are separately incubated in separate culture media viz.  (1) Streptococcus lactis, S. cremoris, Lactobacillus bulgaricus and/or Streptococcus thermophilus; (2) Streptococcus citrovorus and/or S. paracitrovorus; and (3) Streptococcus diacetylactis, the respective media are concentrated, as by centrifuging, to obtain separate concentrates of the three bacteria, the three concentrates are mixed together in predetermined proportions to produce a mixed concentrate without permitting further growth of the bacteria, and the mixed concentrate is frozen.  The concentrate contains at least 10 x 109 cells per ml, and includes 2-25% by weight of glycerol (stabilizing agent), and nutrient medium. Use of 20% or more of glycerol provides a concentrate which remains liquid below 32 DEG F. and is especially suited for making yoghurt. The culture medium for the above-designated type (1) bacteria is neutralized during the culturing to maintain the pH between 5.2 and 6.6  It is stated to be usually unnecessary to neutralize during the culturing of type (2) bacteria, except when corn steep liquor is used as the culture medium.  Where cottage cheese or hard cheeses are to be made, 98% by weight of the total bacteria in the concentrate should be of type (1) and 2% of type (2).  For making buttermilk, 1-4% by weight of the total bacteria should be type (3), 8% of type (2) and the balance of type (1).
Patent GB-616954-A (GB)
Title: Improvements relating to variable speed power transmission
IPC: F16D67/00
Filed: 1946-09-25
Abstract: 616,954. Controlling change-speed gear. FORD MOTOR CO., Ltd. Sept. 25, 1946, No. 28660. Convention date, Oct. 27, 1945. [Class 80 (ii)] In a three-speed gear mechanism in which first speed is obtained by a hydraulic coupling, and second and third speeds by hydraulic governor-controlled fluid clutches which cut out the hydraulic coupling and drive through a multiple planetary gearing, a reciprocating valve is provided, which, on excess travel opens the third speed clutch supply to exhaust and thus provides second speed for acceleration purposes. The change-speed gear of Specification 615,175 is modified by the provision of a piston valve 62 mounted for vertical movements in the gear casing 56. The valve 62 has a bore 64 open at the lower end and in communication with an annular groove 81 at the upper end, and is movable axially by a cam 69 on a shaft 71 rotated by the levers 73 or 74, coupled to the accelerator and a manual control respectively. Movement of the valve is opposed by a spring 63 which bears at its lower end on a perforated disc 65 secured in the gear casing. The end of the valve can also bear on a second spring 82 when approaching full travel. The pressure chamber 43 of the fluid pump communicates through a passage 76 with an annular groove 75 and thence to a passage 77 leading to the third speed clutch conduit as shown in Fig. 4, which represents the conditions within the normal travel of the accelerator. Increased travel results in the valve covering the passage 76, and the passage 77 being connected to exhaust through the groove 75 and passage 78, which disengages the third speed clutch. Still further travel of the accelerator causes the valve to overcome the additional resistance of the spring 82 and aligns the groove 81 with the passage 76, thus connecting the pressure chamber directly with exhaust, which, providing the pump speed is not sufficient to enable it to overcome the loss, will result in disengagement of both clutches. The valve thus provides a " kick-down " shift from third to second and from second to first speeds providing the road speed is lower than a predetermined maximum, a higher speed than which would prove detrimental to the engine.
Patent GB-1135705-A (GB)
Title: Improvements in or relating to spark gap devices having insulators in the form of pastes
IPC: H01T1/00
Filed: 1967-06-21
Abstract: 1,135,705. Spark gaps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 21 June, 1967 [24 June, 1966], No. 28666/67. Heading H1X. The insulator 5 of a surface discharge spark gap between electrodes 1 and 2 is a paste which can be moved forward as erosion occurs. A plug 5 of paste contained in a bore 4<SP>1</SP> in an insulator 4 is moved forward by a piston 6 provided with a screw-thread mounting 6<SP>1</SP> and rotated by an electric motor. An optional ignition-electrode 3 is provided. The paste may be a colloidal mixture of a powdered insulating material, e.g. Al 2 O 3  and a liquid to which powdered SiO 2  may be added to prevent precipitation, or may be a liquid containing finely dispersed SiO 2 . The preferred liquid is water, and a hygroscopic substance, e.g. AlCl 3  may be added to the paste. Alternative liquids are transformer oil, glycerine, silicone oil, and a fluorocarbon. The spark gap may be used for printing and punching in data processing.
Patent GB-927407-A (GB)
Title: Improvements relating to electrical contact members
Inventor: CULLENDER HENRY FRANCIS
IPC: H01R13/40
Filed: 1960-08-18
Abstract: 927,407. Holders for thermionic valves. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 15, 1961 [Aug. 18, 1960], No. 28677/60. Class 38 (1). An electrical contact member comprises a U-shaped body portion 1 with two resilient side arms 2, 3, which may be attached to two supporting members 22, 25. Two resilient contact pieces 4, 5 extend from the side arm 2 to form a socket portion which is secured to the holder 22 by a tag 6 and laterally projecting surfaces 7, 8, integral with 2, abutting against the ledge 23 and ledges 24 respectively. The side arm 3 is bent to form a tag 9 and two ears 11, 12, which abut respectively against cooperating surfaces 26, 27 on the board 25, and may be released by rotating the arm 3 about its junction with the body portion 1. The tag 9 can be soldered to a printed circuit on the board 25, after the valve holder has been secured within an aperture on the board by two or more contact members as described.
Patent GB-243018-A (GB)
Title: Improvements in or relating to oscillatory circuits and tuning means therefor
IPC: H03J3/28
Filed: 1925-11-14
Abstract: 243,018. Telefunken Ges. f³r Drahtlose Telegraphie. Nov. 15, 1924, [Convention date]. Heterodyne receiving systems; tuning- apparatus, construction and control. of. -The natural frequencies of two oscillatory circuits, particularlv in the case of a heterodyne receiver, are simultaneously varied in such a way that over a considerable range the difference between the two frequencies is constant. Thus the circuits I, II, Fig. 1, have different constant inductances L1, L2, and equal variable capacities, Cv ; but the circuit II has in addition a constant capacity Cs in series with Cv. If these elements be suitably chosen then if the two capacities Cv be varied simultaneously by means of a mechanical coupling the frequency difference will be approximately constant over a considerable range. Alternatively the circuits may have different constant capacities C1, C2, and equal variable inductances Lv, a fixed inductance Ls being connected in parallel in one case, as shown in Fig. 3.
Patent GB-175676-A (GB)
Title: Improvements in means for fastening collapsible structures such as display stands
IPC: A47F5/10
Filed: 1920-10-11
Abstract: 175,676. Brady, J. A. Oct. 11, 1920. Hinges for detachably securing together in an assembled position the parts of collapsable structures such as display stands, more particularly of the kind described in Specification 142,457, [Class 52 (i), Furniture, Fittings &c. for], comprise hinge plates 11, 12 secured to the riser and tread members 5 of the stand, and a screwed pin 17 which is passed through the plate 14 and into engagement with a screwed socket 18 on a supporting-member 8. The hinge plate is bent outwardly at 14, as shown in Fig. 3, to enable the shelf members to be folded one on the other, and the part 15 is cut away to bear against the screwed socket on the upright support. The top shelf is secured to the end supporting-member 8 by screwed pin and socket members 22, 24.
Patent GB-849388-A (GB)
Title: Improvements in or relating to textile fibre drafting mechanisms
Inventor: BURNHAM VIRGIL A
IPC: D01H5/54
Filed: 1958-09-08
Abstract: 849,388. Roller weighting mechanism. SACOLOWELL SHOPS. Sept. 8, 1958, No. 28793/58. Class 120(2). [Also in Group VIII] In a three-roll stack of a textile drafting mechanism a driven magnetic roll 14 supports and drives a resilient-surfaced bottom drafting roll 16, which supports and transmits drive to second magnetic roll 24 and contains magnetic weighting means. Short drafting rolls 16 are mounted by gudgeons 18 in slots 20 for movement relative to the roll 14, which extends the length of the machine, and drive is transmitted through resilient bosses 22 which are mounted on the roll 16 and co-operate with fluting on the roll 14. The roll 24 is similarly mounted for movement relative to the roll 16 and carries aprons 26 which run in contact with the bosses 22, one strand being drafted between each apron and boss, and are tensioned by a ferrous bar 32 mounted in ferrous cradle members 33. A permanent magnet 38, which is mounted centrally of the roll 16, serves to attract the roll 16 towards the roll 14, and the roll 24, bar 32 and cradle 33 towards the roll 16. The stack may be mounted between holding rolls 6, 8 and delivery rolls 2, 4, both pairs being magnetically weighted. The lower rolls may be finely fluted and the upper rolls provided with resilient bosses 12. The stack may also be used as a front or delivery roller assembly and the roll 16 may have an apron instead of the boss 22.