baber/WOPTO huggingface dataset:
Patent GB-937617-A (GB)
Title: Improvements in or relating to the modification of thermoplastic maleimide polymers
IPC: C08G59/50
Filed: 1960-06-22
Abstract: A normally solid thermoplastic product comprises the reaction product of (i) an N,N1-bis-maleimide of formula:-  <FORM:0937617/IV(a)/1> where R1 is a divalent hydrocarbon group, with (ii) an a -pyrone of formula:-  <FORM:0937617/IV(a)/2> where R3 and R5 are halogen, H, alkyl or carbalkoxy, and R4 and R6 are halogen or aryl or substituted aryl groups.  The process is conducted by heating to a temperature sufficient to cause evolution of CO2 to give a polymer of formula:- <FORM:0937617/IV(a)/3> The reaction is preferably conducted in the presence of (iii) halogenated hydrocarbon solvents and the polymers are soluble both in these and in (iv) dimethyl formamide.  Lists of suitable compounds are given of which the following are used in the examples:- (i) N,N1-(4,41-diphenylmethane)-bis-maleimide and N,N1-hexamethylene-bis-maleimide; (ii) 4,6-diphenyl-2-pyrone and perchloro coumalin; (iii) s-tetrachloroethane \sBphenol, and a -chloro-naphthalene; and (iv) dimethyl formamide.  The polymer is precipitated from solution by adding excess methanol.
Patent GB-641257-A (GB)
Title: Improvements in or relating to lubricating systems for machine tool installations
IPC: F16N13/16
Filed: 1947-08-08
Abstract: 641,257. Liquid - actuated lubricating pumps. AUTO RESEARCH CORPORATION. Aug. 8, 1947, No. 21873. Convention date, Aug. 3, 1940. [Class 102(i)] [Also in Group XXXIV] In a lubricating system for a machine tool having a central reservoir, a central pump, a branched conduit system, and flow metering devices consisting of outlet fittings having pins closely fitting in bores, the pump is actuated by a piston motor which is actuated by a source of hydraulic pressure used in operating the machine. A U- shaped bracket A, Fig. 1, carries axially aligned hydraulic motor B and pump unit C. The latter comprises a piston plunger 10 fitting in a bore 11, inlet and outlet check valve units E, F and an inlet filter D. The motor unit B has a piston member 41 sliding in a central bore 40 and an inlet 48 to which the source of hydraulic pressure is applied. A connecting rod 51 extends between plungers 10, 41 and is connected to each by a resilient arrangement of mushroom head 57. and a spring 58. A transverse pin 53 and washer 54 on the member 51 constitute the upper abutment for a spring 55 which forces the rod 41 against an adjustable stop 46. Pressure applied to the inlet 48 causes a discharge stroke, and on release of pressure the plunger returns under the action of spring 55. In a modification, Fig 4, the pump C<SP>1</SP> and piston motor B<SP>1</SP> are positioned at right angles to each other. The motor plunger 110 is reciprocated by pressure variations applied to ports 106, 107. Movement of the plunger 110 is transmitted to the pump plunger by a member 86 mounted on a shaft 87 having an arm 93, carrying a roller 95 engaging cam surfaces 96, 98 on the plunger 110, and an arm 84 connected to the pump,plunger. In another modification the unit is carried in the cover of the lubricant reservoir. The inlet connection to the motor is made in the top of the cylinder, and the stroke may be adjustably limited by nuts screwed on the connecting rod. Various other modifications of means for varying the stroke of the plungers are described.
Patent GB-1242414-A (GB)
Title: Inductive transducers
Inventor: STRAUCH HEINRICH
IPC: H01F37/00
Filed: 1968-05-08
Abstract: 1,242,414. 242, 414. Inductive transducers. ASSOCIATED ENG. Ltd. April 29, 1969 [May 8, 1968], No.21873/68. Heading G1N. An inductive transducer comprises a first coil 2 surrounding a core of iron wires 1 which are folded back over the outside of the coil at 1a, and a second coil 8 surrounding a core of iron wires 7 arranged around the first coil and folded back over the outside of the coil at 7a. An earthed screen 6 of ferromagnetic material is provided between the coils. Spaces 5 and 12 are filled with a resin. The radial spacing of the ends of the inner core is greater than that of the ends of the outer core. Circuit.-The coils 28 are connected in a bridge circuit, Fig.3, the output of which is detected in a synchronous detector 23 and fed to a recorder 26 or oscilloscope (not shown). The effect of the outer coil and core is to make the bridge output approximately linearly related to the distance of an armature (not shown) from the ends of the cores. The armature position may depend on temperature, vibrations, or a pressure being measured or its permeability may depend on a temperature being measured.
Patent GB-763294-A (GB)
Title: Improvements in rainproof fabrics
IPC: D06M17/00
Filed: 1954-07-27
Abstract: 763,294. Rainproof coated fabrics; laminated fabrics. UNITED STATES RUBBER CO. July 27, 1954 [Oct. 15, 1953], No. 21895/54. Class 140. An air-permeable rainproof fabric comprises an inner woven uncoated fabric 11 and an outer woven fabric 12 coated with a waterproof coating 15, such as rubber, except over those parts adjacent the parallel spaced-apart lines 20 where the fabrics are joined. The inner fabric has lesser dimensions between said spacedapart lines than those of the outer fabric, thus the whole fabric is formed into a looped arrangement whereby the coated portions of the outer fabric overlie its uncoated portions. This loop arrangement may be achieved by having yarns between the spaced-apart lines in one fabric with greater shrinking power than in the other. The fabrics may be joined by tying threads 13 or preferably may be woven as a double fabric. The coating is carried out prior to shrinking with mashing tapes over the portions which are to remain uncoated.
Patent GB-170127-A (GB)
Title: Improvements in or relating to sextants
Filed: 1920-07-22
Abstract: 170,127. Jones, T. J. July 22, 1920. Sextants. - Relates to instruments provided with a spring detent device operatively connected between the index bar and the tangent screw, so that the screw can be turned through . a known angle by the sense of touch alone. The tangent screw c is . mounted in a plain bearing c<2> and passes through a nut c<1>, both the bearing and the nut being carried by the index bar b. The bearing c<2> carries a bracket c<4> in which is mounted a spring plunger having a detent e<1> co-operating with notches formed on the periphery of a wheel f mounted on a squared part of the screw spindle. The notches are arranged in two series f<1>, f<2> of different lengths as seen in Fig. 1, and the wheel f is pressed against a collar f<4> by a spring f<3>. By turning the collar until a slot f<8> therein engages with a pin f<5>, the wheel is permitted to move axially until the notches f<2> coact with the detent. In this way the extent of rotation of the wheel between successive engagements with the detent can be varied. The plunger is urged outwards by a spring and has a threaded portion engaging a nut e<2> so that by turning the nut the plunger can be withdrawn. To ensure the close fitting of the clamp block against the index bar, the upper side of the index bar carries a plate b' in which is a curved slot b<4> into which pass projections carried by a plate b<5> secured to the clamp block d by a screw b<6>. A spring is arranged between the index bar and the clamp block. To allow of slight adjustment of the distance between the pivot axis of the nut c' and the axis of rotation of the index bar, the nut is mounted in an eccentric rotatable bush d<3>.
Patent GB-1471736-A (GB)
IPC: H01L29/04
Filed: 1974-05-17
Abstract: 1471736 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 17 May 1974 [18 May 1973] 22054/74 Heading H1K In integrated circuit manufacture the crystallographic plane of a surface 432 (Fig. 6) of a Si substrate 431 having diffused therein a pattern of highly doped regions 448 is selected so that the growth rate of an epitaxial layer 440 grown thereon is substantially independent of small variations in the crystallographic plane of the surface 432. This ensures that a profile pattern 434, 433, 435 formed on the surface 432 (e.g. by diffusion of the regions 448 in an oxidizing atmosphere and subsequent removal of the thin oxide so formed) is reproduced accurately in the upper surface 452 of the epitaxial layer 440 and may be used to correctly align subsequent diffusion &c. steps relative to the regions 448. In consequence no allowance need be made, in allotting area to the circuit elements, for displacement, distortion or disappearance of the profile pattern due to differential growth rates associated with small variations in crystallographic orientation. The permissible crystallographic planes for the surface 432 lie between a {001} face and an adjacent {111} face, deviating from the {001} face by at least 10 degrees and from the {111} face by at least 15 degrees (both these faces representing sharp minima in the growth rate/orientation curve) and deviation by at most 10 degrees from at least one of the faces of the crystallographic zone common to the {001} and {111} faces (viz. an <001> zone). The surface 432 is preferably within 10 degrees (at best 3 degrees) of a {115} face, where there is a relatively flat maximum in the growth rate/orientation curve. The {113} face is preferably avoided by at least 7 degrees, due to a small growth rate minimum which sometimes occurs at this orientation, and for dislocation-free Si the {112} face is preferably avoided by at least 6 degrees for the same reason. The invention is of particular value where the epitaxial layer 440 is required to be more than 5 microns thick. Fig. 8 is a detail of a stereographic projection based on the (001) plane showing the permitted planes as the unshaded cross-shaped area.
Patent GB-358619-A (GB)
Title: Improvements in suspension systems for vehicles
IPC: B60G21/055
Filed: 1930-07-23
Abstract: 358,619. Vehicle suspension systems. HORSTMANN, S. A., Onega Lodge, Upper Bristol Road, and HORSTMANN, Ltd., James Street West, both in Bath. July 23, 1930, No. 22171. [Class 108 (ii).] In a vehicle suspension system a torsion spring is combined with two levers connected by a link so as to give an increasing mechanical advantage over the load as the load increases. The apparatus may be so proportioned and arranged that the resultant load deflection characteristic substantially obeys the law for constant periodicity referred to in Specification 328,033. In the constructions shown at the two ends of the vehicle, in the Figure, each wheel 1 is mounted at the end of a twoarmed lever 2 the other end of which is connected by a link 5 to a lever 3 secured to the end of a torsion spring 4. The angles between the arms 2, 3 and the link 5 are such that the mechanical advantage of the link-work increases as the load increases in addition to the usual increase in resistance of the spring. Several modified arrangements of link work are shown and the invention may be applied in connection with the constructions disclosed in Specifications 303,912, 328,033, and 329,477, [all in Class 108 (ii), Road vehicles, Undercarriage details &c. for].
Patent GB-200393-A (GB)
Title: Improvements in and relating to water bottles
IPC: A61F7/08
Filed: 1922-08-15
Abstract: 200,393. Imray, O. Y., (Patterson, J. W.). Aug. 15, 1922. Hot - water bottles. - Seamless hot-water bottles of rubber or the like having a flat body merging into a filler spout, are formed with an inwardly projecting integral neck flange 13 fitted with a threaded socket 14.
Patent GB-660133-A (GB)
Title: Improved fuel injection means or apparatus for spontaneous ignition constant pressure internal combustion engines
IPC: F02M59/10
Filed: 1948-08-25
Abstract: 660,133. Fuel injectors. BLAKEWAY, R. S. Aug. 25, 1948 [Sept. 4, 1947], No. 22352/48. Class 7(iii) [Also in Group XXVIII] Fuel injection apparatus, having a resiliently opposed plunger 35 and motive piston 23 operated by the pressure in the engine cylinder which acts initially on a fractional area of the motive piston, has a pressure-balanced control means 56 movable in the pump cylinder 33 relative to the plunger and carrying a member 67 which controls the quantity of the fuel injected and effects instant cessation of injection and hydraulic stoppage of the moving parts. The space 66 between the plunger 35 and the control means or plunger 56 forms the pump chamber to which fuel is supplied under pressure through an inlet 85, filter 87, passages 95, 96 and port 97. The fuel passes through a bore 57 in the control plunger to the outer end thereof so that the latter is hydraulically balanced. The pump chamber communicates with an injection nozzle 48, having spray apertures 55, at the end of the piston through a bore 76, valve 77 and capillary bore 50, Fig. 4. Injection terminates when the end of the plunger abuts a ball 67a in the member 67. The fuel being thereby trapped in the pump chamber causes hydraulic stoppage of the moving parts. The stroke of the pump is varied by moving axially the control plunger 56 through a guided crosshead 60 and link 65 attached to a manual or governor control means. The injection timing is varied by adjusting the loading of a spring 38 through nut 41 and push-rods which act upon an abutment sleeve 36. A small byepass conduit 21 enables the cylinder pressure to act on the full area of the piston at starting, the effect of the byepass being reduced as the speed increases. The pump plunger and cylinder may be sleeved or lined with self lubricating materials such as oil or graphite impregnated metals.
Patent GB-1368344-A (GB)
Title: Tractor towable digging attachment for digging and cleaning  trenches or ditches
IPC: E02F5/08
Filed: 1972-05-12
Abstract: 1368344 Trenching or ditching machines PIETRO DONDI & FIGLI 12 May 1972 [14 May 1971] 22376/72 Heading ElF A digging unit for the digging of and/or cleaning out trenches or ditches comprises a wheeled chassis 1 that can be towed behind a tractor, and arm 21 mounted at a position between its ends on the chassis for pivotal movement about an upright axis and carrying at one end trench-digging means 48 and at the other end a counter weight 19, a means 11 for adjusting the attitude of the arm for ensuring the desired presentation of the digging means. The chassis can be coupled to the lift arms of a three point lift linkage of the tractor and can carry a platform 16 rotatable about said upright axis and lockable to the frame in two positions angularly spaced by 90‹ so that the arm 21, which is pivoted on the platform about an axis 27 at right angles to the upright axis can either extend rearwards parallel to or laterally at right angles to the direction of advance of the chassis. The arm can be a two part, articulated member 21, 25, the parts being movable relative to the frame and to each other by jacks 11, 33. The digging means may comprise one or more cutter teeth-armed discs 48 rotatably mounted on the output shaft(s) 49 of a gear box 26 pivotably supported on the outer part 25 of the arm and angularly adjustable thereto by a jack 43. Drive from the power take off of the towing tractor can be through shaft 27 and belt drive 52 and shafting within the arm part.
Patent GB-720069-A (GB)
Title: Improvements relating to primary electric batteries
IPC: H01M6/12
Filed: 1952-09-05
Abstract: 720,069. Batteries. RAY-O-VAC CO. Sept. 5, 1952 [Sept. 5, 1951; June 2, 1952], No. 22408/52. Class 53. A dry battery is made by attaching a number of bipolar electrodes Z, C, Figs. 1 and 2, to insulating strips 21, 21<SP>1</SP> by adhesive 34, placing one strip on the other with intermediate manganese dioxide and graphite cakes 19 and electrolyte absorbent pads 18 as shown in Fig. 3. The electrodes Z, C consist of pairs of zinc plates connected by tabs 13, one plate C of each pair being coated with a conductive layer such as a plastic material containing carbon. After the strips 21, 21<SP>1</SP> have been superimposed the edges are stuck together and the strips folded zigzag fashion at the points 41 to form a number of cells in series as shown in Fig. 4, each cell being entirely enclosed in an insulating pocket formed by the strips 21, 21<SP>1</SP>. To form a stack of cells joined in parallel the tabs 13 and strips 21, 21<SP>1</SP> are cut and the cells rearranged to bring all the terminals of like polarity to one side of the stack. A conductor is then soldered to the terminals on each side of the stack. Instead of the two strips 21, 21<SP>1</SP> a single wide strip may be used folded longitudinally to enclose the cell elements. Fig. 7 shows a zinc bipolar electrode having one portion protected from the electrolyte by being sandwiched between an insulating sheet 6 and a conducting sheet 5. The two parts of the electrode are folded over one another with a depolarizer cake and electrolyte and enclosed in a strip of insulating material to form a single cell. A number of cells in series may be formed by securing a number of such electrodes to strips 21, 21<SP>1</SP> as described with reference to Figs. 1 to 4.
Patent GB-268647-A (GB)
Title: Improvements in and relating to catches, spring fastenings and the like
IPC: E05C19/06
Filed: 1926-09-13
Abstract: 268,647. Shaw, A. L. Sept. 13, 1926. Catches yielding to pull and pressure comprise similar plates secured respectively on door and jamb, one plate having a resilient tongue adapted to engage resiliently with a rib, or with a resilient tongue, on the other. Preferably, the two members are identical and oppositely disposed and comprise plates 1 of channel form, provided with integral legs 7 for driving into the door &c. and with resilient tongues 3 struck up from the plate and bent as shown to provide engaging ridges 6. 268,679. Davidson, F. A. Feb. 1, 1926. Clips, band. - For securing rods, poles and tubes in position at varying angles, one clamp portion is provided with a bossed aperture 21 and lipped flange 23 to receive a projection 19 and flange 20 on the other clamp part respectively. Securing bolts 25 pass through the apertured Range portion 22 for securing at various angles. The rods are gripped in the clamp portions 7<1> by pivoted clamp portions 11 and securing bolts 16. Specificatfion 269,995 is referred to.
Patent GB-239864-A (GB)
Title: Improvements in or relating to bail handles for hollow-ware
IPC: A47J27/21
Filed: 1925-09-10
Abstract: 239,864. Fissler Ges., R. Sept. 11, 1924, [Convention date]. Handles.-The bail handle a of a pail, kettle, can, &c., hinged so as to be folded over for storage or transport, is hinged to brackets c and has a lug a<1> with an aperture which registers with a similar aperture in the adjacent bracket c when the handle is in the upright or lifting position and a bolt d is passed through the aperture to lock the handle in position; the bolt has a pivoted end e to prevent accidental displacement thereof. In a modification, the bolt is carried by a spring secured to the handle.
Patent GB-1027695-A (GB)
Title: Improvements in or relating to the treatment of sheets of aluminium or aluminium alloys
IPC: C23G1/12
Filed: 1963-06-06
Abstract: Aluminium or aluminium alloy sheets are treated by (i) pre-treating the sheet with an acid pickling solution (ii) uniformly electrolytically roughening the plate with alternating current in an electrolyte containing nitric acid and waste sulphite liquor together with an aromatic aldehyde or ketone or their derivatives, or pine needle oil, or mixtures thereof, (iii) anodizing the sheet in a direct current process electrolyte, and (iv) treating the sheet with an aqueous rinsing bath containing waste sulphite liquor together with an aromatic aldehyde or ketone or their derivatives, or pine needle oil, or mixtures thereof, and drying.  Preferably the first step is carried out at room temperature using a pickling bath containing 8 to 50% by volume of nitric acid, 5 to 25% by weight of ammonium difluoride, 4 to 10% by volume of waste sulphite liquor containing 1 to 20% lignin sulphonic acid as colloid particles up to 120 Angstroms and up to 1% of aromatic aldehyde or ketone and/or pine needle oil.  The electrolyte in the second step preferably contains 1 to 3% by volume of nitric acid, 1 to 3% by volume of waste sulphite liquor of the same composition as the first bath.  The roughing treatment is also carried out at room temperature with a current between 0.25 and 2 amps/dm2, 10 to 20 volts and 15 to 75 cycles per second.  The anodizing step is carried out in an electrolyte containing 16 to 18% by weight of sulphuric acid, 1.2 to 1.6% by weight of oxalic acid, 2.5 to 6% by volume of waste sulphite liquor of the same composition as the first bath. Preferably the anodizing is preferred with a direct current of 16 volts at 2.2 to 2.5 amps/dm2 between 20 DEG  and 30 DEG C.  The rinsing bath comprises 0.5 to 20% by volume of the waste sulphate liquor.
Patent GB-1157365-A (GB)
Title: Squeeze-Bag Resuscitator
Inventor: WALLACE DEAN R
IPC: A61M16/00
Filed: 1967-05-16
Abstract: 1,157,365. Assisting respiration. AIR REDUCTION CO. Inc. 16 May, 1967 [23 May. 1966], No. 22700/67. Heading A5T. A device for assisting respiration comprises a housing 10 having at one end a peripherally grooved flange supporting a normally expanded compressible breathing bag 16 and a branch tube 12 supporting breathing mask 14. A gas delivery passage 22 in the housing and the branch tube 12 communicate with a chamber 25 in which a spring-urged valve 26 is slidably supported by a stem 36 fixed to a removable bushing 30. The bushing has exhaust openings 32. For resuscitation, the breathing bag is alternately compressed, to drive gas to the mask and relaxed so that it is expanded by entry of air through passages 48' and a check valve formed by a rubber ring 46. As the bag is compressed, the valve 26 is moved away from one valve seat 24 against a spring 38 to abut a second valve seat 42 provided by the bushing so that the exhaust openings 32 are occluded. As the bag expands, the valve 26 abuts the first valve seat 24 to close the delivery passage and permit exhaled gas to pass from the mask through the exhaust apertures to atmosphere. The bag is made of thin flexible natural or synthetic rubber which is resistant to deformation and has spaced internal longitudinal radially projecting ribs 62 which urge the bag into expanded condition. The bag is sufficiently thin for the determination of the pressure of gas within it by feel. A passage 50 in a boss 52 on the housing communicates with one of the gas inlet passages 48' for supplying oxygen to the bag. A pressure relief valve 72 is disposed in a venting passage 76 in a boss 52' on the housing. The valve comprises a magnetisable ball 72 normally held against a seat 74 to close the venting passage by an adjustable magnetic rod 80. A pin 88 projecting into the venting passage holds the ball within the magnetic field on the rod 80 when the valve is opened against its closing magnetic force by excess pressure in the delivery passage.
Patent GB-284556-A (GB)
Title: Improvements in or relating to coal conveyors and the like
IPC: B65G27/00
Filed: 1927-08-30
Abstract: 284,556. Poxon, W. Aug. 30, 1927. Jigging conveyers.-The sections 1 of a jigging conveyer are held together by one or more steel cables 4 passed through axially aligned eyes 3. An abutment 5 is provided at one end of each cable which will not pass through an eye, and the other end is attached to a tensioning device 9, Fig. 5.
Patent GB-148068-A (GB)
Title: Improvements in tires
IPC: B60C7/16
Filed: 1919-09-16
Abstract: 148,068. Summers, J. G. Sept. 16, 1919, Metallic spring bodies and cores.-Longitudinally bowed springs 9 are mounted on the rim 7 and carry a band 8 bearing against a tyre cover 6 of ordinary construction. Springs 11 bridge the spaces between the springs 9, and both series carry transverse springs 9<1>, 12. The springs 9, 11 are outwardly bent at their extremities.