baber/WOPTO huggingface dataset:
Patent GB-1209543-A (GB)
Title: Improvements in or relating to semiconductor devices
IPC: H01L29/8605
Filed: 1968-02-08
Abstract: 1,209,543. Resistors; semiconductor devices. INTERNATIONAL BUSINESS MACHINES CORP. 8 Feb., 1968 [15 Feb., 1967], No. 6339/68. Headings H1K and HIS A resistor comprises semi-conductor material doped with both donor and acceptor-type shallow-level impurities, the total impurity concentration being greater than 8 Î 10<SP>18</SP> atoms/cm.<SP>3</SP> and the relative concentration of the two types of dopants being such as to create between 1À7 x 10<SP>18</SP> and 1À3 Î 10<SP>19 </SP>free carriers/ cm.<SP>3</SP>. With these concentrations the effect of impurity scattering on the carrier mobility is enhanced relative to that of lattice scattering so that, over the operating temperature range, the resistor has a zero or negative temperature coefficient. Preferably the donor concentration exceeds the acceptor concentration, the ratio between the two being between 1:1 and 3:1. In one embodiment (Fig. 1a) the resistor is constructed by depositing a masking layer 13 of SiO 2  on a phosphorus-doped silicon base 11. Arsenic and boron are then diffused, either together or in two separate diffusion processes, into region 15 through an opening in the masking layer, and, finally, a masking layer 17, metal contacts 19 and a further masking layer 21 are deposited in succession.
Patent GB-821168-A (GB)
Title: Improvements in and relating to the bleaching of textile materials
IPC: D06L4/26
Filed: 1957-02-26
Abstract: Textile fibres, yarns or fabrics are bleached with an aqueous solution of sodium and/or potassium chlorite acidified with an alkylene glycol polyester having free carboxyl groups.  The textile material may be composed of polyamides, polyesters, polyacrylonitrile, polyvinyl compounds, cellulose acetate, cotton or linen.  The polyester may contain ether linkages and free hydroxy groups and may be formed by esterifying an alkylene glycol with a stochiometric excess of a dicarboxylic acid.  Starting materials specified are triethylene glycol and succinic acid.  The processes in the examples are effected in (1) apparatus made of stainless steel in which the bleaching composition contains sodium nitrate and (2) in a ceramic apparatus.  Temperatures in the order of 80 DEG  C. are specified.  In Example (1) the material (linen) is given an after-treatment with caustic soda, formaldehyde sulphoxylate, soap and a wetting agent and rinsed with hydrochloric acid.
Patent GB-356126-A (GB)
Title: Improvements in or relating to mowing machines
IPC: A01D34/06
Filed: 1930-02-26
Abstract: 356,126. Mowing - machines. BARTHET, O., L'Isle-de-NoÙ, Gers, France. Feb. 26, 1930, No. 6378. Convention date, Feb. 26, 1929. Void [Published under Sect. 91 of the Acts]. [Class 6 (iii).] The cutter bar 11 of a mowing machine is driven by a motor 1 mounted on the frame of the machine and driving through pulley and belt gearing a shaft carrying a crank 6 connected to the cutter by a connecting rod 10.
Patent GB-1498529-A (GB)
Title: Implantable heart pacer
IPC: H01B17/30
Filed: 1975-02-14
Abstract: 1498529 Implantable heart pacemakers AMERICAN OPTICAL CORP 14 Feb 1975 [14 Feb 1974] 6384/75 Heading A5R An implantable heart pacemaker 10, Fig. 1, comprises an encapsulation of insulating material 122 containing a pulse generator 42, Fig. 4, for providing stimulation impulses, and a recess 11, Fig. 1, in the surface of said encapsulation for receiving the ends of electrodes contained within a catheter and for connection to a patient's heart, said electrodes being connectible to the pulse generator by leads 20, 21 within said encapsulation, leakage of body fluids along leads 20, 21 being halted by shields 22, 23 having apertures through which said leads extend and to the metallic coatings of which apertures the leads are soldered, the shields being bonded to the encapsulation. In a modification, each lead is in two parts and each shield contains two metallic coated apertures to the coating of which a respective part of the lead is soldered. The encapsulation may comprise an epoxy material, the shields being made of a glass-epoxy laminate. Batteries 12-16 power the pulse generator and a heart beat detector 43, Fig. 4, which controls the operation of the pulse generator. The pacemaker may provide stimulation at a fixed rate or only when required and in proper sequence to the two chambers of the heart.
Patent GB-491518-A (GB)
Title: Improvements in or relating to automatic centrifugally controlled clutches
IPC: F16D43/10
Filed: 1937-03-04
Abstract: 491,518. Friction clutches. NEWTON, N. B. March 4, 1937, No. 6399. [Class 80 (ii)] In a centrifugal friction clutch having centrifugally-actuated clutch-engaging levers 24, each lever is associated with both an auxiliary centrifugal mass and with a main centrifugal mass which come into action in succession so as to provide two-stage engagement. As shown, main spring-retracted masses 14 are slidable radially on the driving flywheel 10 and are slotted at 20 to receive one end of the levers 24, pivoted on the flywheel. The other end of the levers coact with a spring- retracted plate b which acts on the presser plate a through springs the extension of which is limited by studs e which are secured to the plate a and which have collars f engaging behind the plate b. The studs e are secured to one end of spring blades g, the other end of the blades being secured to the back plate c fixed in spaced relation to the flywheel. An auxiliary mass 20b is slidable radially in each main mass 14 and coacts directly with the lever 24. As the speed increases above idling speed, the auxiliary masses first move outwards and produce light engagement of the clutch, and, at a higher speed, the main masses move outwards against their springs and apply additional pressure to the levers through the auxiliary masses. In a modification, the levers are weighted to provide the auxiliary masses and swing outwards under their own centrifugal action to produce light clutch engagement before the main masses begin to move. Specifications 436,747 and 483,102 are referred to.
Patent GB-878412-A (GB)
Title: Actuating apparatus for venetian blinds
IPC: E06B9/308
Filed: 1958-02-27
Abstract: 878,412. Venetian blinds. METALLBAU A. G. Feb. 27, 1958 [Feb. 28, 1957], No. 6429/58. Class 20(3) The drum 2 for a blind lifting cord Z and a tilting web supporting frame 1 whereby the angle of the slats may be varied are secured together on a shaft 3 and means are provided to prevent tangling of the lifting cord and lateral slipping of the web T. The means take the form of (a) circumferential rims 5, 14 on the drum 2 and frame 1 respectively; (b) a cover plate 6 retained in a position just clear of the lifting cord and web by springs 9 and slotted at 13 to receive the rims 5; and (c) a spring pressed bar 16 sliding in a radial slot through the integral drum and frame and bearing on the inner surface of the roll of blind lifting cord. When tension in the cord is relaxed as by the blind meeting an obstruction or reaching full extension the bar 16 slides outwardly to abut a stop 20 on the housing carrying the shaft 3, thus preventing further rotation of the shaft and a consequent overrunning of the cord. The web T is slotted at L to enclose the drum 2 this portion of the web being releasably secured at V to the remainder of the web. Collars 15 of larger diameter than the pivoting frames support the webs so that when an extreme pivoting position of the slats is attained the collars slide more easily over the frames than would the webs.
Patent GB-402735-A (GB)
Title: Improvements in or relating to capless electric incandescent lamps or discharge tubes and holders therefor
IPC: H01J5/60
Filed: 1932-03-03
Abstract: 402,735. Electric incandescent lamp caps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. March 3, 1932, No. 6464. Void [Abridged as open to inspection under Sect. 91 of the Acts, March 6, 1932]. [Class 39 (ii).] A capless electric incandescent lamp bulb, or an electric discharge tube such as a thermionic transmitting or receiving valve, X-ray tube or the like, is detachably connected to a cap by the interengagement of members which are coupled together by a straight pushing movement. The bulb 1, Fig. 1, is provided with a stem-tube 2 and pinch 3 through which the leading-in wires 4 pass at opposite sides of an exhaust tube 6, the cap 8 being provided with an extension 9 which fits within the interior of the stem tube 2 and is provided with two tubular channels 13 each containing a helical spring 12. Pins 10 extending downwardly from the contact plates 11 of the cap are gripped by the upper portions of the springs 12, and when the cap extension 9 is pushed within the stem-tube 2 the leading-in wires 4 pass axially within the lower portions of the springs, the relative dimensions being such that a closely gripping contact is provided. Rotary movement of the cap relatively to the bulb may be prevented by pinching a portion of the stem-tube 2 so that it is of the crosssection shown in Fig. 4, and making the capextension 9 of corresponding non-circular section. In a modification the cap 22, Fig. 5, is provided with blade-springs 23 which are offset at their lower ends to form a recess 24 adapted to engage a right-angled bend 21 at the upper ends of the leading-wires 18, the form of the springs 23 being such that they press the bent ends of the leading-in wires against the exhaust tube 20 and ensure greater rigidity.
Patent GB-267519-A (GB)
Title: Stereoscopic kinematographic apparatus
IPC: G03B35/10
Filed: 1927-03-08
Abstract: 267,519. Moraz, H. March 12, 1926. [Convention date]. Void [Published under Sect. 91 of the Acts]. Stereoscope systems; stereoscopic kinematography. - Kinemato - graphic stereoscopic views are taken on a single film of normal size and arranged side by side, the height of the images being equal to the distance between two of the film perforations. The optical system comprises two pairs of reflecting prisms 1, 2, each of which are pivoted for adjusting the position of the images, by which the rays are reflected through two objectives 3 on to the film 4 through a rotating shutter 5.
Patent GB-139798-A (GB)
Title: Improvements in or relating to carriage mechanism for typewriters
IPC: B41J19/66
Filed: 1920-03-03
Abstract: 139,798. Akt.-Ges. vorm. Seidel & Naumann. July 12, 1918, [Convention date]. Letter-spacing mechanism. - Escapement mechanism comprising a dog 1, Fig. 1, which normally engages an escapement wheel 2, is rendered silent during carriage-return by providing the dog with a pawl 9, co-operating with a ratchetwheel 7 which is frictionally coupled to the escapement wheel. During letter-spacing, the escapement wheel is engaged alternately by a dog 3 and the dog 1, and turns in the direction of the arrow, the ratchet-wheel being ineffective. When the carriage is returned, the dog 1 is released and is held in contact with a stop 10 by the engagement of the ratchet-wheel with the pawl. The ratchet-wheel may be coupled to the escapement wheel by a spring plate 8. In the mechanism shown in Fig. 4, the dog 19 that normally engages the escapement wheel 12, and the alternative dog 13 are mounted on the same pivot 22, and the pawl 21, co-operating with a ratchet-wheel 11 which is frictionally coupled by a spring plate 14 to the escapement wheel is also mounted on the pivot 22. During letter-spacing, the ratchetwheel rocks the pawl idly in opposition to a spring 15. When the carriage is returned, the pawl is raised and, by abutting on a pin 20, raises the dog 19 into contact with a stop 23.
Patent GB-457722-A (GB)
Title: Improvements in and relating to the production of composition friction elements and backings therefor
IPC: D03D3/00
Filed: 1936-03-04
Abstract: 457,722. Coated fabrics. POLLAK, J. E., 20, Holborn, London.-(American Brakeblok Corporation; 4600, Merritt Avenue, Detroit, Michigan, U.S.A.) March 4, 1936, No. 6604. [Class 140] [See also Group IX] A fabric backing for composition friction elements consists of a strip cut from a relatively wide sheet wherein the warp threads are arranged in pairs 5, 6 across the sheet and the weft threads 7 alternately pass above and below the warp threads, the pairs of warp threads and the weft threads being spaced apart to provide openings in which the composition material of the elements may anchor. The threads comprise metallic cores having a fabric covering including asbestos. Locking threads 8 pass diagonally over the pairs of warp threads in opposite directions on opposite sides of each weft thread longitudinally of the fabric, and under each weft thread in opposition to a warp thread passing thereover. The locking threads are smaller than the warp and weft threads, and the weft threads may be smaller than the warp threads. Before weaving, the threads may be sized, and the fabric may be coated with a vulcanizable indiarubber solution before packing the body material of the elements on to the strips. The rubber coating protects the backing when the body material is cured.
Patent GB-1403276-A (GB)
Title: Fluid droplet printer
IPC: G06K15/10
Filed: 1973-02-12
Abstract: 1403276 Printers INTERNATIONAL BUSINESS MACHINES CORP 12 Feb 1973 [6 April 1972] 6757/73 Heading G4H [Also in Division B6] An ink droplet printer comprises droplet generation means 25, droplet deflection means 32, 33 and droplet charging means in the form of a plurality of charging elements 35 spaced along the path of travel of a droplet, selection of a charging element governing the position at which the droplet strikes a record medium 27. The charging elements 35 are supplied from a constant voltage source V 1  under control of shift registers 40-42 responsive to data input lines 43-45 and single shots 49-51 controlling phase synchronism. A phase maintenance system 47 responsive to a drop formation oscillator 29, drop charging pulses and phase sample pulses, for example one for each line printed, includes a logic box (54, Fig. 3, not shown) and controls the single shots 49-51.
Patent GB-460394-A (GB)
Title: Process for the manufacture of agglomerates from carbonaceous material without addition of a binder, and products resulting from this process
IPC: C10L5/08
Filed: 1935-06-24
Abstract: 460,394. Agglomerating fuel. HIGHWAY, W. L., [Representative of HARDY, H. A.]. June 24, 1935, No. 6775/36. Divided out of 445,208, under which a Specification was laid open to inspection under Sect. 91 of the Acts, July 24, 1935. Drawings to Specification. [Class 50] The process for the manufacture of agglomerates with a brilliant crystalline-looking internal structure as described in Specification 445,208 is modified by subjecting the hot material to a pressure higher than the minimum necessary at the given temperature and for a shorter period. The pressure may be increased to such a degree that it need be of only instantaneous duration. The material may be cooled and agitated for a time dependent on the particular material in order to shorten the compression period without allowing the agglomerates to inflate or foliate. In an example, a coal which under the process described in Specification 445,208 is heated to 420‹ C. and pressed at 225 kg./cm.<2> for 7 minutes is left for 2 minutes outside the oven and is pressed at 300 kg./cm.<2> for 5 minutes.
Patent GB-1477295-A (GB)
Title: Effervescent dipeptide sweetener tablets
IPC: A23L27/30
Filed: 1976-02-20
Abstract: 1477295 Sweetening tablet GENERAL FOODS CORP 20 Feb 1976 [26 Feb 1975] 06808/76 Heading A2B An effervescent dipeptide sweetener tablet comprises (i) a water soluble dipeptide sweetener composition containing a major amount of a dipeptide sweetener (ii) a dry carbonation system containing a major amount of calcium carbonate and (iii) anhydrous citric acid. The preferred dipeptide is L-aspartyl-L- phenylalanine methyl ester (APM) and both the APM and calcium carbonate compositions are co-dried with a soluble carbohydrate, suitably MOR-REX, a low D.E. (about 10) malto dextrin. The tablet preferably contains the sweetening composition, carbonation system and citric acid in a wt. ratio of 1.5:3.4, the sweetening composition being a 60/40 blend of APM/MOR-REX and the carbonation system being a 50/50 blend of CaCO 3 /MORREX. The blends may be prepared by cospraydrying solutions or dispersions of the various components.
Patent GB-1178725-A (GB)
Title: Device for Producing Useful Energy Comprising a Portable Vibration Source
Inventor: SAWYER HAROLD T
IPC: B06B1/16
Filed: 1967-02-13
Abstract: 1,178,725. Agitating liquids by sonic vibrations. H. T. SAWYER. 13 Feb., 1967, No. 6864/67. Heading B1C. [Also in Divisions D1 and G5] A hand-held apparatus for immersion in a liquid to generate sonic vibrations therein, primarily for washing clothes, comprises a liquid-tight shell 10 wherein is a variable speed motor 30 carried at one end in a spring 32, while at the other end of the motor shaft 28 is connected to a crank 24 rotatable in a bearing housing 21, whereby the motor 30 performs a conical pendulum motion. The vibrations 80 generated are transmitted to the shell at 15 by the bearing mounting bracket 16. A handle 46 has sonic vibration absorbers 50, 51, 52. Preferably the motor speed is 3,000-9,000 rev/min generating vibrations of 50-150 cycles/sec.
Patent GB-403251-A (GB)
Title: Improvements in the manufacture of crepe fabrics
Filed: 1933-03-07
Abstract: In producing cr<\>zepe fabrics, reference being made to Specification 349,121, [Group IX] a mixed fabric whose warp and/or weft contains both yarns of organic derivatives of cellulose and stretched yarns of regenerated cellulose are treated with a re-agent, such as water or aqueous solutions, that causes the regenerated cellulose to shrink but does not so affect the organic derivative yarn.  The fabric may have a warp consisting wholly of yarns of cellulose acetate or wholly of yarns of regenerated cellulose, cotton, natural silk or wool, while the weft may be of one, two or more picks of stretched yarn of regenerated cellulose alternating with one, two or more picks of cellulose acetate yarn or the composition of the warp and weft may be interchanged.  The yarns may have a relatively low twist or, if desired, a high degree of twist.  Prior to weaving the regenerated cellulose yarns are stretched from 5 to 10 per cent or more, e.g. by wetting, stretching and drying under tension.  Where such yarn is part of the warp it may be so stretched during sizing.  The alternation of organic derivative of cellulose yarn and stretched regenerated cellulose yarn may be regular or such as to produce stripes, checks or complicated designs.  The fabric may be constructed with any desired weave, but preferably so that the organic derivative yarn floats on the face and/or back, to impart fullness and softness.  The shrinking agent, e.g. water or aqueous solutions which may be at ordinary temperatures or at elevated temperatures up to boiling, may be applied to the fabric by rinsing or soaking therein or during finishing e.g. scouring or dyeing.  It may be applied to the whole surface or locally as on the stencils. The fabric after treatment may be dyed printed or finished in any manner, or subjected to delustring of the organic derivative yarn or this yarn may be delustred before weaving or contain finely divided pigments reducing its lustre.  In an example a warp having 70 ends per inch of regenerated cellulose yarn of 100 denier having 2.5 turns per inch is wetted and stretched 10 per cent or more and is sized and dried under tension and alternated with a warp of 70 ends per inch of sized cellulose acetate of 150 denier having 3 turns per inch.  The filling inserted in the warp is a composite yarn formed by doubling with a twist of 5 turns per inch of one end of cotton yarn having a 60 single count and three ends of cellulose acetate yarn each of 75 denier having 5 turns per inch.  The fabric is scoured, dyed and/or otherwise finished with aqueous baths and dried not under tension. It may be subjected to the action of hot aqueous fluids at or near the boiling point to delustre the cellulose acetate yarn.
Patent GB-1479242-A (GB)
Title: Coupling assemblies
IPC: E02F9/12
Filed: 1975-02-19
Abstract: The present invention relates to the construction of a slide connecting two bodies.
Patent GB-702279-A (GB)
Title: Improvements in the preparation of potassium bicarbonate
IPC: C01D7/16
Filed: 1951-03-27
Abstract: Potassium bicarbonate is prepared by reacting carbon dioxide with an aqueous solution containing potassium chloride and monoethylamine and/or diethylamine.  The postassium bicarbonate formed is precipitated and the amine may be recovered by treating the mother liquor with lime.  The reaction may be effected under pressure at ordinary temperatures.  The ethylamine reagent may be formed by treating an aliphatic alcohol with ammonia.  The potassium bicarbonate may be converted to carbonate in known manner.
Patent GB-363564-A (GB)
Title: Improvements relating to mudguards for perambulators or pedal motors
IPC: B62B9/16
Filed: 1931-03-07
Abstract: 363,564. Mudguards. SPEEDWELL GEAR CASE CO., Ltd. and SPENCER, J., 276, Broad Street, Birmingham. March 7, 1931, No. 7186. [Class 136 (i).] A device for connecting the inner ends of the stays of mudguards for perambulators or pedal-operated children's motor-cars to the axle or to a frame member comprises a centre piece and an attachment clip made wholly integral with the centre piece ; or the centre piece may be made in two parts each of which is integral with one part of a two-part clip. In the form shown in Fig. 2, a centre piece 4, to which the stays 2 are secured, and the clip are made from a single blank, the lower part 10 of which is perforated at 9 and doubled over sidewise about its central vertical axis, thus forming two arms 11, 12, which are clamped on the axle 14 by means of a bolt 15 and nut 18. The bolt 15 is prevented from rotating by the engagement of a flat 17 on its head with the centre piece 4. In a modification, the perforated clip part is doubled up about a horizontal axis, the bolt being located in the horizontal bend thus formed. The construction shown in Fig. 7 is made in two parts pivoted together at 27 and formed of lugs 21, 23 and doubled-over clip arms 11, 12 integral with the lugs 21, 23 respectively, the arms 11, 12 being recessed at 24 to receive the axle &c. and being drawn together by means of a bolt 29 of which the head 30 fits in a recess 26. In the form shown in Fig. 11, the stays 22 are integral with parts 34, 35, which are riveted together to form the centre piece and are integral with parts 37, 38, 39 forming the clip.
Patent GB-835650-A (GB)
Title: Attitude-indicating instruments
IPC: G01C19/32
Filed: 1958-03-06
Abstract: 835,650. Gyroscopic apparatus. SPERRY RAND CORPORATION. March 6, 1958 [April 3, 1957], No. 7190/58. Class 97(3) In a gyrovertical, a spherical indicator shell is pivoted about an axis parallel to but displaced from the axis of an inner gimbal carrying the rotor and is mechanically coupled to this gimbal. As shown, rotor casing 20 is carried on a steel trunnion 42 (constituting the inner gimbal) jcurnalled in an outer sheet steel rectangular gimbal 13 carried in bearings 14 and 15. Truncated spherical indicator shell 24 is carried by arms 45 having coaxial shafts 44. Shafts 44 are journalled in bearings 26 carried on plates 56 which are adjustably mounted on gimbal 13 to vary the distance between meshing gears 41 and 43 fixed on trunnion 42 and shaft 44, respectively. Weight 46 counterbalances arm 45. The angle of bank is indicated by meridianal line 31 on bank index scale 34 and the two halves of the shell 24 above and below the horizon line 32 are differently coloured. Reference has been directed by the Comptroller to Specification 666,615.