baber/WOPTO huggingface dataset:
Patent GB-578338-A (GB)
Title: Improvements relating to variable speed gears for cycles and the like
IPC: B62M9/126
Filed: 1944-02-25
Abstract: 578,338. Variable-speed gearing. FITZPATRICK, H., and FITZPATRICK, A. A. Feb. 25, 1944, No. 3499. [Class 80 (ii)] In a chainshifting mechanism for cycles and the like in which jockey sprocket A is carried on a slide B which is moved up and down an inclined guide C so that the sprocket occupies the same relative position to each of the different size sprockets 1, 2 or 3 of the wheel, the guide C forms part of a bracket D that can be turned about a vertical axis on a clip G secured to the frame and positively fixed by means of serrations E, F and a screw H in any position. A tensioning pulley M is carried by an arm L pivoted about the axle b of the sprocket A and tensioned by a spring N in a telescopic dust-cover O. The slide B is moved against this spring tension by a cranked lever k from a cable k<3> which may be operated by a control lever in conjunction with a plate or bracket as described in Specification 571,608.
Patent GB-580551-A (GB)
Title: Improvements in and relating to the preparation of materials for the production of photoconductive cells
IPC: C01G15/00
Filed: 1944-02-25
Abstract: Material for use in light-sensitive cells is produced by melting together thallium and sulphur in vacuo and melting the product with thallium hydroxide in vacuo.  The thallium is throroughly cleaned and freed from grease and placed in a quartz flask with pure crystallised sulphur.  The flask is then evacuated, sealed off and heated till the contents form a homogenous mass of thallium sulphide.  The flask is cooled and smashed and the sulphide ground and mixed thoroughly with an amount of thallium hydroxide in a quartz flask.  This is then evacuated and gently heated until the initial violent reaction is over and is then kept liquid till a visible separation of the material into two products occurs.  The flask is then sealed off and heated strongly at "orange heat" for 5-10 minutes and allowed to cool.  The contents include an outer dark mass which is rejected, an inner portion of lustrous grey appearance, which is the useful portion, and possibly an inner pellet of metallic thallium which is removed.  It is preferred to use sulphur and thallium in such proportions as to produce thallous sulphide and to produce light-sensitive material of the highest sensitivity; approximately one molecule of the thallous sulphide is mixed with one molecule of the hydroxide.  Other sulphides or mixtures of sulphides of thallium may be used with correspondingly higher molecular proportions of the hydroxide.  For example, sulphur and thallium may be mixed in proportions to produce thallic sulphide and heated and the products mixed with the hydroxide in the ratio of two molecules of the latter to one molecule of the former. Specification 580,550, [Group XL], is referred to.
Patent GB-1095893-A (GB)
Title: Photographic reproduction processes and materials therefor
IPC: G03C1/485
Filed: 1965-01-28
Abstract: Gelatin is modified by treatment with an aqueous solution of chloranil (i.e. tetrachloro-p-benzoquinone).
Patent GB-661465-A (GB)
Title: Improvements in pipe couplings
IPC: B28B21/20
Filed: 1949-02-11
Abstract: 661,465. Pipe couplings. KAY, F. April 6,1949 [Feb. 11, 1949]. No. 3819/49. Class 99 (i). In a coupling of the kind comprising a union 1 having intercommunicating limbs 2 on each of which is threadedly engaged a coupling nut 6 that forces a sealing ring 8 of wedge-like section into the shaped recess 5 of the limb, the thick end 10 of the ring, which may have an inclined face co-operating with a correspondingly inclined face 7a of the nut flange 7, is directly engaged by the nut, and V-shaped ridges 11 on the inside surface of the ring are forced into the pipe wall. The ring may be tapered at an angle of 10 to 20 degrees and the included angle beween the ridges may be 60 to 100 degrees. A thin-walled liner 12 may be provided, the flange 13 of which is located between the pipe end and a limb shoulder 4.
Patent GB-344620-A (GB)
Title: Improvements in short wave electromagnetic wave transmission arrangements
IPC: H03B11/06
Filed: 1930-02-05
Abstract: 344,620. Generating high-frequency oscillations. ARMSTRONG, J. J. V., 12, Church Street, Liverpool.-(Telefunken Ges. f³r Drahtlose Telegraphie ; 12, Hallesches Ufer, and Ludenia, W. ; 50, Babelsbergerstrasse, Wilmersdorf, both in Berlin.) Feb. 5, 1930, No. 3862. [Class 40 (v).] A dipole radiator a<1>, a<2> is arranged along the focal line of a reflector p and excited to produce radiation of very short wavelength by being connected to a low-potential D.C. source b through chokes d<1>, d<2> and resistance w, the two radiators being short-circuited periodically by a rotary or other interrupter h. Signalling is effected by a key c or a microphone in the supply circuit.
Patent GB-556554-A (GB)
Title: Improvements in or relating to ball and socket joints
IPC: F16C11/06
Filed: 1942-03-25
Abstract: 556,554. Ball and socket joints; linkwork. TAMPIER, R. J. C. March 25, 1942, No. 3952. [Class 65 (ii)] [Also in Group XXIV] In a ball and socket joint of the kind in which the inner wall of the socket adjacent the inlet edge is cut away at 34, 35 to permit the insertion and removal of a ball with flattened sides by angular adjustment of the ball, either the socket or the ball forms part of a lever 23 pivoted on a shaft 26, and the joint is assembled in the rocking plane of the lever. The socket may carry an arm 33 for connecting the joint to a transmission linkage 41, the arm carrying a spring plunger 37, by means of which it is fixed in a socket 42 in the linkage. The ball may be rotatably mounted in the lever 23 and may be fixed therein, when the joint is made, by a screw passing through the wall of 26 and held in position by a spring ring.
Patent GB-599260-A (GB)
Title: An instrument for aiding navigation
IPC: G01C21/20
Filed: 1945-02-16
Abstract: 599,260. Calculating-apparatus. THOMS, P. P. Feb. 16, 1945, No. 3956. [Class 106 (i)] An instrument for aiding navigation comprises an elongated main part of tapered formation having a scale provided at the wide end with which a pointer on a secondary arm of the instrument co-operates, both parts having elongated slots therein, a complementary elongated part also having an elongated slot and two connecting elements sliciable in these slots. The main elongated part 1 of tapered formation has a distance scale marked along its slot 10 and the secondary elongated arm 2 pivotally connected to the main part at 4 has a speed scale 21 marked along its elongated slot 20. One end of the secondary part carries a pointer 22 which traverses a scale 12 op the wide end of the main part 1. A third elongated part 3 has a scale of speed 31 along its slot 30. An element 5 is slidable in slots 10 and 30 while a second element 6 about which the part 3 may pivot is arranged to be slidable in the slot 20. A compass rose 7 may be rotated as desired about the elements 5, 6. The rose and three parts are preferably made of transparent material.
Patent GB-1124089-A (GB)
Title: Improvements in or relating to stalk harvesting apparatus
IPC: A01D43/08
Filed: 1966-01-28
Abstract: 1,124,089. Harvesting machines. DEERE & CO. 28 Jan., 1966 [28 Jan., 1965], Ni 4021/66. Heading A1F. A maize harvester comprises a cutter blade 74 driven by a pitman 78 and conveyers 60 for moving the cut stalks to feed rollers 30 and is characterized in that the conveyers have flexible bands fixed at spaced points 64 to form loops 66. As the connections of the bands pass around the driving sprockets 48 of the conveyers the loops are straightened out to lie closely adjacent the conveyers and it is stated that this facilitates the entry of the stalks between the conveyers and the discharge therefrom. The bottoms of the stalks slide along a trough 84.
Patent GB-668550-A (GB)
Title: Improvements relating to the treatment of cement raw slurry and the like
IPC: C04B7/42
Filed: 1949-02-14
Abstract: 668,550. Cement slurries. EVERY, C. E. (Smidth & Co., Aktieselskab F. L.). Jan. 10, 1950 [Feb. 14, 1949], No. 4022/49. Class 22 The water content of a raw cement slurry is reduced by adding thereto one or more alkali metal phosphates. In addition, one or more of the carbonates and hydroxides of the alkali or alkaline earth metals may be included; also sulphite lye or sodium silicate individually or in combination. Specific additions are sodium and potassium meta phosphates, sodium dihydrogen phosphate, disodium hydrogen phosphate, trisodium phosphate, sodium hexametaphosphate, sodium pyrophosphate, sodium carbonate, and calcium and sodium hydroxide. The total amount added is 0.2 per cent by weight. Lime slurries may also be similarly treated. According to the Provisional Specification the phosphate need not be present.
Patent GB-727524-A (GB)
Title: Improvements in or relating to a curl clip
IPC: A45D8/20
Filed: 1953-02-13
Abstract: 727,524. Clips. LEON CO., Inc., I. Feb. 13, 1953 [Aug. 15, 1952], No. 4094/53. Class 44. [Also in Group XIV] A hair curl clip comprises upper and lower members each made from a single piece of metal and rockably engaging each other, each member having an intermediate fulcrum portion from which a jaw extends forward and a handle backwards, the handle of the upper jaw being formed with an aperture through which a spring tongue integral with the lower jaw passes to press the jaws together. As shown, the lower jaw 11 has spaced slotted fingers 14, a flat intermediate portion 13 and a handle 16 the handle and flat portion being die cut to provide a spring tongue 17 and upwardly extending lugs 21. The upper jaw 12 has spaced slotted fingers 26 which overlie the fingers 14 and may be joined by a cross brace 27 a curved intermediate portion 28, and a handle 29 formed with an aperture 30 receiving the lugs 28 through which the tongue 17 projects. The tip 17a of the tongue presses the jaws together and allows a rocking movement to open the jaws when the handles are pressed together the lugs 28 preventing sideways movement of the jaws. In a modification single fingers forming the jaws are transversely corrugated. Specification 631,412 is referred to.
Patent GB-1388262-A (GB)
Title: Photoconductive polyether compositiion
IPC: C08G65/333
Filed: 1973-01-26
Abstract: 1388262 Photoconductive polyethers MITSUBISHI CHEMICAL INDUSTRIES Ltd 26 Jan 1973 [1 Feb 1972] 4181/73 Headings C3R and C3P [Also in Division G2] Novel photoconductive polyethers having repeating units selected from the structures wherein R 1 , R 2 , R 3 , R 5  and R 6  each denote H, C 1-4  alkyl, or aryl, R 4  denotes C 1-6  alkylene, X denotes a halogen atom or a group comprising a pyrrole ring, and Y denotes a group comprising a pyrrole ring, are prepared by reacting corresponding halogen substituted polyethers with a compound comprising a pyrrole ring and which is capable of replacing at least some of the halogen atoms of the polyether. The group comprising a pyrrole ring may be a pyrrolyl, indolyl or carbazolyl group optionally substituted with an inert substituent, e.g. halogen, nitro, cyano, C 1-4  alkyl, aryl, alkoxy or aryloxy. Exemplified halogen substituted polyethers include polyepichlorohydrin, epichlorohydrin/ ethylene oxide copolymer, poly-3,3-dichloromethyloxetane and poly-(2-chloroethylvinylether). Uses.-The compounds may be dissolved in solvents, e.g. tetrahydrofuran and dichloroethane, optionally mixed with sensitizers, e.g. 2,4,7-trinitrofluorenone, anthraquinone and 1- chloro-5-nitro-9,10-anthraquinone, and the resulting photoconductive compositions coated on to metal plates, paper or polyester film to provide photosensitive layers for use in electrophotography.
Patent GB-104561-A (GB)
Title: Improvements in and relating to Methods of and Apparatus for Shaping Wire.
IPC: H01K3/02
Filed: 1916-03-21
Abstract: 104,561. British Thomson-Houston Co., (General Electric Co). March 21, 1916. Filaments, straight or coiled, are given permanent bends so that they can be draped on the lamp supports without using heat by pressing them against a resilient bed by a series of rigid members. The rigid members 14 are carried by plates 10 or rollers 19 and co-operate with slits 16 in the rubber 12.
Patent GB-1247031-A (GB)
Title: Seed drills
Inventor: KORONKA PAUL
IPC: A01C5/06
Filed: 1968-01-26
Abstract: 1,247,031. Slot closers. IMPERIAL CHEMICAL INDUSTRIES Ltd. 31 Dec. 1968 [26 Jan., 1968], No. 4187/68. Heading A1D. A seed drill has a slot opener 14, a seed foot located between angled coulters 15 and a slot closer comprising a rotatable disc 24 which is radially corrugated with each corrugation lying on a line from the rim to the centre of the disc. A stop 25 controls the angular movement of rods 22 such that disc 24 is clear of the ground when the slot opener 14 is lifted clear of the ground. Ram 17, bell crank lever 18 and spring loaded rods 16 control positioning of bars 13. The distance between corresponding points on successive corrugations at the rim of the disc is from one to five times the width or amplitude of the corrugations.
Patent GB-1268603-A (GB)
Title: A device for cutting filaments or yarns
IPC: D01G1/04
Filed: 1970-01-29
Abstract: 1,268,603. Cutting filaments. GLANZSTOFF A.G. 29 Jan., 1970 [29 Jan., 1969], No. 4284/70. Heading B4B. A device for cutting material i.e. filaments or yarns into staple fibres comprises means 2, 4 for displacing a bobbin 7 on which the material is wound and a plurality of spaced rotatable blades 8 between which the bobbin is fed in order to effect the cutting of the material. The blades are fixed on shafts 9 rotatably mounted on slides which can be adjusted radially of the bobbin within a housing 10. Cooling air is fed through nozzles 12, 13. A collecting vessel 14 which may be in the form of a trolley, is mounted below the housing 10.
Patent GB-626850-A (GB)
Title: Improvements in or relating to pressure-cooking vessels
IPC: A47J27/09
Filed: 1946-02-12
Abstract: 626,850. Cooking apparatus. GROSSENBACHER, E. Feb. 12, 1946, No. 4313. Convention date, Nov. 10, 1945. [Class 28(i)] [Also in Groups XVIII and XXIX] A pressure cooker 1 with a flexible lid 2. the edge 3 of which engages the cooke rim 4, is provided on the lid with a steam outlet 6 to which is detachably secured a steam discharge pipe 23 in the place of the pressure-control valve shown on Fig. 8. The pipe 23 is attached to a connecting piece 27 to which is screwed an atomizer 39-40 (see Group XXIX). The steam supply to the atomizer is controlled by a cock 34. A flexible pipe 30 from the connecting piece is provided with a nozzle 31 and is supported by a prop 42. A shank 11 is provided on the steam outlet 6 and is secured to the cooker by a support 13 which terminates in a handle 12. The support 13 is engaged by the end 43 of the prop, and is anchored to the cooker handle 15 by a hook 16. The atomizer is detachable and may be replaced by a screw cap 44 which closes the outlet 38 from the connecting piece 27, thus allowing steam to issue instead of atomized vapour. The whole steam discharge pipe and accessories can be removed and replaced by the pressure-control valve which has a weight 54 to fit loosely over a crown 22 on the steam outlet and a pointed body 52 which is seated in the outlet pipe 21 (see Group XXIX). The flexible tube 30 can be replaced by an inhaling hood which is adjustable, Fig. 9 (not shown).
Patent GB-609832-A (GB)
Title: Improvements in or relating to combustion chambers for internal combustion engines
IPC: F02B19/04
Filed: 1946-02-12
Abstract: 609,832. Combustion chambers. SCHWEIZERISCHE LOKOMOTIV - UND MASCHINENFABRIK. Feb. 12, 1946, No. 4374. Convention date, Feb. 21, 1945. [Class 7 (iii)] A valve-controlled internal combustion engine, in which, shortly before the end of the compression stroke, a displacer part of the piston forces compressed air into the combustion chamber in such a manner as to produce one or more whirls having an axis parallel to that of the cylinder, is characterised in that a recess 10 in the surface of the piston having the shape of a circular segment serves as displacer part while the remaining greater portion of the piston top which is separated from the part 10 by a partition bar 12 is shaped as a pocket 5 for the valves 1, the air entering the combustion chamber through openings 15 in the bar and being guided to produce whirling at least in part by the cylindrical walls 20 of the pocket 5. The injector 7 may be positioned as shown to inject fuel in the same direction as the inrushing air, or it may be on the opposite side of the pocket to inject against the air. The bar 12 may be integral with the cylinderhead instead of the piston.
Patent GB-1256344-A (GB)
Title: Photographic manufacture of printed circuits
Inventor: LICARI JAMES JOHN
IPC: H01L21/00
Filed: 1970-01-29
Abstract: 1,256,344. Printed circuits; resistors. NORTH AMERICAN ROCKWELL CORP. 29 Jan., 1970 [23 May, 1969], No. 4395/70. Headings H1R and H1S. A method of making an electrical circuit photographically comprises applying a composition of a photosensitive material, heat fusable material and electrically conductive material to a substrate 108 and exposing it to radiation through a mask which determines the circuit pattern, the exposed composition being developed to remove it and the unexposed composition then fired to remove at least some of the photosensitive material from the remaining circuit pattern and to fuse the fusable material with the metallic material to the substrate. Tables of suitable materials and combinations of materials are disclosed for particular uses, e.g. a resistor may be formed of a composition comprising a metallic material of palladious oxide and silver, or photosenstive material of a photopolymer such as polyisoprene plus a photosensitizer and a fusable material of a lead borosilicate glass, other materials also being disclosed for conductive paths etc. The composition may be dried prior to exposure to radiation. The produced circuit pattern may have electrically conductive material applied to it by such as electroplating or dip soldering means or may have semi-conductive material applied so as to cover at least part of the pattern. Various parts of the pattern may be electrically interconnected by wires or electronic components 125, 126, and 124. A further layer of the composition without the metallic material may be applied to such a circuit, suitably exposed and fired to form an insulating layer 127 which at least partially covers the previous pattern, possibly a further pattern 128 being similarly produced on this layer and may be electrically interconnected to the other pattern by such as a wire 130 through an aperture 131, a further insulating layer 132, not necessarily photosensitive then being applied.
Patent GB-469482-A (GB)
Title: Improvements in devices for lifting balls
IPC: A63B47/02
Filed: 1936-02-13
Abstract: 469,482. Picking up tennis &c. balls; handle fixings. MASON, P. G., and NEWMAN & GUARDIA, Ltd. Feb. 13, 1936, No. 4403. [Classes 61 (i) and 61 (ii)] A device for retrieving table tennis, golf, &c. balls comprises a frame with rectangular polygonal, or circular ends such as 1, 2, between which are stretched elastic cords &c. 10 between any pair of which a ball may be picked up so as to be retained in the frame. The latter is mounted on a handle 4 by engaging a notch 6 on a tongue 5 on the middle of the frame 3 with a pin 8 across a slot 7 in the handle and then locking the tongue in the slot by sliding down a split sleeve 9.
Patent GB-123757-A (GB)
Title: Method of Making Stud Fastener Members.
IPC: B21D53/48
Filed: 1919-02-21
Abstract: 123,757. Autoyre Co., (Assignees of Lewis, A. J.). Feb. 19, 1918, [Convention date]. Press-button fasteners.-The stud of a pressbutton fastener is made from sheet metal in the manner shown by suitable dies and punches. The plate is first cupped as shown at 11, Fig. 1. The metal of the base is then pressed outwards to form one half of the rim 13, and the sheet is pressed inwards at 14, Fig. 2, to form the other half of the rim. The thread holes 16, Fig. 3, are then punched and subsequently the fastener is detached from the sheet, Fig. 4, and the stud is necked at 17, Fig. 5. The thread holes 16, Fig. 6, are widest at the rim, to avoid edges which might cut the thread. The operations may be performed in a slightly different order.
Patent GB-130681-A (GB)
Title: Improvements in Connection with the Starting of Internal Combustion Engines.
Inventor: ROYER HENRI
IPC: F02N99/00
Filed: 1918-03-13
Abstract: 130,681. Royer, H. Jan. 16, 1917, [Convention date]. Starting.-In order to avoid the failure of ignition in the engines of torpedoes that have b e e n started by compressed air, in consequence of the cooling of the cylinders by the expansion of the air, the cold expanded air is swept out of the evlinder by a charge of highpressure air at normal temperature which does no work in expanding, and the supply of scavenging-air ceases as soon as the engine begins to work by internal combustion. The scavenging-air is admitted to the cylinder D through a narrow port B after the exhaust port C' has been uncovered. The air is supplied to a chamber C, common to all the cylinders, past a valve S and a valve P to reduce its pressure. The valve S is allowed to close after the engine has made some revolutions by the unscrewing of a nut E on the shaft d and the consequent fall of the lever L.
Patent GB-969363-A (GB)
Title: Window balancing mechanism
Inventor: CUNNINGHAM DOUGLAS JAMES
IPC: E05F1/16
Filed: 1962-02-06
Abstract: 969,363. Pantograph linkages. WILMOT BREEDEN Ltd. Jan. 8, 1963 [Feb. 6, 1962], No. 4466/62. Heading F2K. [Also in Division E1] A sliding window 12 is balanced by a torsion spring 18 acting between a link 10, pivoted to the window, and a pin 19 mounted non-rotatably between the branches of a forked link 16. A parallel link 17 and a lower link 13 complete the mechanism, which increases the resisting couple produced by the spring to counteract the increased moment produced by the window as it is lowered. The spring strength can be adjusted by a screw 21 acting against a hook in the end of the spring.
Patent GB-223479-A (GB)
Title: Improvements relating to the valves of internal combustion engines
IPC: F01M9/10
Filed: 1924-02-21
Abstract: 223,479. Cantrell, G. Feb. 21, 1924. Capillary-action lubricators. - A lubricating and leakage-preventing pad d of felt &c. is held in position upon the valve stem f by a member a formed from the blank shown in Fig. 4 by bending the arms c up at right angles and cutting them to such lengths that their ends when bent outwards will engage the valve spring e as shown in Fig. 1. By screwing the member a along the spring, the position of the pad may be adjusted.
Patent GB-608004-A (GB)
Title: Improvements in a device for easels
IPC: A47B97/08
Filed: 1946-02-13
Abstract: 608,004. Easels. NILSSON, N. A. Feb. 13, 1946, No. 4559. [Class 52(iii)] An easel comprising a standard slidably supported by three legs and adapted to be locked in desired position and hooks displaceably mounted on two of the legs, has the upper portion of the standard provided with two arms for holding a picture &c. placed on the hook members, the arms being adapted to be swung obliquely outwards. The two front legs 2 are mounted. by bolts 6, in a sleeve 5 through the centre portion of which is slidably fixed a standard 10 by means of a bolt 13 passing through a slot 11 in the standard and displaceably mounted on these legs are hooks 17 to support a picture. The rear leg 2 is pivoted in cheeks 15 by means of a bolt 16. The upper portion of the standard is bevelled to which bevelled portion two arms 19 are pivoted so that they can be swung outwardly and obliquely and clamped down on the upper portion of the picture 18, recesses and saw teeth 21, 22 being provided for this purpose.