baber/WOPTO huggingface dataset:
Patent GB-1519831-A (GB)
Title: Symmetrical circuit arrangement for forming a variable ac resistance
IPC: H01L27/04
Filed: 1975-06-13
Abstract: 1519831 Semiconductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 13 June 1975 [17 June 1974] 25370/75 Heading H1K [Also in Divisions H3 and H4] A symmetrical circuit providing a variable A.C. resistance between terminals 7, 8, Fig. 2, comprises an elongated PN junction 26 separating regions 23, 25, a current source 20 connected to 25 substantially midway between 7 and 8, and a controllable current sink 30 connected to region 23, whereby as the sink current Ir is increased, increasing portions of junction 26 are turned on from the middle outwardly so that a central portion of region 25 is shunted by part of region 23. Region 23 may have its effective resistance reduced by (a) a further region 27, Fig. 3a, to be used as a collector, (b) shunting by a conducting layer, (c) a low resistance buried layer 23<SP>1</SP>, or (d) geometry providing a long path from 7 to 8 via region 25 and a short path via region 23, Figs. 4a, 4b (not shown). A P-type semiconductor substrate has a diffused N<SP>+</SP> layer 23<SP>1</SP>, covered by an N epitaxial layer 23. Two surface P regions 25, 27 are then formed in 23, to produce a lateral PNP transistor. Shaded areas 32-38 indicate contact openings in an insulating layer; conductive layers 7, 8, 9, 31, 39, Fig. 3b, provide terminals.
Patent GB-406758-A (GB)
Title: Apparatus for the deeper setting of growing plants
IPC: A01C11/04
Filed: 1932-09-12
Abstract: 406,758. Implements for working land and lowering growing plants. DENSTADT, H., 22, Siegmundshof, Berlin, DENSTADT, F., 32, Neustrelitzer Strasse, Brandenburg, and STRANZ, F. SCHRODER-, 10, Flemmingstrasse, Steglitz, Berlin, both in Germany. Sept. 12, 1932, No. 25380. [Class 6 (i).] Apparatus for setting growing plants deeper in the soil comprises a transportable frame carrying elements arranged to burrow under plants planted in rows, and pressing elements, such as rollers, arranged one directly behind each of the burrowing elements, so as to press the plants into the loosened soil and thus produce furrows in which the plants are situated with ridges at the sides, which ridges are levelled later on by means of a harrow or the like, so as partly to cover the plants. The burrowing elements may consist of subsoilers carried by vertically adjustable cross-bars 7 and each comprising a vertical plate 5 and a share 6. Behind the shares 6 are rollers 12 mounted on a vertically adjustable shaft 11. The frame is provided with a seat 13 and is mounted on rear wheels 1 and a front steering wheel 3. The wheels, rollers, and subsoilers may be adjustable individually. A burrowing element may also consist of a rod 15, Fig. 3, gradually increasing in size to form a combined cone and cylinder 16. The rod 15 is connected to an inclined and pointed share 17 carrying inclined rods 21, 22 and supported by a bow 23. The lower side parts of the bow 23 may form rearwardly inclined coulters. In a modification a burrower is universally jointed to an inclined share adjustably fixed on a rearwardly inclined arm. In another two burrowers are adjustably and flexibly connected to two reversely inclined shares connected to a central inclined arm. Several shares and burrowers may be arranged superposed on one vertical coulter. A central longitudinal notch increasing in depth towards the rear may be cut in the top of the element 16. In another form the part 16 is slotted vertically. Fig. 13 shows a slotted element having inclined side faces and carried by a share 34 on a curved coulter 36. In the form shown in Fig. 16 two diverging plates 40 are fixed underneath a share 34. They may extend rearwardly beyond the share 34 and may be inclined. One side face of the divided burrowers may be omitted.
Patent GB-669144-A (GB)
Title: A new or improved lock for cycles
Inventor: BEARDSHAW GERALD
IPC: B62H5/06
Filed: 1949-10-05
Abstract: 669,144. Cycle locks. HERCULES CYCLE & MOTOR CO., LTD. Oct. 30, 1950 [Oct. 5, 1949], No. 25578/49. Class 79 (iii). A lock for the steering head of a cycle comprises a barrel lock mounted in a transverse cylindrical housing integral with one of the head lugs and having its axis at right angles to that of the head and a disc or plate coupled to the inner end of the barrel angularly movable therewith and which carries a radially projecting locking tongue adapted in the locking position to engage in a slot in the wall of the steering tube. As shown in Figs. 1 and 2, the barrel lock k is mounted in a cylindrical bush h the contour of which intersects the steering tube e, the bush being recessed to accommodate the steering tube. The locking tumblers of the barrel lock are received in longitudinal grooves in the bush spaced 90 degrees angularly so that the plate m and its projecting tongue may be retained in the locking position, in which the tongue enters a slot in the steering tube e, or in the unlocking position. The bush is retained in the housing by a screw t engaging in a disc r inside the bush and adapted to draw a shoulder at the other end of the bush against the other end of the housing. The screw is covered by a cap u. A slot is provided in the steering tube in position to lock the front wheel in line with the frame, and further slots to lock the front wheel to either side may also be provided.
Patent GB-722959-A (GB)
Title: Improvements in alloy plate grids for lead acid electric accumulators
Inventor: ZACHLIN ANTHONY CASIMERE
IPC: H01M4/68
Filed: 1952-10-14
Abstract: A cast Faure type battery plate grid is formed of an alloy of Sb 2.5-13.0 per cent, As in excess of 0.15 per cent but not over 2.13 per cent, Sn 0.25-0.5 per cent and the balance Pb and impurities.  Cu up to 0.1 per cent may also be present. Specification 722,958 is referred to.
Patent GB-169711-A (GB)
Title: Improvements in or relating to electro-magnetic relays
IPC: H01H51/30
Filed: 1921-09-28
Abstract: 169,711. Automatic Telephone Manufacturing Co., Ltd., (Assignees of Erickcon, J.). Oct. 1, 1920, [Convention date]. Alternating - current relays are provided with a light frictional brake device to prevent chattering. The relay shown in Figs. 1 and 2 has a stationary core 2, pole-pieces 4, 5, and an armature 9 attracted into an air gap between the pole-pieces. At the same time as the armature 9 is attracted, a light thin armature 6 covered at the end with a wrapping of sheet brass is attracted against the edge of the armature 9, and gives the required frictional retardation, the brass sheath preventing the armatures from sticking together when the relay is de-energized.
Patent GB-280020-A (GB)
Title: Improvements for and relating to the cleansing of gulley traps and the like
IPC: E03F9/00
Filed: 1926-10-16
Abstract: 280,020. Wood, H. C. Oct. 16, 1926. Cleaning internally, non - rotary appliances for; fluid pressure processes for.-A domeshaped plunger or posser 1 for cleaning gulley traps is provided with a brush 2 or a mop and is fitted with a handle 3. The handle may be hollow and fitted with a coupling for attachment to a source of water supply, the water being led through the head of the plunger. The bristles of the brush may be secured to a ring or boss adapted to be detachably secured to the plunger.
Patent GB-600378-A (GB)
Title: Improvements in and relating to pit props
IPC: E21D15/28
Filed: 1945-10-04
Abstract: 600,378. Making pit props. SABES & CIE, J. Oct. 4, 1945, Nos. 25859 and 25860. Convention dates, Oct. 4, 1944, and July 23, 1945. [Class 83 (ii)] [Also in Group X] In making pit props, the face 4b of the channel section member 4a is planed to make a small angle with the face 4c, and to serve as abutment for the primary wedge 6a. The stock 1a also of channel section is made in two parts abutting and electrically welded along the centre line of the web. The pocket 5a for the wedges may be cast in one piece or may be in two parts welded in the mid plane transverse to the line of the locking key inserted at 11  to engage the secondary wedge 9a. The weld is thus largely relieved of tensile stress. The pocket is welded to the stock.
Patent GB-502870-A (GB)
Title: An improved non-rotary joint-pin-device for coacting with circularly-grooved bearing-ends of links
IPC: F16C11/04
Filed: 1937-09-24
Abstract: 502,870. Pivots. HUMPHRIS, F. Sept. 24, 1937, No. 25887. [Class 65 (ii)] A strut c, a pin a, and a plate e of a press are held together by two plates b fixed to the ends of the pin a. Each plate b has a straight flange b<2> entering a recess e<1> in the plate e and an arcuate flange b<1> cooperating with a flange c<2> of the strut c. The pin a is also attached to the plate e by studs. The pin a may have a flat or a cradle d placed between it and the plate e, or both, to prevent its rotation. The plates b may be secured to the pin a either by bosses b<2> tightly secured in recesses, or bosses on the pin in recesses in the plates. An antifriction liner b<2> may be inserted between the flanges b<1> and c<2>.
Patent GB-1062517-A (GB)
Title: Ice-cream machine
IPC: A23G9/20
Filed: 1965-06-18
Abstract: A continuously operating machine for the production of ice cream comprises a charging chamber, a hermetically sealed freezing chamber, and a mixing means in the form of an electrically driven gear pump which introduces a mixture of liquid to be frozen, drawn from the pre-cooled liquid in the charging chamber, and air emulsified therewith into the freezing chamber under pressure.  A pressure operated switch is inserted in the pump motor circuit, being operated by variations in pressure in the freezing chamber, gear pump, and joining conduits, such that the motor is started when frozen material is withdrawn from the freezing chamber, and stopped when the freezing chamber is again full.
Patent GB-898125-A (GB)
Title: Pallets for handling by lift devices
IPC: B65D19/38
Filed: 1960-07-28
Abstract: 898,125. Pallets for handling loads. WOODWARD, F. H. July 28, 1960, No. 26252/60. Class 78 (4). A wooden pallet has a metal band 7 (Fig. 3) extending through grooves 6, such as saw kerfs, in the deck boards 3 (Fig. 1) and passing around the end bearers 2. The strip is secured by the nails 4 securing the deck boards 3 and further nails may secure the strip between the deck boards. Each strip 7 may be in several parts or, as shown, a single strip may overlap at its ends 9 to be secured by a nail 10. The ends of the deck boards may take-into rebates in the upper and lower edges of the bearers 2.
Patent GB-715337-A (GB)
Title: Improvements relating to plaster of paris compositions
IPC: C04B28/14
Filed: 1952-01-30
Abstract: A composition suitable for a filling for holes in plaster walls consists of Plaster of Paris, mica dust 5 per cent. by volume, 1/300 part tannic acid, and water for suitable plasticity.
Patent GB-1165515-A (GB)
Title: Improved door frames.
Inventor: LEIVENZON ZVI
IPC: E06B3/988
Filed: 1968-05-31
Abstract: 1,165,515. Door -frames. Z. LEIVENZON and S. LEIVENZON. 31 May, 1968 [31 May, 1967; 13 June, 1967], No. 26290/68. Heading E1J. A door frame with simulated mitre joints and of the type in which the jambs sections and head section e.g. of steel has two spaced side members 24, 25 and 27, 28 respectively and a front face portion having a door stop 17, 18 respectively, has one end of one of the pair of interconnected ends of the jamb and head section provided with an inwardly offset portion 10 which provides angularly extending shoulders 34 on the side members 24, 25, the other end of the pair of interconnected ends having the side members 27, 28 provided with angularly abutting edges 16 complementary to the pair of shoulders 34 so as to interengage with these latter and means such as lugs 9, 10 and slots 9a, 10a, being provided to lock the two sections in the interengaged position. At the interengaging edges of the front faces either of the sections 17, or 18 is cut out to receive the other section 18 or 17, preferably on each jamb and the head section extends over and engages the upper edges of the jamb to provide a load supporting head. The offset portion 10 may be integral or consist of a plate member to the internal surface of the side portion 24. The jambs may be secured to the wall e.g. 39 Fig. 6 by wire clips 38 embedded at spaced intervals in the wall and the jambs 11 pushed towards the wall until the flanges 29, 31 move over the ends 41 and engage therebehind.
Patent GB-687098-A (GB)
Title: Improvements in automatic telephone systems
IPC: H04M15/08
Filed: 1951-11-09
Abstract: 687,098. Automatic exchange ystems. GENERAL ELECTRIC CO., Ltd., and ROUSSEAU, J. E. Nov. 9, 1951, No. 26330/51. Class 40 (iv). To identify a subscriber from whose line circuit, Fig. 1, a call has been extended through a selector, Fig. 2, to an operator's position, Fig. 3, where the operator plugs into a jack JA, the operator depresses a key (not shown) to apply a positive potential over the ring connection and thereby operate a relay MA which applies positive battery and a high-frequency A.C. signal to the P wire. A non-linear resistance NL in the calling subscriber's line circuit becomes conductive and passes the signal to an amplifier - receiver VA which is common to a group of lines and is tuned to receive the signalling frequency used, so that a relay D is energized to bring up a relay DA. Meanwhile a relay S has been energized to start a switch G stepping, and a relay MB has operated slowly to remove the positive battery from the P wire before it can operate the subscriber's meter M. Relay D releases and a relay DB operates in series with relay DA to mark in contact bank G1 the contact corresponding to the group containing the calling line. The switch G is stopped on this contact by the operation of a relay T, and a relay ST is energized over wiper G2 to complete a stepping circuit for a switch F. Relay T releases and the switch G steps on. The amplifier-receiver VA being now connected to wiper F1, relay D operates when the switch F reaches the calling line, which is still marked by the A.C. signal on the P wire. A relay DC is energized to stop the switch F and connect the P wire to a code circuit of known type which sends a code of voice-frequency impulses identifying the line to apparatus associated with the operator's cord circuit, relay ST being released at the end of the impulse train. The calling subscriber's number is displayed in known fashion to the operator who then releases her key to initiate release of the identification equipment. In a modification (not shown), the start circuit for the switch G is directly controlled by the operator who may thereby delay an identification cycle until she is ready to receive notification of the calling subscriber's number.
Patent GB-237157-A (GB)
Title: Improvements in dyeing processes
IPC: D06P1/00
Filed: 1925-01-19
Abstract: Animal fibres or tanned vegetable fibres are dyed by treatment with nitrous acid and metallic salts or oxides in the cold or at temperatures not exceeding 80 DEG  C.  The metallic compounds may be previously fixed to the fibre and in this case the nitrous acid may be applied as a vapour (generated by hydration of nitrosylsulphuric acid or by treatment of nitric acid with reducing agents such as starch or arsenious acid) so as to produce either dyed or printed effects.  In addition with vegetable fibres the tannins may be either fixed to the fibre or in the dyebath. Examples are given of the dyeing of wool or silk with sodium nitrite and copper sulphate with or without acetic or other acid to obtain pink to purple shades and of the dyeing of tanned cotton reddish-brown with sodium nitrite, zinc sulphate and sulphuric acid.  The following salts are also specified as suitable, molybdates, tungstates, ferricyanides, alums, corrosive sublimate and salts of uranium, vanadium, manganese, nickel, copper and cobalt, various yellows, reds and greens being produced.  In additon to wool, silk and tanned cotton, mixed silk or wool and cotton fabrics, leather, furs, and woods rich in tannins may be dyed.  The colours obtained may in the case of the cold process be used to top ice colours or diazotizable colours or in the case of the tanned vegetable fibres may be topped with basic dyes.ALSO:Nitrous acid is obtained in the form of a vapour by hydration of nitrosylsulphonic acid or by treatment of nitric acid with reducing agents such as starch or arsenious acid.
Patent GB-1501810-A (GB)
Title: Wire winding apparatus
IPC: B65H54/28
Filed: 1976-06-24
Abstract: 1501810 Wire winding apparatus HOESCH WERKE AG 24 June 1976 [23 July 1975] 26382/76 Heading D1J Wire 9 being wound on a flanged take-up reel 3 passes around a deflecting wheel 4 with a loop angle of 180, the deflecting wheel 4 having a diameter greater than the flange diameter of the take-up reel and being mounted for free rotation in a member 5 that is freely pivotable about an axis 8 concentric with the path of the wire 9 being fed to the reel 3. Counterbalance means 6, 7 may be provided. The apparatus is suitable for winding apparatus in which the wire is to be wound in side-by-side relationship on the reel 3. The wire 9 may be for use in a shielding gas welding process and may come from a wire straightening machine.
Patent GB-967377-A (GB)
Title: Method and means for stripping thermoplastic sheathing from cables,armoured hose and the like
Inventor: LITCHFIELD LEON GEORGE
IPC: H02G1/12
Filed: 1962-07-11
Abstract: 967,377. Cable stripping devices. L. B. (PLASTICS) Ltd. July 9, 1963 [July 11, 1962], No. 26588/62. Heading H2C. [Also in Division F2] A device for stripping thermoplastic insulation from an electric cable comprises a chamber in which the insulation is softened by heating and knife blades between which the cable is drawn after softening to strip the insulation. In Fig. 1, the cable is passed between knife blades 18, the upper one of which is spring biased towards the cable and is inserted to an extent limited by a stop 15, into the heating chamber 11 whose temperature may be adjusted by control 14. When the insulation has softened, the cable is pulled from the chamber and as it is withdrawn it engages the upper knife blade which pivots towards the lower pivotally fixed blade so that their semi-circular cutting edges bite into the insulation and strip it. The knife assembly is mounted on a slidable bracket 19 so that it moves near the chamber when the insulation is being heated and away from it during stripping to allow the stripped insulation to be deposited through a hole in the base-plate 10.
Patent GB-1458120-A (GB)
Title: Method of removing sulphate groups from organopolysiloxanes
IPC: C08G77/06
Filed: 1974-06-14
Abstract: 1458120 Organopolysiloxanes; polyurethane foams TH GOLDSCHMIDT AG 14 June 1974 [16 June 1973] 26595/74 Headings C3T C3R and C3S  Sulphate groups which are intra-molecularly and/or terminally attached to silicon atoms of an organopolysiloxane are removed by reacting the organopolysiloxane with a peralkylated amide of a carboxylic acid, a phosphonic acid and/or a phosphoric acid, and removing the peralkylated amide phase containing the -SO 3 -, and if desired, repeating the procedure at least once. Suitable amides are dimethyl formamide, dimethyl acetamide, hexamethyl phosphoric acid triamide, N,N<SP>1</SP>-tetramethylurea, diethyl formamide, N-dimethylethylphosphonic acid amide, N,N<SP>1</SP>-tetraethylurea and diethyl acetamide. Suitable starting compounds have the formula where n=2-20, m=1-10, R<SP>1</SP> is an optionally substituted C 1 -C 2  alkyl radical, optionally partially replaced by aromatic radicals or a radical of the formula or two R<SP>1</SP> radicals are intramolecularly or intermolecularly replaced by a radical of the formula other starting compounds have the formula where R<SP>2</SP> is a hydrocarbon radical optionally partially replaced by a radical of the formula -O[R 2 SiO-] n SO 3 H. In Examples 1 and 2 the sulphate groups of (1) a siloxanyl sulphate of average formula [(CH 3 ) 2 SiO-] 1À973 SO 3 , and (2) a sulphated methylpolysiloxane containing silicon-bonded chlorine atoms are removed by reaction with dimethyl formamide. The resultant methylpolysiloxane (2) containing Si-bonded chlorine atoms is reacted with a propylene oxide/ethylene oxide/butanol polyether and the resultant polysiloxanepolyether block copolymer is used as a foam stabilizer in the formation of a polyurethane foam from the following: an ethylene oxide/ propylene oxide/glycerol polyol, water, trichlorofluoromethane, tin octoate, dimethylethanolamine, N-ethyl morpholine, toluene diisocyanate and the siloxane-polyether copolymer. In Example 3 the sulphate groups of the methylpolysiloxane of Example 2 are removed by reaction with hexamethylphosphoric acid triamide or dimethyl acetamide.
Patent GB-1175684-A (GB)
Title: Improvements in Folding Wheel-Chairs
Inventor: PRITCHARD DENNIS HENRY
IPC: A61G5/08
Filed: 1966-06-15
Abstract: 1,175,684. Folding invalid carriages. VESSA Ltd. 14 June, 1967 [15 June, 1966], No. 26610/66. Heading B7B. The back 2 of a wheelchair is hinged at the level of the seat 1 to the uprights 3 so as to fold downwardly and rearwardly between the propelling wheels, the hinged arm-rests 5 having pivoted struts 6 releasably supported on the seat members 1. A bolt slidable in the tubular members of the back rest 2 engage the tubular member 3 to maintain the back in operative position.
Patent GB-278749-A (GB)
Title: Improvements in speed measuring apparatus
IPC: G01P3/48
Filed: 1927-10-07
Abstract: 278,749. Mombur, G. Oct. 7, 1926, [Convention date]. Impulse speed-indicators. - A speedometer of the balance wheel type receives its impulses from an armature electromagnetically oscillated at the frequency to be measured and in constant gear with the balance wheel, or itself forming the balance wheel. In the form shown in Fig. 1, the electromagnets 10 rock an armature 8 geared through a rack and pinion with a spring-controlled balance-wheel 1 arcuately slotted at 12 to engage the arm 14 rigid with the pointer. The balancewheel spindle has a toothed wheel to mesh with a pinion 15 carried by a lever 17 influenced by opposing slightly unequal springs and rocked at each energization by the bridge bar 20 gapped at 21 to attract the armature. 19 fast with the lever 17. The pinion is provided with a threearmed block 22 justified by a blade spring and is limited in rotation by engagement of one of its arms with a fixed pin 23 so as to restrict the movement given to the balance wheel at each impulse to a constant amount. To vary the duration of each impulse, the primary shaft may be provided with a contact drum having an insulating portion of increasing width on which bears an adjustable contact piece. The pointer may be damped by a pair of bars 26, 27, Fig. 3, magnetized at each impulse and engaging a disc 28 fast on the pointer spindle.
Patent GB-312013-A (GB)
Title: Improvements in spring wheels or tyres
IPC: B60B9/06
Filed: 1928-09-18
Abstract: 312,013. Lamont, B. N. R. Sept. 18, 1928. Spring wheels with continuous outer rigid ring and helical springs.-Spring wheels of the kind described in Specification 273,596 comprising sets of radial helical springs disposed between continuous hub and outer rings and an intermediate floating ring, have pads with recesses h to receive the ends of the springs E, F, the pads being hollow to receive studs G projecting from the supporting rings. The pads have also rear slots N for engagement by the jaws K of pincers M which are used for insertion and removal of the pads and springs. The springs are of broad and relatively thin sectioned metal to increase their resistance laterally and the floating ring is provided with recesses b intermediate the studs to render it light.