baber/WOPTO huggingface dataset:
Patent GB-1213258-A (GB)
Title: Air return grill for refrigerated display cases
IPC: A47F3/04
Filed: 1969-10-20
Abstract: 1,213,258. Refrigerators. STREATER INDUSTRIES Inc. 20 Oct., 1969 [25 Nov., 1968], No. 51443/69. Heading F4H. In a refrigerated display cabinet an air curtain is directed transversely across and generally parallel to the top of a food bin from an air supply flue 26 formed between the bin wall 21 and outer wall 11 of the cabinet to an air return flue 27 formed between the bin wall 20 and outer wall 10 of the cabinet and the entrance to the return flue has a removable grille 41 of louvred construction. The grills louvres 50 are of shallow, inverted V-shape both to direct the air flow downwardly into the return duct and to prevent access of moisture thereinto.
Patent GB-1206260-A (GB)
Title: Wave length selective light screens
Inventor: PEDRICK ARTHUR PAUL
IPC: G02B5/00
Filed: 1969-10-23
Abstract: 1,206,260. 260. Optical filters. A. P. PEDRICK Oct.23, 1969, No.51886/69. Heading G2J. A wavelength selective light screen permitting the passage of blue-violet light, but preventing the passage of red light, comprises a thin sheet having perforations whose bore is 5À50 x 10<SP>-5</SP> cms., this sheet being sandwiched between strengthening sheets transparent to all wavelengths.
Patent GB-1310598-A (GB)
Title: Powered loader vehicle
IPC: E02F3/342
Filed: 1970-06-30
Abstract: 1310598 Endless-track vehicles CATERPILLAR TRACTOR CO 30 June 1970 [14 Aug 1969] 52074/72 Divided out of 1310597 Heading B7H [Also in Division E1] The subject matter of this Specification is identical with that described in Specification 1,310,597, but the claims are concerned with a different aspect of the loader construction including the apparatus for transmitting power from the engine to the drive sprockets of the endless track assemblies.
Patent GB-1275166-A (GB)
Title: Process for the preparation of4-aminomethylcyclohexane-1-carboxylic acid
Filed: 1970-11-03
Abstract: 1275166 Trans - 4 - aminomethylcyclohexane- 1-carboxylic acid NIPPON SHINYAKU CO Ltd 3 Nov 1970 [29 Nov 1969 (4)] 52254/70 Heading C2C A process for the manufacture of 4-aminomethylcyclohexane-1-carboxylic acid abundant in its trans-isomer comprises the following steps: 4 -oxocyclohexane- 1,1 -dicarboxylic acid or an ester thereof is reacted with a cyanhydrin or with an alkali metal cyanide; the resulting 4 - cyano - 4 - hydroxycyclohexane - 1,1 - dicarboxylic acid or an ester thereof is dehydrated and, optionally, hydrolysed and/or alkylated; the resulting 4-cyanocyclohexene-1,1-dicarboxylic acid or an ester thereof is reduced and, optionally, hydrolysed; and the resulting 4-aminomethylcyclohexane-1,1-dicarboxylic acid is decarboxylated to afford 4-aminomethyleyclohexane- 1 - carboxylic acid abundant in its trans-isomer.
Patent GB-524271-A (GB)
Abstract: 524,271. Calculating-apparatus. PATMORE, F. J. Jan. 25, 1939, No. 2578. [Class 106 (i)] A machine for effecting multiplication in non-uniform notations comprises a series of setting elements, one for each denomination with ribs of different lengths representative of the product of one factor by successive powers of ten, a plurality of sets of computing units to which the representative values are communicated, and a totalizer counting mechanism engageable with each of the computing units to accumulate the various set values. In the form shown for sterling notation the setting elements are constituted by multi-ribbed bars 1, Figs. 1 and 2, arranged in a bank and selected for movement by a plate 12 by aid of a setting knob 11 slidable in a graduated slot 13. The bar representing four pence is shown in Fig. 3, with ribs a, band c having teeth a<SP>1</SP>, b<SP>1</SP>, b<SP>2</SP>, and cl, c<SP>2</SP>, c<SP>3</SP> representing one times, 10 times and 100 times four pence. The bar for seven shillings is shown in Fig. 4, and has teeth A<SP>1</SP>, B<SP>1</SP>, B<SP>2</SP> and C<SP>1</SP>, C<SP>2</SP> representing one, 10 times and 100 times seven shillings. The slidable plate 12 is mounted in a horizontally movable frame 15 operated by a lever 14 which projects the selected pence bar 1 to displace a member 2 having rack teeth 2a meshing with a one-way drive pinion 4 to project the appropriate number of teeth of a cam disc and pin wheel type of computing unit 5. After the lever 14 and parts have returned to normal position the knob 11 is set to select the appropriate shillings bar 1 and the lever 14 is again operated to communicate the setting to the computing units. When the setting is completed a totalizing counter 7 is shifted to align with the intermediate pinions 9 of the computing units in succession and the shaft 6 is rotated in each position a number of times, according to the values of the other factor, and the amounts set are transmitted progressively to the counter. The progressive action is obtained by arranging the pins of the computing- units in staggered relationship.
Patent GB-1089402-A (GB)
Title: Control system for telephone signalling transmission
IPC: H04Q3/545
Filed: 1964-12-24
Abstract: 1,089,402. Automatic exchange systems. P. LUCAS, J. DUQUESNE, J. NUTTAL and J-P. BERGER. Dec. 24, 1964 [Dec. 24, 1963] No. 52432/64. Heading H4K. A group of impulse sending circuits is controlled from the central processor of an exchange, the sending over an outgoing trunk circuit of a seize pulse, a release pulse, or of each one of the digits of a wanted connection, being produced in response to a corresponding code from the processor which code is registered in the sender to determine the appropriate sequence of sender operation. The processor selects a wanted sender out of a group of 20 by way of an address register set up in 3-out-of-6 code, a decoder providing a 1-out-of-20 mark to connect the selected sender to an order store. A test is made on the 1 -out-of-20 mark to ensure that one and only one mark exists. If the sender is marked idle to the processor and is free from fault, the connection between sender and order store is made. If the connection test is successful, the processor waits for a busy signal which is returned to the processor to confirm receipt of the order code, and on detection of the busy signal releases the processor from the connection. If the address code, the sender, the connection or the transfer of data is at fault, the processor signals its central control which, by means not disclosed, analyses the situation before effecting a forced release. The codes employed in the order store of the central processor are 3-out-of-6 for digits that are to be sent and 6 digit binary for seizure and release pulses and for the forced release sequence. Each code is set up in the sender and governs the sequence in relation to the stepping of a four-stage relay binary counter. The first three steps out of the sixteen steps of the counter are devoted to testing and preparatory circuit changes. Digits are only sent if the order code checks as a proper 3-out-of-6 failing which the processor is signalled to initiate a forced release sequence. If the code checks, an impulse is sent on the fourth step and on as many succeeding steps as the code demands. To isolate the outgoing trunk circuit so that audio frequency signals do not interfere with ringing circuits a guard signal is supplied by the sender for the duration of and overlapping the impulse train. Such a guard signal also accompanies the seizure and release signals which are of 100 and 600 ms. respectively.
Patent GB-1151662-A (GB)
Title: Improvements in FM Multiplex Systems
IPC: H04H20/88
Filed: 1967-11-20
Abstract: 1,151,662. Radio signalling; pick-ups. GENERAL ELECTRIC CO. 20 Nov., 1967 [22 Dec., 1966], No. 52636/67. Headings H4J and H4L. To enable stereophonic gramophone records to be reproduced via a stereophonic F.M. radio receiver, the pick-up element is arranged to produce L + R and L - R signals from which a normal stereophonic radio signal is generated by conventional means. Pick-up element.-A piezo-resistive element 20 is cantilever-mounted and its free end displaced by forces F 1 , F 2  from a stylus. Two parallel, longitudinal strips 21, 22, which comprise low resistivity portions of the crystal, are connected at one end by an element 25. The resistances of the strips normally are equal but change when undergoing strain. The force F 1  corresponding to the L signals affects both strips equally, but the force F 2  (the R signal) effects the strips oppositely.
Patent GB-1533668-A (GB)
Title: Crosslinkable bis-imidyl derivatives
IPC: C08F20/00
Filed: 1976-12-17
Abstract: 1533668 Unsaturated imide polymers CIBA GEIGY AG 17 Dec 1976 [19 Dec 1975] 52829/76 Heading C3R [Also in Division C2] Compounds of the formula where X is H or, if the radical  is in the 4-position of the benzene ring, also COR 2 , R, R 1  and R 2  are OH, unsubstituted or substituted phenoxy, C 1 -C 18  alkoxy or O<SP>-</SP>M<SP>+</SP> where M<SP>+</SP> is an alkali metal cation, a trialkyl ammonium cation having 3-24 carbon atoms or a quaternary ammonium cation or two adjacent R 1  symbols together represent the -O- grouping, A is R 3  and R 4  are H, Cl, Br or CH 3 , Q is NH and Y is a bivalent organic radical having at least two carbon atoms or Q-Y-Q is the grouping wherein R 5  and R 6  are H, CH 3  or phenyl and imidized derivatives thereof may be crosslinked. The crosslinking may be carried out thermally, chemically or under the influence of electromagnetic waves. The organic radical represented by Y may be a polyamide radical. The compounds may be prepared by reacting one or two compounds of the formula where R<SP>1</SP> is OH, unsubstituted or substituted phenoxy or C 1 -C 18  alkoxy or the two R<SP>1</SP>s represent the -O- grouping, with one or more compounds of the formula HQ-Y-QH and optionally imidizing the compound of Formula Ia or Ib produced or converting it into another derivative of Formula Ia or Ib.
Patent GB-1390775-A (GB)
Title: Ohmic contact for p-type group iii-v semiconductors
IPC: H01L33/36
Filed: 1972-11-15
Abstract: 1390775 Semiconductor devices GENERAL ELECTRIC CO 15 Nov 1972 [29 Dec 1971] 52839/72 Heading H1K An ohmic contact to a P-type, Groups III-V semiconductor material comprises a sintered combination of layers of gold, a Group II metal, and a'further gold layer. The Group II metal may be zinc and form part only of a gold-zinc layer, the zinc being 1-15% by weight of the gold. The layers may be deposited by vacuum evaporation and thereafter sintered, the zinc mixing with the first gold layer to form a low resistance contact. Prior to deposition of the first gold layer, another gold layer may be alloyed to the semiconductor material, which may be of GaAs, GaP or GaAsP. The material may form a light emitting diode and be supported on a header of cobalt, nickel and iron alloy, and encapsulated by a can having a lens in one surface. A plurality of devices may be formed from a single wafer following deposition of the contact material.
Patent GB-1212894-A (GB)
Title: Adjustable vacuum platen
IPC: B29C43/00
Filed: 1968-11-08
Abstract: 1,212,894. Laminating apparatus. HOME COMFORT PRODUCTS CO. 8 Nov., 1968 [29 Nov., 1967], No. 53048/68. Heading B5N. A vacuum platen for applying a surface skin to a laminate comprises a framework 20 swing- able between a loading position and a horizontal position and supporting a flat surface formed by spaced longitudinal members 30 having apertures 35 therethrough which connect with conduits 40, 42 for vacuum application; and means which can be subsequently disengaged for positioning and retaining the skin on the surface 30. The skin is held in contact with the surface 30 in its loading position, vacuum is applied and the retaining means disengaged: the framework is then pivoted to the horizontal position for skin application by vacuum release. Grooves 36, 37 spread the applied vacuum, and the area of application is controlled by valves communicating with couplings 43, 44. The retaining means comprise brackets 50, comprising arms 53, 54, which are rotatable with pinions 60, 62 to enable engagement with or disengagement from the members 30. Pinions 61, 62 are rotatable by a pneumatic ram 80 controlling a rack 70, from which they may be disengaged by sliding longitudinally (Figs. 6-8, not shown) so that skins of varying sizes may be supported. A plunger may be provided (Figs. 9-10, not shown) to prevent sticking of the skin to the members 30. Pivoting of the framework may be controlled by an hydraulic or pneumatic ram (Fig. 2, not shown).
Patent GB-1173738-A (GB)
Title: Improvements in Worm Extruders for the Treatment of Synthetic Materials
IPC: B29C48/85
Filed: 1968-11-12
Abstract: 1,173,738. Screw extruders. SCHLOEMANN A.G. 12 Nov., 1968 [28 Nov., 1967], Heading B5A. The screw of a screw extruder is provided with a cooling liquid e.g. water, within an axial bore 5, the liquid being initially admitted to the bore at room temperature and at a pressure below atmospheric to occupy e.g. 5-50%, preferably 25-30%, of the volume thereof, the bore thereafter being hermetically sealed. In operation, cooling of screw tip 4 occurs due to vaporization of the liquid, the vapour moving rearwardly to condense and the condensed liquid moving forwardly to be vaporized again within tip 4. The heat of condensation aids the plasticization of material newly fed to the screw. A screw thread 6 may be providedwithin bore 5 to facilitate forward movement of the liquid and also provides an increased internal surface area. To regulate the temperature of the screw, a threaded plug 7 is provided which moves axially when rotated by means of a rod passing through a fluid-light bore in drive shaft 8. The invention has particular application to twin-screw extruders.
Patent GB-1121380-A (GB)
Title: Hinge device for the lids of freezer cabinets
IPC: E05F1/12
Filed: 1965-07-28
Abstract: 1,121,380. Spring hinge. W. GRONBACH. 28 July, 1965, No. 54366/67. Divided out of 1,111,862. Heading E2F. A spring-loaded hinge, e.g. for the lid of a freezer cabinet, which urges the lid towards both the open and closed positions, comprises a pivot pin 8 about which the lid 7 carrying a built-in U-shaped housing 11 can rotate, each limb of the housing is apertured to receive the pivot pin, one aperture 14 being elongated to facilitate assembly. A two-armed cam member 18 is fixed to the pivot pin, the arms being parallel and having two cam surfaces 19 and 20 separated by an edge 21. A cam follower in the form of rollers 24 and 25 attached to an arm pivotable about a point 22 are urged into engagement with one or the other of the cam surfaces by the compressed coil spring 28 which bears on the reciprocating guide bar 27. In the closed position (Fig. 1, not shown), the cam follower bears against the cam surface 19 and urges the lid to the closed position. On opening the lid, the cam follower moves over the edge 21 on to cam surface 20 and urges the lid towards the open position. In the modification of Figs. 4 and 5 (not shown), the cam followers are not en a pivoted arm, but are contained in arcuate tracks in the guide bar 27, along which they may move as the lid position is varied.
Patent GB-1442200-A (GB)
Title: Organic photoconductive composition and electrophotographic member
IPC: G03G5/06
Filed: 1973-11-23
Abstract: 1442200 Electro-photographic materials containing change transfer complexes PITNEYBOWES Inc 23 Nov 1973 [1 Dec 1972] 54445/73 Heading G2C An electro-photographic composition comprises a change transfer complex of (a) a dicarbazolyl compound of Formula:- wherein R is anylene, alkylene or cycloalkylene with (b) a Lewis acid and (c) poly N-vinyl carbazole or a helogenated polymer thereof, wherein molar ratio of (a) to (b) is 1:2-5 and (c) constitutes 5-50 wt. per cent of the total weight of the composition. 1,2-dicarbazolyl-cycylobutane is the specified dicarbazolyl; trinitrofluorenone is the specified Lewis acid and poly-N-vinyl carbazole is the specified polymer. The composition is coated on an electrically conductive support to produce a more sensitive material than if either (a) or (c) are absent. The composition may contain a dye sensitizer.
Patent GB-1300110-A (GB)
Title: Improvements in or relating to machines for granulating thermoplastics materials
IPC: B29B9/06
Filed: 1970-11-18
Abstract: 1300110 Extrusion cutter adjustment HERMANN BERSTORFF MASCHINENBAU GmbH 18 Nov 1970 [23 Dec 1969] 54728/70 Heading B5A [Also in Division F2] In granulating apparatus wherein the clearance between the blades 2 of a rotary cutter head 1 and an extrusion die face, at which the blades 2 cut thermoplastics issuing from extrusion orifices 4, is adjustable by a differential screw device which acts via a counter-stop 19, on a stop 14 connected to a bush 9 surrounding and transmitting the adjustment movement to the rotary shaft 5 of the head 1, the lost motion in the threads of the differential screw device is continuously taken up by a fluid piston and cylinder device 13 which acts, via a pin 10 and clevis 11, 12 connection to the bush 9, to urge the stop 14 against the counter-stop 19. The stop 14 is eccentrically adjustably rotatable about a pin 15, connected to the bush 9, into a position in which it is locked by a nut 16. The bush 9 is slidable within a fixed housing 6 to effect the adjustment, and the differential screw device is also secured to the housing 6, at a bearing 18 which non-rotatively supports an internally threaded bush 17 at one end and, at the other end, non-rotatively supports the counter-stop 19 for movement axially, to effect the adjustment in engagement with the stop 14, under the action of a screw 20, threadedly engaging within the bush 17 at a pitch, e.g. 2 mm., which is greater than the pitch, e.g. 1À5 mm., at which it engages within the counterstop 19. The amount of the adjustment is indicated by a dial gauge 21, the feeler 22 whereof contacts the stop 14. The extrudate cut from the die face collects in a casing 6 and, together with water from a connection 7, is delivered through an opening 8.
Patent GB-1166638-A (GB)
Title: Improvements in or relating to Electromagnetically Operated Mechanisms
IPC: F16B3/04
Filed: 1966-12-08
Abstract: 1,166,638. Electromagnetic contactors; electromagnets. LA TELEMECANIQUE ELECTRIQUE. 8 Dec., 1966 [12 Jan., 1966], No. 54949/66. Headings H1N and H1P. A rectilinearly movable armature 2 is pivotally connected to a lever 4 without play and centering levers 11, 13, 14 guide the armature to prevent deviations from a plane parallel with the pivotal axis 03, 04 of the lever 4. The lever 4 is formed of two parts joined with interfitting parts at the faces 8 with trunnions 6 for the armature pivot projecting outwards, and inward facingblind holes (7) fitting over trunnions on the contact carrier 30. The central pivotal trunnions 5 of the lever fit in holes 21e of a bearing member 21 having projections 21c fitting in slots 51a in an insulating base 51 and retained by engagement of a metal support plate 52. The levers 13, 14 are coupled by a bar 17 which may operate on push buttons of auxiliary switches. The contact carrier 30 is biased by a compression spring 54 acting between the plate 52 and a boss 30a and carries bridging contacts 56 in arc chambers 47. The armature may have side projections acting between cam surfaces on the centering levers (Fig. 2, not shown).
Patent GB-1400349-A (GB)
Title: Machine for cutting brittle materials
IPC: B28D5/04
Filed: 1973-11-27
Abstract: 1400349 Severing MOTOROLA Inc 27 Nov 1973 55023/73 Heading B3D A machine for cutting brittle material, such as quartz, ceramics or crystals 61, comprises continuous wire supply means 10, take-up means 15 for used wire, a plurality of wire guides defining a continuous path between the wire supply means and take-up means and further defining a cutting area 40, material mounting means 60 and wire in the cutting area being mounted for relative converging or diverging movements, and linear wire storage means 24 positioned in the continuous wire path and operable to provide reversible linear movement of the wire within the storage means for producing relative reciprocating movements between wire in the cutting area and the piece of material to be cut. The wire supply means 10 consists of a spool 12 to which the wire is attached and which is driven by a motor 11. The take-up means 15 consists of a similar arrangement of spool 17 driven by a motor 16, the motors being controlled to maintain a substantially constant movement of the wire and a substantially constant tension. The wire from spool 12 passes over idler guide pulleys 20, 21 and on to a multi-grooved pulley 22 rotatable about a fixed axis and a multi-grooved pulley 23 on a carriage 24 movable linearly between limits determined by switches 55, 56. From pulley 23, the wire is guided over pulleys 25, 26, 27 and around multigrooved pulleys 36, 37, 38 which define the cutting area 35. The wire forming the upper web 40 effect a cutting action on the material 61 mounted on a vertically movable base 60. The other webs of the wire may also be used to effect cutting. Pulley 38 is driven by a reversible motor 41 controlled by switches 55, 56. From the cutting area, the wire is guided over pulleys 45, 46, 48, multi-grooved pulley 50 on carriage 24, multi-grooved pulley 51 rotatable about a stationary axis, and pulley 52, 53 on to the take-up spool 17. During cutting, rotation of the motor 41 causes the wire to move in one direction in the cutting area, the movement of the wire being accommodated or stored by movement of the carriage until it actuates one of the switches 55, 56 to reverse the motor 41 and the direction of movement of the wire and carriage.
Patent GB-1488171-A (GB)
Title: Polymerization of formaldehyde and polyoxymethylene obtained thereby
IPC: C08G2/06
Filed: 1974-12-24
Abstract: 1488171 Formaldehyde polymerization SOC ITALIANA RESINE SIR SpA 24 Dec 1974 [28 Dec 1973] 55711/74 Heading C3P Polyoxymethylenes are obtained by the polymerization of monomeric formaldehyde in a liquid medium which is a non-solvent for the polymer and in the presence of a chain transfer agent and of a block copolymer AB wherein A is a polyester derived from a lactone and B is a polyamide derived from a lactam. The block copolymer functions as a catalyst and also stabilizes the product by chemical incorporation therein. The product may be further stabilized by end-group reaction and the addition of anti-oxidants. Typical examples refer to the preparation of caprolactam/caprolactone, caprolactam / pivalolactone or pyrrolidone / valerolactone block copolymers by anionic polymerization, followed by the polymerization of formaldehyde in diluents such as toluene, oyclohexane or n-heptane and using regulators such as ethanol, cyclohexanol or butanol.