baber/WOPTO huggingface dataset:
Patent GB-1209642-A (GB)
Title: Instrument cooling system
IPC: B01L7/00
Filed: 1967-11-09
Abstract: 1,209,642. Optical apparatus. PERKINELMER CORP. Nov.9, 1967 [Jan. 16, 1967], No.51033/67. Heading G2J. [Also in Divisions G1 and H1] An enclosure, such as the interior of a spectrophotometer, is cooled by mounting a heat dissipating component, such as a power transistor 49 forming part of the circuitry of the instrument, within a vertical duct 51 to produce an upward flow of air 73 causing cool air 70 to flow through opening 60 into the enclosure and to be exhausted through the duct 51. As shown the transistor 49 is mounted on a metal casting 48 spaced from the walls of the duct 51. A partition 42 of black thermoplastic forming the inner wall of the duct receives most of the radiation which is directed from lamp 31 rearwardly by a reflective baffle 40. The lamp 31, monochromator 32, photo-cell 33 and well 39, which receives cuvette 27, are supported by an optical bench 37 mounted on a finned flange 30 extending upwardly from the base 29 so that cool air 75 may also pass between the fins, through the casing and exit at an elongated slot 25.
Patent GB-1138206-A (GB)
Title: Thermosetting resin-pigment composition
IPC: C09D7/47
Filed: 1965-12-01
Abstract: 1,138,206. Resin-pigment dispersions. CHEMETRON CORP. 1 Dec., 1965 [1 Dec., 1964], No. 51062/65. Headings C3P and C3R. [Also in Division B2] A non-gelled thermosetting resin-pigment dispersion comprises a thermosetting resin, a pigment which normally forms a gel when mixed therewith and a gel breaker selected from alkyl and alkenyl hydroxamic acids in which the alkyl or alkenyl group has from 10 to 22 carbon atoms. Examples are given of the production of dispersions comprising an acrylic resin, ferric hydrate or an iron blue pigment, and oleyl hydroxamic acid or lauryl hydroxamic acid, the dispersion medium being a mixture of toluene, butanol and the acetic acid ester of 2-ethoxy ethanol. The dispersions are blended with melamine-formaldehyde resin, aluminium flakes and xylol, sprayed on to a panel and baked.
Patent GB-1151127-A (GB)
Title: Improvements in Nuts for Screwing on to Screw-Threaded Rods, for Constructing Shuttering
IPC: F16B37/16
Filed: 1967-11-10
Abstract: 1,151,127. Wing nuts. NOE-SCHALTECHNIK GEORGE-MEYER-KELLER K.G. 10 Nov., 1967 [6 March, 1967], No. 51176/67. Heading F2H. A nut comprises four extensions 5 extending radially and obliquely from a collar portion 2, the extensions ending in line with the end face 8 of the threaded portion. The end face 3 of the collar portion is large enough to avoid the necessity of using a washer with the nut. The outer ends of the extensions 5 are provided with enlargements 9 which act as weights to give the nut a greater momentum when rotated. The screw-thread has a pitch greater than the normal metric pitch.
Patent GB-1072536-A (GB)
Title: Alumina ceramic
IPC: C04B35/10
Filed: 1965-12-03
Abstract: A sintered glass-free ceramic body contains at least 99.5% Al2O3 and has a density of at least 3.97 g./c.c., the Al2O3 being present as randomly oriented crystals of not above 5m  size.  The rest of the body may be of Al2O3, or other metal oxide(s), e.g. MgO, Cr2O3, NiO, TiO2, CeO2 V2O5, rare earth oxides, but particularly Y2O3, or combinations of the above with MgO. The body may be prepared by compacting the Al2O3 and oxide(s) to a density of 2.2 g./c.c., after grinding to less than 1m , and firing, e.g. at 1400-1550 DEG  C. to sinter the body.  The firing may be carried out in H2, air or vacuum. At least 90% of the Al2O3 may be a -Al2O3. The additive oxides may be added as compounds which form the oxides on firing, e.g. the carbonates. The oxides may be ground in a ball mill using oleic, stearic or naphthenic acid as grinding aids.  Reference has been directed by the Comptroller to Specification 987,841.
Patent GB-1155336-A (GB)
Title: Improvements in or relating to Motor Vehicle Disc Brakes.
IPC: F16D69/00
Filed: 1967-11-14
Abstract: 1,155,336. Disc brakes. ALFRED TEVES G.m.b.H. 14 Nov., 1967 [27 Feb., 1967], No. 51761/67. Heading F2E. A brake disc 7 is cleaned of dust and dirt particles by scrapers 16 which engage the annular portion of the disc acted upon by the friction pads 6, and the pads 6 are held away from the disc by spring-loaded spacer members 1. The scrapers 16 are spring loaded at 17, and also carry polishing members 20 made of material having a lower friction coefficient and higher wear resistance than the pads 6. The spacers 1 are also of such material and are fitted with lateral clearance 15 to enable them to knock out collected dirt 8 upon brake application by piston 13. The springs 3 are compressed upon brake application and the surfaces of the spacers 1 and pads 6 bear together upon the disc, whereby the " hold off" distance A is maintained, independently of pad wear. 1,155,345. Positive clutches, ratchet clutches. P. H. WAGNER. 2 Aug., 1967 [10 Aug., 1966; 12 Nov., 1966; 8 April, 1967], No. 35402/67. Heading F2C. [Also in Division B3] In a wrench, the socket can be driven from a shaft 14 through a planet gear 3, Figs. 6 and 7, or the gearing can be isolated by fixing the shaft to a housing 1. The shaft can be fixed in both, or either, rotary direction by spring-urged pins 36, 37, which co-operate with recesses 34, 35 in the shaft. Either of the pins can be retracted by rotating a ring 44 having a cam path whose ends 45, 46 engage the underside of the head of the pin.
Patent GB-1246527-A (GB)
Title: Fluoroalkoxyalkyl esters
IPC: C07C31/40
Filed: 1969-10-22
Abstract: 1,246,527. Waterproofing textiles. ALLIED CHEMICAL CORP. 22 Oct., 1969 [1 Nov., 1968], No. 51867/69. Heading D1P. [Also in Division C2] Textiles, e.g. cotton, are oil and waterproofed by treatment with a compound of formula (CFR 1 R 2 ) 2  CFO(CF 2 ), (CZ 1 Z 2 CZ 3 Z 4 ) m  (CX 1 X2-CX 3 X 4 ) n  (CH 2 ) p  OCO (CH 2 ) q  Q+X<SP>-</SP> wherein each of R 1  and R 2  is a fluorine or chlorine atom or a perfluoroalkyl group, or two of the groups R 1  and R 2  form a perfluoroalkylene group, not more than one of the R 1  and R 2  groups attached to the same carbon atom being a chlorine atom, each of Z 1  to Z 4  is a hydrogen, fluorine or chlorine atom, not more than two being chlorine atoms, each of X 1  to X 4  is a hydrogen, fluorine or chlorine atom, not more than one being a chlorine atom, r is 1 or 2, each of m and n is 0 or an integer from 1 to 75, m + n being 0 to 75, p is 0 or 1, with the proviso that when p is 0, n is at least one and X 3  and X 4  are hydrogen atoms, q is an integer from 1 to 4, Q is a radical from the nitrogen atom of a tertiary nitrogenous base and X is a halogen atom. The salt may be applied in solution by padding, dipping, spraying or brushing, followed by squeezing or wringing and then by heat-setting.
Patent GB-1492766-A (GB)
Title: Surface acoustic wave couplers
IPC: H03H9/64
Filed: 1974-11-30
Abstract: 1492766 Dispersive surface wave devices MARCONI CO Ltd 15 Sept 1975 [30 Nov 1974] 51938/74 Heading H3U A dispersive surface wave coupler device comprises input and output transducers 2, 3 defining first and second wave tracks and arranged on the same side of wave redirecting means constituted by arrays of parallel coupling strips, each strip in the first track being connected to a respective strip in the second track. As shown in Fig. 1, the strips in both tracks are spaced by n#/2 and are aligned so as to form a single array, and dispersion is obtained by arranging the strips in bands 6, 7, 8 which reflect different frequencies. Alternatively the strip spacing may vary continuously along the device. The device may be used for pulse compression and expansion. The interconnection of the strips may be modified to reduce spurious signals due to reflections. In Fig. 2, pairs of strips in the first track are cross-connected to pairs in the second track, the connections being separated by an insulating region 37; the strips in each track are spaced by #/4. This arrangement is directional and the insertion loss is reduced as compared with the embodiment of Fig. 1. The cross-connections may be avoided by omitting half the strips, e.g. 20a, 21b, 22b, 23a, 24a and 25b (Fig. 3, not shown). In a further embodiment (Fig. 4, not shown) the strips are spaced by #/3 and aligned strips alternate with pairs of cross-coupled strips; again cross-connections may be avoided by omitting strips (Fig. 5, not shown). A directional modification, Fig. 6, may be obtained by omitting only some of the crossconnections. The strips in one track may be shifted longitudinally relative to the strips in the other track without affecting the performance of the device. In addition, the coupling strips may be weighted to control the surface wave amplitude. Also, coupling strips may be provided on both sides of transducers 2, 3.
Patent GB-1320967-A (GB)
Title: Laser system comprising means for controlling the frequency of a laser beam
IPC: H01S3/10
Filed: 1970-11-02
Abstract: 1320967 Lasers U SANDSTROM N ABRAMSON U SJOLIN H MURRAY and B COLDING 2 Nov 1970 [31 Oct 1969] 52033/70 Heading H1C [Also in Division G1] A high coherence gas laser has a short resonator which will support only 2-5 longitudinal modes, and has a control system which gives a stable output frequency by adjusting the resonator length. Fig. 2 shows the laser tube 15 with partially transmitting mirrors 16, 17 mounted thereon; a casing 14 surrounds the tube, and a fan 30 cools the tube when driven by motor 29 so as to control the mirror separation. In this short cavity laser, which has no Brewster windows, adjacent modes are polarized perpendicular to one another. The main output 18 is passed from one end of the tube to a utilization device via polarizer 19. To stabilize a particular mode, the output from the other end of the tube is passed through rotating polarizer 21 and falls on detector 20. This produces a detector output as shown at 24 in Fig. 3, while adjacent modes give an output 25 spaced 90 degrees from curve 24. To ensure that the fan is controlled only by the desired signal 24, the detector output is gated at amplifier 26 with a signal 27, Fig. 3, derived from the motor 22 which drives polarizer 21, the result being that the amplifier 26 functions only when curve 24 nears its maximum. The amplifier output controls relay 28 and hence the fan to stabilize the amplitude and hence the frequency of the desired mode. The fan may be arranged to cool the tube 15, as shown, or may heat it. The control signal may adjust the quantity of air flow rather than stop and start it. The tube may have only one output, a beam splitter giving an output for the utilization device and for the detector. In an alternative method of selecting one polarization state, Fig. 4, two photodiodes connected in a bridge circuit receive the tube output via a Nicol prism, and the bridge output drives the relay 28 to stabilize the stronger of the two polarization states. In place of the fan and its motor, the laser tube may have a metallic heating element around it.
Patent GB-1185555-A (GB)
Title: Improvements in or relating to the Entraining of a Powder in a Gas Stream
Inventor: ARMSBY BERNARD FRANK
IPC: B24C5/02
Filed: 1967-11-17
Abstract: 1,185,555. Blasting. STANDARD TELEPHONES & CABLES Ltd. 17 Nov., 1967, No. 52463/67. Heading B3D. [Also in Division B8] Powder is entrained in a stream of gas, e.g. for machining by abrasion, by passing gas into a closed powder hopper via an inlet duct or system of ducts communicating with the hopper beneath the surface of the powder contained in the hopper and causing the gas to leave the hopper via an outlet duct or system of ducts communicating with the hopper above that surface; the impedance to gas flow into the hopper prevented by the inlet duct or system of ducts is balanced by the impedance to gas flow out of the hopper presented by the outlet duct or system of ducts, whereby gas flow through the hopper is caused to create a suspension of powder particles above the surface of the powder some of which are entrained in the gas flow issuing from the hopper. A hopper 1 is filled, through a pipe normally closed by a cap 5, with powder, e.g. alumina having a particle size of 27 Á or less. At the lower and upper ends of the hopper are connected inlet and outlet ducts 2, 3. The outlet duct 3 ends in a cutting jet 6 whose bore is lined with one or more annular cylinders 7 of sintered alumina, the length of the bore of the cylinder(s) being greater than the diameter; the bore diameter of the duct is at least twice that of the cylinder(s) 7 to minimize abrasion of the duct. In the duct 3 is a solenoid operated pinch-off valve 8. In the inlet duct 2 are an air switch 9, coupled to the valve 8, and a control jet 10 having a bore diameter equal to that of the cylinders) 7, e.g. 1 mm. A non-return valve 11 prevents entry of powder into the duct 2, its resistance to forward flow being small compared with that of the jet 10. The duct 2 is connected to a H.P. air line through an air transformer adjusted to give a regulated output, e.g. 80 p.s.c., means for drying the air may be included. The hopper may contain a wire mesh 12, above the level of the filler, to prevent the entrainment of agglomerations of particles.
Patent GB-1175065-A (GB)
Title: Copy Sheet and Method of Making the Same
IPC: C09C3/08
Filed: 1966-12-13
Abstract: 1,175,065. Pressure transferable inks. KORES MFG. CO. Ltd. 13 Dec., 1966 [12 Sept., 1966], No. 52530/66. Heading C4A. [Also in Division D2] Copy papers are made by uniformly dispersing two pigments in a mixture including two liquids and a binder substance capable of forming a pressure-sensitive layer; the materials being so chosen that the first pigment can remain suspended in the mixture but not in the second liquid alone, the second pigment can remain suspended in the mixture and in the second liquid alone and the binder substance is dissolved in the liquids; preferentially removing the first liquid to precipitate the first pigment on to a substrate, and thereafter removing the second liquid to precipitate the second liquid. In the examples, compositions comprise: (I) cyclohexane, methanol, microcrystalline wax, zinc oxide, kaolin, carbon black and polyglycol; (II) toluene, acetone, ethanol, spermaceti wax, carbon black, lithopone, acrylic resin and chloroform; (III) xylene, isopropanol, stearyl alcohol, cadmium stearate, magnetic pigment and titanium white; (IV) carbon black, sorbitol, benzene, methanol, stearic acid, calcium palmitate and lithopone; (V) ethanol, xylene, hydrogenated castor oil, titanium white, calcium carbonate, mercury sulphide and ketone resin; (VI) carbon black, diglycol stearate, methanol, trichlorethylene, 12-hydroxystearic acid, lithopone, kaolin and titanium white; (VII) carbon black, methanol, methylene chloride, 12-hydroxystearyl alcohol, titanium white, kaolin and lithopone; (VIII) carbon black, titanium white, polyvinyl acetate, methylene chloride, acetone and stearanilide; (IX) carbon black, titanium white, kaolin, polystyrene, dioctyl phthalate, hydrogenated castor oil, benzene and dioxane; (X) carbon black, lithopone, nitrocellulose, castor oil, cetyl alcohol, methylene chloride, acetone and methanol; (XI) carbon black, titanium white, ethylcellulose ricinoleic acid, behenyl alcohol, methylene chloride, and ethanol, (XII) carbon black, lithopone, kaolin, stearyl alcohol, methylene chloride, ethanol and isopropanol, and (XIII) carbon black, " lithol light yellow " pigment, hexane, dioxane and behenic acid. The Specification includes tests of other suitable pigments, solvents, binder substances, auxiliary binding agents and softeners.
Patent GB-1211343-A (GB)
Title: Valve plate for an hydraulic pump or motor
Inventor: WRIGHT JOHN THOMAS MATTHEW
IPC: F04B1/20
Filed: 1966-11-24
Abstract: 1,211,343. Hydraulic reciprocating pumps and motors. JOSEPH LUCAS (INDUSTRIES) Ltd. Feb. 9, 1968 [Nov. 24, 1966], No. 52640/66. Heading F1A. The valve plate of a swash-plate or radial piston pump or motor comprises two parts 10a, 10b with kidney ports formed by aligned apertures 11, 12 and 13, 14 of different sizes, the recesses defined in part 10b by the overlap of the different sized apertures accommodating resilient compressible seal assemblies 15, 16 which engage the pump or motor housing Fig. 1 (not shown). The valve plate is held against rotation by dowels passing through holes in the valve plate, Fig. 4 (not shown). Pressure balancing of the valve plate relative to the cylinder block and housing is provided by seal assemblies 15, 16 and pressure balancing between parts 10a and 10b of the valve plate is provided by recesses in part 10a facing part 10b and connected sequentially to the working cylinders by ports in the valve plate face, sealing assemblies being provided in the recesses, Fig. 4 (not shown).
Patent GB-1284094-A (GB)
Title: A circuit breaker with an automatically resettable trip device
IPC: H01H83/12
Filed: 1969-10-28
Abstract: 1284094 Automatic circuit breakers HEINEMANN ELECTRIC CO 28 Oct 1969 [15 Jan 1969] 52726/69 Heading H1N An automatic circuit breaker of the kind having a manually operable linkage 20 for opening and closing the contacts 30, 32 and having a lock 57 releasable by an electromagnet 41 to open the contacts automatically is adapted for no-volt release. The electromagnet comprises a coil 40 and frame 52 with a non-magnetic tube 65. The tube contains a freely movable magnetic core 66 spring urged downwards. The core 66 carries an extension 80 with a large head 87 co-operating with a pivoted member 84 corresponding to the usual tripping armature. When the core is normally energized the core 66 is drawn upwards into engagement with an insulating buffer 76 (which prevents sticking of the core). If the energization of the coil falls below a predetermined value the core 66 moves downwards and member 84 is pivoted to release the lock 57 on the toggle linkage allowing the contacts to open. The handle is returned automatically to the off position resetting the toggle linkage. A magnetic shunt 94 is fitted and a gap 97 is present in the released position of core 66 so that the member 84 is not held by the electromagnet. A two pole circuit breaker (Fig. 8, not shown) has one pole constructed as above described and a second pole responsive to overload in which the member 84 is replaced by an armature (134) and the core 66 by a slow moving magnetic slug providing delayed tripping. Each pole has an arm (120) (Fig. 7, not shown) pivoted on the pivot of the member 84 or armature (134) and which is turned by the opening of the respective contacts. The two arms are coupled by a shaft (202) and act upon their respective members 84, (134) so that both poles are tripped by either overload or undervoltage.
Patent GB-1412265-A (GB)
Title: Method for producing ethylene/vinyl acetate copolymers
IPC: C08F2/22
Filed: 1972-11-15
Abstract: 1412265 Chain terminators for ethylene/vinyl acetate copolymerization SUMITOMO CHEMICAL CO Ltd 15 Nov 1972 [15 Nov 1971] 52785/72 Heading C3P The molecular weight of an ethylene/vinyl acetate polymer is controlled during its production so that the product has an intrinsic viscosity in the range 0.2-3.0 dl/g., by polymerizing in the presence of not more than 2 mole per cent (based on the total material to be polymerized) of a chain transfer agent which comprises one or more aliphatic dicarboxylic acid diallyl esters having the general formula wherein n is an integer from 2-10 and m is an integer whose value is 2n or 2n -2 provided that when n = 2, m, does not equal 2, and/or one or more aromatic dicarboxylic acid diallyl esters. Examples of suitable diallyl esters are the diallyl esters of ethane-1,2, propane-1,3-, butane-1,4-, pentane-1,5-, hexane-1,6-, heptane- 1,7-, octane-1,8-, nonane-1,9-, and decane-1,10-, dicarboxylic acids; diallyl propene-2,3-dicarboxylate, -1,2-dicarboxylate and -1,3-dicarboxylate; and diallyl phthalate, diallyl terephthalate, diallyl-3-methyl phthalate, diallyl-4- methyl phthalate, diallyl-5-methyl isophthalate and diallyl methyl terephthalate. The initiator is preferably of the redox type.
Patent GB-1529860-A (GB)
Title: Closure for the discharge opening of a container
IPC: B65D47/06
Filed: 1975-12-24
Abstract: The closure device which can be inserted into a container opening has a removal nozzle (33) which can be drawn out and is guided in a liquid-tight manner in a guide nozzle (26). The removal nozzle can be closed by means of a screw cap (36) which, when the removal nozzle has been pushed into the guide nozzle, can also be screwed onto the guide nozzle. This results, both when the removal nozzle has been drawn out and when it has been pushed in, in reliable sealing of the container opening and, at the same time, in a hand grip for drawing out and pushing in the removal nozzle, which prevents the user from being soiled by the container contents. <IMAGE>
Patent GB-1531429-A (GB)
Title: Apparatus for handling semi-conductor wafers to facilitate making electrical tests on semiconductor devices and testing method
IPC: H01L21/677
Filed: 1975-12-29
Abstract: 1531429 Aligning objects under a microscope SONY CORP 29 Dec 1975 [28 Dec 1974(4) 29 Dec 1974] 53002/75 Heading G2J [Also in Divisions H1 and H2] An apparatus for precisely aligning semiconductor wafers on a supporting pallet (which pallet has at least part of its periphery formed in such manner as to facilitate accurate registration at a work station), wherein a transporting arrangement 67 picks up the topmost pallet 21 from an empty stack, and transports it to a precise location under microscope 38, whereat an operator places a wafer in rough alignment on the pallet and subsequently lifts the wafer a short distance from the surface with a micromanipulator vacuum-chuck  170, the micromanipulator being indexable in orthogonal directions in a plane parallel to the wafer surface by means of a first control (e.g. 'joystick' arrangement 142) and being indexable rotatably about an axis perpendicular to the wafer surface by a second control (e.g. knob 179) whereby the wafer may be correctly positioned and subsequently replaced on the pallet surface. The pallet preferably has vacuum holddown arrangements to 'secure' the wafer thereto. When the pallet has  been loaded, the transporting arrangement delivers it to the top of a 'loaded' stack. The mechanical details of the apparatus are given in great detail, particularly with regard to the pneumatically operated 'scissor' of the transporting means which engages the periphery of the pallet. A testing apparatus is disclosed, Fig. 16, wherein the topmost pallet of a stack (the stack having  been prepared by the alignment apparatus of Figs. 3-15), is transported to a precise location under microscope 181 by a transporting apparatus 37 substantially identical to that used in the aforementioned apparatus. At the testing station a plurality of electrical probes 184 are brought into proximity with the first of a large number of identical circuits on the wafer by a stepping motor, the motor being controlled to proceed a predetermined further number of steps subsequent to first contact to ensure adequate electrical contact of the probes. The pallet is sequentially indexed by a step and repeat mechanism 182 until all circuits thereon have been tested, whereafter the transporting mechanism 37 picks up the tested pallet and returns it to-the top of a 'tested' stack. The structure of the individual contact probes (see Division H2) is described in some detail.