baber/WOPTO huggingface dataset:
Patent GB-655814-A (GB)
Title: Improvements in or relating to dusting cabinets
Inventor: MEDCALF HENRY VICTOR GEORGE
IPC: G03F7/40
Filed: 1948-10-21
Abstract: 655,814. Etching-apparatus. HUNTERPENROSE, Ltd. Oct. 21, 1948, No. 27417. [Class 100 (ii)] A dusting cabinet 15 for the application of dragons blood or other media in powder form to photographically-prepared printing-plates comprises a hood 1 enclosing a dusting tray 9, the front of the hood being open and the back of the hood having an exhaust opening 12 connected by ducting 13 to a filter chamber 14 associated with a fan 16 so that powder drawn from the hood is extracted in the chamber and clean air passes to the fan, thus preventing the occurrence of blow-backs in the hood. The cabinet comprises front and rear walls 17 and 18, and side walls 15 extending downwardly from the hood 1. The cabinet is divided by a vertical partition 20 in front of which drawers 21 and a cupboard 22 are provided, while the space at the rear of the partition forms the filter chamber 14. A drawer 25 is provided beneath a horizontal partition 24 having openings 27 over each of which is superimposed a filter bag 28. When the fan 16 operates, air laden with dragons blood is drawn into the ducting 13 and passes into a collecting compartment constituted by the drawer 25 wherein dust is deposited. The air then makes a sharp turn upwardly, thus causing further precipitation of the dragons blood in the drawer 25. Finally, air is drawn through the walls of the filter-bags 28 formed of fine cotton fabric, leaving any remaining dragons blood on the inside walls. Clean air which passes through the fan 16 is expelled through an exhaust port 31. The filter bags may be supported in a light frame (not shown) slidably mounted such that clinging powder may be shaken from the bags to ensure their efficiency.
Patent GB-864874-A (GB)
Title: Condensation products of quaternary salts of resinous c-vinylpyridine polymers with hydrazines containing quaternary nitrogen atoms and photographic films rendered antistatic therewith
IPC: C07D213/53
Filed: 1958-08-27
Abstract: Quaternary salts of resinous C-vinylpyridine polymers wherein at least 70% by weight of the vinylpyridine units have the formula:- <FORM:0864874/IV (a)/1> where R is an alkyl group of 1 to 4 carbon atoms or a phenyl group, Y is hydrogen or an alkyl group of 1 to 4 carbon atoms, and X is a halogen atom, (as described in Specification 855,028), are reacted with betaine hydrazine hydrochloride to give polymeric condensation products of containing units of formula:- <FORM:0864874/IV (a)/2> or are reacted with carbohydrazinomethyl-pyridinium chloride to give products containing units of formula:-  <FORM:0864874/IV (a)/3> The polymer may be a copolymer with styrene, an acrylic acid ester or amide, or an a -alkyl acrylic acid ester or amide.  In examples condensation products of poly-4-vinylpyridinium chloroacetone and poly-4-vinylpyridinium a chloroacetophenone with carbohydrazinomethylpyridinium chloride and with betaine hydrazide hydrochloride, are obtained.  The products are used as antistatic coatings on photographic films.
Patent GB-655304-A (GB)
Title: Improvements in or relating to turbine cooling systems
Inventor: SMITH AUSTINGEOFFREY
IPC: F02C3/06
Filed: 1948-10-15
Abstract: 655,304. Gas turbine plant. POWER JETS (Research & Development), Ltd. Oct. 15, 1948, No. 27666/47. [Class 110(iii)] In a gas turbine plant comprising a compressor which supplies working fluid successively through a diffuser, heating means and a turbine, cooling fluid is drawn from a high pressure region of the compressor system passed through the turbine structure to cool it and returned to a lower pressure region of the diffuser upstream of the heating means but downstream of the compressor. In the plant shown, Fig. 1, a multistage axial flow compressor 1 is driven by a multistage axial flow turbine 2 which is supplied with gas by a combustion chamber 7. An annular cooling channel 13 is formed around the rotor 10 by means of shroud rings 15 around the base portions 16 of blades 14. The base portions 16 are provided with radial slits to allow passage of cooling air along the channel 13. Air from the diffuser 6 is led by a pipe 18 to the hollow shaft 3 from which it passes through the impeller vanes 22 to the channel 13. The air leaving the channel 13 passes through turbine vanes 24 to the pipe 27 which returns it into the stream of working fluid at the diffuser 6 preferable downstream of an exhaust heat exchanger if such is provided. The point at which the air is returned to the working fluid has a lower pressure than the point at which it is taken. To facilitate the conduction of heat to the root of the blade, each blade may have one or more closed internal cavities containing a suitable cooling medium such as sodium, caesium, aluminium chloride or bromide. The rotor 10 of the turbine 2 is constructed of a number of discs 11 held together by a member 12 enclosed in the hollow shaft 3. In the arrangement shown in Fig. 4, each rotor element 11 has a central bore in which is fitted a header chamber 32 having radially extending hollow ribs 33, the header being connected by radial tubes 34 with ducts 35 in the blades to form a closed circuit which is filled with a cooling medium such as one of the metals or salts referred to above. The annular ports 36 and 37 are fitted with axial flow compressor and turbine blading. The invention may be applied to plant in which the working fluid is heated indirectly in a heat exchanger. Specifications 610,737, 616,672 and 623,841 are referred to.
Patent GB-1192287-A (GB)
Title: A Shelf-Serving Installation
IPC: B65G1/04
Filed: 1968-06-11
Abstract: 1,192,287. Warehouse accessories. DEMAG-ZUG G.m.b.H. 11 June, 1968 [12 July, 1967], No. 27682/68. Heading A4T. [Also in Division B7] A shelf-serving installation comprising a stacking crane 11, Fig. 2, travelling on one or more longitudinal floor rails 2 between shelving and secured against tipping by guides at a higher level, is provided with a crossing bridge 4, Fig. 4, running on cross rails 1 at a slightly lower level than rails 2, enabling the crane to move to another shelving row. Rail 2 crosses rails 1 with gaps at the crossing points and an intermediate longitudinal rail 3. The bridge comprises two connected U-frames 5, 5a with wheels 7 connected at mid-base by a web 9 carrying short sections 10. The arms 5a carrying sprung, displaceable bearing rollers 8, which, when the crane moves on to the bridge, co-operate with stop cams 14 on the crane which is then locked to the bridge by e.g. electromagnetic bolts 21. As the crane moves on to the bridge, the load of the crane via the wheels at the rail sections 10 flexes the arms by bending at the web 9 until wheels 20 on the base rest on the crossrails and rollers 8 contact the stop cams 14 at the ends of the spacers 15. Rollers 22 on arms 5 engage a longitudinal crane girder to hold the crane vertical.
Patent GB-1322418-A (GB)
Title: Apparatus for depositing articles separately on a conveyor
IPC: B65G59/06
Filed: 1971-06-14
Abstract: 1322418 Feeding articles singly from a shoot to a conveyer SIDEL SA 14 June 1971 [29 July 1970] 27799/71 Headings B8A and B8S Apparatus for feeding narrow-necked bottles 2 singly to a conveyer 15 comprises a vertical conduit 1 with a parallel screw 6 having a thread 9 of increasing pitch projecting through an aperture 3 into the path of the bottles 2. The screw 6 has two turns: an upper turn 9 of pitch h less than the height h 1  of the bottles 2 and a lower turn 11 of pitch H greater than the height h 1  of the bottles 2. As shown the screw 6 is driven by a motor 12 to regulate the delivery of the bottles 2 to the conveyer 15. The arrangement of the pitch h ensures that a lower bottle 2c supports an upper bottle 2b with clearance for the introduction of the upper end 13 of the screw 6 into the path of the upper bottle 2b. The pitch H ensures that the succeeding bottles 2 are separated and that there is adequate time for each bottle 2 to be cleared from the path of the lower turn 11 by the conveyer 15 when it is deposited thereon. In a modification (not shown) the screw 6 is free to rotate under the weight of the bottles 2, its output thus depending on the back-log. The operating characteristic of this modification may be further adjusted by a small motor or a friction brake (not shown).
Patent GB-280516-A (GB)
Title: A system of connections for preventing the self-excitation in commutator cascades, having a different frequency from that of the network
IPC: H02K17/38
Filed: 1927-10-20
Abstract: 280,516. Akt.-Ges. Brown, Boveri, et Cie. Nov. 11, 1926, [Convention date]. Alternating-current induction machines.-In a system consisting of a commutator machine cascaded with an induction machine and excited by a voltage proportional over its whole regulating range to the slip-ring voltage of the main induction machine, " self excitation " is prevented by including in the excitation circuit of the commutator machine a device, such as an idly running synchronous or asynchronous machine, having a different resistance from that which it has at slip frequency for each frequency differing substantially from slip frequency. Self excitation is defined as the condition in which a voltage is generated in the commutator machine the magnitude and frequency of which are not determined by those of the voltage imparted to the primary member of the cascade. Fig. 1 shows the use of an asynchronous motor 6 as the correcting device connected in shunt across the exciting windings 5 of the commutator machine 4 which is cascaded with a main induction motor 2 on the network 1. A similar motor 9, Fig. 2, may be used when the windings 5 are fed by an exciter 6, coupled to the main motor or driven separately and excited at 7 through a combination of ohmic and inductive resistances in known manner. The motor 9 may alternatively be connected across the exciting windings 7 in place of the windings 8. The above-described arrangements involve correcting devices in parallel with the exciting circuit and having resistance values smaller than that at slip frequency at frequencies other than slip frequency and it is shown in the Specification that they correct self-excitation. The main network itself may be used as the corrective device, as shown in Fig. 3, in which the numerals 1 to 5 indicate similar items to those in Figs. 1 and 2, and 6 indicates the auxiliary asynchronous motor coupled to the main motor. A current produced by a self-excited voltage in the machine 4 can only reach the exciter winding 5 through the rotor and stator of the main machine 2, the bus-bars 1 and the rotor and stator of the machine 6, but as the network 1 is approximately a short-circuit for such a selfexcited current the current is practically all taken by the short-circuit and effective self-excitation is prevented. Fig. 4 shows a series arrangement using a correcting device having a higher resistance at every frequency other than slip frequency. A synchronous machine 6 connected to the rings of the main motor 1 is rigidly coupled to an asynchronous machine 7 rotating on a frequency equal to twice the slip frequency, this being secured by giving the machine 6 half the pole number of the machine 7 or interposing suitable gearing between the machines. The drive by means of the machine 6 may be replaced by differential gearing driven on the one hand by the main motor and on the other by a synchronous motor running at the synchronous speed of the main motor.
Patent GB-800228-A (GB)
Title: Formation of cored passageways in metal castings
IPC: B22C9/10
Filed: 1956-09-13
Abstract: 800,228. Cores. HOWARD FOUNDRY CO. Sept. 13, 1956 [Oct. 3, 1955 ; Jan. 13, 1956], No. 27992/56. Drawings to Specification. Class 83 (1).  Cores comprise a supported flexible, gaspermeable sleeve. The sleeve may be of wovenglass-fibres or asbestos, and supported on a wire strand or ductile-metal-tubing, which may be perforated, or by interwoven metal-strips or threads. Alternatively, the sleeve may be of woven stainless-steel wire. The outer surface of the sleeve may be made smooth by filling the interstices with a filler such as dry plumbago or titanium dioxide. The sleeve and the support may be removed manually or by selective corrosion, e.g. by nitric acid or a mixture of nitric and hydrofluoric acid. Alternatively, the support may be of low melting-point metal which melts after casting and is poured out, the sleeve being subsequently removed.
Patent GB-721729-A (GB)
Title: Dehydrohalogenation of steroids
IPC: C07J75/00
Filed: 1952-11-06
Abstract: 17a  - Hydroxy - 11 - dehydrocorticosterone - 21-acylates are prepared by treating a 4-chloro-21 - acyloxy - 17a  - hydroxypregnane - 3 : 11 : 20-trione with a nitrogen carbonylic reagent, being semi-carbazide, hydrazine, phenylhydrazine, 2 : 4-dinitrophenylhydrazine or hydroxylamine, in the presence of an organic solvent to eliminate hydrogen chloride from the steroid nucleus and to form the ketonic nitrogen derivative of the 17a  - hydroxy - 11 - dehydrocorticosterone - 21 - acylate, and thereafter reacting said product with a carbonylic exchange reagent (e.g. pyruvic, glucuronic, or 2-keto-gluconic acids, o- or p-hydroxy benzaldehyde, ethyl acetoacetate), at a temperature below about 100 DEG  C.  The 21-acyloxy group may contain from one to eight carbonatoms, and specified solvents are acetic acid, dioxan, tertiary butanol and tetrahydrofuran.  In an example, 4-chloro-21-acetoxy-17a -hydroxypregnane - 3 : 11 : 20 - trione in glacial acetic acid is heated with semi-carbazide hydrochloride and aqueous sodium acetate, and the mixture treated with pyruvic acid to yield 17a -hydroxy - 11 - dehydrocorticosterone - 21 - acetate.  Further examples illustrate the use of the other ketonic reagents mentioned above and o-hydroxy benzaldehyde as the exchange reagent.  A list of other dehydrocorticosterones in which the 21-acylate group ranges from formoxy to octanoyloxy, and which may be similarly obtained is given.
Patent GB-1477443-A (GB)
Title: Internal combsution engine igntion distributor caps
IPC: F02P7/02
Filed: 1975-07-03
Abstract: 1477443 Rotary distributors GENERAL MOTORS CORP 3 July 1975 [12 July 1974] 28010/75 Heading H1N To avoid the disadvantages of moulding electrodes in position in an ignition distributor cap the latter is moulded (preferably from a thermoplastic material) to include a peripheral wall portion 21 and a top portion 20, integral therewith, from the outer surface of which extends a plurality of output terminal towers or bushings, as 16, each with an axial bore 23 therein, into which an elongated conductive member, such as 36, is then inserted with one end extending into the space 22 within the cap 10 and its opposite end extending beyond its respective tower; respective positioning mean locate each insert member within its bore 23 where it is retained by an output terminal, such as 46, secured on the outer end of each insert member. The insert members are rectangular in cross-section, and preferably of copper or aluminium, and the particular embodiment has eight in respective ciroumferentially arranged towers (11 to 17, Figure 2, not shown). The positioning means comprises notches and projections (51, 52 and 53, 54, Figures 6 to 9, not shown). The cap 10 is attached to a conventional bowl 25 by four "L" bolts, such as 28.
Patent GB-905294-A (GB)
Title: Frame for lightweight partitions
IPC: E04B2/74
Filed: 1960-08-12
Abstract: 905,294. Partitions; frame members. VEREINIGTE BAUSTOFFWERKE BODENWERDER G.m.b.H. Aug. 12, 1960 [Aug. 26, 1959], No. 28024/60. Classes 20 (2) and 20 (4). A frame for a partition comprises metal or plastic members of M-section each of which is provided with a fold 9 so that the members may be sprung into engagement with each other. Tongues 4 are stamped out from the webs of the members and when the frame is assembled are bent against the walls 7 to provide stiffening. The member 5 is attached to the ceiling 1 by nails 2.
Patent GB-390839-A (GB)
Title: Improvements in or relating to sound recording
IPC: G11B7/00
Filed: 1931-10-10
Abstract: 390,839. Valve amplifying circuits. KEITH, C. R., 4, Arcade House, Finchley Road, London, ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadwav, New York, U.S.A., and WESTERN ELECTRIC CO., Ltd., Bush House, Aldwych, London.- (Bell Telephone Laboratories, Inc. ; 463, West Street, New York, U.S.A.) Oct. 10, 1931, Nos. 28202/31 and 10160/32. [Class 40 (v).] In recording sound on a film by a modulated light beam, wherein a part of the beam is deflected on to a light sensitive device connected with a monitoring telephone and with other means for facilitating adjustment of the recording apparatus, the light sensitive device 7 is connected in a circuit which may be regarded as a Wheatstone bridge, one arm comprising the primary 43 of a trans. former, for actuating a speaker connected at 49, an amplifier 42, a grid biasing resistance 44, the remaining arms comprising part of a potentiometer 46, the resistance 45, and the other part of the potentiometer 46 respectively. One diagonal of the bridge comprises the battery 40 for the device 7, which battery is connected to the adjustable connection 47 of the potentiometer 46, and the other diagonal includes a meter 48 which may read microamps or milliamps as required. The connection 47 may be adjusted so that when the device 7 is not illuminated the meter 48 reads zero, and the values of the resistances in the bridge may be chosen so that the meter reading will be approximately proportional to the illumination of the device. A telephone headset 50 may be applied in a branch circuit between the amplifier and the negative of the battery 40, which circuit also includes a condenser 51 and a variable resistance 52. Minor modifications of the circuit and values for the resistances therein are given.
Patent GB-635486-A (GB)
Title: An improved composition of matter
IPC: C04B28/14
Filed: 1946-09-20
Abstract: A cold-setting composition for use in the manufacture of slabs, plates, and blocks or as covering for floors, ceilings, decks, walls and partitions and prepared by mixing an aqueous emulsion of a synthetic resin of the ethenoid type with a powdered inorganic material that will set in contact with the water of the emulsion, reinforcing materials, fire-retarders, and fillers, has plaster of Paris, preferably of the slow-setting variety, added in order to control shrinkage.  The resin may be polyvinyl acetate, polyvinyl chloride, a copolymer of vinyl acetate and vinyl chloride, polymethyl methacrylate, polystyrene, or polyvinyl acetal, and the setting-material may be Portland, Roman, Sorel or Titan cement or cement fondu; asbestos may be employed as a reinforcing-agent, magnesium or zinc carbonate as a fire-retarder, sand or crushed slag as a reinforcing-agent, and red iron oxide as a pigment.
Patent GB-533541-A (GB)
Title: Improvements in or relating to the fixture of building boards or the like
IPC: E04B9/16
Filed: 1939-10-20
Abstract: 533,541. Wall and ceiling coverings. HAY. H. M. Oct. 20, 1939, No. 28313. [Class 20 (iv)] Covering boards d for walls and ceilings are supported on the flanges of a lath c having a flanged or bead-headed web adapted to be engaged by the contracted mouthed slot b<SP>1</SP> of a hanger b by which it is supported from a frame member a. The boards may be pressed on to the flanges by clamps e, Fig. 3, slidably engaging the lath and the edges of the board also by means of of a contracted mouthed slot e'. The sides of the clamp and also of the hanger may be resilient and the bead of the lath may be rounded or triangular in section. The hanger may be positioned on the lath by a stop with a screw adapted to secure the lath and stop together. The lath may be of Z-formation as shown in Fig. 12 and a resilient clamp n<SP>1</SP> may be secured directly to it; the edges of the boards being supported by nails or screws n. The hangers may be formed in two adjustable parts. At positions where joints occur in laths, enclosing sleeves are used to surround the ends of the laths, and the hangers support the sleeves.
Patent GB-662409-A (GB)
Title: Improvements in or relating to percussive appliances
IPC: B21J7/12
Filed: 1949-11-04
Abstract: 662,409. Percussive drills. SAN ANTONIO, E. C. Nov. 4, 1949 [Nov. 16, 1948; April 21, 1949], Nos. 28329/49 and 28330/49. Class 124 In a percussive drill the driving mechanism comprises a rotatably driven wheel, a reciprocating striker urged towards a tool by a spring, and a connecting rod having one end connected to the striker and the other slidably and pivotally engaging an arcuate slot in the wheel so that it is carried round with the wheel to a dead centre when the connecting rod may move ahead of the wheel and allow the striker to deliver a blow to the tool or to an anvil. As shown, a striker 8, moving in a bore 1<SP>11</SP>, has pivotally connected to it at 12 a connecting rod 6 the other end of which has a pin engaging in an arcuate slot 14 in a wheel 4 which meshes with a driven bevel wheel 9. A spring 13 urges the striker towards an anvil 18 on which it strikes blows when the wheel reaches such position that the connecting rod may move ahead of it. A rubber buffer 22 may cushion idle blows. The spring 13 may be replaced by two springs anchored at one end to the body of the drill and at the other to the striker, one spring being on either side of the striker; in this embodiment the striker is floating and no guide is required, Fig. 4 (not shown). The arcuate slot may have various shapes, some of which are shown in Figs. 8, 9, 10, and 11.
Patent GB-309367-A (GB)
Title: A towel for drying purposes
IPC: D03D1/00
Filed: 1928-10-03
Abstract: 309,367. Levy, J. Oct. 3, 1928. Drawings to Specification. Mixed fabrics; honeycomb fabrics.-A hand, bath, or domestic towel &c. is made in a honeycomb weave with linen weft and warp threads of twisted cotton.
Patent GB-786334-A (GB)
Title: Improvements in or relating to apparatus for continuous casting
IPC: B22D11/10
Filed: 1953-03-26
Abstract: 786,334. Continuous-casting machines. MARTIN, D. R. March 26, 1953 [March 29, 1952], No. 28409/56. Divided out of 786,333. Class 83 (1). A continuous-casting machine comprises a cooled mould open at both ends, and a substantially vertical guiding-surface 42 against which the casting-jet 40 impinges, the metal being directed into the mould at a point remote from the walls thereof. The apparatus is identical with that described in Specification 786,333. Reference has been directed by the Comptroller to Specification 505,075.
Patent GB-683993-A (GB)
Title: Improvements in jib and cotter joints
IPC: F16B7/02
Filed: 1950-11-21
Abstract: 683,993. Wrenches; cotter extractors. SVENSKA AEROPLAN AKTIEBOLAGET. Nov. 21, 1950 [Nov. 21, 1949], No. 28463/50. Class 61 (iii). [Also in Group XXV] A cotter 5, Fig. 3, connecting members 1, 2 is withdrawn by a screw 24 in a yoke 14 flanged at 22 to engage grooves in the member 1. The screw has a ball end forming a universal joint 11 with a block 12 having a T-slot connection with the cotter. A box spanner attachment for application to the head 18 of the locking-screw of a cotter 15, serves as a cotter extractor. The gibs 5, 6 are recessed at 28 to engage recesses 30 in a plate or washer 19 itself recessed to receive part flanges 34 on a sleeve 33 flanged at 42 and having a bore stepped at 39 to engage a shoulder 38 on the spanner and retain it in engagement with the head 18. The handle 40 of the wrench is pivoted at 41 to facilitate the withdrawal of the cotter and gibs as a whole.