baber/WOPTO huggingface dataset:
Patent GB-280116-A (GB)
Title: Improvements in and relating to a process and apparatus for manufacturing porous materials
IPC: C04B38/02
Filed: 1927-05-20
Abstract: 280,116. Menager, A. May 20, 1927. Porous concrete &c.-The press cake obtained in sugar refining and consisting chiefly of calcium carbonate and colloidal substances (albumen, casein, oil, &c.) is used with an acid to generate gas bubbles in a plastic mass. This may be composed of cement, plaster, lime, magnesia, insulating earth, clay, &c., with or without fillers such as sand, pumice, &c. The binding-agent is preferably triturated with a small addition of agar-agar, or a similar agglutinant. The stability of the bubbles is increased by the addition to the mass of a proportion of clay or of an additional quantity of the press cake emulsified in each case with water or resinous materials. In using the apparatus shown in the Figure, the ground cake is placed in the lower mixing chamber h and the mortar in the upper vat k; acid is added by the pipe u and the stirring blades c are set in motion, mixing the materials and also entraining air bubbles through the pipe j. The expansion of the mortar is controlled by the piston m. After the reaction is complete the mass is discharged through the doors x, the stirrer n being meanwhile rotated to ensure uniformity.
Patent GB-857698-A (GB)
Title: Process for the preparation of chlorinated and sulphochlorinated polyolefines
IPC: C08F8/20
Filed: 1957-04-29
Abstract: A polyolefin obtained by the low pressure polymerization of at least one unsaturated hydrocarbon having at least three carbon atoms is pre-chlorinated in a first stage under superatmospheric pressure at 100-160 DEG C. in a chlorinated hydrocarbon boiling below 100 DEG C. and the product reacted with chlorine or with chlorine and sulphur dioxide under atmospheric pressure at 20 to 80 DEG C.  The polyolefine may be obtained by the processes described in Specifications 799,392, 799,823 and 801,031.  Copolymers containing up to 99% ethylene may be used while carbon tetrachloride is the preferred chlorinated hydrocarbon. Copolymers of ethylene with propylene, butylenes, pentenes and vinylcyclohexenes are specified.
Patent GB-1482381-A (GB)
Title: Walkie talkie device
IPC: H04B1/38
Filed: 1975-04-03
Abstract: 1482381 Sound producing instruments MARVIN GLASS & ASSOCIATES 3 April 1975 [7 Oct 1974] 13702/75 Heading G5J [Also in Division H4] A walkie talkie unit comprises a transceiver 26, including a speaker/microphone 30 and an audio signal generator 36 connected to the transceiver. When actuated by a hand manipulated actuator A the generator provides "warning" signals for transmission to another walkie talkie when the unit is in a transmitting mode and provides audio signals for application to the unit speaker to generate sound when the unit is in a receiving mode. This affords play value. The signal generator 36 incorporates a pair of unijunction transistor oscillators Q 1 , Q 2  operating together to produce a warbling note. A switch 54 controlled by the hand manipulated actuator may connect only contact 72 to earth or both contacts 74 and 72. In this latter case a resistor R4 is connected in parallel with R1 to the base of unijunction Q 1  to change the oscillator frequency. The unit housing has a pivotally mounted cover which is automatically opend when the actuator is manipulated so that sounds may be produced by or transmitted to the speaker/microphone.
Patent GB-150418-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D15/04
Filed: 1919-05-30
Abstract: 150,418. British Thomson - Houston Co., (General Electric Co.). May 30, 1919. Cooling parts.-In a turbine having ahead and astern sections upon one shaft, overheating of the idle-running astern section is prevented by the introduction of comparatively cool steam taken from a point adjacent the last ring of blades of the ahead section. The steam is led by a pipe 11 to the inlet of the idle section. The pipe is preferably of a flattened oval section and may be fitted with a non-return valve 12. Reference has been directed by the Comptroller to Specification 131,428.
Patent GB-920383-A (GB)
Title: Expansion joint
IPC: E04B1/68
Filed: 1961-04-17
Abstract: 920,383. Sheet roofing expansion joints. DOW CHEMICAL CO. April 17, 1961 [May 13, 1960], No. 13765/61. Class 20 (4). An expandable roofing joint comprises a first sheet member 12 having an edge adjacent to but spaced from an edge of a second sheet member 13, a recess, 20, 21, respectively, being provided at or adjacent to the aforesaid edges to receive an elongated flexible foamed plastic member 23, for example of polyethylene, of generally curved cross-section extending between a face of each of said sheet members. The sheet members may be co-planar as in Fig. 1, or may define an external or internal angle. A flexible strip 28, which may be formed of a copolymer of vinylidine chloride containing carbon black, overlays the member 23 and is affixed to each of the sheets. Strips 31, 32 of roofing felt are adhesively secured over the edges of the strip 28.
Patent GB-616550-A (GB)
Title: Improvements in or relating to float valves for flushing or like cisterns
IPC: F16K47/02
Filed: 1946-05-07
Abstract: 616,550. Ball-and-float valves. FORDHAM PRESSINGS, Ltd., and PARKER, J. F. May 7, 1946, No. 13782. [Class 135] In a flushing or like cistern, the discharge pipe 5 from the inlet valve 1 reaches to the bottom of the cistern and it has a restricted throat 8 so that the rate of discharge from the valve is equal to the rate of flow into it, and a slight clearance or air leak between the valve plunger and the valve casing prevents water from being sucked back should a vacuum form in the inlet pipe. Pipe 5 may be telescopic or fitted with a rubber tube which is free to lie on the bottom of the cistern. The .throat 8 is constituted by a metal sleeve into which the tube 5 is grooved, as shown.
Patent GB-119439-A (GB)
Title: Improvements in Pencil Sharpeners.
Inventor: BEATTIE WILLIAM HERBERT TERRAN
IPC: B43L23/00
Filed: 1917-10-01
Abstract: 119,439. Beattie, W. H. T. Oct. 1, 1917. Pencil-sharpeners.-In a pencil-sharpener for forming chisel points, the tube 6 serving to hold the pencil in the path of the reciprocating cutter j is provided with a zigzag groove in which a detent 4 secured to the holder i engages; when the tube is turned through 90 degrees by means of a milled head 8 for the formation of a fresh face of the point, the detent 4 passes from one angle of the groove to the next and moves the tube and :pencil longitudinally to lengthen or shorten the cut. The machine shown is the same as that described in Specification 119,294.
Patent GB-824311-A (GB)
Title: New alkaloid and process for manufacturing same
IPC: C07D459/00
Filed: 1956-05-04
Abstract: The invention comprises the alkaloid reserpoxidine and its salts, together with its preparation from reserpine mother liquors (containing the weakly basic alkaloids less the greater part of the reserpine, deserpidine and rescinnamine present) by treatment with nitric acid, separating the nitrate salt formed, and, if desired, converting this to the free base (e.g. with ammonia) and thence into another salt.  Reserpoxidine can be reduced to reserpine catalytically or with zinc and acetic acid. Examples are given of the isolation of reserpoxidine (as nitrate and free base), and conversion into oxalate, perchlorate, sulphate and hydrochloride.  Salts can also be made with phosphoric, acetic, propionic, lactic, succinic, malic, tartaric, citric, p  ascorbic, methanesulphonic, ethanesulphonic, isethionic, benzoic, salicylic, p-aminosalicylic, toluenesulphonic and picric acids.  The starting material can be obtained from Rauwolfia serpentina, R. canesceus or R. vomitoria by the method of Specification 734,108, and the reserpine mother liquor (e.g. as ethanol extract) freed from deserpidine and rescinnamine by the method of Specification 809,912.ALSO:Pharmaceutical preparation comprise the hypotensive alkaloid reserpoxidine (or a salt thereof) with a carrier, e.g. in the form of tablets, powder, capsules, pills, solutions, emulsions or suspensions.  There may be present (1) auxiliary substances such as preservatives, stabilizers, wetting or emulsifying agents, buffers or salts for the control of osmotic pressure; and (2) other active substances such as ganglionic blockers, adrenergic blockers, sedatives, central nervous stimultants, cholinergic blockers or antihistaminics.  Specified substances of type (2) are N : N : N1 : N1 : 3-pentamethyl - N : N1 - diethyl - 3 - azopentylene-1 : 5-diammonium dibromide, hexamethylene-bis - trimethylammonium bromide, pentamethylene - bis - methylpyrrolidinium tartrate, 2 - (21 - dimethylaminoethyl) - 4 : 5 : 6 : 7-tetrachloro - isoindoline dimethochloride, 2-(N1 - p - tolyl - N1 - m - hydroxyphenylaminomethyl) - imidazoline, ergot alkaloid derivatives, 1 - hydrazino - phthalazine, 1 : 4 - dihydrazinophthalazine, reserpine, deserpidine, 3 : 4 : 5 - trimethoxycinnamoyl methyl reserpate or deserpidate, acetyl methyl reserpate, 3 - ethyl - 3 - phenyl - 2 : 6 - dioxo - piperidine, barbiturates, N - (31 - dimethylaminopropyl) - 3-chlorophenthiazine, methyl a  - piperidylphenyl - acetate, a  - methylphenylethylamine, diethylaminoethyl a  - cyclohexyl - a  - phenyl glycollate methobromide, atropine, diethylaminoethyl 9 - xanthenecarboxylate methobromide, and 2 - [benzyl - (21 - dimethylaminoethyl) - amino] - pyridine.  Examples show compositions of reserpoxidine in the form of tablets or as injections containing citric acid, benzyl alcohol, polyethyleneglycol and water.  Other specified ingredients are vegetable oils, ascorbic acid, propylene glycol, petroleum jelly and cholesterol.  The amount of reserpoxidine in each dose may be 0.1 to 100 mg., preferably 0.2 to 20 mg.
Patent GB-623879-A (GB)
Title: Improvements in or relating to hot-plates
IPC: A47J39/02
Filed: 1947-05-23
Abstract: 623,879. Hot - plates. MAYER SOC. ANON., G. May 23, 1947, No. 13940. Convention date, March 7, 1941. [Class 28(i)] A hot-plate or warming-plate comprises a receptacle 1 containing a source of heat, e.g. candles 9, and covered by two hinged half lids 2, 3. Each half lid has an end 8, projecting beyond its hinge 5 so that the half lid can be opened by downward pressure on the end 8. The ends 8 also serve as carrying handles. The lids are apertured to allow heat to the dishes thereon. The receptacle and lids may be made of aluminium &c. or glass or "Bakelite" (Registered Trade Mark).
Patent GB-1206196-A (GB)
Title: Infinitely variable hydrostatic transmission for vehicles, especially for motor vehicles
IPC: F16H47/04
Filed: 1968-03-22
Abstract: 1,206,196. Hydrostatic transmissions. DAIMLER-BENZ A.G. 22 March, 1968 [29 March, 1967], No. 13973/68. Headings F2C and F2D. [Also in Division G3] An infinitely variable hydrostatic transmission comprises an axial-piston pump 15, Fig. 1, driven by the power unit of the vehicle and at least two axial-piston motors 16, 17, one motor which is rigidly connected to the output shaft and at least one other motor which can while in a driving position, be coupled to or uncoupled from the output shaft by a clutch 19 and the pump is arranged to be so adjusted, on uncoupling of the other motor that the one motor can furnish the output torque required. Function summary.-In a vehicle transmission an axial piston pump drives two axial piston motors, one motor driving the wheels directly and the other driving through intermediate gearing and a fluid-operated clutch is disengaged when a relief valve is actuated by engagement with the motor swash plate, the delivery of the pump being temporarily reduced at the same time to prevent jolting. The directly connected motor is thereby enabled to deliver the full drive in a desired range with increased efficiency compared with that obtained when two motors are driving. Operation.-To start, shaft 25 is rotated counterclockwise by a lever 31 assisted by a servo-piston 30. Movement of the section 40 of cam plate 26 tilts swash plate 32 whilst the motor swash plates 35, 23 remain at their maximum tilt. After the pump swash plate has reached its maximum tilt it maintained thereat by cam section 41 whilst cam section 39 reduces the tilt angle of swash plate 23 until the latter engages the relief valve 21. At the same time section 43 reduces the tilt angle of the pump swash plate 32 so that pump 16 and motor 15 can transmit the torque without jolting. Subsequently the pump swash plate 32 is brought to maximum tilt and section 44 moves swash plate 35 to its minimum tilt to permit maximum vehicle speed.
Patent GB-184864-A (GB)
Title: Improvements in or relating to cigarette holders, pipes and like smokers' requisites
IPC: A24F3/00
Filed: 1921-05-19
Abstract: 184,864. Taylor, W. J. May 19, 1921. Tobacco pipes and cigar and cigarette holders. -The holder or pipe bowl is provided with a casing, or closed in, to retain the tobacco ash, and is fitted with a rotary wheel or other lighter for igniting the cigarette 2, or tobacco. Fig. 2 shows a casing 1 fitted on a cigarette holder 3 and provided with a perforated cover 7 with a sparking wheel 13 and a wick 11 supplied with inflammable liquid by a container 12. Fig. 4 shows a pipe bowl 20 fitted with a perforated cover 17 with a spacing-wheel arrangement 13. A sleeve 23 adapted to slide on the stem 22 carries a container 24 for inflammable liquid, &c. and a wick 25.
Patent GB-351176-A (GB)
Title: Improvements in continuous furnaces
IPC: F27D3/00
Filed: 1930-05-07
Abstract: 351,176. Tempering metals. UGINEINFRA, 21, Rue du Drac, Grenoble, Isere, France. May 7, 1930, No. 14081. Convention date, May 8, 1929. [Class 72.] In a continuous furnace for the tempering or other treatment of ferro-magnetic articles or material their movement through the furnace is effected by magnetic attraction without the assistance of gravity. The articles A, which may be ferro-magnetic, or placed in ferro-magnetic containers, form a magnetic chain which is pulled forward by the magnet 5, and thus pushes along the demagnetized articles to the point where they drop out of the furnace. The movement of the articles may be assisted by spring pressure, gas pressure, &c. The furnace may be heated by a resistance the magnetic field of which may be used to assist that of the magnet 5. An additional electromagnet 9 may be supplied with alternating or pulsating current to impart vibration to the articles. The material treated may be in long lengths wound on a drum at each end of the furnace. A differential thermo-couple pyrometer may be employed having one joint at the demagnetization point d and the other at the discharge point b.
Patent GB-592901-A (GB)
Title: Improvements in or relating to diaphragm chucks
IPC: B23B31/32
Filed: 1945-06-05
Abstract: 592,901. Chucks. WOODWORTH CO., N. A. June 5, 1945, No. 14102. Convention date, Nov. 11, 1944. [Class 83 (iii)] A diaphragm chuck is provided with means secured to one side of the diaphragm to counteract the effect of centrifugal force on the workgripping jaws &c. carried on the other face, the assembly being mounted on a plate on the chuck body. The diaphragm 12, thicker at the centre than at the outer edge, is dished to fit over the locating-spigot of a plate 10 to which it is secured by threaded taper-pins, the plate being concentrically mounted on the body 16 by means of screws 14. The jaws 26 are adjustably mounted by screws 30 each engaging a plate 36 on the other side of the diaphragm; also passing through each plate 36 and the diaphragm is a threaded member 40 with a holding nut 44 and a set-screw 50 forming an abutment for the jaw. Distortion of the diaphragm to open the jaws is effected by a rod 62 which engages a cup-shaped member 58 engaging the inner edge of the diaphragm. A cover 90 encloses the jaws &c. and a work stop comprises a screw 66 carried by the member 58. Alternatively, a strap is fixed to the rear of the plate 10 and carries a similar screw.
Patent GB-566620-A (GB)
Title: Improvements in or relating to toggle mechanism for the actuation of platen or like presses
IPC: B30B1/10
Filed: 1943-08-30
Abstract: 566,620. Platen presses. BARRON, A., and BARRON, B. Aug. 30, 1943, No. 14108. [Class 100 (ii)] [Also in Group VIII] A platen press such as used for cutting and creasing operations in which the pressure between the platen D and bed F is provided by toggle levers A, B operated by reciprocating slides C is constructed with yielding connections between the slides G and the toggles which is adapted to yield when the pressure between the platen and bed reaches a predetermined amount and permit of further movement of the slide without an increase in the pressure between the platen and bed. In the machine shown, four toggles are used, two arranged at each corner of the platen D. The yielding connection comprises an adjustable spring P acting upon a nut 0<1> on a rod O connected to a bell-crank N connected to a pivoted triangular member L which is mounted on a slide Band transmits motion by a link L<1> to the link B of the toggle. When extra thick work is acted upon, the spring P permits the lever N to move relatively to the slide B which can complete its motion without exerting excessive strain on the press. Each slide G is operated by a cam H acting upon anti-friction rollers K, K<1>. In the machine shown, the bed F is reciprocated by rods S and cranks on shafts Q which are geared to the cam-shafts, and pressure is applied by the toggles while the cranks operating the rods S are in dead-centre position.
Patent GB-593559-A (GB)
Title: Improvements in or relating to pre-tuned radio receivers
IPC: H03J5/32
Filed: 1945-06-06
Abstract: 593,559. Radio receiving apparatus. COLE, Ltd., E. K., and SHARP, L. W. D. June 6, 1945, No. 14207. [Class 40 (v)] The removal or displacement of part of a pretuned radio receiver, in order to make the pre-setting adjustments, automatically renders the A.V.C. ineffective. The front plate of the chassis (Fig. 2) includes the openings c through which trimming adjustments are made, and is normally concealed by the cover-plate (Fig. 3), attached by means of screws entering the bosses f. Removal of the cover-plate releases the switch s5, which comprises a boss g (Fig. 4) attached to the panel a, the plunger h and attached contact k and the spring i. The contact k is connected to a suitable point in the A.V.C. line (Fig. 1, not shown), whereby contact with the earthed bush grenders the A.V.C. ineffective.
Patent GB-229242-A (GB)
Title: Improvements in or relating to air heaters
IPC: F28D9/00
Filed: 1924-06-12
Abstract: 229,242. Beauvais, G. M. G. de. Feb. 11, 1924, [Convention date]. Plate apparatus.-An air heater of the plate type comprises flat plates a spaced apart by members b placed so as to form the sides of alternate cells for air and heating medium, the edges of the members b and of the plates a being fixed together by parts c which exert, preferably elastically, a clamping action. In the modification shown in Fig. 4 the cells for one of the heat-exchanging media are enclosed on three sides and provided with a baffle d so that entry and exit are on one side only.
Patent GB-239603-A (GB)
Title: Improvements in typographical line composing and casting machines
IPC: B41B11/30
Filed: 1924-06-12
Abstract: 239,603. Linotype & Machinery, Ltd., and Gayter, E. June 12, 1924. Clamping matrices.-The vicemechanism of type-bar-making machines is so arranged as to avoid the projection of parts, such as the adjusting-rack for the left-hand jaw, beyond the end of the vice. The rack 1 is attached at one end by a screw 2 to the head 3 of the vice-frame 4, and at the other end to the wedgeblock 6, that co-operates with the wedge 7 for effecting the second justification. The left-hand jaw 8 engages the rack by means of a detent 9 carried by a spring-pressed lever 12, which is pivoted on the jaw casting 10. The detent can be released by means of a rod 15, provided with a thumb-piece 17, and the jaw can then be adjusted by means of a rod 19 having a projecting plate 18. The detent 9 and lever 12 may be mounted in a block separate from the vice-jaw, to permit the jaw to be readily moved up to the opposing jaw 23 for casting blank slugs.
Patent GB-774840-A (GB)
Title: Improvements in and relating to harvester threshers
IPC: A01D41/12
Filed: 1955-05-17
Abstract: 774,840. Harvester-thrashers. AKTIEBOLAGET WESTERASMASKINER. May 17, 1955 [May 22, 1954], No. 14270/55. Class 58. A harvester-thrasher has a grain bin 1 with an inlet 6 through which grain from the cleaner is fed by an elevator 5 into a substantially horizontal conveyer, comprising a screw 10, throwers 13 and a trough 11, located in the upper part of the bin, e.g. at or near the edge where the top 4 meets a wall 7. The throwers distribute the grain laterally of the axis of the screw through a gap 12 between the trough and the top 4. The throwers may be plates connected axially to the screw between turns thereof. Alternatively, the throwers may be mounted on separate rotatable shafts. The screw may comprise two sections having, respectively, right- and left-hand threads, the inlet 6 then being between the sections. The screws and throwers may rotate 500 to 1000 times per minute. An angularly movable abutment 15 may be provided in the bin so that the grain pushes the abutment on reaching it and causes it to actuate a switch 16, which starts an electric alarm, e.g. a bell. A screw conveyer 2 discharges grain from the bin through an outlet 3.
Patent GB-275756-A (GB)
Title: Improvements in or relating to geysers and the like waterheaters
IPC: F24H1/12
Filed: 1926-06-07
Abstract: 275,756. Hudson. J. J. C., and Hudson, G. C. June 7, 1926. Portable water-heaters: slab-form boilers. - A water-heater comprises a narrow, flat, substantially vertical chamber one wall of which has fixed therein a series of separate solid heat-conducting pins projecting into the path of the hot gases from a burner. Two such chambers A, B are placed so that the pins E project into the apace C between them in the hot gases rising from an attached gas burner. The appliance is suspended so as to be swung under or away from a tap L. Specification 242,700 is referred to.
Patent GB-704012-A (GB)
Title: Method of and apparatus for precision finishing bearings
Inventor: MCKINLEY JOHN MORGAN
IPC: F16C33/14
Filed: 1951-06-18
Abstract: 704,012. Broaching. CLEVITE, Ltd. June 18, 1951, No. 14392/51. Class 83 (3) A method of finishing half-bearing shells for combustion engines in one continuous operation comprises the steps of broaching one surface of the shell and then clamping the shell by the finished surface while the remaining surfaces are broached. A bimetallic strip for a bearing shell is first pressed into a half-round form with excess metal at the ends. The shell is then clamped in a broaching machine and tools 24 remove all but 0.01 in. of the excess metal. In a second broaching machine, having a tool-slide 25 which is advanced in a single finishing stroke past the shell, the shell is first positioned by blocks 30 and clamped by slightly tapered lands 26a while the edges are accurately finished by tools 27. Clamps 40 then engage the finished edges to hold the shell while it is finished internally by the broach 28. Alternatively, the internal surface may be finished before the edges.