baber/WOPTO huggingface dataset:
Patent GB-854061-A (GB)
Title: Improvements in, or relating to appliances for use in the slaughtering of animals
Inventor: ARROWSMITH JOHN BASIL
IPC: A22B3/02
Filed: 1958-05-06
Abstract: 854,061. Slaughtering pistols. ACCLES & SHELVOKE Ltd. Aug. 6, 1959 [May 6, 1958], No. 14391/58. Class 119. In a slaughtering pistol of the captive-bolt type, the barrel 14, Fig. 1, is assembled to a body 10 to which a handle 60 is also assembled, a firing pin 63 and its spring 52 are accommodated within the body 10 and a manually operable cocking lever 68a is mounted on the handle for stressing the spring 52 in preparation for firing. When the lever 68a is pulled towards the handle 60, a trip rod 57 is pulled down against the action of a spring 71, taking with it one arm 55 of the torsion spring 52, the other arm 54 of which engages in a recess 62 in the firing pin 63 and is thus stressed. Movement of the firing pin 63 is prevented by its engagement in one end of a slot 78a in a sear rod 78 urged forwardly by a spring 84 and protruding forwardly of the body 10 at 82. The slot 78a and firing pin 63 are so shaped that on rearward movement of the sear rod 78, the firing pin is released to pass through the slot and fire a cartridge in a radial cartridge chamber 86 formed in a cylindrical breech block member 17 and opening into a space 39 in the barrel and breech block assembly behind the piston 28. A spring-urged contact rod 45 is slidably mounted in a cylindrical guide 43 secured to the barrel 14. On swinging the muzzle end of the pistol towards the animal's head, the head 50 of the contact rod 45 engages the head of the animal and the rod 45 is pressed rearwardly. A tapered end 49 of the rod thus engages a recess 83 in the head 82 of the sear rod to move it rearwardly and thus release the firing pin. The breech block 17 is secured to the barrel 14 by a screw-threaded extension 18 and the assembly is rotatably mounted in the body 10 so as to provide access to the chamber 86 for loading a fresh cartridge. A cartridge extractor 87, Fig. 2 is located in the breech block and is so arranged that on rotation of the barrel and breech block in the body 10 after firing, a projecting nose 90 of the extractor engages a cam groove 89 in the body 10 to move the extractor outwardly and eject the spent cartridge. In another embodiment, Fig. 5 (not shown), no contact rod is provided, the sear rod 78 being operated by a bell crank lever 115 so arranged that on pressing the handle lever the spring 52 is first stressed and then the arm 117 of the lever 115 moves the sear rod 78 rearwardly to release the firing pin.
Patent GB-905029-A (GB)
Title: Improvements relating to apparatus for indicating small movements
Inventor: DYSON JAMES
IPC: G01D5/30
Filed: 1960-04-25
Abstract: 905,029. Detecting small movements photoelectrically. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 5, 1961 [April 25, 1960], No. 14424/60. Class 40 (3). [Also in Group XL (c)] Relates to apparatus for indicating small movements of a body from a straight line X-Y, Fig. 1, defined by an optical system arranged so as to make an object coincide with its image for all positions of the object along the line and comprising for example two identical concave mirrors 1, 2 which are spaced apart by a distance equal to their common radius of curvature. For convenience, partially reflecting plates 5, 6 are included so that the object 7 and its image 8 are separated in space. In such an arrangement, if the object 7 together with plates 5 and 6 and a reference point at 8 are mounted in holder 9 attached to a body, movement of the body from line X-Y results in a displacement of the image of object 7 from the reference point at 8, whereas movement along line X-Y has no effect on the image position. In accordance with the invention, any displacement from the line is detected photo-electrically by an arrangement as shown in Fig. 2, in which the object is constructed as a rod 11, arranged to be illuminated by a light source 15 behind a diffusing screen 14, and the reference point is a slit 27 in a screen 26 behind which is located a photoelectric cell 28. The rod 11 is attached to an arm 12 arranged to be oscillated by an electromagnet 16-18 supplied from an alternating current supply 25, the mean position of the image of the rod in its oscillation being arranged to coincide with slit 27 when the body is on line X-Y. Any movement of the body and holder 9 from line X-Y then causes a displacement of the mean position of the image and results in the production of an alternating component at the frequency of oscillation of rod 11 in the output of photo-electric cell 28. The phase and amplitude of the component are proportional, respectively, to the sign and magnitude of the movement. The cell output is applied to a phase-sensitive rectifier 33, which is also supplied with a reference signal from supply 25, and furnishes a D.C. output of polarity and magnitude indicative of the movement. The output may be displayed on a centre-zero meter 34 or employed to operate a servo system to restore the body to line X-Y. The apparatus shown in Fig. 2 may be employed with any suitable optical system having the characteristics explained with reference to Fig. 1, those shown in Specification 870,461 being stated to be suitable. The invention may be employed to correct for errors of straightness of a lathe bed. The parts of the optical system defining the line X-Y are fixed to the two ends of the lathe bed, and the holder 9 is fixed to the saddle which carries the operating tool.
Patent GB-184898-A (GB)
Title: Improvements in or relating to valves of internal combustion engines
IPC: F01L7/08
Filed: 1921-05-24
Abstract: 184,898. Barison, S. May 24, 1921. Materials, special.-A rotary conical valve is formed of a material, such as cast iron or steel, having a less expansion under heat than the valve seat or casing, which may be of bronze aluminium, &c., in order to prevent seizing. The valve is formed with recesses 5, Figs. 8 and 12, which engage successively with the exhaust and inlet ports 3, 2, Fig. 6, leading to the various cylinders. The valve is cooled by internal circulation of lubricating-oil, and is adjustably held to its seat by a nut 7, Fig. 13, engaging thrust bearings 8 at the end of the valve, ,a cap 11 serving to lock the nut 7 in the adjusted position.
Patent GB-889438-A (GB)
Title: Improvements relating transducer circuits for detecting reactance variations
Inventor: PAYNE EDWIN MALCOLM
IPC: G01R27/02
Filed: 1957-05-07
Abstract: 889,438. Measuring bridges. ELECTRIC & MUSICAL INDUSTRIES Ltd. May 7, 1958 [May 7, 1957], No. 14480/57. Class 37. A transducer circuit detecting variations of a reactance comprises a bridge circuit having a reactance in each arm, one of which is variable, with rectifying devices in two arms and means for applying a reference alternating voltage to two conjugate points of the bridge; the rectifying devices being so disposed as to establish substantially equal extreme voltage excursions at the other two conjugate points on alternate half-cycles of the reference voltage in dependence on the peak level of such voltage, and detecting means for detecting the difference in the instantaneous or mean voltages at the other conjugate points on the remaining halfcycles as an indication of reactance variation. In a circuit (Fig. 1), responsive to reactance variations in accordance with mechanical displacement, a capacitance CV is in series with capacitance C2 and capacitance C3 is in series with capacitance C1 across an earthed A.C. source Vi to form potential dividers whose outputs are applied over resistances R1, R2 to a smoothing circuit and differential indicator; the capacitances C1 and C2 being shunted in corresponding polarity by diodes D1, D2, which conduct on negative half-cycles of the excitation to clamp points A, B to the negative peak value while cutting-off on positive half-cycles to develop voltage excursions of at A, B so that the smoothed resultant at the differential indicator represents the value of capacitance CV which may have any desired law of variation. A differential variable capacitance may replace C3 and CV. In a modification (Fig. 2) capacitance potentiometers C4 C6 and C5, CV across Vi have their junction points corrected to the grids of triodes V1, V2 and earthed over R7, R8, while the cathodes and anodes are connected across Vi in series with resistances R3, R4 and the outputs A, B are taken to a smoothing circuit and differential indicator over resistances R5, R6; V1, V2 are non-conductive on negative half-cycles of excitation during which potential divisions between C4, C6 and C5, CV occur. On positive half-cycles, the anodes of V1, V2 are driven positively and so are their grids, but due to grid current rectification and corresponding variation of valve conductance the anodes A, B are substantially voltage clamped to a value approaching earth level on positive halfcycles, and the voltage excursions at A, B depend on the voltages at the grids thereof and thus upon the values of C6, CV, so that the differential indicator reading indicates the value of CV as a change of direct voltage. The differential indicator (Fig. 3, not shown) may comprise a pair of back-to-back cathode follower triodes feeding a D.C. meter. The capacitance variation may be responsive to variations of machine balance, acoustic vibrations, or physiological variations. A.C. signals may be derived from the output circuit if required.
Patent GB-456612-A (GB)
Title: Improvements in and relating to curtain and like suspenders
IPC: A47H15/02
Filed: 1935-05-18
Abstract: 456,612. Curtain runners. VELLERE, A. E., 79, Dads Lane, and BENCE, A. A., 44, Barn Lane, both in King's Heath, and BERRY, W. R., 892, Kingstanding Road, Erdington, both in Birmingham. May 18, 1935, No. 14568. [Class 52 (v)] In a curtain runner of the kind consisting of a U -shaped sheet metal frame with rollers for engagement with the curtain rail, the frame is formed with integral rims 2 to enclose the peripheries of the rollers 3 and the lower part 4 of the frame is stiffened by being ribbed, corrugated or of channel section. The axles for the rollers may be formed by shaping pressed-out tongues 7 to a part tubular formation in which solid lubricant is placed. The inner ends of the axles may be turned up to prevent axial movement of the rollers. In a modification, the axles consist of short tubes or eyelets expanded into the frame. Friction between the rollers and frame may be reduced by bevelling the rollers, providing them with small bosses or loose washers, or by protuberances on the inner faces of the frames. Cord guides 19 integral with or attached to the frame may be provided. The edges of the frame may be folded over to avoid a sharp edge. One of the rollers 3 may be dispensed with, the frame being suitably modified.
Patent GB-1033395-A (GB)
Title: Improvements relating to the production of aqueous solutions of polyvinyl alcohol
Inventor: BEAUMONT ALBERT GORDON
IPC: C08F6/06
Filed: 1962-04-16
Abstract: Aqueous polyvinyl alcohol solutions containing 35 to 55 weight per cent of polyvinyl alcohol are produced by a method which comprises feeding a mixture of polyvinyl alcohol and water containing at least 55 weight per cent of polyvinyl alcohol to a continuous mixture having one or more intermediate entry ports between the inlet and outlet, passing said mixture through the mixer and diluting the mixture at one or more of said entry ports with water or an aqueous solution of polyvinyl alcohol in which the concentration of polyvinyl alcohol is lower than in said mixture.  Preferably the mixer is a screw-type extruder, the flight of the screw being arranged so that there is a decompression zone at each intermediate entry port.
Patent GB-771087-A (GB)
Title: Improvements in or relating to mandrels for use in bending hollow rectangular tubes
IPC: B21D9/03
Filed: 1955-05-20
Abstract: 771,087. Flexible mandrels. WESTERN ELECTRIC CO., Inc. May 20, 1955 [May 25,- 1954], No. 14622/55. Class 83 (4). A mandrel for use in bending hollow rectangular waveguides comprises a rigid stem 11 pivotally connected to a flexible or articulated body consisting of first and second terminal links 16, 36 and an intermediate link 26 interposed between the terminal links and connected thereto by means of lugs 28, 27 projecting at opposite sides of the intermediate link 26 and which are pivotally mounted between bifurcations 17, 38 of the first and second terminal links 16, 36, the three links of the flexible body being adapted to support the rectangular tube 47 internally as it is being bent. One side of each of the links used to support the outer wall of the tube is flat and the opposite side concave. Specification 771,089 is referred to.
Patent GB-1533927-A (GB)
Title: Regenerative heat exchanger
IPC: F28D17/04
Filed: 1976-04-09
Abstract: 1533927 Thermal regenerators APPARATEBAU ROTHEMUHLE BRANDT & KRITZLER 9 April 1976 [30 May 1975] 14635/76 Heading F4K In a thermal regenerator of the stationarymatrix, rotary-duct type, purging means for the regenerative mass (more particularly for a sector shaped compartment of the mass) as it moves relatively from a gas stream 8 (e.g. a poisonous or corrosive gas or a gas contaminated, e.g. with dust &c.) into a non-contaminated gas stream 9 comprises the provision at the leading radial edge of the rotary duct 3 of a sluice chamber 6 which at its outlet end communicates with an annular duct 12 with at least one outlet 15 therefrom controlled by a valve 16 whereby the quantity of gas (i.e. gas trapped in a regenerator compartment as it is covered by the mouth of the sluice chamber) withdrawn into the sluice chamber (e.g. by a suction fan 18) can be controlled. 17 is a line through which samples of the contaminated gas may be extracted via the sluice chamber. The annular duct 12 comprises two annular portions 12, 13 respectively joined by a slidable sealing connection 19. The portion 12 is secured to and rotates with the rotary duct 3 and the portion 13 is secured to the stationary inlet 14 of the duct 3.
Patent GB-509360-A (GB)
Title: Manufacture of dyestuffs containing metal
IPC: C09B45/16
Filed: 1938-05-17
Abstract: 509,360. Dyes. SOC. OF CHEMICAL INDUSTRY IN BASLE. May 17, 1938, No. 14692. Convention date, May 19, 1937. [Classes 2 (iii) and 15 (ii)] Chromium complex compounds of azo dyes are made by treating an azo dye of the general formula wherein in R#a benzene residue containing in o-position to the azo group a group capable of binding metal in complex union and containing apart from this group no carboxyl group, with an agent yielding chromium in substance in the dye-bath or on the fibre. The azo dyes may be made by coupling a diazotized o-oxy-, o-alkoxy- or o-carboxyaminobenzene which may be further substituted by halogen, a nitro'or sulphonic acid group, in alkaline solution with perinaphthindandione. The chromium compounds dye wool, silk and leather in various shades. According to examples, perinaphthindandione is coupled with diazotized 6-nitro- 2 - aminophenol 4 - sulphonic acid, 2 - amino - phenol - 4 - sulpliouic acid, 4 - chlor - 2 - amino - phenol - 6 - sulphonic acid, 2 - amino - 1 - car - boxybenzene-4-sulphonic acid, 4-nitro-2-aminophenol-6-sulphonic acid or 2-ammophenot-4 : 6- disulphonic acid and the dyestuff after treated on the fibre or in substance in the chroming agents, e.g. potassium bichromate, chromium formate or chromium sulphate. Red to brown shades are obtained. The Specification as open to inspection under Sect. 91 comprises the treatment of dyes of the above fonmila with an agent yielding metal whose atomic weight does not exceed 58.9. nickel and iron being specified. In an example, the dye from diazotized 4-nitro-2-aminophenol- 6-sulphonic acid is treated with nickel sulphate and sodium acetate. This subject-matter does not appear in the Specification as accepted.
Patent GB-772175-A (GB)
Title: Improvements relating to fertiliser distributing machines
Inventor: MURRAY JOHN BAIRD
IPC: A01C15/00
Filed: 1953-05-27
Abstract: 772,175. Fertilizer distributers. MASSEYHARRIS-FERGUSON (MANUFACTURING), Ltd. May 24, 1954 [May 27, 1953], No. 14719/53. Class 6(1). A gate for use in association with a revolving pan in a fertilizer distributer of the type comprising a long transverse hopper 10 from which fertilizer is supplied to a series of revolving pans 6 supported by bearings on the machine frame is provided with a lateral arm 5b with a pivot 14 spaced away from the lower edge which co-operates with the pan and at a level high above the edge so that when the gate is adjusted the variation for parallelism of the gap between its lower edge and the pan is minimized. The gate is provided with an arm 5c formed with a projection 9 which co-operates with a fitting 13 mounted on a transverse shaft 12 which may be rotated to adjust the position of the gate.
Patent GB-572440-A (GB)
Title: Improvements in and relating to automatic fire arms
IPC: F41A19/33
Filed: 1940-09-30
Abstract: 572,440. Automatic guns. LANCHESTER, G. H., and SOMERS, A. E. Sept. 30, 1940, No. 14738. [Classes 92 (ii) and 119] Relates to trigger-mechanism adjustable for continuous and single-shot fire and of the kind in which a detent 28, Fig. 2, carried by a stoplever 24 engaged by the breech bolt, lifts a trigger-pawl 8 away from the trigger-nose 1a during singe-shot fire, hand-operated means being provided to move the detent sideways away from the trigger-pawl for continuous fire. According to the invention, a rotary changefire cam-faced thumb-button 30 is provided on the trigger-housing 3, the trigger and changefire mechanism forming a complete unit 4 readily removable from the barrel-assembly 40, Fig. 4. The parts are shown adjusted to the position for single-shot fire. The trigger 1 operates the sear 21, Fig. 5, through a spring- controlled trigger-pawl 8 which is raised, to permit the return of the rod 12 and sear 21, by the detent 28 on an outside stop-lever 24, Fig. 2, that has a projection 26 in the path of the breech-bolt. The button 30 has shaped recesses engaging a spring pin 33 to force the button into either of its two positions of adjustment. The button carries on a spindle 29 a cam face 37 which, when the button is adjusted for continuous fire, moves the detent 28 laterally out of the path of the pawl 8 so that sustained pressure on the trigger holds the sear depressed.
Patent GB-214117-A (GB)
Title: Improvements in "water sprinklers"
IPC: B05B3/06
Filed: 1923-06-05
Abstract: 214,117. Todd, W. C., and Pomeroy, J. W. June 5, 1923. Rotary apparatus. - A water sprinkler comprises a rotatable vertical stem 6 receiving a supply of water under pressure and a reaction sprinkler head 14 mounted to rotate about the central stem and receiving water from openings 16. The rotation of the reaction sprinkler 17 drives the central jet 18 through the medium of gear wheels 9, 10, 12, 13. The jet 18 is bent so as to throw water to a greater extent than that delivered from the reaction wheel.
Patent GB-128469-A (GB)
Title: Improvements in Valve Gear for Internal Combustion Engines.
Inventor: SIZAIRE MAURICE
IPC: F01L5/08
Filed: 1917-09-12
Abstract: 128,469. Sizaire, M. Sept. 12, 1917. Addition to 128,299. Valves; valve-gear. - A reciprocating sleeve valve 10 and a concentric beat or lift valve 3 control exhaust and inlet ports respectively, as described in the parent Specification. Both valves are actuated by an overhead shaft 5 which rotates in bearings 7. A cam 4 actuates the inlet valve, and a pair of connecting-rods 9 reciprocates the sleeve valve.
Patent GB-544347-A (GB)
Title: Improvements in or relating to lamps
IPC: F21V37/00
Filed: 1940-10-02
Abstract: 544,347. Night lamps. GEE, W. J. Oct. 2, 1940, No. 14796. [Classes 75 (i) and 75 (iv)] A night lamp suitable also for lighting cigarettes, spills &c. comprises a glass or other jar 1 packed with cotton wool or other absorbent material 10 saturated with paraffin &c. a metal lid 3 threaded on the jar 1 or secured by a bayonet joint, a wick 9 passing through a tube 6 in the lid 3 and embedded in the material 10 and a wind-guard 19. The windguard 19 is made from a perforated sheet metal rectangular blank having gaps cut out of its long sides. The blank is bent about its short axis and the ends of the long sides are soldered together at 11 so that the cut-out portions form openings 12 above the flame allowing the insertion of spills.
Patent GB-431808-A (GB)
Title: Manufacture of alkylated cyclic amidines
Filed: 1934-05-16
Abstract: Cyclic amidines, having an aliphatic residue with more than three carbon atoms attached to the m  carbon but unsubstituted at the N--H group of the heterocyclic ring are prepared by condensing a glyceride of a higher fatty acid with an ortho or peri diamine unsubstituted at the amino groups.  In modifications, the condensation may be effected in the presence of a reducing agent, the glyceride may be simultaneously hydrogenated or ortho or peri diamines may be used as starting material, reduction being effected during the condensation. In examples: (1) o-phenylenediamine is distilled in a current of nitrogen into melted cocobutter and the liberated glycerol removed by distillation in vacuo after condensation has been completed: (2) hardened fish oil and o-phenylene diamine are similarly condensed: (3) olive or linseed oil is heated in the presence of nitrogen with aluminium borings and then condensed with o-phenylenediamine: (4) castor oil is heated with sodium sulphite and condensed with o-phenylenediamine: (5) hydrogen is passed into a mixture of o-nitroaniline, nickel catalyst and cocobutter while heating to effect condensation: (6) hydrogenated fish oil is condensed with 1 : 8-naphthylenediamine to form a pyrimidine: (7) cocobutter is condensed with 1 : 2-naphthylenediamine.  Palm kernel oil, beef and mutton tallow and toluylenediamine are components which are specified.  Specifications 403,977 and 419,010 are referred to.
Patent GB-1262383-A (GB)
Title: Polyesters containing hydroxyl groups and polyurethanes derived therefrom
IPC: C08G63/00
Filed: 1969-03-20
Abstract: 1,262,383. Polyester polyols and polyurethanes derived therefrom. INTER-POLYMER RESEARCH CORP. 20 March, 1969 [22 March, 1968], No. 14830/69. Heading C3R. Polyester polyols are prepared by reacting (A) an oligomer of an #-hydroxycaproic acid or a mixture thereof with the monomeric acid or'(B) a lower alkyl ester of an #-hydroxycaproic acid, an oligomer thereof, or a mixture of monomer and oligomer with (C) a compound having at least two hydroxyl and/or amino groups. The reaction may be carried out using conventional poly-esterification or trans-esterification catalysts, e.g. tetra-alkyl titanates or organo-tin compounds, but when starting material (A) is used a catalyst is not essential. Copolyester polyols may be produced by replacing part of starting material (A) or (B) with a mixture of a polycarboxylic acid and a polyol or with a lactone other than caprolactone, e.g. pivalolactone. Starting material A may be obtained by hydrolysis of an #-caprolactone as described in Specification 1,262,384 and (B) by an analogous acid-catalysed alcoholysis. The polyester polyols produced, especially those having molecular weights in the range 500-2000, may be used to prepare polyurethane elastomers by reaction; using either the "oneshot" or "prepolymer" technique, with a polyisocyanate and e.g. a polyol in known manner. The examples describe the preparation of elastomers from polyesterdiols and copolyesterdiols by reaction with 4,41-diphenylmethane diisocyanate or tolylene diisocyanates to give a prepolymer which is reacted with 1,4- butanediol or 4,4<SP>1</SP>-methylene-bis(2-chloroaniline).