baber/WOPTO huggingface dataset:
Patent CA-1054818-A (CA)
Inventor: STERLING VAUGHN C
IPC: F21K5/12
Filed: 1976-03-17
Granted: 1979-05-22
Abstract: MULTIPLE FLASHLAMP SYSTEM                   ABSTRACT OF THE DISCLOSURE      A multiple photoflash system is provided which employs a high voltage type flashlamp construction, including a shorting primer material.  Said primer mat-erial is converted to a conductive residue upon igni-tion of flashlamp to provide a short circuit path between spaced apart inleads of the lamp.  Further series connec-tion of the individual lamps in the flashlamp system which are operatively associated with switching devices to provide an open circuit condition upon flashing of the associated lamps permits sequential flashing. The particular primer material which enables the flashlamp system to be operated in this manner comprises a solid mixture of a combustible metal fuel and an oxidizer for the fuel such as alkaline metal chlorates and perchlor-ates, and which further contains particular proportions of various combustion supporting oxides.
Patent CA-1081308-A (CA)
Inventor: BERKOWITZ AMI E
IPC: G03G19/00
Filed: 1976-04-01
Granted: 1980-07-08
Abstract: ABSTRACT OF THE DISCLOSURE           A recording head array for magnetic printing machines comprises a flat sheet pole spaced from a line of magnetic pin poles.  Spaces between image elements recorded by adjacent pin poles are thereby reduced.  The sheet pole may be magnetized to provide a direct magnetic bias field.
Patent CA-1054884-A (CA)
Inventor: MILLER LARRY E
IPC: F41B7/08
Filed: 1976-05-06
Granted: 1979-05-22
Abstract: ABSTRACT OF THE DISCLOSURE     A plastic pistol shaped toy dart gun having a barrel with a non-circular muzzle opening for a suction cup ended dart shaft having a cooperating cross section with that opening; which barrel houses a helical compressible dart ejecting spring and has extending along the side of the barrel, the longer leg of an L-shaped trigger pivoted centrally of this leg.  This trigger has a hook at the outer end of this longer leg for engaging a notch in the shaft of the dart for cocking the gun, and at the inner end of the longer leg a spring side engagable portion for insuring engagement of the hook when the proper dart is properly inserted into the gun.  The barrel also contains opposite this spring engagable portion on the trigger, a spring deflector cam to urge the compressed spring against this engagable portion of the trigger for further insuring engagement of the hook into the notch in the dart's shaft for cocking the gun.
Patent CA-1074918-A (CA)
Inventor: FAHEY WILLIAM D
IPC: G06V10/34
Filed: 1976-06-15
Granted: 1980-04-01
Abstract: ABSTRACT OF THE DISCLOSURE     Symbols from printed labels are imaged onto a photorespon-sive matrix.  The matrix is scanned, column by column, to provide a digital data stream characteristic of the symbol with a bit corresponding to each matrix element.  Each matrix element is examined by a decision-making device to determine what the state of the subject element should be based on the actual states of a group of examination elements adjacent to the subject element.          The makeup of the examination group and the specific algorithm of the hardware (or software) will vary with each type of applica-tion.  The examination group for a character stroke widener (Fig. 2 and 3) is formed by seven matrix elements:  the subject element, plus the three immediately previously scanned elements in the same column as the subject element, plus the three elements in the same row as the subject element in the three immediately previously scanned columns.  A stroke-widening algorithm widens the symbol stroke width by one bit if the stroke width is either one or two elements wide.  The symbol stroke is widened to promote character recognition by the "peep hole" or fine encoding point technique.
Patent CA-1049827-A (CA)
Inventor: ETTISCHER HELMUT
IPC: G03B17/42
Filed: 1976-06-21
Granted: 1979-03-06
Abstract: SHUTTER RELEASE BLOCKING DEVICE FOR           FOLDABLE CAMERA                ABSTRACT OF THE DISCLOSURE     A blocking device in a foldable camera blocks the shutter release button to prevent an undesired exposure whenever the camera is folded and throughout each film transport cycle.  The device is moved into blocking relationship with the release button in re-sponse to movement of a camera cover member to its closed position and in response to initiation of the transport cycle.  The device is then moved out of said blocking relationship upon movement of the cover member from its closed position and upon completion of said cycle.  The device includes a pivotable member bearing a blocking element and two sensing elements.  One sensing element is actuable by closure of the cover member; the other sensing element is actuable by movement of a timing cam that rotates one revolution in synchronism with the transport cycle.  The block-ing element moves into the path of the release button whenever either sensing element is actuated.  The device is especially useful in a foldable processing camera, wherein the film trans-port may be motorized.
Patent CA-1091348-A (CA)
Inventor: BORNE JEAN P
IPC: G11B5/012
Filed: 1976-07-06
Granted: 1980-12-09
Abstract: ABSTRACT:         A method of recording and reproducing audio information on a disc shaped record carrier. During recording the audio information is divided into con-secutive information segments of a duration ?t. Each information segment is subjected to time compression before recording. The duration ?t and the time com-pression are selected so that optimum use is made of the recording capacity of the record carrier without information loss. During reproduction the information segments are subjected to a complementary time expansion and recombined in their original sequence.
Patent CA-1068722-A (CA)
Inventor: KANE JAMES
IPC: C07C231/00
Filed: 1976-08-09
Granted: 1979-12-25
Abstract: ABSTRACT OF THE DISCLOSURE           Dry acrylamide is produced by reacting acrylonitrile with from 0.3 to 1 mole of water in the presence of a metallic nitrile conversion catalyst.  The reaction is conducted under conditions of pressure and temperature to convert at least 30% by weight of the nitrile to acrylamide.  This reaction produces a solution of acrylamide dissolved in nitrile which then is either treated by means of cooling or pressure reduction to precipitate acrylamide crystals from the reaction mixture, which crystals are then recovered.
Patent CA-1068791-A (CA)
Inventor: LEVITT CHARLIE M
IPC: B23H7/02
Filed: 1976-09-03
Granted: 1979-12-25
Abstract: ABSTRACT  OF  DISCLOSURE            A method of cutting a material, which may be insulating or conducting, which includes the steps of placing a pair of parallel spaced electrodes, preferably taking the form of a pair of wires, close to or in contact with the material, applying a voltage across the electrodes and causing relative movement between the electrodes and the material as the spark erodes the material to effect the cut.    The invention also provides apparatus for carrying out this method.
Patent CA-1066758-A (CA)
Inventor: OYAMA HAZIME
IPC: G03G21/10
Filed: 1976-10-12
Granted: 1979-11-20
Abstract: Abstract of the Disclosure Charging, imaging, developing and transfer units are operatively arranged about the circumference of a rotary photoconductive drum, the developing unit comprising a magnetic brush.  A discharge unit is disposed between the transfer unit and the developing unit and comprises a light source and a corona discharge element to simultaneously illuminate the drum causing photoconduction and expose the drum to an electric field thereby neutralizing any residual charge on the drum and residual toner particles remaining on the drum after the transfer operation.  The residual toner is subse-quently removed by the magnetic brush of the developing unit.
Patent CA-1138026-A (CA)
Inventor: D ENTREMONT JOHN R
IPC: H01H37/52
Filed: 1976-12-20
Granted: 1982-12-21
Abstract: Abstract of the Disclosure A combination starting and protecting device particularly useful with split phase motors such as those used with refrigeration compressors is disclosed in which an element of material having a positive temperature coefficient (PTC) of resistivity characteristic and a thermally respon-sive switch are disposed in the same housing.  A thermal coupling of a preselected value between the PTC element and the thermally responsive switch is provided so that a desired reset or "off" time is obtained for the thermally responsive switch without affecting the "on" time.
Patent CA-1116785-A (CA)
Inventor: VON BONIN WULF
IPC: G03C8/54
Filed: 1977-01-14
Granted: 1982-01-19
Abstract: ABSTRACT OF THE DISCLOSURE           A restraining layer capable of retarding the diffusion of hydroxyl groups is of particular use in a neutralization system for the dye diffusion transfer process.  The restraining layer of the invention comprises a film-forming linear poly-mer consisting of alternating hydrophilic and hydrophobic segments joined to one another by carbonate, urethane and/or ester groups.  The neutralization system provides retarded reduction of pH in the photographic material.
Patent CA-1097037-A (CA)
Inventor: NIEDECKER HERBERT
IPC: B65D33/30
Filed: 1977-01-25
Granted: 1981-03-10
Abstract: ABSTRACT OF THE DISCLOSURE            A U-shaped clip intended for closing a gathered end portion of a bag or a flexible tube comprising : a web connecting two limbs, forming together the U-shaped clip, means comprising two beads integrally and parallely connected to the web and limbs, and continuously running along two lines which are located respectively inwardly with respect to each side edge of the web and the limbs.  The beads are formed by inwardly flanging the side edges of the web and limbs, the beads projecting inwardly toward the bag or the flexible tube, said beads being spaced apart by a flat portion and forming between themselves a space for receiving the gathered end portion of the bag or flexible tube.
Patent CA-1075327-A (CA)
Inventor: CORDELL ROBERT R
IPC: G01R19/165
Filed: 1977-01-25
Granted: 1980-04-08
Abstract: WINDOW COMPARATOR  Abstract of the Disclosure A family of window comparator circuits are arranged to monitor differential input signals and indicate when the difference between the signals is between two limits.  Each of the window comparator circuits includes an input circuit having at least one current source.  The input circuit is responsive to a differential input signal for conducting two dependently variable currents through an output circuit.  At least one voltage dropping element is connected to each current source in the input circuit for establishing the limits of the window comparator.  The output circuit responds to changes in the ratio between the two currents conducted therethrough for indicating that the differential input signal is between the two limits.
Patent CA-1100991-A (CA)
Inventor: MEYER WILLY
IPC: A01N53/08
Filed: 1977-02-14
Granted: 1981-05-12
Abstract: Abstract of  the Disclosure Cyclopropanecarboxylic acid esters of the formula   wherein X and Y each represent chlorine, fluorine or bromine, R1 represents C1-C5-alkyl, and R2 represents hydrogen or methyl, processes for producing them and their use in combating pests.
Patent CA-1115063-A (CA)
Inventor: BARJHOUX JEAN
IPC: C25B1/36
Filed: 1977-04-07
Granted: 1981-12-29
Abstract: Procédé de récupération de mercure purifié à partir de mercure contenant des impuretés métalliques, ou de beurres de mercure produits au cours de l'électrolyse des métaux alcalins par le procédé d'électrolyse à cathode de mercure, consistant en une oxydation par du peroxyde d'hydrogène des métaux contenus dans le mercure souillé.
Patent CA-1070154-A (CA)
Inventor: GOLDMACHER HOWARD K
IPC: G03B17/00
Filed: 1977-04-12
Granted: 1980-01-22
Abstract: ABSTRACT OF THE DISCLOSURE:            A device for providing means enabling a user to rewind a partially-exposed film strip packaged in a film cassette, to then remove the cassette from the camera, and thereafter to reinsert the film into the camera with the assurance of correct registration of the previously-exposed frames with the shutter opening and with the camera frame counter.  This invention also pertains to the method of modifying the film strip to form the device.  One embodi-ment of the device is a small, rectangular laminated tab having a body of flexible plastic material formed into a compressible hook at one and, which tab is installed near the tongue end of the film either by the user or by the film manufacturer.  The bottom lami-nation of the tab is of self-adhesive material for adhering the tab to the tongue end of a film strip and the top lamination is a decalcomania having film index marks and a set of numerals at least equal to the number of exposure frames of the film printed thereon, the numerals being of a rub-off nature.  When the tab is properly installed on the film tongue end, installed in a camera, and the index marks aligned with the camera drive sproket teeth, a desired number of exposures is then made.  The film can then be rewound into the cassette with the tab hook preventing rewinding of the tongue into the cassette, the cassette removed from the camera, and the last exposed frame number recorded by rubbing off the corresponding numeral from the decalcomania.  Subsequently, the cassette can be reinstalled in the camera, the index marks realigned with the drive sproket teeth, and the film accurately advanced to the next unexposed frame.
Patent CA-1079754-A (CA)
Inventor: SIMEONOV YORDAN T
IPC: C04B38/00
Filed: 1977-06-14
Granted: 1980-06-17
Abstract: ABSTRACT OF THE DISCLOSURE:           A method for the production of cement ordinary Portland cement and an expansive admixture, wherein Portland cement and an expansive admixture containing, in weight percent based on the total weight of the cement composition, 2 to 8% bialuminium pentahydroxychloride, 4 to 15% gypsum and, optionally, up to 7% lime are dry mixed and homogenized.  According to this simple method, the expansion comes to an end at the early stage of hardening, thus resulting in volume stability and high strength.
Patent CA-1084639-A (CA)
Inventor: BOEHNKE BOTHO
IPC: C02F3/02
Filed: 1977-08-25
Granted: 1980-08-26
Abstract: ABSTRACT OF THE DISCLOSURE         A two-stage sludge process for the purification of sewage.          The process is less sensitive than those of the prior art but, never-theless, succeeds in reducing the aeration time.         The sewage is supplied to a higher loaded first activation stage, the sewage treated therein undergoes an intermediate settlement accompanied by the removal of sludge in the form of return sludge and surplus sludge, the intermediately settled sewage is fed to a lower loaded activation stage compared with the first activation stage and following final settling the material therefrom is drained off in pure form, wherein all the sewage is fed to a first aerated activa-tion stage which is operated as a maximum load stage with a space load BR of approximately 10 kg BOD5/m3/day and a sludge load BTS of at least 2 kg BOD5/kg of dry substance/day, by intermediate settling of the sewage sludge mixture removed from the first stage a strict separation of the biocenoses of the two activation stages is ensured, whereby sufficient surplus sludge is removed from the intermediate settling stage that the age of the sludge is kept low, the inter-mediately settled sewage being fed to a second aerated activation stage which is operated as a low load stage.
Patent CA-1064370-A (CA)
Inventor: SATO MASAO
IPC: B23D55/06
Filed: 1977-09-07
Granted: 1979-10-16
Abstract: ABSTRACT OF THE DISCLOSURE           A bandsaw wheel for use in a horizontal bandsaw includes a peripheral surface about which, in use, a bandsaw blade may extend.  The peripheral surface has thereon means defining a plurality of annular resilient members.  These members are spaced apart axially from one another and extend around the peripheral surface of the wheel and are radially outwardly directed relative thereto.  The annular members are arranged to contact the bandsaw blade during use and to hold same clear of contact with said peripheral surface thereby to reduce vibration of the bandsaw and slippage thereof on the bandsaw wheel during operation.
Patent CA-1055776-A (CA)
Inventor: BASTGEN WENDEL
IPC: B30B9/20
Filed: 1977-10-12
Granted: 1979-06-05
Abstract: ABSTRACT OF THE DISCLOSURE            There is disclosed a device for dewatering sludge such as residuals in sewage discharge processing installations comprising a device for dewatering sludge in the form of cakes, said device comprising in combin-ation:  a first rotary dewatering drum having a porous circumferential wall and a second rotary dewatering drum also having a porous circumferential wall disposed side-by-side of said first drum, said drums being rotatable in opposite directions; two parallel spaced apart filter bands for supporting and conveying sludge cakes placed therebetween, said filter bands being guided about part of the circumferential wall of the first drum for conveying the bands in the rotational direction of the first drum and also guided about part of the circumferential wall of the second drum for conveying the bands in the rotational direction of the second drum and thus in opposition to the moving direction of the bands while being conveyed about the first drum.  This device better overcomes the prior art problem of insufficient break-up of the sludge during the dewatering operation.
Patent CA-1070611-A (CA)
Inventor: BUTLER ROGER M
IPC: E21B36/00
Filed: 1977-11-15
Granted: 1980-01-29
Abstract: ABSTRACT OF THE DISCLOSURE         Disclosed is a method for recovering hydrocarbons from a hydrocarbon-bearing formation.  A wellbore is drilled to penetrate the formation and to extend, preferably substantially horizontally, into the formation for a suitable distance.  The well is completed with a slotted or perforated casing means and with dual concentric tubing strings.  The tubing strings comprise an inner tubing and a surrounding larger diameter outer tubing.  The inner tubing cooperates with the outer tubing to form a first annular space and the outer tubing cooperates with the casing means to form a second annular space.  After the wellbore is suitably completed, a heated fluid is circulated within the casing means such that the heated fluid passes through a portion of the first annular space to heat the well and to provide a fluid flow path through both the first and second annular spaces.  After the well is suitably heated, a heated fluid is injected into the formation through at least a portion of the second annular space. Subsequently, formation hydrocarbons are produced from formation by means of the well.
Patent CA-1070459-A (CA)
Inventor: LOSERT GERHARD K
IPC: D06F39/12
Filed: 1977-12-02
Granted: 1980-01-29
Abstract: ABSTRACT OF THE DISCLOSURE     A self-locking support mechanism for leveling an appliance relative to the floor that includes a support member secured to the appliance and having at least one end wall and one side wall with the side wall having a slot therethrough.  There is also provided a rotatable cam member having a pivot point, a cam surface to contact the floor for height adjustment, and a radius surface relative to the pivot point.  The cam member rotates by a pin through the pivot point and the slot in the support and the pin is slidably movable within the slot.  The slot and support end wall are spaced from each other and converge toward each other in a direction away from the floor.  Upon rotating the cam member the pin is moved within the slot away from the floor and the cam member radius surface abuts the support end wall to lock the cam member.
Patent CA-1083532-A (CA)
Inventor: COLLINS HERBERT
IPC: B65D41/26
Filed: 1977-12-06
Granted: 1980-08-12
Abstract: CUP FOR USE WITH BOTTLE     ABSTRACT OF THE DISCLOSURE   A cup for use with a bottle is disclosed in a preferred embodiment to cover a threaded bottle cap having a roughened outer surface and is formed with a plurality of inwardly projecting ribs which force-fit into engagement with the roughened surface of the bottle cap.  At least two of the ribs are formed with a projecting seat for securing over the bottle cap. When the cup is seated in position on the bottle cap, the cup and bottle cap may be rotatably displaced as a unit to unscrew the bottle cap from the bottle. The cup can be separated from the bottle cap while the bottle cap remains on the bottle by pulling the cup away from the bottle cap, thereby allowing the bottle cap to be removed separately from the bottle.
Patent CA-1117895-A (CA)
Inventor: KRUMPELT MICHAEL
IPC: C25B1/46
Filed: 1977-12-14
Granted: 1982-02-09
Abstract: ABSTRACT OF THE DISCLOSURE:                In a process wherein an aqueous alkali metal chloride solution is electrolyzed in an electrolytic cell having an anode compartment containing an anode and anolyte and a cathode compartment containing a cathode and cath-olyte and a substantially fluid impervious selectively per-meable barrier separating the anode and cathode compartments and wherein the alkali metal chloride solution is contin-uously circulated through the anode compartment, the im-provement comprising reducing chlorate formation in the anolyte by introducing an alkali metal chloride solution into the anode compartment and operating the cell at an alkali metal chloride conversion factor of between 40% and 80% and adding water or removing alkali metal hydroxide from the cathode compartment so as to maintain an alkali metal hydroxide concentration of about 15 percent to about 20 percent by weight.
Patent CA-1121380-A (CA)
Inventor: STEINBERG DAVID H
IPC: C08K5/372
Filed: 1977-12-28
Granted: 1982-04-06
Abstract: Case 3-10904/GC 805/+ Canada Hindered phenol hydrazones and compositions stabilized therewith Abstract of the Disclosure Hindered phenol hydrazones of the formula   wherein R1 and R2 are alkyl of 1 to 8 carbons or R1 can also be hydrogen, n is 1 to 6, R' is hydrogen or alkyl, R3 is alkyl, phenyl, substituted phenyl, alkylenethioalkyl or alkylenethioether ester of a carboxylic acid or a group   where T is a direct bond, alkylene, sulfur or oxygen interrupted alkylene or phenylene, said compounds being useful as diene rubber stabilizers.
Patent CA-1105198-A (CA)
Inventor: STIGLIANI GIUSEPPE
IPC: C08F8/48
Filed: 1978-01-11
Granted: 1981-07-14
Abstract: ABSTRACT OF THE DISCLOSURE Cyclized polydienes devoid of crosslinked fractions are prepared by polymerizing conjugated diolefins in solution in n solvent consisting of a mixture of saturated hydrocarbons with 20-95% by weight, with respect to the mixture, of chlorinated saturated hydrocarbons, in the presence of from 0.1 to 10 moles for each 100 moles of diolefins, of a catalyst of the formula RnA1 C13-n' where R is an alkyl radical with 1-6 carbon atoms and n is from 1 to 1.5.  These cyclized polydienes can be used in coating formulations.
Patent CA-1068989-A (CA)
Inventor: RUSSELL RICHARD
IPC: D05B1/02
Filed: 1978-02-16
Granted: 1980-01-01
Abstract: STITCH SHORTENING AND TACKING ASSEMBLY     ABSTRACT OF THE DISCLOSURE            A stitch shortening and tacking assembly for use in a sewing machine is provided.  The shortening and tacking assembly is particularly suited for use with a sewing machine wherein a fabric is advanced between a presser foot and a platten disposed in a first feeding position by a reciprocating feeder that is synchronized with respect to a rib and sewing needle.          The sewing needle is synchronized with respect to the feeder and rib to stitch the fabric after the web has been advanced by the feeder. The platten is adapted to be displaced from the feed position to a stitch shortening position whereby the web is advanced through a shorter interval between sewing operations to thereby shorten the length of each stitch effected thereby.  The platten is further adapted to be displaced from the stitch short-ening position to a stitch tacking position whereby a portion of the platten is biased against the presser foot to thereby prevent the fabric from being advanced between sewing operations.