Abstract: A sewing machine presser foot lubrication system which includes apparatus to directly supply a lubricating fluid to the underside of a presser foot. The apparatus includes a small lubricant flow tube attached to a forwardmost underside portion of the presser foot. By such direct attachment of the lubricant flow line to the presser foot, a more effective lubricating function between the presser foot and a work piece is achieved. The apparatus further consists of a lubricant reservoir and the appropriate valving to control the lubricant flow rate therefrom. The flow tube is in two sections wherein a flexible second portion can be quickly disconnected from a rigid first portion which is integral with the presser foot.

Abstract: Modified beta interferons containing amino acid substitutions in the beta interferon amino acids 80 to 113 are described. These modified beta interferons exhibit changes in the antiviral, cell growth regulatory or immunomodulatory activities when compared with unmodified beta interferon.

Abstract: Human interferons containing novel cysteine substitutions and disulfide bonds are disclosed. The amino acid sequence of a first interferon is combined with the cysteine and/or disulfide pattern of a second interferon resulting in a molecule with hybrid properties.

Abstract: Modified beta interferons containing amino acid substitutions in the beta interferon amino acids 115 to 145 are described. These modified beta interferons exhibit changes in the antiviral, cell growth regulatory or immunomodulatory activities when compared with unmodified beta interferon.

Abstract: Modified beta interferons containing amino acid substitutions in the beta interferon amino acids 1 to 28 are described. These modified beta interferons exhibit changes in the antiviral, cell growth regulatory or immunomodulatory activities when compared with unmodified beta interferon.

Abstract: A synthetic gene characterised in that it codes for the expression of urogastrone or a sub-unit thereof is disclosed.The production thereof by the assembly and ligation of a number of nucleotide blocks is also disclosed, as are corresponding plasmid recombinants, transformed cells and the production thereof.The expression of urogastrone is further disclosed.Urogastrone is a polypeptide hormore (protein) which may be isolated in small amounts from human urine. It has an application in the treatment of ulcers and in the promotion of wound healing. The present invention provides a more viable commercial production.

Abstract: An optical fiber cable employs a central strength member fabricated from a dielectric material which member is surrounded by a plurality of peripheral tubes each having a hollow loosely containing an optical fiber. The tubes are fabricated from a plastic having embedded therein glass fibers to offer additional strength to the tubes to thereby permit a substantial reduction in the cross-section of the central support member which now serves in conjunction with the tubes to provide strength to the overall cable.

Abstract: A strength member is paid off from a neutralizer payoff in such a manner that the strength member is rotating. A tape having longitudinal grooves is paid off from a fixed payoff and passed through a forming die. The strength member is also passed through the forming die, and the tape is there applied to the exterior of the strength member. As a result of the rotation of the strength member, the tape obtains a helical lay about the strength member. An optical fiber is paid off from a neutralizer payoff and laid into a groove on said tape. An outer tape may be helically laid over the corrugated tape and a filling compound may be applied under and over the grooves of the corrugated tape. A binder may be provided to secure the outer tape over the fiber.

Abstract: A self-advancing, hydraulically powered mine roof support comprises a base means, a double-acting hydraulic advancing ram extending in the intended direction of advance of the support in use, the cylinder of the advancing ram being located towards the forward end of the support and the piston rod of the advancing ram being located towards the rearward end of the support, a lifting ram mounted on the support at or towards the forward end thereof and being operable on the periphery of the cylinder to lift the forward end with respect to the cylinder, the end of the cylinder remote from the piston rod being connectable to a pan of an armoured conveyor, and the advancing ram being connected to the support by an inclined link means pivotally attached to the base means and to the piston rod.

Abstract: A flexible film laminate, according to the invention, can be applied directly to the cardboard tubing of dry cell batteries during the manufacture of same.In a preferred arrangement the laminate comprises, a first layer of a plastics film 1, a second layer of discrete areas of colored pigments 2, a third layer of adhesive 3, a fourth layer of a metallic deposit 4 on the surface of a fifth layer, said fifth layer of a plastics material 5, a sixth layer of adhesive 6, a layer of finely divided clay mineral particles 7, a layer of bleached kraft paper 8 and a final layer of uncured heat sensitive adhesive 9.

Abstract: A mine roof support comprises a plurality of hydraulically extensible chock legs 5,6, articulated at upper ends thereof to one or more roof beams 3 and at lower ends thereof to one or more base members 1, a shield 9 pivotally connected to a rearward part of the base member 1 and also pivotally connected to a rearward part of the roof beam 3, with permanently pressurized rams 12 both located between a pair of laterally spaced chock legs 6 and one located to each side of the center line 19 of the support, the rams being mutually inclined with respect to the center line 19 and reacting via the shield 9 on the roof beam 3, and a pair of tie bars 11 located one at or towards each side of the support and both connected between the roof beam 3 and the shield 9.

Abstract: Disclosed is an applicator for the application of liquid to webs and methods of using it. A web-guide path is defined through the applicator and has an intermediate enlargement. One or more inlets and one or more outlets are provided at the exterior of the applicator and at the enlargement respectively, which are part of a closed passageway system for the supply of liquid to the enlargement. A slit-like passageway system affords passage of web to the enlargement. An exit passageway with one outlet affords passage of web, to which liquid has been applied, from the enlargement out of the applicator. Means are provided for changing characteristics of the exit passageway whereby selectively to influence the application of liquid to the web. By using such an applicator in which provision is made for changing the size or shape, or both, of the exit passageway, considerable control may be exercised over both the degree of impregnation of the liquid into the web and the thickness of liquid coating on the web.

Abstract: A control system for a hydraulically powered self advancing mine roof support, which system ensures that a hydraulically extensible chock leg of the support is set to a predetermined pressure, irrespective of the length of time that a main inlet valve is held open comprises an auxiliary valve interposed between a main valve and a chock leg(s) in a fluid supply line extending from a high pressure line to the support, a bypass line connected to the high pressure line in advance of the main valve and extending to the auxiliary valve, the auxiliary valve being so constructed as to open upon sensing a predetermined pressure and to close upon sensing a higher predetermined pressure.

Abstract: The invention relates to an improvement in a lift truck comprising a first eye structure adjacent a front end of the truck and supported by the truck frame along with a second eye structure adjacent a rear end of the truck and supported by the truck frame. The first and second eye structures are substantially equally spaced from the center of gravity of the truck. An overhead guard structure is supported at a rear end thereof by the second eye structure and at the front end thereof by the truck frame.

Abstract: A light-fugitive dye is added to silicon-containing priming compositions to aid in the application of the priming compositions to a surface and to aid in the application of silicon-containing coating compositions over the primed surface before becoming colorless in the presence of light.

Abstract: A light-fugitive dye is added to silicon-containing priming compositions to aid in the application of the priming compositions to a surface and to aid in the application of silicon-containing coating compositions over the primed surface before becoming colorless in the presence of light.