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Showing papers on "Paddle published in 1968"


Patent
05 Nov 1968
TL;DR: In this article, the physical properties of a material were determined by a vibratory material sensing device in which the area of the sensing device is different in a first direction than in a second direction, and a comparison of the vibration in both directions is the measure of the physical property of the material being measured.
Abstract: A method and apparatus for determining the physical properties of a material by a vibratory material sensing device in which the area of the sensing device is different in a first direction than in a second direction and in which the material sensing device is vibrated in the first direction and the vibration measured and is vibrated in the second direction and the vibration measured, and a comparison of the vibration in both directions is the measure of the physical property of the material being measured in which the effect of environmental conditions which would affect the readout are reduced. A material sensing paddle connected to a vibratory rod in which the cross section perpendicular to the axis of the rod is rectangular, having electromagnetic means for transversely vibrating the flexible rod and paddle in a first direction perpendicular to one of the sides of the paddle and at its natural resonant frequency of the element and having electromagnetic means for measuring the natural resonant frequency of the flexible rod and paddle in the first direction, and electromagnetic means for transversely vibrating the rod and the paddle in a direction perpendicular to the first direction and at the natural resonant frequency of the rod and paddle in the second direction, and electromagnetic means for measuring the natural resonant frequency of the rod in the second direction whereby a comparison of the measured natural resonant frequencies in the first and second directions eliminate environmental conditions affecting the natural resonant frequency of the rod.

10 citations


Patent
16 Apr 1968
TL;DR: In this article, a paddle is mounted by resilient rods 68 in blocks 64 mounted on a tension rod 56 which gives the roller an initial curvature prior to application of the load.
Abstract: 1,187,326. Rollers; vibration dampers. MOUNT HOPE MACHINERY Ltd. 21 May, 1968, No. 24055/68. Headings F2S and F2U. Vibration of a heavy roller comprising a stationary hollow axle 10 carrying a rotatable sleeve 12 on fluid bearings 14 or, Fig. 3 (not shown), on roller bearings (76), is damped by a paddle 70 resiliently mounted in the hollow axle. As shown, the paddle is mounted by resilient rods 68 in blocks 64 mounted on a tension rod 56 which gives the roller an initial curvature prior to application of the load. The axle is partially filled with water or other lubricating fluid and the paddle acts to pump the fluid through the clearance between itself and the axle to dampen vibration of the roller. The paddle is tuned to a natural frequency equal to that of the roller. Again, Fig. 5 (not shown), the paddle is mounted on a tension bar 56 at its centre only, tuning masses being mounted at its end. The paddle may be formed as a laminate, e.g. in the manner of a leafspring, and vibrational energy of the roller absorbed additionally by interfacial friction between the discrete layers of the laminated paddle as it vibrates.

9 citations


Patent
25 Jul 1968
TL;DR: In this paper, the case of PADDLE ASSEMBLY in PASSAGEWAY RATCHET MECHANISM includes TEETH CONNECTED for MOVEMENT with PAWL in RELEASABLE ENGAGEMENT with TEETH ARRANGED TO HOLD Paddle ASSEMBLE AT POINT OF MAXIMUM SWING when AIR FLOWING THROUGH PASGAEWAY SWINGS PADDle BLADE AGAINST FORCE OF BIASING DEVICE.
Abstract: SPEEDOMETER COMPRISES CASE HAVING ARCUATE AIR PASSAGEWAY AND INNER CHAMBER WITH SLOT BETWEEN PASSAGEWAY AND CHAMBER, AIR OPENINGS ON CASE COMMUNICATE WITH PASSAGEWAY. PADDLE ASSEMBLY IN CASE INCLUDES PADDLE BLADE IN PASSAGEWAY, ARM CONNECTED TO PADDLE BLADE EXTENDING THEREFROM THROUGH SLOT TO PIVOTAL CONNECTION IN CHAMBER, AND INDICATOR NEEDLE CONNECTED FOR MOVEMENT WITH ARM PADDLE BLADE. BIASING DEVICE URGES PADDLE ASSEMBLY IN DIRECTION OPPOSITE TO DIRECTION OF AIR FLOW THROUGH PASSAGEWAY RATCHET MECHANISM INCLUDES TEETH CONNECTED FOR MOVEMENT WITH PADDLE ASSEMBLY AND PAWL IN RELEASABLE ENGAGEMENT WITH TEETH ARRANGED TO HOLD PADDLE ASSEMBLY AT POINT OF MAXIMUM SWING WHEN AIR FLOWING THROUGH PASSAGEWAY SWINGS PADDLE BLADE AGAINST FORCE OF BIASING DEVICE.

8 citations


Patent
09 Dec 1968

8 citations


Patent
11 Oct 1968

8 citations


Patent
13 Dec 1968
TL;DR: In this article, a device capable of being remotely controllable to measure the strength of the SEDIMENT in an aquatic environment is described, where a CONSTANT TORQUE is created by a MOTOR THROUGH a KINETIC ENERGY DEVICE, SUCH AS SPRING VANES, into a PADDLE on the end of a OIL PRESSURized SHAFT.
Abstract: A DEVICE CAPABLE OF BEING REMOTELY CONTROLLED TO MEASURE THE SHEAR STRENGTH OF SEDIMENT IN AN AQUATIC ENVIRONMENT IS DISCLOSED. A CONSTANT TORQUE IS INDUCED BY A MOTOR THROUGH A KINETIC ENERGY DEVICE, SUCH AS SPRING VANES, INTO A PADDLE ON THE END OF A OIL PRESSURIZED SHAFT. WHEN THE BOTTOM SEDIMENT RESISTS THE TORQUE THE POTENTIOMETER MONITORS THE RELATIVE ROTATION BETWEEN THE MOTOR ROTATION AND THE SHAFT PADDLE. THE TORQUE APPLICATION RATE, THE YIELD POINT, THE STRAIN RATE, AND THE ULTIMATE SHEAR OF THE SEDIMENT CAN BE RECORDED.

6 citations


Patent
20 Jun 1968
TL;DR: In this article, the attachment surface of an axial flow machine with a paddle part and an attachment surface which are simultaneously shaped in two molds is described. But the attachment surfaces do not have a fixed angle.
Abstract: Blades which are to be attached to the blade wheel of an axial flow machine, have a paddle part and an attachment surface which are simultaneously shaped in two molds. One of these molds shapes the paddle part in the desired manner while the other mold imparts the final shape to the attachment surface. Then the two molds with the blade still clamped in them are twisted to produce the desired blade angle.

6 citations


Patent
28 May 1968

4 citations


Patent
06 Jun 1968
TL;DR: In this article, a bucket wheel for reclaiming machines is described with reference to Fig. 5 thereof, and claims are directed to the bucket wheel described in Specification 1,116,428.
Abstract: 1,116,429. Bucket wheel for reclaiming machines. GENERAL ELECTRIC CO. Ltd. 22 March, 1966 [22 March, 1965], No. 55896/67. Divided out of 1,116,428. Heading B8E. [Also in Division E1] A reclaiming machine as disclosed in Specification 1,116,428, but the claims are directed to a bucket wheel described with reference to Fig. 5 thereof.

3 citations


Patent
20 Mar 1968
TL;DR: In this paper, a cylindrical container partially filled with steel balls, and a paddle wheel rotatable about a normally vertical axis disposed so that the paddles are either partially immersed in the balls or lie just above the balls, tending to rotate it, such that, in the former case, the paddle wheel is normally prevented from rotating but can rotate on the occurrence of more than a predetermined amount of vibration or other physical change which affects the forces resisting relative movement between the particles.
Abstract: 1,106,458. Safety devices for lifts. S. DAVALL & SONS Ltd. 30 March, 1965 [2 Oct., 1964], No. 40308/64. Heading B8L. [Also in Divisions B7, F2 and G1] A device which is adapted to either arrest or release a movable control member on the occurrence of a predetermined amount of vibration, change in gravitational force (owing to acceleration or deceleration), temperature, pressure &c. consists of a cylindrical container partially filled with steel balls, and a paddle wheel rotatable about a normally vertical axis disposed so that the paddles are either partially immersed in the balls or lie just above the balls, a biasing force being applied to the paddle wheel, tending to rotate it, such that, in the former case, the paddle wheel is normally prevented from rotating but can rotate on the occurrence of more than said predetermined amount of vibration or other physical change which affects the forces resisting relative movement between the particles, or, in the latter case, the paddle wheel rotates under-the biasing force until such vibration &c. exceeds the predetermined amount whereby the balls obstruct the paddles and arrest them. The device may be used to operate a lift safety device when the lift reaches a predetermined degree of free fall, at which the gravitational reactions between the balls and the container may be arranged to be reduced sufficiently to allow rotation of the paddle for this purpose. Other applications of the device are also referred to (see Divisions B7, F2 and G1).

1 citations