Abstract: A predetermined symmetrical pattern is sewn on a canvas by applying a flexible adhering sheet having printed thereon indications of a gridwork corresponding to the gridwork of the canvas. The flexible sheet is of substantially smaller area than the canvas and indicates STITCHES and paths to be followed. The edges of the flexible sheet gridwork are aligned with the canvas gridwork while they are joined together. The canvas is then sewn with a first set of stitches to establish paths and STITCHES illustrated by the paths on the flexible sheet. The flexible sheet is removed and a second set of stitches is sewn to complete the paths established by the first set of stitches.

Abstract: Apparatus for transporting flowable particulate material including a container for receiving the material and having a material receiving chamber and a material inlet, and a gas inlet chamber with a gas inlet, the two chambers being separated by a porous wall, a material outlet, a pressure sensor in the material receiving chamber and a valve operated by the sensor when a predetermined pressure occurs in the material receiving chamber for opening said material outlet, the material outlet including a conduit between the material receiving chamber and a location external to the container, one end portion of the conduit being movable relative to another portion thereof to provide a predetermined spaced relationship between the end portion of the conduit and the porous wall, the gas inlet chamber being separated into two parts by a gas inlet compartment depending within the chamber from the porous wall and two manually adjustable control valves for controlling the supply of gas to the chamber and compartment respe

Abstract: Apparatus and method for measuring the surface temperature of an item in a furnace utilizing radiation detection from the item and from a cooled reference plate. The radiation signals derived from the hot item and the cooled reference plate, both of which are positioned in the furnace, are subtracted to provide an output signal which is representative of the item's surface temperature. The reflectance of the hot item and the cooled reference plate are selected to be approximately equal. The reference plate is maintained at a temperature at which it will emit insignificant radiation. When the reflected radiation from the hot item and the cooled reference plate are equal, the difference in radiation received by radiation detection pyrometers will be the radiation emitted by the hot product. The pyrometer outputs, which are subtracted, will accurately represent the hot steel temperature even for changing furnace conditions.

Abstract: A method and apparatus for recording sequences of successive television images on cine film and particularly color images on conventional motion picture film including the steps of converting an analogue television signal to a digital signal comprising a chain of "bits," storing the "bits" in a storage device having the capacity to store a complete television picture under the control of timing signals, applying timing pulses of a different frequency to the storage device to empty the storage device at a faster rate than that required to fill the same to reduce the duration of each frame with consequent increase in the blanking interval to a value such as to accommodate the pull-down mechanism of a film camera.

Abstract: A jockstrap is provided for holding a protective device in place on a human body. The protective device is a rigid cup having sufficient volume to enclose the male genitals. The protective device, when positioned properly, extends from the area above the male genitals, underneath the abdomen to a point in the vicinity of the wearer's rectum. The jockstrap includes a waist band, two straps attached to the waist band and a pouch for holding the protective device attached to the waistband and the two straps. The pouch extends from an area above the wearer's genitals, below the wearer's abdomen, to a point near the wearer's rectum. The jockstrap holds the protective device against the wearer's body in such a manner that the wearer's genitals are protected from blows from any direction.

Abstract: A leg stretching exercise device is provided which has two platforms, each adapted to support a foot of an exerciser. Each platform is provided with ball casters which provide support and allow free movement in a mutual plane. The platforms are attached so they may be placed in touching relationship and moved apart a predetermined distance by the exerciser. A rope connects a single point on each platform. The connecting rope defines a loop which passes through eyelets, secured to each platform. An adjustable connection is provided for varying the size of the loop as desired.

Abstract: A composition for use in forming an asbestos free friction element includes a cross-linkable polymeric binder and glass fibers with a sufficient amount of an infusible organic fiber to mitigate the aggressive behavior of the friction element during operation.

Abstract: A traffic control marker for use with an asphaltic pavement including a rigid plate having a top indicating surface and a bottom surface adapted for contact with the asphaltic pavement and a continuous rigid flange which depends from the peripheral portion of the rigid plate. The continuous rigid flange is adapted for embedment in the asphaltic pavement to a depth at which the top indicating surface of the rigid plate is flush with the top surface of the surrounding asphaltic pavement. The rigid plate is provided with vent holes to assure uniform contact between the bottom of the rigid plate and the asphaltic pavement when the traffic control marker is installed in place. In the preferred form, the continuous rigid flange depends from the rigid plate at an angle of about 90.degree. to the plane of the rigid plate, but may depend at other angles if greater gripping action of the continuous rigid flange is desired.

Abstract: A power controller having a plurality of power output modules which can be added or removed as desired to change the power output rating. The electrical output of the individual power modules are removably attached to an output combining structure. The electrical connections to the output combining structure also provide mechanical support for the power output modules. The servo controller is constructed so that as additional power modules are added, each provides a predetermined proportion of the output power. That is, each module will add in a linear fashion to the total output capability of the amplifier. Load sharing among the modules is provided. An etched copper resistor having a positive resistance versus temperature characteristic is provided to aid load sharing among the output semiconductors. A feedback signal is derived from the power output modules to protect the servo controller.

Abstract: Scaffolding, for working in an area having relatively close spaced sidewalls, comprising generally T-shaped stackable members wherein the top of the T is adjustable outward to contact the sidewalls and limit sideway scaffolding movement. The T-shaped members can be stacked vertically, one atop the other, to provide different heights. A work platform, or staging, extends between the top of the uppermost T-shaped section and the top of a similar height spaced apart T-shaped section. Horizontal supports or stabilizers extend between the vertical columns which are built up from the T-shaped sections. The T-shaped sections are formed from metal tubing with adjustable portions, such as a threaded member, being connected at the ends of the top tubular member. When the scaffolding is erected, these adjustable members are adjusted out to engage the walls between which the scaffolding is utilized.

Abstract: A remotely adjustable back pressure relieving hydraulic regulator system particularly suitable for use on the work roll bending and balancing systems of a rolling mill. A normally open air operated valve and a normally closed air operated valve are modified and interconnected to provide the disclosed remotely adjustable pressure regulator. The normally closed valve is connected to a pressurized hydraulic supply. The normally closed regulating valve opens in response to a control air pressure signal applied thereto and is modified to close when the hydraulic pressure at its outlet port exceeds a desired or selected pressure. The pressure at the outlet of the pressure regulating valve required to move it to the closed position depends on the pressure of the applied air control signal. Thus, as the pressure of the air control varies, the hydraulic pressure required to close the valve also varies.

Abstract: A double break air disconnecting switch for high voltage electric power installations having a switchblade fixed to a rotatable center insulator for unitary movement therewith and fixed jaw contacts mounted at the ends of the switchblade. A pivoting contact bar which is engaged by one of the jaw contacts is supported from each outside insulator stack. Each contact bar is pivotally supported from the associated insulator stack for movement between a closed position in high pressure engagement with the jaw contact and an open position not in high pressure engagement with the associated jaw contact. During closing as the contact bar pivots from the open position to the closed position, the contact bar pivots around its longitudinal axis with respect to the jaw contact from the low pressure engagement position to the high pressure engagement position.

Abstract: A white rust inhibited composition is comprised of a zinc containing substrate. A white rust inhibiting composition contacts the substrate and is comprised of a vapor corrosion inhibitor and a pH adjusting compound to adjust and maintain the pH of the white rust inhibiting composition between 8 and 12.5.

Abstract: In a process for treating a bath of molten metal in a refractory-lined metallurgical furnace by introducing oxygen into the bath, an improved method for protecting selected portions of the refractory lining against wear. Liquid hydrocarbons are controllably injected through ports in the lining located in proximity to the aforesaid selected portions so as to direct the hydrocarbons toward the selected portions and thereby prevent corrosion by constituents of the bath.

Abstract: Apparatus for generating synchronized multi-axis intermittent motion utilizing electronic encoding, memory and a position control system having feed-forward control. A plurality of slave shafts are rapidly and accurately positioned in response to the positioning of a rotatable master shaft, without mechanical interconnections therebetween. An analog transducer is attached to the master shaft providing an analog position output which is fed to a master encoder which feeds a digital output to a plurality of independent digital memory devices. Each digital memory device provides, in response, an output digital signal indicative of the desired position of an associated slave shaft. The output of each memory device, through an appropriate digital-to-analog converter, is fed to a position controller which positions the associated slave shaft as desired. The servo controller includes a feedforward input to speed positioning and reduce system lag.

Abstract: A brushless printed circuit resolver for converting a shaft angular position to a voltage signal, defined by the envelope of a carrier, which indicates the mechanical angle. The brushless resolver includes a stationary member having two conducting foils formed thereon which are capactively coupled to associated foils on a movable member. The capacitive coupling between these input foils remains constant as the movable member is moved. A pair of output foils are also disposed on a movable member and each is electrically connected to one of the movable input foils. A pair of shaped stationary output foils are mounted with a small separation from the movable output foils so that the capacitive coupling between the movable and stationary output foils varies as a determinable function.

Abstract: A ball throwing machine having a flat, circular resilient disc with an off-center opening formed therein through which a ball to be thrown is forced at a predetermined velocity. By properly positioning the flat circular resilient disc, having the off-center opening formed therein, a thrown ball can be made to spin about any axis perpendicular to the ball trajectory. A tubular barrel is mounted adjacent to the resilient disc so that as a ball is forced from the throwing machine it is forced through the opening in the resilient disc and into and out of the barrel. The barrel, which is positionable, permits the ball ejected from the throwing machine to be accurately aimed in any desired direction. A firing chamber is located adjacent the resilient disc on the side opposite the barrel. Balls to be thrown are fed into the firing chamber by a ball feeder.