Abstract: A sighht for a bow that will accurately sight the target at any distance within the range of the bow without knowing the distance to the target. The sight has two sets of cross hairs, one in the front and one in the rear, which create positive vertical and horizontal alignment. The distance between the front and rear cross hairs is adjustable so that it can be set for the pull of the particular bow with which the sight is used.

Abstract: Method and apparatus are described for determining the contour lines for gridded data defining a four-sided cell composed of two grid lines along the X-axis and two grid lines along the Y-axis, involves the steps of sorting four data points according to their values along a selected one of the two grid axes; connecting the point of minimum value along the selected grid axis to the point of second minimum value along the selected grid axis; and connecting the point of third maximum value along the selected grid axis to the point of maximum value along the selected grid axis. In the described embodiment, the contour lines represent common elevation points in a topographic map.

Abstract: An improved combination of prism assembly and sighting target in a novel structure in which the sighting target provides a dual function by acting as the structural support for the prism assembly in addition to its usual function of providing a readily observable target from long distances. More specifically, the present invention provides, in a preferred embodiment, a diamond shaped sighting target, the center of which is provided with an aperture for receiving the prism assembly housing which extends therethrough in a direction normal to the plane of the sighting target. The prism housing is secured to the sighting target by means of a bracket into which the prism assembly is threaded, the bracket being secured to the sighting target.

Abstract: A shaft mixer is disclosed having a number of shaft to which fibers are simulatneously supplied and drawn off again from the individual shafts at differing speeds. The drawn-off fibers are supplied collectively to a connected machine.

Abstract: A portable foldable overhead projector includes a housing having a front opening communicating with an interior cavity, and a bottom aperture communicating with the cavity and closable by a pair of pivoting doors which, when open, support the housing on support legs and accommodate movement of a mirror inside the housing between stowed and use positions. In the use position the mirror reflects light from a source through a transmitting stage in the top wall of the housing which forms a pivoting door to provide further access to the cavity. A mast pivots along the outside of the housing and carries a foldable projection head assembly on a rack and pinion mechanism. When the mast is lowered the rack and pinion can be operated to move the folded projection head assembly through the front opening into the cavity for storage.

Abstract: A wheel is provided for a measuring device of the type having a frame, a distance counter having an actuating lever thereon and mounted on the frame, and structure for mounting the wheel on the frame for rotation about an axis. The wheel has an annular surface for engaging and rolling against a surface along which a distance is to be measured, first and second annular side walls spaced axially with respect to the wheel axis and connected to the annular rolling surface with each side wall having a thickness in an axial direction, a hit pin, and structure for securing the hit pin to the wheel so that a part of the hit pin projects axially from one of the side walls to engage and operate the actuating lever on the counter as an incident of the wheel rotating relative to the frame.

Abstract: An electronic feeler gauge for measuring the dimension of a gap. A flexible base in the general shape or a shoehorn has a raised shoulder portion of greater thickness substantially along its rear half with a forwardly extending tab that acts as a stop. A strain gauge mounted substantially in line with the tab at the lower portion of the concave curve of the flexible base only measures strain across the width thereof. Electrical signals from the strain gauge are conducted to a strain meter by electrical wires for analyzing the signals and converting them to readings indicating the size of the gap into which the flexible base in inserted.

Abstract: A combination marker and tape measure (10) having a housing (12), a flexible tape (18), and a pair of markers (104) which may be used to mark a surface on each side of the flexible tape (18). A front window cover (14) and bottom cover (16) enclose a compartment on a front surface (96) of the housing (12) to prevent exposure of the markers (104) to outside air. A plunger knob (42) is depressed into a recess (40) formed on a declining front face (38) of the housing (12) to move the markers (104) between a retracted configuration to an extended configuration. A locking mechanism (178) formed on a plunger (170) permits selective locking of the tape (18) to prevent coiling and uncoiling of the tape (18). A guide foot (154) removably mounted on an end tab (46) enables marking of a line (166) parallel to an edge (162) of a surface ( 164).

Abstract: A coordinate measuring machine (10) having a horizontal probe shaft assembly (20) in which a cover system is provided for the X and Y axis ways (46, 108) and carriages (50, 106), including inwardly slanted X-axis cover members (26) mounted atop granite exposed way members (24) defining a gap through which the Y column (88) moves, a pair of upstanding side covers (32) mounted over the Y-axis column (88) defining a gap through which the probe shaft assembly (20) moves in its vertical movement. a recirculating cover belt (28) fills the X-axis gap and pleated upper and lower covers (34, 36) cover the vertical gap lying between the side covers (32) at the front and rear, while a top cap (38) atop side covers (32) and end caps (30) are fit over the X-axis cover members (26), X-axis way members (24) and base portion (18).

Abstract: A rotary workpiece support table (12) for a horizontal arm coordinate measuring machine (10) having a retractable datum ball (144) for determining the axis of rotation of a table top plate (36) on a table base (40). A frictional drive mechaism (38) has a drive wheel (72) urged into engagement with a perimeter surface (74) and rotates the table top plate (36), with a counterforce roller (98) neutralizing the side loading on an air spindle (116). The table base (40) is positioned on a machine base (30) and spacer (32) by a rotational connection (46) and a diametrically opposite block and cam follower connection (48) to avoid the effects of differential thermal expansion between the table base (40) and the machine base (30) and spacer (32).

Abstract: A method and apparatus checks and adjusts the relative position of electrodes which form a so-called underwater spark gap device, particularly for medical purposes, and in which one electrode is fastened to the base part by means of at least one electrode holder. The method and apparatus employ an adjusting arrangement which positions the electrodes at a desired position with respect to axial displacement, angularity between the axes, and electrode spacing. By means of a relative movement of the adjustment arrangement, in a direction which is vertical with respect to an electrode axis, the electrode holder or holders are plastically deformed in such a manner that the electrodes, after the rebounding of the electrode holder or holders, are located at the desired position.

Abstract: A device is shown for measuring the minor diameter of a screw thread. The device includes a frame and an adjustable indicator blade which moves in a vertical plane for engaging a thread root of a screw arranged on the frame transverse to the adjustable blade. A pair of laterally moveable blades are mounted on the frame oppositely to the adjustable blade for holding a screw therebetween. Each of the laterally moveable blades has a blade point which engages a thread root of the screw at spaced locations along the longitudinal axis of the screw. An indicator is provided for determining the relative distance between the adjustable blade and the blade points of the laterally moveable blades when a screw is held therebetween.

Abstract: Metallic toothed wire is disclosed for textile fibers processing elements for processing cotton, synthetic fibers and the like, and particularly for use with cleaning rollers in which the surface is clothed with the toothed wire. The toothed wire comprises a plurality of teeth having a tooth distance (4,17) between the teeth (3,16) in a circumferential direction of at least 10 mm. The teeth (3,16) have a height which extends to about one third of the tooth distance, and preferably no more than 3 mm. The teeth have an ascending rear portion (5,20) which ascends in a rear inclination over about half the tooth distance from a tooth base (9,19) to a tooth tip. An undercut portion (8,21) which has an undercut inclination extends downwardly from the tooth tip to the base. A positive front angle (7,23) is between the rear inclination and the undercut inclination within a range of 10 degrees to 40 degrees.

Abstract: Known apparatuses comprise a feed passage (4), a nozzle passage (5) extending therefrom in the feed direction (T), and a flow generator for generating a feed gas flow in the feed passage. The outlet portion of the nozzle passage (5) has provided therein a lateral opening (13) which permits the outflow of the gas stream.To be able to carry out pressure measurements in a measuring funnel with a known apparatus as well, the apparatus comprises a control (40) through which the lateral openings (13) can be closed. After the opening has been closed, pressure which can be measured with the aid of a pressure sensor (42) builds up in the tapered nozzle passage. The pressure measured corresponds to the thickness of the fiber sliver and can be used for controlling an upstream card.The apparatus is employed during the feed of card slivers.

Abstract: A measuring tape assembly comprises a housing containing a rolled measuring tape which extends through a lower hole in a front wall of the housing. The upper portion of the housing contains a flashlight which directs light at an angle through an upper portion of the front wall. A switch is positioned at the top of the housing near the front wall and a tape engaging clamp is positioned on the bottom of the housing near the front wall. A spring biases the clamp into engagement with the tape so that the tape is held in any desired extended position. Pressing the clamp upwardly against its spring permits the tape to withdraw back into the housing under the influence of a conventional spiral spring which is connected to the measuring tape roll.

Abstract: A padding element for protection against shocks, particularly useful with a crash helmet, which confers on the helmet unusual adaptability to the user's head, comprises at least one deformable vesicle containing a fluid which, in use of the padding element, is a saturated vapor state, a Peltier-effect thermoelectronic component having a face in contact with a surface section of said at least one vesicle, and a power supply for supplying an electric current in either directions to said component, so as to either develop or absorb heat from said face and adjust the vesicle internal pressure.

Abstract: A process for conditioning cotton is described, in which cotton is brought to a moisture content of about 8-9%, by contacting it with humid air which possesses a residual relative humidity, after contact, of about 65% to 80%, and a temperature comprised between about 35.degree. C. and 95.degree. C.

Abstract: Apparatus and method of gauging the "saddle" of a container finish in which a test rig supports a bottle or container at an elevated position so the container can be rotated about the axis of its finish. The container is threaded into a finish ring. The finish ring is accurately supported for rotation in a horizontal plane with the feeler of an indicator engaging the top rim of the container during rotation. 360.degree. rotation in both directions gives maximum and minimum readings that are registered and used to determine the differential or saddle of the container.

Abstract: A protective helmet is provided with a detachable wire face guard firmly secured in protective relation to the sides and peak of the helmet in mutual reinforcing relation therewith. The lightweight, fully ventilated mask affords a high degree of protection, with a wide, substantially unobstructed field of view, and is well suited for use by game playing youngsters such as those playing in the Little Leagues. A close coupled upper beam portion of the mask positioned, in use, above the normal field of vision of a user has a plurality of stiffening web members extending between upper and lower chord members of the upper beam portion of the mask. A mask lower beam portion is spaced downwardly from the upper beam portion in relatively inclined relation thereto and defining in use a major visual field therebetween, being spaced apart a distance sufficient to prevent substantial ingress of a predetermined standard sized object such as a baseball therebetween.

Abstract: A textile fiber processing assembly includes a feed chute adapted to be charged with fiber material and having a bottom portion provided with a fiber outlet through which the fiber material is discharged; a fiber feeding arrangement, including a feed roller and a counterelement cooperating with the feed roller, positioned externally of the feed chute downstream of the outlet opening as viewed in a direction of advance of the fiber material upon discharge thereof from the outlet; and a textile fiber processing machine having an input and a fiber processing roller situated at the input downstream of the fiber feeding arrangement and arranged for receiving the fiber material advanced by the fiber feeding arrangement. The feed roller adjoins the outlet and is arranged for drawing fiber material from the feed chute through the outlet and advancing the fiber material to the fiber processing roller.