Abstract: An attachment device in the form of a bearing housing (10) and an arm (38) projecting out through an opening (44) in the housing. The arm is supported in a bearing support (42) in the housing and serves to carry, at the end opposite the housing, an ear muff to move with a rocking motion between a stationary rest position and a position wherein the earmuff exerts a pressure around the wearer's ear. A separate spring component (44), preferably annular in form, is rotatably supported in and prestressed to bear against, on one side, an adjustable spring support (48), which is located inside the housing and remains stationary during the rocking motion, and, on the opposite side, the end (52) of the arm (38) located inside the housing. By this arrangement there is exerted on the said end of the arm a controlled force directed away from the spring support (48) for the purpose of stabilizing the arm in its two positions.

Abstract: A method of producing hemstitches by means of a zigzag stitching presser foot comprises the steps of forming two fixing stitches at one point adjacent an edge of the fabric with feeding of the fabric in one direction while reciprocating the needle a small distance laterally, two stitches laterally spaced apart from each other and from the fixing stitches and formed with feeding the fabric in the one direction without lateral movement of the needle, and two crossing stitches interconnecting the fixing stitches with the lateral stitch remote from the one point and being formed with feeding the fabric in the opposite direction.

Abstract: An ancillary multichambered fluid-filled cushion for use as an energy-absorbing insert on the inside of protective headgear of the type having an outer helmet shell and a flexible inner liner. The chambers may be distinct or may be interconnected by means of communicating passages which control the flow of fluid between chambers. The chamber and communicating passages are formed of resilient material bonded together at perimeter flanges which may be engageable with the helmet inner liner so as to hold the cushion in place. The cushion is aligned intermediate the wearer's head and the outer shell, between existing inner liner components, so as to provide partial support of the helmet shell.

Abstract: A sewing machine comprises an upper shaft adapted in a known manner to reciprocate the needle of the sewing machine. A motor-driven pulley is freely turnable on the shaft and normally connected to the latter by a clutch. A stop cam having an engaging face is fixed to the shaft for rotation therewith and a stop lever is movable by a manually operated lever between an inoperative position located out of the path of rotation of the engaging face and an operating position in the path of the latter to stop rotation of the cam and therewith the shaft upon engagement of the stop lever with the engaging face. Elements cooperating with the stop cam cooperate with the clutch to disconnect the pulley from the shaft when the stop lever blocks rotation of the stop cam.

Abstract: In the sight opening of the face shield of a welding helmet, a protective lens overlying a filter lens and having a light impervious coating about its edge portion blocking the passage of light rays through its edge portion and through the clearance about the lenses within the sight opening and thus eliminating the use of a gasket or other sealant about the lens first mentioned or within or about the sight opening.

Abstract: An electronically controlled multiple pattern sewing machine is provided with the capability of sewing a repetitive sequence of patterns. The sewing machine operator selects, one by one, the patterns desired to be sewn and these are stored in a temporary memory in the order of their selection. In addition, each of the patterns may be modified such as by providing double feed, bight mirror, feed mirror, bight override and/or feed override. The arrangement also allows the operator to replace a previously selected pattern in a string with a different pattern at the same place in the string.

Abstract: An electronically controlled multiple pattern sewing machine is provided with an arrangement which senses when the buttonhole paddle and buttonhole presser foot are not properly positioned at the time a buttonhole pattern is selected to be sewn. Under these circumstances, an alarm is activated and stitches are not formed even though the operator may attempt to sew.

Abstract: A thread monitoring device wherein the broken tension on a thread (or threads) is sensed by a biased spring to close an electric circuit yielding an audible or visual signal.

Abstract: An electronically controlled sewing machine sews the mirror image of a pattern in the feeding direction by using for the first needle penetration the bight data of the first stitch of the pattern and feeds using the feed data of the last stitch of the pattern. Then the second needle penetration uses the bight data of the last stitch of the pattern, followed by feeding using the feed data of the next to last stitch of the pattern. This continues until the pattern is completed with the feed data of the first stitch.

Abstract: A sewing machine has a pattern selection device and a seam memory for supplying stitch data for a needle positioning mechanism and a feeder mechanism. The pattern selection means includes a control switch adapted to be set in accordance with the type of cloth to be sewn. On basis of information input via the control switch and preprogramming of the memory, that seam data is chosen which is most suitable to the selected type of cloth and a selected sewing operation.

Abstract: A garrison cap having a crown portion and an outer band portion attached together at the lower margin of the crown portion. Both the crown portion and the outer band portion are composed of a multiple ply laminated material including an outer ply of textile suiting material and an inner ply of nylon tricot textile material with the two textile materials being securely bonded together by a polyester foam.

Abstract: Shock absorbing mounts for the face guard of a helmet having a substantially rigid shell and being connected to the shell allow substantial movements of the face guard relative to the helmet shell in response to forceful blows on the face guard. The mount protects the head of the wearer of the helmet from severe shocks and also prevents severe deformation of the helmet shell likely to crack it. The mount can be installed at all points of attachment of the face guard to the helmet to provide a resilient anchorage for the face guard without loss of security.

Abstract: A motorcycle helmet having a modified exterior configuration to attenuate noise generated when passing through the air. The modified helmet begins flaring outwardly from the traditional helmet configuration at a point adjacent to the chin of the wearer, terminates at a location generally behind the ear of the wearer and is spaced from the exterior shell of the helmet at the central portion of the rearward edge. The trailing edge of the sound attentuating device is open so that the wearer retains the ability to hear noises from behind and beside him.

Abstract: A control system allows an automatic parallel operation of a plurality of embroidery sewing machines each in accordance with individual pattern sewing control data. The control system essentially comprises a group of random access semiconductor memories capable of storing a plurality of sets of pattern sewing control data, each of which permits a single pattern sewing to be completed, a plurality of branch electronic controllers each associated with a different one of the sewing machines, and a single main electronic controller for reading one or several blocks of pattern sewing control data from the semiconductor memory and supplying it to the branch controller. The branch controller feeds a request for data supply to the main controller in timed relationship with the operation of the sewing machine.

Abstract: A thread changer for an embroidering machine, having a plurality of needles for different threads, comprises, a driving shaft, a plurality of thread levers loosely mounted on the driving shaft, a coupling element for each thread lever connected to the driving shaft and rotatable therewith, and a clutch member connected between the drive shaft and the thread levers for coupling a selected one of the thread levers to the drive shaft to move the selected thread lever into association with a selected one of the needles.

Abstract: A sewing machine produces patterns of stitches including straight stitches, in which a single operating dial is manually operated to select one of the patterns with a proper feeding amount in one rotation range thereof, and to vary feeding movement with a specific cycle in relation to the same patterns in another rotation range thereof to produce so called "super patterns".

Abstract: A pattern elongation system in an electronic sewing machine includes a number of switches on the housing of the machine and a rotatable knob for actuating a pattern selecting circuit of the pattern elongation system. The pattern elongation system further includes a memory for storing stitch control data and a discriminating signal, a pulse generator operated in synchronism with rotation of the upper drive shaft of the machine and producing a timing pulse, an oscillator cooperating with the pulse generator to address the memory per stitch of the pattern, and a comparator which compares the elongation signal and the discriminating signals to cause the oscillator to determine the addresses for the stitches of pattern.

Abstract: A device for protecting the face from solutions used is disclosed.The device comprises a channel shaped flexible body mountable around the head following the hairline. The device is provided with valves for discarding the solution caught in the channel.

Abstract: An electronic sewing machine incorporating a microcomputer including an electronic memory storing a number of stitch pattern data groups as well as scanning means for scanning and displaying the various stitch patterns on an indicator display. A potentiometer knob actuates the microprocessor for providing the various stitch patterns. The scanning means can be an electric motor or a pulse generator.

Abstract: A polyurethane rubber covered roll comprises a metallic roll core, a reinforcing layer adhering to the outer surface of the roll core, and formed by a nonwoven fabric impregnated with a mixture of a thermosetting resin and a fine inorganic powder, and a layer of polyurethane rubber united integrally with the outer surface of the reinforcing layer. The roll is useful when used, for example, in a paper machine.