Abstract: A sheet rolling machine including a plurality of parallel cylindrical rolls has mounted forwardly thereof a guard structure, wherein the guard structure utilizes an upper and lower parallel arrangement of semi-cylindrical members. The members may optionally include adjustable linkage and magnetic mounting means.

Abstract: A cover unit for covering an external face of a machine tool. The cover unit is formed with small opening for allowing a workpiece to pass therethrough. The cover unit is also formed with a large opening for facilitating maintenance to the machine tool. The small opening is selectively closed by a first closure means to avoid scattering of the cutting chips and machining liquid toward outside during machining to the workpiece. The large opening is selectively closed by a second closure means during machining to the workpiece.

Abstract: A safety module for a machine table comprises two vertical columns, a safety plate supported by the vertical columns for protecting the machine table and designed to aid in the prevention of accidents, cantilevers connecting the columns to flanges at a front of the machine table, and releasable coupling devices received in bores in the flanges for connecting the cantilevers thereto.

Abstract: A guard at the inlet side of the nip of two rolls in a calender or a like machine has an elongated support which is mounted in the machine frame for movement toward and away from the rolls at the inlet side of the nip. The support carries two elongated strips each of which is adjacent one of the rolls and has several sections. The support carries discrete moving mechanisms for the sections of each strip regardless of whether the sections are discrete sections or such sections form parts of a one-piece strip. This renders it possible to select and alter the width of the entire clearance between each strip and the periphery of the respective roll regardless of eventual deformation of the support and/or of the rolls.

Abstract: In a linked bar member-type apron arrangement for protecting guide tracks, drive assemblies, positions which are liable to accident, or the like, in machine tools or the like, the bar or plate members are each connected together by individual bendable elements which are each secured to the two adjoining plate or bar members. The fixing is preferably made by form-lockingly connecting the bar members to the bendable elements. The bar members preferably comprise extruded aluminium members and the bendable elements preferably comprise extruded polyurethane members. The apron arrangement is easy and inexpensive to produce, extremely durable, easy to handle and highly bendable.

Abstract: A protective safety cover for a power transmission chain of a chain saw power head and an attachment for the power head, having at least two fins for engagement by the cover, is provided with two grooves adapted to frictionally engage the fins to secure the cover to the attachment. The grooves are curved until the fins are located therein so that upon location of the fins in the grooves the cover is resiliently deformed to correspond to the shape of the fins thereby enhancing the frictional engagement between the fins and grooves.

Abstract: This safety shield is collapsible and for use with a vertical drill press to protect the press operator from injury. The shield includes a pair of interconnected telescoping hollow cylinders, with the top cylinder of elongated shape that is mounted to a non-rotating, vertically movable drill housing member, while the lower cylinder is also of elongated shape and it is suspended from the top cylinder and is capable of telescoping with respect to the top cylinder. The top end of the top cylinder has a novel adjustable clamping collar so the collar may expand and contract, and fastening means are used for tightening and loosening the collar with respect to the drill housing member. The lower cylinder of the shield is also fitted with an enlarged collar adjacent its top end of about the same size as the adjustable collar of the top cylinder.

Abstract: A barrier guard for a machine having a machine surface including a grille having a plurality of horizontal bars, a plurality of links having first ends pivotally mounting the grille and second ends pivotally mounted on the machine, brackets mounted on the machine, slots in the brackets, roller followers mounted on the grille and located in the slots for guiding movement of the grille in a predetermined path as it is caused to pivot relative to the links, a base bar on the grille for providing progressively greater clearances from the machine surface as the grille moves in a predetermined direction, and detents for retaining the grille in a plurality of adjusted positions.

Abstract: A barrier guard for a machine having a machine surface including spaced brackets mounted on the machine, spaced elongated links pivotally mounted on the spaced brackets, a grille mounted for sliding movement in first slots in the elongated links, second slots in the brackets, followers attached to the grille and located in the second slots to cause the grille to move rectilinearly in the first slots when the elongated links are caused to pivot, and a base bar on the grille for providing progressively greater clearances from the machine surface when the base bar moves in a predetermined direction.

Abstract: A perimeter guard for a machine wherein a plurality of vertical posts are spaced about a machine. Each post is H-shaped and has lateral flanges projecting from it to create vertical channels on each side of the post. A transparent window is slidably mounted in one set of perimeter channels to form an upper guard and a lower pannel is slidably mounted in the other set of opposed channels.A counterbalance is provided for the windows and a detent is provided for locking the lower panels in their lowermost position or in a raised position.

Abstract: An emergency actuator bar extends across an opening in the housing of a lint cleaner in a cotton gin. Actuator arms which hold the bar also normally hold a trip plate in the run position. However, a workman striking the emergency bar will remove a sear on one of the actuator arms from the trip plate to permit a spring to snap the trip plate into a stop position. When the trip plate moves to the stop position, it disconnects electrical power to a motor driving the machine. The trip plate movement also applies a brake which stops the machine.

Abstract: An industrial robot with a safeguard mechanism for mechanically preventing occurence of any uncontrolled movement of a movable part of the industrial robot, the safeguard mechanism having mechanical engagement means which provides a disengageable mechanical lock between the movable part of the industrial robot and the stationary part of the industrial robot or another stationary member different from the industrial robot.

Abstract: An improved safety device or guard for use upon a press or other machine, which has a work zone for receiving a work piece, is provided to protect the operator. The guard has a base with sloped surfaces leading to the work area and slidable gates positioned adjacent said base. The operator inserts the work piece by moving it along the sloped surfaces of the base until it contacts the gates and forces the gates upward. The gates are raised only by an amount which is sufficient to allow the work piece to move into the work zone. The gates ride upon the top of the work piece and automatically adjust for various thicknesses of the work piece during the operation of the machine. The guard has flange members which are attached to the base for slidably mounting the guard to a machine and has a barrier mounted upon the base which is angled inwardly toward the work zone for permitting the use of work pieces which are shorter than the overall width of the barrier.

Abstract: A four part guard assembly for the rotating drive connection between a drive motor and a pump. The guard assembly being rigidly and removably secured to the frame of the pump and extending to a point short of the drive motor and encompassing the drive connection therebetween. The sleeve is of two part construction removably secured together to permit removal of one part for gaining access to the drive connection for field servicing maintaining the remaining components in assembled condition.

Abstract: A safety device for roll forming apparatus that has a pair of oppositely rotating pressure rollers with parallel axes and peripheral cylindrical surfaces which define between them a gripping and contact gap. The safety device comprises a pair of safety rollers located rearwardly of the pressure rollers and having peripheral portions spaced apart a distance greater than the gap between the pressure rollers and means for rotating the safety rollers in a rearward direction with respect to the pressure rollers in order to engage and reject foreign articles placed between the safety rollers.

Abstract: A barrier guard for use with a winding machine or the like to prevent inadvertent access by the operator to a nip established between two cooperating rolls. The barrier guard includes first and second generally U-shaped guard bars, the second guard bar being pivotally connected to an elongated reach of the first guard bar which is adapted for pivotal connection to the machine frame for movement between an operating position wherein the guard bars prevent inadvertent access to the nip and a nonoperating position enabling operator access to the rolls for servicing and the like. A limit switch is mounted on the machine for actuation by the barrier guard so that operational rotation of the rolls is enabled only when the barrier guard is in its protective position.

Abstract: Disclosed is an improved safety guard for use with sheet feeding mechanisms which is disposed between the feeding mechanism and the exposed feed roll nip of a mechanism for the processing of the sheet material. The safety guard includes a non-rigid, non-elastic member which prevents an attendant from inadvertently placing his appendages in the exposed nip of feed rolls while not interfering with the passage of the sheet material from the feed mechanism to the feed rolls of the processor. The safety guard adjusts automatically and instantaneously as the width of the sheet material changes to shield the variation in exposure.

Abstract: A gear guard is provided and specifically a guard for a pinion gear which meshes with a larger gear. The guard is specifically designed for use with a cement mixer and includes a U-shaped portion extending around part of the pinion gear and an elongate portion extending therefrom along a ring gear on the mixing drum in a direction from the U-shaped portion opposite to the direction in which the ring gear rotates.

Abstract: In accordance with the present invention a power press or tool guard is provided. The guard includes a first generally vertical protective portion which is made of a protective material which is at least partly transparent through which the operator may view the operation of the tool or press; and a second protective portion which depends from the first protective portion and extends inwardly toward the press or tool. The second protective porton includes a plurality of arms or tynes which are pivotably mounted on the lower portion of the first protective portion. The inclination of the arms or tynes on a given side of the guard may be varied by a control member mounted on the first protective portion. In addition the length of individual tynes may be adjusted by loosening fasteners which hold the tynes in place depending from the first protective portion.

Abstract: Disclosed herein is an engine comprising a starter pinion and a flywheel assembly including a generally circular member having a peripheral surface including a radially outwardly extending lip. A ring gear is secured to the peripheral surface and includes teeth adapted for engagement with the starter pinion. The flywheel assembly also includes a flexible annular member secured to the circular member between the lip and the ring gear. The flexible member is located adjacent the ring gear to prevent access to the ring gear teeth by an engine operator, and is displaceable away from the ring gear teeth during engagement of the ring gear teeth with the starter pinion.

Abstract: A multisided guard for guarding a space containing, for example, a hazardous operation from which personnel are to be protected. The guard comprises a plurality of vertically extending walls, each comprising a pair of upper and lower panels which are adapted to be swung from a lower position covering the space to an upper position uncovering the space.

Abstract: A safety guard for a pressing brake into which a work piece is inserted manually by an operator standing in front of the machine comprises a horizontal bar disposed between the machine and the operator at somewhat above waist height so as to serve as a stop for the operator's forearms as he manually inserts the work piece. The bar is adjustable vertically and horizontally toward and away from the machine to compensate for differences in the "reach" of the operator so that engagement of the operator's forearms with the bar will prevent insertion of the operator's hands into the pressing area.

Abstract: A protective cover system for use in connection with guiding paths of machine tools including a plurality of overlapping cover plates telescopically moved into and out of each other while each cover plate at its front end face rests on the guiding path and at the rear end rests on the next segmental cover plate. Between the individual cover plates there are arranged energy storing means the return force of which is zero in the intermediate position of said energy storing means whereas the return force of said energy storing means is at its maximum in the fully pulled-out or pushed-in position of said cover plates. Each energy storing means includes a cylinder with an inserted elastic body and a piston. Between the cylinders and the piston at least one cam segment is provided. Relative movement between the cylinder and the pertaining cam segment is brought about by fork-shaped rods linked with the arms of said fork-shaped rods to the front end faces of the cover plates.

Abstract: A safety guard for a press brake includes a sheet of rigid transparent material suspended by a pair of first cables from a frame of the press. A lower edge of the sheet is displaced a predetermined distance above a bed of the press providing just enough room so that a forward portion of a workpiece can be slid beneath the lower edge of the sheet and positioned on the bed of the press without providing additional space through which an operator's hands can be inadvertently extended. An operator holds a rearward portion of the workpiece with both hands as a ram of the press comes down during a work cycle to engage and fabricate or form the forward portion of the workpiece positioned on the bed. Just before the fabrication begins, a second pair of cables connected to the sheet and passing through a series of pulleys alternately on the frame and ram of the press operates, as a consequence to movement of the ram, to rapidly move the sheet out of the way of the workpiece.

Abstract: A compact, multi-purpose power machine which can be safely used by children, including a housing with deep, narrow slots that prevent the insertion of a human finger therein, and cutting tools located within the slots so a child cannot touch them.

Abstract: A safety guard structure including a guard member adapted to be interposed between a mechanism such as a punch press and the operator thereof to protect the operator from injury. In one form of the invention the guiding frame for guiding the guard member between its upper and lower positions is swingably connected to the mechanism to be guarded to permit the entire guiding frame to be swung upwardly so as to present no interference when it is desired to modify the mechanism or to change the dies thereof. In another form of the invention the guide structure for the guard member is entirely positioned above the area to be protected so as to present no interference when it is necessary for operators to work around the machine. An interlocking device is provided to prevent operation of the mechanism except when the guard member and its guide structure are in proper operating position.

Abstract: A safety guard structure for protecting personnel from injury while operating a machine such as a punch press. The guard member is supported at three points for vertical movement between upper and lower positions. At two upper points the guard is supported on rollers which roll on vertically extending parallel guides and at one lower point the guard is centrally supported on the lower end of a vertically extending rod slidable in fixed bearings. The resulting structure is not only economical to build but gives optimum guiding effect for the guard. The embodiment disclosed permits the entire guard structure to be swung outwardly to a position permitting access to the machine above the protected area.

Abstract: A safety guard for a machine tool, such as a punch press, having an operating part, such as a ram, having a control member. The guard comprises gates between the operating part and a machine tool operator. One of the gates is slidable across the front of the machine tool. Another of the gates is disposed at the side of the machine tool and has a pivot on which it is swingable. The sliding gate carries a control actuator and closes on a path which intersects the free end of the swinging gate which has a bumper. The sliding gate is powered by an air cylinder having a control accessible to the operator. When either gate is open, the machine tool control member is deactuated and there is no danger that the machine tool will operate to endanger the operator's hands. The machine tool operator actuates the gate control to close the sliding gate.

Abstract: A guard is disclosed for guarding the nip between a pair of rolls in a power roll mill to prevent the mill operator's fingers from being crushed between the rolls. The guard comprises an upstanding plate pivotally mounted transversely between the opposite side frame members of the rolling mill in front of the pair of rolls being guarded. The top of the guard is flat and is located adjacent and below the normal path for the infeed of a sheet of material being formed between the rolls in order that an operator's fingers which support the underside of the sheet will engage the guard and be prevented from entering the roll nip. The guard plate is depressibly supported at its opposite ends by a pair of upright tubular rocker arms which are pivoted at their base and are biased to a central neutral position. At least one microswitch is provided adjacent one of the rocker arms which is in electric circuit with an electric motor which drives the power rolls to turn the motor on and off.

Abstract: Safety apparatus for a press or the like having dies which are movable relative to each other and which define an open area therebetween for receiving an article includes a gate that is pivotable about a primary pivot axis from an open position to expose the open area to a closed position to shield the open area, and a secondary pivot axis that is parallel to and spaced from the primary axis. In the closed position, the gate engages a normally closed switch means and thereby enable the dies to move towards each other. When the gate is in the closed position and an obstruction is aligned with the gate, movement of the dies causes the obstruction to contact the gate which is pivoted about the secondary pivot axis, whereby the switch means closes and movement of the dies is interrupted.