Abstract: A safety switch device for monitoring the position of a protective cover, the cover being pivotable about an axis into and out of a closed position. The safety switch device includes a fixed position switch unit which houses at least a first electrical signal generator which will be switched between states in response to movement of the protective cover from the closed position, the signal generator being operated by an actuator which rotates about an axis. The switch device also includes a fastener element which is adjustably mountable to the protective cover and an articulated mechanical coupling which extends between the fastener element and the signal generator actuator, the coupling element being movable in at least two planes.

Abstract: An alignment apparatus for a stroke controlling mechanism having a cam shaft with a number of cams disposed around the cam shaft includes one or more circular lines and one or more sets of circular lines formed around the cam shaft. One or more longitudinal lines are formed on an outer surface of the cam shaft in a direction parallel to the longitudinal axis of the cam shaft. A check line is formed on a side surface of each cam. The cams are disposed on the cam shaft by aligning the check line of each cam with one of the longitudinal lines and by aligning each cam with one of the circular lines. A protractor is provided to measure the angles between the check line of each cam and the longitudinal line of the cam shaft.

Abstract: A programmer/timer for an appliance of the type having a rotatable cam drum advanced for sequential actuation and deactuation of a plurality of electrical switches. The drum is advanced or indexed intermittently by an oscillating advance pawl engaging a ratchet wheel and also continuously by a gear driven by a common motor for oscillating the advance pawl. The ratchet wheel has a hub which is frictionally engaged to drive the cam drum. The driven gear in turn is frictionally engaged with the hub to also drive the ratchet wheel. When the advance pawl engages the ratchet wheel for intermittent drive, the driven gear slips on the ratchet hub. Upon user selection, a separate cam track lifts the advance pawl to permit the driven gear to continuously drive the ratchet wheel.

Abstract: An O-ring type clutch permits a cam carrying shaft to be manually rotated independent of a motor drive means. A bell is actuated by an actuator that engages a movable switch blade. And cams are connected to a cam carrying shaft through a lost motion connection.

Abstract: A programmer/timer for an appliance of the type having a rotatable cam drum advanced for sequential actuation and deactuation of a plurality of electrical switches. The drum is advanced or indexed intermittently by an oscillating advance pawl engaging a ratchet wheel and also continuously by a gear driven by a common motor for oscillating the advance pawl. The ratchet wheel has a hub which is frictionally engaged to drive the cam drum. The driven gear in turn is frictionally engaged with the hub to also drive the ratchet wheel. When the advance pawl engages the ratchet wheel for intermittent drive, the driven gear slips on the ratchet hub. Upon user selection, a separate cam track lifts the advance pawl to permit the driven gear to continuously drive the ratchet wheel.

Abstract: A timing mechanism comprising a camstack having a hollow hub rotatably mounted between support plates, electrical switches actuated by the camstack as it rotates, a bearing having a bore in it and rotatably journalled in one of the support plates, and a shaft mounted axially in the camstack with one end rotatably supported in the bearing and the other end in the other of the support plates. The shaft is axially movable between a first position and a second position, which positions are determined by a detent assembly comprising two grooves in the shaft and spring fingers located in the bore of the bearing. The fingers engage one groove when the shaft is in the first position and the other groove when the shaft is in the second position.

Abstract: A device for reciprocating movement, wherein a pair of drivingly connected gearwheels each has an outwardly extending stud that engages one of a pair of spaced, aligned slots in a transverse member. The transverse member is guided for movement by a pair of laterally spaced jambs that include opposed, respective longitudinally extending slots that receive the outer end portions of the transverse member. One of the gearwheels includes an axially extending concentric track that is circular and includes at least one gap or opening, and an electrical switch in contact with the track for regulating the operation of an electrical circuit that controls the rotation of the gearwheels.

Abstract: An electrical appliance switch has a switchable contact assembly and a switch controller. An actuator is in contact with the switch controller and has detent toothing on at least a portion thereof. A longitudinal adjustment cam has at least one notch for frictionally engaging the detent toothing. The adjustment cam has an oblong tubular configuration for surrounding a portion of the actuator and has a closed bottom end. The adjustment cam contacts the switchable contact assembly. Adjustment of the adjustment cam substantially sets a lead path of the actuator. The actuator cam has at least one cam face which has a slanting plane configuration for contacting the switchable contact assembly. Adjusting the actuation cam causes the cam face to change a transmission ratio of a longitudinal displacement path of the actuation cam to a cam spread displacement.

Abstract: This programmer comprises programme-cams corresponding to a plurality of programmes having clearly separate starting points disposed at angular intervals from one another. It further comprises a control element adapted to be rotated manually for selecting the initial position of one of the programmes. This element comprises lateral pins adapted to engage corresponding orifices formed in a coaxial registering control cam. On the opposite side of this cam a disc rigid with the programme-cams is provided; this disc is rigid with the programme-cams but spaced therefrom. The disc comprises ramp means cooperating with bearing faces formed in the control cam. Spring means interconnect the disc and the control cam in diagonal directions.

Abstract: The present invention relates to a programmer control device comprising a rotary cam block capable of being driven in rotation step by step by an advancing cam actuating an oscillating pawl carrier.The control device possesses means of blocking and releasing the action of the pawl, comprising a blocking lever 50' interacting with means capable of rocking the said blocking lever between two angular positions during each to-and-fro movement of the advancing pawl. In the first position, a part 51' of the blocking lever is located in the path of a slope 55 of the pawl 21, so as to prevent the action of the latter. In the second position, the part 51' is not located in the path of the pawl 21, so as to permit the action of the latter.

Abstract: An intermittent drive includes a pair of reciprocating drive pawls which individually and alternately drive a camstack in a step by step maneuver. Electrical switches open and close in response to the camstack. One of the drive pawls includes a lost motion connection between it and a rotating member. There is a sub-interval switch having a cam disposed within the intermittent drive and a cam follower which operates a switch.

Abstract: This programmer control device comprises a programme-cam unit and a reversing cam unit disposed coaxially and driven for step by step rotation by rocking pawls, notably a pawl cooperating with concentric sets of teeth. The beak of this pawl comprises a stud engaging a slot formed in the first portion of a movable deceleration element having its second portion connected to the first portion by a spring and provided with an extension adapted to be locked in its forward or operative position by the movable core of an electromagnet. The slot formed in the first portion is so inclined that upon each backward movement of the pawl the fall of the beak of this pawl behind each tooth is damped out by the stud in sliding contact with the side of the slot, so as to carry along the deceleration element which may be of the frictional contact type.

Abstract: A programmer comprising a cam unit which can be rotated manually in a first direction by a control shaft 23 able to occupy, under the action of a pawl device comprising a spring, any one of several equidistant stable angular stop positions spaced apart by the angular value of one step, before passing on each occasion through a limiting unstable intermediate angular position, after which this shaft is brought in a resilient manner by the pawl device towards the following stable angular stop position. A motor and drive transmission system are able, when controlled, to rotate the cam unit step by step in said first direction. The cam unit is connected to rotate with the control shaft, with an angular clearance less than the angle through which the shaft travels, between any one of its stable angular stop positions and the limiting unstable intermediate angular position which follows.

Abstract: The present invention relates to a programmer control device.This device comprises a rotary cam block 5 intended to be driven step by step by an advancing device comprising three advancing pawls 21, 22, 23 mounted on an oscillating support. The first pawl 21 can directly actuate step by step the first toothed ring 31 integral with the first part 1 of the cam block 5. The second pawl 22 interacts under the action of an elastic means with the smooth periphery 25 of a cylindrical extension 26 forming part of the second part 2 of the cam block 5. It likewise interacts, via orifices 30 passing completely through this extension 26, with a second toothed ring 32 integral with the first part 1. The third pawl 23 interacts under the action of an elastic means with a third toothed ring 33 integral with the inner periphery of a rate reduction collar 3 mounted rotatably inside the second part 2 of the cam block 5.

Abstract: An indexing plate for a time switch including slide contacts at the circumference of the indexing plate which are radially displaceable from an inoperative position to latch into at least one switching position, which incorporate an actuating projection and a switching finger opposite thereto, and which are conducted between the projection and the finger through slots in the indexing plate. The switching fingers are spaced from each other at the circumference of the indexing plate and evidence a rim area and a switching edge, in whose path of movement there is located a switching element of a switch contact in the actuated or switching position.

Abstract: A motor-driven electric timer consists of a motor, a reduction gear assembly for reducing a rotational speed from the motor to a predetermined speed, an externally actuatable slider having at one side wall thereof a rack, a clutch mechanism consisting of a pinion gear driven by the reduction gear assembly for driving the rack and a spring wire disengageably biasing the pinion gear for engagement with the rack, a switching lever member following a side wall of the slider, a contact member actuated by the switching lever member, and a flat-shaped housing enclosing the timer.

Abstract: The timing cam is advanced for switching purposes by the large reciprocating pawl acting on the ratchet teeth molded on the timing cam. When the program requires a timed period during which conditions remain the same the ratchet teeth are spaced so the pawl cannot pick up the next tooth until the cam is advanced by the small pawl acting on the separate ratchet provided with small, closely spaced teeth. This ratchet has a pinion gear driving the ring gear molded inside the timing cam. The steps imparted to the timing cam by the small pawl and ratchet are very small and consume appreciable time--the length of time taken to position the next tooth for engagement by the large pawl being determined by the space between the large teeth.

Abstract: A cycle control timer unit in which a rotatable annular program carrier is provided having two opposed sides, each formed with a different range program scale and having a different drive coupler means. The unit includes two different rotary drive transmission wheels facing in one direction and rotated at dissimilar speeds respectively adapted for drive connection with the drive coupler means. By flipping over the sides of the program carrier in the unit and connecting the appropriate drive coupler and drive wheel, an operator may easily switch between the different program ranges for control of the unit.

Abstract: A clutch particularly adaptable to a timing mechanism comprising a metal member with an aperture in it and an insert molded as a single unit a plastic shaft extending through the aperture and having two plastic clutch discs engaging opposed faces of the rotating member. Flanges extending from the clutch discs connect the discs to cam means of the timing mechanism.

Abstract: In a timing device for time switch comprising a scale plate rotated at a constant rate and possessing presetting element plug-in portions involving slots, grooves and the like corresponding to time scale on the circumferential part thereof and presetting elements to be inserted to fit into the plug-in portions of the scale plate, this scale plate is composed of a molded plastic guide portion serving to position the presetting elements and to keep the position of each presetting element inserted in the prescribed position, and a metallic body inserted in the plastic guide portion in such a manner that a portion with which the presetting element resiliently engages comes to be a metallic portion.

Abstract: The motor drives the timing drum continuously at low speed through a gear train having a one-way clutch. The motor also drives the input of a second one-way clutch having a drive on its output engageable with the spaced teeth on the interrupted gear formed on the hub of the drum. When the low speed drive rotates the drum to a position in which a tooth on the hub can be engaged by the drive gear the drum is rapidly advanced until contact with the tooth is lost. Switches operated by the cams on the drum are sequenced rapidly during rapid advance. When the drum is manually advanced both clutches are overridden.

Abstract: Actuators for a program timer are removably attached to the timer dial in a snap-on manner to enable simple and easy removal or installing of the actuators to effect changing the schedule of operation of the timer.

Abstract: A switching mechanism has disc cams arranged on a shaft for actuating switches positioned beside the shaft. The disc cams are secured in a particular angular position in conjunction with an annular plastically deformable washer which has an unround aperture seated on a corresponding unround portion of the shaft and thereby locked to the shaft. The disc cam and the element are locked together by bending a region of the washer into a recess on the disc cam.

Abstract: A switching device for variable speed gears in machine tools having an assembly which includes a plurality of axially disposed, rotatably-driven cam discs, each of which is associated with an electric microswitch. Non-rotatable spacers serve to position the cam discs. A spherical key bed clamp axially clamps the cam discs together while permitting rotation of individual ones thereof. A non-rotating indicating disc displays the present RPM or respective gear stage. A shock absorber in the individual gear trains between switching bars and their respective electric motors provides sufficient damping and cushioning to prevent a hard start-up impact when the motor is switched on or when a sliding gear block is engaged. The shock absorber may include an elastic linkage or an elastic spur gear in a toothed wheel gear reduction unit located between the motor drive shaft and the link shaft.

Abstract: A timing device has a day dial and a time dial which rotate to control an electrical output in a programmed manner for a predetermined day period. The time dial and day dial operate a pivotally mounted lever to actuate a switch which is connected between electrical input and output, or load, connectors. The time dial operatively contacts one end of the lever and the day dial operatively contacts the other end of the lever when the dials have been preset to do so by the use of actuating pins which can be positioned in the dials. When both ends of the lever are contacted, the switch is actuated. The pins can be held in their respective time dial or day dial in an operative or inoperative position. Manual means are also provided to bypass the time dial and day dial by directly connecting the input connectors to the output, or load, connectors.

Abstract: A timer device has a pair of switches, a pair of cam means adapted for rotation so as to respectively actuate the switches in a first preselected sequence, and means for driving the cam means to effect the respective rotation thereof. Means for driven association with the driving means so as to be rotatable with the cam means includes means rotatably adjustable from one operating position of at least a pair of operating positions toward another thereof for interrupting the actuation of one of the switches by the one cam means in the first preselected sequence with the actuation of the other of the switches by the other of the cam means and for permitting the actuation of the one switch by the one cam means in another preselected sequence with the actuation of the other switch by the other cam means.An assembly for use in a timer device and a method of operating a timer device are also disclosed.

Abstract: A time switch comprises a scale plate which is rotated at a constant velocity and change-over pawls and a cradle. In the time switch the change-over pawls respectively have each flexible thin body part and are projected outwardly from an annular part and the switch is controlled by deformation of the change-over pawls which can be shifted to two positions for interlocking to or detaching from a lever.

Abstract: A pair of ratchets are coupled to a camstack with each rachet being driven by a separate drive pawl. A no back clutch, that is associated with the camstack to prevent its reversal during its advancement, comprises an annular member having a multiplicity of individual pawls engaging a multi-tooth ratchet coupled to the camstack. A spring biased lever and a spring biased actuator coupled to the lever engages one of the drive pawls so that the drive pawl can be disengaged from its ratchet for at least a portion of a program cycle.

Abstract: A shut-off unit is disclosed. The shut-off unit is to be used to shut off a drive unit which drives a tubular shaft, the latter shaft being employed, in turn, to wind an awning or a roller blind up and down. More particularly, the drive unit includes an electric motor and a step down gear drive axially aligned therewith and the shut-off unit is adapted to be arrangeable in the drive unit so that the step down gear lies between it and the motor. Additionally, the shut-off unit includes switches for stopping the drive and members for operating such switches which have presettable positions dependent upon presettable positions of a driven part of the electric motor. In accordance with the invention, the aforesaid members are in the form of cams which have lobes and which are adapted to rotate as a function of the movement of the element to be wound and to be drivingly connectable to the central output shaft of the step down gear.

Abstract: A coupling means coupling a motor to a series of teeth coupled to a cam means includes a no-back pawl mounted in and carried by a plate, a drive pawl slideably carried by the no-back pawl, aligned apertures in each of the pawls, and a gear means coupled to the motor and having a hub portion extending through the apertures with a drive portion eccentric to the rotational axis of the hub and engaging the drive pawl.

Abstract: The disclosed wind turbine has zero mean camber airfoil blades vertically pivoted at the outer ends of pairs of radius arms. The inner ends of the radius arms are fixed to a rotating mast. Each blade is provided with a steering vane. The deflection of each vane with respect to its associated blade is controlled by a cam toggle mechanism. The disclosed cam toggle mechanism includes a double-faced face cam, having a closed cam track on its upper face and another closed cam track on its lower face. Each cam track consists of two circular dwell portions.

Abstract: A program control device is described having a rotatably driven program control body and a plurality of stationary actuatable programming members. These members are positioned adjacent a periphery of the body at different locations transverse to the direction of rotation of the body. One or more tabs each having a plurality of selectively removable contact segments are provided and demountable means support the tabs on the program control body adjacent its periphery for transport past and engagement of the programming members.

Abstract: A washer is adjustably connected to a driving member of a cam assembly and is coupled to a cam means of the cam assembly.

Abstract: A timing mechanism has an intermittent drive mechanism disposed in axial alignment with a cam means and between an end plate of the timer housing and a plate carrying a constant speed drive means.There is also included an adjusting means permitting manual setting of the cam means with respect to the switches responsive thereto.

Abstract: An interval timer providing a relatively large number of settings between two extreme time intervals wherein two cooperating snail gears drive a drum and a cam, and wherein a partial gear disengages a motor drive means from one of the snail gears to intermittently stop the snail gears' rotation.

Abstract: A drilling machine capable of rapid change over for drilling different parts, and which has stations for simultaneously, or sequentially, drilling holes in a particular part. The unit includes means for positively positioning the part, and gripping the part, and rotating or indexing the part to different rotational positions for the drilling operation. Control means are utilized for positively and precisely positioning the part for the various drilling operations.

Abstract: A programmer includes an intermittently rotating drum, having thereon a series of actuators arranged in a pre-selected manner, for actuating in a predetermined order, a plurality of devices, such as fluid valves, each of which, when actuated, causes an operation to be performed. The drum is indexed by a stepping motor controlled by impulses of energy to a pilot valve in response to rotation of the drum. The actuators are removably mounted on the drum, so that the programming of the series of operations as to the order thereof, and duration of each, can be done quickly and easily, in advance. Individual valves can also be shut off when not needed.

Abstract: A timing device in combination with a thermostatic control whereby heating units of the type used for heating structures such as buildings can be automatically turned off during predetermined periods, as when such buildings are unoccupied, the device comprising a clock-like motor coupled to a plurality of cam discs adjustable about the output shaft of the clock mechanism, the cams including cam heads to operate control switches engaging therewith.

Abstract: A remote lighting control for box mounted lamps which permits one or more wall switch controlled lamps to be operated on a selected time basis by creating a circuit across the normally opened wall mounted switches.

Abstract: In a timing relay including an indexing gear wheel driven by a clutched gear wheel which is driven by an electric motor and in which an actuating element is controlled by means of a cam coupled to the indexing gear wheel with the actuating element being used to operate contact elements on displacement thereof, the actuating element is disposed parallel to the indexing gear wheel and is also arranged to control engagement and disengagement of the clutched gear wheel with the indexing gear wheel.

Abstract: Adjustable cam actuated switch mechanism of the type in which the switch is operated by a rotating cam means on a timing shaft. The cam means includes a cam plate that is rotatable relative to the timing shaft and the cam plate is adjustably connected to the shaft through a differential gear mechanism including a pair of spur gears of like pitch diameter but having relatively different number of teeth, one of which is drivingly connected to the timing shaft and the other of which is drivingly connected to the cam plate and a pinion gear that meshes with both spur gears and is carried by a housing that encloses the spur gears and which is rotatable relative to the timing shaft to angularly adjust the cam relative to the shaft.

Abstract: A set of removable combination cams has an assembly of identical rotary components mounted on a common rotary shaft and carrying removable cams for operation of switches. The rotary components are coupled together in such a manner that they can move relatively perpendicular to the axis of rotation, so that at least a portion of the periphery of one of the components is uncovered to allow fitting of the cam elements. Thus, the cam elements can be fitted without dismantling the assembly, and without changing the relative angular positioning of the rotary components, and without utilising resilient deformation of the materials employed, whilst retaining small axial dimensions for the assembly.