Abstract: An exercise machine in which four interconnected movable stations are provided, two hand and two foot, one hand and one foot station being connected by a cable by way of pulleys for moving the stations in opposite directions in response to the exertion by the user of a preponderant force upon one of the stations, the other hand and foot station being connected by another cable by way of pulleys for moving the stations in opposite directions in response to the exertion by the user of a preponderant force upon one of the stations, and the two foot stations being connected to one another for moving the foot stations in opposite directions in response to the exertion by the user of a preponderant force upon one of the foot stations.

Abstract: A compound lever bow including oppositely extending rigid limbs each rotatably supporting lever mechanisms. A pair of flexible limbs are secured to the bow overlying respective rigid limbs. A bowstring is connected to each of the lever mechanisms. Also a separate force cable is connected between each terminal end of the flexible limbs and respective lever mechanisms. The lever mechanisms each are provided with a stop limiting rotation thereby preventing an over-center condition. The lever mechanisms include pulleys receiving a synchronizing cable evenly distributing pull forces on the bowstring to the ends of the rigid limbs. The bowstring connections, the force cable connections and the lever mechanism pivot points are placed to provide a second class lever mechanical advantage. Rotation of the lever mechanisms to place the cable connecting points and the lever mechanisms pivot points in a near straight position reduces the shooting-hold force to near zero.

Abstract: The machine disclosed is for particular use in the duo-squat exercising of the legs and provides the proper variation of resistance to movement in all positions when the legs are being moved between the extended and retracted positions and vice versa. The machine includes a negative profile cam to which the force is applied by the user and the negative profile cam has a different length radius (moment arm) at different degrees of rotation. A weight stack is supported by a flexible member reeved over a wheel which has a radius of uniform length and being fixed to rotate with the negative profile cam. The length of the longest radius of the negative profile cam is less than the length of the uniform radius of the wheel so that the amount of force applied by the user is greater than the amount of weight provided by the weight stack.

Abstract: A weight lifting device includes a frame having a weight stack secured to the frame, a force applicator secured to the frame and connected to the weight stack by a hydraulic connector, so that a person, who applies a muscular force to the force applicator, activates the hydraulic connector moves the weight stack and exercises the muscles. The weight stack is connected through a hydraulic system to a force applicator which includes a fluid contained cylinder that has a reciprocating piston that is acted upon by a user to cause fluid to act on and lift a plurality of stacked weight.

Abstract: The disclosure concerns a release mechanism for drawing and releasing the bowstring of free-standing bows in which a triggered-latch mechanism is affixed to sheet of resilient, non-stretchable material shaped to overlie the palm of the archer's hand and to be strapped around his wrist. A thumbhold is provided in the sheet so that the triggered-latch mechanism can be drawn up into the crotch between the forefinger and the thumb and the trigger is positioned in the latch mechanism in position to be easily pulled by the forefinger when the triggered-latch mechanism is so positioned. The triggered-latch mechanism has a trigger and a rotary latch having a latching arm and a cocking arm and complementary detents on the trigger and the latch operative in the cocked position to prevent rotation of the latch, and in the release to permit rotation of the latch.

Abstract: An adjustable leg exercise device is provided which is easily adjustable between a sitting position and a prone position, whereby the body is placed in an ideal position for exercising the quadricep muscles and hamstring muscles respectively. The device preferably includes a floor-engaging support frame and a weight-receiving exercise unit pivotally secured adjacent the upper portion of one end of the support frame. The exercise unit includes a weight-receiving structure for selectively attaching different amounts of weights, to vary the resistance to the pivoting action. Additionally, the unit also presents a pair of leg-engaging regions, the first region positioned for use in the quadricep exercise while the second region is positioned for use in the hamstring exercise. An articulated, flat, padded bench is pivotally secured to the upper portion of the frame, with the bench-frame pivotal connection located adjacent the frame-exercise unit pivotal connection.

Abstract: A launcher for target pigeons of the kind having propellor type wings and which includes a drive unit having a rotating shaft to which a target pigeon is releasably connected. The target pigeon is releasably secured by a retainer head mounted on the rotating shaft and which is actuated by a control rod that is remotely actuated. The drive unit is mounted on a pivot to swivel during a launching operation. In one form, the drive unit is operatively associated with a vane which allows the launcher to oscillate when in operation to launch a target. In another embodiment, the oscillation of the launcher is effected by an eccentric mechanical drive which is connected to the drive unit.

Abstract: A muscle stretching and exercising system provides in a first embodiment a hinged, folding base with folding legs; a detachable user-supporting handle structure. In the extended position the base provides on the top surface a pair of tracks on which two carts run. Each cart has a cushioned pivotal platform on it. A user grasping the handle structure may support one leg on each cart and stretch his or her muscles, particularly those associated with the legs, either by kneeling in whole or in part or by placing other portions of the legs on the carts. Stops and measuring indicia may be provided, as well as quick-release cart removal. A second, non-folding, embodiment may have modified handle structure and line and pulley structure for drawing carts together, either manually or electrically. The handle structure in each embodiment may be adjustable.

Abstract: A device for counteracting knee joint pressure in quadriceps training including a rotatable resistance arm having a foot attachment device connected to the resistance arm where the foot attachment device includes an elastic member and the axis of rotation of the person's knee and of the resistance arm are displaced from one another in such a way that the leg of the user during the stretching out movement is subjected to a tractional force from the elastic member due to the fact that the point of attachment of the attachment device on the foot travels along one arc during the rotational movement that is different from the point of attachment of the attachment device on the resistance arm.

Abstract: An attachment to a ball throwing machine includes a stationary sleeve secured to the ball throwing machine barrel, a movable sleeve mounted for rotation onto the stationary sleeve, and a rotatable deflecting frame of two T-shaped levers with rollers, mounted on said movable sleeve. Rotation of the frame is restricted by stops, and at least one retainer is provided to lock the frame in one of the extreme positions, the retainer having the form of a flat spring connected to one of said levers and controlled by a cable through a helical compression spring.

Abstract: This machine includes a saddle-type seat for supporting the user in substantially an upright position with the legs being maintained in position during use of the machine. A user-actuated lever is provided with a padded roller on one end thereof. The padded roller is adapted to engage the back of the user at a position substantially in alignment with the shoulder blades and the other end of the lever is pivotally supported at a position in substantial alignment with the waist of the user. The other end of the user-actuated lever is operatively connected to weights. The connection between the user-actuated lever and the weights includes a variable radius cam for providing a variable resistance force to lifting and lowering the weights with corresponding movement of the user between a first position with the spine in a forwardly bent position and a second position with the spine in a substantially straight position to provide a full range exercising of the muscles associated with the lower back of the user.

Abstract: A mechanical bowstring release device automatically biased to the locked position having a hollow, preferably generally cylindrical housing having a central space along the length thereof and a bowstring retainer bar pivotably secured to the housing in the space. A string-retaining end of the bar extends into an opening in the front end of the housing. The bar also includes an opposite coupling end. The bar is pivotable between a bowstring-drawing locked position and a bowstring-releasing unlocked position. An elongated lever arm extends longitudinally of and is pivoted in the housing space, the rear portion thereof extending rearwardly of the housing, the front end thereof being adjacent and generally rearward of the retainer coupling end. One or more couplers connect the front end of the lever arm and the coupling end of the bar. A biasing spring automatically urges the front end of the arm into a position which locks the bar.

Abstract: An exercise apparatus is provided which includes a partially threaded receptacle and a handle attached to a selectively rotatable partially threaded rod. The partially threaded rod enables a user to selectively slide the rod into or out of the receptacle or lock the rod in the receptacle in order to perform stretching and pulling exercises in a controlled manner.

Abstract: An exercise device includes a spring mounted handle carried on a base. The base may be carried by a support platform which also supports the user, may be releasably connected to the platform, may be hinged at the platform, or may be secured to a wall. A spring which mounts the handle to the base is an elongate spring and the handle is T-shaped so that a user may manipulate the handle in a plane generally parallel to the base or in a plurality of planes extending through the point of attachment of the spring to the base, the spring constituting an energy storing device which stores energy upon the application of force and releases that energy upon removal of such force.

Abstract: The butt sections of the limbs of a take-down bow are loosely received in inwardly extending sockets in the ends of a bow handle section and are arranged to rock in a fore and aft direction on outer end portions of the rear socket walls. Inwardly extending T slots in the rear socket walls slidably receive headed members fixed in the bow limbs and prevent forward movement of the bow limbs. Members supported near the socket bottoms for fore and aft screw threaded adjustment receive the inner ends of the limbs, and spring pressed detents projecting centrally from the headed members snap into apertures in the rear socket walls when the inner ends of the limbs are properly inserted into the screw threadedly adjustable members.

Abstract: Physical exercise apparatus is disclosed that has a column, a sleeve slidably engaging and lockable at selected positions along the column, a lever pivotally connected to the sleeve and a removable bench connected to the column. Endless elastic bands or torsional springs may be attached to the lever and to the sleeve to provide variable resistance to pivoting of the lever or the lever may be connected to the sleeve so as to restrict pivoting of the lever.

Abstract: An overdraw arrow unit includes a flat elongated bar element having a first planer surface forming a bow attaching portion at one distal end and a second planer surface forming a rest portion at the opposite distal end, with said two surface portions connected by an offset portion positioning said surfaces in an offset but parallel relationship and a U-shaped base rest element attached at the bottom edge of the rest portion along with a central arrow rest located above the base rest element whereby said attaching portion can be secured to an archery bow with the unit extending rearwardly toward the bow string to provide a secondary arrow rest rearwardly from the bow proper allowing the use of shorter arrows with the same bow string draw by an archer.

Abstract: An archery bow stabilizer mounting bracket includes first and second pivotally interconnected members adapted to be secured to a bow and a stabilizer, respectively. The members include detent structures for selectively securing the stabilizer in an operative or inoperative position. The members are resiliently positioned with respect to one another to facilitate operation of the detent structure and to improve the shock-absorbing characteristics of the stabilizer.

Abstract: A device for developing the arm muscles and the general condition of the arm. It is a structure that will develop the power of the arm, both in the forearm, including the wrist, and in the the upper arm. It is particularly suited for developing the arm for the power and technique required in arm wrestling and in making power lifts. The apparatus has a cuff-like shackle component to fit over the forearm, with an attached hand grip member, a holding pedestal for weights, a plurality of weights to fit on the holding pedestal, and a flexible connecting member to connect the cuff-like shackle component to the holding pedestal. The cuff-like shackle component has a positioning member built into the structure to which the flexible connecting member is removably and slideably affixed. The positioning member is arranged so that the flexible connecting member may be conveniently and quickly reset in three different positions for three changes in exercises while the user is utilizing the cuff-like shackle component.

Abstract: The gymnastic implement is so conformed to train all the body's muscles, the resistance to the muscular action being represented by the user's weight. The implement has a board of suitable length for receiving the user's body in extended position and a frame member otherwise associable to said board and forming in its whole a lever system. The frame member has a first pair of parallel rods lying on a common plane, a second pair of parallel rods also lying on a common plane but inclined relative to the plane of said first pair of rods and elements interconnecting the rods of said first and second pairs transversely arranged relative to said board and forming the fulcrum and resistance of said lever system depending on the desired training to be carried out by the user.