Title:
Target carrier
United States Patent 2344829


Abstract:
This invention relates to improvements in target apparatus for shooting ranges and more particularly to an improved target carrier and means for controlling the operation thereof. In a shooting range, it is desirable to have some means of moving the targets to the firing position, and for...



Inventors:
Mcavoy, Frank E.
Application Number:
US34970540A
Publication Date:
03/21/1944
Filing Date:
08/02/1940
Assignee:
GEN BRONZE CORP
Primary Class:
Other Classes:
104/178, 192/140, 273/406, 318/265, 318/468, 318/754
International Classes:
F41J7/02
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Description:

This invention relates to improvements in target apparatus for shooting ranges and more particularly to an improved target carrier and means for controlling the operation thereof.

In a shooting range, it is desirable to have some means of moving the targets to the firing position, and for positioning a new target without the shooter having to walk onto the range to obtain the target. It has been proposed heretofore to provide a crank mechanism whereby at 1 the end of the shooting the shooter may turn the crank, and by suitable pulleys and cords, move the target to the firing position. This is troublesome, however, in that it requires the shooter's time to operate the crank mechanism both in I bringing the target to him at the shooting position and for returning a new target to the target position.

It is desirable to have the target carriers automatic in operation so that upon the initiation of a signal, the target carrier will move from target position to a firing position and automatically stop. Similarly, when sending a new target to the target position, it is desirable that the carrier should automatically stop when the target reaches the desired position. Such an arrangement would permit the shooter to reload his gun and be engaged in other activity while the targets are being brought to and from target position. In such a mechanism, however, it is not practical to provide electric control means at the target position for stopping the target, since such electric controls are apt to be hit by bullets with resulting damage to the control, or create short circuits and fire hazards.

In accordance with my invention I have provided an automatic control of the type described above as desirable for automatically stopping the target at both firing and target positions and with all of the electric wiring, driving and control means located out of the range of fire, so that it is impossible to be hit by stray bullets.

One of the objects of the present invention is to provide an improved power driven target carrier which is automatic in operation and which will automatically position the target at the desired position on the range and automatically return it to firing position.

Another object of the present invention is to provide an improved target carrier which is electrically operated and wherein the electric motor, controls and wiring are all located well out of the line of fire and preferably near the firing position.

A further object of the invention is to provide an improved target carrier and controls therefor which are relatively simple in construction and economical to install and operate.

The above and additional objects of the invention will become more apparent upon consideration of the following detailed description when read in connection with the accompanying drawings, in which: Figure 1 is a diagrammatical view in side elevation with parts broken away of a shooting range equipped with the improved target carrier of the present invention; Figure 2 is a front view of a target positioning and stabilizing means with a target carriage in o position thereon; Figure 3 is a wiring diagram of the controls for the target carrier; Figure 4 is a plan view, partly in section of the target stopping a stabilizing means; and 5 Figure 5 is a side view, paltly in section of the target carrier.

Referring to Figure 1 of the drawings, a booth is shown provided with a bench 12 which determines the firing position 14 for the marksman.

20 A plurality of such booths are normally arranged side by side at one end of the shooting range while target positions 1C, 16a and 1Ib are located in front of the pit 18. The pit is provided with the usual back stop 20 and sand trap 20a.

A, A carriage 21 is provided to support a target for movement on a trolley wire 22 extending between the firing and target positions. The wire 22 is suitably anchored at both ends by eyebolts 24 and maintained taut by a turnbuckle 30 26 connected to the wire at the booth 10.

The carriage 21 comprises a pair of spaced parallel plates 28 and 29 connected by bolts 30 or other suitable means. Between the plates 28 and 29 are a pair of spaced apart pulley wheels 12 35 and 34 adapted to ride upon the wire 22. Depending from the plates 28 and 29 is a square rod 36 which is provided with a target clip 38 on the back side thereof. The rod 36 is suitably shaped at the upper end for positioning between 40 the plates 28 and 29 and suitably secured thereto at 39. The lower end of the rod 36 is provided with a cored hole 40 and a thumb screw 42 for fastening extension rods to fit all types of targets. In order to minimize undesirable ricochets, 45 the carriage 21 and the equipment associated therewith are provided with surfaces so shaped that no flat surfaces face toward the firing position.

The target carriage is provided with an eye50 member 44, to which suitable motivating means, such as an endless cord 46, is connected. The cord 46 is suitably supported by pulleys 47 and by a motor pulley 48 driven by a reversible motor 50. A spring 54 is provided in the connection .5 between the cord 4i and the eye-member 44 to maintain the cord under tension.

S Located adjacent the target and firing positions are springs 56 adapted to engage and stop the target carriage when the carriage reaches o6 either of the positions. Located on opposite sides of the wire 22 are a pair of stabilizing bars IT and II, the forward ends of which are bent downwardly to engage stabilizing bar 59 extending laterally from both sides of the carriage.

This stabilling feature minimizes greatly all tendency for the carriage to swing back and forth when brought to a stop.

It is sometimes desirable to provide a stop position forward of the back stop position II. For example, where the maximum depth of the range is 150 feet, it may be desirable to have a shorter range, such as 100 or 50 feet. One or more intermediate stops may therefore be provided in association with the target carrier at positions I la and lib. The intermediate stop may comprise tubular members j6 suitably mounted in bearings $4 on the side walls of the shooting range. Mounted on the tubular members 63 are a pair of suitably shaped rods 66 and 61 disposed on opposite sides of the wire 22. These rods when brought into target stopping position provide a cam lifting surface, similarly as in the case of the end stabilizing rods II and 58, to engage the stabilizing bars I1 and stop the target carriage.

The tubular members 63 are provided with levers 68 which are connected by cables 69 to control levers 16 located near the firing position.

Springs 8ll attached to levers 68 urge the rods 66 and IT into active or stabilizing position when they are not held in inactive position by the control levers 16. Thus by manipulating the levers 18 the marksman or range master may determine the depth of range to be used.

In order to avoid any fire hazard it is important to so arrange the electric wiring and control'elements near the firing position and well out of the line of firing so as to avoid injury by ricochet bullets. This briefly is accomplished by the present invention by locating the driving motor and the controls therefor, including an automatic motor deenergizing device 6I, near the firing position.

The motor deenergizing device 66 is provided with a puliey 62 over which the cord 46 passes.

As hereinafter described in detail, the movement of the cord upon energization of the driving motor 5I actuates the control 60 to maintain the motor energized during movement of the carriage from one position to the other. When the carriage reaches a position at which it is stopped, the movement of the cord is stopped, causing the pulley 48 of the motor 5I to slip on the cord.

The stopping of the cord 46, however, stops pulley IS of the control device S0, which thereupon effects deenergization of the motor 50. It will thus be apparent that the control device 80 automatically stops the motor 51 as soon as the target reaches the position desired.

ReferrinP'to Figure 3 of the drawings, an automatic control Is shown whereby the marksman may by selectively actuating push buttons FB, SB and RB located closely adjacent the firing position (Fig. 1) cause the target carriage to either move forward, stop, or move in the reverse.

The control circuit for the motor 50 includes a pair of relays 16 and 18. The relay 16 is provided with a series of switch contacts 81 to 88. The relay 18 likewise comprises a series of switch contacts SI to 9I. Interconnecting the movable contacts of the two relays is a pivoted member I10 so arranged that when one relay is energized, the open condition of the contacts of the other relay is insured.

The motor 16 selected for purposes of illustrating the present invention is of the split-phase type. The main winding of the motor Is indicated by the terminals T2 and T4. The auxiliary winding of the motor which determines the direction of the rotation is indicated by the terminals TI and TS. When the motor comes up to speed a centrifugal device 162 opens the circuit to the auxiliary winding.

Assuming that the forward button FB is actuated, the relay 76 will be energized to start the motor to drive the carriage in a forward direction. The relay circuit is as follows: From the line LI a circuit is established through Tire 114, the solenoid winding 89 of relay 71, wire 10, push button FB, push button SB and wires III and 19I to the line L2. The energization of the relay 76 closes the switch contacts II to 81, thereby establishing motor circuits as follows: From the line LI the main motor winding is energized through wire 187, terminals T4, T2, wire III, relay contacts 86, 82 and wire 109 to the line L2.

The auxiliary winding is energized by the circuit LI, relay contacts II, 81, wire III, terminals TI, T3, wire III and relay contacts 81, 68, wire III and line L2. The closing of these circuits energizes the motor to drive the carriage in a forward direction toward the target position Ii.

The initial energization of the relay 71 is such as to initiate rotation of the motor 60 to start movement of the target carriage. The movement of the endless cord 41 at the same time revolves the pulley 62, causing rotation of the governorlike elements III8 which operate to move the element 118a to the left and close the switch III.

This operation takes place almost immediately upon closing of the push button FB so that only momentary closing of the push button is necessary to effect actuation of the control 68 and the closing of the switch I II.

In order to maintain the relay 71 energized after the push button FB has been released, a holding circuit is provided through contacts 84 and II which may be traced from the line LI through wire 184, solenoid 8I, contacts II, 84, wire 112, switch III of control device 6I, wire III, switch SB and wire III to the line L2.

When the target carriage reaches a stop thereby holding the cord 48 from turther movement, the device 60 is caused to quickly decelerate to a stop whereby the elements III effect an opening of the switch I I. This breaks the circuit to the solenoid winding I8, thus opening contacts 82 and 88, thereby deenergizing the motor.

The governor-like elements I18 are mounted on spring members which are extended to hold the switch 115 open when the centrifugal device is not operating. Upon rotation of the device, the centrifugal force of the elements III will cause the springs to bend and extend radially and move the element 118a to the left and close the switch III.

To reverse the operation of the target carriage, the push button RB is closed to energize the relay 78. This relay connects the motor across the main lines with the auxiliary winding of the motor connected in the order reverse to that effected by energization of the relay 71. The reverse circuit may be traced from the line LI through contacts 95, 91, line 120, line III, terminals T3, TI, line 110, line 122 and terminals 82, 96 to the line L2. The main winding of the motor is connected across the main lines LI and L2 in the same order as before, the contacts 03 and 97 being utilized for this purpose. The contacts 94, 98 are provided to complete the holding circuit for the relay 17 in the same manner as contacts 84, 88 for relay 76. The automatic operation of the control device 60 is similar in the reverse direction to that in the forward direction in that the relay 18 is deenergized when the switch 115 is opened. If for any reason the centrifugal device 60 should fail to open the switch 115 after the target has reached the desired position, the motor 50 may be deenergized merely by pushing the push button SB which is in series with the switch 115. In addition, if for any reason the switch 115 should become defective, so as not to close upon actuation of the starting buttons, the device may be operated by holding the buttons FB or RB depressed until the carrier reaches the stop position.

If it is desired to position the target intermediate nne of the stopping positions, this may be done by pressing the push button SB when the target reaches the desired position and the motor is stopped.

In the foregoing, it will be observed that the driving motor, the controlling circuits and the automatic stop switch are all located adjacent the firing position and well out of the line of fire. This safety feature of the arrangement of the improved target carrier of the present invention is highly important from a standpoint of fire protection. By the arrangement of the present invention there is no danger of a ricochet bullet cutting any of the electric controls or wirings and thereby causing short circuits and possibly a fire.

While I have shown and described one embodiment of the invention, it will be readily apparent that many changes and variations in structure and arrangement are possible. For example, any switch means, responsive to the motion of the cord 46, may be used instead of that shown at 118. It is therefore to be understood that the embodiment illustrated and described is intended to be Illustrative of the invention only and not to limit the scope of the following claims.

I claim: 1. In conveying apparatus operable to move a target carrier to a selected one of a plurality of positions from a firing station, a motor, a conveyor adapted to be actuated by said motor to Mnove said carrier to each of said positions, a switch adapted to close circuit means for initiating the operation of said motor, circuit means for maintaining said motor in operation after operation of said switch, a plurality of mechanical stop means one of which is located at each of said positions, means for selectively moving at least one of said stop means so that one of them is in. the path of movement of said carrier to interrupt movement of said conveyor when said carrier reaches said stop means, mechanism operable to stop said motor by breaking the motor actuating circuit, said mechanism including an element responsive to interruptions in the movement of said conveyor by said stop means, and switch and motor circuit means capable of restarting the motor and returning said carrier to the firing station, said motor, switches and circuit means being located adjacent the firing station.

2. In conveying apparatus operable to move a target carrier to a selected one of a plurality of positions from a firing station, a motor;a convey-. 10 or adapted to be actuated by said motor to move said carrier to each of said positions, a switch adapted to close circuit means for initiating the operation of said motor, circuit means for maintaining said motor in operation after operation of said switch, a plurality of mechanical stop means one of which is located at each of said positions, means for selectively moving at least one of said stop means so that one of them is in the path of movement of said carrier to .interrupt movement of said conveyor when said carrier reaches said stop means, centrifugally controlled means actuated by said conveyor to stop said motor by breaking said motor actuating circuit when movement of said conveyor is interrupted by engagement of said carrier with said stop means, and switch and motor circuit means capable of restarting the motor and returning said carrier to the firing station, said motor, switches and circuit means being located adjacent the firing station.

3. In conveying apparatus operable to move a target carrier to a selected one of a series of positions from a firing station, a motor, a conveyor adapted to be actuated by said motor to iove said carrier to each of said positions, a pair of relays, a pair of switches adapted to close circuit means for energizing said relays to initiate operation of asid motor in either forward or reverse directions, a series of mechanical stop means selectively proJectable into the path of movement of said carrier to engage said carrier during movement in forward direction and interrupt movement of said conveyor when said carrier reaches said stop means, a circuit means controlled by said relays for maintaining said motor in operation after operation of one of. said switches, and mechanism operable to stop said motor by breaking the motor actuating circuit, said mechanism including an element responsive to interruptions in the movement of said conveyor, said switch and motor actuating circuit means capable of restarting the motor and returning said carrier to the firing station, said motor, switches and circuit means being located adjacent the firing station.

4. In conveying apparatus operable to move a target carrier to a selected one of a series of positions from a firing station, a motor, a conveyor adapted to be actuated by said motor to move said carrier to each of said positions, a pair of relays, a pair of switches adapted to close circuit means for energizing said relays to initiate operation of said motor in either forward or reverse directions, a series of mechanical stop means selectively projectable into the path of movement of said carrier to edgage said carrier during movement in forward direction and interrupt movement of said conveyor when said carrier reaches said stop means, circuit means controlled by said reiays or maintaining said motor in operation after operation of one of said switches, and centrifugally controlled means actuated by said conveyor, to stop said motor by breaking said motor actuating circuit when movement of said conveyor is interrupted, said switch and motor actuating circuit means capable of restarting the motor and returning said carrier to the firing station, said motor, switches and circuit means being located adjacent the ring station FRANK X. McAVOT.