Патент USA US2120172код для вставки
June 7, 1938. 2,120,172 c. E. BURNETT ET AL SAFETY DEVICE FOR PUNCH BOARDS Filed Aug. 5 , 1936 6327 31 26,0 7 I 372 $49. 11. ‘ wumko'ns CHARL ES E- B'UR/VE 7' 7" 1N0 .0 MA Y GUM/MAM Patented June 7, 1938 2,120,172 UNITED STATES PATENT ' OFFICE 2,120,172 _ SAFETY DEVICE FOR PUNCH BOARDS Charles E. Burnett and 0 May,,Punta Gerda, Fla. Application August 5, 1936, Serial No. 94,464 '7 Claims. (Cl. 273-139) The present invention relates to punch board - games of the well-known type that are used for amusement and in various ways to assist in the sale of merchandise. One drawback in the use of such boards has been the custom of unscrupulous persons of sur reptitiously punching the boards without inform ing the attendant, or the other players, of such acivity with a consequent loss of revenue to the establishment, or an unfair advantage resulting to the person. Certain devices have been proposed, whereby an indicating mechanism is associated with the punch or with the board, whereby, when a punch is made, a visible or audible signal is actuated. These devices, however, apparently have not proved commercially successful, and one reason appears to be that while in order to actuate the signal a particular punch must be used with the 20 board, they have not provided any means that have necessitated the use of the particular punch in order to successfully operate upon the board. As a consequence nails, matches or other instru ments can be used to punch the board without ' actuating the signal. One object of the present invention is to pro vide a novel system wherein the punch is asso ciated with a signal or indicator, and including novel means whereby the use of an instrument other than the proper or authorized punch, is prevented. ,Another object is to provide a board having novel means whereby only a proper punch may be used to operate successfully upon the board. Still another object is to provide such a struc ture which will not increase the di?iculty of or complicate the punching operation. In the accompanying drawing: Figure 1 is a somewhat diagrammatic eleva 40 tion showing one embodiment of a system using the device. Figure 2 is a perspective view of a punch board. Figure 3 is a detail elevation, partly in section. Figure 4 is an enlarged detail plan view. Figure 5 is an enlarged detail vertical section. Figure 6 is a broken plan view. Figure '7 is a perspective view of a form of punch needle. ' Figure 8 is a view similar to Figure 6 showingr a modi?cation. Figure 9 is a perspective view showing a modi fled form of punch needle used in the modi?ca tion shown in Figure 8. Figures 10 and 11 are perspective views show b1 (it ing still other modi?ed forms of punch needle. Describing the drawing more particularly, a punch board II has a usual body portion i2 formed of any suitable material, and having therethrough vertically disposed bores iii, in which are contained indicators II, which may ad vantageously be folded strips of paper bearing numbers or other indicia. The indicators l4. contained in the bores, are intended to be removed in the well-known manner by means of a punch ing instrument inserted through the top of the board. A special punching device is designated generally I5, and comprises a casing l8, within which may be mounted a counting or registering mechanism H, which is operated to register each stroke of a plunger IS in a well-known manner. 15 The plunger i8 extends from the casing l5, and the end has a socket I9, which is provided with holding means, advantageously as shown clearly in Figure 5, as threads, 20. The plunger I8 is also provided with a circuit 20 closing device, shown in Figure 1 as a spring con tact 2| mounted upon the inner end of the plunger. Associated with the spring contact 2| is a ?xed contact 22 assembled with the device It so that upon the inward movement of the 25 plunger i8, contact will be made between the members 2| and 22. The members 2i and 22 are arranged in a circuit, including wires 23, a source of power, and a signal, as a bell, 24. Itv will be appreciated that a visual signaling device ' 30 may be substituted for the audible device 24. Mounted in the threaded bore 20 of the plunger by means of a threaded head 25, is a punching in strument or needle which comprises a shank 25 extending from the head 25. 35 The punch board II has associated with it and overlying the body portion ii, a sheet of fabric 21 which is preferably relatively stiff, and to some extent puncture-resisting, so that when the needle 26 is pressed downwardly over one of the bores Hi, the fabric 21 will offer sufficient re sistance to the downward movement of the punch to cause the plunger ill to move inwardly with respect to the casing l6, thereby causing the op eration of the register I‘! and closing the switch 45 2l-—22. And overlying the fabric 21 may be a guide sheet 21a having perforations that over lie the bores lit to indicate their positions. From the above description, it will be appre ciated that when the device I5 is used to punch Cr one of the indicators H from the board, that the plunger [8 will be pressed inwardly by the contact of the instrument 26 with the paper, and a signal will be given, indicating that a punch 2 2,1ao,172 ' is being made and the punch will be registered fully using unauthorized implements upon the on the counter. punch board. _ This arrangement is very‘ satisfactory, but it is desired to provide means whereby other ‘instru ments, such as nails or matches will be excluded from the punch board, since their use would avoid the operation of the signal and counter. In order to provide such a structure, the follow ing arrangement is provided. The punch member 20 is formed with a special cross section, which may be of anysuitable de sign.‘ As shown in Figure 7 it is crescent shape, and comprises a wall 28 surrounding a bore 29, and having a slot 30 along one side. Assembled with the body portion I! of the board II is a guard plate 3| which is preferably mounted be tween the body portion i2 and the fabric sheet 21. The guard plate is made of any material which will suitably resist distortion, and is pref 20 erably made of a metal of su?icient thickness to provide the necessary resistance. The guard plate 3| is provided with a plurality of openings 32 that are so spaced that when in assembled relation with the body portion ll! of 25 the bores, one special opening lies within the area of each of the bores. The openings are shaped to correspond with the cross section of the punch ing instrument 26, so that the material surround ing them will closely engage the instrument and 30 will permit its passage, but at the same time will exclude the introduction into the bores I4 of instruments which are not properly shaped to pass through them. The operation of this arrangement will be clear 35 from the foregoing description. ‘ The-advantages of-the described device will be readily appreciated. Its use will prevent a punching of a board unknown to the attendant or owner by the use of improper implements, such as matches or nails. The fact that the plate can be made of such very thin material, renders its cost very low. It will of course be appreciated that the device may be used without an indicator oi.’ 10 any sort, merely by the use of a punch that is arranged to pass through the openings of the guard plate, the intention here being that it will simply prevent unscrupulous persons from apply ing other implements and the attendant may 15 keep the proper punch under his control, or it may be used with a signal, but without a counter. Counting devices, such as indicated at H are generally provided with turn-back devices hav ing operating knobs extending through their cas 20 ings. While such a device is advantageous in the counter used in connection with this device, it will be appreciated that it would be undesirable to afford the opportunity of resetting the counter to persons using the punch. To obviate this pos 25 sibility the turn-back operating device is entirely enclosed in the case and the operating shank ll terminates at or below the surface of the case, so that it cannot be grasped, and the end of the shank is provided with a keyhole 39, into which a 30 key may be inserted to reset the counter. From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art, without further descrip 35 In Figures 8 and 9 a modi?ed form of punching tion, and it will be understood that various instrument and a corresponding form of guard changes in the size, shape, proportion and minor plate are shown. In this modi?cation the open details of construction may be resorted to with-_ out departing from the spirit or sacrificing any 40 of the advantages of the invention. ings 33 of the guard plate are formed by a plural 40 ity of thin slots 34 that are joined together at one and the slots radiating from a center. The needle 35 being used with this form of guard plate, comprises a threaded head 36 for engage What we claim is: i. In a punch board including a body having a plurality of bores therethrough for containing gular adjustment to correspond with the arrange ment of the slots 34. In this form of device, indicators, a guard plate of deformation-resist ing material assembled with the body and having 45 narrow slots therethrough, the said slots being associated respectively with the different bores, the said guard plate at the edges of the slots pre very thin blades may be used due to their mutual venting the removal of indicators from the bores ment in the socket IQ of the plunger and com 45 prises a plurality of thin blades 31 equal in num ber to the slots and arranged as to size and an 50 strengthening effect, and it has been found that blades of steel of a thickness of three thousandths of an inch are perfectly satisfactory, the slots being made four thousandths of an inch in width to' provide ample clearance for the blades 31 and 55 at the same time reduce the possibility of the introduction of other instruments to a minimum. The ends of the blades of such thickness, form a thrusting surface that is ample to push the indi cators I4 from the respective boards. 60 Figures 10 and 11 disclose additional forms in which the punching instruments or needles may be made if desired. From the illustrated forms it will be clear that a great variety of shapes may be used, and that any shape which proves satis factory is included in the scope of the invention. The material making up the needle may be very thin, ordinarily from three to four-thousandths of an inch being ample, because of the arrange— ment of the needles to provide the necessary stiffness to punch through the board and thrust out the indicator. The advantage of such thin material is, of course, that it allows the corre sponding openings in the guard plates to be very 75 line and thus increase the diiiiculty of success by an instrument other than one having the cor 50 rect cross sectional design to pass through the slots permitting the insertion only of an instru ment having a cross section ?tting‘the said slots. 2. In a punch board game in combination, a board having bores therethrough for containing 55 indicators, a guard plate assembled with the board and having openings associated with the bores, the said openings each comprising a plu rality of narrow slots joined together at one end of each, and a punch comprising a plurality of 00 blades, each having an edge joined to the edge of the other blade, and arranged to correspond to the arrangement of the slots, the ends of the blades forming a thrusting surface for engaging the indicators in the bores. , 65 3. In a punch board game including a board to be operated upon by a punch, in combination, a punch havingia thin blade for operating upon the board, a device operated by said punch for indicating each operation of the punch upon the 70 board, and a guard plate assembled with the board and having a plurality of narrow slots to permit the punch to be introduced through them to operate upon the board, the portions of the guard plate surrounding the slot preventing the 75 3 9,120,172 introduction of instruments other than thin blades. 4. In a punch board including a body having a plurality of bores therethrough for containing indicators, a guard plate of deformation-resist ing material assembled with the body and hav ing openings therethrough that register with the bores, the said guard plate having projections that extend into the areas of the bores that re 10 strict the openings and permitting the insertion only of an instrument having a cross section shaped to pass the projections. 5; In a punch board including a body having a plurality of bores therethrough for containing indicators, a guard plate of deformation-resist ing material assembled with the body and hav ing therethrough a plurality of curved slots, the said slots being associated respectively with the bores 01 the body, the portions of the guard plate surrounding the slots permitting the insertion only of an instrument having a narrow blade or proper dimensions and correctly curved to pass through the slots. 6. In a punch board game, in combination a body having a plurality of bores therethrough for containing indicators, a guard plate of deforma tion-resisting material assembled with the body and having an opening associated with each of the bores, projections carried by the guard plate and extending respectively into the areas oi’ the bores to restrict the size and shape 01' the open ings, a punching instrument having a blade of proper cross section to pass the projections oi’ the guard plate, and means associated with the punching instrument to indicate each punching 10 operation performed by it. '7. In a punch board game, the combination with a body having a plurality of bores there through for the reception of indicators to be re moved by a punch, and a punch having a thin blade curved transversely to impart rigidity thereto and to a?ord a bearing surface at the end, of a guard plate of deformation-resisting material assembled with the body and having slots therethrough registered with the bores, the said slots being 01' substantially the same size and shape as the cross section or the blade of the punch. CHARLES E. BURNE'I'I‘. 0 MAY.