US3643771A

US3643771A - Medal stamping machine

Info

Publication number: US3643771A
Application number: US842295A
Authority: US
Inventors: Kusutugu Takebe
Original assignee: Individual
Current assignee: Individual
Priority date: 1969-07-16
Filing date: 1969-07-16
Publication date: 1972-02-22
Anticipated expiration: 1989-02-22

Abstract

A medal stamping device having a finger dial, with a stamp disk beneath the dial, having alpha-numeric symbols, a hammer on one side and a revolvable medal receiver on the other side. Alphanumeric symbols can be hammered into a medal on the medal receiver by dialing. The device may be coin operated by adding a coin detector and stopper. The dial rotation is stopped unless the correct coin is detected.

Description

11111199 Stafies Paiem 1151 3,643,77 1 Takebe Feb. 22, 1972 [54] MEDAL STAMPING MACHINE 809,591 1/1906 Heene ..197/6.7 8 1,783 2 1906 L ..l97 6.7 [721 inventor Takebe 1 494 839 5/1924 ..l97/6.7 chrome-Abiko, Sumiyoshi-ku, Osaka-shi, 1927 Heene [97/6] Osaka-f, Japan 2,739,688 3/1956 Ehemann. .197 47 2 FHcd; Ju|y 1 19 1 3,011,615 12/1961 lnoue 1 ..l97/6.4 3,330,396 7/1967 James ..197/6.7 X [211 AppLNoy. 842,295

Primary Examiner-Edgar S. Burr 52 us. 01 ..l97/6.7, 197/46 Oulevolk [51] Int. Cl. ..B4lj l/ A [58] Field of Search ..197/6.4, 6.7, 47, 46 [57] ABSTR CT A medal stamping device having a finger dial, with a stamp [56] R fe Ci d disk beneath the dial, having alpha-numeric symbols, a hammer on one side and a revolvable medal receiver on the UNITED STATES PATENTS other side. Alpha-numeric symbols can be hammered into a medal on the medal receiver by dialing. The device may be 544,193 8/1895 P1ckles et a1 ..197/6.7 coin operated by adding a coin detector and stoppen The dial 612,892 Bradley rotation is pp unless the correct i i detececi 716,064 12/1902 Lavery ......197/6.7 750,432 1/1904 Casler et a1 ..197/6.7 2 Claims, 6 Drawing Figures (I a Q 19 PAIENIEBrzazz m2 SHEET 1 OF 5 INVENTOR W TaM-Q BY (f ATTORNEY PAIENTEDrwzz m2 SHEET 3 OF 5 INVENTOR BY ATTORNEY PAIENTEDrwz'z m2 3. 43 771 I SHEET I; 0F 5 m N N w (.0 P

INVENTOR (W W 7 M ATTORNEY MEDAL STAMPING MACHINE 'he can have it readily stamped with his own name, the date or the like thereupon. However, a method requiring manual stamping with a hammer is of no useful value for this purpose.

The object of. this invention is to provide a stamping machine which can automatically stamp marks on any required place of a medal by a very simple process of fixing the medal to a required position on the machine and revolving a dial to a position corresponding to the required letter one after another, thus enabling anybody to stamp marks on th medal without difficulty.

The foregoing object is attained by the improvement, combination and operation of each part constituting the invention, and the preferred embodiments thereof are described in the detailed description set forth herein and the drawings annexed hereto. g

The invention comprises a case, a dial provided inan appropriate part of the case, a medal receiver into which the medal is fitted, stamps with which to stamp marks on the medal, a stamping hammer which operates when the dial is revolved manually at a required angle, a driving mechanism which revolves a medal receiver at a regular pitch each time a mark is stamped on the medal, an ejector which ejects the medal from the receiver at the termination of the stamping process.

Of the annexed drawing: I

FIG. 1 is a perspective view showing the complete body of the stamping machine according to the invention;

FIG. 2 is a lateral view of a longitudinal section of the essential part of the stamping machine ofthe invention; b

FIG. 3 is a sectional view cut in the arrow-indicated direction along the line 1-1 in FIG. 2;

FIG. 4 is a perspective view with portions broken away showing the hammer and the stamping part;

FIG. 5 is a plan view showing the driving mechanism of the medal receiver; and

FIG. 6 is a perspective view of a medal stamped with marks by the stamping machine of the invention. I

The embodiment shows a stamping machine which is operable by throwing in a coin, all the devices'being built inside the machine case 11, adescription plate 12 being provided in the rear on the upper part of the machine case 11.

A disc-shaped dial l3 and a coin slot 14 are provided at the front on the upper surface of the machinecase 11, the upper part ofthe medal receiver 16 appearing from inside, the recess provided on the front surface ofthe machine case 11.

As illustrated in FIG. 2, the dial 13 is secured to the upper end of a shaft 19 revolvably fitted into a bearing 18 provided on a frame inside the machine case 11.

A stamp-mounting disc 21 is securely fixed halfway'down the foregoing shaft 19, stamps 26 being elevated and fitted into

vertical holes

22, 23 which are spaced penetrating through the upper and

lower flanges

24, 25 on the external periphery of the stamp mounting disc 21 as shown in FIG. 4.

In each vertical hole 22 is formed a vertical groove 27 reaching the vertical hole 22 from the external periphery of the flange 24, the breadth of the said vertical groove 27 being narrower than the diameter of the vertical hole 22, a pair of pins 28 erected on the stamp 26 slidably fitting into the said groove 27, thereby preventing the stamp 26 from revolving,.a spring 29 being fitted between the lower pin 28 and the flange 25 so as to constantly push up the stamp 26.

The numeral 30 designates a stay secured to the frame 17, the left-hand end of a rock lever 32 being pivoted by an axis 33 on the terminal part of an arm 31 which is secured to the outside of the upper part of the stay 30, the rock lever 32 reaching the external periphery of the stamp mounting disc 21 through a vertically oblong hole 34 of the stay 30, a hammer 35 secured to the right-hand end of the rock lever 32 being located above the upper end of the stamp 26.-

An electromagnet 36 is secured to the stay 30. On the upper end of a movable iron core 37 is pivoted the lower end of a connecting rod 38 by an axis 20. The upper end of the connecting rod 38 is in turn pivoted by an axis 39 on the middle part of the rock lever 32, a contractable spring 40 being stretched between the stay 30 and the upper end'ofthe axis 20 so that the movable iron core 37 will be drawn up by the spring 40 when the coil of the electromagnet is not charged and the movable iron core 37 will be magnetically pulled down against the spring when the coil of the electromagnet is charged. I

As illustrated in FIG. 3, an electromagnet 42 is securedto the left-hand rear side of a stay 41 provided on the back of the frame 17. Themovable iron core 43 of theelectromagnet 42 is so arranged as to make a reciprocating motion toward and above the foregoing stamp mounting disc 21, at the end of the iron core 43 and isprovided a stopper 44 which prevents the stamp mounting disc 21 from'revolving by thrusting its end between the stamps 26 mounted on the said disc 21 Between the movableiron core 43' and the pin provided on the right-hand rear side of the stay 41 is stretched a contractable spring 45 which is constantly causing the stopper 44 to fit between the stamps, the stopper 44 retreating against the spring 45 when the coil of the electromagnet is charged so that the stopper 44 will slip off from between the stamps 26, thereby allowing the dial 1 3 and the stamp mounting disc 21 to revolve freely. v

As indicated in FIGS. 2 and 3, the base of an arm 46 is revolvably fitted to the shaft 19, the front end of a connecting rod 47 being pivoted at the end of the said arm 46 by means of an axis 48. A

' As shown in FIG. 3, a longitudinal axis 48 is revolvably fitted to the right-hand rearpart of the frame '17, the external end of a piece 49 secured to the said longitudinal axis 48 being pivoted on the rear end of the foregoing connecting rod 47 by an axis 50. The middle part of a rockpiece 51 is secured to the said longitudinal axis 48,- a contractile spring 53 stretched between the. rear end thereof and the. end of an arm 52 secured to the left-hand rear partof the frame 17 pulling the I rear endof the rockpiece 51 to theleft-hand direction. At the front end of the said rockpiece 51 is provided a hook 54 which prevents the clockwise revolution of the disc 21 by engaging thestamps 26 thereof when said rockpiece 51 revolves against the spring 53, i.e., clockwiselin FIG. 3. v, 4

As shown in FIG. 2, a piece 55 provided upwardly adjacent the terminal part of the foregoing arm 46 reaches the lower part of the dial 13 after loosely penetrating through an aperture 56 which is concentric with the shaft 19 provided'on the upper surface of the machine case 11, the front end of piece 55 being bent upward along the external periphery of the dial 13 without being brought in contact therewith, the further end of the piece 55 which is placed above the external periphery of the dial 13 without being brought in contact therewith being formed into a fingertip receiver 57, fingertip-receiving holes 58 which are less in number by one than the stamps 26 being spaced adjacent the external periphery of the dial 13.

Furthermore, as illustrated in FIG. 2, the lower part of the shaft 19 is provided with a solenoid resilient spring 59, the

lower end thereof being secured to the lower end of the shaft 19, the upper end thereof being secured to the-bearing 18, so that when the dial 13 is revolved clockwise the spring 59 will be biased to produce an anticlockwise resilience.

An upward piece 60 is secure to an appropriate place on the stamp mounting disc 21 as shown in FIG. 3. The right-hand end of the foregoing stay 41 is caused to protrude above the stamp mounting disc 21, it being then so arranged that apiece 60 provided on the stamp-mounting disc 21 which is in the starting position will be brought in contact with the rear end of a rockpiece 62 acting as a stopper which is pivoted on the right-hand end of the stay 41 with a longitudinal axis 61, a

contractable spring 63 being stretched between the front end of the rock piece 62 and the stay so as to give the rockpiece a clockwise revolving force centering on the axis 61. Furthermore, it is so arranged that the rear end of a downward piece formed on the rockpiece 62 will be brought in contact with a receiving piece 64 provided on the stay 41, a screw 65 being screwed into a part ahead of the axis 61 of the rockpiece 62 so that the piece 60 will strike screw 65 when the stamp-mounting disc 21 revolves clockwise by a required angle from the position as illustrated in FIG. 3 (350 in case of the embodiment). The inner end of screw 65 is so arranged as to be received by the external end of stay 41. The revolving force produced by the spring 59 is greater than that of the rock piece 62 produced by the spring 63.

The numeral 66 in FIGS. 2 and 3 designates a rubber brake pressed to the external periphery of the flange 25 beneath the stamp mounting disc 21, the said brake 66 controlling the revolving speed of the disc 21 at the time of its restitution by the resilience of the spring 59.

As shown in FIG. 2, a cylindrical wall 67 is secured around the external periphery of the foregoing medal receiver 16, the upper rim thereof protruding farther upward than the said receiver 16, A receiving ring 68 made of an elastic material, such as rubber and the like, is fitted into a groove formed on the internal periphery of the cylindrical wall 67 protruding farther upward than the receiver 16, the inside diameter of receiving ring 68 being slightly smaller than the outside diameter of the medal, with the result that the medal can be firmly fixed to the receiver by pressing it into the receiving ring 68.

A cylindrical shaft 69 is integrally formed at the lower part of the foregoing medal receiver 16 and is revolvably fitted to a stay 70 secured to the frame 17. A ratchet wheel 71 is secured to the lower part of the receiver 16, a driving ratchet 72 and a pawl 73 are engaged with the ratchet wheel 71 as illustrated in FIG. 5. The rear end of the driving ratchet 72 is pivoted by an axis 76 adjacent the left-hand end of a rock lever 75 whose right-hand end is pivoted by an axis 74 on the stay 70, said driving ratchet 72 being pressed to the ratchet wheel 71 by a contractable spring 77, a contractable spring 78 also being stretched between a part adjacent the left-hand end of the rock lever 75 and a pin 84 at the front part of the stay 70 so as to give a forward revolving force to the rock lever 75.

At the left side on the upper surface ofthe stay 70 is secured an electromagnet 79 provided with an iron core 82 which is movable forward and backward, the rear end 80 of the movable iron core 82 being brought in contact with the left-hand front part of the rock lever 75, so that when the coil of the electromagnet 79 is charged the movable iron core 82 will retreat causing the rock lever 75 to revolve backward against the spring 78, an adjustable stopper 81 which consists of a screw being secured to a sustaining piece provided on the stay in such a manner as will be located in the front part of the said movable iron core 82-, the teeth of the ratchet wheel 72, the shape of the driving ratchet 72 and the position of the stopper 81 being so determined that, when the electromagnet 79 is demagnetized, the rock lever 75 will be restituted by the spring 78, thereby pushing back the front end of the iron core 82 until it strikes the stopper 81, simultaneously the driving ratchet 72 causing the ratchet wheel 71 to revolve by the required pitch.

The pawl 73 is formed at one side in the middle part of the rock lever 83, the rear end thereof being pivoted on the stay 70 by the foregoing axis 74. A contractable spring 85 which serves to press the pawl 73 to the ratchet wheel 71 is stretched between the front end of the rock lever 83 and the pin 84.

Furthermore, as indicated in FIG. 2, a penetrating hole 89 inside the cylindrical shaft 69 opens on the medal receiver 16 after penetrating through the center thereof, a push rod 86 being slidably fitted into the said penetrating hole 89. At the upper end of the push rod 86 is formed a head of a large diameter 87, a shoulder 88 being formed to receive the said head of a large diameter 87 on the internal side of the upper end of the penetrating hole 89.

The lower end of the push rod 86 protrudes from the lower end of the cylindrical shaft 69, the lower end thereof being linked with upper end of the movable iron core 91 of the electromagnet 90. The said electromagnet is secured to a mounting frame 92 provided at the lower part of the stay 70, it being so arranged that, when the electromagnet 90 is charged, the movable iron core 91 will ascend causing the head of a large diameter 87 of the push rod 86 linked to the upper end thereof to protrude from the upper surface of the medal receiver 16, thereby ejecting the medal which has been fitted into the receiver 16.

As shown in FIG. 3, a microswitch 93 is secured to the righthand rear side of the frame 17, said microswitch 93 being operated by the foregoing rockpiece 51. The numeral 94 designates a microswitch which is operated by the rock lever 32 when the rock lever 32 descends and the hammer 35 strikes the upper end of the stamp 26, the said microswitch 93 being secured to a mounting piece 95 provided on the stay 30.

The numeral 96 in FIG. 2 designates a microswitch fixed to a mounting piece 97 secured to the frame 17, the said microswitch 96 being operated by an operating lever 98 fixed to the movable iron core 91 when the said iron core 91 ascends.

Inside the machine case 11, though not illustrated in the drawing, is provide a coin selector of the commonly known system, which selects the coins thrown in through the slot 14, sending an electric current to the electromagnet 42 by giving an activating signal only when the right coin is thrown in and sending the right coin into the coin storage box.

In the embodiment illustrated, 36 stamps 26 are arranged in the

vertical holes

22, 23 in the circumferential part of the stamp-mounting disc 21 with regular spacing, that is, leaving a central angle of 10 between each other, the stamps being so arranged that the lower parts thereof will stamp the Roman alphabet of 26 letters and the figures ranging from O to 9 plus a dot, 35 stamps sufficing since the letter I is combined with numeral l and the letter O is combined with the numeral 0, the remaining one stamp being reserved for blank stamping, the axial center of the said stamp for blank stamping, as illustrated in FIG. 3, corresponding exactly with the axial center of the hammer 35 in the prestarting state in which the piece 60 on the stamp-mounting disc 21 is in contact with the rockpiece 62 acting as a stopper, it being so arranged that the center of the stamp 26 which is coaxial with the hammer 35 will be located adjacent the circumferential part of the medal fitted into the medal receiver 16.

The fingertip-receiving holes 58 of the dial 13, comprising 35 holes, are arranged leaving a central angle of 10 between each other, there being no fingertip receiving hole directly under the finger stopper 67 in the prestarting state.

As shown in FIG. 1, by the side of each fingertip-receiving hole 58 is marked the same letter or figure as is stamped by the stamp 26 which comes exactly under the hammer 35 when the required fingertip-receiving hole 58 is revolved until the finger strikes the finger stopper 57. Furthermore, a blank forwarding switch 99 and a termination switch 100 are provided by the side ofthe dial 13 on the machine case 11.

The mechanism functions as follows. In the state before a coin is thrown in, the dial 13 and the stamp-mounting disc 21 are at the starting position respectively as illustrated in FIGS. 1 and 3, it being impossible to revolve the dial 13 even by thrusting a finger into the fingertip-receiving hole 58 because the stopper 44 prevents the revolution of the disc 21 by fitting between the stamps 26.

First, a medal to be stamped is placed on the medal receiver and tightly fitted into the receiving ring 68. Next, the right coin is thrown in through the slot 14. Then, the coin selector is activated, magnetizing the electromagnet 42 by feeding it with an electric current, the movable iron core 43 and the stopper 44 consequently retreating against the resistance of the spring from between the stamps 26, thereby putting the dial 13 in a revolvable state. In this state, the coin drops from the coin selector into the coin storing part, but the electromagnet 42 should be kept magnetized by a sustaining circuit making use ofa relay or the like.

Now, if the dial 13 is revolved clockwise as indicated by arrow in FIG. 1 by thrusting a finger into the required fingertip-receiving hole 58, for instance, the hole corresponding to the letter T, until the finger strikes the finger stopper 57, the arm 46 which is integral with the finger stopper 57 pulls the linking lever 47 as shown in FIG. 3 by slightly revolving in the same direction as the dial 13, with the result that the piece 49 linked with the linking lever 47 slightly revolves clockwise together with the vertical axis 48. Consequently, the rockpiece 51 which is integral with the vertical axis 48 revolves clockwise, unmovably securing the stamp-mounting disc 21 and the dial 13 by engaging the hook 54 at the front end of the rockpiece 51 with the stamp 26 located at the side thereof, the stamp 26 exactly corresponding to T indicated by the fingertip-receiving hole 58 being coaxially located at this moment directly under the hammer 35. On the other hand, simultaneously as the hook 54 engages the stamp 26 the rockpiece 51 activates the microswitch 93 with the result that the electromagnet 36 is charged and magnetized by the operation of the relay, the movable iron core 37 being lowered against the spring 40, the rock lever 32 moving downward, the hammer 35 at the end thereof striking the stamp 26 directly thereunder, the letter T being thus stamped on the circumferential part ofthe medal placed on the medal receiver 16.

Simultaneously as the rock lever 32 descends and the hammer 35 strikes the stamp 26 as described above, one part of the said rock lever 32 activates the microswitch 94. When the said microswitch 94 is activated, the electric current to the electromagnet 36 is shut off, demagnetizing the said electromagnet 36, the hammer 35 being lifted and restituted together with the rock lever 32 by the spring 40. (The circuit is so arranged that the electromagnet 36 will not be magnetized even if the switch 93 is still in an operating state when the rock lever 32 rises and leaves the switch 94).

When the electromagnet 36 is magnetized as described above, the electromagnet 79 is also magnetized simultaneously, with the result that the movable iron core 82 retracts the driving ratchet 72 by retreating in the arrow-indicated direction in FIG. 5 and pushing the left-hand end of the rock lever 75 by the rear end part 80 thereof against the spring 78. In this case, however, the driving ratchet 72 does not engage the teeth of the ratchet wheel 71 and moreover the ratchet wheel 71 is unmovably arrested by the pawl 73, as a result of which the medal receiver 16 cannot move during the stamping process. Simultaneously as the electromagnet 36 is demagnetized and the hammer 35 is lifted the electromagnet 79 is also demagnetized, liberating the movable iron core 82, as a result of which the rock lever 75 and the driving ratchet 72 proceed drawn by the spring 78, moving the stamp corresponding to the letter just stamped anticlockwise by one pitch by revolving the ratchet wheel 71 in the arrow-indicated direction in FIG. 5.

Then, if the finger is withdrawn from the fingertip-receiving hole 58 of the dial 13, the dial 13 and the stamp mounting disc 21 are restituted to the original positions respectively by the spring 59, the rock piece 51 being pressed again to the switch 93 and restored to the state immediately after the coin has been thrown in, the electromagnet 42 remaining magnetized then.

If the finger is thrust in the fingertip-receiving hole 58 on the dial 13 corresponding to the letter A, for instance, and the same process as before is repeated, the letter A is stamped next to the letter T which has been previously stamped, the medal receiver 16 revolving further anticlockwise by one pitch.

The required combination of letters can be stamped by repeating the foregoing process as illustrated in FIG. 6.

If the blank-forwarding switch 99 is pressed, the coin receiver 16 revolves by one pitch without stamping, the electromagnet 79 alone being charged. By this method the medal can be revolved with no mark stamped thereupon, if so desired.

When all the required letters have been stamped, if the switch 100 is pressed, the electromagnet is magnetized, the movable iron core ascending, lifting the push rod 86, as a result of which the medal on the medal receiver 16 is ejected.

As described heretofore, when the push rod 86 ascends the operating lever 98 provided at the lower end of the movable iron core 91 activates the microswitch 96 with the result that the circuit of the electromagnet is cut off, the electromagnet being demagnetized, the stopper 44 being restored by the spring 45, the front end thereof entering between the stamps 26, thereby preventing the dial 13 and the stamp mounting disc 21 from revolving.

Therefore, the inactivated original state is sustained until another coin is thrown in again through the slot 14.

If a mechanism which enables to stamp without throwing in a coin is required, the requirement can be met simply by omitting the coin selector, the stopper 44 to be activated thereby and the like.

The invention, as described heretofore, makes it possible to stamp any required letters, figures or combination thereof on the medal by fitting it on the medal receiver 16 and revolving the dial 13 by a finger thrust into the required fingertip-receiving hole 58 until the finger strikes the finger stopper 57 one after another. Moreover, since it is so arranged that the coin receiver revolves by one pitch at each stamping operation, each mark stamped on the medal is accurately spaced.

Furthermore, since the stamping is effected with a constant force by the electromagnet 36, the invention enables anybody to obtain marks uniformly and beautifully stamped. The invention also has many other advantages, for instance, it can be turned into a fee-charging stamping machine simply by providing it with a mechanism which makes it possible to revolve the dial unless a right coin is thrown in.

What is claimed is:

l. A medal stamping machine comprising:

a. a dial, having a number of spaced fingertip receiving holes (58) thereon;

b. a stamp-mounting disk (21) disposed under said dial and revolving therewith having a number of stamps (26) elevatedly mounted with respect to the disk arranged on the external periphery of said mounting disk, the spacing of said stamps being the same as the spacing of said finger receiving holes (58), springs (29) sustaining said stamps upwards;

c. a hammer (35) located above said stamps so that any stamp required may be placed under said hammer in order for said hammer to strike said stamp, an electromagnet (42) disposed to activate said hammer and a return spring (40) to return said hammer;

d. a revolvable medal receiver (16) disposed under said hammer so that said stamp mounting disk is between said hammer and said medal receiver so disposed that the lower end of the stamp located under said hammer will strike a part of a medal on said medal receiver when said hammer strikes;

a restitution spring (59) coupled to said dial and said stamp mounting disk and so biased as to tend to restore said dial and disk to the position they originally had before any rotation;

f. a movably mounted finger stopper (57) adjacent said dial, slightly movable when struck by a finger which is thrust into said fingertip receiving hole after the dial has been revolved adequately by a finger;

g. hammer driving means causing a stamp to stop exactly under the hammer (35) including fixing means (54) fixing the dial and stamp mounting disk when said finger stopper (57) is struck by a finger and hammer release means (93) causing said hammer to ascend after stamping the mark thereunder on a medal on said medal receiver (16) by supplying an electric current to said electromagnet; and,

h. medal receiver driving equipment connected to the medal receiver, causing said medal receiver to revolve in a predetermined direction by the required angle during the ascent of the hammer after stamping the mark.

2. In the medal stamping machine as claimed in claim 1, in-

cluding an elevatable push rod provided inside the medal receiver, a push rod driving equipment also provided therein which causes the said push rod to ascend and eject the medal out ofthe medal receiver by the manual operation ofa switch

Claims

1. A medal stamping machine comprising: a. a dial, having a number of spaced fingertip receiving holes (58) thereon; b. a stamp-mounting disk (21) disposed under said dial and revolving therewith having a number of stamps (26) elevatedly mounted with respect to the disk arranged on the external periphery of said mounting disk, the spacing of said stamps being the same as the spacing of said finger receiving holes (58), springs (29) sustaining said stamps upwards; c. a hammer (35) located above said stamps so that any stamp required may be placed under said hammer in order for said hammer to strike said stamp, an electromagnet (42) disposed to activate said hammer and a return spring (40) to return said hammer; d. a revolvable medal receiver (16) disposed under said hammer so that said stamp mounting disk is between said hammer and said medal receiver so disposed that the lower end of the stamp located under said hammer will strike a part of a medal on said medal receiver when said hammer strikes; e. a restitution spring (59) coupled to said dial and said stamp mounting disk and so biased as to tend to restore said dial and disk to the position they originally had before any rotation; f. a movably mounted finger stopper (57) adjacent said dial, slightly movable when struck by a finger which is thrust into said fingertip receiving hole after the dial has been revolved adequately by a finger; g. hammer driving means causing a stamp to stop exactly under the hammer (35) including fixing means (54) fixing the dial and stamp mounting disk when said finger stopper (57) is struck by a finger and hammer release means (93) causing said hammer to ascend after stamping the mark thereunder on a medal on said medal receiver (16) by supplying an electric current to said electromagnet; and, h. medal receiver driving equipment connected to the medal receiver, causing said medal receiver to revolve in a predetermined direction by the required angle during the ascent of the hammer after stamping the mark.

2. In the medal stamping machine as claimed in claim 1, including an elevatable push rod provided inside the medal receiver, a push rod driving equipment also provided therein which causes the said push rod to ascend and eject the medal out of the medal receiver by the manual operation of a switch.