US2262980A

US2262980A - Weighing scale

Info

Publication number: US2262980A
Application number: US309354A
Authority: US
Inventors: Burns S Watling
Original assignee: WATLING SCALE Co
Current assignee: WATLING SCALE Co
Priority date: 1939-12-15
Filing date: 1939-12-15
Publication date: 1941-11-18
Anticipated expiration: 1958-11-18

Description

Nov. 18, 1941. B. s. wA'rLlNG WEIGHING SCALE l Filed Deo. l5, 1939 5 Sheets-Sheet 1 Nov. 18, 1941.

B. s. wATLlNG l 2,262,980

WEIGHING SCALE Filed Dec. l5, 1959 5 Sheets-Sheet 2 Nov. 1s, 1941. B. s. WATLING 2,262,980

WEIGHING SCALE Filed Deo. 15, 1959 5 Sh"ee\.s-Sheekl 5 l l @la 7 @il/M uml B. s. WATLrNG WEIGHING SCALE Nov. 18, 1941.

Filed Dec.15, 1939 Z? ,Zgg

5 Sheets-Sheet 4 Nov. 18, 1941. B. s. wATLlNG WEIGHING SCALE Filed Dec. l5. 1959V 5 Sheets-Sheet v5 Patented Nov. 18, 1941 WEIGHING SCALE Burns S. Watling,

Chicago, Ill., assignor to Watling Scale Company, Chicago, Ill., a corporation A' of Illinois Application December 15, 1939, serial Ne. 309,354k u n 13 Claims.

This invention relates to weighing scales, and more particularly to a known type of coin-controlled scale wherein the customer or user is given an opportunity to estimate or guess his own weight, and if he guesses his weight correctly the coin is returned to him by the machine.

Scales of this type commonly employ a pair of scale discs, one of which is weight-actuated while the other is manually set by the customer to his estimated weight before the weight-actuated disc is released. If the weight-indicating numbers or marks on the two discs tally or register with each other, the coin is returned. If they do not, the coin is sent to the coin box of the machine.

A scale of this type forms the subject-matter of an application for Letters Patent heretofore led by me on the 3rd day of April, 1939, Serial No. 265,800. In my aforesaid application the two discs are mounted side by side on a common shaft, and the adjacent sides of the manually set disc and the weight-actuated disc are provided, the former with lateral pins and the latter with a corresponding row of holes. By means of a tensioned spring normally locked against action, the manually set disc is shifted toward the Weight-actuated disc. If the estimated weight agrees with the actual weight within a few ounces as shown by the scales on the discs, the pins will pass through the holes, and this will set in action a coin disposal mechanism by which the deposited coin is returned. If the guess is incorrect, a lesser movement of the shiftable disc occurs, and the coin is in that case diverted to the coin box of the machine.

The spring which actuates the disc shifting mechanism is, when a proper coin is deposited, released for action by a manually operated mechanism energized by a horizontal slidable plunger which receives the deposited coin, the latter constituting an elementA of said manuallyv operated mechanism; and, if no coin is deposited, the disc shifting mechanism will not operate.

The coin disposal mechanism is operated to either return the coin to the customer or send it to the coin box by an arm that, in turn, is swung bv a rock shaft constituting an element of the disc-shifting mechanism.

Fast on the shaft which mounts the two discs is a ratchet wheel, and cooperating therewith is a detent pawl which is normally held engaged with the ratchet by a spring, and this pawl is disengaged from the ratchet wheel to permit the weight-actuated scale to turn by a detent release mechanism that includes a rock shaft operatively connected to said detent, `and a spring-impelled member that is rst shifted into a position yto actuate said rock shaft by the manually impelled plunger and is then caused to actuate said rocky and one object of this invention has been to provide a disc shifting mechanism adapted for properly timed cooperation withand actuationby the vertical detent release mechanism Aof my .last mentioned application. Another object has been to provide .an `improved coin disposal mechanism likewise adapted for cooperation with, and actuation by, said detent release mechanism, and selectively controlledy by a movable member of the disc shifting mechanism.

Other objects and inherent advantages of the invention will appear later in the following detailed description of an improved embodiment of theinvention illustrated in thepatent drawings, in which- Fig. 1 is a front elevation of the scale, with the front cover plate removed and the front wall of the cap brokeny out, and showing the detent release mechanism, the disc shifting mechanism, and the coin, disposal mechanism in normal idle positions.

Fig. 2` is a perspective view of the immediate detent pawl lifting and lowering mechanism located in the cap or cover of the scale housing, that is operated by the underlying coin-controlled mechanism.`

Fig. 3 is an enlarged front elevation ofthe coincontrolled detent release mechanism, including a portion of the coin chute with' its front cover plate removed, and also showing in dotted lines an actuating portion of the disc shifting and coin disposal mechanisms that is itself actuated by ra movable element of the detent release mechanism. Y

Fig. 4` is a vertical section on the line 4-4 of Fig. 3. l

section taken on the line l of Fig. 10, showy ing a position of the coin switch in which theV coin goes to the coin box of the scale.

upper end of frame 3|,

parts disclosed and claimed in my aforesaid application Serial No. 265,800.

Again referring to Figs. 1 and 2,v 2B designates the base, 21 the upright portion of the scale casing, 28 a cover or cap mounted onthe upright portion 21 and housing the scale discs, and 29 the scale platform. As usual in scales of this type, the platform 29 is connected through a rod 30, a frame 3| containing a dash pot 32 to-'steady the movement, a pivoted cross-bar 33 on the and flexible straps 34 Y rto pivoted sector cams (not shown) from which Fig. 12 is an enlarged fragmentary vertical section taken on the line |2'.|2 Aof Fig..9, showing a position ofthe coin switch in which the coin is deflected into the coin return chute.

Fig. 13 is a rear elevation of the lower half of Fig. 3, showing in full and dotted lines ex-- treme Ypositionsof the actuating portion of the disc shifting and coin disposalmechanism Athat appears in dottedlines in Fig. 3.

Fig. 14 is an enlarged side elevation of parts of the disc shifting and coin disposal mechanisms appearing in the'lower left-hand corner of Fig. 8, and also showing a gear train andwind vane for slowing the action of a pivoted sector lever that appears in one extreme of its movement.

Fig. 'l5 is a view similar to Fig. 14, but showing the sector vlever at the lopposite yextreme of its movement.

Fig. 16 is a sectional view taken on the line IB-IG of Fig. 14. l

Fig. 17 is an isolated front plan of one 'of the vertically movable plates of the detent release mechanism. k

Fig. 18 is a longitudinal section, on the line |8|8 of Fig. 3, through the foundation plate, one of the vertically slidable plates on vthe foundation plate, and the'sectional push bar that moves said vertically slidable plate downwardly. Fig. 19 is a fperspective elevation of the other vertically movable plate of the detent release mechanism.y

Fig. 20 isa perspective view. of .a coin-arresting pan.

larly Figs. 1, 2, 8, 9 and 10, the scale in which y my present improvements are embodied employs a pair of scale discs 20 and 2| mounted side by side on la shaft .22 the disc 20 being fast on the shaft and weight-actuated, andthe disc 2| being loose on the shaft and manually Vset byv thecustomer to his estimated weight, before the weightactuated disc 2.0 is released, by, turning a knob 23. Disc .2| is Valso shiftable toward and from the weight-actuated disc 20 by mechanism later described. VThe disc 2| Vis yequipped with pins 24 that project toward the disc 20, and the latter is formed with a corresponding number of similarly spacedholes (Fig. v9). If the user has` correctly rguessed his .weight within a few ounces either way, theholes 25 will register `with the pins 24, and when disc 2| is shifted Vsidewise, by mechanism later described, ,the pins will pass through'theholes (Fig. 9.); and, through mechanism later described, the coin is returned to the user. If the guess is incorrect,` the holes do not register with :the pins, and the latter can be moved only into contact Withthe solid portions of the Y disc 20 (Fig. 10), and vin that event the coin is -sentto the cash box of the machine.

The parts as thus far described and shown are substantially identical with corresponding 'Referring to the drawings, and more .particuare suspended swinging counterbalance weights 435; yand from a yoke 36 in which the cross-bar 33 is pivoted a rod 31 extends upwardly and is connected to the lower end of a rack bar 38 that engages with a pinion 39 fast on the disc shaft 22. A detent-I pawl 40, pivoted at 4|, is normally engaged with a ratchet disc 42 fast on the shaft 22 so as to prevent the turning of the scale disc 20 until the detent pawl 40 has been raised* VAll of the above last described parts are old'y and well known, and need not here be more particularly described.

In Fig. 2 I illustrate a simple mechanism'for directly lifting the pawl 4 0 to free the shaftf22 which is adapted to cooperate with the coincontrolled detent release mechanism forming the subject-matter of my aforesaid application Serial No. 309,355, and which is also shown and described in said application. This immediate pawl lifting mechanism comprises a rock shaft 43, oppositely extending yarms 44 and 45 fast on shaft 43, a link 46 pivotally connecting arm 44 to pawl 40, ran upstanding arm 41 also fast on shaft 43, and a pull spring 48 acting on'arm 41 in a direction to normally apply the pawl 40 to the disc 42. Pivoted toand depending vfrom the arm 4'5 is a link 49, to the lower end of which is adjustably attached a foot 50 formed-with a vertical slot 5|` continuous with the lower end of an inclined cam slot 5|', and a laterally offset toe 52. lA down pull on toe 52 releases the detent Y pawl 40.

Since the vertically `disposed coin-controlled detent release mechanism forming Ythe subjectmatter of my aforesaid application Serial No; 309,355 cooperates with and actuates both the disc-shifting mechanism and the coin disposal mechanism of this application, I have herein illustrated the same with suil'cient fullness to` enable its structure and operation to be clearly understood.

Describing this coin-controlled detent release mechanism, in the cap 28 is the receiving mouth 53 of a downwardly extending coin chute partially indicated at 54 in Fig. 1 that communicates at its lower end with an inclined section r55, this latter communicating at its lower end with vthe l upper end of a vertical section 56 (Fig. 3), this latter having a sloping bottom wall 51 over which the coin rolls into a lower vertical section 58 and thence to the coin disposal mechanism.

Formed as an edgewise extension of the rear wall of the chute parts 56, "51 and 58 is a vertical foundation plate designated as an entirety by 59, on which two vertically

movable members

16 and 89 are slidably mounted and guided, member 15 being spring impelled in an up direction and positively moved down by the down swing of a manually operated handle (Figs. 1, 8, 9 and 10), and member 89 being spring impelledin a down direction and rais-ed by said first named member into temporary engagement with the `toe 52 of the foot 50. I

On one lower corner of the foundation plate 59 are a pair of lateral lugs 6| supporting a pivot pin 62, on which is mounted the lower end of a control member of the detent release mechanism designated as an entirety by 63. This control member 63 is a flat, upright bar disposed in a plane at right angles to the plane of the coin chute, and it is urged to swing inwardly toward the coin chute by a torsion spring 64 (Fig. 13) encircling the pivot pin 62, and anchored at one end to one of the lugs 6| and at its other end bearing on the transverse limb of the loop-shaped lower end of the member 63. On the upper end of the member 63 is a vertical stop shoulder 65, and at the base of the latter is a horizontal nger 66, these parts being movable across the lower portion of the chute section 56, and, when a coin C is deposited, engaging the latter in a manner shown in Fig. '1, temporarily arresting the coin, the latter at the same time blocking further inward swing of the member 63. Next below the finger 66 is a transverse slot 61 that straddles the inclined bottom wall 51 and permits the maximum inward swing of member 63 shown in Fig. 5, which occurs when an attempt is made to operate the scale without depositing a coin. In the body of the member 63, below the transverse slot 61, is an irregularly shaped longitudinal slot, the edges of which are so formed as to provide a stop shoulder to block actuation of the detent release mechanism when no coin is deposited, and also inclined surfaces or cams that, in cooperation with a nger on one of the Vertically slidable members, effect the outward swing and control the inward swing of the member 63. On the left edge of the slot, viewing Figs. 4, 5, 6 and 7, is a cam 68, a stop shoulder 69, and an oppositely inclined cam 10. On the right edge of the slot is a steep cam 1|, and a cam 12 opposite the cam 10. The portion of the slot between the cam 1| and the stop shoulder 69 forms a throat 13 for the normal down passage of the finger of the slidable member, and narrow upper and lower end portions 14 and 15 of the slot cooperate with said finger to hold the member 63 in the posititon shown in Figs. 4 and 6 respectively. The functions of these several cams of the slot will appear in the description of the operation.

Describing next the two vertically slidable members that are mounted on the

foundation plate

59, 16 designates as a whole a flat plate that is formed with vertically alined upper and

lower slots

11 and 18, continuous with the lower ends of which are

inclined cam slots

11 and 18. Upper and lower headed studs 19 and 80 mounted in the plate 59 extend through these slots and both conne the plate 16 on the plate 59 and guide the plate 16 in its vertical and lateral movements. Plate 16 is located next to the

coin chute parts

56, 51 and 58, and on the edge thereof adjacent to said parts is an integral horizontal finger 8| that extends behind a vertical guide bar 82 secured to the plate 59 and through the longitudinal slot of the control member 63. On the upper end of the other edge of plate 16 is a horizontal trip lug 83, and on the lower end of the same edge is a toothed rack 84 cooperating with a spring held dog 85 to form a well-known full stroke compelling device. A pull spring 86 anchored at its lower end to a pin 81 on the plate 16 and at its upper end to a pin 88 (Fig. 1) on the coin chute section 55 urges the plate 16 upwardly.

The other vertically slidable member consists of a plate designated as an entirety by 89. This plate 89 is also formed with vertically alined upper and lower slots 90 and 9|, through which extend headed

guide studs

92 and 93 mounted in the plate 59. Plate 89 is mounted alongside plate 16, and is normally urged downwardly by a pull spring 94 anchored at its upper end to a lug 95 on the outer edge of plate 89 and at its lower end to a pin 96 on plate 59. Pivoted on the front face of plate 89 about midheight of the latter at 91 is a trip lever 98 that is formed on its lower edge with a forwardly projecting lug 99 that lies in the path of the trip lug 83 during the rising movement of the latter. A pull spring |00 normally holds lever 98 in the horizontal position shown in Figs. 3 and 19. Lever 98 can swing downwardly, but not upwardly beyond the horizontal position shown, due to a tail piece |0| thereon engaged with one vertical edge of the plate 89. A suliicient down swing of lever 98 and its lug 99 can occur, because the tail piece IOI is below the level of its pivot axis 91. Also pivoted at |02 on the upper end of plate 89 is another trip lever I 03 and normally held in the horizontal position shown by a pull spring |04 and a stop lug |05. The nose |06 of this lever can swing downwardly, but not upwardly beyond the horizontal position shown. As the plate 89 rises, the nose |06 wipes across the toe 52 of the foot 50, and, as the plate 89 later descends under the pull of its spring 94, the nose |06 engages the toe 52 and draws the foot 50 and link 49 downwardly, thus raising the detent 40 from the ratchet wheel 42, and permitting the scale disc 20 to turn.

'Ihe normal posititon of plate 16 is its fully raised position shown in Fig. 3; the normal position of plate 89 is its fully lowered position shown in Fig. 3; and the normal position of foot 50 is its fully raised position shown in Figs. 1, 2 and 3. The trip lug 83 and trip lever 98 constitute what I term a lift-and-let-go connection between the

plates

16 and 89; and the lever |03 and toe 52 constitute what I term a pull-and-letgo connection between plate 89 and foot 50. The separation of the

lugs

83 and 99 is elected during the latter portion of the rising movement of plate 16 by the engagement of the

cam slots

11 and 18 with the guide studs 19 and 80, which effects a lateral shift of plate 16 away from the plate 83. The separationof the toe 52 from lever |03 is effected during the latter part of the down movement of foot 50 by a lateral shift of the latter away from the plate 89 due to the engagement of the cam slot 5I with a fixed guide stud |01 engaged with the slots 50', 5|.

Describing next the manually operated means for forcing the plate 16 and its finger 8| downwardly, fast on the hub of the handle 60 is a crank arm |08 (Figs. l, 8, 9 and 10), and pivoted to the outer end of arm |08 is a depending link |09 that is adjustably secured at its lower end by a screw and slot connection indicated generally by I| 0 (Fig. 3) to the upper end of a push bar II I that is operatively connected to the plate 16. To provide for a cushioned down thrust of the push bar and the transmission of a corresponding down push on the plate 16, the push bar is preferably made in a pair of springconnected sections, as follows. Referring to Figs. 3 and 18, III designates the front section of the push bar, in which is a long, continuous, longitudinal slot ||2 that slidably engages a guide stud I I3 mounted in the plate 16, so that the push bar section may have a combined downward and swinging movement as the handle 60 is' operated. Lying behind and in sliding contactY with the rear side' of the push bar section I'V is a' shorter push bar section v| |4,' the lower end'offwhich'is stepped on the stud H3. The section H4'is formed with a longitudinal 'slot H4 'in part registering with the upper portion of the `'long slot H2 'in section IH. A headed stud H5 mounted on section slidablyvengages- The return or upward movement of the push bar is effected 'by a pull spring |20.

Describing the operation, when the scale is idle the parts are in the position shown in Figs. 1-4 inclusive, the finger18| being in the upper end 14 of the longitudinal slot of the control member 63 and locking the latter in the position shown in Fighe.y A customer steps on the platform 29 and, having set the scale disc 2| weight, deposits a proper coin in the chute, the coin vcoming to rest on the finger 66. The handle'60 is then swung downwardly clockwise viewing Fig.V 1, which, through crank arm |08, link |09, and cushioned push bar HI, H1, H4, for-ces plate 16 downwardly. During the first part of the down stroke the plate 16 is lowered sufciently to carry finger V8| out of the upper end 14 of the slot, and this permits the control member 63 to swing inwardly until the shoulder 65 strikes the coin, as shown in Fig. 1, arresting the inward .swing of member 63 at a point where lthe throat 13 of the slot is in the path of the descending linger 8|. Further down swing of handle 60 carries finger 8| down through throat 13, and, as finger 8| `encounters and slides down cam 1'0, member 63 is cammed outwardly, as shown in Fig. 6, releasing the coin and permitting it to roll down inclined wall 51 and thence to the coin disposal mechanism. At the end of the down swingbf handle 60 the finger 8| is in the lower end 15 of the slot,'and member 63 is temporarily locked in 6. During the down movement of plate 16 the latter is shifted laterally to the right, and its liftlug 83 wipes idly over lug 99 of lever 98, slightly rocking the latter, and assumes a position vbeneath lug 99. Under the pull of spring |20.the push bar is raised, restoring handle 60 to normal position, and leaving plate 16 free to rise under the pull of its spring B6. As plate' 16 rises, it raises plate 89, through engagement of lift lug 63 with lever lug 99, to its highest position, the nose |06 of lever |03 wiping. idly past toe 52 during the rising movement. During the final part of this rising movement, whenlever |03 has Vbeen, carried above toe 52, plate16 is shifted laterally back, thus disengaging lug 83 from lug 99, and allowing spring 94 to suddenly pull plate 89 down. This causes the nose |06 of lever l|03 to strike toe 52 and draw down the foot 50 and link 49, thus releasing the detent of the scale weighing disc. During the iinal part of the down movement of foot 50, its cam slot 5|' shifts the foot to the left, thus disengaging toe 52 from lever |03, and allowing plate 89 to descend to its fully lowered position. During the rising movement of the plate 16 its finger 8|, of course, travels upwardly from its Fig. 6 position through its Fig. 'Z position, its sliding .engagement with cam to his estimated the position shown in Fig.

12 vshifting 'throat 13 into its path of travel, and its later sliding'engageme'nt with cam 68 rocking member 63 outwardly to permit the finger to enter the upper `end 14 of the slot, as shown in Fig. 4. r

AThe foregoing describes a complete cycle of the detent release mechanism when a proper coin has been deposited;

'If .now it be attempted without depositing a coin, there will be no vcoin to arrest the inward swing of control member 63 at the position shown in Fig. 1, in which .po-v sition lthe throat `13 is in the path of the linger 8|, and the result'is that the spring 64 swings member '63 to the limit of its inward movement shown in Fig. 5, wherein the 'stop 60 lies across the path of the descending finger 8| and arrests further descent of the latter. And if it be attempted to beat this, by giving the handle a quick, slamming movement, the sharp impact of finger 8| on the cam 1| accelerates the swing of control member 63 and throws the throat'13 across and beyond the path of 'the linger before the latter can enter the throat, so that the finger will, in that case also, be arrested by the stop 69, as' shown in Fig. 5, Hence, whether the handle be given a slow, even down movement or a quick, slamming movement, the detent release' mechanism will, not be actuated without the previous deposit of a coin. y

Describing next a governor-controlled means that controls the inward shift of disc 2| and effects its outward shift and is itself actuated in one direction by a bar -in turn actuated by the vertically movable member 16 of the detent release mechanism, and in the reverse direction by a spring, |39 designates a sector `shaped ylever that, as best shown inFigs. 14 and 16, is fast on a squared hub |40 keyed to the initial shaft |4| of a speed multiplying gear whole by |42, the final shaft to operate the scale '|43 of the train train designated as a mounting a wind vane |44. The initial gear |45 is loose on shaft |4|, and is driven in a contraclockwise direction only by a ratchet |46 fast on shaft |4| and a pawl |41 pivoted on gear |45. The gear train as a whole is mounted and supported on a fixed bracket plate |48 beneath the bracket plate 3|. This device is in the nature of a pneumatic governor or timer for slowing and steadying the swinging movement of the sector lever |39 in a contra-clockwise direction. A pull spring 49 (Fig. 1) constantly urges the sector lever in a contra-clockwise direction.

Loosely pivoted on the hub |40 and lying directly behind the sector lever |39 (Fig. 16) is a stop arm |50 formed with a squared upper edge th-at, in the idle position of the parts shown in Figs. 1, 8, 14 and 16 underlies the roller |38 and blocks the down movement of bar and the inward shift of disc 2 I; and just inwardly of the squared edge |5| is a cam |52 which, during the final part of the contra-clockwise swing of sector lever |39, engages the roller |38, lifting bar |30, and returning disc 2| to its normal idle position shown in Figs. 1 and 8. Stop bar |50 carries a lateral pin |53 that extends through an arcuate slot |54 in the sector lever for displacing and returning the stop arm |50 from and to its stop position. The broad edge of the sector lever is formed with an arc |55 struck from the pivot axis of *the lever, a stop |56 at the outer end of the arc for the roller |38 (Fig. 15), and incline |51 at the inner end of the arc facing the cam 52 and forming with the latter a wide V-shaped notch into which the roller |38 may drop when the two discs 20 and 2| are in the coin return position shown in Fig. 9. A xed stop |58 limits the swinging movement of both the sector lever and the stop arm to the left.

When a proper coin or token has been deposited, the sector lever and stop arm are swung clockwise from the position shown in Fig. 14 -to that shown in Fig. 15, tensioning the spring |49, by a lost motion connection to the plate 16 of the detent release mechanism. This connection includes an elbow lever that is pivoted at |59 (Fig. 13) on the rear side of the foundation plate 59. The substantially horizontal arm |60 of this elbow lever has a widened free end in which is an opening |6| that overlaps a. vertical slot |62 in the plate 59, and through this slot and the opening |6| passes a rearward extension ||3 of the stud ||3. The opening |6| is sufficiently larger than the diameter of the stud extension ||3 to allow a limited down movement of the latter before it begins to actuate the elbow lever. To the upper end of the upstanding arm |63 of the elbow lever is pivoted at |64 one end of a transversely extending push bar |65, the other end of which push bar has a longitudinal slot |66 engaged with a lateral pin |61 in the lowernarrow end of the sector lever |39.

Describing the operation of this disc-shifting mechanism, if no coin has been deposited, the stud extension ||3 moves idly through the elbow lever opening |6| to the dotted position shown in Fig. 13, but does not swing the lever, and consequently no disc-shifting movement occurs. But if a coin has been deposited, stud extension ||3' makes a full down movement, rocking the elbow lever to the dotted position shown in Fig. 13, and, through the push bar |65, swinging the sector lever |39 from the position shown in Figs.

1, 8 and 14 to the position shown in Fig. 15. vDuring this movement the left end of slot |54 strikes the pin 53, transferring the load of roller |38 and urges the pan from the sto'parm |50 tof the larc '|55 of the sector lever, as shownin dotted lines in Fig. 14,Y and Y swinging stop arm |50 out of its vertical position and the stop arm then drops by gravity until its pin |53 strikes the right end of slot |54; further swing of the sector lever and stop arm beingprevented by the engagement of stop |56 with roller |38 (Fig. 15) Thisl tensions the spring |49 of the pneumatic governor, and opens up the notch formed by the cam |52 and the incline |51. The pin and slot connection of the push bar |65'to the sector leverl enables the push bar to shift back to starting position as operating handle 60 returns to starting position during the slow retarded back swing ofthe sector lever and stop arm from Fig. 15 position to Fig. 14^ position. During the first half ofthis back swing arc |55 supports roller |38 to delay the disc shifting until the weight-actuated disc 20 has come to rest. The notch formed by the inclines |51 and |52 next passes beneath the roller |38. If, as shown in Fig. 10, the pins 24 fail to register with the holes 25, the inward shift of disc 2| is slight, and the roller |38 drops only part way into the notch, further drop being prevented by contact of the pins 24 with solid portions of the wall of -disc 20. During the nal part of the back swing cam |52 lifts roller |38 back onto the squared end |5| of stop arm |50. This limited shift of disc 2| is insufficient users return chuteand the coin passes to the coin box of the scale. But ifas shown in Fig. 9, the pins 24 do register' with the holes 25, the

inward shift of disc 2| is greater, and the down movement of bar |30 is then suiiicient to carry roller |38 substantially to the bottom of the notch. This greater movement of the disc-shifting mechanism throws a switch across the chute leading to the coin box thatvdeflects the coin to the users return chute.

Describing the operation of this coin disposal mechanism, in the idle position of the parts shown in Figs. 1 and 8, the arm |29 is in its lowest, approximately horizontal position, and the knob |82 is a considerable distance below the tail piece |19 of the coin switch. If the user fails to guess his correct weight the shift of disc 2| and the lift of rod |8| by arm |29 are so slight to switch the coin toy the` greater, and vthe lift that knob |82 isnotraised into contact with the Switch; as I'shown inliigs; 10`andz11, and consequently; the'y coin drops into thecoinl box |68. But Lify the luser has guessed his correct weight, theI swing vof the disc-shifting mechanism is switch' to operative, position, as. shown in Figs. 9 and' I2, and this deects the coin into the return chute.` y

'I'he invention of this application 'embodies `the same broad principle of operation as that of'my of rod I8l by arm |29'is, suicientto'cause the `knob |82 to throw the pending application Serial No.` 265,800; but invol-ves vsubstantial changes and improvements in thefstructural details and arrangements of the disc-shi'ting fmechanism and the coin-disposal mechanism to adapt th'ese latter mechanisms to cooperativerelationand use withthe new and improved handle-operated coin-controlled detent release mechanism forming the subject-matter off-my application Serial No; 309,355, which latter ineclianism-l may vbe advantageously employed veitherVA von a coin-:controlledY scaleof th-e type herein shown having a weight-actuated scale disc and a'manually =set scale disc, or on a coin-contr'olled' scale having only a Weight-actuated scale disc: j" In` the' invention of this application the means for ei'ecting and controlling the operation of Vthe discshiftingme'chanism from a movable 'element offthe detent release mechanism, and the' coindisposal means and means for operating the same from aj movable element of the discshifting mechanism, are distinctly novel and improved' over' the corresponding means vdisclosed iny my application` Serial No. 265,800. y p Changes and'variations in the details of structure and arrangement of` parts may be resorted towithin the operative principles of the mechani'sm shown and described and the scope` and coverage ofthe appended claims.

I claim: y ,17.l In Ya coin-controlled weighing scale, the combination with la weight-actuated scale disc and a manually set scale disc disposed sideby side with capacity of relative movement toward andjrom each other, vthe opposed sides oi said a hole and the other a pin discshaving the Aone adapted to enter said hole when identical weightindicating scale marks on the two discs are in.

register with each other, a detent. normally locking said weight-actuated disc against turning, a detent release mechanism including a slidable member, a spring urging said slidable member vin one direction, a handle operated push-bar for moving said slidable member in thefopposite direction,.a coin-controlled control member movable into'v the path of said slidable member to block complete ymovement of said slidable member insaid oppositedirection, and* a spring actuated mechanism'for shifting one disc toward the other,

of-amovable stop arm normally blocking working movement of said discfshifting mechanism and formed with a cam for effecting return movement'ofA said disc-shifting mechanism, a pivoted lever and means cooperating' therewith to retard the workingVv movement of saiddisc-shifting mechanism, al lost-motion connection of said lever to said stoparm for shifting the latter into and out of stop-engagement withY the said discshifting -mechan-ism, a spring urging said lever in a directionA to move said stop arm into stopv engagement, and a second push bar actuated vby saidslidable. member on a complete movement of` the 1atter,:for swinging'saicl lever in the reverse..

direction and simultaneously tensioning said last named spring. i

2. yIn a coin-controlled weighing scale ofthe class` described, the combination with a weightactuated scale disc and a manually set scale disc disposed side by side with capacity'of relative movement toward and from eachother, `the opposed sides of said discs' having the one va hole and the other a pin adapted to enter said hole when identical weight-actuated scale marks on the two discs are in register with each other, a detent normally locking said weight-actuated discvagainst turning, a diet-ent release mechanism including a vertically slidable member, a spring exerting a lifting actionon said slidable member, a handle-operated depending push-bar for 4lowering'said slidable member, and a pivoted springimpelled coin-controlled control member movablev to supportingly engage the lower 'end of said endwise slidable bar, Aa stop-arm pivoted icoaxially with said lever normally supporting' the lower end of said endwise slidable bar and formed with a cam for raising said bar as it engages the latter, a pin and slot connection between saidstoparmiandlever by which the latter swings'said stop-,arm both out of and into supporting engagement with said'endwise slidable bar, a spring urging said lever in a direction. to move said I.stop-arm into stop engagement, and. a second push-bar having a lost motion connection to and actuated yby said vertically slidable memberon the down movement of the latter for swinging said lever in the reversedirection and simultaneously tensioning said last nam-ed spring.

3. In combination with the subject-matter dened in claim l, means for delivering a coin comprising a main coin delivery chute, a branch coin return chute, a switch at thevjunction of said chutes for deflecting coins to said return chute and normally in inoperative position, and means actuated by a movableelement of the disc-shifting mechanism for moving said switch to operative position only under the maximum inwardv movement 'of said disc-shifting mechanism.

4. In combinationr with the subject-matter denedinclaim 1, means for delivering a coin comprising a main coinr delivery chute, a branch coin return chute, a switch at the junction ci, said chutes for deecting coins to said return chute andv normally in inoperativer position, means actuated by a movable element of the disc-shitting mechanism for moving said switch to operative position only under the maximuni'inward. movel ment of said disc-shifting mechanism, aA coinarrestingmember slidable. across. the'v maink chute above the junction of the chutes, a spring urging said coin-arresting,r member inwardly of vthe.

chute, `and. means actuated by the pivoted lever for withdrawing said coin-arresting,l member and means. kfor shifting said manually set disc toward` said weight-actuated disc, said means including a vertical endwise slidable bar and. a; spring` urging 4'said bar downwardly, means to control the down movement and effect the up movement of said bar comprising a lever pivoted intermediate its ends beneath said bar and formed on its upper end with an arcuate surface adapted to supportingly engage the lower end of said bar while the weight-actuated disc is coming to rest and with an incline at the inner end of said arcuate surface, and a stop arm alongside and freely pivoted coaxially with said lever and formed on its upper end with a cam for raising said bar and beyond said cam a squared end for supporting said bar in its raised position, said incline and cam forming a V-shaped notch to permit down movement of said bar, a lost-motion connection between said lever and stop-arm, and means for rocking said lever in both directions.

6. An embodiment of the subject-matter of claim 5, wherein the means for rocking the lever in one direction is a spring, and the means for rocking it in the reverse direction is a manually operated push-bar.

7. In combination with the subject-matter defined in claim 5, coin-disposal means comprising a coin chute leading to the coin box of the scale, a branch coin return chute, a switch at the junction of said chutes for shunting a coin to said return chute, a member connected to the discshifting means adapted to be raised by the latter. and a connection from said member to sai switch to move the latter to operative position only under the maximum upward movement of said member.

8. In combination with the subject-matter defined in claim 5, coin disposal means comprising a coin chute leading to the coin box of the scale, a branch coin return chute, a pivoted switch at the junction of said chutes for'deflecting a coin into the branch chute, said switch being normally in non-deflecting position, an arm connected to the disc-shifting means adapted to be raised by the latter, and a rod suspended from said arm and having a lost-motion connection to said switch serving to swing the latter to operative position only under the maximum upward movement of said arm.

9. In combination with the subject-matter dened in claim 5, coin disposal means comprising a coin chute leading to the coin box of the scale, a branch coin return chute, a pivoted switch at the junction of said chutes for deflecting a coin into the branch chute, said switch being normally l in non-deflecting position, said switch having an apertured tail-piece, a member connected to the disc-shifting means adapted to be raised by the latter, a rod suspended from said member and extending through said apertured tail-piece, and a knob on the lower end of said rod adapted to contact said tail-piece and throw said switch to operative position only under the maximum upward movement of said member.

10. In a coin-controlled Weighing scale having a shaft, a weight-actuated disc and a manually set disc disposed side by side on said shaft, means including a vertical endwise slidable bar and a spring urging said bar downwardly, for shifting said manually set disc toward said weight-actuated disc, a lever pivoted intermediate its ends beneath said bar equipped on its upper end with means for raising and permitting lowering of said bar, and means for rocking said lever in both directions, coin disposal means comprising a main coin chute leading to the coin box of the scale, a branch coin return chute, a normally inoperative switch at the junction of said chutes for shunting a coin to said branch chute, a pan slidable across said main chute above the junction of said chutes for temporarily arresting a coin, a horizontal operating bar connected to said pan, a spring acting on said operating bar to urge said pan across said main chute, means actuated by said pivoted lever for retracting said pan, and means actuated by an element of said disc-shifting means for moving said switch to operative position.

11. An embodiment of the subject-matter defined in claim 10, wherein the means actuated by the pivoted lever for retractin-g the coin-arresting pan comprises a lateral stud on the lower end of the pivoted lever, and a lever pivoted between its ends with one end thereof operatively connected to the operating bar of the pan and its other end lying across the path of travel of said lateral stud.

12. In a weighing scale, a weight actuated scale disc and a manually set scale disc mounted side by side on a common shaft, said manually set disc being slidable along said shaft; means for shifting said manually set disc toward said weight actuated disc comprising a rock shaft disposed crosswise of said shaft, arms on said rock shaft engaged with the hub of said manually set disc, an endwise slidable bar, lever and link connections frorn said bar to said rock shaft, and a spring urging said bar in a direction to shift said manually set disc toward said weight actuated disc; and means for returning said manually set disc from its shifted position and retaining it in its returned position, comprising a cam and a support beyond said cam, and means for moving said cam and support successively into engagement with the endwise slidable bar in opposition to the bar-urging spring.

13. An embodiment of the subject-matter defined in claim l2, wherein the means for returning the manually set disc from its shifted position and retaining it in its returned position comprises a lateral stud on the endwise slidable bar, a pivoted stop arm formed with a cam and a squared end beyond said cam, and a spring for swinging said stop arm in a direction to successively engage said cam and squared end with said stud. A

BURNS S. WATLING.