US974480A

US974480A - Adding-machine.

Info

Publication number: US974480A
Application number: US47649209A
Authority: US
Inventors: Clarence B Foster
Original assignee: Burroughs Adding Machine Co
Current assignee: Unisys Corp
Priority date: 1909-02-06
Filing date: 1909-02-06
Publication date: 1910-11-01
Anticipated expiration: 1927-11-01

Description

G. B. POSTER.

ADDING MAGHINE.

APPLICATION FILED FEB. e, 1909.

Patented Nov. 1, 1910.

4 SHEETSr-SHEET 1.

In l/entim WW Witnesses.

C. B. FOSTER.

ADDING MACHINE.

APPLICATION FILED FEB. 0, 1909.

Patented Nov. 1, 1910.

4 SHEETS-SHEET 2.

C. B. POSTER.

ADDING MACHINE.

APPLICATION FILED FEB. e, 1909.

Patented Nov. 1, 1 910.

4 SHEETS-SHEET 3.

Witnesses.

O. B. POSTER. ADDING MACHINE.

APPLICATION FILED FEB. a 1909.

Patented Nov. 1,1910.

4 SHEETS-SHEET 4.

J JVM M a M W W W W i 5 y 04 F W W y .fl v y y M 4 lnlfentor.

flttorneys. 3

Mtnesses. W

UNITED STATES PATENT OFFICE.

- CLARENCE B. ros'rnaor nnrnorr, MICHIGAN, ASSIGNOR TO BURROUGHS ADDING MACHINE compan or nn'rnorr, MICHIGAN, A CORPORATION or mcmean.

'the machine is operated or unless operations nnmne-mncmnn.

I Specification of Letters Patent.

Patented Nov. 1, 1910.

Application filed February 6, 1909. Serial No. 476,492.

Tool! whom it may concern:

Be it known that I, CLARENCE B. Fos'rnn, i a citizen of the United States, residing at I Detroit, in the county of Wayne and State of Michigan, have invented certain new anduseful Improvements in Adding-Machines, of which the following is a specification.

The present invention relates to powerdriven machines and as here shown and described is adapted to machines driven by an electric motor. The purpose is to prevent waste of power by the running of the motorwhen the machine is not being used. Means are provided for automatically turning off the current unless Within a predetermined time after the current has been turned on,

of the machine continue. Thus if, after turning on the current or-ot-her source of power, the user should happen to be called away before operating the machine at all or if, after having operated the machine with the current turned on, he should neglect to turn off the current or should fail to do so from any cause, the current will be automatically turnedoif.

To this end theinvention consists in certain novel features of construction and combinations of parts, the essential elements whereof are recited inthe appended claims and a preferred form of embodiment of which is described in detail hereinafter and fully illustrated in the accompanying drawings forming a part of this specification.-

Of said drawings Figure 1 represents in right side elevation an electric drive for an adding machine, the present improvements being incorporated therein; Fig. 2 is a vertical cross-section taken on the line 2-2 of Fig. 1; Fig. 3 is anenlarged right side elevation of some of the parts shown in Fig. 1, together with a section of the switch with the latter represented as open; Fig. 4. is a view similar to Fig. 3 but representing the switch as closed; Fig. 5 is a section taken at right angles to the section in Fig. 2 on line 5 5 of the latter; Fig. 6 shows the interior parts of the switch in elevation with the casing in section as well as the stem of the switch button; Fig. 7 is a cross-section of.

theswitch taken on the line 7-7 of Fig. (i; i Fi 8 is a horizontalsection taken substantia ly on the line 88 of Fig. 3; and Fig. 9

is a detail cross-section taken on the line 9-9 of Fig. 8.

The invention is here shown and described as adapted to the form of electric drive for adding machines disclosed in Vincent Patent 866,750, issued September 24:, 1907; see also Vincent Patent 894,550, issued July 28, 1908. In view of the disclosures in said patents it will not be necessary in the present specification to particularize as to the construction of'the motor and controlling devices therefor. Suffice it to state that the numeral 2 (Fig. 2) designates a shaftcarrying the driven member of a clutch and 3 a worm wheel carrying the driving member of theclutch which takes the form of a peripherally notched or corrugated ring 4: with which is adapted toengage a dog 5 carried by a disk 6 secured to the shaft 2 and having a cylindrical portion 6 surrounding said ring 4. An arm 5 loose upon the hub of the disk 6 is geared to the dog 5 and a spring 5 appliedto said arm tends to rock it in a direction to engage the dog with the corrugated ring 4L but normally the arm is restrained by a detent plug 5; The latter is geared to an arm 5 (Fig. 1) to which is coupled the lower end of a link 5 -0peratively connected to a depressible starting bar 5. Depression of the latter closes the clutch in the manner explained in said Vin- .cent Patent 866,750, the detent plug 5 being thereby disengaged from the arm 5.

Said detent plug will be forcibly restored to effective position shortly after the ma chine starts to operate, by the action of an oscillatory member of the machine upon the forward extension 5 of said link 5, as also fully set forth in said Vincent patent.

The switch for turning on and off the current is of the familiar snap variety though modified considerablyfor the pur poses of the present invention.

The numeral 8 designates the thumb piece or turn button of the switch which has a stem 9 (Fig. 7) extending through the cap 10 and the insulation baseblock 11. A coiled spring 12 surrounds this stem, being secured at one end to a disk or collar 13 secured to the stem. a sleeve 14 loosely surrounding the stem and the lower end ofthe spring is engaged with said sleeve. There is secured to the The spring is contained within lower end of the sleeve a disk 15 shouldered with suitable intervening insulation the" double-ended contact blade 17 adapted to cooperate with contact l eaf springs 18 arranged in pairs asusual. The ofl' positions of the blade 17 are determined by the alternate engagement of the shoulders 15" K and 15 with a spring-pressed catch 19 pivoted to the base of the switch and having a cam tail 20 adapted to'be acted upon alternately by cam projections 21 on a disk 22 secured to the stem 9 of the turnbutton.

When the latter is turned with the catch 19 enga ed with either of the shoulders 15 or 15 t e spring 12 will necessarily be put under tension and then with continued turning of the button and itsstem one of the cam projections 21 will act upon the cam tail 20 of said catch, displace the latter and permit the spring to throw the blade into en a ement with the contact springs 18. It wil e noted that a half rotation of the thumb iece is necessary in order to release the catc and thus sufficient power is stored in the sprin to produce a' half rotation of the switch %lade. However, theblade is restricteda quarter rotation "through means presently to be described, so as to hold the blade in the on position and reserve power of the spring to eflect auto- 86 matic opening of the switch. Thus a second dog or catch 23 is pivoted on the base of the switch and s ring-pressed against the disk 15 so as to a ternatelg engage the shoulders 15 and 15 thereof, t of engaging portion of this second catch being a quarter turn distance from the engaging portion of the firstmentioned catch.

It will be obvious that with the above described construction the turning of the button a half rotation will result in release of the contact blade from the restraint of the dog or catch 19 and permit the spring 12 to give the blade a quarter turn, the shoulder dis 1 15 being then restrained by the second dog or catch 23 as illustrated in Fig. 4. A spring-pressed pawl 24, pivoted on the base of the switch, engages the disk 22 and prevents retrograde movement of the switch button. Now the purpose is to control the second dog or catch 23 by timing devices so that should the current be turned on but the machine not 0 erated the contact blade will be automaticaFl thrown to the off position after a predetermined lapse of time and so that the same result will ensue a predetermined time after cessation of use of the adding machine. Thus there is pivoted to a supporting arm 25 on the switch base (Figs. 3 and 4) a bell crank lever 26 which carries a spring-pressed flip pawl 27 adapted to i turn of the lever 29 causes the flip pawlto jection. Inbemg rocked from such posiengage a cam projection 23 on a dependin arm 23. of the catch or dog 23. The tail 0 the flip pawl underlies a lip 26* on the lever 26 'so that when such lever is rocked from the position shown in Fig. 4 the flip pawl will displace said dog or'catch.

As the apparatus stands normally the bell crank lever is in the osition shown in Fig. 3 withtheflip pawl a ove the camprotion it does not affect the dog or catch, the flip pawl merely turning when engaged with p the shoulder which terminates the cam projection 23 and passing by the latter to the position shown in Fig. 4. The bell crank 26 is connected by a link 28 with another bell crank lever 29 pivoted at 30 to the framework of the. apparatus, one arm of said lever being connected by a comparatively strong spring 31 with a stud on such framework, said spring tending to swingrearwardly or to the right, as the parts are viewed inFigs. 3 and 4, the upstanding arm of theslesjer. This latter arm at its upper end is pivotally connected to the head of a. cylinder '32 which slides upon another cylinder'33, the latter being pivotally mounted at 34 to a suitably arranged bracket 35 on the framework of the apparatus. The head of the cylinder 33 is made with a series of apertures 36 for intake of air, said apertures being covered on the interiorof the cylinder by a leather disk or washer 37, (see Figs. 3and 9.) An aperture 38 in the head of said cylinder registers with an aperture 39 in said leather disk or washerto provide for exhaust of air from the interior of the cylinders. A set screw 40 has a coni- I cal inner end to constitute a valve for regulating the exhaust. It will be obvious that drawing forward of the upstanding arm of the lever 29 in opposition to the s ring 31 will draw the cy lnder 32 away om the cylinder 33 and suck air into the latter through the ports or apertures 36 as well as the apertures 38 and 39. It will further be apparent that, with the leather disk or washer 37 closing the ports 36 the exhaust of air will be confined to the restricted out- 7 let 38 and hence return of the cylinder 33 11.5 will be retarded, to a great or less extent according to the adjustment of the valve 40. The idea is that when the current is turned on the lever'29 will be rocked to set this timing device above described and that if the'.adding machine is not then operated;.., within a predetermined length of time, that is to say, before the spring 31 moves said lever back to normal, the current will be turned off. This is obvious since the rocking of thelever against the stress of the spring 31 carries the flip pawl 27 down below the cam projection of the dog or catch 23 as illustrated in Fig. 4 and the redisplace the dog or catch. .The means here shown for. retracting or primin the lever 29 as the result of turning on t e cur rent, comprise a cam block or strip 41 (Figs. 3 and 8) secured to the side of the worm' wheel 3 and a lever pivoted to the gear casing i at 42,- havin ,a, roller-equipped arm i 43 forf-Tco-action'. wit said cam-and an arm 44;carrying a flip pawl 45- to operate a vbellcrank lever 46 coupled by. a link 47 with the lever 29. Now it; will be understood ofv course that whenever the current is turned on the said worm wheel-1s in motion. Consequently' very soon after the motor has lever arm .43 is retracted by the camt-he' other arm 44 is rocked upwardly causing the flip pawl 45 to rock the bellcrank lever 46 and through .the link 47 retract the lever 29 to the position shown in Fig. 4. The pivot of the lever. 4344 is a short shaft 42 (Fig. 8) which carries an arm 48 connected it by a spring 49 with the gear casing, such spring normally holding the lever to the position shown in Fig. 3 with the flip pawl 45 belowthe fonwardly projecting arm of the bell crank lever 46 as shown in Fig. 3.

y The tailof the flip pawl 45 underlies a lip .44 on the arm 44, being held thereagainst by a spring 45 from which it will be obvious that in upward rocking of the arm44 the fiippawl will displace the bell crank 46. However, the relation of parts is such that as the lever 29 reaches the' limit ofits movement under actuation of said flip pawl the are described by the point of the latter will cross the are described by the point of the forwardlyprojecting arm ofthe bell crank 46, as indicated by dotted lines in Fig. 3, with the result that these parts become dis"- engaged and the'lever 29 can return under actuation of its spring 31, independently of the lever 43-44.

In order to prevent re-setting or re-priming of the timing mechanism before the automatic opening of the switch, can take place, the before-described lever 43-44 is latched in its displaced position and so held until the switch has opened. To this end the arm 44 is prolonged and formed at its rear upper extremity with a'laterally-turned lip 44* which when said arm is rocked upward by the cam 41 rides over an inclined edge of an arm 50, the latter having a latching shoulder 50 to engage under said lip when the latter passes and said arm being normally heldtoward a stop pin 51 by a coiled spring-52 connecting such stop pin with the arm. The bell crank leyer46 is secured-to a 'rock'shaft 53 (Fig. 8) .on which said arm 50.

.crank lever 46 and thelink 47.v

extension 5O which extends in rear of the coupling stud or pin 54 connectin the bell ormally such coupling in enga 'es the arm as shown in Fig. 3 hol ing it eflected against the stress of the spring 52 but as soonas the bell, crank lever 46 'hasbeenrocked to a comparatively slight extent by the cam 41' the spring52will have drawn the upper ortlon 50"offthe' arm" against the pin 51 an as the oip'eration proceeds the lip 44 will displace t e arm in opposition to the spring 52 and bring about the latching of the lever 4344 in the position to which it is moved by the cam 41, as illustrated in Fig. 4. Near the "close of the gradual return movement of the lever 29 and bell crank 46 the coupling pin '54 will strike the lower extension 50 of the arm and displace it suiiiciently to'release the 1ever43-44 whose spring 49 then returns ll? 't0 the position shown in Fig. 3, the switch having meantime been opend so that said lever will .not be again retracted. 1

It is of course essential that the automatic switch-openin mechanism shall not take effect if, following the turning on of the current, the addlngmachine is operated.

' Therefore means are provided for keeping the lever 29 retracted by the driven member of the clutch. To this end a cam 60 (Figs. 2 and 5) is secured to the cylindrical portion 6 of the clutch disk 6 and there is secured to the shaft 53 an \arm 61 equipped with a roller to be acted upon by said cam 60. If, within a reasonable time after turning on the current, the adding machine is operated, which means that the driving and driven members of the clutch are coupled together, then before the lever 29 will have had time to move back under the impulse of its spring '31 far. enough to openthe switch, the cam 60 will act upon the arm 61 and rock the bell crank lever 46, thereby forcing the lever 29 forward in opposition to the spring 31. Of course if operations of the adding machine continue with reasonable frequency repetitions of this eifect will. be produced. When such operations of the adding machine cease and are not resumed quite soon the dormant state of the driven clutch member will permitthe lever 29 to move gradually all the way back, causing the opening of the switch.

is loosely mounted and the arm has a lower It will be understood that the switch but-ton having been turned half way around when starting up the motor and the dog 27 limiting the resultant throw of the switch blade to a quarter turn, the switch spring12 has not expended its force and that when the said dog 27 is thereafter tripped there is sufficient reserve power in the spring to throw the switch blade another quarter turn.

While well adapted to fulfil the objects primarily stated, the particular construction here shown and described. is of course susdevices set by the ceptible of modification and the invention is.

not necessarily to be considered as limited in this regard.

What Iclaim is:

1.\The combination of the machine proper,-

a motor for driving the same, a clutch between the motor andthe machine,means for starting and stopping the motor, and timing devices for operating said means to stop the motor when the clutch is open.

2. The combination of the machine proper, a motor for driving the same, a' clutch be tween the motor an the machine, means for starting and stopping the motor, and motorset timing devices for operating said means to sto the motor when the clutch is open.

' 3. T e combination of the machine proper, a motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, means for starting and stoppin the motor, and timing riving member of the clutch and adapted to o erate upon said means to stop the motor w en. the clutch remains open a redetermined length of time. 4. The combination'of the machine proper,

a motor for driving the same, a clutch between the ntotor and ithe machine comrising driving and driven members, means or starting and stopping the motor, timing devices set by the driving member of the clutch and adapted to operate u on said means to stop the motor when the c utch remains open a predetermined length of time, and means for keeping said timing devices set by the driven member of the clutch.

5. The combination of the machine proper, an electric motor for driving the same, a clutchbetween the motor 'and the machine, a switch for starting andstopping the motor, and timing devices for operating said switch to sto the motor when the clutch is open.

' 6. T e combination of the machine proper,

an electric motor for drivingthe same, a clutch between the motor and the machine, a switch for starting and stopping the motor, and motor-set timing devices for 0 crating said switch to stop the motor w en the clutch is open.

7. The combination of the machine proper, an electric motor for drivin the same, a clutch between the motor andthe machine comprising driving and driven members, a switch for starting and stopping the motor, and timing devices set by t e driving member of the clutch, and adapted to operate upon said switch to stop the motor when the clutch remains open a predetermined length of time;

8. The combination of the machine proper, an electric motor for drivin the same, a clutch between the motor an the machine comprising driving and driven members, a switch for starting and stopping the motor,

timing devices set by the driving member.

said switch to stop the motor when the clutch remains open a predetermined length of.time, andmeans for keeping said timing devices set by the 'driven member of the clutch.

9. The combination of the machine proper,

. tween the motor an the machine, means for starting and stopping the motor, and timing devices for operating said means to stop the motor when the clutch is open, said. devices comprising a spring ada ted to be put under tension by the motor an means for regulating the recovery of said spring.

10. The combination of the machine proper, a motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, means for starting and stopping the motor, and timing devices adapted to operate upon said means to stop t e motor when the clutch remains open a predetermined length of time, said devices comprising a spring adapted to be put under tension by the driving member of the clutch together with means for regulating the recovery of said spring.

11. The combination of the machine proper, a motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, means for starting and stopping the motor, and timing devices adapted to operate upon said means to stop the motor when the clutch remains open a predetermined length of time, saiddevices comprising a spring adapted to be put under tension by the driving member of the clutch together with means for regulating the recovery of said spring; and means for keeping said spring under tension by the driven clutch member. 12. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, a switch for starting and stopping the motor, and timing devices adapted to operate upon said switch to stop the mo tor when the clutch remains open a predetermined length of time. said devices'comprising a spring adapted to be put under tension by the driving member of the clutch together with means for regulating the recovery of said spring.

13. The combination of the machine proper, an electric motor for driving the machine comprising driving and driven erate upon said switch to stop the motor when the clutch remains open a predetermined length of time, said devices comprising a spring adapted to be put under tenof the clutch and adapted to operate upon a motor for driving the same, a clutch besame, a clutch between the motor and the memberfmeans for restraining the latter,

means for releasing it as an incldent to tensioning the spring to close the circuit, the tensioning of the spring being sufficient to move the member on to break the circuit,

means for checking the member in the closing position, and a timing device adapted to be set by, the motor and to release the circuit-closing member from the closing position when the motor has run a certain length of time with the clutch'open. p 15. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine, a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to tensioning the spring to close the circuit, the tensioning of the spring being sufficient to move the member, on to break the circuit, means for checking the member in the closing position, and a timing device adapted to be set byv the motor and to disable the latter means. .7

16. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine,'a rotary circuit-closing member, a spring adapted :to be tensioned to turn said member, means for restrainin the latter, means for releasing it as an incident to ten sioning the spring to close the circuit, the tensioning of the spring being sufiicien't to move the member on to break the, circuit,

means for checking the, member in the 010s ing position, and a spring-actuated timing device adapted to be set by the motor and to disable the latter means.

17. The combination of the machine proper, an electric motor for driving the same, a clutch 'between the motor and the machine comprising driving and driven ele- ,ments, a rotary. circuit-closing member, a

spring adapted to be tensioned to turn said member, means for restraining the latter, means forv releasing it as an incident to tensioning the spring to close the circuit, t-he ten sioning of the spring being sufficient to move the member on to break the circuit,

means for checking the member in the closing position, and a timing device adapted to,

' beset by the driving member of the clutch and adapted to release the circuit -closing member from the closing position when the motor has run a certain length of time with v v the clutch open. a I

18. The combination of the machine proper an electric motor for driving the same, a clutch between the motor and the 7 machine comprising driving and driven elements, a rotary circuit-closing member, a

spring adapted to be tensioned to turn said 7 member, means for restraining the latter,

means for releasing it as an incident to ten sioning the springto close the circuit, the

tensioning of the spring being sufiicient to move the member on to break the circuit, means for checking the member in the closing position, a timing device adapted to set by the driving member of the clutch and adapted to release the circuit-closing memher from the closing position when the motor has run a certainlength of time with the clutch open, and means for maintaining the said timing device set'by the operation of the driven clutch member.-

19. The combination of themachine tensioning of the spring bein sufficient to move the member on to brea the circuit, means for checkin the member in the 0165- ing position, a trip for disabling'said latter means, .a lever connected to said trip, a spring applied to said lever, means'forre; tracting the lever by the motor in opposltion to the s ring, and means for retarding movement ofthe lever by the spring. 7 20. The combination of the 4 machine proper, an electric motor for driving thesame, a elutchbetween the motor and the machine comprising driving and driven elements, a rotary circuit-closing member, a

spring adapted to be tensioned to turn said member, means for restraimn the latter,

means for releasing it as an incident to tensioning the spring to close the circuit, the

'tensioning of the spring bein sufiicient to move the member on tobrea p means for checking the member 1n theclosthe circuit,

ing position, a trip for disabling said latter means, a lever connected to sald trip, a

spring applied to said lever, .means for retracting t e lever by the drivin member of the clutch in opposition to; t e spring, means for retracting the lever by the driven member of the clutch, and means for retarding the advance of the lever y the spring;

21. The combination of the mac me proper, an electric motor for driving the I same, a clutch between the motor and the machine, a rotary circuit-closing member, a

spring adapted to be tensioned to turn said member, means for restralmng the latter,

means for releasing it as an incident to tensioning the spring to close the circuit, the tensioning oi the spring being suflicient to more the member on to break the. circuit, means for checking the member in the closing position, a trip for disabling said latter means, a lever connected to said trip, a spring applied to said lever, means for retracting the lever by the motor in opposition to the spring, saidv means having pass-by provisions to provide for advance of the lever independently of the retracting means, and means for retarding movement of the lever by the sprin 22. The. combination, of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine, a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to ten sioning the spring to close the circuit, the tensioning of the spring being suflicient to move the member on to break the circuit, means for checking the member in the closing position, a trip for disabling said latter means, a lever connected to said trip, a spring applied to said lever, a cam on the driving member of the clutch, a lever 0 erated by said cam and having a flip paw a lever operated by said flip pawl and connected to the first-mentioned lever, and means for retarding movement of the latter by its spring.

23. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine, a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to ten sioning the spring to close the circuit, the tensioning of the spring being sufficient to move the member on to break the circuit, means for checking the member in the closing position, a trip for disabling said latter means, a. lever connected to said trip, a spring applied to said lever, a cam on the driving member of the clutch, a lever operated by said cam and having a flip pawl, a latch for holding said latter lever in operated position, a lever operated by said flip pawl and connected to the first-mentioned lever, and means for retarding movement of the latter by its spring, said first-mentioned lever adapted to operate said latch at the close of movement by its spring.

-24. The combination. of the machine proper, an electric motor for driving the same, a clutch between thermotor and the machine comprising driving and driven elements. a rotary circuit-closing member. a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to tensioning the spring to close the circuit, the tensioning of the spring being sufiicient to move the member on to break the circuit, means for checking the member in theclosing position, a trip for disabling said latter means, a lever connected to saidtrip, a spring applied to said lever, means for retracting the lever by the driving member of the clutch in opposition to the spring, said means having pass-by provisions to provide for advance of the lever independently of the retracting means, means for retracting the lever by the driven member of the clutch, and means for retarding the advance of the lever by the sprin 25. The combination of the machine proper, an electric ,motor for driving the same, a clutch between the motor and the machine comprising driving and driven elements, a rotary circuit-closing member, a

spring adapted to be tensioned to turn said member, means for restraining the latter,

means for releasing it as an incident to tensioning the spring to close the circuit, the tensioning of the spring being sufiicient to move the member on to break the circuit, means for checking the member'in the closing position, a trip for disabling said latter means, a lever connected to said trip, a

spring applied to said lever, a-cam on the driving member of the clutch, a lever operated by said cam and having a flip pawl, a lever operated by said flip pawl and connected to the first-mentioned lever, a cam on the driven clutch member also adapted to operate said last-mentioned lever, and means for retarding movement of the first-mentioned lever by its spring.

26. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine comprising driving and driven elements, a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to tensioning the spring to close the circuit, the tensioning'of the spring being snfiicient to move the member on to break the circuit, means for checking the member in the closing position, a trip for disabling said latter means, a lever connected to said trip, a spring applied to said lever, a cam on the driving member of the clutch, a lever operated by said cam and having a flip pawl, a latch for holding said latter lever in operated position, a lever operated by said flip pawl and connected to, the first-mentioned lever, a. cam on the driven clutch member also adapted to operate said last-mentioned lever. and means for retarding movement of the first-mentioned lever by its spring, said first-mentioned lever adapted to operate said latch at the close of movement by its spring.

27. The combination of the machine keeping said timing devices proper, a motor for driving the same, a a clutch between the motor and the machine," means for starting and stopping the motor,

and fluid regulated timing devices for operating said means to stop the motor when the clutch is open.v

.28. The combination of the; machine proper, a motor for driving the same, a clutch between the motor and the machine, means for starting and stopping the motor, and fluid-regulatedv motor-set timing devices for operating said means to stop the motor when. the clutch is open.

29. The combination .of the machine 'means for starting afid stopping the motor,

fluid regulated'timing devices set by the driving member, of the clutch and adapted to operate upon said means to stop the motor when the clutch remains open a predetermined length of time; and means for set by the driven member of the clutch.

31. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine, a switch for starting and stopping the motor, and fluid regulated timing devices for operating said switch to stop the motor when the clutch is open.

32. The combination of the machine proper, an electric motor for driving the same, aclutch between the motor and the machine, a switch forstarting and stopping,

Y the, motor, and fluid regulated motor set timing devices for operating said switch to stop the motor when the clutch is open.

33. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, a switch for starting and stopping the motor, and fluid regulated timing devices set by the driving member of the clutch and adapted to operate upon said switch to stop the motor when the clutch remains open a predetermi'ned length of time.

34. The combination ofthe machine proper, an electric motor for driving the same, a clutch between. the motor and the machine comprising driving and driven members, a switch for starting and stopping the motor, fluid regulated timing devices set the motor, and timing devices adapte by the driving member of the clutch and adapted to operate upon said switch to stop the motor when the clutch remains open a predetermined length of time, and means for keeping said timing devices set by the driven member of the clutch.

35. The combination of the machine proper, a motor for driving the same, a clutch between the motor and the machine, means for starting and stopping the motor, and timing devices for operating said means to stop the motor when the clutch is open,

said devices comprising a spring. adapted to,

. be put under tension by the motor and fluid regulated means for'controlling the recovery of said spring.

36. The combination proper, a motor for driving the same, a

vclutch between the motor and the machine comprising driving and driven members, means for starting and sto ping ,the motor, and timing devices adapte to operate upon said means to stop the motor when the clutch remains open a predetermined length of time, said devices comprising a spring adapted to be put under tension bythe driving member of the clutch together with fluid regulated means for-"controlling the recovery of said spring, I

37. The combination of the machine proper, a motor for driving the same, a

clutch between the motor and the machine comprising driving and driven members, means for starting and sto ping the motor, and timing devicesv adapte to operate upon said means to stop the motor when the clutch remains 0 en' a. predetermined length of time, sai devices comprising a spring "adapted to be putunder tension by the driving memberof theclutch to ether with fluid regulated means for control ing'the recovery of said spring; and means for keeping said spring under tension by the driven clutch member.

38. The combination of the machine proper," an electric motor for driving the machine} comprising driving and driven members, a switch for starting and stopping to i of the machine same, a clutch between the motor and the I operate upon said switch to stop the motor when the clutch remains open a predetermined length of time, said devices comprising a spring adapted to be put under tension by the driving member of the clutch together with fluid regulated means for cont-rolling the recovery of said spring. 4 v

39. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine comprising driving and driven,

members, a switch for starting and stopping the motor, and timing devices adapted to operate upon said switch to stop the motor when the clutch remains open a predetermined length of time, said devices comprising a spring adapted to be ut under tension by the driving member 0 the clutch togetherwith fluid regulated means for controlling the recovery of said spring; and means for keeping said spring under tension by the driven clutch member.

40. The combination of the proper, an electric motor for driving the same, a clutch between the motor and the machine, a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to tensioning the spring to close the circuit, the tensioning of the spring being sufficient to move the member on to break the circuit, means for checking the member in the closing position, and a fluid regulated timing device adapted to be set by the motor and to release the circuit-closing member from the closing position when the motor has run a certain length of time with the clutch 0 en.

11. The combination of the mac ine proper, an electric motor for driving the same, a clutch between the motor and the machine, a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to tensioning the spring to close the circuit, the tensioning of the'spring being suflicient to move the member on to break the circuit, means for checking the member in the closing position, and a fluid regulated timing device adapted to be set by the motor and to disable the latter means. r p

42. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine, a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means means for releasing it as an incident to tensioning the spring to close the circuit, the tensioning of the spring being sutficient to move the member onto break the circuit, means for checking the member in the closing posit-ion, and a spring-actuated fluid regulated timing device adapted to be set by the motor and to disable the lattermeans.

43. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine comprising driving and driven elements, a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to tensioning the spring to close the circuit, the

machine tensioning of the spring-being sufiicient to move the member on to break the circuit,

means for checking the member in the closingposition, and a fluid regulating timing device adapted to be set by the driving member of tensioning of the spring bein for restraining the latter,-

the clutch and adapted to release the circuitclosmg member from the closing position when the motor has run a certain length of time with the clutch open.

it. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine comprising driving and driven elemefits, a" rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to tensioning-the spring to close the circuit, the tensioning of the spring being suflicient to move the member on to break the circuit, means for checking the member in the closing position, a fluid regulated timing, device adapted to be setgby -the driving member of -the clutch and'adepted to release the circuitclosing member from the closing'position when the motor hasrun a certain length of time with the clutch open, and means for maintaining the sald timing device set by the operation of the driven clutch member.

45. The combination of the machine proper, an electric motor for drivm the same, a clutch between the motor an the machine, a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to tensioning the spring to close the circuit, the suflicient to move the member on to brea the circuit, means for checking the member inthe closing position, a trip for disabling said latter means, a lever connected to said trip, a spring applied to said lever, means'for retractinggthe lever by the motor in opposition to the spring, and fluid regulated means for-retarding movement of the lever bythe spring. i

46. The combination of the machine proper, an electric motor for drivin the same, a clutch between the motor and the machine comprising driving and driven elements, a rotary circuit-closing member, a

member, means for restraining the latter, means for releasing lt as an incident to tensioning the spring toelose the circuit, the tensioning of the spring being sufficient to move the member on to break the circuit,

means for checking the member in theclosa,

ing position, a trip for disabling said latter means, a lever "connected to said trip, a spring applied to said lever, means for re; tracting the lever by the drivingmember of the clutch in opposition to the spring, means for retracting the lever by the driven member ofthe clutch, and fluid regulated means for retarding movement of the lever by the spring.

- 4C7. The a combination of the machine proper, an electric motor for driving the spring adapted to be tensioned to turn said 7 means for checking the member in the dos ing position, a trip for disabling said latter means, a lever connected to said trip, a

spring applied to said lever, means for retracting the lever by the motor in opposition to the spring, said means having passby provisions to provide for return move ment of the lever independentlof the retracting means, and fluid regu ated means for retarding movement of the lever by the spring.

48. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine, a rotary circuit-closing member, a spring adapted to be tensioned to turn said member,

means for restraining the latter, means for releasing it as an incident to tenslonmg the spring to close the circuit, the tensionin-g of the spring being sufficient to move the memberlon to break the circuit, means for checkin the member in the closing position, va trlp for disabling said latter means, a lever connected to said trip, a spring applied to said lever, a cam on the driving member of means for retardin the clutch, a lever operated by said cam and having a flip pawl, a lever operated by said flip pawl and connected to the first-mentioned lever, and fluid regulated means for retarding movement of the latter by its spring.

49. The combination of the machine proper, an electric motor for driving the same, a

clutch between the motor and the machine,

a rotar circuit-closing member, a spring adapte to be tensioned to turn said member,

means for restraining the latter, means for releasing it as an incident to tensioning the spring to close the circuit, the tensioning of the spring being suflicient to move the member on to break the circuit, means for checking the member in the closing position, a trip for disablin said latter means, a lever connected to said trip, a spring applied to said lever, a cam on the driving member of the clutch, a lever operated by said cam and having a flip pawl, a latch for holdin said latter lever in operated position, a lever operated by said flip pawl and connected to the first-mentioned lever, and fluid regulated movement of the latter by its spring, said first-mentioned lever adapted to operate said latch at the'close of movement by its spring.

50. The combination of the machine proper,

an electric motor for driving the same, a clutch between the motor and the machine rotary circuit-closmg member,-

comprising driving and driven elements, a

adapted to be tensioned to turn said member, means for-restraunn the latter, means for releasing it as an incident to tensionlng a spring the spring to close the circuit, the tensioning of. the spring being suflicient to move the member on to break the circuit, means for checking the member in the closing position, a trip for disablin said latter means, a lever connected to said trip, a spring applied to said lever, means for retractin the lever by the driving member of thee utch in opposition to the spring, said aneans having pass-by provisions to provide for advance of the lever independently of the retracting means, means for retractin the lever by the driven member of the c utch,

and fluid regulated means for retarding the advance of the lever by the spring.

51. The combination of the machine proper, an electric motor for drivin the same, a clutch between the motor an the machine comprising driving and driven elements, a rotary circuitwclosin-g member, a spring adapted to be tens'ioned to turn said member, 7

means for restrainin the latter, means for releasing at as an meident-to tensioning the spring to close the circuit, the tensionmg of the spring being sufficient to-move the memher .on to break the circuit, means for checking the member in the closing position, a

connected to,said trip, a springapplied to said lever, a cam on the driving member of the clutch, a lever operated by said cam and having a flip pawl, a lever operated by said flip pawl and connected to the firstmentioned lever, a cam on the driven clutch member also adapted to operate said lastmentioned lever, and fluid regulated means for retarding movement of the first-mentioned leverby its spring.

52. The combination of the machine proper, an electric motor for drivin the same, a clutch between the motor an the machine comprising driving and driven elements, .a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, means for restraining the latter, means for releasing it as an incident to tensioning the spring to close the circuit, the tensioning of the spring being suflicient to move the-member on to break the circuit, means for checking the member in the clos ,ing position, a trip for disabling said latter means, a lever connected to said trip, a spring applied to said lever, driving member of the clutch, a lever operated by said cam and having a flip pawl, a latch for holding said latter lever in operated position, a lever operated by said flip pawl and connected to the first-mentioned lever, a cam on the driven clutch member also adapted to operate said last-mentioned a cam on the trip for disabling said latter means, a lever lever, and fluid-regulated means for retardmovement by its spring.

53. The combination of the machine proper, a' motor for dr1v1ng the same, a

.clutch between the motor and the machine 1 comprising driving and driven members,

' machine, a rotary circuit-closing .engage 4 engage the means for starting and stopping the motor, and timing devices adapted to operate upon said means to stop the motor when the clutch remains open a predetermined length of time, ed to be put under tension by the driving member of the clutch together with telescoped cylinders ported and valved for fluid intake and restricted'exhaust.

54. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine, -a rotary circuit-closing member, a spring adapted to be tensioned to turn said member, .means for restraining the latter, means for releasing it as-an incident to tensioning the spring to close the circuit, the tensioning of the spring being suflicient to move the memberon to break the circuit, means for checking the member in the closing position, a trip for disabling said latter means, a lever connected to said trip, a spring applied to said lever, means for re-. tracting the lever by the motor in opposition to the spring, and means for retarding movement of the lever by the spring, said means comprising telescoped cylinders ported'and valved for fluid intake and restricted 'exhaust.

55. The combination of the ,machine proper, an electric motor for driving the same, a clutch between the motor and the machine, a rotary circuit-closing member carrying a shouldered disk, a rotary manipulating member carrying a cam disk, a spring connecting the said two members, a pawl to the shouldered disk andadaptedto be displaced by the cam disk, a second pawl to engage said shouldered disk, and timing means for displacing said second pawl.

56. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the member carrying a shouldered disk, a rotary manipulating member carrying a cam disk, a spring a pawl to shouldered disk and adapted to' connecting the said two members,

be displaced by the cam disk, a second pawl to engage said shouldered disk, and 'a lever having a flip pawl to displace said second pawl, and timing means connected to said lever, V

57, The combination of the machine proper, a .motor.

said devices comprising a spring adapt-,

upon said switch to stop for driving the same, a

clutch between the motor and the machine,

means for starting and stopping the motor, and timing devices for operating saidmeans to sto the motor when the clutch is open, said evices comprising aspring-held lever adapted to be retracted by the motor and means for regulating return. movement of said lever.

58. The combination of the machine proper, a motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, means for starting and stopping the motor, and timing devices adapted to operate upon said means to stop the motor when the clutch remains open a predetermined length of time, said devices comprising a s ring-held lever adapted -to be retracted by t e driving member of the clutch, and means for regulating the return movement of said lever.

59. The combination of the machine proper, a motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, means for starting and stopping the motor, timing devices adapted to operate upon said means to stop the motor when the clutch remains open 'a predetermined length of time, said devices comprising a s rmg-held lever adapted to be retracted by tlie driving member of the clutch, and means for regulating the return movement of said lever; and means for keeping the latter retracted by the driven member of the clutch.

60. The combination of the machine proper, an electric motor for driving the same, a ,clutch between the motor an the machine comprising driving and driven members, a switch for starting and stopping the motor, and timing devices adapted to operate upon said switch to stop the motor when the clutch remains 0 en a, predetermined length of time, said evicer: comprismg a s tracted' y the driving member of the clutch, and means for regulating the return movement of said lever.

61. The combination of the machine proper, an electric motor for driving the samd, a clutch between the motor and the machine, comprising driving and driven members, a swit h-for starting and stopping the motor, timing devices adapted to operate the motor when the clutch remains open a predetermined length of time, said devices comprising a spring-held lever adapted to be retracted by the driving member of the clutch, and means for regulating the return movement of said lever; and means for keeping the latter retracted by the driven member 0 the clutch.

ring-held lever adapted to be re- 62. The combination of the machine proper, a motor for-driving the same, a

means for starting and stopping the motor, and timing devices for operating said means said prising a spring-held lever adapted to be retracted by the motor and telescoped cylinders ported and valved for fluid intake and restricted exhaust, one of comprising driving said cylinders being connected to said lever..

' 63. The combination of the machine lever adapted to be retracted byt e driving member of the clutch, and telescoped cylinders ported and valved forfluid intake and restricted exhaust, one of said cylinders being connected to said lever.

64. The combination f themachineproper, a motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, means for starting and stopping the motor, timing devices adapted to operate upon said means to stop the motor when the clutch remains open a. predetermined length of time, said-devices comprising a s ring-held lever adapted to be retracted by t e driving member of the clutch, and telescoped cylinders ported and valved for fluid intake and restricted exhaust, one 'of being connected to said lever; keeping the latter retracted member of the clutch.

65. The 1 combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, a swltchfor starting and stopping and means for by. the driven Y the motor, and timing devices adapted to operate upon said'switch to, stop the motor when the clutch remains 0 en a predetermined length of time, said evices comprising a spring-heldlever adapted to be retracted by the drivin member of the clutch, and telescoped cylin ers ported and valved for fluid intake and restricted exhaust, one of said cylinders being connected to said lever.

66. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, a swltch for starting and stopping the motor, timing devices adapted to operate upon said switch to stop the motor when the clutch remains open a predetermined length of time, said devices comprisin a spring-held lever adapted to be retracte bv the driving member of the clutch, and telescoped cylinders ported and valved for fluid to strap the motorwhen the clutch is open,

' evices com clutch between the motor and the said cylinders of time, saiddevices intake and restricted exhaust, one of said cylinders being connected to said lever and means for keeping the latter retracted by the driven member of 'the'clutch.

67 The combination of the machine proper, a motor for driving the same, a clutch between the motor and the machine,

-means for starting and stopping the motor, and timing devices for operating said means to stop the motor when the clutch is open, said devices comprising a spring-held lever, means for retracting the-same by the motor with pass-by provisions for permitting independent return movement of the lever, and vmeans for regulating such return movement.

68. The combination of the machine proper, a Vmotor for driving the same, a clutch between the'motor and the machine comprising driving and driven members,

means for starting and stopping the motor,

and timing devices adapted to operate upon said means to stop the motor when the clutch remains open a predetermined length of time, said lever, means for retracting the same by the driving member of the clutch with pass-by provisions; for permitting independent return movement of the lever, and means for regulating such return movement.

69. The combination of the machine proper, a motor for driving the same, a machine comprising driving and driven members, means for starting and stopping the motor, timing devices adapted to operate upon said means to stop clutch remains open a predetermined length comprising a springheld lever, means'for retracting the same by the driving member of the clutch with pass-by provisions for permitting independent return movement of the lever, and means for regulating such return movement; and means for keeping. the latter retracted by the ,driven member of the clutch.

devices comprising a spring-held.

the motor when the 70. The combination of the machineproper, an electric motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, a switch for starting and stopping the motor, and timing devices adapted to operate upon said switch to stop the motor when the clutch remains open a predetermined length of-time, said devices comprising a spring-held lever, means for retracting the same by the driving member of the clutch with pass-by provisions for permitting independent return movement of the lever, and means forregulating such return movement.

71. The combination of the machine proper, an electric motor for driving the same, a clutch between the motor and the machine comprising driving and driven members, a switch for starting and stopping comprising driving and the motor, timing devices adapted to 0 erate upon said switch to stop the motor 31811 the clutch remains open a predetermined length of time, said devices comprising a spring-held lever, means for retractin the same by the driving member of the clutch with pass-by provisions for permitting independent return movement of the lever, and means for re lating such return movement; and means or keeping the latter retracted by the driven member of the clutch.

72, The combination of the machine proper', a motor for driving the same, a clutch between the motor and the machine driven members, means for starting'and stopping the motor, and timing devices adapte to operate upon said means to stop the motor when the clutch remains open a predetermined length of time, said devices comprising a cam on the driving member of the clutch, a sprin -held lever adapted to be retracted by sai cam and carrying a flip pawl, a second lever adapted to be operated by said flip pawl a spring-held lever adapted to be retracted by said second lever, and'means for regulating the return movement of said last-mentioned spring-held lever.

'13. The combination of the machine proper, a motor for driving the same, a clut h between the motor and the machine com rising driving and driven members, means for starting and sto ping the motor, and timing devices adapte to operate upon sald means to stop the motor when the clutch remains open a predetermined length of time, said devices comprising a cam on the driving member of the clutch, a spring-held lever adapted to be retracted by sai cam and carrying a flip adapted to be operate spring-held. lever adapted to be retracted by said second lever, means for regulating the return movement of said last-mentioned spring-held lever, and a latch for holding the first spring-held adapted to be displaced by the other springheld lever in return movement thereo CLARENCE B. FOSTER. Witnesses:

R. S. MIELERT, v ARTHUR W. FBENZEL.

pawl, a second lever by said flip pawl, a,

lever displaced, said latch