US3610847A - Timing apparatus - Google Patents

Timing apparatus Download PDF

Info

Publication number
US3610847A
US3610847A US845207A US3610847DA US3610847A US 3610847 A US3610847 A US 3610847A US 845207 A US845207 A US 845207A US 3610847D A US3610847D A US 3610847DA US 3610847 A US3610847 A US 3610847A
Authority
US
United States
Prior art keywords
switch
assembly
rotary members
rotary
clutch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US845207A
Other languages
English (en)
Inventor
Grover K Houpt
Franklin W Kerfoot Jr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AUTOMATIC TIMING & CONTROLS COMPANY Inc
Automatic Timing and Controls Inc
Original Assignee
Automatic Timing and Controls Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Automatic Timing and Controls Inc filed Critical Automatic Timing and Controls Inc
Application granted granted Critical
Publication of US3610847A publication Critical patent/US3610847A/en
Assigned to AMERICAN MANUFACTURING COMPANY, INC. reassignment AMERICAN MANUFACTURING COMPANY, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: CONTORQUE CORPORATION
Assigned to AUTOMATIC TIMING & CONTROLS COMPANY, INC. reassignment AUTOMATIC TIMING & CONTROLS COMPANY, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMERICAN MANUFACTURING COMPANY, INC., A CORP. OF PA.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/06—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with electric driving mechanisms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/28—Design features of general application for zeroising or setting to a particular value
    • G06M1/283—Design features of general application for zeroising or setting to a particular value with drums
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/28—Design features of general application for zeroising or setting to a particular value
    • G06M1/30—Design features of general application for zeroising or setting to a particular value using heart-shaped or similar cams; using levers
    • G06M1/32—Actuating means, e.g. magnet, spring, weight
    • G06M1/323—Actuating means, e.g. magnet, spring, weight with drums
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M3/00—Counters with additional facilities
    • G06M3/02—Counters with additional facilities for performing an operation at a predetermined value of the count, e.g. arresting a machine
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M3/00—Counters with additional facilities
    • G06M3/02—Counters with additional facilities for performing an operation at a predetermined value of the count, e.g. arresting a machine
    • G06M3/021—Counters with additional facilities for performing an operation at a predetermined value of the count, e.g. arresting a machine with drums type indicating means
    • G06M3/022—Counters with additional facilities for performing an operation at a predetermined value of the count, e.g. arresting a machine with drums type indicating means by subtracting

Definitions

  • a solenoid moves an assembly which actuates a load switch and also includes clutch means for transmitting rotary power from an appropriate source to the digit wheels and also includes means for enabling carries" to be effected between adjacent digit wheels.
  • the setting of any digit wheel may be changed by pressing an override button and simultaneously pressing appropriate ones of the setting buttons, this all being done while the originally actuated load switch remains unaffected.
  • the original movement of the assembly causes a plurality of cam-following rollers to be moved into contact with respective cam surfaces on the wheels. Only when the rollers simultaneously engage corresponding recesses in the cam surface does their resultant movement unlatch the arm of a second switch which turns the power source off whereupon the timer reverts to its reset state.
  • This invention comprises a digital timer having at least one switch which reverts to its condition just prior to the beginning of the timing cycle only when the digit wheels have simultaneously reverted to their reset position. It is characterized by including means during a timing cycle which permits resetting of the timing interval by manipulation of the digit wheels without thereby changing the condition of at least one switch which was actuated at the beginning of the particular timing cycle.
  • FIG. 1 is an isometric view of the external appearance of the apparatus according to the present invention.
  • FIG. 2 is an isometric, partially exploded view of part of the apparatus shown in FIG. 1.
  • FIG. 3 is a rear view of the apparatus pictured in FIG. 1.
  • FIG. 4 is a right side, partially sectional, elevation of the apparatus shown in FIG. 1 when it is in a timing or counting cycle.
  • FIG. 5 is a partially sectional and broken away right side elevation view of the apparatusshown in FIG. 1 showing the mechanism in a nontiming or noncounting condition.
  • FIG. 6 is a left side elevation, partly broken away and partially sectional of the apparatus shown in FIG. 1 and shown in a timing or counting condition.
  • FIG. 7 is a partial left elevation and partially sectional view similar to FIG. 6 but showing the mechanism in a nontiming position.
  • FIG. 8 is a plan view, partially sectional, of the apparatus shown in FIG. 1.
  • FIG. 9 is a sectional view taken along the section line 9-9 in FIG. 7.
  • FIG. 10 is a sectional view taken along the line 10-10 of FIG. 9.
  • FIG. 11 is a fragmentary view, partly in section of a portion of the apparatus shown in FIG. 9.
  • FIG. 12 is a partly sectional view taken along the line 12-12 in FIG. 11.
  • FIG. 13 is a sectional view of one digit wheel assembly taken along the line 13-13 in FIG. 12.
  • FIG. I4 is an exploded isometric view of one digit wheel assembly of the apparatus shown in FIG. 12.
  • FIG. I5 is a sectional view taken along the line 15-15 in FIG. 9 and showing the apparatus in a nontiming condition.
  • FIG. 16 is a sectional view taken along the line 16-16 in FIG. 9.
  • FIG. I, 2 and 3 in particular there is shown indicated generally at the numeral 20 a subtracting timer or counter constructed in accordance with the present invention.
  • buttons 32 there is also an override pushbutton 34 protruding through an opening in the face plate 22 which, if pressed inward when the timer 20 is in a timing or counting position will prevent further counting or timing.
  • this button 34 is so depressed, it is then possible to press any of the reset buttons 32 to change the setting of the digit wheels 30.
  • the plastic cylindrical housing 24 has mounted on its rear a number of terminals 41, each tenninal being connected by conductive connections inwardly of the housing 40 to appropriate sockets that are engaged by male plugs 44 (FIG. 4).
  • the male plugs 44 are mounted upon a plastic mounting block 46 which is itself mounted by studs 47 (FIG. 4) to the front plate 24.
  • a motor 50 (FIG. 4) which may either be of the synchronous, continuous type or a pulsed type is mounted to the rear of block 46. Its shaft is connected to a driving gear 5I that meshes with a pinion 52 mounted at one end of a long shaft 53. On the other end of the shaft 53 there is a pinion 55 which, as shown in FIGS. 9 and 12, drives by means of teeth 59a of intermediate gear 59 that is mounted upon shaft 63. Rotation of the intermediate gear 59 will not, however, cause rotation of the least significant one (lowest in FIG. 12) of the digit wheels 30 unless there is a meshing of gear 59 with the laterally movable pinion 64.
  • Pinion 64 and a plurality of mutilated pinions 65 are mounted on a movable shaft 67 which (during the timing or counter cycle) is impelled forward toward and into engagement with the digit wheels by linkage associated with solenoid 69 as will be explained later.
  • the forward and rearward movement of the shaft 67 is limited by the slots 79a and 78a (FIGS. 4, 7, 12) in which shaft ends 670 and 67b ride.
  • Nontiming or Noncounting Condition Normally, the apparatus 20 is in a nontiming position. The mechanism is shown in this position in FIGS. 5, 7, 8, 9, 10, ll, 12, l3, 15.
  • Assembly 75 rotates about a shaft 77 having its ends journaled in brackets 79 and 78 that are attached to the front face plate 22.
  • the assembly 75 includes a plurality of finger arms 81, which are mounted on the shaft 77 and which engage notches in cardioid cam members 83 in the nontiming position (FIG. 10). When so engaged, the timing wheels 30 may be reset by pressing in appropriate ones of the pushbuttons 32.
  • the assembly 75 also is mounted for conjoint action with the mutilated pinions 65 and the clutch or drive gear 64. These pinions and gears, which are mounted on shaft 67 (that is itself mounted in assembly 75), move laterally forward or backward as explained elsewhere in the respective timing and nontiming
  • the timer 20 has a removable face plate 22 which is mounted 75 positions.
  • Each ,pushbutton 32 has an interior shaft portion 32a whose innermost end passes through a hole in a bracket 84 and the pushbutton 32 is normally maintained in its most outward position by virtue of a spring 85 around the shaft 32a.
  • a generally U-shaped member 87 mounted in a recessed portion 32b of the pushbutton by means of a pivot pin 88.
  • a spring 86 is associated with each member 88 and normally urges it in a generally clockwise position as viewed in FIG. about its pivot pin 88.
  • the faceplate 22 has an inwardly projecting shelf 220 that limits the clockwise movements of the member 87 when the pushbutton 32 is not depressed so that the upper end of member 87 cannot then engage any of the horizontal side teeth 30a of the digit wheels 30.
  • the digit wheels 30 may have their setting changed.
  • the member 87 swings upward under the influence of spring 88 and engages the space between two of the side teeth 30a and at the end of the inward stroke of the pushbutton moves the digit wheel 30 down (clockwise, FIG. 10) by one digit position. It is necessary to depress the pushbutton 32 a number of times if the change from the previous setting is more than one digit.
  • the digit wheel 30 is part of an entire assembly which is constructed to enable the digit wheel to be moved relative to other parts thereof such as the cardioid cam 83.
  • the construction of the assembly is shown in exploded view in FIG. 14 and consists of digit wheel 30 having formed integrally therewith a tubular shaft-engaging portion 30b. On one side it has setting teeth 30a; on the other it has two carry teeth 30h.
  • the portion 33 has angled surfaces 30d and oppositely angled surfaces 30c which are engaged by correspondingly angled surfaces of two plastic toothlike members 31a. These members are urged outwardly because of the outward bias of the spring member 30f whose ends engage the inner grooves of the members 31a.
  • the members 31a are disposed within spaces provided between portions 82a which are formed integral with the disc 82 on which is located the heartshaped cam 83.
  • the cardioid cam 83 is formed integrally on a disclike member 82 having a hollow axial tubular portion 820 that is designed to fit around the shaft portion 30b and snaps over the end 303 of the shaft.
  • Timeout Rollers 92 and Their Associated Assembly It will be seen that the indentations 30; are respectively engaged by corresponding rollers 92 that are mounted on a shaft 93 that is journaled between opposed outer bracket members 94, there also being a cross member 95 joining both members 94.
  • the members 94 themselves are pivotally mounted on a horizontal shaft 96 that is journaled between bracket members 97 which are attached to faceplate 22.
  • a projecting timeout release arm 98 having a hooked end portion 98a.
  • the arm 98 is normally urged clockwise (FIG. 15) with respect to the member by means of a biasing spring 99.
  • the rollers 92 and the member 98 are maintained in the position shown in FIGS. 10 and 16 by means of the pressure of cam 99 against larger cam-following roller 101 mounted coaxial with the digit wheel engaging rollers 92 and at the left end of the shaft 93.
  • the cam 99 exerts a slight upward pressure against the opposite bias exerted by springs 100. In this position, the rollers 92 are held clear of the circular surface 30k (FIG.
  • the linkage assembly between the solenoid 69 and the finger arms and clutch and mutilated pinions is in the position shown in FIGS. 7.
  • the pin 105 also extends inwardly past member 72 and, when the solenoid is actuated, moves downward to cause switch arm 107 to pivot about pivot 118.
  • the button 106a of switch 106 is not depressed by the arm 107.
  • the switch 106 may be a double switch having two push buttons if desired.
  • the switch 106 is mounted to the bracket 41 by means of a retaining plate 108 that is screwed thereto.
  • the timer 20 may commence operation by energization of the solenoid 69 and the motor 50 by operation of any external switch (not shown).
  • the solenoid 69 pulls down the armature '11 which causes the linkage members 72, 73, 74, 75 to move generally clockwise against the natural bias of the springs 104a,b. This action will cause the finger arms 81 to be moved out of the notches 83a in the cardioid members 83.
  • Rotation of the mutilated pinion causes the adjacent digit wheel 30 to move one-tenth of its angular rotation thereby decreasing with digit visible through the faceplate by one.
  • the pinions 65 are maintained in their proper rotary position by resilient members 66 that are screwed to member 75.
  • Switch 106 is mounted on bracket 41 by means of retaining plate 108. If desired, there may be other switches mounted in parallel with switch 106.
  • Pushbutton 34 is pivotally connected at its inner end to a member 35 having at its free end a bifurcated portion consisting of two elongated portions 35a and 35b and a space 35c between them. Disposed in the space is a horizontal pin 36 which, as the pushbutton 34 is pressed in, will raise the member 35 on its inward travel until shoulder 35d abuts the shaft 67. This, in turn, will push the shaft 67 and the associated linkage members 73, 74, 75 as well as the finger arms 81 and cam 99, into the nontiming position.
  • linkage member 72 is not affected because its biasing spring 104a is much stronger than the biasing spring 104b associated with member 73, and the solenoid 69 exerts a strong pull on member 72.
  • the actuating arm 107 of switch 106 will be kept down by the pin 105 and hence the condition of switch 106 will not change. This means that there is no instantaneous disabling or other effect on the external load when buttons 34 and 32 are simultaneously actuated is to lengthen or shorten the balance of the then current timing cycle and subsequent cycles as well.
  • the button 34 is pressed in the finger arms 81 will engage the notches in the cardioid cams 83 whereupon pressure upon appropriate ones of the pushbuttons 32 will effect the setting of the digit wheels to the desired digit.
  • the finger arms 81 will reset the digit wheels to their starting positions.
  • the arms do this by moving counterclockwise (FIG. 4) until their terminal portions 81a touch the edges of the cardioid cams 83.
  • cams 83 and their associated discs 82 and digit wheels 30 will rotate until the projections 81!: meet shoulders 83b and drop into notches 83a.
  • the digits facing outward through window 26 will then be those from which the subtracting countdown was made during the previous timing cycle, or the ones to which they were set during the previous timing cycle by simultaneous inward pressure of buttons 34 and 32.
  • Apparatus comprising:
  • a plurality of reset means for automatically resetting said rotary members to the same selected position at the beginning of each cycle of operation of said apparatus, said reset means moving in unison with movement of said clutch means for respectively engaging said associated detent portions when said clutch means is not transmitting motion from said (b) means to said one rotary member,
  • means including switch actuating means coupled to said rotary members from the beginning of an operating cycle for detecting the occurrence of a predetermined coincident position of said rotary members and moving in response thereto, and
  • switch means coupled to said switch-actuating means and arranged to change condition upon the movement of said (f) means when said coincident position is detected.
  • said means for actuating said clutch means includes means for enabling said clutch means to be inactivated without inactivating said second switch means.
  • said means for enabling said clutch means to be inactivated without inactivating said second switch means includes linkage means coupled to said clutch means and having a yieldable link therein, said yieldable link being normally biased by a spring to a first position.
  • Timing apparatus comprising: a. a plurality of rotary members bearing digital indicia thereupon, said members being settable to respective predetermined rotary positions, b. a first assembly movable to first and second positions,
  • said assembly including 1. a plurality of rotary position setting means which engage respective ones of said rotary members for enabling setting thereof to any rotary position,
  • clutch means for transmitting rotary motion from a power source to at least one of said rotary members
  • a second assembly movable to at least first and second positions which includes 1. a plurality of detecting means that may respectively engage said rotary members,
  • latching means all of said components of said second assembly being mounted for movement in unison, said second assembly being moved into its first position when said first assembly is in its first position and said cam means has urged said cam-follower upwards whereupon said detecting means do not engage said rotary members, said second assembly being moved into its second position when said cam means permits said cam follower to move downward thereby enabling said detecting means to engage respective ones of said rotary members and said latching means is in position to latch the switch arm of said switch, said second assembly also being moved into its third position when said detecting means simultaneously engage respective predetermined ortions of said rotary members whereupon said atchlng means moves to unlatch said switch arm.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Toys (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
US845207A 1969-07-28 1969-07-28 Timing apparatus Expired - Lifetime US3610847A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84520769A 1969-07-28 1969-07-28

Publications (1)

Publication Number Publication Date
US3610847A true US3610847A (en) 1971-10-05

Family

ID=25294650

Family Applications (1)

Application Number Title Priority Date Filing Date
US845207A Expired - Lifetime US3610847A (en) 1969-07-28 1969-07-28 Timing apparatus

Country Status (7)

Country Link
US (1) US3610847A (de)
JP (1) JPS5032790B1 (de)
AT (1) AT313613B (de)
CH (2) CH524851A (de)
DE (1) DE2005572C3 (de)
FR (1) FR2054651B1 (de)
GB (1) GB1302591A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814309A (en) * 1971-12-23 1974-06-04 American Mfg Co Inc Digital timer with resetting mechanism
US3862385A (en) * 1973-10-04 1975-01-21 Veeder Industries Inc Predetermining timer device
US3866003A (en) * 1973-10-04 1975-02-11 Veeder Industries Inc Timer switch assembly controlling continuous and intermittent operations of an oven
US3889091A (en) * 1973-02-10 1975-06-10 Tokyo Shibaura Electric Co Electronic oven with a cooking time setting mechanism and a remaining time indication mechanism
US4328885A (en) * 1979-12-05 1982-05-11 Andco Actuator Products, Inc. Actuator activated switching mechanism
US20090046540A1 (en) * 2007-08-16 2009-02-19 Norm Pacific Automation Corp. Automatic timing control device case

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924514A1 (de) * 1979-06-18 1981-02-05 Siemens Ag Vorrichtung zur betaetigung eines schalters in abhaengigkeit von dem drehwinkel einer welle
JPS58173621U (ja) * 1982-05-12 1983-11-19 株式会社吉野工業所 スクリユ−コンベア搬送装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799740A (en) * 1955-09-08 1957-07-16 Veeder Root Inc Counter
US3061191A (en) * 1958-03-03 1962-10-30 Amerline Corp Manually presettable counting means
US3257535A (en) * 1959-09-04 1966-06-21 Infranor Sa Commutator comprising radially positioned camming balls for actuating switch means
US3441210A (en) * 1967-03-08 1969-04-29 American Hospital Supply Corp Preset timer
US3453420A (en) * 1967-05-24 1969-07-01 Smith Corp A O Predetermining counter apparatus for flow control systems and the like
US3456123A (en) * 1965-03-08 1969-07-15 Miniature Elect Components Programmable digital time switching system
US3499127A (en) * 1968-12-26 1970-03-03 Cherry Electrical Prod Thumbwheel type switch

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763244C (de) * 1937-04-03 1953-01-26 Otto Berning & Co Zeitschaltwerk
FR1212087A (fr) * 1957-07-03 1960-03-22 Sodeco Compteur d'impulsions
DE1292898B (de) * 1966-07-30 1969-04-17 Hengstler Kg Zaehlerfabrik J Einstelleinrichtung an Vorgabezaehlwerken

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799740A (en) * 1955-09-08 1957-07-16 Veeder Root Inc Counter
US3061191A (en) * 1958-03-03 1962-10-30 Amerline Corp Manually presettable counting means
US3257535A (en) * 1959-09-04 1966-06-21 Infranor Sa Commutator comprising radially positioned camming balls for actuating switch means
US3456123A (en) * 1965-03-08 1969-07-15 Miniature Elect Components Programmable digital time switching system
US3441210A (en) * 1967-03-08 1969-04-29 American Hospital Supply Corp Preset timer
US3453420A (en) * 1967-05-24 1969-07-01 Smith Corp A O Predetermining counter apparatus for flow control systems and the like
US3499127A (en) * 1968-12-26 1970-03-03 Cherry Electrical Prod Thumbwheel type switch

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814309A (en) * 1971-12-23 1974-06-04 American Mfg Co Inc Digital timer with resetting mechanism
US3889091A (en) * 1973-02-10 1975-06-10 Tokyo Shibaura Electric Co Electronic oven with a cooking time setting mechanism and a remaining time indication mechanism
US3862385A (en) * 1973-10-04 1975-01-21 Veeder Industries Inc Predetermining timer device
US3866003A (en) * 1973-10-04 1975-02-11 Veeder Industries Inc Timer switch assembly controlling continuous and intermittent operations of an oven
US4328885A (en) * 1979-12-05 1982-05-11 Andco Actuator Products, Inc. Actuator activated switching mechanism
US20090046540A1 (en) * 2007-08-16 2009-02-19 Norm Pacific Automation Corp. Automatic timing control device case
US7671287B2 (en) * 2007-08-16 2010-03-02 Norm Pacific Automation Corp. Automatic timing control device case

Also Published As

Publication number Publication date
FR2054651B1 (de) 1974-05-17
DE2005572A1 (de) 1971-02-25
JPS5032790B1 (de) 1975-10-24
CH190470A4 (de) 1972-02-15
DE2005572C3 (de) 1976-01-08
GB1302591A (de) 1973-01-10
FR2054651A1 (de) 1971-04-23
CH524851A (de) 1972-02-15
DE2005572B2 (de) 1975-05-28
AT313613B (de) 1974-02-25

Similar Documents

Publication Publication Date Title
US2219636A (en) Automatic actuating mechanism
US3610847A (en) Timing apparatus
GB1265902A (de)
US3626452A (en) Multiposition bidirectional rotary means for a switch or the like
US3499127A (en) Thumbwheel type switch
US3373253A (en) Program switch
US2680166A (en) Multiple circuit control switch
GB1511823A (en) Appliance timer
US3064893A (en) Counter
US2260592A (en) Switch
US3866003A (en) Timer switch assembly controlling continuous and intermittent operations of an oven
US4244515A (en) Preset counter
US2217226A (en) Timer
US2973672A (en) Timer
US2652198A (en) Predetermined counter
US2140839A (en) Counter
US3231191A (en) Counter apparatus
US3152229A (en) Repeat mechanism for a clock controlled switch
US2502517A (en) Telephone call transmitter with digit indicating mechanism
US3862385A (en) Predetermining timer device
US3367193A (en) Timing switch
US3264818A (en) Front set mechanism
US3814309A (en) Digital timer with resetting mechanism
US3250467A (en) Subtractive roller counter
US3227826A (en) Timer switch mechanism

Legal Events

Date Code Title Description
AS Assignment

Owner name: AMERICAN MANUFACTURING COMPANY, INC.,STATELESS

Free format text: CHANGE OF NAME;ASSIGNOR:CONTORQUE CORPORATION;REEL/FRAME:004837/0428

Effective date: 19840606

Owner name: AMERICAN MANUFACTURING COMPANY, INC.,

Free format text: CHANGE OF NAME;ASSIGNOR:CONTORQUE CORPORATION;REEL/FRAME:004837/0428

Effective date: 19840606

AS Assignment

Owner name: AUTOMATIC TIMING & CONTROLS COMPANY, INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN MANUFACTURING COMPANY, INC., A CORP. OF PA.;REEL/FRAME:004874/0957

Effective date: 19880308