US2198708A - Calculating machine - Google Patents

Calculating machine Download PDF

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Publication number
US2198708A
US2198708A US166823A US16682337A US2198708A US 2198708 A US2198708 A US 2198708A US 166823 A US166823 A US 166823A US 16682337 A US16682337 A US 16682337A US 2198708 A US2198708 A US 2198708A
Authority
US
United States
Prior art keywords
crank
operating lever
shaft
arm
pivoted
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
US166823A
Other languages
English (en)
Inventor
Thomas Arthur
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.)
POWERS ACCOUNTING MACHINES Ltd
Original Assignee
POWERS ACCOUNTING MACHINES Ltd
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 POWERS ACCOUNTING MACHINES Ltd filed Critical POWERS ACCOUNTING MACHINES Ltd
Application granted granted Critical
Publication of US2198708A publication Critical patent/US2198708A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G3/00—Devices in which the computing operation is performed mechanically
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1956—Adjustable
    • Y10T74/19565—Relative movable axes
    • Y10T74/1957—Parallel shafts

Definitions

  • mechanism for controlling the engagement of accumulator wheels with their actuators in a calculating machine comprises a crank member adapted to be turned through half a revolution to move the accumulator wheels into or out of engagement and means for rotating said crank member with a gradual acceleration and deceleration whereby the wheels are brought into and away from their positions of rest at both ends of their travel, with a gradual movement whereby shocks are avoided.
  • FIG. 1 shows the mechanism according to the invention in side elevation
  • Figure 2 shows the mechanism in front elevation
  • Figure 3 shows the means for actuating the mechanism shown in Figs. 1 and 2 from the main shaft of the tabulator and'Fig. 4 is a section on the line IVIV in Fig. 2, but to a larger scale.
  • the accumulator wheels I are mounted on a shaft 2 carried between two arms 3 pivoted to the machine frame at 4 and extending below the toothed 5 sectors 5 with which the wheels I are to engage.
  • a frame Pivoted to the shaft 2 is a frame comprising,
  • a block I which has a downward extension 8 forked at 8a (Fig. 4).
  • a block 8b mounted in the fork 8a is a block 8b held in place by a retaining bracket 80 secured to the portion 8 by screws 8d and to the block 8? by a screw 8).
  • a crank pin 9 Passing freely through the block 8b is a crank pin 9 projecting from a cylindrical member 10 secured to a shaft ll mounted in bearings in plates l2.
  • the end of the operating lever l5 remote from the arm l3 on the crank shaft I l carries a pin l8 engaging in a cam slot l9 formed in a plate 20 fixed to the, machine frame, this cam slot being shaped to constrain the operating lever to execute a predetermined motion when displaced longitudinally.
  • the actuating plate 43 is rocked clockwise whereby the operating lever 15 is moved longitudinally towards the arm l3 on the crank shaft ll.
  • the cam'slot l9 causes it to swing about the pivot l6 whereby it is attached to the arm I! projecting from the rocking actuating plate 43.
  • cam slot I9 is so shaped as to cause the swinging movement of the operating lever I5 to accelerate gradually at the beginning of the movement and to decelerate gradually at the end of said movement, whereby the accumulator wheelsare brought into and out of engagement gently and without shock, and are also brought into and away from the fully disengaged position likewise gently.
  • the cam slot enables the mechanism according to the invention to start and stop in a dead centre position without difliculty or excessive friction.
  • the mechanism comprises a vertical link 41 having a head 48 formed with a slot engaging a pin 45 in the plate 43. At its lower end the link 47 is pivoted to a lever 5
  • a spring loaded detent lever 82 having two recesses 83, 84 (Fig. 1) for engagement with a pin 85 on the plate 43 serves to retain the latter in either of its two positions.
  • the invention includes accumulator control mechanism comprising a crank member adapted to be turned through 180 to move the wheels into and out of engagement with their actuators, and an arm for rotating said crank member, said arm, when the wheels are in or out of engagement, lying in a straight line with an operating lever pivoted thereto which is displaced longitudinally to effect rotation of the crank, said operating lever being constrained during its longitudinal movement to means for guiding said frame in a reciprocatory path, a shaft, a crank on said shaft, a connecting rod connecting said crank to said frame, whereby rotation of the crank through 180 and back again causes the frame to execute a complete reciprocation to and fro, a second crank on said shaft, an operating lever for rotating said second crank, pivoted thereto and lying in a straight line therewith when said second crank is in either of its positions of rest, means for moving the operating lever longitudinally and means for tilting said operating lever at the beginning of each movement to eliminate the dead centre position.
  • Mechanism according to claim 1 including a rocking member for moving the operating lever longitudinally, said lever being pivoted between its ends to the rocking member, a guide plate having a guide slot formed therein, and a pin in the lever at the end thereof remote from said second crank and engaging in said guide slot, said guide slot being shaped to cause the end of the lever which is pivoted to said second crank to swing in an approximately circular path.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission Devices (AREA)
US166823A 1936-10-10 1937-10-01 Calculating machine Expired - Lifetime US2198708A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27575/36A GB483235A (en) 1936-10-10 1936-10-10 Improvements in or relating to calculating machines

Publications (1)

Publication Number Publication Date
US2198708A true US2198708A (en) 1940-04-30

Family

ID=10261851

Family Applications (1)

Application Number Title Priority Date Filing Date
US166823A Expired - Lifetime US2198708A (en) 1936-10-10 1937-10-01 Calculating machine

Country Status (3)

Country Link
US (1) US2198708A (fr)
FR (1) FR827669A (fr)
GB (1) GB483235A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427049A (en) * 1941-10-27 1947-09-09 Addressograph Multigraph Printing and calculating machine
US2788939A (en) * 1952-02-01 1957-04-16 Wright K Gannett Exposure counter for cameras

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427049A (en) * 1941-10-27 1947-09-09 Addressograph Multigraph Printing and calculating machine
US2788939A (en) * 1952-02-01 1957-04-16 Wright K Gannett Exposure counter for cameras

Also Published As

Publication number Publication date
GB483235A (en) 1938-04-11
FR827669A (fr) 1938-05-02

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