US670075A - Returning device for calculating-machines. - Google Patents

Returning device for calculating-machines. Download PDF

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Publication number
US670075A
US670075A US437200A US1900004372A US670075A US 670075 A US670075 A US 670075A US 437200 A US437200 A US 437200A US 1900004372 A US1900004372 A US 1900004372A US 670075 A US670075 A US 670075A
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Prior art keywords
machines
calculating
returning device
wheels
register
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Expired - Lifetime
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US437200A
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Woldemar Heinitz
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    • 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
    • G06M1/303—Design features of general application for zeroising or setting to a particular value using heart-shaped or similar cams; using levers with drums

Definitions

  • the object of my invention is a returning device for the register or number wheels of calculati11g-machines of the duplex type, the returning to zero of the register-wheels being effected by a single lever motion.
  • the eccentric disks are actuated by cogs, causing the disks to turn until the part nearest to the turning axle is reached, the register-wheels in this position presenting the number O beneath the sight-slots.
  • Figure l is a front view of a part of such a machine.
  • Fig. 2 is a cut through same following the line A A, the register-wheels being returned to Zero.
  • Fig. 3 shows the same parts in another position, the cogs just begin ning to effect the returning of the registerwheels.
  • the register-wheels a and b of a duplex calculating-machine are actuated by the gearwheel c, Fig. 3, possessing teeth to be thrown in and out of gear.
  • An eccentric disk d is fixed to the register-wheel a, Fig. 2, said disk being shaped like a heart and ending in a protruding nose e, actuating the wellknown teens-gearing device.
  • the second registering device of a duplex machine consists of barrels h, being likewise actuated by aid of the gearing-wheel c.
  • Their axle bears an eccentric disk composed of two halves of a heart shaped disk, these two halves pointing to opposite directions.
  • By turning a lever m one end o1' the other of a fang n below the barrel may be brought into contact with the eccentric disk Z.
  • the peculiar shape of both the eccentric and the fang then causes a turning of the former until the lowest point near the axle is reached. This position corresponds with the appearing of the number 0 beneath the sightslot.
  • a returning device for calculating-machines the combination with the registen wheels and eccentric disks having the shape of two halves of a heart pointing in opposite directions, of a shaft bearing fangs adapted to glide on the circumference of said eccentrics, substantially as shown and described.

Description

No. .670,075. Patented Mar. 19, 19m.
- w. Hamlz.
BETURNING DEVICE FOH CALGULATING MACHINES.
- (Application med Feb. 7, 1900.) Y(llo Model.)
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UNITED STATES PATENT EEICE.
WOLDEMAR HEINITZ, OF DRESDEN, GERMANY.
RETURNING DEVICE FOR CALCULATBNGEMCHINES.
SPECIFICATION forming' part of Letters latent No. 670,075, dated March 19, 1901.
Application filed February 7, 1900. `Serial No. 4,372. (No inntlel.)
To al?, whom, t may concern:
Be it known` that I, WOLDEMAE HEINITZ, a citizen of the Kingdom of Saxony, and a resident of Dresden, Saxony, Germany, (whose post-office address is Dresden A, Bergmannstrasse No. '23,) have invented certain new and useful Improvements in Returning Devices for Calc-ulating-Machines, of which the following is a specification.
The object of my invention is a returning device for the register or number wheels of calculati11g-machines of the duplex type, the returning to zero of the register-wheels being effected by a single lever motion.
The eccentric disks are actuated by cogs, causing the disks to turn until the part nearest to the turning axle is reached, the register-wheels in this position presenting the number O beneath the sight-slots.
The accompanying drawings show my invention applied to a calculating-machine of the duplex type provided with two rows of register-wheels.
Figure l is a front view of a part of such a machine. Fig. 2 is a cut through same following the line A A, the register-wheels being returned to Zero. Fig. 3 shows the same parts in another position, the cogs just begin ning to effect the returning of the registerwheels.
The register-wheels a and b of a duplex calculating-machine are actuated by the gearwheel c, Fig. 3, possessing teeth to be thrown in and out of gear. An eccentric disk d is fixed to the register-wheel a, Fig. 2, said disk being shaped like a heart and ending in a protruding nose e, actuating the wellknown teens-gearing device.
ln front of the wheels CL pawls g, ending in noses 7L, are fastened to a shaftf, actuated by the hand-lever t'. On turning the shaft and bringing the pawls in contact with the eccentric disks CZ thelatter are compelled by the peculiarly-shaped noses h to turn around their axle until the nose has reached the point 75 on the circumference of the disk nearest to the axle, the circumference here being formed by two converging curves. The levert' and the pawls g are brought back int-o position by aid oi a spring.
The device described above has already been made use of in some of the older types of calculating-machines. A similar arrangement effecting the return of the second reg istering device of a duplex machine forms the subject of this invention.
The second registering device of a duplex machine consists of barrels h, being likewise actuated by aid of the gearing-wheel c. Their axle bears an eccentric disk composed of two halves of a heart shaped disk, these two halves pointing to opposite directions. By turning a lever m one end o1' the other of a fang n below the barrel may be brought into contact with the eccentric disk Z. The peculiar shape of both the eccentric and the fang then causes a turning of the former until the lowest point near the axle is reached. This position corresponds with the appearing of the number 0 beneath the sightslot.
Having thus described the nature of my invention, what l claim as new isl. ln a returning device forcalculatingmachines the combination with the registerwheels of eccentric disks having the shape of two halves of a heart pointing in opposite directions, substantially as shown and described.
2. In a returning device for calculating-machines the combination with the registen wheels and eccentric disks having the shape of two halves of a heart pointing in opposite directions, of a shaft bearing fangs adapted to glide on the circumference of said eccentrics, substantially as shown and described.
ln testimony whereof I affix my signature in presence of two witnesses.
l/VGLDEMAR HEINITZ.
Vitnesses:
WOLDEMAE HAUPT, HENRY HASPEE.
US437200A 1900-02-07 1900-02-07 Returning device for calculating-machines. Expired - Lifetime US670075A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604700A (en) * 1945-10-09 1952-07-29 Berthiez Charles William Amplifying indicator for the travel of movable machine parts
US2783945A (en) * 1957-03-05 smith
US2949229A (en) * 1960-08-16 gubelmann
US2969177A (en) * 1950-11-06 1961-01-24 Realty Ind Corp Partial product calculating machine
US3040981A (en) * 1956-12-19 1962-06-26 Paliz Holding Ag Stroke counter
US3248051A (en) * 1960-10-22 1966-04-26 Kienzle Apparate Gmbh Heart cam resetting devices

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783945A (en) * 1957-03-05 smith
US2949229A (en) * 1960-08-16 gubelmann
US2604700A (en) * 1945-10-09 1952-07-29 Berthiez Charles William Amplifying indicator for the travel of movable machine parts
US2969177A (en) * 1950-11-06 1961-01-24 Realty Ind Corp Partial product calculating machine
US3040981A (en) * 1956-12-19 1962-06-26 Paliz Holding Ag Stroke counter
US3248051A (en) * 1960-10-22 1966-04-26 Kienzle Apparate Gmbh Heart cam resetting devices

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