US1418461A - Gearing - Google Patents

Gearing Download PDF

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Publication number
US1418461A
US1418461A US510853A US51085321A US1418461A US 1418461 A US1418461 A US 1418461A US 510853 A US510853 A US 510853A US 51085321 A US51085321 A US 51085321A US 1418461 A US1418461 A US 1418461A
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United States
Prior art keywords
segment
gear
segments
gearing
compensating
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Expired - Lifetime
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US510853A
Inventor
Jr Winslow S Pierce
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Individual
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Priority to US510853A priority Critical patent/US1418461A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F16H55/18—Special devices for taking up backlash
    • 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
    • Y10T74/1987—Rotary bodies
    • Y10T74/19893—Sectional
    • Y10T74/19898—Backlash take-up

Definitions

  • My invention relates to a spurgear which is so made that it can be adjusted to compensate for wear.
  • VA gear is provided which may be adjusted to compensate for backlash in a manner explained below.
  • This gear is made in two parts or segments, one of which may be called the working segment, and the other the compensating segment.
  • FIG. 1 and 2 show the two segments fastened together, the compensating segment being displaced circumferentially, from the working segment;
  • Fig. 3 is a section view showing the positive means by which the segments are displaced relative to each other;
  • Fig. 1- shows the surface of the working segment which contacts with the compensating segment
  • F ig. 5 shows the surface of the compensating segment which contacts with the working segment
  • Fig. 6 shows the construction of the machine screw by means of which the segments are displaced relative to each other.
  • numeral 1 represents the working segment of the gear.
  • This segment transmits all of the power and
  • the compensating segment 2 is made with teeth of the same size and shape as those on the other segment, but
  • FIGs. 4L and 5 holes-3 are provided through which machine screws 5 may be screwed into tapped holes l to secure the two parts of the gear togetheras'in Fig. 1.
  • the holes 3 are oblongto permit securing the segments together in a number of relative positions.
  • a nar row slot 6' is shown, into which the eccentric lug 7 of the machine screw 8 projects.
  • the keyway 9 is made wider than the keyway 10.
  • Segment 1 is keyed tightly to the shaft 11, and segment 2 is free to rotate on that shaft through a limited angle when the screws 5 are loosened.
  • the compensating segment maybe mounted on a collar which is integral with the working segment. N0 keyway would then be required in the former segment.
  • a spur gear consisting of two annular segments, one segment having means provided thereon whereby it may be fixed to a shaft, the other segment being free to rotate through a limited angle on said shaft, positive means for rotating the latter segment with respect to the former consisting of a machine screw extending through the former segment, said screw having an eccentric lug coacting with a slot in said latter segment, and means for fixing the twosegments together at any predetermined relative positlon.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
  • Measuring Volume Flow (AREA)
  • Retarders (AREA)

Description

w. s. PIERCE, Jn.
GEARING. I APPLICATION'FILED oc r. 21, I921- INVENTOR l l u xs/nv 6' R vas}- ATTORNEY TES WINSLOW s. PIERCE, JR., or BAYVILLE, NEW YORK.
' GEARING.
Application filed October 27, 1921.
To all whom it may concern: 7
Be it known that I, Winslow S. PIERCE, Jr., residing at Bayville, in the county of Nassau, State of New York,'have invented certain new and useful Improvements in Gearing; and I do hereby declarethe following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.
My invention relates to a spurgear which is so made that it can be adjusted to compensate for wear.
It is a well known fact that ordinary spur gears do not operate very satisfactorily after they become worn. The worn teeth do not mesh properly and as a result the action is noisy and there is considerable play between the geared members.
In the present invention this undesirable feature of gear operation is eliminated. VA gear is provided which may be adjusted to compensate for backlash in a manner explained below. This gear is made in two parts or segments, one of which may be called the working segment, and the other the compensating segment.
Referring to the drawing-- Figs. 1 and 2 show the two segments fastened together, the compensating segment being displaced circumferentially, from the working segment;
Fig. 3 is a section view showing the positive means by which the segments are displaced relative to each other;
Fig. 1- shows the surface of the working segment which contacts with the compensating segment;
F ig. 5 shows the surface of the compensating segment which contacts with the working segment; and
Fig. 6 shows the construction of the machine screw by means of which the segments are displaced relative to each other.
Referring to Figs. 1 and 2, numeral 1 represents the working segment of the gear.
This segment transmits all of the power and,
is designed accordingly. The compensating segment 2 is made with teeth of the same size and shape as those on the other segment, but
Specification of Letters Patent.
Patented June 6, 1922. Serial No. 510,853.
since the formersegment 2 is notintended to transmit any power, its face may be made narrower than theface of the working segment 1. ReferringtoFigs. 4L and 5, holes-3 are provided through which machine screws 5 may be screwed into tapped holes l to secure the two parts of the gear togetheras'in Fig. 1. The holes 3 are oblongto permit securing the segments together in a number of relative positions. In Figs. 3 and 5,.a nar row slot 6' is shown, into which the eccentric lug 7 of the machine screw 8 projects.
When the gear is first assembled the teeth of the segment 2 are even with the teeth of the segment 1. After the gear teeth have become worn and it is desired to compensate for backlash, the screws 5 are loosened, and the screw 8 turned. The turning of this screw 8 displaces segment 2 circumferentially with respect to segment 1, by means of the eccentric lug 7 moving in slot 6. When this displacement is equal to the backlash, the screws 5 are tightened.
In order to permit this relative displacement of the two segments, the keyway 9 is made wider than the keyway 10. Segment 1 is keyed tightly to the shaft 11, and segment 2 is free to rotate on that shaft through a limited angle when the screws 5 are loosened.
Asa modification of the present invention, the compensating segment maybe mounted on a collar which is integral with the working segment. N0 keyway would then be required in the former segment.
I claim:
A spur gear consisting of two annular segments, one segment having means provided thereon whereby it may be fixed to a shaft, the other segment being free to rotate through a limited angle on said shaft, positive means for rotating the latter segment with respect to the former consisting of a machine screw extending through the former segment, said screw having an eccentric lug coacting with a slot in said latter segment, and means for fixing the twosegments together at any predetermined relative positlon.
In testimony whereof I afiix my signature. I
WINSLOW S. PIERCE, JR.
US510853A 1921-10-27 1921-10-27 Gearing Expired - Lifetime US1418461A (en)

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US510853A US1418461A (en) 1921-10-27 1921-10-27 Gearing

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176528A (en) * 1962-04-18 1965-04-06 Ferguson Res Ltd Harry Dual drives using endless flexible inextensible drive-transmitting members
DE1256962B (en) * 1964-11-18 1967-12-21 Esterer Ag Maschf Telescopic shaft
US4516867A (en) * 1982-09-22 1985-05-14 Schacht Roy A Printing wheel connecting and adjusting means
US5181433A (en) * 1990-09-20 1993-01-26 Chiba Dies Co., Ltd. Gear
US11320035B2 (en) * 2017-11-09 2022-05-03 Man Truck & Bus Ag Gear wheel, in particular idler gear, for a gear train
US11703116B2 (en) * 2020-01-08 2023-07-18 Muncie Power Products, Inc. Dampened gear system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176528A (en) * 1962-04-18 1965-04-06 Ferguson Res Ltd Harry Dual drives using endless flexible inextensible drive-transmitting members
DE1256962B (en) * 1964-11-18 1967-12-21 Esterer Ag Maschf Telescopic shaft
US4516867A (en) * 1982-09-22 1985-05-14 Schacht Roy A Printing wheel connecting and adjusting means
US5181433A (en) * 1990-09-20 1993-01-26 Chiba Dies Co., Ltd. Gear
US11320035B2 (en) * 2017-11-09 2022-05-03 Man Truck & Bus Ag Gear wheel, in particular idler gear, for a gear train
US11703116B2 (en) * 2020-01-08 2023-07-18 Muncie Power Products, Inc. Dampened gear system

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